/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data --core.log.level.for.class de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN -tc ../../../trunk/examples/toolchains/AutomizerCTransformed.xml -s ../../../trunk/examples/settings/automizer/LoopAccelerationJordanC.epf -i ../../../trunk/examples/svcomp/nla-digbench-scaling/egcd-ll_unwindbound2.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-b030c9e [2022-03-20 05:32:13,822 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-03-20 05:32:13,823 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-03-20 05:32:13,845 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-03-20 05:32:13,846 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-03-20 05:32:13,847 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-03-20 05:32:13,848 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-03-20 05:32:13,849 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-03-20 05:32:13,850 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-03-20 05:32:13,851 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-03-20 05:32:13,856 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-03-20 05:32:13,857 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-03-20 05:32:13,857 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-03-20 05:32:13,858 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-03-20 05:32:13,859 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-03-20 05:32:13,859 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-03-20 05:32:13,860 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-03-20 05:32:13,860 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-03-20 05:32:13,862 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-03-20 05:32:13,863 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-03-20 05:32:13,864 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-03-20 05:32:13,869 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-03-20 05:32:13,870 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-03-20 05:32:13,870 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-03-20 05:32:13,877 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-03-20 05:32:13,879 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-03-20 05:32:13,888 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-03-20 05:32:13,889 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-03-20 05:32:13,892 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-03-20 05:32:13,893 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/LoopAccelerationJordanC.epf [2022-03-20 05:32:13,899 INFO L113 SettingsManager]: Loading preferences was successful [2022-03-20 05:32:13,899 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-03-20 05:32:13,900 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-03-20 05:32:13,901 INFO L138 SettingsManager]: * sizeof long=4 [2022-03-20 05:32:13,901 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-03-20 05:32:13,901 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-03-20 05:32:13,901 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-03-20 05:32:13,901 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-03-20 05:32:13,901 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-03-20 05:32:13,901 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-03-20 05:32:13,901 INFO L138 SettingsManager]: * sizeof long double=12 [2022-03-20 05:32:13,901 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-03-20 05:32:13,901 INFO L138 SettingsManager]: * Use constant arrays=true [2022-03-20 05:32:13,902 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-03-20 05:32:13,902 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-03-20 05:32:13,902 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-03-20 05:32:13,902 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-03-20 05:32:13,902 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-03-20 05:32:13,902 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-03-20 05:32:13,902 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-03-20 05:32:13,902 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-03-20 05:32:13,903 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-03-20 05:32:13,903 INFO L138 SettingsManager]: * TransformationType=LOOP_ACCELERATION_JORDAN WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-03-20 05:32:14,082 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-03-20 05:32:14,107 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-03-20 05:32:14,109 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-03-20 05:32:14,109 INFO L271 PluginConnector]: Initializing CDTParser... [2022-03-20 05:32:14,110 INFO L275 PluginConnector]: CDTParser initialized [2022-03-20 05:32:14,111 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/nla-digbench-scaling/egcd-ll_unwindbound2.c [2022-03-20 05:32:14,163 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/63edded17/184df3bf821043e4a56601ebbe751991/FLAG560c32601 [2022-03-20 05:32:14,498 INFO L306 CDTParser]: Found 1 translation units. [2022-03-20 05:32:14,498 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench-scaling/egcd-ll_unwindbound2.c [2022-03-20 05:32:14,502 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/63edded17/184df3bf821043e4a56601ebbe751991/FLAG560c32601 [2022-03-20 05:32:14,936 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/63edded17/184df3bf821043e4a56601ebbe751991 [2022-03-20 05:32:14,938 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-03-20 05:32:14,939 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-03-20 05:32:14,941 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-03-20 05:32:14,942 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-03-20 05:32:14,945 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-03-20 05:32:14,945 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.03 05:32:14" (1/1) ... [2022-03-20 05:32:14,946 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4aee2a32 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 05:32:14, skipping insertion in model container [2022-03-20 05:32:14,946 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.03 05:32:14" (1/1) ... [2022-03-20 05:32:14,951 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-03-20 05:32:14,964 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-03-20 05:32:15,096 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench-scaling/egcd-ll_unwindbound2.c[489,502] [2022-03-20 05:32:15,117 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-03-20 05:32:15,127 INFO L203 MainTranslator]: Completed pre-run [2022-03-20 05:32:15,135 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench-scaling/egcd-ll_unwindbound2.c[489,502] [2022-03-20 05:32:15,143 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-03-20 05:32:15,155 INFO L208 MainTranslator]: Completed translation [2022-03-20 05:32:15,156 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 05:32:15 WrapperNode [2022-03-20 05:32:15,156 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-03-20 05:32:15,157 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-03-20 05:32:15,157 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-03-20 05:32:15,157 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-03-20 05:32:15,166 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 05:32:15" (1/1) ... [2022-03-20 05:32:15,166 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 05:32:15" (1/1) ... [2022-03-20 05:32:15,171 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 05:32:15" (1/1) ... [2022-03-20 05:32:15,171 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 05:32:15" (1/1) ... [2022-03-20 05:32:15,175 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 05:32:15" (1/1) ... [2022-03-20 05:32:15,177 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 05:32:15" (1/1) ... [2022-03-20 05:32:15,178 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 05:32:15" (1/1) ... [2022-03-20 05:32:15,179 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-03-20 05:32:15,180 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-03-20 05:32:15,180 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-03-20 05:32:15,180 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-03-20 05:32:15,181 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 05:32:15" (1/1) ... [2022-03-20 05:32:15,186 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-03-20 05:32:15,193 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-20 05:32:15,202 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-03-20 05:32:15,204 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-03-20 05:32:15,229 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2022-03-20 05:32:15,230 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-03-20 05:32:15,230 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2022-03-20 05:32:15,230 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-03-20 05:32:15,230 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-03-20 05:32:15,231 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2022-03-20 05:32:15,231 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2022-03-20 05:32:15,231 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2022-03-20 05:32:15,231 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2022-03-20 05:32:15,231 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-03-20 05:32:15,231 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2022-03-20 05:32:15,232 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-03-20 05:32:15,232 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-03-20 05:32:15,232 INFO L130 BoogieDeclarations]: Found specification of procedure main [2022-03-20 05:32:15,233 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2022-03-20 05:32:15,234 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-03-20 05:32:15,234 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-03-20 05:32:15,234 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-03-20 05:32:15,234 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-03-20 05:32:15,234 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-03-20 05:32:15,277 INFO L234 CfgBuilder]: Building ICFG [2022-03-20 05:32:15,279 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-03-20 05:32:15,396 INFO L275 CfgBuilder]: Performing block encoding [2022-03-20 05:32:15,401 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-03-20 05:32:15,401 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-03-20 05:32:15,402 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.03 05:32:15 BoogieIcfgContainer [2022-03-20 05:32:15,402 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-03-20 05:32:15,403 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-03-20 05:32:15,403 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-03-20 05:32:15,404 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-03-20 05:32:15,406 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.03 05:32:15" (1/1) ... [2022-03-20 05:32:15,407 INFO L168 ansformationObserver]: Applying ICFG transformation LOOP_ACCELERATION_JORDAN [2022-03-20 05:32:15,422 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 20.03 05:32:15 BasicIcfg [2022-03-20 05:32:15,422 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-03-20 05:32:15,423 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-03-20 05:32:15,423 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-03-20 05:32:15,426 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-03-20 05:32:15,426 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.03 05:32:14" (1/4) ... [2022-03-20 05:32:15,426 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@116c04f1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.03 05:32:15, skipping insertion in model container [2022-03-20 05:32:15,426 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 05:32:15" (2/4) ... [2022-03-20 05:32:15,427 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@116c04f1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.03 05:32:15, skipping insertion in model container [2022-03-20 05:32:15,427 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.03 05:32:15" (3/4) ... [2022-03-20 05:32:15,427 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@116c04f1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.03 05:32:15, skipping insertion in model container [2022-03-20 05:32:15,427 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 20.03 05:32:15" (4/4) ... [2022-03-20 05:32:15,428 INFO L111 eAbstractionObserver]: Analyzing ICFG egcd-ll_unwindbound2.cJordan [2022-03-20 05:32:15,431 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:ForwardPredicates Determinization: PREDICATE_ABSTRACTION [2022-03-20 05:32:15,431 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-03-20 05:32:15,462 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-03-20 05:32:15,468 INFO L340 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=ForwardPredicates, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP [2022-03-20 05:32:15,468 INFO L341 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-03-20 05:32:15,477 INFO L276 IsEmpty]: Start isEmpty. Operand has 35 states, 18 states have (on average 1.3888888888888888) internal successors, (25), 19 states have internal predecessors, (25), 11 states have call successors, (11), 4 states have call predecessors, (11), 4 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2022-03-20 05:32:15,482 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-03-20 05:32:15,483 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 05:32:15,483 INFO L499 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 05:32:15,484 INFO L403 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 05:32:15,487 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 05:32:15,487 INFO L85 PathProgramCache]: Analyzing trace with hash 2051628946, now seen corresponding path program 1 times [2022-03-20 05:32:15,494 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 05:32:15,495 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [320451195] [2022-03-20 05:32:15,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 05:32:15,496 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 05:32:15,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 05:32:15,712 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 05:32:15,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 05:32:15,721 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-20 05:32:15,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 05:32:15,726 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-03-20 05:32:15,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 05:32:15,732 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-03-20 05:32:15,732 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 05:32:15,732 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [320451195] [2022-03-20 05:32:15,733 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [320451195] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 05:32:15,733 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 05:32:15,733 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-03-20 05:32:15,734 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [640828445] [2022-03-20 05:32:15,735 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 05:32:15,739 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-03-20 05:32:15,739 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-20 05:32:15,767 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-03-20 05:32:15,768 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-03-20 05:32:15,770 INFO L87 Difference]: Start difference. First operand has 35 states, 18 states have (on average 1.3888888888888888) internal successors, (25), 19 states have internal predecessors, (25), 11 states have call successors, (11), 4 states have call predecessors, (11), 4 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) Second operand has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 2 states have internal predecessors, (11), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-03-20 05:32:15,860 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 05:32:15,861 INFO L93 Difference]: Finished difference Result 36 states and 45 transitions. [2022-03-20 05:32:15,862 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-03-20 05:32:15,863 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 2 states have internal predecessors, (11), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 22 [2022-03-20 05:32:15,863 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 05:32:15,876 INFO L225 Difference]: With dead ends: 36 [2022-03-20 05:32:15,876 INFO L226 Difference]: Without dead ends: 31 [2022-03-20 05:32:15,878 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-03-20 05:32:15,885 INFO L913 BasicCegarLoop]: 41 mSDtfsCounter, 10 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 45 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-20 05:32:15,886 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [12 Valid, 45 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-20 05:32:15,898 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2022-03-20 05:32:15,919 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 30. [2022-03-20 05:32:15,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 15 states have (on average 1.2666666666666666) internal successors, (19), 16 states have internal predecessors, (19), 11 states have call successors, (11), 4 states have call predecessors, (11), 3 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2022-03-20 05:32:15,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 39 transitions. [2022-03-20 05:32:15,924 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 39 transitions. Word has length 22 [2022-03-20 05:32:15,925 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 05:32:15,925 INFO L478 AbstractCegarLoop]: Abstraction has 30 states and 39 transitions. [2022-03-20 05:32:15,925 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 2 states have internal predecessors, (11), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-03-20 05:32:15,925 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 39 transitions. [2022-03-20 05:32:15,926 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-03-20 05:32:15,926 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 05:32:15,926 INFO L499 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 05:32:15,926 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-03-20 05:32:15,927 INFO L403 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 05:32:15,927 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 05:32:15,927 INFO L85 PathProgramCache]: Analyzing trace with hash -794581502, now seen corresponding path program 1 times [2022-03-20 05:32:15,928 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 05:32:15,928 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1078542703] [2022-03-20 05:32:15,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 05:32:15,928 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 05:32:15,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 05:32:16,017 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 05:32:16,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 05:32:16,049 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-20 05:32:16,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 05:32:16,059 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-03-20 05:32:16,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 05:32:16,068 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-03-20 05:32:16,068 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 05:32:16,069 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1078542703] [2022-03-20 05:32:16,069 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1078542703] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 05:32:16,069 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 05:32:16,069 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-03-20 05:32:16,069 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [71941115] [2022-03-20 05:32:16,070 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 05:32:16,071 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-03-20 05:32:16,071 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-20 05:32:16,072 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-03-20 05:32:16,072 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-03-20 05:32:16,073 INFO L87 Difference]: Start difference. First operand 30 states and 39 transitions. Second operand has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 3 states have call successors, (5), 4 states have call predecessors, (5), 2 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) [2022-03-20 05:32:16,184 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 05:32:16,184 INFO L93 Difference]: Finished difference Result 32 states and 41 transitions. [2022-03-20 05:32:16,185 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-03-20 05:32:16,185 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 3 states have call successors, (5), 4 states have call predecessors, (5), 2 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) Word has length 23 [2022-03-20 05:32:16,185 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 05:32:16,187 INFO L225 Difference]: With dead ends: 32 [2022-03-20 05:32:16,187 INFO L226 Difference]: Without dead ends: 32 [2022-03-20 05:32:16,188 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-03-20 05:32:16,189 INFO L913 BasicCegarLoop]: 35 mSDtfsCounter, 13 mSDsluCounter, 30 mSDsCounter, 0 mSdLazyCounter, 55 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 65 SdHoareTripleChecker+Invalid, 69 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 55 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-20 05:32:16,189 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [13 Valid, 65 Invalid, 69 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 55 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-20 05:32:16,190 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2022-03-20 05:32:16,193 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32. [2022-03-20 05:32:16,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 17 states have (on average 1.2352941176470589) internal successors, (21), 18 states have internal predecessors, (21), 11 states have call successors, (11), 4 states have call predecessors, (11), 3 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2022-03-20 05:32:16,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 41 transitions. [2022-03-20 05:32:16,194 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 41 transitions. Word has length 23 [2022-03-20 05:32:16,198 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 05:32:16,198 INFO L478 AbstractCegarLoop]: Abstraction has 32 states and 41 transitions. [2022-03-20 05:32:16,199 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 3 states have call successors, (5), 4 states have call predecessors, (5), 2 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) [2022-03-20 05:32:16,199 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 41 transitions. [2022-03-20 05:32:16,199 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-03-20 05:32:16,199 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 05:32:16,199 INFO L499 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 05:32:16,200 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-03-20 05:32:16,200 INFO L403 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 05:32:16,200 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 05:32:16,200 INFO L85 PathProgramCache]: Analyzing trace with hash -793509026, now seen corresponding path program 1 times [2022-03-20 05:32:16,200 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 05:32:16,200 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1292507023] [2022-03-20 05:32:16,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 05:32:16,201 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 05:32:16,210 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-03-20 05:32:16,211 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1621848292] [2022-03-20 05:32:16,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 05:32:16,211 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-20 05:32:16,211 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-20 05:32:16,213 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-20 05:32:16,214 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-03-20 05:32:16,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 05:32:16,265 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 9 conjunts are in the unsatisfiable core [2022-03-20 05:32:16,269 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-20 05:32:16,396 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-03-20 05:32:16,397 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-03-20 05:32:16,397 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 05:32:16,397 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1292507023] [2022-03-20 05:32:16,397 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-03-20 05:32:16,397 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1621848292] [2022-03-20 05:32:16,397 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1621848292] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 05:32:16,398 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 05:32:16,398 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-03-20 05:32:16,398 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [544141334] [2022-03-20 05:32:16,398 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 05:32:16,398 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-03-20 05:32:16,398 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-20 05:32:16,399 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-03-20 05:32:16,399 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-03-20 05:32:16,399 INFO L87 Difference]: Start difference. First operand 32 states and 41 transitions. Second operand has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-03-20 05:32:16,440 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 05:32:16,440 INFO L93 Difference]: Finished difference Result 47 states and 64 transitions. [2022-03-20 05:32:16,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-03-20 05:32:16,440 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 23 [2022-03-20 05:32:16,441 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 05:32:16,441 INFO L225 Difference]: With dead ends: 47 [2022-03-20 05:32:16,441 INFO L226 Difference]: Without dead ends: 47 [2022-03-20 05:32:16,442 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-03-20 05:32:16,442 INFO L913 BasicCegarLoop]: 43 mSDtfsCounter, 8 mSDsluCounter, 112 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 155 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-20 05:32:16,443 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [14 Valid, 155 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-20 05:32:16,443 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2022-03-20 05:32:16,448 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 46. [2022-03-20 05:32:16,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46 states, 24 states have (on average 1.2916666666666667) internal successors, (31), 26 states have internal predecessors, (31), 17 states have call successors, (17), 5 states have call predecessors, (17), 4 states have return successors, (15), 14 states have call predecessors, (15), 15 states have call successors, (15) [2022-03-20 05:32:16,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 63 transitions. [2022-03-20 05:32:16,450 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 63 transitions. Word has length 23 [2022-03-20 05:32:16,450 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 05:32:16,451 INFO L478 AbstractCegarLoop]: Abstraction has 46 states and 63 transitions. [2022-03-20 05:32:16,451 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-03-20 05:32:16,451 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 63 transitions. [2022-03-20 05:32:16,451 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-03-20 05:32:16,451 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 05:32:16,452 INFO L499 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 05:32:16,469 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-03-20 05:32:16,659 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-20 05:32:16,661 INFO L403 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 05:32:16,662 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 05:32:16,662 INFO L85 PathProgramCache]: Analyzing trace with hash 2115229340, now seen corresponding path program 1 times [2022-03-20 05:32:16,662 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 05:32:16,662 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1285037316] [2022-03-20 05:32:16,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 05:32:16,662 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 05:32:16,672 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-03-20 05:32:16,672 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [714332501] [2022-03-20 05:32:16,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 05:32:16,672 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-20 05:32:16,673 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-20 05:32:16,674 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-20 05:32:16,675 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-03-20 05:32:16,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 05:32:16,711 INFO L263 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 14 conjunts are in the unsatisfiable core [2022-03-20 05:32:16,713 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-20 05:32:16,859 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-20 05:32:16,860 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-20 05:32:16,939 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 05:32:16,939 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1285037316] [2022-03-20 05:32:16,939 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-03-20 05:32:16,939 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [714332501] [2022-03-20 05:32:16,939 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [714332501] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-20 05:32:16,940 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-03-20 05:32:16,940 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2022-03-20 05:32:16,940 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [303750253] [2022-03-20 05:32:16,940 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-03-20 05:32:16,940 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-03-20 05:32:16,940 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-20 05:32:16,941 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-03-20 05:32:16,941 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2022-03-20 05:32:16,941 INFO L87 Difference]: Start difference. First operand 46 states and 63 transitions. Second operand has 8 states, 8 states have (on average 2.25) internal successors, (18), 6 states have internal predecessors, (18), 3 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2022-03-20 05:32:17,029 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 05:32:17,029 INFO L93 Difference]: Finished difference Result 51 states and 67 transitions. [2022-03-20 05:32:17,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-03-20 05:32:17,030 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.25) internal successors, (18), 6 states have internal predecessors, (18), 3 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) Word has length 28 [2022-03-20 05:32:17,030 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 05:32:17,031 INFO L225 Difference]: With dead ends: 51 [2022-03-20 05:32:17,031 INFO L226 Difference]: Without dead ends: 51 [2022-03-20 05:32:17,031 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 24 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2022-03-20 05:32:17,048 INFO L913 BasicCegarLoop]: 41 mSDtfsCounter, 24 mSDsluCounter, 168 mSDsCounter, 0 mSdLazyCounter, 84 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 209 SdHoareTripleChecker+Invalid, 91 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 84 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-20 05:32:17,048 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [35 Valid, 209 Invalid, 91 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 84 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-20 05:32:17,049 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2022-03-20 05:32:17,053 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 50. [2022-03-20 05:32:17,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50 states, 27 states have (on average 1.2592592592592593) internal successors, (34), 29 states have internal predecessors, (34), 17 states have call successors, (17), 6 states have call predecessors, (17), 5 states have return successors, (15), 14 states have call predecessors, (15), 15 states have call successors, (15) [2022-03-20 05:32:17,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 66 transitions. [2022-03-20 05:32:17,054 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 66 transitions. Word has length 28 [2022-03-20 05:32:17,054 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 05:32:17,054 INFO L478 AbstractCegarLoop]: Abstraction has 50 states and 66 transitions. [2022-03-20 05:32:17,055 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.25) internal successors, (18), 6 states have internal predecessors, (18), 3 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2022-03-20 05:32:17,055 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 66 transitions. [2022-03-20 05:32:17,055 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-03-20 05:32:17,055 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 05:32:17,055 INFO L499 BasicCegarLoop]: trace histogram [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] [2022-03-20 05:32:17,073 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-03-20 05:32:17,256 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2022-03-20 05:32:17,256 INFO L403 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 05:32:17,257 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 05:32:17,257 INFO L85 PathProgramCache]: Analyzing trace with hash -864241798, now seen corresponding path program 1 times [2022-03-20 05:32:17,257 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 05:32:17,257 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1058494639] [2022-03-20 05:32:17,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 05:32:17,257 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 05:32:17,268 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-03-20 05:32:17,268 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1383401963] [2022-03-20 05:32:17,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 05:32:17,269 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-20 05:32:17,269 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-20 05:32:17,270 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-20 05:32:17,271 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-03-20 05:32:17,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 05:32:17,308 INFO L263 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 14 conjunts are in the unsatisfiable core [2022-03-20 05:32:17,310 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-20 05:32:17,444 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 3 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-03-20 05:32:17,444 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-20 05:32:17,529 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-03-20 05:32:17,530 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 05:32:17,530 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1058494639] [2022-03-20 05:32:17,530 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-03-20 05:32:17,530 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1383401963] [2022-03-20 05:32:17,530 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1383401963] provided 1 perfect and 1 imperfect interpolant sequences [2022-03-20 05:32:17,530 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-03-20 05:32:17,530 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [8] total 9 [2022-03-20 05:32:17,531 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1463916385] [2022-03-20 05:32:17,531 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 05:32:17,531 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-03-20 05:32:17,531 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-20 05:32:17,531 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-03-20 05:32:17,532 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2022-03-20 05:32:17,532 INFO L87 Difference]: Start difference. First operand 50 states and 66 transitions. Second operand has 5 states, 5 states have (on average 3.0) internal successors, (15), 4 states have internal predecessors, (15), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-03-20 05:32:17,577 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 05:32:17,577 INFO L93 Difference]: Finished difference Result 73 states and 105 transitions. [2022-03-20 05:32:17,577 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-03-20 05:32:17,577 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 4 states have internal predecessors, (15), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 33 [2022-03-20 05:32:17,578 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 05:32:17,580 INFO L225 Difference]: With dead ends: 73 [2022-03-20 05:32:17,580 INFO L226 Difference]: Without dead ends: 71 [2022-03-20 05:32:17,581 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 57 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2022-03-20 05:32:17,583 INFO L913 BasicCegarLoop]: 41 mSDtfsCounter, 9 mSDsluCounter, 103 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 144 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-20 05:32:17,583 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [13 Valid, 144 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-20 05:32:17,584 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2022-03-20 05:32:17,596 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 71. [2022-03-20 05:32:17,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71 states, 36 states have (on average 1.3333333333333333) internal successors, (48), 40 states have internal predecessors, (48), 28 states have call successors, (28), 7 states have call predecessors, (28), 6 states have return successors, (24), 23 states have call predecessors, (24), 24 states have call successors, (24) [2022-03-20 05:32:17,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 100 transitions. [2022-03-20 05:32:17,598 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 100 transitions. Word has length 33 [2022-03-20 05:32:17,598 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 05:32:17,598 INFO L478 AbstractCegarLoop]: Abstraction has 71 states and 100 transitions. [2022-03-20 05:32:17,598 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 4 states have internal predecessors, (15), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-03-20 05:32:17,598 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 100 transitions. [2022-03-20 05:32:17,599 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2022-03-20 05:32:17,599 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 05:32:17,599 INFO L499 BasicCegarLoop]: trace histogram [4, 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] [2022-03-20 05:32:17,616 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-03-20 05:32:17,819 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-20 05:32:17,819 INFO L403 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 05:32:17,819 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 05:32:17,820 INFO L85 PathProgramCache]: Analyzing trace with hash -120478471, now seen corresponding path program 1 times [2022-03-20 05:32:17,820 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 05:32:17,820 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [313229648] [2022-03-20 05:32:17,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 05:32:17,820 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 05:32:17,828 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-03-20 05:32:17,828 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1657424062] [2022-03-20 05:32:17,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 05:32:17,829 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-20 05:32:17,829 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-20 05:32:17,830 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-20 05:32:17,831 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-03-20 05:32:17,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 05:32:17,865 INFO L263 TraceCheckSpWp]: Trace formula consists of 128 conjuncts, 5 conjunts are in the unsatisfiable core [2022-03-20 05:32:17,866 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-20 05:32:17,919 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-03-20 05:32:17,920 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-03-20 05:32:17,920 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 05:32:17,920 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [313229648] [2022-03-20 05:32:17,920 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-03-20 05:32:17,920 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1657424062] [2022-03-20 05:32:17,920 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1657424062] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 05:32:17,920 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 05:32:17,920 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-03-20 05:32:17,920 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2046711273] [2022-03-20 05:32:17,921 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 05:32:17,921 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-03-20 05:32:17,921 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-20 05:32:17,921 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-03-20 05:32:17,921 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-03-20 05:32:17,921 INFO L87 Difference]: Start difference. First operand 71 states and 100 transitions. Second operand has 5 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2022-03-20 05:32:17,950 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 05:32:17,951 INFO L93 Difference]: Finished difference Result 85 states and 121 transitions. [2022-03-20 05:32:17,951 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-03-20 05:32:17,951 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) Word has length 39 [2022-03-20 05:32:17,951 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 05:32:17,952 INFO L225 Difference]: With dead ends: 85 [2022-03-20 05:32:17,952 INFO L226 Difference]: Without dead ends: 85 [2022-03-20 05:32:17,952 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-03-20 05:32:17,954 INFO L913 BasicCegarLoop]: 44 mSDtfsCounter, 5 mSDsluCounter, 109 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 153 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-20 05:32:17,955 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [8 Valid, 153 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-20 05:32:17,955 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2022-03-20 05:32:17,959 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 78. [2022-03-20 05:32:17,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78 states, 39 states have (on average 1.3076923076923077) internal successors, (51), 46 states have internal predecessors, (51), 31 states have call successors, (31), 8 states have call predecessors, (31), 7 states have return successors, (27), 23 states have call predecessors, (27), 27 states have call successors, (27) [2022-03-20 05:32:17,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 109 transitions. [2022-03-20 05:32:17,961 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 109 transitions. Word has length 39 [2022-03-20 05:32:17,961 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 05:32:17,961 INFO L478 AbstractCegarLoop]: Abstraction has 78 states and 109 transitions. [2022-03-20 05:32:17,961 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2022-03-20 05:32:17,961 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 109 transitions. [2022-03-20 05:32:17,962 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2022-03-20 05:32:17,962 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 05:32:17,962 INFO L499 BasicCegarLoop]: trace histogram [4, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 05:32:17,980 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-03-20 05:32:18,179 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-20 05:32:18,180 INFO L403 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 05:32:18,180 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 05:32:18,180 INFO L85 PathProgramCache]: Analyzing trace with hash -1628466672, now seen corresponding path program 1 times [2022-03-20 05:32:18,180 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 05:32:18,180 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1136401458] [2022-03-20 05:32:18,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 05:32:18,181 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 05:32:18,188 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-03-20 05:32:18,188 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [631844642] [2022-03-20 05:32:18,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 05:32:18,188 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-20 05:32:18,189 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-20 05:32:18,190 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-20 05:32:18,191 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-03-20 05:32:18,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 05:32:18,225 INFO L263 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 7 conjunts are in the unsatisfiable core [2022-03-20 05:32:18,226 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-20 05:32:18,295 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-03-20 05:32:18,296 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-20 05:32:18,379 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-03-20 05:32:18,381 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 05:32:18,381 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1136401458] [2022-03-20 05:32:18,381 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-03-20 05:32:18,381 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [631844642] [2022-03-20 05:32:18,381 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [631844642] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-20 05:32:18,381 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-03-20 05:32:18,381 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 5 [2022-03-20 05:32:18,381 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [701486746] [2022-03-20 05:32:18,381 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-03-20 05:32:18,383 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-03-20 05:32:18,383 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-20 05:32:18,383 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-03-20 05:32:18,383 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-03-20 05:32:18,383 INFO L87 Difference]: Start difference. First operand 78 states and 109 transitions. Second operand has 5 states, 5 states have (on average 5.0) internal successors, (25), 5 states have internal predecessors, (25), 4 states have call successors, (13), 4 states have call predecessors, (13), 3 states have return successors, (11), 2 states have call predecessors, (11), 3 states have call successors, (11) [2022-03-20 05:32:18,417 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 05:32:18,417 INFO L93 Difference]: Finished difference Result 104 states and 130 transitions. [2022-03-20 05:32:18,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-03-20 05:32:18,417 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.0) internal successors, (25), 5 states have internal predecessors, (25), 4 states have call successors, (13), 4 states have call predecessors, (13), 3 states have return successors, (11), 2 states have call predecessors, (11), 3 states have call successors, (11) Word has length 42 [2022-03-20 05:32:18,418 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 05:32:18,418 INFO L225 Difference]: With dead ends: 104 [2022-03-20 05:32:18,418 INFO L226 Difference]: Without dead ends: 102 [2022-03-20 05:32:18,419 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 79 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-03-20 05:32:18,419 INFO L913 BasicCegarLoop]: 43 mSDtfsCounter, 13 mSDsluCounter, 75 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 118 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-20 05:32:18,419 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [13 Valid, 118 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-20 05:32:18,420 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2022-03-20 05:32:18,424 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 100. [2022-03-20 05:32:18,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 100 states, 57 states have (on average 1.2105263157894737) internal successors, (69), 63 states have internal predecessors, (69), 31 states have call successors, (31), 13 states have call predecessors, (31), 11 states have return successors, (27), 23 states have call predecessors, (27), 27 states have call successors, (27) [2022-03-20 05:32:18,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 127 transitions. [2022-03-20 05:32:18,426 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 127 transitions. Word has length 42 [2022-03-20 05:32:18,426 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 05:32:18,426 INFO L478 AbstractCegarLoop]: Abstraction has 100 states and 127 transitions. [2022-03-20 05:32:18,426 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.0) internal successors, (25), 5 states have internal predecessors, (25), 4 states have call successors, (13), 4 states have call predecessors, (13), 3 states have return successors, (11), 2 states have call predecessors, (11), 3 states have call successors, (11) [2022-03-20 05:32:18,426 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 127 transitions. [2022-03-20 05:32:18,427 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2022-03-20 05:32:18,427 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 05:32:18,427 INFO L499 BasicCegarLoop]: trace histogram [4, 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] [2022-03-20 05:32:18,444 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-03-20 05:32:18,639 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-20 05:32:18,639 INFO L403 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 05:32:18,640 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 05:32:18,640 INFO L85 PathProgramCache]: Analyzing trace with hash -1627394196, now seen corresponding path program 1 times [2022-03-20 05:32:18,640 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 05:32:18,640 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1302162410] [2022-03-20 05:32:18,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 05:32:18,640 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 05:32:18,647 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-03-20 05:32:18,647 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [311897650] [2022-03-20 05:32:18,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 05:32:18,648 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-20 05:32:18,648 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-20 05:32:18,649 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-20 05:32:18,657 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-03-20 05:32:18,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 05:32:18,691 INFO L263 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 11 conjunts are in the unsatisfiable core [2022-03-20 05:32:18,692 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-20 05:32:18,803 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-03-20 05:32:18,803 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-03-20 05:32:18,804 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 05:32:18,804 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1302162410] [2022-03-20 05:32:18,804 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-03-20 05:32:18,804 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [311897650] [2022-03-20 05:32:18,804 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [311897650] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 05:32:18,804 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 05:32:18,804 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-03-20 05:32:18,804 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1902217482] [2022-03-20 05:32:18,804 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 05:32:18,806 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-03-20 05:32:18,806 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-20 05:32:18,806 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-03-20 05:32:18,806 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-03-20 05:32:18,807 INFO L87 Difference]: Start difference. First operand 100 states and 127 transitions. Second operand has 5 states, 5 states have (on average 3.4) internal successors, (17), 4 states have internal predecessors, (17), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-03-20 05:32:18,833 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 05:32:18,834 INFO L93 Difference]: Finished difference Result 104 states and 130 transitions. [2022-03-20 05:32:18,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-03-20 05:32:18,834 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.4) internal successors, (17), 4 states have internal predecessors, (17), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 42 [2022-03-20 05:32:18,834 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 05:32:18,835 INFO L225 Difference]: With dead ends: 104 [2022-03-20 05:32:18,835 INFO L226 Difference]: Without dead ends: 103 [2022-03-20 05:32:18,835 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 37 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-03-20 05:32:18,836 INFO L913 BasicCegarLoop]: 39 mSDtfsCounter, 7 mSDsluCounter, 104 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 143 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-20 05:32:18,836 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [9 Valid, 143 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-20 05:32:18,837 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2022-03-20 05:32:18,841 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 103. [2022-03-20 05:32:18,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 103 states, 60 states have (on average 1.2) internal successors, (72), 66 states have internal predecessors, (72), 30 states have call successors, (30), 14 states have call predecessors, (30), 12 states have return successors, (26), 22 states have call predecessors, (26), 26 states have call successors, (26) [2022-03-20 05:32:18,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 128 transitions. [2022-03-20 05:32:18,842 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 128 transitions. Word has length 42 [2022-03-20 05:32:18,843 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 05:32:18,843 INFO L478 AbstractCegarLoop]: Abstraction has 103 states and 128 transitions. [2022-03-20 05:32:18,843 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.4) internal successors, (17), 4 states have internal predecessors, (17), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-03-20 05:32:18,843 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 128 transitions. [2022-03-20 05:32:18,843 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2022-03-20 05:32:18,844 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 05:32:18,844 INFO L499 BasicCegarLoop]: trace histogram [5, 4, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 05:32:18,863 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-03-20 05:32:19,055 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-20 05:32:19,056 INFO L403 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 05:32:19,056 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 05:32:19,056 INFO L85 PathProgramCache]: Analyzing trace with hash -1527150038, now seen corresponding path program 1 times [2022-03-20 05:32:19,056 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 05:32:19,056 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [767760805] [2022-03-20 05:32:19,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 05:32:19,057 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 05:32:19,082 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-03-20 05:32:19,082 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [388334772] [2022-03-20 05:32:19,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 05:32:19,082 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-20 05:32:19,083 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-20 05:32:19,091 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-20 05:32:19,092 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-03-20 05:32:19,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 05:32:19,127 INFO L263 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 10 conjunts are in the unsatisfiable core [2022-03-20 05:32:19,129 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-20 05:32:19,200 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 10 proven. 7 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-03-20 05:32:19,200 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-20 05:32:19,315 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 10 proven. 7 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-03-20 05:32:19,315 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 05:32:19,315 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [767760805] [2022-03-20 05:32:19,316 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-03-20 05:32:19,316 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [388334772] [2022-03-20 05:32:19,316 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [388334772] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-20 05:32:19,316 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-03-20 05:32:19,316 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 9 [2022-03-20 05:32:19,316 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1290678206] [2022-03-20 05:32:19,316 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-03-20 05:32:19,322 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-03-20 05:32:19,322 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-20 05:32:19,322 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-03-20 05:32:19,322 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2022-03-20 05:32:19,323 INFO L87 Difference]: Start difference. First operand 103 states and 128 transitions. Second operand has 9 states, 8 states have (on average 2.625) internal successors, (21), 7 states have internal predecessors, (21), 3 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-03-20 05:32:19,426 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 05:32:19,426 INFO L93 Difference]: Finished difference Result 116 states and 145 transitions. [2022-03-20 05:32:19,426 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-03-20 05:32:19,427 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.625) internal successors, (21), 7 states have internal predecessors, (21), 3 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 44 [2022-03-20 05:32:19,427 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 05:32:19,428 INFO L225 Difference]: With dead ends: 116 [2022-03-20 05:32:19,428 INFO L226 Difference]: Without dead ends: 106 [2022-03-20 05:32:19,428 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 79 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2022-03-20 05:32:19,428 INFO L913 BasicCegarLoop]: 29 mSDtfsCounter, 15 mSDsluCounter, 155 mSDsCounter, 0 mSdLazyCounter, 164 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 184 SdHoareTripleChecker+Invalid, 175 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 164 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-20 05:32:19,428 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [18 Valid, 184 Invalid, 175 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 164 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-20 05:32:19,429 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2022-03-20 05:32:19,433 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 104. [2022-03-20 05:32:19,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 104 states, 60 states have (on average 1.1833333333333333) internal successors, (71), 67 states have internal predecessors, (71), 31 states have call successors, (31), 13 states have call predecessors, (31), 12 states have return successors, (28), 23 states have call predecessors, (28), 28 states have call successors, (28) [2022-03-20 05:32:19,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 130 transitions. [2022-03-20 05:32:19,434 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 130 transitions. Word has length 44 [2022-03-20 05:32:19,434 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 05:32:19,434 INFO L478 AbstractCegarLoop]: Abstraction has 104 states and 130 transitions. [2022-03-20 05:32:19,435 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 2.625) internal successors, (21), 7 states have internal predecessors, (21), 3 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-03-20 05:32:19,435 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 130 transitions. [2022-03-20 05:32:19,435 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-03-20 05:32:19,435 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 05:32:19,435 INFO L499 BasicCegarLoop]: trace histogram [5, 4, 4, 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] [2022-03-20 05:32:19,454 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-03-20 05:32:19,647 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-20 05:32:19,648 INFO L403 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 05:32:19,648 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 05:32:19,648 INFO L85 PathProgramCache]: Analyzing trace with hash -1237367986, now seen corresponding path program 2 times [2022-03-20 05:32:19,648 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 05:32:19,648 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [90411171] [2022-03-20 05:32:19,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 05:32:19,649 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 05:32:19,655 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-03-20 05:32:19,655 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [807758309] [2022-03-20 05:32:19,655 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-20 05:32:19,655 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-20 05:32:19,655 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-20 05:32:19,656 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-20 05:32:19,658 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-03-20 05:32:19,706 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-20 05:32:19,707 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-20 05:32:19,708 INFO L263 TraceCheckSpWp]: Trace formula consists of 148 conjuncts, 25 conjunts are in the unsatisfiable core [2022-03-20 05:32:19,709 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-20 05:32:19,876 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 8 proven. 4 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2022-03-20 05:32:19,876 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-20 05:32:19,965 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 8 proven. 4 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2022-03-20 05:32:19,966 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 05:32:19,966 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [90411171] [2022-03-20 05:32:19,966 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-03-20 05:32:19,966 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [807758309] [2022-03-20 05:32:19,966 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [807758309] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-20 05:32:19,966 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-03-20 05:32:19,966 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 8 [2022-03-20 05:32:19,966 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1032958159] [2022-03-20 05:32:19,966 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-03-20 05:32:19,967 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-03-20 05:32:19,967 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-20 05:32:19,967 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-03-20 05:32:19,967 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-03-20 05:32:19,967 INFO L87 Difference]: Start difference. First operand 104 states and 130 transitions. Second operand has 8 states, 8 states have (on average 3.25) internal successors, (26), 7 states have internal predecessors, (26), 5 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (11), 5 states have call predecessors, (11), 5 states have call successors, (11) [2022-03-20 05:32:20,333 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 05:32:20,334 INFO L93 Difference]: Finished difference Result 129 states and 167 transitions. [2022-03-20 05:32:20,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-03-20 05:32:20,334 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 3.25) internal successors, (26), 7 states have internal predecessors, (26), 5 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (11), 5 states have call predecessors, (11), 5 states have call successors, (11) Word has length 47 [2022-03-20 05:32:20,334 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 05:32:20,335 INFO L225 Difference]: With dead ends: 129 [2022-03-20 05:32:20,335 INFO L226 Difference]: Without dead ends: 124 [2022-03-20 05:32:20,335 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 86 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2022-03-20 05:32:20,336 INFO L913 BasicCegarLoop]: 43 mSDtfsCounter, 15 mSDsluCounter, 162 mSDsCounter, 0 mSdLazyCounter, 99 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 205 SdHoareTripleChecker+Invalid, 139 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 99 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-20 05:32:20,336 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [15 Valid, 205 Invalid, 139 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 99 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-03-20 05:32:20,336 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2022-03-20 05:32:20,340 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 108. [2022-03-20 05:32:20,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 108 states, 66 states have (on average 1.1515151515151516) internal successors, (76), 72 states have internal predecessors, (76), 27 states have call successors, (27), 15 states have call predecessors, (27), 14 states have return successors, (23), 20 states have call predecessors, (23), 23 states have call successors, (23) [2022-03-20 05:32:20,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 126 transitions. [2022-03-20 05:32:20,341 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 126 transitions. Word has length 47 [2022-03-20 05:32:20,341 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 05:32:20,341 INFO L478 AbstractCegarLoop]: Abstraction has 108 states and 126 transitions. [2022-03-20 05:32:20,341 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 3.25) internal successors, (26), 7 states have internal predecessors, (26), 5 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (11), 5 states have call predecessors, (11), 5 states have call successors, (11) [2022-03-20 05:32:20,341 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 126 transitions. [2022-03-20 05:32:20,342 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2022-03-20 05:32:20,342 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 05:32:20,342 INFO L499 BasicCegarLoop]: trace histogram [7, 6, 6, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 05:32:20,368 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-03-20 05:32:20,555 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-03-20 05:32:20,556 INFO L403 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 05:32:20,556 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 05:32:20,556 INFO L85 PathProgramCache]: Analyzing trace with hash -1153573054, now seen corresponding path program 2 times [2022-03-20 05:32:20,556 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 05:32:20,556 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1768982235] [2022-03-20 05:32:20,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 05:32:20,556 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 05:32:20,563 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-03-20 05:32:20,564 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1297775849] [2022-03-20 05:32:20,564 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-20 05:32:20,564 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-20 05:32:20,564 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-20 05:32:20,565 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-20 05:32:20,566 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-03-20 05:32:20,609 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-20 05:32:20,609 INFO L229 tOrderPrioritization]: Conjunction of SSA is sat [2022-03-20 05:32:20,609 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-03-20 05:32:20,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-03-20 05:32:20,662 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-03-20 05:32:20,663 INFO L618 BasicCegarLoop]: Counterexample is feasible [2022-03-20 05:32:20,663 INFO L788 garLoopResultBuilder]: Registering result UNSAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-03-20 05:32:20,696 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-03-20 05:32:20,894 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-20 05:32:20,897 INFO L719 BasicCegarLoop]: Path program histogram: [2, 2, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 05:32:20,899 INFO L180 ceAbstractionStarter]: Computing trace abstraction results [2022-03-20 05:32:20,926 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.03 05:32:20 BasicIcfg [2022-03-20 05:32:20,926 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-03-20 05:32:20,926 INFO L158 Benchmark]: Toolchain (without parser) took 5987.77ms. Allocated memory was 183.5MB in the beginning and 231.7MB in the end (delta: 48.2MB). Free memory was 133.6MB in the beginning and 111.3MB in the end (delta: 22.3MB). Peak memory consumption was 71.5MB. Max. memory is 8.0GB. [2022-03-20 05:32:20,927 INFO L158 Benchmark]: CDTParser took 0.09ms. Allocated memory is still 183.5MB. Free memory was 149.8MB in the beginning and 149.7MB in the end (delta: 146.8kB). There was no memory consumed. Max. memory is 8.0GB. [2022-03-20 05:32:20,927 INFO L158 Benchmark]: CACSL2BoogieTranslator took 215.01ms. Allocated memory is still 183.5MB. Free memory was 133.3MB in the beginning and 159.9MB in the end (delta: -26.5MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. [2022-03-20 05:32:20,927 INFO L158 Benchmark]: Boogie Preprocessor took 22.57ms. Allocated memory is still 183.5MB. Free memory was 159.9MB in the beginning and 158.4MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-03-20 05:32:20,927 INFO L158 Benchmark]: RCFGBuilder took 222.25ms. Allocated memory is still 183.5MB. Free memory was 158.4MB in the beginning and 147.9MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. [2022-03-20 05:32:20,927 INFO L158 Benchmark]: IcfgTransformer took 19.27ms. Allocated memory is still 183.5MB. Free memory was 147.9MB in the beginning and 146.5MB in the end (delta: 1.5MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-03-20 05:32:20,928 INFO L158 Benchmark]: TraceAbstraction took 5502.82ms. Allocated memory was 183.5MB in the beginning and 231.7MB in the end (delta: 48.2MB). Free memory was 145.8MB in the beginning and 111.3MB in the end (delta: 34.5MB). Peak memory consumption was 83.2MB. Max. memory is 8.0GB. [2022-03-20 05:32:20,929 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 183.5MB. Free memory was 149.8MB in the beginning and 149.7MB in the end (delta: 146.8kB). There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 215.01ms. Allocated memory is still 183.5MB. Free memory was 133.3MB in the beginning and 159.9MB in the end (delta: -26.5MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. * Boogie Preprocessor took 22.57ms. Allocated memory is still 183.5MB. Free memory was 159.9MB in the beginning and 158.4MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 222.25ms. Allocated memory is still 183.5MB. Free memory was 158.4MB in the beginning and 147.9MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. * IcfgTransformer took 19.27ms. Allocated memory is still 183.5MB. Free memory was 147.9MB in the beginning and 146.5MB in the end (delta: 1.5MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * TraceAbstraction took 5502.82ms. Allocated memory was 183.5MB in the beginning and 231.7MB in the end (delta: 48.2MB). Free memory was 145.8MB in the beginning and 111.3MB in the end (delta: 34.5MB). Peak memory consumption was 83.2MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 13]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L18] int counter = 0; VAL [\old(counter)=5, counter=0] [L20] long long a, b, p, q, r, s; [L21] int x, y; [L22] x = __VERIFIER_nondet_int() [L23] y = __VERIFIER_nondet_int() [L24] CALL assume_abort_if_not(x >= 1) VAL [\old(cond)=1, \old(counter)=0, counter=0] [L8] COND FALSE !(!cond) VAL [\old(cond)=1, \old(counter)=0, cond=1, counter=0] [L24] RET assume_abort_if_not(x >= 1) VAL [\old(counter)=0, counter=0, x=4, y=1] [L25] CALL assume_abort_if_not(y >= 1) VAL [\old(cond)=1, \old(counter)=0, counter=0] [L8] COND FALSE !(!cond) VAL [\old(cond)=1, \old(counter)=0, cond=1, counter=0] [L25] RET assume_abort_if_not(y >= 1) VAL [\old(counter)=0, counter=0, x=4, y=1] [L27] a = x [L28] b = y [L29] p = 1 [L30] q = 0 [L31] r = 0 [L32] s = 1 VAL [\old(counter)=0, a=4, b=1, counter=0, p=1, q=0, r=0, s=1, x=4, y=1] [L34] EXPR counter++ VAL [\old(counter)=0, a=4, b=1, counter=1, counter++=0, p=1, q=0, r=0, s=1, x=4, y=1] [L34] COND TRUE counter++<2 [L35] CALL __VERIFIER_assert(1 == p * s - r * q) VAL [\old(cond)=1, \old(counter)=0, counter=1] [L11] COND FALSE !(!(cond)) VAL [\old(cond)=1, \old(counter)=0, cond=1, counter=1] [L35] RET __VERIFIER_assert(1 == p * s - r * q) VAL [\old(counter)=0, a=4, b=1, counter=1, p=1, q=0, r=0, s=1, x=4, y=1] [L36] CALL __VERIFIER_assert(a == y * r + x * p) VAL [\old(cond)=1, \old(counter)=0, counter=1] [L11] COND FALSE !(!(cond)) VAL [\old(cond)=1, \old(counter)=0, cond=1, counter=1] [L36] RET __VERIFIER_assert(a == y * r + x * p) VAL [\old(counter)=0, a=4, b=1, counter=1, p=1, q=0, r=0, s=1, x=4, y=1] [L37] CALL __VERIFIER_assert(b == x * q + y * s) VAL [\old(cond)=1, \old(counter)=0, counter=1] [L11] COND FALSE !(!(cond)) VAL [\old(cond)=1, \old(counter)=0, cond=1, counter=1] [L37] RET __VERIFIER_assert(b == x * q + y * s) VAL [\old(counter)=0, a=4, b=1, counter=1, p=1, q=0, r=0, s=1, x=4, y=1] [L39] COND FALSE !(!(a != b)) VAL [\old(counter)=0, a=4, b=1, counter=1, p=1, q=0, r=0, s=1, x=4, y=1] [L42] COND TRUE a > b [L43] a = a - b [L44] p = p - q [L45] r = r - s VAL [\old(counter)=0, a=3, b=1, counter=1, p=1, q=0, r=-1, s=1, x=4, y=1] [L34] EXPR counter++ VAL [\old(counter)=0, a=3, b=1, counter=2, counter++=1, p=1, q=0, r=-1, s=1, x=4, y=1] [L34] COND TRUE counter++<2 [L35] CALL __VERIFIER_assert(1 == p * s - r * q) VAL [\old(cond)=1, \old(counter)=0, counter=2] [L11] COND FALSE !(!(cond)) VAL [\old(cond)=1, \old(counter)=0, cond=1, counter=2] [L35] RET __VERIFIER_assert(1 == p * s - r * q) VAL [\old(counter)=0, a=3, b=1, counter=2, p=1, q=0, r=-1, s=1, x=4, y=1] [L36] CALL __VERIFIER_assert(a == y * r + x * p) VAL [\old(cond)=1, \old(counter)=0, counter=2] [L11] COND FALSE !(!(cond)) VAL [\old(cond)=1, \old(counter)=0, cond=1, counter=2] [L36] RET __VERIFIER_assert(a == y * r + x * p) VAL [\old(counter)=0, a=3, b=1, counter=2, p=1, q=0, r=-1, s=1, x=4, y=1] [L37] CALL __VERIFIER_assert(b == x * q + y * s) VAL [\old(cond)=1, \old(counter)=0, counter=2] [L11] COND FALSE !(!(cond)) VAL [\old(cond)=1, \old(counter)=0, cond=1, counter=2] [L37] RET __VERIFIER_assert(b == x * q + y * s) VAL [\old(counter)=0, a=3, b=1, counter=2, p=1, q=0, r=-1, s=1, x=4, y=1] [L39] COND FALSE !(!(a != b)) VAL [\old(counter)=0, a=3, b=1, counter=2, p=1, q=0, r=-1, s=1, x=4, y=1] [L42] COND TRUE a > b [L43] a = a - b [L44] p = p - q [L45] r = r - s VAL [\old(counter)=0, a=2, b=1, counter=2, p=1, q=0, r=-2, s=1, x=4, y=1] [L34] EXPR counter++ VAL [\old(counter)=0, a=2, b=1, counter=3, counter++=2, p=1, q=0, r=-2, s=1, x=4, y=1] [L34] COND FALSE !(counter++<2) [L53] CALL __VERIFIER_assert(a - b == 0) VAL [\old(cond)=0, \old(counter)=0, counter=3] [L11] COND TRUE !(cond) VAL [\old(cond)=0, \old(counter)=0, cond=0, counter=3] [L13] reach_error() VAL [\old(cond)=0, \old(counter)=0, cond=0, counter=3] - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 35 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 5.4s, OverallIterations: 11, TraceHistogramMax: 7, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 1.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 150 SdHoareTripleChecker+Valid, 0.7s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 119 mSDsluCounter, 1421 SdHoareTripleChecker+Invalid, 0.6s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1022 mSDsCounter, 93 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 559 IncrementalHoareTripleChecker+Invalid, 652 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 93 mSolverCounterUnsat, 399 mSDtfsCounter, 559 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 494 GetRequests, 431 SyntacticMatches, 6 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=108occurred in iteration=10, InterpolantAutomatonStates: 59, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 10 MinimizatonAttempts, 30 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.6s InterpolantComputationTime, 404 NumberOfCodeBlocks, 404 NumberOfCodeBlocksAsserted, 13 NumberOfCheckSat, 495 ConstructedInterpolants, 0 QuantifiedInterpolants, 1409 SizeOfPredicates, 17 NumberOfNonLiveVariables, 1015 ConjunctsInSsa, 95 ConjunctsInUnsatCore, 14 InterpolantComputations, 6 PerfectInterpolantSequences, 257/289 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2022-03-20 05:32:20,965 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request...