/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-patterns/array18_pattern.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-d966a43 [2022-01-31 10:10:52,755 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-31 10:10:52,756 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-31 10:10:52,786 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-31 10:10:52,786 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-31 10:10:52,786 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-31 10:10:52,787 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-31 10:10:52,800 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-31 10:10:52,802 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-31 10:10:52,802 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-31 10:10:52,803 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-31 10:10:52,804 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-31 10:10:52,804 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-31 10:10:52,804 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-31 10:10:52,805 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-31 10:10:52,806 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-31 10:10:52,806 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-31 10:10:52,807 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-31 10:10:52,808 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-31 10:10:52,809 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-31 10:10:52,810 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-31 10:10:52,811 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-31 10:10:52,812 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-31 10:10:52,813 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-31 10:10:52,814 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-01-31 10:10:52,819 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-31 10:10:52,820 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-31 10:10:52,820 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-31 10:10:52,824 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/LoopAccelerationJordanC.epf [2022-01-31 10:10:52,829 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-31 10:10:52,829 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-31 10:10:52,830 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-31 10:10:52,830 INFO L138 SettingsManager]: * sizeof long=4 [2022-01-31 10:10:52,830 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-31 10:10:52,830 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-01-31 10:10:52,830 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-31 10:10:52,831 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-31 10:10:52,831 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-31 10:10:52,831 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-31 10:10:52,831 INFO L138 SettingsManager]: * sizeof long double=12 [2022-01-31 10:10:52,831 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-31 10:10:52,831 INFO L138 SettingsManager]: * Use constant arrays=true [2022-01-31 10:10:52,831 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-31 10:10:52,831 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-31 10:10:52,831 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-31 10:10:52,831 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-01-31 10:10:52,832 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-31 10:10:52,832 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-31 10:10:52,832 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-31 10:10:52,832 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-31 10:10:52,832 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-01-31 10:10:52,832 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-31 10:10:52,983 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-31 10:10:53,006 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-31 10:10:53,008 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-31 10:10:53,009 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-31 10:10:53,009 INFO L275 PluginConnector]: CDTParser initialized [2022-01-31 10:10:53,010 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-patterns/array18_pattern.c [2022-01-31 10:10:53,055 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ea67e432b/2d6dcd0b5bd34999a2cc3cb2f3f756f2/FLAGc9c0a58d3 [2022-01-31 10:10:53,405 INFO L306 CDTParser]: Found 1 translation units. [2022-01-31 10:10:53,405 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-patterns/array18_pattern.c [2022-01-31 10:10:53,411 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ea67e432b/2d6dcd0b5bd34999a2cc3cb2f3f756f2/FLAGc9c0a58d3 [2022-01-31 10:10:53,419 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ea67e432b/2d6dcd0b5bd34999a2cc3cb2f3f756f2 [2022-01-31 10:10:53,421 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-31 10:10:53,422 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-01-31 10:10:53,423 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-31 10:10:53,423 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-31 10:10:53,425 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-31 10:10:53,426 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.01 10:10:53" (1/1) ... [2022-01-31 10:10:53,426 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@58e1883b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 10:10:53, skipping insertion in model container [2022-01-31 10:10:53,426 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.01 10:10:53" (1/1) ... [2022-01-31 10:10:53,430 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-31 10:10:53,443 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-31 10:10:53,543 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-patterns/array18_pattern.c[1444,1457] [2022-01-31 10:10:53,574 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-31 10:10:53,578 INFO L203 MainTranslator]: Completed pre-run [2022-01-31 10:10:53,587 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-patterns/array18_pattern.c[1444,1457] [2022-01-31 10:10:53,594 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-31 10:10:53,602 INFO L208 MainTranslator]: Completed translation [2022-01-31 10:10:53,602 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 10:10:53 WrapperNode [2022-01-31 10:10:53,602 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-31 10:10:53,603 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-31 10:10:53,603 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-31 10:10:53,603 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-31 10:10:53,610 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 10:10:53" (1/1) ... [2022-01-31 10:10:53,610 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 10:10:53" (1/1) ... [2022-01-31 10:10:53,616 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 10:10:53" (1/1) ... [2022-01-31 10:10:53,616 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 10:10:53" (1/1) ... [2022-01-31 10:10:53,626 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 10:10:53" (1/1) ... [2022-01-31 10:10:53,628 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 10:10:53" (1/1) ... [2022-01-31 10:10:53,629 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 10:10:53" (1/1) ... [2022-01-31 10:10:53,630 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-31 10:10:53,631 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-31 10:10:53,631 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-31 10:10:53,631 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-31 10:10:53,634 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 10:10:53" (1/1) ... [2022-01-31 10:10:53,639 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-31 10:10:53,646 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-31 10:10:53,654 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 10:10:53,659 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 10:10:53,677 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2022-01-31 10:10:53,677 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-31 10:10:53,677 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2022-01-31 10:10:53,677 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-01-31 10:10:53,677 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-01-31 10:10:53,678 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2022-01-31 10:10:53,678 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2022-01-31 10:10:53,678 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2022-01-31 10:10:53,678 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2022-01-31 10:10:53,678 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-31 10:10:53,678 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-01-31 10:10:53,678 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-01-31 10:10:53,678 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2022-01-31 10:10:53,679 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_short [2022-01-31 10:10:53,679 INFO L130 BoogieDeclarations]: Found specification of procedure main [2022-01-31 10:10:53,679 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-01-31 10:10:53,679 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-01-31 10:10:53,679 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-01-31 10:10:53,679 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-01-31 10:10:53,679 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2022-01-31 10:10:53,679 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-01-31 10:10:53,680 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-31 10:10:53,724 INFO L234 CfgBuilder]: Building ICFG [2022-01-31 10:10:53,725 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-31 10:10:53,887 INFO L275 CfgBuilder]: Performing block encoding [2022-01-31 10:10:53,891 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-31 10:10:53,891 INFO L299 CfgBuilder]: Removed 5 assume(true) statements. [2022-01-31 10:10:53,893 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.01 10:10:53 BoogieIcfgContainer [2022-01-31 10:10:53,893 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-31 10:10:53,893 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-01-31 10:10:53,893 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-01-31 10:10:53,894 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-01-31 10:10:53,897 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.01 10:10:53" (1/1) ... [2022-01-31 10:10:53,925 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 31.01 10:10:53 BasicIcfg [2022-01-31 10:10:53,926 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-01-31 10:10:53,927 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-31 10:10:53,927 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-31 10:10:53,929 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-31 10:10:53,929 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.01 10:10:53" (1/4) ... [2022-01-31 10:10:53,929 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@60fe436b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.01 10:10:53, skipping insertion in model container [2022-01-31 10:10:53,929 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 10:10:53" (2/4) ... [2022-01-31 10:10:53,930 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@60fe436b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.01 10:10:53, skipping insertion in model container [2022-01-31 10:10:53,930 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.01 10:10:53" (3/4) ... [2022-01-31 10:10:53,930 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@60fe436b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 31.01 10:10:53, skipping insertion in model container [2022-01-31 10:10:53,930 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 31.01 10:10:53" (4/4) ... [2022-01-31 10:10:53,931 INFO L111 eAbstractionObserver]: Analyzing ICFG array18_pattern.cJordan [2022-01-31 10:10:53,934 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:ForwardPredicates Determinization: PREDICATE_ABSTRACTION [2022-01-31 10:10:53,934 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-31 10:10:53,983 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-31 10:10:53,990 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 10:10:53,990 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-01-31 10:10:54,001 INFO L276 IsEmpty]: Start isEmpty. Operand has 41 states, 29 states have (on average 1.5517241379310345) internal successors, (45), 30 states have internal predecessors, (45), 6 states have call successors, (6), 4 states have call predecessors, (6), 4 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-01-31 10:10:54,011 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-01-31 10:10:54,011 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 10:10:54,011 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] [2022-01-31 10:10:54,012 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 10:10:54,015 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 10:10:54,015 INFO L85 PathProgramCache]: Analyzing trace with hash 1563598307, now seen corresponding path program 1 times [2022-01-31 10:10:54,020 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-31 10:10:54,020 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1399968428] [2022-01-31 10:10:54,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 10:10:54,021 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 10:10:54,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 10:10:54,161 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 10:10:54,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 10:10:54,175 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-01-31 10:10:54,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 10:10:54,181 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 10:10:54,181 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-31 10:10:54,182 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1399968428] [2022-01-31 10:10:54,183 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1399968428] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 10:10:54,183 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 10:10:54,183 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-31 10:10:54,184 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1256553967] [2022-01-31 10:10:54,184 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 10:10:54,187 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-31 10:10:54,187 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-31 10:10:54,206 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-31 10:10:54,207 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-31 10:10:54,209 INFO L87 Difference]: Start difference. First operand has 41 states, 29 states have (on average 1.5517241379310345) internal successors, (45), 30 states have internal predecessors, (45), 6 states have call successors, (6), 4 states have call predecessors, (6), 4 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) Second operand has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 2 states have internal predecessors, (14), 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 10:10:54,287 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 10:10:54,287 INFO L93 Difference]: Finished difference Result 41 states and 49 transitions. [2022-01-31 10:10:54,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-31 10:10:54,289 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 2 states have internal predecessors, (14), 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 20 [2022-01-31 10:10:54,289 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 10:10:54,295 INFO L225 Difference]: With dead ends: 41 [2022-01-31 10:10:54,295 INFO L226 Difference]: Without dead ends: 34 [2022-01-31 10:10:54,296 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 10:10:54,300 INFO L933 BasicCegarLoop]: 49 mSDtfsCounter, 8 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 53 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 10:10:54,300 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8 Valid, 53 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 10:10:54,311 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2022-01-31 10:10:54,325 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 34. [2022-01-31 10:10:54,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 25 states have (on average 1.28) internal successors, (32), 25 states have internal predecessors, (32), 6 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 10:10:54,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 42 transitions. [2022-01-31 10:10:54,328 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 42 transitions. Word has length 20 [2022-01-31 10:10:54,328 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 10:10:54,328 INFO L470 AbstractCegarLoop]: Abstraction has 34 states and 42 transitions. [2022-01-31 10:10:54,329 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 2 states have internal predecessors, (14), 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 10:10:54,329 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 42 transitions. [2022-01-31 10:10:54,330 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2022-01-31 10:10:54,330 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 10:10:54,331 INFO L514 BasicCegarLoop]: trace histogram [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] [2022-01-31 10:10:54,331 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-31 10:10:54,331 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 10:10:54,331 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 10:10:54,331 INFO L85 PathProgramCache]: Analyzing trace with hash 1530716502, now seen corresponding path program 1 times [2022-01-31 10:10:54,332 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-31 10:10:54,332 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1695536866] [2022-01-31 10:10:54,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 10:10:54,332 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 10:10:54,370 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-01-31 10:10:54,370 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [736192355] [2022-01-31 10:10:54,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 10:10:54,370 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-31 10:10:54,371 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-31 10:10:54,373 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 10:10:54,374 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 10:10:54,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 10:10:54,438 INFO L263 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 5 conjunts are in the unsatisfiable core [2022-01-31 10:10:54,442 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-31 10:10:54,525 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-01-31 10:10:54,526 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-31 10:10:54,526 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-31 10:10:54,526 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1695536866] [2022-01-31 10:10:54,526 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-01-31 10:10:54,526 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [736192355] [2022-01-31 10:10:54,526 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [736192355] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 10:10:54,526 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 10:10:54,526 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-31 10:10:54,527 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [811207037] [2022-01-31 10:10:54,527 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 10:10:54,527 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-31 10:10:54,528 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-31 10:10:54,528 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-31 10:10:54,528 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-31 10:10:54,528 INFO L87 Difference]: Start difference. First operand 34 states and 42 transitions. Second operand has 5 states, 5 states have (on average 3.8) internal successors, (19), 4 states have internal predecessors, (19), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 10:10:54,543 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 10:10:54,543 INFO L93 Difference]: Finished difference Result 40 states and 49 transitions. [2022-01-31 10:10:54,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-31 10:10:54,544 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.8) internal successors, (19), 4 states have internal predecessors, (19), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 35 [2022-01-31 10:10:54,544 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 10:10:54,544 INFO L225 Difference]: With dead ends: 40 [2022-01-31 10:10:54,544 INFO L226 Difference]: Without dead ends: 37 [2022-01-31 10:10:54,545 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-01-31 10:10:54,545 INFO L933 BasicCegarLoop]: 40 mSDtfsCounter, 12 mSDsluCounter, 99 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 139 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-31 10:10:54,546 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [12 Valid, 139 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-31 10:10:54,546 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2022-01-31 10:10:54,549 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2022-01-31 10:10:54,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 28 states have (on average 1.2857142857142858) internal successors, (36), 28 states have internal predecessors, (36), 6 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 10:10:54,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 46 transitions. [2022-01-31 10:10:54,550 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 46 transitions. Word has length 35 [2022-01-31 10:10:54,550 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 10:10:54,550 INFO L470 AbstractCegarLoop]: Abstraction has 37 states and 46 transitions. [2022-01-31 10:10:54,551 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.8) internal successors, (19), 4 states have internal predecessors, (19), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 10:10:54,551 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 46 transitions. [2022-01-31 10:10:54,553 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2022-01-31 10:10:54,553 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 10:10:54,553 INFO L514 BasicCegarLoop]: trace histogram [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, 1] [2022-01-31 10:10:54,572 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 10:10:54,763 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-31 10:10:54,763 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 10:10:54,764 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 10:10:54,764 INFO L85 PathProgramCache]: Analyzing trace with hash 978510442, now seen corresponding path program 1 times [2022-01-31 10:10:54,764 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-31 10:10:54,764 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1264820365] [2022-01-31 10:10:54,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 10:10:54,764 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 10:10:54,777 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-01-31 10:10:54,777 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [620894230] [2022-01-31 10:10:54,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 10:10:54,777 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-31 10:10:54,777 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-31 10:10:54,795 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 10:10:54,798 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 10:10:54,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 10:10:54,847 INFO L263 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-31 10:10:54,849 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-31 10:10:54,943 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-01-31 10:10:54,943 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-31 10:10:54,943 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-31 10:10:54,943 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1264820365] [2022-01-31 10:10:54,944 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-01-31 10:10:54,944 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [620894230] [2022-01-31 10:10:54,944 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [620894230] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 10:10:54,944 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 10:10:54,944 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-31 10:10:54,944 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1178558093] [2022-01-31 10:10:54,944 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 10:10:54,945 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-31 10:10:54,945 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-31 10:10:54,945 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-31 10:10:54,945 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-01-31 10:10:54,945 INFO L87 Difference]: Start difference. First operand 37 states and 46 transitions. Second operand has 5 states, 5 states have (on average 5.4) internal successors, (27), 5 states have internal predecessors, (27), 3 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 10:10:55,001 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 10:10:55,001 INFO L93 Difference]: Finished difference Result 61 states and 77 transitions. [2022-01-31 10:10:55,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-31 10:10:55,002 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.4) internal successors, (27), 5 states have internal predecessors, (27), 3 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 40 [2022-01-31 10:10:55,003 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 10:10:55,004 INFO L225 Difference]: With dead ends: 61 [2022-01-31 10:10:55,005 INFO L226 Difference]: Without dead ends: 47 [2022-01-31 10:10:55,005 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-01-31 10:10:55,008 INFO L933 BasicCegarLoop]: 34 mSDtfsCounter, 25 mSDsluCounter, 66 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 100 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-31 10:10:55,009 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [25 Valid, 100 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-31 10:10:55,010 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2022-01-31 10:10:55,016 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 38. [2022-01-31 10:10:55,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38 states, 29 states have (on average 1.2758620689655173) internal successors, (37), 29 states have internal predecessors, (37), 6 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 10:10:55,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 47 transitions. [2022-01-31 10:10:55,019 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 47 transitions. Word has length 40 [2022-01-31 10:10:55,019 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 10:10:55,019 INFO L470 AbstractCegarLoop]: Abstraction has 38 states and 47 transitions. [2022-01-31 10:10:55,019 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.4) internal successors, (27), 5 states have internal predecessors, (27), 3 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 10:10:55,019 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 47 transitions. [2022-01-31 10:10:55,020 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2022-01-31 10:10:55,020 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 10:10:55,020 INFO L514 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1] [2022-01-31 10:10:55,038 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-01-31 10:10:55,229 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2022-01-31 10:10:55,229 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 10:10:55,230 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 10:10:55,230 INFO L85 PathProgramCache]: Analyzing trace with hash 2042070073, now seen corresponding path program 1 times [2022-01-31 10:10:55,230 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-31 10:10:55,230 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1894702922] [2022-01-31 10:10:55,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 10:10:55,230 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 10:10:55,253 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-01-31 10:10:55,253 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2133878875] [2022-01-31 10:10:55,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 10:10:55,253 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-31 10:10:55,254 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-31 10:10:55,260 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 10:10:55,262 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 10:10:55,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 10:10:55,323 INFO L263 TraceCheckSpWp]: Trace formula consists of 164 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-31 10:10:55,327 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-31 10:10:55,402 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-01-31 10:10:55,403 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-31 10:10:55,403 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-31 10:10:55,403 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1894702922] [2022-01-31 10:10:55,404 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-01-31 10:10:55,405 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2133878875] [2022-01-31 10:10:55,405 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2133878875] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 10:10:55,405 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 10:10:55,405 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-31 10:10:55,405 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1494716204] [2022-01-31 10:10:55,405 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 10:10:55,406 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-31 10:10:55,406 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-31 10:10:55,407 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-31 10:10:55,407 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-31 10:10:55,407 INFO L87 Difference]: Start difference. First operand 38 states and 47 transitions. Second operand has 4 states, 4 states have (on average 7.5) internal successors, (30), 4 states have internal predecessors, (30), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 10:10:55,463 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 10:10:55,463 INFO L93 Difference]: Finished difference Result 41 states and 49 transitions. [2022-01-31 10:10:55,463 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-31 10:10:55,463 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.5) internal successors, (30), 4 states have internal predecessors, (30), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 43 [2022-01-31 10:10:55,464 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 10:10:55,465 INFO L225 Difference]: With dead ends: 41 [2022-01-31 10:10:55,465 INFO L226 Difference]: Without dead ends: 41 [2022-01-31 10:10:55,465 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-31 10:10:55,467 INFO L933 BasicCegarLoop]: 32 mSDtfsCounter, 23 mSDsluCounter, 40 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 72 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-31 10:10:55,468 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [25 Valid, 72 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-31 10:10:55,469 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2022-01-31 10:10:55,475 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 38. [2022-01-31 10:10:55,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38 states, 29 states have (on average 1.2413793103448276) internal successors, (36), 29 states have internal predecessors, (36), 6 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 10:10:55,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 46 transitions. [2022-01-31 10:10:55,477 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 46 transitions. Word has length 43 [2022-01-31 10:10:55,477 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 10:10:55,477 INFO L470 AbstractCegarLoop]: Abstraction has 38 states and 46 transitions. [2022-01-31 10:10:55,477 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.5) internal successors, (30), 4 states have internal predecessors, (30), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 10:10:55,477 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 46 transitions. [2022-01-31 10:10:55,478 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2022-01-31 10:10:55,478 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 10:10:55,478 INFO L514 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1] [2022-01-31 10:10:55,494 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 10:10:55,687 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-31 10:10:55,687 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 10:10:55,688 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 10:10:55,688 INFO L85 PathProgramCache]: Analyzing trace with hash 1553445182, now seen corresponding path program 1 times [2022-01-31 10:10:55,688 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-31 10:10:55,688 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [353020558] [2022-01-31 10:10:55,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 10:10:55,688 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 10:10:55,704 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-01-31 10:10:55,705 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1642919244] [2022-01-31 10:10:55,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 10:10:55,705 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-31 10:10:55,705 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-31 10:10:55,707 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 10:10:55,709 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 10:10:55,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 10:10:55,814 INFO L263 TraceCheckSpWp]: Trace formula consists of 171 conjuncts, 33 conjunts are in the unsatisfiable core [2022-01-31 10:10:55,817 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-31 10:10:56,190 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 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 181 treesize of output 172 [2022-01-31 10:10:56,203 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 4 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 174 treesize of output 183 [2022-01-31 10:10:56,242 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 3 [2022-01-31 10:10:56,254 WARN L234 Elim1Store]: Array PQE input equivalent to false [2022-01-31 10:10:56,267 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 3 [2022-01-31 10:10:56,275 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 27 treesize of output 3 [2022-01-31 10:10:56,458 INFO L353 Elim1Store]: treesize reduction 23, result has 11.5 percent of original size [2022-01-31 10:10:56,458 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 54 treesize of output 27 [2022-01-31 10:10:56,503 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 11 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-31 10:10:56,504 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-31 10:10:56,737 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 178 treesize of output 170 [2022-01-31 10:10:56,748 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-31 10:10:56,748 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 4 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 170 treesize of output 183 [2022-01-31 10:10:56,771 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 28 treesize of output 4 [2022-01-31 10:10:56,797 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 28 treesize of output 4 [2022-01-31 10:10:56,838 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 26 treesize of output 4 [2022-01-31 10:10:56,868 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 26 treesize of output 4 [2022-01-31 10:10:56,905 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 4 [2022-01-31 10:10:56,938 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 4 [2022-01-31 10:10:56,981 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 26 treesize of output 4 [2022-01-31 10:10:57,011 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 26 treesize of output 4 [2022-01-31 10:10:57,119 INFO L353 Elim1Store]: treesize reduction 198, result has 50.6 percent of original size [2022-01-31 10:10:57,119 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 181 treesize of output 291 [2022-01-31 10:11:04,284 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse8 (mod (+ c_~ARR_SIZE~0 (* 4294967295 c_main_~index2~0) 4294967295) 4294967296)) (.cse10 (mod c_~ARR_SIZE~0 4294967296))) (let ((.cse0 (<= .cse10 2147483647)) (.cse1 (* c_main_~index2~0 4)) (.cse2 (* (* .cse8 .cse10) 4))) (let ((.cse4 (* 17179869184 .cse8)) (.cse7 (+ .cse1 .cse2)) (.cse3 (* 17179869184 .cse10)) (.cse6 (not .cse0)) (.cse5 (<= .cse8 2147483647))) (and (or .cse0 (= (+ 73786976294838206464 .cse1 .cse2) (+ .cse3 .cse4)) .cse5) (or (not .cse5) .cse6 (= .cse7 0)) (or .cse0 (< 2147483647 .cse8) (= .cse7 .cse4)) (or (= .cse7 .cse3) .cse6 .cse5) (let ((.cse9 (+ (* c_main_~num~0 (* c_main_~num~0 (* c_main_~num~0 c_main_~num~0))) c_main_~sum~0))) (or (= .cse9 1) (= .cse9 0))))))) is different from false [2022-01-31 10:11:11,615 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-31 10:11:11,615 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [353020558] [2022-01-31 10:11:11,615 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-01-31 10:11:11,615 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1642919244] [2022-01-31 10:11:11,615 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1642919244] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-31 10:11:11,615 INFO L186 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-01-31 10:11:11,616 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2022-01-31 10:11:11,616 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1160799089] [2022-01-31 10:11:11,616 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-01-31 10:11:11,616 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-01-31 10:11:11,616 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-31 10:11:11,616 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-01-31 10:11:11,617 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=102, Invalid=549, Unknown=3, NotChecked=48, Total=702 [2022-01-31 10:11:11,617 INFO L87 Difference]: Start difference. First operand 38 states and 46 transitions. Second operand has 19 states, 19 states have (on average 1.8421052631578947) internal successors, (35), 17 states have internal predecessors, (35), 4 states have call successors, (6), 4 states have call predecessors, (6), 4 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) [2022-01-31 10:11:12,419 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 10:11:12,419 INFO L93 Difference]: Finished difference Result 96 states and 121 transitions. [2022-01-31 10:11:12,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-01-31 10:11:12,420 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 1.8421052631578947) internal successors, (35), 17 states have internal predecessors, (35), 4 states have call successors, (6), 4 states have call predecessors, (6), 4 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) Word has length 45 [2022-01-31 10:11:12,420 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 10:11:12,422 INFO L225 Difference]: With dead ends: 96 [2022-01-31 10:11:12,422 INFO L226 Difference]: Without dead ends: 93 [2022-01-31 10:11:12,423 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 35 SyntacticMatches, 1 SemanticMatches, 42 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 382 ImplicationChecksByTransitivity, 7.4s TimeCoverageRelationStatistics Valid=321, Invalid=1486, Unknown=3, NotChecked=82, Total=1892 [2022-01-31 10:11:12,423 INFO L933 BasicCegarLoop]: 29 mSDtfsCounter, 164 mSDsluCounter, 196 mSDsCounter, 0 mSdLazyCounter, 322 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 167 SdHoareTripleChecker+Valid, 225 SdHoareTripleChecker+Invalid, 481 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 322 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 111 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-31 10:11:12,424 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [167 Valid, 225 Invalid, 481 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 322 Invalid, 0 Unknown, 111 Unchecked, 0.2s Time] [2022-01-31 10:11:12,424 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2022-01-31 10:11:12,427 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 67. [2022-01-31 10:11:12,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67 states, 55 states have (on average 1.2727272727272727) internal successors, (70), 55 states have internal predecessors, (70), 8 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-01-31 10:11:12,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 84 transitions. [2022-01-31 10:11:12,428 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 84 transitions. Word has length 45 [2022-01-31 10:11:12,428 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 10:11:12,428 INFO L470 AbstractCegarLoop]: Abstraction has 67 states and 84 transitions. [2022-01-31 10:11:12,429 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 1.8421052631578947) internal successors, (35), 17 states have internal predecessors, (35), 4 states have call successors, (6), 4 states have call predecessors, (6), 4 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) [2022-01-31 10:11:12,429 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 84 transitions. [2022-01-31 10:11:12,429 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2022-01-31 10:11:12,429 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 10:11:12,430 INFO L514 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1] [2022-01-31 10:11:12,448 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 10:11:12,630 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-31 10:11:12,630 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 10:11:12,631 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 10:11:12,631 INFO L85 PathProgramCache]: Analyzing trace with hash 537352380, now seen corresponding path program 1 times [2022-01-31 10:11:12,631 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-31 10:11:12,631 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [699700944] [2022-01-31 10:11:12,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 10:11:12,631 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 10:11:12,641 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-01-31 10:11:12,641 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2124088133] [2022-01-31 10:11:12,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 10:11:12,642 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-31 10:11:12,642 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-31 10:11:12,646 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 10:11:12,647 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 10:11:12,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 10:11:12,696 INFO L263 TraceCheckSpWp]: Trace formula consists of 173 conjuncts, 14 conjunts are in the unsatisfiable core [2022-01-31 10:11:12,701 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-31 10:11:12,862 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 13 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-31 10:11:12,862 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-31 10:11:13,179 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 10 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-01-31 10:11:13,179 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-31 10:11:13,179 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [699700944] [2022-01-31 10:11:13,179 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-01-31 10:11:13,179 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2124088133] [2022-01-31 10:11:13,179 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2124088133] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-31 10:11:13,179 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-01-31 10:11:13,179 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11] total 18 [2022-01-31 10:11:13,180 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1488525633] [2022-01-31 10:11:13,180 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-01-31 10:11:13,180 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-01-31 10:11:13,180 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-31 10:11:13,180 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-01-31 10:11:13,180 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=241, Unknown=0, NotChecked=0, Total=306 [2022-01-31 10:11:13,181 INFO L87 Difference]: Start difference. First operand 67 states and 84 transitions. Second operand has 18 states, 16 states have (on average 2.625) internal successors, (42), 13 states have internal predecessors, (42), 5 states have call successors, (8), 4 states have call predecessors, (8), 5 states have return successors, (6), 5 states have call predecessors, (6), 4 states have call successors, (6) [2022-01-31 10:11:13,586 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 10:11:13,586 INFO L93 Difference]: Finished difference Result 118 states and 141 transitions. [2022-01-31 10:11:13,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-01-31 10:11:13,587 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 16 states have (on average 2.625) internal successors, (42), 13 states have internal predecessors, (42), 5 states have call successors, (8), 4 states have call predecessors, (8), 5 states have return successors, (6), 5 states have call predecessors, (6), 4 states have call successors, (6) Word has length 45 [2022-01-31 10:11:13,587 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 10:11:13,587 INFO L225 Difference]: With dead ends: 118 [2022-01-31 10:11:13,588 INFO L226 Difference]: Without dead ends: 118 [2022-01-31 10:11:13,588 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 73 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 199 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=189, Invalid=803, Unknown=0, NotChecked=0, Total=992 [2022-01-31 10:11:13,588 INFO L933 BasicCegarLoop]: 30 mSDtfsCounter, 113 mSDsluCounter, 209 mSDsCounter, 0 mSdLazyCounter, 366 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 113 SdHoareTripleChecker+Valid, 239 SdHoareTripleChecker+Invalid, 416 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 366 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-31 10:11:13,589 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [113 Valid, 239 Invalid, 416 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 366 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-31 10:11:13,590 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2022-01-31 10:11:13,593 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 71. [2022-01-31 10:11:13,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71 states, 57 states have (on average 1.2105263157894737) internal successors, (69), 58 states have internal predecessors, (69), 9 states have call successors, (9), 6 states have call predecessors, (9), 4 states have return successors, (7), 6 states have call predecessors, (7), 7 states have call successors, (7) [2022-01-31 10:11:13,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 85 transitions. [2022-01-31 10:11:13,594 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 85 transitions. Word has length 45 [2022-01-31 10:11:13,594 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 10:11:13,594 INFO L470 AbstractCegarLoop]: Abstraction has 71 states and 85 transitions. [2022-01-31 10:11:13,594 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 16 states have (on average 2.625) internal successors, (42), 13 states have internal predecessors, (42), 5 states have call successors, (8), 4 states have call predecessors, (8), 5 states have return successors, (6), 5 states have call predecessors, (6), 4 states have call successors, (6) [2022-01-31 10:11:13,594 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 85 transitions. [2022-01-31 10:11:13,595 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-01-31 10:11:13,595 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 10:11:13,595 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 10:11:13,614 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 10:11:13,811 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-31 10:11:13,812 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 10:11:13,812 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 10:11:13,812 INFO L85 PathProgramCache]: Analyzing trace with hash 254999865, now seen corresponding path program 2 times [2022-01-31 10:11:13,812 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-31 10:11:13,812 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1798865942] [2022-01-31 10:11:13,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 10:11:13,812 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 10:11:13,819 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-01-31 10:11:13,819 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1596999036] [2022-01-31 10:11:13,820 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-31 10:11:13,820 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-31 10:11:13,820 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-31 10:11:13,821 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 10:11:13,822 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 10:11:13,870 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-31 10:11:13,870 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-31 10:11:13,871 INFO L263 TraceCheckSpWp]: Trace formula consists of 176 conjuncts, 6 conjunts are in the unsatisfiable core [2022-01-31 10:11:13,873 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-31 10:11:13,967 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 14 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-01-31 10:11:13,967 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-31 10:11:14,050 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-01-31 10:11:14,050 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-31 10:11:14,050 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1798865942] [2022-01-31 10:11:14,051 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-01-31 10:11:14,051 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1596999036] [2022-01-31 10:11:14,051 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1596999036] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-31 10:11:14,051 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-01-31 10:11:14,051 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2022-01-31 10:11:14,051 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1591640956] [2022-01-31 10:11:14,051 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-01-31 10:11:14,052 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-01-31 10:11:14,052 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-31 10:11:14,052 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-01-31 10:11:14,052 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2022-01-31 10:11:14,053 INFO L87 Difference]: Start difference. First operand 71 states and 85 transitions. Second operand has 9 states, 9 states have (on average 4.222222222222222) internal successors, (38), 9 states have internal predecessors, (38), 3 states have call successors, (8), 3 states have call predecessors, (8), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-01-31 10:11:14,192 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 10:11:14,192 INFO L93 Difference]: Finished difference Result 103 states and 122 transitions. [2022-01-31 10:11:14,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-31 10:11:14,193 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.222222222222222) internal successors, (38), 9 states have internal predecessors, (38), 3 states have call successors, (8), 3 states have call predecessors, (8), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 47 [2022-01-31 10:11:14,193 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 10:11:14,194 INFO L225 Difference]: With dead ends: 103 [2022-01-31 10:11:14,194 INFO L226 Difference]: Without dead ends: 103 [2022-01-31 10:11:14,194 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 86 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 10:11:14,194 INFO L933 BasicCegarLoop]: 41 mSDtfsCounter, 118 mSDsluCounter, 96 mSDsCounter, 0 mSdLazyCounter, 133 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 120 SdHoareTripleChecker+Valid, 137 SdHoareTripleChecker+Invalid, 179 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 133 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 10:11:14,195 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [120 Valid, 137 Invalid, 179 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 133 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 10:11:14,195 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2022-01-31 10:11:14,198 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 79. [2022-01-31 10:11:14,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 79 states, 65 states have (on average 1.1846153846153846) internal successors, (77), 66 states have internal predecessors, (77), 9 states have call successors, (9), 6 states have call predecessors, (9), 4 states have return successors, (7), 6 states have call predecessors, (7), 7 states have call successors, (7) [2022-01-31 10:11:14,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 93 transitions. [2022-01-31 10:11:14,199 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 93 transitions. Word has length 47 [2022-01-31 10:11:14,199 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 10:11:14,199 INFO L470 AbstractCegarLoop]: Abstraction has 79 states and 93 transitions. [2022-01-31 10:11:14,199 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.222222222222222) internal successors, (38), 9 states have internal predecessors, (38), 3 states have call successors, (8), 3 states have call predecessors, (8), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-01-31 10:11:14,199 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 93 transitions. [2022-01-31 10:11:14,200 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-01-31 10:11:14,200 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 10:11:14,200 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 10:11:14,218 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 10:11:14,407 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-31 10:11:14,407 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 10:11:14,408 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 10:11:14,408 INFO L85 PathProgramCache]: Analyzing trace with hash 136360195, now seen corresponding path program 3 times [2022-01-31 10:11:14,408 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-31 10:11:14,408 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1663154551] [2022-01-31 10:11:14,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 10:11:14,408 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 10:11:14,424 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-01-31 10:11:14,424 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1488847597] [2022-01-31 10:11:14,424 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-31 10:11:14,424 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-31 10:11:14,424 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-31 10:11:14,426 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 10:11:14,427 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 10:11:14,483 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-01-31 10:11:14,484 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-31 10:11:14,485 INFO L263 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 30 conjunts are in the unsatisfiable core [2022-01-31 10:11:14,486 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-31 10:11:14,664 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 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 181 treesize of output 172 [2022-01-31 10:11:14,668 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 4 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 174 treesize of output 183 [2022-01-31 10:11:14,681 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 3 [2022-01-31 10:11:14,713 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 3 [2022-01-31 10:11:14,768 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 3 [2022-01-31 10:11:14,815 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 3 [2022-01-31 10:11:14,872 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 23 treesize of output 3 [2022-01-31 10:11:14,907 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 23 treesize of output 3 [2022-01-31 10:11:14,945 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 27 treesize of output 3 [2022-01-31 10:11:14,964 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 27 treesize of output 3 [2022-01-31 10:11:35,790 WARN L228 SmtUtils]: Spent 20.10s on a formula simplification. DAG size of input: 96 DAG size of output: 59 (called from [L 350] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2022-01-31 10:11:35,791 INFO L353 Elim1Store]: treesize reduction 449, result has 26.5 percent of original size [2022-01-31 10:11:35,792 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 217 treesize of output 256 [2022-01-31 10:12:45,826 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 8 proven. 5 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-01-31 10:12:45,826 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-31 10:12:46,402 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 178 treesize of output 170 [2022-01-31 10:12:46,419 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-31 10:12:46,420 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 4 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 170 treesize of output 183 [2022-01-31 10:12:46,445 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 28 treesize of output 4 [2022-01-31 10:12:46,474 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 26 treesize of output 4 [2022-01-31 10:12:46,490 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 4 [2022-01-31 10:12:46,536 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-31 10:12:46,536 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 41 [2022-01-31 10:12:46,590 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-31 10:12:46,590 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 98 treesize of output 100 [2022-01-31 10:12:49,868 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-31 10:12:49,868 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1663154551] [2022-01-31 10:12:49,868 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-01-31 10:12:49,868 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1488847597] [2022-01-31 10:12:49,868 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1488847597] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-31 10:12:49,868 INFO L186 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-01-31 10:12:49,869 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2022-01-31 10:12:49,869 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [982061923] [2022-01-31 10:12:49,869 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-01-31 10:12:49,869 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-01-31 10:12:49,869 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-31 10:12:49,869 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-01-31 10:12:49,870 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=458, Unknown=3, NotChecked=0, Total=552 [2022-01-31 10:12:49,870 INFO L87 Difference]: Start difference. First operand 79 states and 93 transitions. Second operand has 16 states, 15 states have (on average 2.3333333333333335) internal successors, (35), 15 states have internal predecessors, (35), 4 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (4), 2 states have call predecessors, (4), 3 states have call successors, (4) [2022-01-31 10:12:52,437 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 10:12:52,437 INFO L93 Difference]: Finished difference Result 98 states and 114 transitions. [2022-01-31 10:12:52,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-01-31 10:12:52,437 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 2.3333333333333335) internal successors, (35), 15 states have internal predecessors, (35), 4 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (4), 2 states have call predecessors, (4), 3 states have call successors, (4) Word has length 47 [2022-01-31 10:12:52,438 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 10:12:52,438 INFO L225 Difference]: With dead ends: 98 [2022-01-31 10:12:52,438 INFO L226 Difference]: Without dead ends: 95 [2022-01-31 10:12:52,438 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 37 SyntacticMatches, 4 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 231 ImplicationChecksByTransitivity, 13.4s TimeCoverageRelationStatistics Valid=177, Invalid=941, Unknown=4, NotChecked=0, Total=1122 [2022-01-31 10:12:52,439 INFO L933 BasicCegarLoop]: 28 mSDtfsCounter, 41 mSDsluCounter, 226 mSDsCounter, 0 mSdLazyCounter, 147 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 254 SdHoareTripleChecker+Invalid, 269 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 147 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 114 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 10:12:52,439 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [41 Valid, 254 Invalid, 269 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 147 Invalid, 0 Unknown, 114 Unchecked, 0.1s Time] [2022-01-31 10:12:52,439 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2022-01-31 10:12:52,443 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 90. [2022-01-31 10:12:52,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 90 states, 75 states have (on average 1.1866666666666668) internal successors, (89), 76 states have internal predecessors, (89), 9 states have call successors, (9), 7 states have call predecessors, (9), 5 states have return successors, (7), 6 states have call predecessors, (7), 7 states have call successors, (7) [2022-01-31 10:12:52,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 105 transitions. [2022-01-31 10:12:52,444 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 105 transitions. Word has length 47 [2022-01-31 10:12:52,444 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 10:12:52,444 INFO L470 AbstractCegarLoop]: Abstraction has 90 states and 105 transitions. [2022-01-31 10:12:52,444 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 2.3333333333333335) internal successors, (35), 15 states have internal predecessors, (35), 4 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (4), 2 states have call predecessors, (4), 3 states have call successors, (4) [2022-01-31 10:12:52,444 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 105 transitions. [2022-01-31 10:12:52,445 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-01-31 10:12:52,445 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 10:12:52,445 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 10:12:52,469 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 10:12:52,645 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-31 10:12:52,646 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 10:12:52,646 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 10:12:52,646 INFO L85 PathProgramCache]: Analyzing trace with hash -879732607, now seen corresponding path program 2 times [2022-01-31 10:12:52,646 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-31 10:12:52,646 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1677398734] [2022-01-31 10:12:52,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 10:12:52,647 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 10:12:52,653 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-01-31 10:12:52,653 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [896524341] [2022-01-31 10:12:52,653 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-31 10:12:52,653 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-31 10:12:52,653 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-31 10:12:52,654 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 10:12:52,657 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 10:12:52,703 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-31 10:12:52,703 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-31 10:12:52,704 INFO L263 TraceCheckSpWp]: Trace formula consists of 180 conjuncts, 6 conjunts are in the unsatisfiable core [2022-01-31 10:12:52,705 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-31 10:12:52,839 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 9 proven. 4 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-01-31 10:12:52,839 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-31 10:12:52,928 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-01-31 10:12:52,928 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-31 10:12:52,928 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1677398734] [2022-01-31 10:12:52,928 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-01-31 10:12:52,928 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [896524341] [2022-01-31 10:12:52,928 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [896524341] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-31 10:12:52,928 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-01-31 10:12:52,928 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 11 [2022-01-31 10:12:52,929 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [556976131] [2022-01-31 10:12:52,929 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-01-31 10:12:52,929 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-01-31 10:12:52,929 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-31 10:12:52,929 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-01-31 10:12:52,929 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2022-01-31 10:12:52,930 INFO L87 Difference]: Start difference. First operand 90 states and 105 transitions. Second operand has 11 states, 11 states have (on average 3.8181818181818183) internal successors, (42), 11 states have internal predecessors, (42), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-01-31 10:12:53,122 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 10:12:53,122 INFO L93 Difference]: Finished difference Result 120 states and 143 transitions. [2022-01-31 10:12:53,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-01-31 10:12:53,122 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.8181818181818183) internal successors, (42), 11 states have internal predecessors, (42), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 47 [2022-01-31 10:12:53,123 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 10:12:53,123 INFO L225 Difference]: With dead ends: 120 [2022-01-31 10:12:53,123 INFO L226 Difference]: Without dead ends: 120 [2022-01-31 10:12:53,123 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 84 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=82, Invalid=190, Unknown=0, NotChecked=0, Total=272 [2022-01-31 10:12:53,124 INFO L933 BasicCegarLoop]: 30 mSDtfsCounter, 38 mSDsluCounter, 141 mSDsCounter, 0 mSdLazyCounter, 167 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 171 SdHoareTripleChecker+Invalid, 197 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 167 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 10:12:53,124 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [40 Valid, 171 Invalid, 197 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 167 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 10:12:53,124 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120 states. [2022-01-31 10:12:53,128 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120 to 104. [2022-01-31 10:12:53,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 104 states, 89 states have (on average 1.202247191011236) internal successors, (107), 90 states have internal predecessors, (107), 9 states have call successors, (9), 7 states have call predecessors, (9), 5 states have return successors, (7), 6 states have call predecessors, (7), 7 states have call successors, (7) [2022-01-31 10:12:53,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 123 transitions. [2022-01-31 10:12:53,128 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 123 transitions. Word has length 47 [2022-01-31 10:12:53,129 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 10:12:53,129 INFO L470 AbstractCegarLoop]: Abstraction has 104 states and 123 transitions. [2022-01-31 10:12:53,129 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.8181818181818183) internal successors, (42), 11 states have internal predecessors, (42), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-01-31 10:12:53,129 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 123 transitions. [2022-01-31 10:12:53,129 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2022-01-31 10:12:53,129 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 10:12:53,130 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 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] [2022-01-31 10:12:53,146 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2022-01-31 10:12:53,343 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2022-01-31 10:12:53,343 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 10:12:53,344 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 10:12:53,344 INFO L85 PathProgramCache]: Analyzing trace with hash -934952062, now seen corresponding path program 4 times [2022-01-31 10:12:53,344 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-31 10:12:53,344 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1947673208] [2022-01-31 10:12:53,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 10:12:53,344 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 10:12:53,356 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-01-31 10:12:53,356 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [883312097] [2022-01-31 10:12:53,356 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-31 10:12:53,356 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-31 10:12:53,356 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-31 10:12:53,359 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 10:12:53,360 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 10:12:53,397 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-31 10:12:53,397 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-31 10:12:53,398 INFO L263 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 6 conjunts are in the unsatisfiable core [2022-01-31 10:12:53,399 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-31 10:12:53,494 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 18 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-01-31 10:12:53,494 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-31 10:12:53,583 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 10 proven. 1 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-01-31 10:12:53,584 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-31 10:12:53,584 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1947673208] [2022-01-31 10:12:53,584 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-01-31 10:12:53,584 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [883312097] [2022-01-31 10:12:53,584 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [883312097] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-31 10:12:53,584 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-01-31 10:12:53,584 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2022-01-31 10:12:53,584 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [408802654] [2022-01-31 10:12:53,584 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-01-31 10:12:53,584 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-01-31 10:12:53,585 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-31 10:12:53,585 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-01-31 10:12:53,585 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2022-01-31 10:12:53,585 INFO L87 Difference]: Start difference. First operand 104 states and 123 transitions. Second operand has 9 states, 9 states have (on average 4.888888888888889) internal successors, (44), 9 states have internal predecessors, (44), 3 states have call successors, (8), 3 states have call predecessors, (8), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-01-31 10:12:53,759 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 10:12:53,760 INFO L93 Difference]: Finished difference Result 115 states and 132 transitions. [2022-01-31 10:12:53,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-01-31 10:12:53,760 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.888888888888889) internal successors, (44), 9 states have internal predecessors, (44), 3 states have call successors, (8), 3 states have call predecessors, (8), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 50 [2022-01-31 10:12:53,760 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 10:12:53,761 INFO L225 Difference]: With dead ends: 115 [2022-01-31 10:12:53,761 INFO L226 Difference]: Without dead ends: 85 [2022-01-31 10:12:53,761 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 92 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=68, Invalid=142, Unknown=0, NotChecked=0, Total=210 [2022-01-31 10:12:53,761 INFO L933 BasicCegarLoop]: 31 mSDtfsCounter, 50 mSDsluCounter, 127 mSDsCounter, 0 mSdLazyCounter, 165 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 158 SdHoareTripleChecker+Invalid, 192 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 165 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 10:12:53,761 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [52 Valid, 158 Invalid, 192 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 165 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 10:12:53,762 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2022-01-31 10:12:53,764 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 76. [2022-01-31 10:12:53,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76 states, 66 states have (on average 1.2121212121212122) internal successors, (80), 66 states have internal predecessors, (80), 6 states have call successors, (6), 5 states have call predecessors, (6), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 10:12:53,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 90 transitions. [2022-01-31 10:12:53,764 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 90 transitions. Word has length 50 [2022-01-31 10:12:53,764 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 10:12:53,764 INFO L470 AbstractCegarLoop]: Abstraction has 76 states and 90 transitions. [2022-01-31 10:12:53,764 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.888888888888889) internal successors, (44), 9 states have internal predecessors, (44), 3 states have call successors, (8), 3 states have call predecessors, (8), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-01-31 10:12:53,764 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 90 transitions. [2022-01-31 10:12:53,765 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2022-01-31 10:12:53,765 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 10:12:53,765 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 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] [2022-01-31 10:12:53,782 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 10:12:53,979 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-01-31 10:12:53,979 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 10:12:53,980 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 10:12:53,980 INFO L85 PathProgramCache]: Analyzing trace with hash -1798136888, now seen corresponding path program 3 times [2022-01-31 10:12:53,980 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-31 10:12:53,980 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [248857138] [2022-01-31 10:12:53,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 10:12:53,980 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 10:12:53,996 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-01-31 10:12:53,996 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [976817964] [2022-01-31 10:12:53,996 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-31 10:12:53,996 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-31 10:12:53,996 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-31 10:12:53,998 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 10:12:53,999 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 10:12:54,045 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-01-31 10:12:54,046 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-31 10:12:54,046 INFO L263 TraceCheckSpWp]: Trace formula consists of 160 conjuncts, 14 conjunts are in the unsatisfiable core [2022-01-31 10:12:54,048 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-31 10:12:54,227 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 11 proven. 1 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-01-31 10:12:54,228 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-31 10:12:54,528 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2022-01-31 10:12:54,528 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-31 10:12:54,528 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [248857138] [2022-01-31 10:12:54,528 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-01-31 10:12:54,528 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [976817964] [2022-01-31 10:12:54,528 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [976817964] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-31 10:12:54,528 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-01-31 10:12:54,529 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11] total 19 [2022-01-31 10:12:54,529 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [471201829] [2022-01-31 10:12:54,529 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-01-31 10:12:54,529 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-01-31 10:12:54,529 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-31 10:12:54,529 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-01-31 10:12:54,530 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=263, Unknown=0, NotChecked=0, Total=342 [2022-01-31 10:12:54,530 INFO L87 Difference]: Start difference. First operand 76 states and 90 transitions. Second operand has 19 states, 17 states have (on average 2.823529411764706) internal successors, (48), 14 states have internal predecessors, (48), 4 states have call successors, (7), 3 states have call predecessors, (7), 4 states have return successors, (6), 5 states have call predecessors, (6), 3 states have call successors, (6) [2022-01-31 10:12:54,886 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 10:12:54,887 INFO L93 Difference]: Finished difference Result 129 states and 153 transitions. [2022-01-31 10:12:54,887 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-01-31 10:12:54,887 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 17 states have (on average 2.823529411764706) internal successors, (48), 14 states have internal predecessors, (48), 4 states have call successors, (7), 3 states have call predecessors, (7), 4 states have return successors, (6), 5 states have call predecessors, (6), 3 states have call successors, (6) Word has length 54 [2022-01-31 10:12:54,888 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 10:12:54,888 INFO L225 Difference]: With dead ends: 129 [2022-01-31 10:12:54,888 INFO L226 Difference]: Without dead ends: 129 [2022-01-31 10:12:54,888 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 90 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 180 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=211, Invalid=659, Unknown=0, NotChecked=0, Total=870 [2022-01-31 10:12:54,889 INFO L933 BasicCegarLoop]: 37 mSDtfsCounter, 117 mSDsluCounter, 158 mSDsCounter, 0 mSdLazyCounter, 301 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 120 SdHoareTripleChecker+Valid, 195 SdHoareTripleChecker+Invalid, 328 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 301 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-31 10:12:54,889 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [120 Valid, 195 Invalid, 328 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 301 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-31 10:12:54,889 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states. [2022-01-31 10:12:54,891 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 69. [2022-01-31 10:12:54,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69 states, 59 states have (on average 1.2033898305084745) internal successors, (71), 59 states have internal predecessors, (71), 6 states have call successors, (6), 5 states have call predecessors, (6), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 10:12:54,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 81 transitions. [2022-01-31 10:12:54,892 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 81 transitions. Word has length 54 [2022-01-31 10:12:54,892 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 10:12:54,892 INFO L470 AbstractCegarLoop]: Abstraction has 69 states and 81 transitions. [2022-01-31 10:12:54,892 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 17 states have (on average 2.823529411764706) internal successors, (48), 14 states have internal predecessors, (48), 4 states have call successors, (7), 3 states have call predecessors, (7), 4 states have return successors, (6), 5 states have call predecessors, (6), 3 states have call successors, (6) [2022-01-31 10:12:54,892 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 81 transitions. [2022-01-31 10:12:54,892 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2022-01-31 10:12:54,892 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 10:12:54,893 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 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] [2022-01-31 10:12:54,909 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-01-31 10:12:55,107 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2022-01-31 10:12:55,107 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 10:12:55,107 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 10:12:55,108 INFO L85 PathProgramCache]: Analyzing trace with hash 59148278, now seen corresponding path program 5 times [2022-01-31 10:12:55,108 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-31 10:12:55,108 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1652555064] [2022-01-31 10:12:55,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 10:12:55,108 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 10:12:55,114 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-01-31 10:12:55,115 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1245437615] [2022-01-31 10:12:55,115 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-01-31 10:12:55,115 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-31 10:12:55,115 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-31 10:12:55,116 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 10:12:55,117 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 10:12:55,192 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 8 check-sat command(s) [2022-01-31 10:12:55,192 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-31 10:12:55,193 INFO L263 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 6 conjunts are in the unsatisfiable core [2022-01-31 10:12:55,194 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-31 10:12:55,322 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 16 proven. 17 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-01-31 10:12:55,322 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-31 10:12:55,420 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 8 proven. 17 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2022-01-31 10:12:55,420 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-31 10:12:55,420 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1652555064] [2022-01-31 10:12:55,420 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-01-31 10:12:55,420 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1245437615] [2022-01-31 10:12:55,420 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1245437615] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-31 10:12:55,420 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-01-31 10:12:55,420 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2022-01-31 10:12:55,420 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [298610808] [2022-01-31 10:12:55,420 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-01-31 10:12:55,421 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-01-31 10:12:55,421 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-31 10:12:55,421 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-01-31 10:12:55,421 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2022-01-31 10:12:55,421 INFO L87 Difference]: Start difference. First operand 69 states and 81 transitions. Second operand has 9 states, 9 states have (on average 5.0) internal successors, (45), 9 states have internal predecessors, (45), 3 states have call successors, (8), 3 states have call predecessors, (8), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-01-31 10:12:55,633 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 10:12:55,633 INFO L93 Difference]: Finished difference Result 65 states and 74 transitions. [2022-01-31 10:12:55,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-01-31 10:12:55,633 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.0) internal successors, (45), 9 states have internal predecessors, (45), 3 states have call successors, (8), 3 states have call predecessors, (8), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 59 [2022-01-31 10:12:55,633 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 10:12:55,634 INFO L225 Difference]: With dead ends: 65 [2022-01-31 10:12:55,634 INFO L226 Difference]: Without dead ends: 65 [2022-01-31 10:12:55,634 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 110 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=105, Invalid=201, Unknown=0, NotChecked=0, Total=306 [2022-01-31 10:12:55,634 INFO L933 BasicCegarLoop]: 28 mSDtfsCounter, 54 mSDsluCounter, 96 mSDsCounter, 0 mSdLazyCounter, 148 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 54 SdHoareTripleChecker+Valid, 124 SdHoareTripleChecker+Invalid, 176 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 148 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 10:12:55,635 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [54 Valid, 124 Invalid, 176 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 148 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 10:12:55,635 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2022-01-31 10:12:55,645 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 62. [2022-01-31 10:12:55,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62 states, 52 states have (on average 1.1730769230769231) internal successors, (61), 52 states have internal predecessors, (61), 6 states have call successors, (6), 5 states have call predecessors, (6), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 10:12:55,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 71 transitions. [2022-01-31 10:12:55,646 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 71 transitions. Word has length 59 [2022-01-31 10:12:55,646 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 10:12:55,646 INFO L470 AbstractCegarLoop]: Abstraction has 62 states and 71 transitions. [2022-01-31 10:12:55,647 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.0) internal successors, (45), 9 states have internal predecessors, (45), 3 states have call successors, (8), 3 states have call predecessors, (8), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-01-31 10:12:55,647 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 71 transitions. [2022-01-31 10:12:55,647 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-01-31 10:12:55,647 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 10:12:55,647 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 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] [2022-01-31 10:12:55,664 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 10:12:55,851 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,SelfDestructingSolverStorable11 [2022-01-31 10:12:55,851 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 10:12:55,852 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 10:12:55,852 INFO L85 PathProgramCache]: Analyzing trace with hash -1103606634, now seen corresponding path program 6 times [2022-01-31 10:12:55,852 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-31 10:12:55,852 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [935663275] [2022-01-31 10:12:55,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 10:12:55,852 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 10:12:55,859 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-01-31 10:12:55,859 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1363920815] [2022-01-31 10:12:55,859 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-01-31 10:12:55,860 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-31 10:12:55,860 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-31 10:12:55,860 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 10:12:55,861 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 10:12:56,221 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 9 check-sat command(s) [2022-01-31 10:12:56,221 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-31 10:12:56,223 INFO L263 TraceCheckSpWp]: Trace formula consists of 219 conjuncts, 87 conjunts are in the unsatisfiable core [2022-01-31 10:12:56,227 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-31 10:12:56,304 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 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 55 treesize of output 50 [2022-01-31 10:12:56,308 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 18 treesize of output 17 [2022-01-31 10:12:56,320 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 16 treesize of output 15 [2022-01-31 10:12:56,392 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 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 76 treesize of output 69 [2022-01-31 10:12:56,399 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-31 10:12:56,419 INFO L353 Elim1Store]: treesize reduction 128, result has 17.4 percent of original size [2022-01-31 10:12:56,420 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 2 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 68 treesize of output 90 [2022-01-31 10:12:56,431 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:12:56,432 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 42 treesize of output 17 [2022-01-31 10:12:56,470 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:12:56,471 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 57 treesize of output 22 [2022-01-31 10:12:56,754 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 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 80 treesize of output 71 [2022-01-31 10:12:56,759 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:12:56,760 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:12:56,761 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:12:56,762 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:12:56,763 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:12:56,763 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:12:56,764 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 2 stores, 2 select indices, 2 select index equivalence classes, 6 disjoint index pairs (out of 1 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 70 treesize of output 95 [2022-01-31 10:12:56,811 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:12:56,812 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:12:56,812 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:12:56,813 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 48 treesize of output 22 [2022-01-31 10:12:56,982 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 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 83 treesize of output 72 [2022-01-31 10:12:56,987 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:12:56,988 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:12:56,989 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:12:56,989 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:12:56,990 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:12:56,991 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:12:56,992 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:12:56,993 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:12:56,994 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:12:56,995 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:12:56,996 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 2 stores, 3 select indices, 3 select index equivalence classes, 10 disjoint index pairs (out of 3 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 71 treesize of output 110 [2022-01-31 10:12:57,030 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:12:57,032 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:12:57,033 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:12:57,034 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:12:57,035 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:12:57,037 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:12:57,037 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 49 treesize of output 23 [2022-01-31 10:12:58,119 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 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 107 treesize of output 94 [2022-01-31 10:12:58,125 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:12:58,126 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:12:58,127 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:12:58,128 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:12:58,130 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:12:58,131 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:12:58,132 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:12:58,134 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:12:58,136 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:12:58,136 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:12:58,144 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:12:58,221 INFO L353 Elim1Store]: treesize reduction 83, result has 46.8 percent of original size [2022-01-31 10:12:58,221 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 2 stores, 4 select indices, 4 select index equivalence classes, 11 disjoint index pairs (out of 6 index pairs), introduced 6 new quantified variables, introduced 3 case distinctions, treesize of input 93 treesize of output 197 [2022-01-31 10:12:58,329 WARN L234 Elim1Store]: Array PQE input equivalent to false [2022-01-31 10:12:58,593 WARN L234 Elim1Store]: Array PQE input equivalent to false [2022-01-31 10:12:58,761 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:12:58,762 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:12:58,763 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:12:58,765 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:12:58,767 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:12:58,768 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:12:58,770 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:12:58,771 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:12:58,774 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:12:58,789 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-31 10:12:58,790 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 9 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 1 case distinctions, treesize of input 301 treesize of output 260 [2022-01-31 10:12:59,624 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 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 388 treesize of output 353 [2022-01-31 10:12:59,630 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:12:59,632 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:12:59,633 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:12:59,634 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:12:59,639 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:12:59,641 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:12:59,646 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:12:59,656 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:12:59,661 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:12:59,664 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:12:59,670 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:12:59,675 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:12:59,676 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:12:59,681 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:12:59,685 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:12:59,690 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:12:59,693 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:12:59,695 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:12:59,697 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:12:59,700 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:12:59,702 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:12:59,703 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:12:59,704 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:13:01,001 INFO L353 Elim1Store]: treesize reduction 495, result has 30.8 percent of original size [2022-01-31 10:13:01,002 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 4 stores, 5 select indices, 5 select index equivalence classes, 23 disjoint index pairs (out of 10 index pairs), introduced 9 new quantified variables, introduced 12 case distinctions, treesize of input 356 treesize of output 608 [2022-01-31 10:13:01,100 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:13:01,102 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:13:01,109 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:13:01,114 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:13:01,117 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:13:01,123 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:13:01,126 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:13:01,146 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:13:01,152 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:13:01,159 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:13:01,169 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:13:01,179 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:13:01,180 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:13:01,186 INFO L353 Elim1Store]: treesize reduction 45, result has 2.2 percent of original size [2022-01-31 10:13:01,187 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 13 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 2 case distinctions, treesize of input 119 treesize of output 58 [2022-01-31 10:13:01,233 WARN L234 Elim1Store]: Array PQE input equivalent to false [2022-01-31 10:13:01,273 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:13:01,278 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:13:01,293 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:13:01,297 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:13:01,303 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:13:01,310 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:13:01,326 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:13:01,345 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:13:01,346 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:13:01,353 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:13:01,360 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:13:01,364 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:13:01,426 INFO L353 Elim1Store]: treesize reduction 40, result has 49.4 percent of original size [2022-01-31 10:13:01,427 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 12 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 3 case distinctions, treesize of input 154 treesize of output 132 [2022-01-31 10:13:02,426 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:13:02,428 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:13:02,429 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:13:02,432 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:13:02,433 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:13:02,443 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:13:02,450 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:13:02,451 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:13:02,453 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:13:02,454 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:13:02,457 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:13:02,525 INFO L353 Elim1Store]: treesize reduction 41, result has 50.6 percent of original size [2022-01-31 10:13:02,526 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 11 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 4 case distinctions, treesize of input 411 treesize of output 283 [2022-01-31 10:15:01,883 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:15:01,901 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:15:01,902 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:15:01,904 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:15:01,906 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:15:01,914 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:15:01,915 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-31 10:15:01,917 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:15:01,920 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:15:01,922 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:15:01,924 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:15:01,933 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:15:01,934 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:15:01,936 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:15:01,938 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:15:01,949 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:15:01,951 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:15:01,960 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:15:01,962 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:15:01,965 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:15:01,968 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:15:01,971 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:15:01,980 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-31 10:15:03,145 INFO L353 Elim1Store]: treesize reduction 374, result has 45.2 percent of original size [2022-01-31 10:15:03,145 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 11 select indices, 11 select index equivalence classes, 17 disjoint index pairs (out of 55 index pairs), introduced 11 new quantified variables, introduced 55 case distinctions, treesize of input 477 treesize of output 543 [2022-01-31 10:15:51,908 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 13 proven. 48 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-31 10:15:51,909 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-31 10:16:39,096 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-31 10:16:39,097 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [935663275] [2022-01-31 10:16:39,097 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-01-31 10:16:39,097 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1363920815] [2022-01-31 10:16:39,097 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1363920815] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-31 10:16:39,097 INFO L186 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-01-31 10:16:39,097 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [37] total 37 [2022-01-31 10:16:39,097 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [72655155] [2022-01-31 10:16:39,097 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-01-31 10:16:39,097 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2022-01-31 10:16:39,097 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-31 10:16:39,098 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2022-01-31 10:16:39,098 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=373, Invalid=2689, Unknown=18, NotChecked=0, Total=3080 [2022-01-31 10:16:39,098 INFO L87 Difference]: Start difference. First operand 62 states and 71 transitions. Second operand has 37 states, 36 states have (on average 1.4722222222222223) internal successors, (53), 35 states have internal predecessors, (53), 4 states have call successors, (6), 4 states have call predecessors, (6), 4 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) [2022-01-31 10:16:40,244 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 10:16:40,244 INFO L93 Difference]: Finished difference Result 102 states and 119 transitions. [2022-01-31 10:16:40,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2022-01-31 10:16:40,245 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 36 states have (on average 1.4722222222222223) internal successors, (53), 35 states have internal predecessors, (53), 4 states have call successors, (6), 4 states have call predecessors, (6), 4 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) Word has length 63 [2022-01-31 10:16:40,245 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 10:16:40,245 INFO L225 Difference]: With dead ends: 102 [2022-01-31 10:16:40,245 INFO L226 Difference]: Without dead ends: 99 [2022-01-31 10:16:40,246 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 31 SyntacticMatches, 3 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1455 ImplicationChecksByTransitivity, 63.0s TimeCoverageRelationStatistics Valid=421, Invalid=3101, Unknown=18, NotChecked=0, Total=3540 [2022-01-31 10:16:40,246 INFO L933 BasicCegarLoop]: 30 mSDtfsCounter, 23 mSDsluCounter, 335 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 365 SdHoareTripleChecker+Invalid, 383 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 325 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 10:16:40,247 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [23 Valid, 365 Invalid, 383 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 44 Invalid, 0 Unknown, 325 Unchecked, 0.1s Time] [2022-01-31 10:16:40,247 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2022-01-31 10:16:40,249 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 95. [2022-01-31 10:16:40,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 95 states, 82 states have (on average 1.1829268292682926) internal successors, (97), 82 states have internal predecessors, (97), 8 states have call successors, (8), 6 states have call predecessors, (8), 4 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-01-31 10:16:40,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 111 transitions. [2022-01-31 10:16:40,249 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 111 transitions. Word has length 63 [2022-01-31 10:16:40,249 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 10:16:40,249 INFO L470 AbstractCegarLoop]: Abstraction has 95 states and 111 transitions. [2022-01-31 10:16:40,249 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 36 states have (on average 1.4722222222222223) internal successors, (53), 35 states have internal predecessors, (53), 4 states have call successors, (6), 4 states have call predecessors, (6), 4 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) [2022-01-31 10:16:40,250 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 111 transitions. [2022-01-31 10:16:40,250 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-01-31 10:16:40,250 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 10:16:40,250 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 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] [2022-01-31 10:16:40,255 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2022-01-31 10:16:40,455 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2022-01-31 10:16:40,455 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 10:16:40,455 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 10:16:40,455 INFO L85 PathProgramCache]: Analyzing trace with hash 1114151319, now seen corresponding path program 1 times [2022-01-31 10:16:40,455 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-31 10:16:40,456 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1756019530] [2022-01-31 10:16:40,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 10:16:40,456 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 10:16:40,462 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-01-31 10:16:40,462 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [569689463] [2022-01-31 10:16:40,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 10:16:40,463 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-31 10:16:40,463 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-31 10:16:40,465 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-31 10:16:40,465 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-01-31 10:16:40,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 10:16:40,519 INFO L263 TraceCheckSpWp]: Trace formula consists of 220 conjuncts, 3 conjunts are in the unsatisfiable core [2022-01-31 10:16:40,520 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-31 10:16:40,581 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2022-01-31 10:16:40,581 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-31 10:16:40,581 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-31 10:16:40,581 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1756019530] [2022-01-31 10:16:40,582 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-01-31 10:16:40,582 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [569689463] [2022-01-31 10:16:40,582 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [569689463] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 10:16:40,582 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 10:16:40,582 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-31 10:16:40,582 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1305306008] [2022-01-31 10:16:40,582 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 10:16:40,582 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-31 10:16:40,582 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-31 10:16:40,582 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-31 10:16:40,583 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-31 10:16:40,583 INFO L87 Difference]: Start difference. First operand 95 states and 111 transitions. Second operand has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2022-01-31 10:16:40,598 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 10:16:40,598 INFO L93 Difference]: Finished difference Result 115 states and 134 transitions. [2022-01-31 10:16:40,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-31 10:16:40,598 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 63 [2022-01-31 10:16:40,598 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 10:16:40,599 INFO L225 Difference]: With dead ends: 115 [2022-01-31 10:16:40,599 INFO L226 Difference]: Without dead ends: 115 [2022-01-31 10:16:40,600 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 61 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 10:16:40,600 INFO L933 BasicCegarLoop]: 50 mSDtfsCounter, 11 mSDsluCounter, 34 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 84 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-31 10:16:40,600 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [11 Valid, 84 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-31 10:16:40,600 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2022-01-31 10:16:40,602 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 95. [2022-01-31 10:16:40,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 95 states, 82 states have (on average 1.170731707317073) internal successors, (96), 82 states have internal predecessors, (96), 8 states have call successors, (8), 6 states have call predecessors, (8), 4 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-01-31 10:16:40,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 110 transitions. [2022-01-31 10:16:40,603 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 110 transitions. Word has length 63 [2022-01-31 10:16:40,603 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 10:16:40,603 INFO L470 AbstractCegarLoop]: Abstraction has 95 states and 110 transitions. [2022-01-31 10:16:40,603 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2022-01-31 10:16:40,603 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 110 transitions. [2022-01-31 10:16:40,603 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-01-31 10:16:40,603 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 10:16:40,604 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 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] [2022-01-31 10:16:40,620 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2022-01-31 10:16:40,804 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2022-01-31 10:16:40,804 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 10:16:40,804 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 10:16:40,804 INFO L85 PathProgramCache]: Analyzing trace with hash -1936051496, now seen corresponding path program 4 times [2022-01-31 10:16:40,804 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-31 10:16:40,805 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1453221273] [2022-01-31 10:16:40,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 10:16:40,805 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 10:16:40,811 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-01-31 10:16:40,811 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [84388479] [2022-01-31 10:16:40,811 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-31 10:16:40,811 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-31 10:16:40,811 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-31 10:16:40,813 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-31 10:16:40,814 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-01-31 10:16:41,601 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-31 10:16:41,601 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-31 10:16:41,603 INFO L263 TraceCheckSpWp]: Trace formula consists of 221 conjuncts, 75 conjunts are in the unsatisfiable core [2022-01-31 10:16:41,606 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-31 10:16:41,650 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 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 61 treesize of output 56 [2022-01-31 10:16:41,653 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 21 treesize of output 20 [2022-01-31 10:16:41,664 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 19 treesize of output 18 [2022-01-31 10:16:41,730 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 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 80 treesize of output 73 [2022-01-31 10:16:41,748 INFO L353 Elim1Store]: treesize reduction 148, result has 19.1 percent of original size [2022-01-31 10:16:41,748 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 2 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 72 treesize of output 96 [2022-01-31 10:16:41,759 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:16:41,759 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 7 [2022-01-31 10:16:41,958 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 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 96 treesize of output 87 [2022-01-31 10:16:41,961 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:16:41,963 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:16:41,964 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:16:41,965 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:16:41,966 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:16:41,967 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:16:41,967 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 2 stores, 2 select indices, 2 select index equivalence classes, 6 disjoint index pairs (out of 1 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 86 treesize of output 127 [2022-01-31 10:16:41,985 WARN L234 Elim1Store]: Array PQE input equivalent to false [2022-01-31 10:16:42,003 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:16:42,004 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:16:42,005 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:16:42,005 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 79 treesize of output 27 [2022-01-31 10:16:42,125 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 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 80 treesize of output 69 [2022-01-31 10:16:42,128 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:16:42,129 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:16:42,130 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:16:42,130 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:16:42,131 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:16:42,132 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:16:42,133 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:16:42,134 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:16:42,134 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:16:42,135 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:16:42,136 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 2 stores, 3 select indices, 3 select index equivalence classes, 10 disjoint index pairs (out of 3 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 68 treesize of output 104 [2022-01-31 10:16:42,154 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:16:42,156 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:16:42,156 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:16:42,157 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:16:42,158 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:16:42,159 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:16:42,159 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 61 treesize of output 30 [2022-01-31 10:16:42,682 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 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 134 treesize of output 117 [2022-01-31 10:16:42,686 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:16:42,687 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:16:42,688 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:16:42,689 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:16:42,690 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:16:42,690 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:16:42,893 INFO L353 Elim1Store]: treesize reduction 479, result has 25.7 percent of original size [2022-01-31 10:16:42,893 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 2 stores, 5 select indices, 5 select index equivalence classes, 6 disjoint index pairs (out of 10 index pairs), introduced 7 new quantified variables, introduced 13 case distinctions, treesize of input 116 treesize of output 236 [2022-01-31 10:16:42,911 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:16:42,912 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:16:42,914 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:16:42,915 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:16:42,916 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:16:42,917 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:16:42,964 INFO L353 Elim1Store]: treesize reduction 127, result has 43.0 percent of original size [2022-01-31 10:16:42,964 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 6 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 9 case distinctions, treesize of input 198 treesize of output 242 [2022-01-31 10:16:43,182 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 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 300 treesize of output 279 [2022-01-31 10:16:43,187 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:16:43,188 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:16:43,188 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:16:43,189 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:16:43,190 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:16:43,191 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:16:43,779 INFO L353 Elim1Store]: treesize reduction 1489, result has 35.0 percent of original size [2022-01-31 10:16:43,780 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 4 stores, 6 select indices, 6 select index equivalence classes, 6 disjoint index pairs (out of 15 index pairs), introduced 10 new quantified variables, introduced 31 case distinctions, treesize of input 282 treesize of output 1026 [2022-01-31 10:16:43,918 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:16:43,920 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:16:43,922 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:16:43,924 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:16:43,926 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:16:43,928 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:16:43,930 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:16:43,932 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:16:43,933 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:16:43,935 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:16:43,937 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 10 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 116 treesize of output 60 [2022-01-31 10:16:44,064 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:16:44,067 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:16:44,069 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:16:44,072 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:16:44,076 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:16:44,078 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:16:44,080 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:16:44,084 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:16:44,141 INFO L353 Elim1Store]: treesize reduction 122, result has 42.5 percent of original size [2022-01-31 10:16:44,141 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 8 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 7 case distinctions, treesize of input 153 treesize of output 177 [2022-01-31 10:16:44,529 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:16:44,530 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:16:44,531 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:16:44,532 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:16:44,534 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:16:44,535 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:16:44,537 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:16:44,539 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:16:44,540 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:16:44,542 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:16:44,544 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 10 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 146 treesize of output 85 [2022-01-31 10:16:44,785 WARN L234 Elim1Store]: Array PQE input equivalent to false [2022-01-31 10:16:44,989 WARN L234 Elim1Store]: Array PQE input equivalent to false [2022-01-31 10:16:45,058 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:16:45,060 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:16:45,063 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:16:45,065 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:16:45,066 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:16:45,070 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:16:45,072 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:16:45,074 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:16:45,076 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:16:45,078 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:16:45,082 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 10 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 148 treesize of output 85 [2022-01-31 10:16:45,725 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:16:45,728 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:16:45,729 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:16:45,732 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:16:45,736 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:16:45,738 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:16:45,741 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:16:45,798 INFO L353 Elim1Store]: treesize reduction 136, result has 44.9 percent of original size [2022-01-31 10:16:45,798 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 7 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 8 case distinctions, treesize of input 408 treesize of output 409 [2022-01-31 10:16:46,232 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:16:46,238 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:16:46,239 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:16:46,242 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:16:46,251 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:16:46,252 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:16:46,254 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:16:46,261 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:16:46,340 INFO L353 Elim1Store]: treesize reduction 242, result has 43.7 percent of original size [2022-01-31 10:16:46,341 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 7 select indices, 7 select index equivalence classes, 8 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 13 case distinctions, treesize of input 808 treesize of output 766 [2022-01-31 10:16:46,802 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:16:46,803 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:16:46,803 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:16:46,804 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:16:46,805 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:16:46,805 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:16:46,884 INFO L353 Elim1Store]: treesize reduction 341, result has 33.7 percent of original size [2022-01-31 10:16:46,885 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 7 select indices, 7 select index equivalence classes, 6 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 15 case distinctions, treesize of input 580 treesize of output 557 [2022-01-31 10:16:48,525 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:16:48,526 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:16:48,527 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:16:48,528 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:16:48,528 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:16:48,529 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:16:48,530 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:16:48,531 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:16:48,532 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:16:48,533 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-31 10:16:48,533 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 10 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 79 treesize of output 33 [2022-01-31 10:16:48,600 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 8 proven. 50 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-01-31 10:16:48,600 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-31 10:17:17,249 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 56 treesize of output 52 [2022-01-31 10:17:17,393 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-31 10:17:17,393 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 2 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 52 treesize of output 59 [2022-01-31 10:17:17,405 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 19 treesize of output 4 [2022-01-31 10:17:17,714 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 17 treesize of output 4 [2022-01-31 10:17:19,004 INFO L353 Elim1Store]: treesize reduction 260, result has 56.4 percent of original size [2022-01-31 10:17:19,005 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 778153 treesize of output 730332 [2022-01-31 10:17:20,197 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-31 10:17:20,197 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1453221273] [2022-01-31 10:17:20,197 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-01-31 10:17:20,197 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [84388479] [2022-01-31 10:17:20,197 WARN L320 FreeRefinementEngine]: Global settings require throwing the following exception [2022-01-31 10:17:20,215 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2022-01-31 10:17:20,412 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-31 10:17:20,413 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.ArithmeticException: BigInteger out of long range at java.base/java.math.BigInteger.longValueExact(BigInteger.java:4765) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.computeDerApplicabilityScore(QuantifierPusher.java:685) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.selectBestEliminatee(QuantifierPusher.java:668) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.doit(QuantifierPusher.java:604) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.tryToPushOverDualFiniteConnective2(QuantifierPusher.java:446) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.tryToPushOverDualFiniteConnective(QuantifierPusher.java:355) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.QuantifierPushTermWalker.convert(QuantifierPushTermWalker.java:172) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.QuantifierPushTermWalker.convert(QuantifierPushTermWalker.java:1) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:65) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:61) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.QuantifierPushTermWalker.eliminate(QuantifierPushTermWalker.java:261) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.doit(QuantifierPusher.java:635) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.tryToPushOverDualFiniteConnective2(QuantifierPusher.java:446) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.tryToPushOverDualFiniteConnective(QuantifierPusher.java:355) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.QuantifierPushTermWalker.convert(QuantifierPushTermWalker.java:172) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.QuantifierPushTermWalker.convert(QuantifierPushTermWalker.java:1) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:65) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:61) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.QuantifierPushTermWalker.eliminate(QuantifierPushTermWalker.java:261) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.QuantifierPushTermWalker.eliminate(QuantifierPushTermWalker.java:247) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.PartialQuantifierElimination.eliminate(PartialQuantifierElimination.java:92) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer$QuantifierEliminationPostprocessor.postprocess(IterativePredicateTransformer.java:238) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer.applyPostprocessors(IterativePredicateTransformer.java:420) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer.computeBackwardSequence(IterativePredicateTransformer.java:399) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer.computeWeakestPreconditionSequence(IterativePredicateTransformer.java:271) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.computeInterpolantsUsingUnsatCore(TraceCheckSpWp.java:342) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.computeInterpolants(TraceCheckSpWp.java:185) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.(TraceCheckSpWp.java:163) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:108) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:1) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:100) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.isCorrect(IpTcStrategyModuleBase.java:56) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.checkFeasibility(AutomatonFreeRefinementEngine.java:211) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:124) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:88) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:76) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:610) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:413) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:330) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopUtils.getCegarLoopResult(CegarLoopUtils.java:56) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:414) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:304) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:264) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:177) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:156) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:123) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2022-01-31 10:17:20,416 INFO L158 Benchmark]: Toolchain (without parser) took 386994.08ms. Allocated memory was 169.9MB in the beginning and 237.0MB in the end (delta: 67.1MB). Free memory was 116.2MB in the beginning and 167.9MB in the end (delta: -51.8MB). Peak memory consumption was 124.4MB. Max. memory is 8.0GB. [2022-01-31 10:17:20,416 INFO L158 Benchmark]: CDTParser took 0.09ms. Allocated memory is still 169.9MB. Free memory is still 132.9MB. There was no memory consumed. Max. memory is 8.0GB. [2022-01-31 10:17:20,417 INFO L158 Benchmark]: CACSL2BoogieTranslator took 179.64ms. Allocated memory is still 169.9MB. Free memory was 116.0MB in the beginning and 141.8MB in the end (delta: -25.8MB). Peak memory consumption was 12.1MB. Max. memory is 8.0GB. [2022-01-31 10:17:20,417 INFO L158 Benchmark]: Boogie Preprocessor took 27.44ms. Allocated memory is still 169.9MB. Free memory was 141.8MB in the beginning and 140.2MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-01-31 10:17:20,417 INFO L158 Benchmark]: RCFGBuilder took 261.72ms. Allocated memory is still 169.9MB. Free memory was 140.2MB in the beginning and 127.1MB in the end (delta: 13.1MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. [2022-01-31 10:17:20,417 INFO L158 Benchmark]: IcfgTransformer took 32.57ms. Allocated memory is still 169.9MB. Free memory was 127.1MB in the beginning and 125.5MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-01-31 10:17:20,418 INFO L158 Benchmark]: TraceAbstraction took 386489.14ms. Allocated memory was 169.9MB in the beginning and 237.0MB in the end (delta: 67.1MB). Free memory was 125.0MB in the beginning and 167.9MB in the end (delta: -42.9MB). Peak memory consumption was 133.3MB. Max. memory is 8.0GB. [2022-01-31 10:17:20,419 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.09ms. Allocated memory is still 169.9MB. Free memory is still 132.9MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 179.64ms. Allocated memory is still 169.9MB. Free memory was 116.0MB in the beginning and 141.8MB in the end (delta: -25.8MB). Peak memory consumption was 12.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 27.44ms. Allocated memory is still 169.9MB. Free memory was 141.8MB in the beginning and 140.2MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 261.72ms. Allocated memory is still 169.9MB. Free memory was 140.2MB in the beginning and 127.1MB in the end (delta: 13.1MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. * IcfgTransformer took 32.57ms. Allocated memory is still 169.9MB. Free memory was 127.1MB in the beginning and 125.5MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * TraceAbstraction took 386489.14ms. Allocated memory was 169.9MB in the beginning and 237.0MB in the end (delta: 67.1MB). Free memory was 125.0MB in the beginning and 167.9MB in the end (delta: -42.9MB). Peak memory consumption was 133.3MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: ArithmeticException: BigInteger out of long range de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: ArithmeticException: BigInteger out of long range: java.base/java.math.BigInteger.longValueExact(BigInteger.java:4765) RESULT: Ultimate could not prove your program: Toolchain returned no result. [2022-01-31 10:17:20,639 WARN L435 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forcibly destroying the process [2022-01-31 10:17:20,681 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 137 Received shutdown request...