/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/AutomizerC.xml -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationJordan_32.epf -i ../../../trunk/examples/svcomp/nla-digbench-scaling/egcd3-ll_valuebound2.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-34549b5 [2022-04-06 16:41:39,763 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-04-06 16:41:39,764 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-04-06 16:41:39,795 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-04-06 16:41:39,795 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-04-06 16:41:39,796 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-04-06 16:41:39,800 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-04-06 16:41:39,804 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-04-06 16:41:39,805 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-04-06 16:41:39,808 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-04-06 16:41:39,809 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-04-06 16:41:39,810 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-04-06 16:41:39,810 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-04-06 16:41:39,811 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-04-06 16:41:39,812 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-04-06 16:41:39,813 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-04-06 16:41:39,813 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-04-06 16:41:39,814 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-04-06 16:41:39,817 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-04-06 16:41:39,821 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-04-06 16:41:39,822 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-04-06 16:41:39,823 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-04-06 16:41:39,823 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-04-06 16:41:39,824 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-04-06 16:41:39,825 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-04-06 16:41:39,829 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-04-06 16:41:39,835 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-04-06 16:41:39,836 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-04-06 16:41:39,837 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-04-06 16:41:39,837 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationJordan_32.epf [2022-04-06 16:41:39,845 INFO L113 SettingsManager]: Loading preferences was successful [2022-04-06 16:41:39,845 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-04-06 16:41:39,847 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-04-06 16:41:39,847 INFO L138 SettingsManager]: * sizeof long=4 [2022-04-06 16:41:39,847 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-04-06 16:41:39,847 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-04-06 16:41:39,847 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-04-06 16:41:39,847 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-04-06 16:41:39,847 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-04-06 16:41:39,848 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-04-06 16:41:39,848 INFO L138 SettingsManager]: * sizeof long double=12 [2022-04-06 16:41:39,848 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-04-06 16:41:39,848 INFO L138 SettingsManager]: * Use constant arrays=true [2022-04-06 16:41:39,848 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-04-06 16:41:39,848 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-04-06 16:41:39,848 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-04-06 16:41:39,848 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-04-06 16:41:39,848 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-04-06 16:41:39,848 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-04-06 16:41:39,849 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-04-06 16:41:39,849 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_NestedInterpolation [2022-04-06 16:41:39,849 INFO L138 SettingsManager]: * Trace refinement strategy=ACCELERATED_INTERPOLATION [2022-04-06 16:41:39,849 INFO L138 SettingsManager]: * Trace refinement strategy used in Accelerated Interpolation=CAMEL [2022-04-06 16:41:39,849 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-04-06 16:41:39,849 INFO L138 SettingsManager]: * Loop acceleration method that is used by accelerated interpolation=JORDAN [2022-04-06 16:41:39,849 INFO L138 SettingsManager]: * Use separate solver for trace checks=false 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-04-06 16:41:40,035 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-04-06 16:41:40,054 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-04-06 16:41:40,056 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-04-06 16:41:40,057 INFO L271 PluginConnector]: Initializing CDTParser... [2022-04-06 16:41:40,067 INFO L275 PluginConnector]: CDTParser initialized [2022-04-06 16:41:40,068 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/nla-digbench-scaling/egcd3-ll_valuebound2.c [2022-04-06 16:41:40,111 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8ff85237a/2caed9d20f184dc38abf8f3eef6347ea/FLAGb88b2bf18 [2022-04-06 16:41:40,453 INFO L306 CDTParser]: Found 1 translation units. [2022-04-06 16:41:40,454 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench-scaling/egcd3-ll_valuebound2.c [2022-04-06 16:41:40,463 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8ff85237a/2caed9d20f184dc38abf8f3eef6347ea/FLAGb88b2bf18 [2022-04-06 16:41:40,890 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8ff85237a/2caed9d20f184dc38abf8f3eef6347ea [2022-04-06 16:41:40,891 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-04-06 16:41:40,892 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2022-04-06 16:41:40,899 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-04-06 16:41:40,900 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-04-06 16:41:40,903 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-04-06 16:41:40,903 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.04 04:41:40" (1/1) ... [2022-04-06 16:41:40,904 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@70eb2fc4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.04 04:41:40, skipping insertion in model container [2022-04-06 16:41:40,904 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.04 04:41:40" (1/1) ... [2022-04-06 16:41:40,910 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-04-06 16:41:40,922 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-04-06 16:41:41,028 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/egcd3-ll_valuebound2.c[490,503] [2022-04-06 16:41:41,051 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-04-06 16:41:41,055 INFO L203 MainTranslator]: Completed pre-run [2022-04-06 16:41:41,063 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/egcd3-ll_valuebound2.c[490,503] [2022-04-06 16:41:41,068 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-04-06 16:41:41,076 INFO L208 MainTranslator]: Completed translation [2022-04-06 16:41:41,077 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.04 04:41:41 WrapperNode [2022-04-06 16:41:41,077 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-04-06 16:41:41,078 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-04-06 16:41:41,078 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-04-06 16:41:41,078 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-04-06 16:41:41,084 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.04 04:41:41" (1/1) ... [2022-04-06 16:41:41,085 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.04 04:41:41" (1/1) ... [2022-04-06 16:41:41,089 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.04 04:41:41" (1/1) ... [2022-04-06 16:41:41,089 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.04 04:41:41" (1/1) ... [2022-04-06 16:41:41,092 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.04 04:41:41" (1/1) ... [2022-04-06 16:41:41,095 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.04 04:41:41" (1/1) ... [2022-04-06 16:41:41,096 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.04 04:41:41" (1/1) ... [2022-04-06 16:41:41,097 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-04-06 16:41:41,098 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-04-06 16:41:41,098 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-04-06 16:41:41,098 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-04-06 16:41:41,098 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.04 04:41:41" (1/1) ... [2022-04-06 16:41:41,111 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-04-06 16:41:41,119 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-06 16:41:41,127 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) [2022-04-06 16:41:41,146 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 [2022-04-06 16:41:41,169 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2022-04-06 16:41:41,169 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-04-06 16:41:41,169 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2022-04-06 16:41:41,170 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-04-06 16:41:41,170 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-04-06 16:41:41,170 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2022-04-06 16:41:41,170 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2022-04-06 16:41:41,170 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2022-04-06 16:41:41,170 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2022-04-06 16:41:41,170 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-04-06 16:41:41,170 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2022-04-06 16:41:41,170 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-04-06 16:41:41,170 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-04-06 16:41:41,170 INFO L130 BoogieDeclarations]: Found specification of procedure main [2022-04-06 16:41:41,170 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2022-04-06 16:41:41,170 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-04-06 16:41:41,170 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-04-06 16:41:41,171 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-04-06 16:41:41,171 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-04-06 16:41:41,171 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-04-06 16:41:41,215 INFO L234 CfgBuilder]: Building ICFG [2022-04-06 16:41:41,216 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-04-06 16:41:41,313 INFO L275 CfgBuilder]: Performing block encoding [2022-04-06 16:41:41,317 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-04-06 16:41:41,317 INFO L299 CfgBuilder]: Removed 3 assume(true) statements. [2022-04-06 16:41:41,318 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.04 04:41:41 BoogieIcfgContainer [2022-04-06 16:41:41,318 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-04-06 16:41:41,319 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-04-06 16:41:41,319 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-04-06 16:41:41,328 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-04-06 16:41:41,328 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.04 04:41:40" (1/3) ... [2022-04-06 16:41:41,328 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7adf78f3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.04 04:41:41, skipping insertion in model container [2022-04-06 16:41:41,329 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.04 04:41:41" (2/3) ... [2022-04-06 16:41:41,329 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7adf78f3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.04 04:41:41, skipping insertion in model container [2022-04-06 16:41:41,329 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.04 04:41:41" (3/3) ... [2022-04-06 16:41:41,329 INFO L111 eAbstractionObserver]: Analyzing ICFG egcd3-ll_valuebound2.c [2022-04-06 16:41:41,332 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2022-04-06 16:41:41,332 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-04-06 16:41:41,388 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-04-06 16:41:41,393 INFO L340 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=Craig_NestedInterpolation, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, 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 [2022-04-06 16:41:41,393 INFO L341 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-04-06 16:41:41,420 INFO L276 IsEmpty]: Start isEmpty. Operand has 40 states, 23 states have (on average 1.5217391304347827) internal successors, (35), 24 states have internal predecessors, (35), 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) [2022-04-06 16:41:41,425 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-04-06 16:41:41,426 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 16:41:41,426 INFO L499 BasicCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-06 16:41:41,426 INFO L403 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 16:41:41,442 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 16:41:41,443 INFO L85 PathProgramCache]: Analyzing trace with hash 1237885594, now seen corresponding path program 1 times [2022-04-06 16:41:41,448 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-06 16:41:41,448 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1410234104] [2022-04-06 16:41:41,455 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-04-06 16:41:41,455 INFO L85 PathProgramCache]: Analyzing trace with hash 1237885594, now seen corresponding path program 2 times [2022-04-06 16:41:41,457 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 16:41:41,457 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [540319116] [2022-04-06 16:41:41,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 16:41:41,457 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 16:41:41,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 16:41:41,610 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 16:41:41,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 16:41:41,620 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-06 16:41:41,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 16:41:41,640 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-06 16:41:41,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 16:41:41,647 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-04-06 16:41:41,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 16:41:41,653 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-04-06 16:41:41,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 16:41:41,658 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-04-06 16:41:41,658 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 16:41:41,659 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [540319116] [2022-04-06 16:41:41,659 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [540319116] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 16:41:41,659 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 16:41:41,659 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-04-06 16:41:41,663 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-06 16:41:41,663 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1410234104] [2022-04-06 16:41:41,663 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1410234104] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 16:41:41,663 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 16:41:41,664 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-04-06 16:41:41,664 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1328806891] [2022-04-06 16:41:41,664 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 16:41:41,667 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-04-06 16:41:41,667 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-06 16:41:41,684 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-04-06 16:41:41,684 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-04-06 16:41:41,686 INFO L87 Difference]: Start difference. First operand has 40 states, 23 states have (on average 1.5217391304347827) internal successors, (35), 24 states have internal predecessors, (35), 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 4.0) internal successors, (12), 2 states have internal predecessors, (12), 2 states have call successors, (7), 3 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-04-06 16:41:41,741 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 16:41:41,741 INFO L93 Difference]: Finished difference Result 73 states and 115 transitions. [2022-04-06 16:41:41,745 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-04-06 16:41:41,746 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 2 states have internal predecessors, (12), 2 states have call successors, (7), 3 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 33 [2022-04-06 16:41:41,746 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 16:41:41,750 INFO L225 Difference]: With dead ends: 73 [2022-04-06 16:41:41,751 INFO L226 Difference]: Without dead ends: 35 [2022-04-06 16:41:41,753 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-04-06 16:41:41,755 INFO L913 BasicCegarLoop]: 40 mSDtfsCounter, 24 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 43 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-04-06 16:41:41,755 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [33 Valid, 43 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-04-06 16:41:41,765 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2022-04-06 16:41:41,778 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2022-04-06 16:41:41,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 20 states have (on average 1.2) internal successors, (24), 21 states have internal predecessors, (24), 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) [2022-04-06 16:41:41,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 44 transitions. [2022-04-06 16:41:41,780 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 44 transitions. Word has length 33 [2022-04-06 16:41:41,781 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 16:41:41,781 INFO L478 AbstractCegarLoop]: Abstraction has 35 states and 44 transitions. [2022-04-06 16:41:41,781 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 2 states have internal predecessors, (12), 2 states have call successors, (7), 3 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-04-06 16:41:41,781 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 44 transitions. [2022-04-06 16:41:41,782 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2022-04-06 16:41:41,782 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 16:41:41,782 INFO L499 BasicCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-06 16:41:41,782 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-04-06 16:41:41,782 INFO L403 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 16:41:41,783 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 16:41:41,783 INFO L85 PathProgramCache]: Analyzing trace with hash 1569470122, now seen corresponding path program 1 times [2022-04-06 16:41:41,783 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-06 16:41:41,783 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [86778243] [2022-04-06 16:41:41,784 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-04-06 16:41:41,784 INFO L85 PathProgramCache]: Analyzing trace with hash 1569470122, now seen corresponding path program 2 times [2022-04-06 16:41:41,784 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 16:41:41,784 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1937016465] [2022-04-06 16:41:41,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 16:41:41,784 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 16:41:41,799 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-04-06 16:41:41,799 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1110891976] [2022-04-06 16:41:41,799 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-04-06 16:41:41,800 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 16:41:41,800 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-06 16:41:41,801 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) [2022-04-06 16:41:41,802 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-04-06 16:41:41,846 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-04-06 16:41:41,846 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-06 16:41:41,848 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 17 conjunts are in the unsatisfiable core [2022-04-06 16:41:41,851 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-06 16:41:41,998 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-04-06 16:41:41,999 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-04-06 16:41:41,999 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 16:41:41,999 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1937016465] [2022-04-06 16:41:41,999 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-04-06 16:41:41,999 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1110891976] [2022-04-06 16:41:41,999 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1110891976] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 16:41:42,000 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 16:41:42,000 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-04-06 16:41:42,000 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-06 16:41:42,001 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [86778243] [2022-04-06 16:41:42,001 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [86778243] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 16:41:42,001 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 16:41:42,001 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-04-06 16:41:42,001 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [988376540] [2022-04-06 16:41:42,001 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 16:41:42,002 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-04-06 16:41:42,002 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-06 16:41:42,002 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-04-06 16:41:42,002 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-04-06 16:41:42,002 INFO L87 Difference]: Start difference. First operand 35 states and 44 transitions. Second operand has 6 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2022-04-06 16:41:42,077 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 16:41:42,078 INFO L93 Difference]: Finished difference Result 54 states and 69 transitions. [2022-04-06 16:41:42,078 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-04-06 16:41:42,078 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 34 [2022-04-06 16:41:42,078 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 16:41:42,079 INFO L225 Difference]: With dead ends: 54 [2022-04-06 16:41:42,079 INFO L226 Difference]: Without dead ends: 51 [2022-04-06 16:41:42,080 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-04-06 16:41:42,081 INFO L913 BasicCegarLoop]: 43 mSDtfsCounter, 14 mSDsluCounter, 130 mSDsCounter, 0 mSdLazyCounter, 79 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 173 SdHoareTripleChecker+Invalid, 81 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 79 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-04-06 16:41:42,081 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [18 Valid, 173 Invalid, 81 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 79 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-04-06 16:41:42,082 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2022-04-06 16:41:42,090 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 50. [2022-04-06 16:41:42,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50 states, 30 states have (on average 1.2) internal successors, (36), 31 states have internal predecessors, (36), 15 states have call successors, (15), 5 states have call predecessors, (15), 4 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2022-04-06 16:41:42,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 64 transitions. [2022-04-06 16:41:42,091 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 64 transitions. Word has length 34 [2022-04-06 16:41:42,091 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 16:41:42,092 INFO L478 AbstractCegarLoop]: Abstraction has 50 states and 64 transitions. [2022-04-06 16:41:42,092 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2022-04-06 16:41:42,092 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 64 transitions. [2022-04-06 16:41:42,093 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2022-04-06 16:41:42,093 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 16:41:42,093 INFO L499 BasicCegarLoop]: trace histogram [4, 4, 4, 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] [2022-04-06 16:41:42,124 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-04-06 16:41:42,309 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 16:41:42,310 INFO L403 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 16:41:42,310 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 16:41:42,310 INFO L85 PathProgramCache]: Analyzing trace with hash 584996456, now seen corresponding path program 1 times [2022-04-06 16:41:42,310 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-06 16:41:42,310 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [393019499] [2022-04-06 16:41:42,311 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-04-06 16:41:42,311 INFO L85 PathProgramCache]: Analyzing trace with hash 584996456, now seen corresponding path program 2 times [2022-04-06 16:41:42,311 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 16:41:42,311 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [692248025] [2022-04-06 16:41:42,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 16:41:42,312 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 16:41:42,330 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-04-06 16:41:42,330 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1482156165] [2022-04-06 16:41:42,330 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-04-06 16:41:42,331 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 16:41:42,331 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-06 16:41:42,339 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) [2022-04-06 16:41:42,340 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-04-06 16:41:42,378 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-04-06 16:41:42,378 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-06 16:41:42,379 INFO L263 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 9 conjunts are in the unsatisfiable core [2022-04-06 16:41:42,382 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-06 16:41:42,488 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 6 proven. 5 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-04-06 16:41:42,489 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-06 16:41:42,607 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 6 proven. 5 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-04-06 16:41:42,607 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 16:41:42,607 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [692248025] [2022-04-06 16:41:42,607 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-04-06 16:41:42,607 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1482156165] [2022-04-06 16:41:42,607 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1482156165] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-06 16:41:42,607 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-04-06 16:41:42,608 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 9 [2022-04-06 16:41:42,609 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-06 16:41:42,609 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [393019499] [2022-04-06 16:41:42,609 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [393019499] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 16:41:42,609 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 16:41:42,609 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-04-06 16:41:42,609 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [108397288] [2022-04-06 16:41:42,609 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 16:41:42,610 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-04-06 16:41:42,610 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-06 16:41:42,610 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-04-06 16:41:42,611 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2022-04-06 16:41:42,611 INFO L87 Difference]: Start difference. First operand 50 states and 64 transitions. Second operand has 8 states, 8 states have (on average 2.625) internal successors, (21), 7 states have internal predecessors, (21), 3 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-04-06 16:41:42,796 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 16:41:42,796 INFO L93 Difference]: Finished difference Result 103 states and 143 transitions. [2022-04-06 16:41:42,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-04-06 16:41:42,797 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.625) internal successors, (21), 7 states have internal predecessors, (21), 3 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 39 [2022-04-06 16:41:42,797 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 16:41:42,800 INFO L225 Difference]: With dead ends: 103 [2022-04-06 16:41:42,800 INFO L226 Difference]: Without dead ends: 96 [2022-04-06 16:41:42,801 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 69 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=47, Invalid=135, Unknown=0, NotChecked=0, Total=182 [2022-04-06 16:41:42,802 INFO L913 BasicCegarLoop]: 51 mSDtfsCounter, 58 mSDsluCounter, 181 mSDsCounter, 0 mSdLazyCounter, 165 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 62 SdHoareTripleChecker+Valid, 232 SdHoareTripleChecker+Invalid, 211 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 165 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-04-06 16:41:42,802 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [62 Valid, 232 Invalid, 211 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 165 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-04-06 16:41:42,803 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2022-04-06 16:41:42,813 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 71. [2022-04-06 16:41:42,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71 states, 47 states have (on average 1.2553191489361701) internal successors, (59), 48 states have internal predecessors, (59), 19 states have call successors, (19), 5 states have call predecessors, (19), 4 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) [2022-04-06 16:41:42,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 95 transitions. [2022-04-06 16:41:42,814 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 95 transitions. Word has length 39 [2022-04-06 16:41:42,814 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 16:41:42,814 INFO L478 AbstractCegarLoop]: Abstraction has 71 states and 95 transitions. [2022-04-06 16:41:42,815 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.625) internal successors, (21), 7 states have internal predecessors, (21), 3 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-04-06 16:41:42,815 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 95 transitions. [2022-04-06 16:41:42,815 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2022-04-06 16:41:42,815 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 16:41:42,815 INFO L499 BasicCegarLoop]: trace histogram [4, 4, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-06 16:41:42,832 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-04-06 16:41:43,031 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,SelfDestructingSolverStorable2 [2022-04-06 16:41:43,032 INFO L403 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 16:41:43,032 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 16:41:43,032 INFO L85 PathProgramCache]: Analyzing trace with hash -974923140, now seen corresponding path program 1 times [2022-04-06 16:41:43,032 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-06 16:41:43,032 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1059804500] [2022-04-06 16:41:43,033 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-04-06 16:41:43,033 INFO L85 PathProgramCache]: Analyzing trace with hash -974923140, now seen corresponding path program 2 times [2022-04-06 16:41:43,033 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 16:41:43,033 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1468673693] [2022-04-06 16:41:43,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 16:41:43,033 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 16:41:43,043 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-04-06 16:41:43,043 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1364614173] [2022-04-06 16:41:43,043 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-04-06 16:41:43,044 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 16:41:43,044 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-06 16:41:43,068 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) [2022-04-06 16:41:43,119 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-04-06 16:41:43,154 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-04-06 16:41:43,154 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-06 16:41:43,155 INFO L263 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 38 conjunts are in the unsatisfiable core [2022-04-06 16:41:43,157 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-06 16:41:43,435 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 6 proven. 10 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-04-06 16:41:43,435 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-06 16:41:43,615 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-04-06 16:41:43,619 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 16:41:43,619 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1468673693] [2022-04-06 16:41:43,619 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-04-06 16:41:43,619 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1364614173] [2022-04-06 16:41:43,620 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1364614173] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-06 16:41:43,620 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-04-06 16:41:43,620 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 9] total 18 [2022-04-06 16:41:43,620 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-06 16:41:43,620 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1059804500] [2022-04-06 16:41:43,620 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1059804500] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 16:41:43,620 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 16:41:43,620 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-04-06 16:41:43,620 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1035101359] [2022-04-06 16:41:43,620 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 16:41:43,620 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-04-06 16:41:43,622 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-06 16:41:43,622 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-04-06 16:41:43,622 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=246, Unknown=0, NotChecked=0, Total=306 [2022-04-06 16:41:43,622 INFO L87 Difference]: Start difference. First operand 71 states and 95 transitions. Second operand has 13 states, 12 states have (on average 2.0) internal successors, (24), 10 states have internal predecessors, (24), 4 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2022-04-06 16:41:43,911 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 16:41:43,911 INFO L93 Difference]: Finished difference Result 112 states and 151 transitions. [2022-04-06 16:41:43,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-04-06 16:41:43,912 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 2.0) internal successors, (24), 10 states have internal predecessors, (24), 4 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) Word has length 42 [2022-04-06 16:41:43,912 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 16:41:43,914 INFO L225 Difference]: With dead ends: 112 [2022-04-06 16:41:43,914 INFO L226 Difference]: Without dead ends: 110 [2022-04-06 16:41:43,916 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 66 SyntacticMatches, 1 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 81 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=96, Invalid=410, Unknown=0, NotChecked=0, Total=506 [2022-04-06 16:41:43,918 INFO L913 BasicCegarLoop]: 52 mSDtfsCounter, 63 mSDsluCounter, 245 mSDsCounter, 0 mSdLazyCounter, 432 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 297 SdHoareTripleChecker+Invalid, 469 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 432 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-04-06 16:41:43,919 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [72 Valid, 297 Invalid, 469 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 432 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-04-06 16:41:43,921 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2022-04-06 16:41:43,941 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 93. [2022-04-06 16:41:43,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 93 states, 63 states have (on average 1.2380952380952381) internal successors, (78), 64 states have internal predecessors, (78), 23 states have call successors, (23), 7 states have call predecessors, (23), 6 states have return successors, (21), 21 states have call predecessors, (21), 21 states have call successors, (21) [2022-04-06 16:41:43,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 122 transitions. [2022-04-06 16:41:43,943 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 122 transitions. Word has length 42 [2022-04-06 16:41:43,943 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 16:41:43,943 INFO L478 AbstractCegarLoop]: Abstraction has 93 states and 122 transitions. [2022-04-06 16:41:43,946 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 2.0) internal successors, (24), 10 states have internal predecessors, (24), 4 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2022-04-06 16:41:43,946 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 122 transitions. [2022-04-06 16:41:43,949 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-04-06 16:41:43,949 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 16:41:43,949 INFO L499 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-06 16:41:43,966 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-04-06 16:41:44,165 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 16:41:44,166 INFO L403 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 16:41:44,166 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 16:41:44,166 INFO L85 PathProgramCache]: Analyzing trace with hash 81990170, now seen corresponding path program 1 times [2022-04-06 16:41:44,166 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-06 16:41:44,166 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [264650350] [2022-04-06 16:41:44,167 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-04-06 16:41:44,167 INFO L85 PathProgramCache]: Analyzing trace with hash 81990170, now seen corresponding path program 2 times [2022-04-06 16:41:44,167 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 16:41:44,167 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [558256736] [2022-04-06 16:41:44,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 16:41:44,167 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 16:41:44,181 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-04-06 16:41:44,181 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2092135889] [2022-04-06 16:41:44,181 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-04-06 16:41:44,181 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 16:41:44,181 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-06 16:41:44,182 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) [2022-04-06 16:41:44,183 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-04-06 16:41:44,214 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-04-06 16:41:44,214 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-06 16:41:44,215 INFO L263 TraceCheckSpWp]: Trace formula consists of 135 conjuncts, 14 conjunts are in the unsatisfiable core [2022-04-06 16:41:44,216 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-06 16:41:44,343 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 7 proven. 6 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-04-06 16:41:44,343 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-06 16:41:44,440 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2022-04-06 16:41:44,441 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 16:41:44,441 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [558256736] [2022-04-06 16:41:44,441 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-04-06 16:41:44,441 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2092135889] [2022-04-06 16:41:44,441 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2092135889] provided 1 perfect and 1 imperfect interpolant sequences [2022-04-06 16:41:44,441 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-04-06 16:41:44,441 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [9] total 10 [2022-04-06 16:41:44,441 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-06 16:41:44,441 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [264650350] [2022-04-06 16:41:44,442 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [264650350] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 16:41:44,442 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 16:41:44,442 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-04-06 16:41:44,442 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1873338342] [2022-04-06 16:41:44,442 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 16:41:44,442 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-04-06 16:41:44,442 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-06 16:41:44,442 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-04-06 16:41:44,442 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-04-06 16:41:44,443 INFO L87 Difference]: Start difference. First operand 93 states and 122 transitions. Second operand has 5 states, 5 states have (on average 3.8) internal successors, (19), 4 states have internal predecessors, (19), 2 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-04-06 16:41:44,494 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 16:41:44,494 INFO L93 Difference]: Finished difference Result 130 states and 179 transitions. [2022-04-06 16:41:44,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-04-06 16:41:44,495 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.8) internal successors, (19), 4 states have internal predecessors, (19), 2 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 47 [2022-04-06 16:41:44,495 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 16:41:44,496 INFO L225 Difference]: With dead ends: 130 [2022-04-06 16:41:44,496 INFO L226 Difference]: Without dead ends: 128 [2022-04-06 16:41:44,496 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 84 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2022-04-06 16:41:44,497 INFO L913 BasicCegarLoop]: 42 mSDtfsCounter, 8 mSDsluCounter, 99 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 141 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-04-06 16:41:44,497 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [10 Valid, 141 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 52 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-04-06 16:41:44,497 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states. [2022-04-06 16:41:44,512 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 123. [2022-04-06 16:41:44,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 123 states, 76 states have (on average 1.263157894736842) internal successors, (96), 77 states have internal predecessors, (96), 39 states have call successors, (39), 8 states have call predecessors, (39), 7 states have return successors, (37), 37 states have call predecessors, (37), 37 states have call successors, (37) [2022-04-06 16:41:44,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 172 transitions. [2022-04-06 16:41:44,514 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 172 transitions. Word has length 47 [2022-04-06 16:41:44,514 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 16:41:44,514 INFO L478 AbstractCegarLoop]: Abstraction has 123 states and 172 transitions. [2022-04-06 16:41:44,514 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.8) internal successors, (19), 4 states have internal predecessors, (19), 2 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-04-06 16:41:44,514 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 172 transitions. [2022-04-06 16:41:44,515 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-04-06 16:41:44,515 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 16:41:44,515 INFO L499 BasicCegarLoop]: trace histogram [4, 4, 4, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-06 16:41:44,533 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-04-06 16:41:44,731 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 16:41:44,731 INFO L403 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 16:41:44,731 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 16:41:44,732 INFO L85 PathProgramCache]: Analyzing trace with hash 1524769911, now seen corresponding path program 1 times [2022-04-06 16:41:44,732 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-06 16:41:44,732 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [519460849] [2022-04-06 16:41:44,732 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-04-06 16:41:44,732 INFO L85 PathProgramCache]: Analyzing trace with hash 1524769911, now seen corresponding path program 2 times [2022-04-06 16:41:44,732 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 16:41:44,732 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1324246392] [2022-04-06 16:41:44,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 16:41:44,732 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 16:41:44,741 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-04-06 16:41:44,741 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1493393527] [2022-04-06 16:41:44,741 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-04-06 16:41:44,741 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 16:41:44,741 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-06 16:41:44,756 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) [2022-04-06 16:41:44,758 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-04-06 16:41:44,791 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-04-06 16:41:44,791 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-06 16:41:44,792 INFO L263 TraceCheckSpWp]: Trace formula consists of 148 conjuncts, 44 conjunts are in the unsatisfiable core [2022-04-06 16:41:44,793 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-06 16:41:45,165 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 11 proven. 4 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-04-06 16:41:45,165 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-06 16:41:45,326 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-04-06 16:41:45,326 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 16:41:45,327 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1324246392] [2022-04-06 16:41:45,327 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-04-06 16:41:45,327 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1493393527] [2022-04-06 16:41:45,327 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1493393527] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-06 16:41:45,327 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-04-06 16:41:45,327 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 8] total 17 [2022-04-06 16:41:45,327 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-06 16:41:45,327 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [519460849] [2022-04-06 16:41:45,327 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [519460849] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 16:41:45,327 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 16:41:45,328 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-04-06 16:41:45,328 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [396115663] [2022-04-06 16:41:45,328 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 16:41:45,328 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-04-06 16:41:45,328 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-06 16:41:45,328 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-04-06 16:41:45,329 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=219, Unknown=0, NotChecked=0, Total=272 [2022-04-06 16:41:45,329 INFO L87 Difference]: Start difference. First operand 123 states and 172 transitions. Second operand has 13 states, 11 states have (on average 2.4545454545454546) internal successors, (27), 9 states have internal predecessors, (27), 4 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (6), 5 states have call predecessors, (6), 4 states have call successors, (6) [2022-04-06 16:41:45,597 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 16:41:45,597 INFO L93 Difference]: Finished difference Result 137 states and 184 transitions. [2022-04-06 16:41:45,597 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-04-06 16:41:45,597 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 11 states have (on average 2.4545454545454546) internal successors, (27), 9 states have internal predecessors, (27), 4 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (6), 5 states have call predecessors, (6), 4 states have call successors, (6) Word has length 47 [2022-04-06 16:41:45,598 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 16:41:45,598 INFO L225 Difference]: With dead ends: 137 [2022-04-06 16:41:45,598 INFO L226 Difference]: Without dead ends: 135 [2022-04-06 16:41:45,599 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 77 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=83, Invalid=337, Unknown=0, NotChecked=0, Total=420 [2022-04-06 16:41:45,599 INFO L913 BasicCegarLoop]: 47 mSDtfsCounter, 66 mSDsluCounter, 192 mSDsCounter, 0 mSdLazyCounter, 320 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 79 SdHoareTripleChecker+Valid, 239 SdHoareTripleChecker+Invalid, 343 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 320 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-04-06 16:41:45,599 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [79 Valid, 239 Invalid, 343 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 320 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-04-06 16:41:45,600 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135 states. [2022-04-06 16:41:45,611 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135 to 131. [2022-04-06 16:41:45,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 131 states, 82 states have (on average 1.2439024390243902) internal successors, (102), 83 states have internal predecessors, (102), 39 states have call successors, (39), 10 states have call predecessors, (39), 9 states have return successors, (37), 37 states have call predecessors, (37), 37 states have call successors, (37) [2022-04-06 16:41:45,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 178 transitions. [2022-04-06 16:41:45,612 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 178 transitions. Word has length 47 [2022-04-06 16:41:45,613 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 16:41:45,613 INFO L478 AbstractCegarLoop]: Abstraction has 131 states and 178 transitions. [2022-04-06 16:41:45,613 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 11 states have (on average 2.4545454545454546) internal successors, (27), 9 states have internal predecessors, (27), 4 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (6), 5 states have call predecessors, (6), 4 states have call successors, (6) [2022-04-06 16:41:45,613 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 178 transitions. [2022-04-06 16:41:45,613 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-04-06 16:41:45,613 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 16:41:45,613 INFO L499 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-06 16:41:45,629 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-04-06 16:41:45,829 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 16:41:45,830 INFO L403 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 16:41:45,830 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 16:41:45,830 INFO L85 PathProgramCache]: Analyzing trace with hash 1836145722, now seen corresponding path program 3 times [2022-04-06 16:41:45,830 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-06 16:41:45,830 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1524642278] [2022-04-06 16:41:45,831 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-04-06 16:41:45,831 INFO L85 PathProgramCache]: Analyzing trace with hash 1836145722, now seen corresponding path program 4 times [2022-04-06 16:41:45,831 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 16:41:45,831 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1952507783] [2022-04-06 16:41:45,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 16:41:45,831 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 16:41:45,839 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-04-06 16:41:45,839 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1741207059] [2022-04-06 16:41:45,839 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-04-06 16:41:45,839 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 16:41:45,839 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-06 16:41:45,840 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) [2022-04-06 16:41:45,841 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-04-06 16:41:45,872 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-04-06 16:41:45,872 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-06 16:41:45,873 INFO L263 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 5 conjunts are in the unsatisfiable core [2022-04-06 16:41:45,874 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-06 16:41:45,931 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-04-06 16:41:45,931 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-04-06 16:41:45,931 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 16:41:45,931 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1952507783] [2022-04-06 16:41:45,932 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-04-06 16:41:45,932 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1741207059] [2022-04-06 16:41:45,932 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1741207059] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 16:41:45,932 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 16:41:45,932 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-04-06 16:41:45,932 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-06 16:41:45,932 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1524642278] [2022-04-06 16:41:45,932 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1524642278] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 16:41:45,932 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 16:41:45,932 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-04-06 16:41:45,932 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1841059307] [2022-04-06 16:41:45,932 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 16:41:45,933 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-04-06 16:41:45,933 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-06 16:41:45,933 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-04-06 16:41:45,934 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-04-06 16:41:45,934 INFO L87 Difference]: Start difference. First operand 131 states and 178 transitions. Second operand has 5 states, 5 states have (on average 5.2) internal successors, (26), 5 states have internal predecessors, (26), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2022-04-06 16:41:46,040 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 16:41:46,040 INFO L93 Difference]: Finished difference Result 170 states and 230 transitions. [2022-04-06 16:41:46,040 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-04-06 16:41:46,041 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.2) internal successors, (26), 5 states have internal predecessors, (26), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 47 [2022-04-06 16:41:46,041 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 16:41:46,041 INFO L225 Difference]: With dead ends: 170 [2022-04-06 16:41:46,041 INFO L226 Difference]: Without dead ends: 114 [2022-04-06 16:41:46,042 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-04-06 16:41:46,042 INFO L913 BasicCegarLoop]: 57 mSDtfsCounter, 18 mSDsluCounter, 98 mSDsCounter, 0 mSdLazyCounter, 82 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 155 SdHoareTripleChecker+Invalid, 91 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 82 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-04-06 16:41:46,043 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [22 Valid, 155 Invalid, 91 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 82 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-04-06 16:41:46,043 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2022-04-06 16:41:46,052 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 106. [2022-04-06 16:41:46,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 106 states, 65 states have (on average 1.1846153846153846) internal successors, (77), 66 states have internal predecessors, (77), 31 states have call successors, (31), 10 states have call predecessors, (31), 9 states have return successors, (29), 29 states have call predecessors, (29), 29 states have call successors, (29) [2022-04-06 16:41:46,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 137 transitions. [2022-04-06 16:41:46,053 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 137 transitions. Word has length 47 [2022-04-06 16:41:46,053 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 16:41:46,053 INFO L478 AbstractCegarLoop]: Abstraction has 106 states and 137 transitions. [2022-04-06 16:41:46,053 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.2) internal successors, (26), 5 states have internal predecessors, (26), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2022-04-06 16:41:46,053 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 137 transitions. [2022-04-06 16:41:46,053 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2022-04-06 16:41:46,054 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 16:41:46,054 INFO L499 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-06 16:41:46,069 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2022-04-06 16:41:46,269 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 16:41:46,269 INFO L403 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 16:41:46,270 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 16:41:46,270 INFO L85 PathProgramCache]: Analyzing trace with hash -1952108775, now seen corresponding path program 1 times [2022-04-06 16:41:46,270 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-06 16:41:46,270 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [478171633] [2022-04-06 16:41:46,270 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-04-06 16:41:46,270 INFO L85 PathProgramCache]: Analyzing trace with hash -1952108775, now seen corresponding path program 2 times [2022-04-06 16:41:46,270 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 16:41:46,270 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [597062197] [2022-04-06 16:41:46,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 16:41:46,271 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 16:41:46,278 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-04-06 16:41:46,278 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [583911269] [2022-04-06 16:41:46,278 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-04-06 16:41:46,278 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 16:41:46,278 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-06 16:41:46,279 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) [2022-04-06 16:41:46,280 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-04-06 16:41:46,315 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-04-06 16:41:46,315 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-06 16:41:46,316 INFO L263 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 7 conjunts are in the unsatisfiable core [2022-04-06 16:41:46,317 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-06 16:41:46,390 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2022-04-06 16:41:46,390 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-04-06 16:41:46,390 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 16:41:46,390 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [597062197] [2022-04-06 16:41:46,390 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-04-06 16:41:46,390 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [583911269] [2022-04-06 16:41:46,391 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [583911269] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 16:41:46,391 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 16:41:46,391 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-04-06 16:41:46,391 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-06 16:41:46,391 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [478171633] [2022-04-06 16:41:46,391 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [478171633] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 16:41:46,391 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 16:41:46,391 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-04-06 16:41:46,391 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1589774041] [2022-04-06 16:41:46,391 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 16:41:46,391 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-04-06 16:41:46,391 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-06 16:41:46,392 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-04-06 16:41:46,392 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-04-06 16:41:46,392 INFO L87 Difference]: Start difference. First operand 106 states and 137 transitions. Second operand has 5 states, 5 states have (on average 3.8) internal successors, (19), 4 states have internal predecessors, (19), 2 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-04-06 16:41:46,436 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 16:41:46,436 INFO L93 Difference]: Finished difference Result 158 states and 221 transitions. [2022-04-06 16:41:46,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-04-06 16:41:46,437 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.8) internal successors, (19), 4 states have internal predecessors, (19), 2 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 52 [2022-04-06 16:41:46,437 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 16:41:46,438 INFO L225 Difference]: With dead ends: 158 [2022-04-06 16:41:46,438 INFO L226 Difference]: Without dead ends: 156 [2022-04-06 16:41:46,439 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-04-06 16:41:46,439 INFO L913 BasicCegarLoop]: 46 mSDtfsCounter, 9 mSDsluCounter, 110 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 156 SdHoareTripleChecker+Invalid, 50 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-04-06 16:41:46,439 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [10 Valid, 156 Invalid, 50 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-04-06 16:41:46,440 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 156 states. [2022-04-06 16:41:46,456 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 156 to 140. [2022-04-06 16:41:46,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 140 states, 74 states have (on average 1.162162162162162) internal successors, (86), 81 states have internal predecessors, (86), 55 states have call successors, (55), 11 states have call predecessors, (55), 10 states have return successors, (53), 47 states have call predecessors, (53), 53 states have call successors, (53) [2022-04-06 16:41:46,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 194 transitions. [2022-04-06 16:41:46,458 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 194 transitions. Word has length 52 [2022-04-06 16:41:46,461 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 16:41:46,461 INFO L478 AbstractCegarLoop]: Abstraction has 140 states and 194 transitions. [2022-04-06 16:41:46,461 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.8) internal successors, (19), 4 states have internal predecessors, (19), 2 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-04-06 16:41:46,461 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 194 transitions. [2022-04-06 16:41:46,465 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2022-04-06 16:41:46,465 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 16:41:46,465 INFO L499 BasicCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-06 16:41:46,483 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2022-04-06 16:41:46,683 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 16:41:46,683 INFO L403 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 16:41:46,684 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 16:41:46,684 INFO L85 PathProgramCache]: Analyzing trace with hash 188363668, now seen corresponding path program 1 times [2022-04-06 16:41:46,684 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-06 16:41:46,684 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [684599881] [2022-04-06 16:41:46,684 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-04-06 16:41:46,684 INFO L85 PathProgramCache]: Analyzing trace with hash 188363668, now seen corresponding path program 2 times [2022-04-06 16:41:46,684 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 16:41:46,684 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [817192197] [2022-04-06 16:41:46,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 16:41:46,685 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 16:41:46,693 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-04-06 16:41:46,693 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1285931042] [2022-04-06 16:41:46,693 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-04-06 16:41:46,693 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 16:41:46,693 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-06 16:41:46,700 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) [2022-04-06 16:41:46,701 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-04-06 16:41:46,738 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-04-06 16:41:46,739 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-06 16:41:46,739 INFO L263 TraceCheckSpWp]: Trace formula consists of 177 conjuncts, 57 conjunts are in the unsatisfiable core [2022-04-06 16:41:46,741 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-06 16:41:47,247 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 6 proven. 18 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2022-04-06 16:41:47,247 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-06 16:41:47,970 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 8 proven. 16 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2022-04-06 16:41:47,970 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 16:41:47,970 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [817192197] [2022-04-06 16:41:47,970 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-04-06 16:41:47,970 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1285931042] [2022-04-06 16:41:47,970 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1285931042] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-06 16:41:47,970 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-04-06 16:41:47,970 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 21 [2022-04-06 16:41:47,971 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-06 16:41:47,971 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [684599881] [2022-04-06 16:41:47,971 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [684599881] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 16:41:47,971 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 16:41:47,971 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-04-06 16:41:47,971 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [477170212] [2022-04-06 16:41:47,971 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 16:41:47,971 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-04-06 16:41:47,971 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-06 16:41:47,971 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-04-06 16:41:47,972 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=349, Unknown=0, NotChecked=0, Total=420 [2022-04-06 16:41:47,972 INFO L87 Difference]: Start difference. First operand 140 states and 194 transitions. Second operand has 13 states, 12 states have (on average 2.4166666666666665) internal successors, (29), 12 states have internal predecessors, (29), 4 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (9), 2 states have call predecessors, (9), 3 states have call successors, (9) [2022-04-06 16:41:48,369 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 16:41:48,369 INFO L93 Difference]: Finished difference Result 200 states and 283 transitions. [2022-04-06 16:41:48,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-04-06 16:41:48,371 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 2.4166666666666665) internal successors, (29), 12 states have internal predecessors, (29), 4 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (9), 2 states have call predecessors, (9), 3 states have call successors, (9) Word has length 64 [2022-04-06 16:41:48,371 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 16:41:48,373 INFO L225 Difference]: With dead ends: 200 [2022-04-06 16:41:48,373 INFO L226 Difference]: Without dead ends: 197 [2022-04-06 16:41:48,374 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 131 GetRequests, 107 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 94 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=97, Invalid=503, Unknown=0, NotChecked=0, Total=600 [2022-04-06 16:41:48,374 INFO L913 BasicCegarLoop]: 45 mSDtfsCounter, 48 mSDsluCounter, 263 mSDsCounter, 0 mSdLazyCounter, 621 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 64 SdHoareTripleChecker+Valid, 308 SdHoareTripleChecker+Invalid, 653 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 621 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-04-06 16:41:48,374 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [64 Valid, 308 Invalid, 653 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 621 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-04-06 16:41:48,374 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 197 states. [2022-04-06 16:41:48,393 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 197 to 193. [2022-04-06 16:41:48,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 193 states, 101 states have (on average 1.1782178217821782) internal successors, (119), 110 states have internal predecessors, (119), 79 states have call successors, (79), 13 states have call predecessors, (79), 12 states have return successors, (77), 69 states have call predecessors, (77), 77 states have call successors, (77) [2022-04-06 16:41:48,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 193 states to 193 states and 275 transitions. [2022-04-06 16:41:48,395 INFO L78 Accepts]: Start accepts. Automaton has 193 states and 275 transitions. Word has length 64 [2022-04-06 16:41:48,395 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 16:41:48,395 INFO L478 AbstractCegarLoop]: Abstraction has 193 states and 275 transitions. [2022-04-06 16:41:48,395 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 2.4166666666666665) internal successors, (29), 12 states have internal predecessors, (29), 4 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (9), 2 states have call predecessors, (9), 3 states have call successors, (9) [2022-04-06 16:41:48,396 INFO L276 IsEmpty]: Start isEmpty. Operand 193 states and 275 transitions. [2022-04-06 16:41:48,396 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-04-06 16:41:48,396 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 16:41:48,396 INFO L499 BasicCegarLoop]: trace histogram [5, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-06 16:41:48,414 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2022-04-06 16:41:48,599 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,SelfDestructingSolverStorable8 [2022-04-06 16:41:48,599 INFO L403 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 16:41:48,600 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 16:41:48,600 INFO L85 PathProgramCache]: Analyzing trace with hash -368004398, now seen corresponding path program 3 times [2022-04-06 16:41:48,600 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-06 16:41:48,600 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1541218383] [2022-04-06 16:41:48,600 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-04-06 16:41:48,600 INFO L85 PathProgramCache]: Analyzing trace with hash -368004398, now seen corresponding path program 4 times [2022-04-06 16:41:48,601 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 16:41:48,601 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1439605593] [2022-04-06 16:41:48,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 16:41:48,601 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 16:41:48,637 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-04-06 16:41:48,637 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [932908587] [2022-04-06 16:41:48,637 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-04-06 16:41:48,638 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 16:41:48,638 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-06 16:41:48,640 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) [2022-04-06 16:41:48,641 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-04-06 16:41:48,676 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-04-06 16:41:48,676 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-06 16:41:48,677 INFO L263 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 8 conjunts are in the unsatisfiable core [2022-04-06 16:41:48,678 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-06 16:41:48,781 INFO L134 CoverageAnalysis]: Checked inductivity of 69 backedges. 16 proven. 5 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2022-04-06 16:41:48,782 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-06 16:41:48,872 INFO L134 CoverageAnalysis]: Checked inductivity of 69 backedges. 16 proven. 5 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2022-04-06 16:41:48,873 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 16:41:48,873 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1439605593] [2022-04-06 16:41:48,873 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-04-06 16:41:48,873 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [932908587] [2022-04-06 16:41:48,873 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [932908587] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-06 16:41:48,873 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-04-06 16:41:48,873 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 8 [2022-04-06 16:41:48,873 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-06 16:41:48,873 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1541218383] [2022-04-06 16:41:48,874 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1541218383] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 16:41:48,874 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 16:41:48,874 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-04-06 16:41:48,874 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1278453035] [2022-04-06 16:41:48,874 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 16:41:48,874 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-04-06 16:41:48,874 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-06 16:41:48,874 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-04-06 16:41:48,874 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-04-06 16:41:48,874 INFO L87 Difference]: Start difference. First operand 193 states and 275 transitions. Second operand has 8 states, 8 states have (on average 3.875) internal successors, (31), 8 states have internal predecessors, (31), 3 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2022-04-06 16:41:49,148 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 16:41:49,148 INFO L93 Difference]: Finished difference Result 288 states and 424 transitions. [2022-04-06 16:41:49,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-04-06 16:41:49,149 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 3.875) internal successors, (31), 8 states have internal predecessors, (31), 3 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 69 [2022-04-06 16:41:49,149 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 16:41:49,151 INFO L225 Difference]: With dead ends: 288 [2022-04-06 16:41:49,151 INFO L226 Difference]: Without dead ends: 281 [2022-04-06 16:41:49,151 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 153 GetRequests, 134 SyntacticMatches, 2 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=93, Invalid=249, Unknown=0, NotChecked=0, Total=342 [2022-04-06 16:41:49,152 INFO L913 BasicCegarLoop]: 87 mSDtfsCounter, 48 mSDsluCounter, 231 mSDsCounter, 0 mSdLazyCounter, 278 mSolverCounterSat, 84 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 318 SdHoareTripleChecker+Invalid, 362 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 84 IncrementalHoareTripleChecker+Valid, 278 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-04-06 16:41:49,152 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [52 Valid, 318 Invalid, 362 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [84 Valid, 278 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-04-06 16:41:49,152 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 281 states. [2022-04-06 16:41:49,188 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 281 to 208. [2022-04-06 16:41:49,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 208 states, 116 states have (on average 1.206896551724138) internal successors, (140), 122 states have internal predecessors, (140), 79 states have call successors, (79), 13 states have call predecessors, (79), 12 states have return successors, (77), 72 states have call predecessors, (77), 77 states have call successors, (77) [2022-04-06 16:41:49,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 208 states to 208 states and 296 transitions. [2022-04-06 16:41:49,190 INFO L78 Accepts]: Start accepts. Automaton has 208 states and 296 transitions. Word has length 69 [2022-04-06 16:41:49,190 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 16:41:49,190 INFO L478 AbstractCegarLoop]: Abstraction has 208 states and 296 transitions. [2022-04-06 16:41:49,190 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 3.875) internal successors, (31), 8 states have internal predecessors, (31), 3 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2022-04-06 16:41:49,190 INFO L276 IsEmpty]: Start isEmpty. Operand 208 states and 296 transitions. [2022-04-06 16:41:49,190 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-04-06 16:41:49,190 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 16:41:49,191 INFO L499 BasicCegarLoop]: trace histogram [8, 7, 7, 4, 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, 1, 1, 1, 1, 1, 1] [2022-04-06 16:41:49,220 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-04-06 16:41:49,419 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-04-06 16:41:49,420 INFO L403 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 16:41:49,420 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 16:41:49,420 INFO L85 PathProgramCache]: Analyzing trace with hash -298771846, now seen corresponding path program 1 times [2022-04-06 16:41:49,420 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-06 16:41:49,420 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1475320762] [2022-04-06 16:41:49,420 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-04-06 16:41:49,420 INFO L85 PathProgramCache]: Analyzing trace with hash -298771846, now seen corresponding path program 2 times [2022-04-06 16:41:49,420 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 16:41:49,420 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [271520808] [2022-04-06 16:41:49,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 16:41:49,421 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 16:41:49,427 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-04-06 16:41:49,428 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [966631523] [2022-04-06 16:41:49,428 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-04-06 16:41:49,428 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 16:41:49,428 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-06 16:41:49,446 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-06 16:41:49,448 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-04-06 16:41:49,484 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-04-06 16:41:49,484 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-06 16:41:49,485 INFO L263 TraceCheckSpWp]: Trace formula consists of 186 conjuncts, 27 conjunts are in the unsatisfiable core [2022-04-06 16:41:49,486 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-06 16:41:49,794 INFO L134 CoverageAnalysis]: Checked inductivity of 127 backedges. 14 proven. 17 refuted. 0 times theorem prover too weak. 96 trivial. 0 not checked. [2022-04-06 16:41:49,794 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-06 16:41:49,940 INFO L134 CoverageAnalysis]: Checked inductivity of 127 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 108 trivial. 0 not checked. [2022-04-06 16:41:49,940 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 16:41:49,940 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [271520808] [2022-04-06 16:41:49,941 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-04-06 16:41:49,941 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [966631523] [2022-04-06 16:41:49,941 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [966631523] provided 1 perfect and 1 imperfect interpolant sequences [2022-04-06 16:41:49,941 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-04-06 16:41:49,941 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [12] total 14 [2022-04-06 16:41:49,941 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-06 16:41:49,941 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1475320762] [2022-04-06 16:41:49,941 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1475320762] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 16:41:49,941 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 16:41:49,941 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-04-06 16:41:49,941 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1166386218] [2022-04-06 16:41:49,942 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 16:41:49,942 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-04-06 16:41:49,942 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-06 16:41:49,942 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-04-06 16:41:49,942 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2022-04-06 16:41:49,943 INFO L87 Difference]: Start difference. First operand 208 states and 296 transitions. Second operand has 6 states, 6 states have (on average 3.5) internal successors, (21), 5 states have internal predecessors, (21), 3 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2022-04-06 16:41:49,998 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 16:41:49,998 INFO L93 Difference]: Finished difference Result 214 states and 301 transitions. [2022-04-06 16:41:49,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-04-06 16:41:49,999 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.5) internal successors, (21), 5 states have internal predecessors, (21), 3 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) Word has length 74 [2022-04-06 16:41:49,999 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 16:41:50,001 INFO L225 Difference]: With dead ends: 214 [2022-04-06 16:41:50,001 INFO L226 Difference]: Without dead ends: 212 [2022-04-06 16:41:50,001 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 134 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=174, Unknown=0, NotChecked=0, Total=210 [2022-04-06 16:41:50,002 INFO L913 BasicCegarLoop]: 42 mSDtfsCounter, 13 mSDsluCounter, 97 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 139 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-04-06 16:41:50,002 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [14 Valid, 139 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-04-06 16:41:50,002 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 212 states. [2022-04-06 16:41:50,050 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 212 to 212. [2022-04-06 16:41:50,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 212 states, 119 states have (on average 1.2016806722689075) internal successors, (143), 125 states have internal predecessors, (143), 79 states have call successors, (79), 14 states have call predecessors, (79), 13 states have return successors, (77), 72 states have call predecessors, (77), 77 states have call successors, (77) [2022-04-06 16:41:50,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 212 states to 212 states and 299 transitions. [2022-04-06 16:41:50,052 INFO L78 Accepts]: Start accepts. Automaton has 212 states and 299 transitions. Word has length 74 [2022-04-06 16:41:50,053 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 16:41:50,053 INFO L478 AbstractCegarLoop]: Abstraction has 212 states and 299 transitions. [2022-04-06 16:41:50,053 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.5) internal successors, (21), 5 states have internal predecessors, (21), 3 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2022-04-06 16:41:50,053 INFO L276 IsEmpty]: Start isEmpty. Operand 212 states and 299 transitions. [2022-04-06 16:41:50,053 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-04-06 16:41:50,053 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 16:41:50,054 INFO L499 BasicCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-06 16:41:50,072 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-04-06 16:41:50,269 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2022-04-06 16:41:50,270 INFO L403 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 16:41:50,270 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 16:41:50,270 INFO L85 PathProgramCache]: Analyzing trace with hash -2089538094, now seen corresponding path program 1 times [2022-04-06 16:41:50,270 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-06 16:41:50,270 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [327174915] [2022-04-06 16:41:50,270 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-04-06 16:41:50,270 INFO L85 PathProgramCache]: Analyzing trace with hash -2089538094, now seen corresponding path program 2 times [2022-04-06 16:41:50,271 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 16:41:50,271 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1842348390] [2022-04-06 16:41:50,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 16:41:50,271 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 16:41:50,278 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-04-06 16:41:50,278 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [81027055] [2022-04-06 16:41:50,278 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-04-06 16:41:50,278 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 16:41:50,278 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-06 16:41:50,292 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-06 16:41:50,293 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-04-06 16:41:50,340 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-04-06 16:41:50,340 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-06 16:41:50,341 INFO L263 TraceCheckSpWp]: Trace formula consists of 209 conjuncts, 12 conjunts are in the unsatisfiable core [2022-04-06 16:41:50,356 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-06 16:41:50,558 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 30 proven. 6 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2022-04-06 16:41:50,558 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-06 16:41:50,720 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 26 proven. 10 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2022-04-06 16:41:50,721 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 16:41:50,721 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1842348390] [2022-04-06 16:41:50,721 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-04-06 16:41:50,721 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [81027055] [2022-04-06 16:41:50,721 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [81027055] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-06 16:41:50,721 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-04-06 16:41:50,721 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 16 [2022-04-06 16:41:50,721 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-06 16:41:50,721 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [327174915] [2022-04-06 16:41:50,721 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [327174915] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 16:41:50,721 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 16:41:50,721 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-04-06 16:41:50,721 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1228175221] [2022-04-06 16:41:50,721 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 16:41:50,722 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-04-06 16:41:50,722 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-06 16:41:50,722 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-04-06 16:41:50,722 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=201, Unknown=0, NotChecked=0, Total=240 [2022-04-06 16:41:50,722 INFO L87 Difference]: Start difference. First operand 212 states and 299 transitions. Second operand has 10 states, 10 states have (on average 3.6) internal successors, (36), 9 states have internal predecessors, (36), 4 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2022-04-06 16:41:50,947 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 16:41:50,947 INFO L93 Difference]: Finished difference Result 306 states and 427 transitions. [2022-04-06 16:41:50,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-04-06 16:41:50,947 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.6) internal successors, (36), 9 states have internal predecessors, (36), 4 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) Word has length 72 [2022-04-06 16:41:50,947 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 16:41:50,949 INFO L225 Difference]: With dead ends: 306 [2022-04-06 16:41:50,949 INFO L226 Difference]: Without dead ends: 204 [2022-04-06 16:41:50,952 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 128 SyntacticMatches, 1 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=102, Invalid=404, Unknown=0, NotChecked=0, Total=506 [2022-04-06 16:41:50,954 INFO L913 BasicCegarLoop]: 52 mSDtfsCounter, 39 mSDsluCounter, 201 mSDsCounter, 0 mSdLazyCounter, 254 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 253 SdHoareTripleChecker+Invalid, 299 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 254 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-04-06 16:41:50,954 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [39 Valid, 253 Invalid, 299 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 254 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-04-06 16:41:50,955 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 204 states. [2022-04-06 16:41:50,986 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 204 to 200. [2022-04-06 16:41:50,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 200 states, 107 states have (on average 1.1682242990654206) internal successors, (125), 113 states have internal predecessors, (125), 79 states have call successors, (79), 14 states have call predecessors, (79), 13 states have return successors, (77), 72 states have call predecessors, (77), 77 states have call successors, (77) [2022-04-06 16:41:50,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 200 states to 200 states and 281 transitions. [2022-04-06 16:41:50,988 INFO L78 Accepts]: Start accepts. Automaton has 200 states and 281 transitions. Word has length 72 [2022-04-06 16:41:50,988 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 16:41:50,988 INFO L478 AbstractCegarLoop]: Abstraction has 200 states and 281 transitions. [2022-04-06 16:41:50,988 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 3.6) internal successors, (36), 9 states have internal predecessors, (36), 4 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2022-04-06 16:41:50,988 INFO L276 IsEmpty]: Start isEmpty. Operand 200 states and 281 transitions. [2022-04-06 16:41:50,991 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2022-04-06 16:41:50,991 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 16:41:50,991 INFO L499 BasicCegarLoop]: trace histogram [9, 8, 8, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-06 16:41:51,023 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-04-06 16:41:51,207 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2022-04-06 16:41:51,207 INFO L403 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 16:41:51,207 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 16:41:51,207 INFO L85 PathProgramCache]: Analyzing trace with hash -1679616651, now seen corresponding path program 1 times [2022-04-06 16:41:51,208 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-06 16:41:51,208 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [2127127246] [2022-04-06 16:41:51,208 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-04-06 16:41:51,208 INFO L85 PathProgramCache]: Analyzing trace with hash -1679616651, now seen corresponding path program 2 times [2022-04-06 16:41:51,208 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 16:41:51,208 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [542140031] [2022-04-06 16:41:51,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 16:41:51,208 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 16:41:51,218 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-04-06 16:41:51,218 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1407302373] [2022-04-06 16:41:51,218 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-04-06 16:41:51,218 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 16:41:51,218 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-06 16:41:51,225 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-06 16:41:51,226 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-04-06 16:41:51,276 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-04-06 16:41:51,276 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-06 16:41:51,277 INFO L263 TraceCheckSpWp]: Trace formula consists of 219 conjuncts, 63 conjunts are in the unsatisfiable core [2022-04-06 16:41:51,279 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-06 16:41:52,123 INFO L134 CoverageAnalysis]: Checked inductivity of 162 backedges. 30 proven. 26 refuted. 0 times theorem prover too weak. 106 trivial. 0 not checked. [2022-04-06 16:41:52,124 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-06 16:41:57,648 INFO L134 CoverageAnalysis]: Checked inductivity of 162 backedges. 30 proven. 17 refuted. 0 times theorem prover too weak. 115 trivial. 0 not checked. [2022-04-06 16:41:57,648 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 16:41:57,648 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [542140031] [2022-04-06 16:41:57,648 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-04-06 16:41:57,648 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1407302373] [2022-04-06 16:41:57,648 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1407302373] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-06 16:41:57,649 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-04-06 16:41:57,649 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 15] total 27 [2022-04-06 16:41:57,649 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-06 16:41:57,649 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [2127127246] [2022-04-06 16:41:57,649 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [2127127246] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 16:41:57,649 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 16:41:57,649 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2022-04-06 16:41:57,649 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1501490202] [2022-04-06 16:41:57,649 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 16:41:57,649 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-04-06 16:41:57,649 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-06 16:41:57,650 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-04-06 16:41:57,650 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=111, Invalid=591, Unknown=0, NotChecked=0, Total=702 [2022-04-06 16:41:57,650 INFO L87 Difference]: Start difference. First operand 200 states and 281 transitions. Second operand has 17 states, 16 states have (on average 2.125) internal successors, (34), 16 states have internal predecessors, (34), 5 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 4 states have call predecessors, (13), 4 states have call successors, (13) [2022-04-06 16:41:58,364 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 16:41:58,365 INFO L93 Difference]: Finished difference Result 285 states and 397 transitions. [2022-04-06 16:41:58,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-04-06 16:41:58,365 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 2.125) internal successors, (34), 16 states have internal predecessors, (34), 5 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 4 states have call predecessors, (13), 4 states have call successors, (13) Word has length 86 [2022-04-06 16:41:58,365 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 16:41:58,366 INFO L225 Difference]: With dead ends: 285 [2022-04-06 16:41:58,366 INFO L226 Difference]: Without dead ends: 231 [2022-04-06 16:41:58,367 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 179 GetRequests, 145 SyntacticMatches, 1 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 246 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=190, Invalid=1000, Unknown=0, NotChecked=0, Total=1190 [2022-04-06 16:41:58,367 INFO L913 BasicCegarLoop]: 35 mSDtfsCounter, 59 mSDsluCounter, 190 mSDsCounter, 0 mSdLazyCounter, 727 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 67 SdHoareTripleChecker+Valid, 225 SdHoareTripleChecker+Invalid, 782 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 727 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-04-06 16:41:58,367 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [67 Valid, 225 Invalid, 782 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [55 Valid, 727 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-04-06 16:41:58,368 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 231 states. [2022-04-06 16:41:58,410 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 231 to 228. [2022-04-06 16:41:58,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 228 states, 121 states have (on average 1.165289256198347) internal successors, (141), 128 states have internal predecessors, (141), 91 states have call successors, (91), 16 states have call predecessors, (91), 15 states have return successors, (89), 83 states have call predecessors, (89), 89 states have call successors, (89) [2022-04-06 16:41:58,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 228 states to 228 states and 321 transitions. [2022-04-06 16:41:58,412 INFO L78 Accepts]: Start accepts. Automaton has 228 states and 321 transitions. Word has length 86 [2022-04-06 16:41:58,412 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 16:41:58,412 INFO L478 AbstractCegarLoop]: Abstraction has 228 states and 321 transitions. [2022-04-06 16:41:58,412 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 16 states have (on average 2.125) internal successors, (34), 16 states have internal predecessors, (34), 5 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 4 states have call predecessors, (13), 4 states have call successors, (13) [2022-04-06 16:41:58,413 INFO L276 IsEmpty]: Start isEmpty. Operand 228 states and 321 transitions. [2022-04-06 16:41:58,413 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2022-04-06 16:41:58,413 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 16:41:58,413 INFO L499 BasicCegarLoop]: trace histogram [9, 8, 8, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-06 16:41:58,430 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2022-04-06 16:41:58,627 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2022-04-06 16:41:58,627 INFO L403 AbstractCegarLoop]: === Iteration 14 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 16:41:58,628 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 16:41:58,628 INFO L85 PathProgramCache]: Analyzing trace with hash -1654964248, now seen corresponding path program 5 times [2022-04-06 16:41:58,628 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-06 16:41:58,628 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [322288034] [2022-04-06 16:41:58,629 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-04-06 16:41:58,629 INFO L85 PathProgramCache]: Analyzing trace with hash -1654964248, now seen corresponding path program 6 times [2022-04-06 16:41:58,629 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 16:41:58,629 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [275093313] [2022-04-06 16:41:58,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 16:41:58,629 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 16:41:58,638 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-04-06 16:41:58,639 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2003184725] [2022-04-06 16:41:58,639 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-04-06 16:41:58,639 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 16:41:58,639 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-06 16:41:58,644 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-06 16:41:58,647 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-04-06 16:41:58,694 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2022-04-06 16:41:58,694 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-06 16:41:58,695 INFO L263 TraceCheckSpWp]: Trace formula consists of 225 conjuncts, 7 conjunts are in the unsatisfiable core [2022-04-06 16:41:58,696 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-06 16:41:58,826 INFO L134 CoverageAnalysis]: Checked inductivity of 167 backedges. 22 proven. 9 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2022-04-06 16:41:58,827 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-06 16:41:58,950 INFO L134 CoverageAnalysis]: Checked inductivity of 167 backedges. 22 proven. 9 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2022-04-06 16:41:58,951 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 16:41:58,951 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [275093313] [2022-04-06 16:41:58,951 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-04-06 16:41:58,951 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2003184725] [2022-04-06 16:41:58,951 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2003184725] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-06 16:41:58,951 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-04-06 16:41:58,951 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 9 [2022-04-06 16:41:58,951 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-06 16:41:58,951 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [322288034] [2022-04-06 16:41:58,951 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [322288034] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 16:41:58,951 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 16:41:58,951 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-04-06 16:41:58,951 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [194806104] [2022-04-06 16:41:58,951 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 16:41:58,952 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-04-06 16:41:58,952 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-06 16:41:58,952 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-04-06 16:41:58,952 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2022-04-06 16:41:58,952 INFO L87 Difference]: Start difference. First operand 228 states and 321 transitions. Second operand has 8 states, 8 states have (on average 3.875) internal successors, (31), 8 states have internal predecessors, (31), 4 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2022-04-06 16:41:59,043 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 16:41:59,044 INFO L93 Difference]: Finished difference Result 361 states and 505 transitions. [2022-04-06 16:41:59,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-04-06 16:41:59,044 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 3.875) internal successors, (31), 8 states have internal predecessors, (31), 4 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) Word has length 89 [2022-04-06 16:41:59,044 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 16:41:59,045 INFO L225 Difference]: With dead ends: 361 [2022-04-06 16:41:59,045 INFO L226 Difference]: Without dead ends: 238 [2022-04-06 16:41:59,046 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 179 GetRequests, 170 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2022-04-06 16:41:59,046 INFO L913 BasicCegarLoop]: 49 mSDtfsCounter, 7 mSDsluCounter, 211 mSDsCounter, 0 mSdLazyCounter, 110 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 260 SdHoareTripleChecker+Invalid, 115 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 110 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-04-06 16:41:59,046 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [7 Valid, 260 Invalid, 115 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 110 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-04-06 16:41:59,046 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 238 states. [2022-04-06 16:41:59,072 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 238 to 225. [2022-04-06 16:41:59,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 225 states, 126 states have (on average 1.1825396825396826) internal successors, (149), 127 states have internal predecessors, (149), 83 states have call successors, (83), 16 states have call predecessors, (83), 15 states have return successors, (81), 81 states have call predecessors, (81), 81 states have call successors, (81) [2022-04-06 16:41:59,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 225 states to 225 states and 313 transitions. [2022-04-06 16:41:59,074 INFO L78 Accepts]: Start accepts. Automaton has 225 states and 313 transitions. Word has length 89 [2022-04-06 16:41:59,074 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 16:41:59,074 INFO L478 AbstractCegarLoop]: Abstraction has 225 states and 313 transitions. [2022-04-06 16:41:59,074 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 3.875) internal successors, (31), 8 states have internal predecessors, (31), 4 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2022-04-06 16:41:59,074 INFO L276 IsEmpty]: Start isEmpty. Operand 225 states and 313 transitions. [2022-04-06 16:41:59,075 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2022-04-06 16:41:59,075 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 16:41:59,075 INFO L499 BasicCegarLoop]: trace histogram [9, 8, 8, 4, 4, 4, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-06 16:41:59,091 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2022-04-06 16:41:59,290 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2022-04-06 16:41:59,291 INFO L403 AbstractCegarLoop]: === Iteration 15 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 16:41:59,291 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 16:41:59,291 INFO L85 PathProgramCache]: Analyzing trace with hash -1455197645, now seen corresponding path program 3 times [2022-04-06 16:41:59,291 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-06 16:41:59,291 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [518196411] [2022-04-06 16:41:59,291 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-04-06 16:41:59,291 INFO L85 PathProgramCache]: Analyzing trace with hash -1455197645, now seen corresponding path program 4 times [2022-04-06 16:41:59,292 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 16:41:59,292 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [516632844] [2022-04-06 16:41:59,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 16:41:59,292 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 16:41:59,309 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-04-06 16:41:59,309 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1695146286] [2022-04-06 16:41:59,309 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-04-06 16:41:59,309 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 16:41:59,309 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-06 16:41:59,310 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-06 16:41:59,313 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-04-06 16:41:59,356 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-04-06 16:41:59,356 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-06 16:41:59,358 INFO L263 TraceCheckSpWp]: Trace formula consists of 210 conjuncts, 88 conjunts are in the unsatisfiable core [2022-04-06 16:41:59,359 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-06 16:42:00,802 WARN L907 QuantifierPusher]: no eliminatee completely removed, nonetheless the elimination was considered successful [2022-04-06 16:42:01,107 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 63 proven. 29 refuted. 0 times theorem prover too weak. 79 trivial. 0 not checked. [2022-04-06 16:42:01,107 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-06 16:42:07,742 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 73 proven. 4 refuted. 0 times theorem prover too weak. 94 trivial. 0 not checked. [2022-04-06 16:42:07,742 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 16:42:07,742 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [516632844] [2022-04-06 16:42:07,742 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-04-06 16:42:07,742 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1695146286] [2022-04-06 16:42:07,742 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1695146286] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-06 16:42:07,742 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-04-06 16:42:07,742 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 14] total 32 [2022-04-06 16:42:07,742 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-06 16:42:07,742 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [518196411] [2022-04-06 16:42:07,742 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [518196411] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 16:42:07,742 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 16:42:07,743 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [23] imperfect sequences [] total 23 [2022-04-06 16:42:07,743 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [332552273] [2022-04-06 16:42:07,743 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 16:42:07,743 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-04-06 16:42:07,743 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-06 16:42:07,743 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-04-06 16:42:07,743 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=156, Invalid=835, Unknown=1, NotChecked=0, Total=992 [2022-04-06 16:42:07,744 INFO L87 Difference]: Start difference. First operand 225 states and 313 transitions. Second operand has 23 states, 20 states have (on average 1.95) internal successors, (39), 19 states have internal predecessors, (39), 7 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 7 states have call predecessors, (13), 6 states have call successors, (13) [2022-04-06 16:42:09,111 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 16:42:09,111 INFO L93 Difference]: Finished difference Result 328 states and 448 transitions. [2022-04-06 16:42:09,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-04-06 16:42:09,112 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 20 states have (on average 1.95) internal successors, (39), 19 states have internal predecessors, (39), 7 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 7 states have call predecessors, (13), 6 states have call successors, (13) Word has length 91 [2022-04-06 16:42:09,112 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 16:42:09,115 INFO L225 Difference]: With dead ends: 328 [2022-04-06 16:42:09,115 INFO L226 Difference]: Without dead ends: 270 [2022-04-06 16:42:09,118 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 189 GetRequests, 149 SyntacticMatches, 2 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 398 ImplicationChecksByTransitivity, 5.6s TimeCoverageRelationStatistics Valid=229, Invalid=1330, Unknown=1, NotChecked=0, Total=1560 [2022-04-06 16:42:09,119 INFO L913 BasicCegarLoop]: 44 mSDtfsCounter, 82 mSDsluCounter, 274 mSDsCounter, 0 mSdLazyCounter, 1113 mSolverCounterSat, 76 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 101 SdHoareTripleChecker+Valid, 318 SdHoareTripleChecker+Invalid, 1189 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 76 IncrementalHoareTripleChecker+Valid, 1113 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-04-06 16:42:09,119 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [101 Valid, 318 Invalid, 1189 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [76 Valid, 1113 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-04-06 16:42:09,120 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 270 states. [2022-04-06 16:42:09,175 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 270 to 258. [2022-04-06 16:42:09,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 258 states, 144 states have (on average 1.1805555555555556) internal successors, (170), 145 states have internal predecessors, (170), 95 states have call successors, (95), 19 states have call predecessors, (95), 18 states have return successors, (93), 93 states have call predecessors, (93), 93 states have call successors, (93) [2022-04-06 16:42:09,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 258 states to 258 states and 358 transitions. [2022-04-06 16:42:09,177 INFO L78 Accepts]: Start accepts. Automaton has 258 states and 358 transitions. Word has length 91 [2022-04-06 16:42:09,177 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 16:42:09,177 INFO L478 AbstractCegarLoop]: Abstraction has 258 states and 358 transitions. [2022-04-06 16:42:09,177 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 20 states have (on average 1.95) internal successors, (39), 19 states have internal predecessors, (39), 7 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 7 states have call predecessors, (13), 6 states have call successors, (13) [2022-04-06 16:42:09,178 INFO L276 IsEmpty]: Start isEmpty. Operand 258 states and 358 transitions. [2022-04-06 16:42:09,179 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2022-04-06 16:42:09,179 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 16:42:09,179 INFO L499 BasicCegarLoop]: trace histogram [13, 12, 12, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-06 16:42:09,249 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2022-04-06 16:42:09,398 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 16:42:09,398 INFO L403 AbstractCegarLoop]: === Iteration 16 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 16:42:09,398 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 16:42:09,398 INFO L85 PathProgramCache]: Analyzing trace with hash -1948981098, now seen corresponding path program 5 times [2022-04-06 16:42:09,399 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-06 16:42:09,399 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1302735416] [2022-04-06 16:42:09,399 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-04-06 16:42:09,399 INFO L85 PathProgramCache]: Analyzing trace with hash -1948981098, now seen corresponding path program 6 times [2022-04-06 16:42:09,399 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 16:42:09,399 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1429500860] [2022-04-06 16:42:09,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 16:42:09,399 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 16:42:09,409 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-04-06 16:42:09,409 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1610151768] [2022-04-06 16:42:09,409 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-04-06 16:42:09,410 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 16:42:09,410 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-06 16:42:09,410 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-06 16:42:09,411 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2022-04-06 16:42:09,475 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2022-04-06 16:42:09,475 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-06 16:42:09,476 INFO L263 TraceCheckSpWp]: Trace formula consists of 228 conjuncts, 59 conjunts are in the unsatisfiable core [2022-04-06 16:42:09,488 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-06 16:42:10,429 INFO L134 CoverageAnalysis]: Checked inductivity of 334 backedges. 63 proven. 42 refuted. 0 times theorem prover too weak. 229 trivial. 0 not checked. [2022-04-06 16:42:10,429 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-06 16:42:10,700 WARN L907 QuantifierPusher]: no eliminatee completely removed, nonetheless the elimination was considered successful [2022-04-06 16:43:20,647 WARN L907 QuantifierPusher]: no eliminatee completely removed, nonetheless the elimination was considered successful [2022-04-06 16:43:47,041 WARN L907 QuantifierPusher]: no eliminatee completely removed, nonetheless the elimination was considered successful [2022-04-06 16:45:19,247 WARN L855 $PredicateComparison]: unable to prove that (and (not (= |c___VERIFIER_assert_#in~cond| 0)) (or (not (= |c___VERIFIER_assert_#in~cond| 1)) (forall ((v_main_~s~0_BEFORE_CALL_57 Int) (v_main_~x~0_BEFORE_CALL_76 Int) (v_main_~d~0_BEFORE_CALL_52 Int) (v_main_~b~0_BEFORE_CALL_84 Int) (v_main_~q~0_BEFORE_CALL_51 Int) (v_main_~y~0_BEFORE_CALL_79 Int) (v_main_~r~0_BEFORE_CALL_55 Int) (v_main_~p~0_BEFORE_CALL_55 Int) (v_main_~k~0_BEFORE_CALL_54 Int)) (let ((.cse0 (* v_main_~d~0_BEFORE_CALL_52 v_main_~b~0_BEFORE_CALL_84))) (or (= (+ (* v_main_~r~0_BEFORE_CALL_55 v_main_~y~0_BEFORE_CALL_79) (* v_main_~p~0_BEFORE_CALL_55 v_main_~x~0_BEFORE_CALL_76) v_main_~b~0_BEFORE_CALL_84) (+ (* v_main_~q~0_BEFORE_CALL_51 v_main_~x~0_BEFORE_CALL_76) (* v_main_~y~0_BEFORE_CALL_79 v_main_~s~0_BEFORE_CALL_57) (* v_main_~y~0_BEFORE_CALL_79 v_main_~k~0_BEFORE_CALL_54 v_main_~s~0_BEFORE_CALL_57) (* v_main_~d~0_BEFORE_CALL_52 v_main_~y~0_BEFORE_CALL_79 v_main_~s~0_BEFORE_CALL_57) (* v_main_~q~0_BEFORE_CALL_51 v_main_~x~0_BEFORE_CALL_76 v_main_~k~0_BEFORE_CALL_54) (* v_main_~q~0_BEFORE_CALL_51 v_main_~d~0_BEFORE_CALL_52 v_main_~x~0_BEFORE_CALL_76))) (= (mod .cse0 v_main_~b~0_BEFORE_CALL_84) 0) (<= .cse0 0) (<= v_main_~b~0_BEFORE_CALL_84 0)))))) is different from true [2022-04-06 16:46:25,283 INFO L134 CoverageAnalysis]: Checked inductivity of 334 backedges. 61 proven. 35 refuted. 0 times theorem prover too weak. 236 trivial. 2 not checked. [2022-04-06 16:46:25,284 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 16:46:25,284 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1429500860] [2022-04-06 16:46:25,284 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-04-06 16:46:25,284 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1610151768] [2022-04-06 16:46:25,284 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1610151768] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-06 16:46:25,284 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-04-06 16:46:25,284 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 16] total 29 [2022-04-06 16:46:25,284 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-06 16:46:25,284 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1302735416] [2022-04-06 16:46:25,284 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1302735416] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 16:46:25,284 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 16:46:25,284 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-04-06 16:46:25,284 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2050280222] [2022-04-06 16:46:25,284 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 16:46:25,285 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-04-06 16:46:25,285 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-06 16:46:25,285 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-04-06 16:46:25,285 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=121, Invalid=638, Unknown=1, NotChecked=52, Total=812 [2022-04-06 16:46:25,285 INFO L87 Difference]: Start difference. First operand 258 states and 358 transitions. Second operand has 18 states, 17 states have (on average 2.0) internal successors, (34), 16 states have internal predecessors, (34), 5 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (12), 5 states have call predecessors, (12), 4 states have call successors, (12) [2022-04-06 16:46:26,192 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 16:46:26,192 INFO L93 Difference]: Finished difference Result 330 states and 459 transitions. [2022-04-06 16:46:26,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-04-06 16:46:26,193 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 2.0) internal successors, (34), 16 states have internal predecessors, (34), 5 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (12), 5 states have call predecessors, (12), 4 states have call successors, (12) Word has length 108 [2022-04-06 16:46:26,193 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 16:46:26,195 INFO L225 Difference]: With dead ends: 330 [2022-04-06 16:46:26,195 INFO L226 Difference]: Without dead ends: 327 [2022-04-06 16:46:26,195 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 225 GetRequests, 187 SyntacticMatches, 1 SemanticMatches, 37 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 290 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=233, Invalid=1176, Unknown=1, NotChecked=72, Total=1482 [2022-04-06 16:46:26,196 INFO L913 BasicCegarLoop]: 44 mSDtfsCounter, 64 mSDsluCounter, 241 mSDsCounter, 0 mSdLazyCounter, 795 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 76 SdHoareTripleChecker+Valid, 285 SdHoareTripleChecker+Invalid, 839 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 795 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-04-06 16:46:26,196 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [76 Valid, 285 Invalid, 839 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 795 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-04-06 16:46:26,196 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 327 states. [2022-04-06 16:46:26,243 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 327 to 317. [2022-04-06 16:46:26,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 317 states, 176 states have (on average 1.1875) internal successors, (209), 177 states have internal predecessors, (209), 119 states have call successors, (119), 22 states have call predecessors, (119), 21 states have return successors, (117), 117 states have call predecessors, (117), 117 states have call successors, (117) [2022-04-06 16:46:26,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 317 states to 317 states and 445 transitions. [2022-04-06 16:46:26,245 INFO L78 Accepts]: Start accepts. Automaton has 317 states and 445 transitions. Word has length 108 [2022-04-06 16:46:26,245 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 16:46:26,245 INFO L478 AbstractCegarLoop]: Abstraction has 317 states and 445 transitions. [2022-04-06 16:46:26,245 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 2.0) internal successors, (34), 16 states have internal predecessors, (34), 5 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (12), 5 states have call predecessors, (12), 4 states have call successors, (12) [2022-04-06 16:46:26,245 INFO L276 IsEmpty]: Start isEmpty. Operand 317 states and 445 transitions. [2022-04-06 16:46:26,246 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2022-04-06 16:46:26,246 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 16:46:26,246 INFO L499 BasicCegarLoop]: trace histogram [13, 12, 12, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2022-04-06 16:46:26,262 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2022-04-06 16:46:26,462 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-04-06 16:46:26,463 INFO L403 AbstractCegarLoop]: === Iteration 17 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 16:46:26,463 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 16:46:26,463 INFO L85 PathProgramCache]: Analyzing trace with hash 1002671399, now seen corresponding path program 7 times [2022-04-06 16:46:26,463 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-06 16:46:26,463 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1337602652] [2022-04-06 16:46:26,463 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-04-06 16:46:26,463 INFO L85 PathProgramCache]: Analyzing trace with hash 1002671399, now seen corresponding path program 8 times [2022-04-06 16:46:26,463 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 16:46:26,463 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1789067144] [2022-04-06 16:46:26,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 16:46:26,464 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 16:46:26,469 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-04-06 16:46:26,470 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1640396956] [2022-04-06 16:46:26,470 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-04-06 16:46:26,470 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 16:46:26,470 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-06 16:46:26,470 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-06 16:46:26,471 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2022-04-06 16:46:26,519 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-04-06 16:46:26,519 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-06 16:46:26,520 INFO L263 TraceCheckSpWp]: Trace formula consists of 267 conjuncts, 12 conjunts are in the unsatisfiable core [2022-04-06 16:46:26,521 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-06 16:46:26,757 INFO L134 CoverageAnalysis]: Checked inductivity of 339 backedges. 165 proven. 15 refuted. 0 times theorem prover too weak. 159 trivial. 0 not checked. [2022-04-06 16:46:26,757 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-06 16:46:27,002 INFO L134 CoverageAnalysis]: Checked inductivity of 339 backedges. 43 proven. 17 refuted. 0 times theorem prover too weak. 279 trivial. 0 not checked. [2022-04-06 16:46:27,002 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 16:46:27,002 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1789067144] [2022-04-06 16:46:27,002 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-04-06 16:46:27,002 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1640396956] [2022-04-06 16:46:27,002 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1640396956] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-06 16:46:27,002 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-04-06 16:46:27,002 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 18 [2022-04-06 16:46:27,002 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-06 16:46:27,002 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1337602652] [2022-04-06 16:46:27,003 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1337602652] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 16:46:27,003 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 16:46:27,003 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-04-06 16:46:27,003 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [220020474] [2022-04-06 16:46:27,003 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 16:46:27,003 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-04-06 16:46:27,003 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-06 16:46:27,003 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-04-06 16:46:27,003 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=249, Unknown=0, NotChecked=0, Total=306 [2022-04-06 16:46:27,003 INFO L87 Difference]: Start difference. First operand 317 states and 445 transitions. Second operand has 11 states, 11 states have (on average 3.4545454545454546) internal successors, (38), 11 states have internal predecessors, (38), 5 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (17), 5 states have call predecessors, (17), 5 states have call successors, (17) [2022-04-06 16:46:27,219 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 16:46:27,220 INFO L93 Difference]: Finished difference Result 387 states and 528 transitions. [2022-04-06 16:46:27,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-04-06 16:46:27,220 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.4545454545454546) internal successors, (38), 11 states have internal predecessors, (38), 5 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (17), 5 states have call predecessors, (17), 5 states have call successors, (17) Word has length 111 [2022-04-06 16:46:27,221 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 16:46:27,223 INFO L225 Difference]: With dead ends: 387 [2022-04-06 16:46:27,223 INFO L226 Difference]: Without dead ends: 271 [2022-04-06 16:46:27,223 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 229 GetRequests, 204 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 78 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=140, Invalid=510, Unknown=0, NotChecked=0, Total=650 [2022-04-06 16:46:27,224 INFO L913 BasicCegarLoop]: 47 mSDtfsCounter, 47 mSDsluCounter, 167 mSDsCounter, 0 mSdLazyCounter, 203 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 214 SdHoareTripleChecker+Invalid, 239 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 203 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-04-06 16:46:27,224 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [51 Valid, 214 Invalid, 239 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 203 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-04-06 16:46:27,224 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 271 states. [2022-04-06 16:46:27,257 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 271 to 232. [2022-04-06 16:46:27,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 232 states, 133 states have (on average 1.150375939849624) internal successors, (153), 134 states have internal predecessors, (153), 79 states have call successors, (79), 20 states have call predecessors, (79), 19 states have return successors, (77), 77 states have call predecessors, (77), 77 states have call successors, (77) [2022-04-06 16:46:27,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 232 states to 232 states and 309 transitions. [2022-04-06 16:46:27,258 INFO L78 Accepts]: Start accepts. Automaton has 232 states and 309 transitions. Word has length 111 [2022-04-06 16:46:27,259 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 16:46:27,259 INFO L478 AbstractCegarLoop]: Abstraction has 232 states and 309 transitions. [2022-04-06 16:46:27,259 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.4545454545454546) internal successors, (38), 11 states have internal predecessors, (38), 5 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (17), 5 states have call predecessors, (17), 5 states have call successors, (17) [2022-04-06 16:46:27,259 INFO L276 IsEmpty]: Start isEmpty. Operand 232 states and 309 transitions. [2022-04-06 16:46:27,259 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2022-04-06 16:46:27,260 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 16:46:27,260 INFO L499 BasicCegarLoop]: trace histogram [13, 12, 12, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2022-04-06 16:46:27,275 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2022-04-06 16:46:27,475 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2022-04-06 16:46:27,475 INFO L403 AbstractCegarLoop]: === Iteration 18 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 16:46:27,476 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 16:46:27,476 INFO L85 PathProgramCache]: Analyzing trace with hash 890766036, now seen corresponding path program 9 times [2022-04-06 16:46:27,476 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-06 16:46:27,476 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [422055607] [2022-04-06 16:46:27,476 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-04-06 16:46:27,476 INFO L85 PathProgramCache]: Analyzing trace with hash 890766036, now seen corresponding path program 10 times [2022-04-06 16:46:27,476 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 16:46:27,476 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1549899687] [2022-04-06 16:46:27,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 16:46:27,476 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 16:46:27,482 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-04-06 16:46:27,482 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1678399926] [2022-04-06 16:46:27,482 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-04-06 16:46:27,482 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 16:46:27,482 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-06 16:46:27,488 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-06 16:46:27,489 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2022-04-06 16:46:27,531 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-04-06 16:46:27,531 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-06 16:46:27,532 INFO L263 TraceCheckSpWp]: Trace formula consists of 252 conjuncts, 14 conjunts are in the unsatisfiable core [2022-04-06 16:46:27,533 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-06 16:46:27,889 INFO L134 CoverageAnalysis]: Checked inductivity of 343 backedges. 34 proven. 30 refuted. 0 times theorem prover too weak. 279 trivial. 0 not checked. [2022-04-06 16:46:27,890 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-06 16:46:29,069 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 16:46:29,069 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1549899687] [2022-04-06 16:46:29,069 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-04-06 16:46:29,069 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1678399926] [2022-04-06 16:46:29,069 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1678399926] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-06 16:46:29,069 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-04-06 16:46:29,069 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2022-04-06 16:46:29,069 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-06 16:46:29,069 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [422055607] [2022-04-06 16:46:29,069 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [422055607] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 16:46:29,069 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 16:46:29,070 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-04-06 16:46:29,070 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [382003116] [2022-04-06 16:46:29,070 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 16:46:29,070 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-04-06 16:46:29,070 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-06 16:46:29,070 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-04-06 16:46:29,070 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=320, Unknown=0, NotChecked=0, Total=380 [2022-04-06 16:46:29,070 INFO L87 Difference]: Start difference. First operand 232 states and 309 transitions. Second operand has 12 states, 12 states have (on average 3.1666666666666665) internal successors, (38), 11 states have internal predecessors, (38), 6 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (17), 5 states have call predecessors, (17), 5 states have call successors, (17) [2022-04-06 16:46:29,592 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 16:46:29,592 INFO L93 Difference]: Finished difference Result 349 states and 486 transitions. [2022-04-06 16:46:29,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-04-06 16:46:29,593 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.1666666666666665) internal successors, (38), 11 states have internal predecessors, (38), 6 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (17), 5 states have call predecessors, (17), 5 states have call successors, (17) Word has length 113 [2022-04-06 16:46:29,593 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 16:46:29,594 INFO L225 Difference]: With dead ends: 349 [2022-04-06 16:46:29,594 INFO L226 Difference]: Without dead ends: 295 [2022-04-06 16:46:29,595 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 209 GetRequests, 177 SyntacticMatches, 4 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 140 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=192, Invalid=678, Unknown=0, NotChecked=0, Total=870 [2022-04-06 16:46:29,595 INFO L913 BasicCegarLoop]: 76 mSDtfsCounter, 44 mSDsluCounter, 285 mSDsCounter, 0 mSdLazyCounter, 530 mSolverCounterSat, 94 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 361 SdHoareTripleChecker+Invalid, 624 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 94 IncrementalHoareTripleChecker+Valid, 530 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-04-06 16:46:29,595 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [44 Valid, 361 Invalid, 624 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [94 Valid, 530 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-04-06 16:46:29,595 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 295 states. [2022-04-06 16:46:29,637 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 295 to 253. [2022-04-06 16:46:29,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 253 states, 146 states have (on average 1.1506849315068493) internal successors, (168), 147 states have internal predecessors, (168), 87 states have call successors, (87), 20 states have call predecessors, (87), 19 states have return successors, (85), 85 states have call predecessors, (85), 85 states have call successors, (85) [2022-04-06 16:46:29,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 253 states to 253 states and 340 transitions. [2022-04-06 16:46:29,639 INFO L78 Accepts]: Start accepts. Automaton has 253 states and 340 transitions. Word has length 113 [2022-04-06 16:46:29,639 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 16:46:29,639 INFO L478 AbstractCegarLoop]: Abstraction has 253 states and 340 transitions. [2022-04-06 16:46:29,639 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.1666666666666665) internal successors, (38), 11 states have internal predecessors, (38), 6 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (17), 5 states have call predecessors, (17), 5 states have call successors, (17) [2022-04-06 16:46:29,639 INFO L276 IsEmpty]: Start isEmpty. Operand 253 states and 340 transitions. [2022-04-06 16:46:29,640 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2022-04-06 16:46:29,640 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 16:46:29,640 INFO L499 BasicCegarLoop]: trace histogram [13, 12, 12, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-06 16:46:29,658 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2022-04-06 16:46:29,850 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2022-04-06 16:46:29,850 INFO L403 AbstractCegarLoop]: === Iteration 19 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 16:46:29,850 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 16:46:29,850 INFO L85 PathProgramCache]: Analyzing trace with hash 1938711081, now seen corresponding path program 11 times [2022-04-06 16:46:29,851 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-06 16:46:29,851 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [877976763] [2022-04-06 16:46:29,851 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-04-06 16:46:29,851 INFO L85 PathProgramCache]: Analyzing trace with hash 1938711081, now seen corresponding path program 12 times [2022-04-06 16:46:29,851 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 16:46:29,851 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [566858073] [2022-04-06 16:46:29,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 16:46:29,851 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 16:46:29,883 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-04-06 16:46:29,884 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [259550737] [2022-04-06 16:46:29,884 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-04-06 16:46:29,884 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 16:46:29,884 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-06 16:46:29,887 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-06 16:46:29,890 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2022-04-06 16:46:29,943 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2022-04-06 16:46:29,943 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-06 16:46:29,944 INFO L263 TraceCheckSpWp]: Trace formula consists of 256 conjuncts, 20 conjunts are in the unsatisfiable core [2022-04-06 16:46:29,945 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-06 16:46:30,164 INFO L134 CoverageAnalysis]: Checked inductivity of 350 backedges. 33 proven. 32 refuted. 0 times theorem prover too weak. 285 trivial. 0 not checked. [2022-04-06 16:46:30,165 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-06 16:46:30,486 INFO L134 CoverageAnalysis]: Checked inductivity of 350 backedges. 53 proven. 12 refuted. 0 times theorem prover too weak. 285 trivial. 0 not checked. [2022-04-06 16:46:30,486 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 16:46:30,486 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [566858073] [2022-04-06 16:46:30,486 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-04-06 16:46:30,487 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [259550737] [2022-04-06 16:46:30,487 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [259550737] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-06 16:46:30,487 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-04-06 16:46:30,487 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 14] total 21 [2022-04-06 16:46:30,487 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-06 16:46:30,487 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [877976763] [2022-04-06 16:46:30,487 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [877976763] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 16:46:30,487 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 16:46:30,487 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-04-06 16:46:30,487 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [741415558] [2022-04-06 16:46:30,487 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 16:46:30,487 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-04-06 16:46:30,487 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-06 16:46:30,488 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-04-06 16:46:30,488 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=346, Unknown=0, NotChecked=0, Total=420 [2022-04-06 16:46:30,488 INFO L87 Difference]: Start difference. First operand 253 states and 340 transitions. Second operand has 13 states, 13 states have (on average 3.076923076923077) internal successors, (40), 12 states have internal predecessors, (40), 5 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 4 states have call predecessors, (13), 4 states have call successors, (13) [2022-04-06 16:46:30,937 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 16:46:30,938 INFO L93 Difference]: Finished difference Result 317 states and 438 transitions. [2022-04-06 16:46:30,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-04-06 16:46:30,938 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.076923076923077) internal successors, (40), 12 states have internal predecessors, (40), 5 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 4 states have call predecessors, (13), 4 states have call successors, (13) Word has length 116 [2022-04-06 16:46:30,938 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 16:46:30,940 INFO L225 Difference]: With dead ends: 317 [2022-04-06 16:46:30,940 INFO L226 Difference]: Without dead ends: 310 [2022-04-06 16:46:30,940 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 246 GetRequests, 210 SyntacticMatches, 2 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 150 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=347, Invalid=913, Unknown=0, NotChecked=0, Total=1260 [2022-04-06 16:46:30,940 INFO L913 BasicCegarLoop]: 81 mSDtfsCounter, 58 mSDsluCounter, 239 mSDsCounter, 0 mSdLazyCounter, 416 mSolverCounterSat, 115 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 320 SdHoareTripleChecker+Invalid, 531 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 115 IncrementalHoareTripleChecker+Valid, 416 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-04-06 16:46:30,940 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [58 Valid, 320 Invalid, 531 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [115 Valid, 416 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-04-06 16:46:30,941 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 310 states. [2022-04-06 16:46:30,984 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 310 to 259. [2022-04-06 16:46:30,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 259 states, 152 states have (on average 1.1513157894736843) internal successors, (175), 153 states have internal predecessors, (175), 87 states have call successors, (87), 20 states have call predecessors, (87), 19 states have return successors, (85), 85 states have call predecessors, (85), 85 states have call successors, (85) [2022-04-06 16:46:30,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 259 states to 259 states and 347 transitions. [2022-04-06 16:46:30,986 INFO L78 Accepts]: Start accepts. Automaton has 259 states and 347 transitions. Word has length 116 [2022-04-06 16:46:30,986 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 16:46:30,986 INFO L478 AbstractCegarLoop]: Abstraction has 259 states and 347 transitions. [2022-04-06 16:46:30,986 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.076923076923077) internal successors, (40), 12 states have internal predecessors, (40), 5 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 4 states have call predecessors, (13), 4 states have call successors, (13) [2022-04-06 16:46:30,986 INFO L276 IsEmpty]: Start isEmpty. Operand 259 states and 347 transitions. [2022-04-06 16:46:30,987 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2022-04-06 16:46:30,987 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 16:46:30,987 INFO L499 BasicCegarLoop]: trace histogram [13, 12, 12, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-06 16:46:31,019 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2022-04-06 16:46:31,203 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 16:46:31,204 INFO L403 AbstractCegarLoop]: === Iteration 20 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 16:46:31,204 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 16:46:31,204 INFO L85 PathProgramCache]: Analyzing trace with hash -1687072417, now seen corresponding path program 13 times [2022-04-06 16:46:31,204 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-06 16:46:31,204 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1120184715] [2022-04-06 16:46:31,204 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-04-06 16:46:31,204 INFO L85 PathProgramCache]: Analyzing trace with hash -1687072417, now seen corresponding path program 14 times [2022-04-06 16:46:31,204 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 16:46:31,205 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1856926464] [2022-04-06 16:46:31,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 16:46:31,205 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 16:46:31,220 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-04-06 16:46:31,220 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1241655882] [2022-04-06 16:46:31,221 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-04-06 16:46:31,221 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 16:46:31,221 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-06 16:46:31,224 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-06 16:46:31,262 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2022-04-06 16:46:31,281 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-04-06 16:46:31,281 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-06 16:46:31,282 INFO L263 TraceCheckSpWp]: Trace formula consists of 289 conjuncts, 17 conjunts are in the unsatisfiable core [2022-04-06 16:46:31,283 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-06 16:46:31,646 INFO L134 CoverageAnalysis]: Checked inductivity of 350 backedges. 39 proven. 32 refuted. 0 times theorem prover too weak. 279 trivial. 0 not checked. [2022-04-06 16:46:31,646 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-06 16:46:32,031 INFO L134 CoverageAnalysis]: Checked inductivity of 350 backedges. 29 proven. 42 refuted. 0 times theorem prover too weak. 279 trivial. 0 not checked. [2022-04-06 16:46:32,032 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 16:46:32,032 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1856926464] [2022-04-06 16:46:32,032 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-04-06 16:46:32,032 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1241655882] [2022-04-06 16:46:32,032 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1241655882] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-06 16:46:32,032 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-04-06 16:46:32,032 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 26 [2022-04-06 16:46:32,032 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-06 16:46:32,032 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1120184715] [2022-04-06 16:46:32,032 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1120184715] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 16:46:32,032 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 16:46:32,032 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2022-04-06 16:46:32,032 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1893420598] [2022-04-06 16:46:32,032 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 16:46:32,033 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-04-06 16:46:32,033 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-06 16:46:32,033 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-04-06 16:46:32,033 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=565, Unknown=0, NotChecked=0, Total=650 [2022-04-06 16:46:32,033 INFO L87 Difference]: Start difference. First operand 259 states and 347 transitions. Second operand has 15 states, 15 states have (on average 2.7333333333333334) internal successors, (41), 15 states have internal predecessors, (41), 6 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (17), 5 states have call predecessors, (17), 5 states have call successors, (17) [2022-04-06 16:46:32,481 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 16:46:32,481 INFO L93 Difference]: Finished difference Result 376 states and 511 transitions. [2022-04-06 16:46:32,493 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-04-06 16:46:32,493 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.7333333333333334) internal successors, (41), 15 states have internal predecessors, (41), 6 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (17), 5 states have call predecessors, (17), 5 states have call successors, (17) Word has length 116 [2022-04-06 16:46:32,494 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 16:46:32,495 INFO L225 Difference]: With dead ends: 376 [2022-04-06 16:46:32,495 INFO L226 Difference]: Without dead ends: 259 [2022-04-06 16:46:32,496 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 242 GetRequests, 206 SyntacticMatches, 1 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 227 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=200, Invalid=1132, Unknown=0, NotChecked=0, Total=1332 [2022-04-06 16:46:32,496 INFO L913 BasicCegarLoop]: 62 mSDtfsCounter, 52 mSDsluCounter, 279 mSDsCounter, 0 mSdLazyCounter, 394 mSolverCounterSat, 63 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 341 SdHoareTripleChecker+Invalid, 457 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 63 IncrementalHoareTripleChecker+Valid, 394 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-04-06 16:46:32,496 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [56 Valid, 341 Invalid, 457 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [63 Valid, 394 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-04-06 16:46:32,496 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 259 states. [2022-04-06 16:46:32,563 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 259 to 259. [2022-04-06 16:46:32,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 259 states, 152 states have (on average 1.144736842105263) internal successors, (174), 153 states have internal predecessors, (174), 87 states have call successors, (87), 20 states have call predecessors, (87), 19 states have return successors, (85), 85 states have call predecessors, (85), 85 states have call successors, (85) [2022-04-06 16:46:32,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 259 states to 259 states and 346 transitions. [2022-04-06 16:46:32,570 INFO L78 Accepts]: Start accepts. Automaton has 259 states and 346 transitions. Word has length 116 [2022-04-06 16:46:32,570 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 16:46:32,570 INFO L478 AbstractCegarLoop]: Abstraction has 259 states and 346 transitions. [2022-04-06 16:46:32,570 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 2.7333333333333334) internal successors, (41), 15 states have internal predecessors, (41), 6 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (17), 5 states have call predecessors, (17), 5 states have call successors, (17) [2022-04-06 16:46:32,570 INFO L276 IsEmpty]: Start isEmpty. Operand 259 states and 346 transitions. [2022-04-06 16:46:32,571 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2022-04-06 16:46:32,571 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 16:46:32,571 INFO L499 BasicCegarLoop]: trace histogram [13, 12, 12, 5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2022-04-06 16:46:32,587 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2022-04-06 16:46:32,787 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 16:46:32,787 INFO L403 AbstractCegarLoop]: === Iteration 21 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 16:46:32,787 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 16:46:32,787 INFO L85 PathProgramCache]: Analyzing trace with hash 2089528091, now seen corresponding path program 1 times [2022-04-06 16:46:32,787 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-06 16:46:32,787 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1876494794] [2022-04-06 16:46:32,789 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-04-06 16:46:32,789 INFO L85 PathProgramCache]: Analyzing trace with hash 2089528091, now seen corresponding path program 2 times [2022-04-06 16:46:32,789 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 16:46:32,789 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [112893617] [2022-04-06 16:46:32,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 16:46:32,789 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 16:46:32,802 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-04-06 16:46:32,802 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1769802102] [2022-04-06 16:46:32,802 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-04-06 16:46:32,802 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 16:46:32,802 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-06 16:46:32,803 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-06 16:46:32,804 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2022-04-06 16:46:32,853 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-04-06 16:46:32,854 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-06 16:46:32,854 INFO L263 TraceCheckSpWp]: Trace formula consists of 299 conjuncts, 13 conjunts are in the unsatisfiable core [2022-04-06 16:46:32,856 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-06 16:46:33,112 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 183 proven. 18 refuted. 0 times theorem prover too weak. 163 trivial. 0 not checked. [2022-04-06 16:46:33,112 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-06 16:46:33,398 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 61 proven. 20 refuted. 0 times theorem prover too weak. 283 trivial. 0 not checked. [2022-04-06 16:46:33,398 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 16:46:33,398 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [112893617] [2022-04-06 16:46:33,398 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-04-06 16:46:33,398 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1769802102] [2022-04-06 16:46:33,398 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1769802102] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-06 16:46:33,398 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-04-06 16:46:33,398 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 19 [2022-04-06 16:46:33,399 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-06 16:46:33,399 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1876494794] [2022-04-06 16:46:33,399 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1876494794] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 16:46:33,399 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 16:46:33,399 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-04-06 16:46:33,399 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [666976849] [2022-04-06 16:46:33,399 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 16:46:33,399 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-04-06 16:46:33,399 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-06 16:46:33,399 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-04-06 16:46:33,400 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=283, Unknown=0, NotChecked=0, Total=342 [2022-04-06 16:46:33,400 INFO L87 Difference]: Start difference. First operand 259 states and 346 transitions. Second operand has 12 states, 12 states have (on average 3.6666666666666665) internal successors, (44), 11 states have internal predecessors, (44), 5 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (17), 5 states have call predecessors, (17), 5 states have call successors, (17) [2022-04-06 16:46:33,661 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 16:46:33,661 INFO L93 Difference]: Finished difference Result 318 states and 413 transitions. [2022-04-06 16:46:33,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-04-06 16:46:33,662 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.6666666666666665) internal successors, (44), 11 states have internal predecessors, (44), 5 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (17), 5 states have call predecessors, (17), 5 states have call successors, (17) Word has length 119 [2022-04-06 16:46:33,662 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 16:46:33,662 INFO L225 Difference]: With dead ends: 318 [2022-04-06 16:46:33,662 INFO L226 Difference]: Without dead ends: 141 [2022-04-06 16:46:33,663 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 245 GetRequests, 219 SyntacticMatches, 1 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=149, Invalid=553, Unknown=0, NotChecked=0, Total=702 [2022-04-06 16:46:33,664 INFO L913 BasicCegarLoop]: 52 mSDtfsCounter, 37 mSDsluCounter, 178 mSDsCounter, 0 mSdLazyCounter, 257 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 230 SdHoareTripleChecker+Invalid, 310 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 257 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-04-06 16:46:33,664 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [37 Valid, 230 Invalid, 310 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 257 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-04-06 16:46:33,664 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141 states. [2022-04-06 16:46:33,683 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141 to 141. [2022-04-06 16:46:33,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 141 states, 87 states have (on average 1.0459770114942528) internal successors, (91), 88 states have internal predecessors, (91), 39 states have call successors, (39), 15 states have call predecessors, (39), 14 states have return successors, (37), 37 states have call predecessors, (37), 37 states have call successors, (37) [2022-04-06 16:46:33,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 167 transitions. [2022-04-06 16:46:33,683 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 167 transitions. Word has length 119 [2022-04-06 16:46:33,684 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 16:46:33,684 INFO L478 AbstractCegarLoop]: Abstraction has 141 states and 167 transitions. [2022-04-06 16:46:33,684 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.6666666666666665) internal successors, (44), 11 states have internal predecessors, (44), 5 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (17), 5 states have call predecessors, (17), 5 states have call successors, (17) [2022-04-06 16:46:33,684 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 167 transitions. [2022-04-06 16:46:33,684 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2022-04-06 16:46:33,684 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 16:46:33,684 INFO L499 BasicCegarLoop]: trace histogram [21, 20, 20, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 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] [2022-04-06 16:46:33,700 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0 [2022-04-06 16:46:33,900 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2022-04-06 16:46:33,900 INFO L403 AbstractCegarLoop]: === Iteration 22 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 16:46:33,901 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 16:46:33,901 INFO L85 PathProgramCache]: Analyzing trace with hash 2097211745, now seen corresponding path program 15 times [2022-04-06 16:46:33,901 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-06 16:46:33,901 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1447751488] [2022-04-06 16:46:33,901 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-04-06 16:46:33,901 INFO L85 PathProgramCache]: Analyzing trace with hash 2097211745, now seen corresponding path program 16 times [2022-04-06 16:46:33,901 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 16:46:33,901 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [613753961] [2022-04-06 16:46:33,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 16:46:33,901 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 16:46:33,907 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-04-06 16:46:33,907 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1778782771] [2022-04-06 16:46:33,907 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-04-06 16:46:33,907 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 16:46:33,907 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-06 16:46:33,915 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-06 16:46:33,916 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2022-04-06 16:46:33,968 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-04-06 16:46:33,968 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-06 16:46:33,969 INFO L263 TraceCheckSpWp]: Trace formula consists of 342 conjuncts, 19 conjunts are in the unsatisfiable core [2022-04-06 16:46:33,971 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-06 16:46:34,870 INFO L134 CoverageAnalysis]: Checked inductivity of 904 backedges. 53 proven. 76 refuted. 0 times theorem prover too weak. 775 trivial. 0 not checked. [2022-04-06 16:46:34,870 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-06 16:46:35,577 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 16:46:35,577 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [613753961] [2022-04-06 16:46:35,577 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-04-06 16:46:35,577 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1778782771] [2022-04-06 16:46:35,577 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1778782771] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-06 16:46:35,577 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-04-06 16:46:35,577 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2022-04-06 16:46:35,578 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-06 16:46:35,578 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1447751488] [2022-04-06 16:46:35,578 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1447751488] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 16:46:35,578 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 16:46:35,578 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2022-04-06 16:46:35,578 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [942707275] [2022-04-06 16:46:35,578 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 16:46:35,578 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-04-06 16:46:35,578 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-06 16:46:35,578 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-04-06 16:46:35,579 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=121, Invalid=749, Unknown=0, NotChecked=0, Total=870 [2022-04-06 16:46:35,579 INFO L87 Difference]: Start difference. First operand 141 states and 167 transitions. Second operand has 17 states, 17 states have (on average 2.6470588235294117) internal successors, (45), 17 states have internal predecessors, (45), 8 states have call successors, (27), 2 states have call predecessors, (27), 2 states have return successors, (25), 7 states have call predecessors, (25), 7 states have call successors, (25) [2022-04-06 16:46:36,292 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 16:46:36,293 INFO L93 Difference]: Finished difference Result 218 states and 267 transitions. [2022-04-06 16:46:36,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-04-06 16:46:36,294 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.6470588235294117) internal successors, (45), 17 states have internal predecessors, (45), 8 states have call successors, (27), 2 states have call predecessors, (27), 2 states have return successors, (25), 7 states have call predecessors, (25), 7 states have call successors, (25) Word has length 160 [2022-04-06 16:46:36,295 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 16:46:36,295 INFO L225 Difference]: With dead ends: 218 [2022-04-06 16:46:36,295 INFO L226 Difference]: Without dead ends: 147 [2022-04-06 16:46:36,296 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 303 GetRequests, 265 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 266 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=237, Invalid=1323, Unknown=0, NotChecked=0, Total=1560 [2022-04-06 16:46:36,296 INFO L913 BasicCegarLoop]: 79 mSDtfsCounter, 62 mSDsluCounter, 406 mSDsCounter, 0 mSdLazyCounter, 321 mSolverCounterSat, 75 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 66 SdHoareTripleChecker+Valid, 485 SdHoareTripleChecker+Invalid, 610 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 75 IncrementalHoareTripleChecker+Valid, 321 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 214 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-04-06 16:46:36,296 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [66 Valid, 485 Invalid, 610 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [75 Valid, 321 Invalid, 0 Unknown, 214 Unchecked, 0.5s Time] [2022-04-06 16:46:36,297 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147 states. [2022-04-06 16:46:36,316 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147 to 147. [2022-04-06 16:46:36,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 147 states, 89 states have (on average 1.0449438202247192) internal successors, (93), 90 states have internal predecessors, (93), 43 states have call successors, (43), 15 states have call predecessors, (43), 14 states have return successors, (41), 41 states have call predecessors, (41), 41 states have call successors, (41) [2022-04-06 16:46:36,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147 states to 147 states and 177 transitions. [2022-04-06 16:46:36,317 INFO L78 Accepts]: Start accepts. Automaton has 147 states and 177 transitions. Word has length 160 [2022-04-06 16:46:36,317 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 16:46:36,317 INFO L478 AbstractCegarLoop]: Abstraction has 147 states and 177 transitions. [2022-04-06 16:46:36,318 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.6470588235294117) internal successors, (45), 17 states have internal predecessors, (45), 8 states have call successors, (27), 2 states have call predecessors, (27), 2 states have return successors, (25), 7 states have call predecessors, (25), 7 states have call successors, (25) [2022-04-06 16:46:36,318 INFO L276 IsEmpty]: Start isEmpty. Operand 147 states and 177 transitions. [2022-04-06 16:46:36,319 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2022-04-06 16:46:36,319 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 16:46:36,319 INFO L499 BasicCegarLoop]: trace histogram [25, 24, 24, 6, 6, 6, 6, 6, 6, 6, 6, 6, 4, 4, 4, 4, 4, 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] [2022-04-06 16:46:36,335 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2022-04-06 16:46:36,535 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2022-04-06 16:46:36,535 INFO L403 AbstractCegarLoop]: === Iteration 23 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 16:46:36,535 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 16:46:36,535 INFO L85 PathProgramCache]: Analyzing trace with hash 576880450, now seen corresponding path program 17 times [2022-04-06 16:46:36,535 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-06 16:46:36,535 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [60998048] [2022-04-06 16:46:36,536 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-04-06 16:46:36,536 INFO L85 PathProgramCache]: Analyzing trace with hash 576880450, now seen corresponding path program 18 times [2022-04-06 16:46:36,536 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 16:46:36,536 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [830417556] [2022-04-06 16:46:36,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 16:46:36,536 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 16:46:36,542 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-04-06 16:46:36,542 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [191847133] [2022-04-06 16:46:36,542 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-04-06 16:46:36,542 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 16:46:36,542 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-06 16:46:36,543 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-06 16:46:36,546 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2022-04-06 16:46:36,605 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2022-04-06 16:46:36,605 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-06 16:46:36,606 INFO L263 TraceCheckSpWp]: Trace formula consists of 250 conjuncts, 14 conjunts are in the unsatisfiable core [2022-04-06 16:46:36,608 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-06 16:46:36,779 INFO L134 CoverageAnalysis]: Checked inductivity of 1286 backedges. 92 proven. 49 refuted. 0 times theorem prover too weak. 1145 trivial. 0 not checked. [2022-04-06 16:46:36,779 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-06 16:46:37,063 INFO L134 CoverageAnalysis]: Checked inductivity of 1286 backedges. 122 proven. 19 refuted. 0 times theorem prover too weak. 1145 trivial. 0 not checked. [2022-04-06 16:46:37,063 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 16:46:37,063 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [830417556] [2022-04-06 16:46:37,063 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-04-06 16:46:37,063 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [191847133] [2022-04-06 16:46:37,064 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [191847133] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-06 16:46:37,064 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-04-06 16:46:37,064 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 18 [2022-04-06 16:46:37,064 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-06 16:46:37,064 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [60998048] [2022-04-06 16:46:37,064 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [60998048] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 16:46:37,064 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 16:46:37,064 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-04-06 16:46:37,064 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1236963795] [2022-04-06 16:46:37,064 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 16:46:37,065 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-04-06 16:46:37,065 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-06 16:46:37,065 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-04-06 16:46:37,066 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=254, Unknown=0, NotChecked=0, Total=306 [2022-04-06 16:46:37,066 INFO L87 Difference]: Start difference. First operand 147 states and 177 transitions. Second operand has 13 states, 13 states have (on average 3.230769230769231) internal successors, (42), 13 states have internal predecessors, (42), 6 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (17), 5 states have call predecessors, (17), 5 states have call successors, (17) [2022-04-06 16:46:37,388 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 16:46:37,388 INFO L93 Difference]: Finished difference Result 153 states and 182 transitions. [2022-04-06 16:46:37,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-04-06 16:46:37,388 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.230769230769231) internal successors, (42), 13 states have internal predecessors, (42), 6 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (17), 5 states have call predecessors, (17), 5 states have call successors, (17) Word has length 182 [2022-04-06 16:46:37,388 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 16:46:37,389 INFO L225 Difference]: With dead ends: 153 [2022-04-06 16:46:37,389 INFO L226 Difference]: Without dead ends: 146 [2022-04-06 16:46:37,389 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 375 GetRequests, 345 SyntacticMatches, 2 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 120 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=209, Invalid=661, Unknown=0, NotChecked=0, Total=870 [2022-04-06 16:46:37,390 INFO L913 BasicCegarLoop]: 55 mSDtfsCounter, 41 mSDsluCounter, 238 mSDsCounter, 0 mSdLazyCounter, 353 mSolverCounterSat, 71 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 293 SdHoareTripleChecker+Invalid, 424 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 71 IncrementalHoareTripleChecker+Valid, 353 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-04-06 16:46:37,390 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [41 Valid, 293 Invalid, 424 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [71 Valid, 353 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-04-06 16:46:37,391 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2022-04-06 16:46:37,410 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 140. [2022-04-06 16:46:37,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 140 states, 83 states have (on average 1.036144578313253) internal successors, (86), 83 states have internal predecessors, (86), 42 states have call successors, (42), 15 states have call predecessors, (42), 14 states have return successors, (41), 41 states have call predecessors, (41), 41 states have call successors, (41) [2022-04-06 16:46:37,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 169 transitions. [2022-04-06 16:46:37,411 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 169 transitions. Word has length 182 [2022-04-06 16:46:37,412 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 16:46:37,412 INFO L478 AbstractCegarLoop]: Abstraction has 140 states and 169 transitions. [2022-04-06 16:46:37,412 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.230769230769231) internal successors, (42), 13 states have internal predecessors, (42), 6 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (17), 5 states have call predecessors, (17), 5 states have call successors, (17) [2022-04-06 16:46:37,412 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 169 transitions. [2022-04-06 16:46:37,416 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2022-04-06 16:46:37,416 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 16:46:37,416 INFO L499 BasicCegarLoop]: trace histogram [25, 24, 24, 7, 7, 6, 6, 6, 6, 6, 6, 6, 5, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-06 16:46:37,441 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2022-04-06 16:46:37,631 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 16:46:37,631 INFO L403 AbstractCegarLoop]: === Iteration 24 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 16:46:37,632 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 16:46:37,632 INFO L85 PathProgramCache]: Analyzing trace with hash 2054277986, now seen corresponding path program 3 times [2022-04-06 16:46:37,632 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-06 16:46:37,632 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [73906179] [2022-04-06 16:46:37,632 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-04-06 16:46:37,632 INFO L85 PathProgramCache]: Analyzing trace with hash 2054277986, now seen corresponding path program 4 times [2022-04-06 16:46:37,632 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 16:46:37,632 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [975504925] [2022-04-06 16:46:37,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 16:46:37,633 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 16:46:37,638 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-04-06 16:46:37,638 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [65206721] [2022-04-06 16:46:37,638 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-04-06 16:46:37,639 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 16:46:37,639 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-06 16:46:37,641 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-06 16:46:37,641 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2022-04-06 16:46:37,699 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-04-06 16:46:37,699 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-06 16:46:37,700 INFO L263 TraceCheckSpWp]: Trace formula consists of 394 conjuncts, 20 conjunts are in the unsatisfiable core [2022-04-06 16:46:37,705 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-06 16:46:44,091 INFO L134 CoverageAnalysis]: Checked inductivity of 1306 backedges. 81 proven. 106 refuted. 0 times theorem prover too weak. 1119 trivial. 0 not checked. [2022-04-06 16:46:44,091 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-06 16:46:45,850 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 16:46:45,850 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [975504925] [2022-04-06 16:46:45,850 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-04-06 16:46:45,850 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [65206721] [2022-04-06 16:46:45,850 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [65206721] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-06 16:46:45,850 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-04-06 16:46:45,850 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2022-04-06 16:46:45,850 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-06 16:46:45,850 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [73906179] [2022-04-06 16:46:45,850 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [73906179] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 16:46:45,851 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 16:46:45,851 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-04-06 16:46:45,851 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1778808930] [2022-04-06 16:46:45,851 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 16:46:45,851 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-04-06 16:46:45,851 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-06 16:46:45,851 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-04-06 16:46:45,851 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=139, Invalid=853, Unknown=0, NotChecked=0, Total=992 [2022-04-06 16:46:45,852 INFO L87 Difference]: Start difference. First operand 140 states and 169 transitions. Second operand has 18 states, 18 states have (on average 2.7777777777777777) internal successors, (50), 18 states have internal predecessors, (50), 9 states have call successors, (31), 2 states have call predecessors, (31), 2 states have return successors, (29), 8 states have call predecessors, (29), 8 states have call successors, (29) [2022-04-06 16:46:48,663 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 16:46:48,664 INFO L93 Difference]: Finished difference Result 213 states and 264 transitions. [2022-04-06 16:46:48,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-04-06 16:46:48,664 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.7777777777777777) internal successors, (50), 18 states have internal predecessors, (50), 9 states have call successors, (31), 2 states have call predecessors, (31), 2 states have return successors, (29), 8 states have call predecessors, (29), 8 states have call successors, (29) Word has length 185 [2022-04-06 16:46:48,664 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 16:46:48,665 INFO L225 Difference]: With dead ends: 213 [2022-04-06 16:46:48,665 INFO L226 Difference]: Without dead ends: 146 [2022-04-06 16:46:48,666 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 354 GetRequests, 313 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 317 ImplicationChecksByTransitivity, 9.0s TimeCoverageRelationStatistics Valid=280, Invalid=1526, Unknown=0, NotChecked=0, Total=1806 [2022-04-06 16:46:48,666 INFO L913 BasicCegarLoop]: 81 mSDtfsCounter, 65 mSDsluCounter, 362 mSDsCounter, 0 mSdLazyCounter, 289 mSolverCounterSat, 96 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 69 SdHoareTripleChecker+Valid, 443 SdHoareTripleChecker+Invalid, 653 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 96 IncrementalHoareTripleChecker+Valid, 289 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 268 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-04-06 16:46:48,666 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [69 Valid, 443 Invalid, 653 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [96 Valid, 289 Invalid, 0 Unknown, 268 Unchecked, 0.5s Time] [2022-04-06 16:46:48,666 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2022-04-06 16:46:48,688 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 146. [2022-04-06 16:46:48,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 146 states, 85 states have (on average 1.035294117647059) internal successors, (88), 85 states have internal predecessors, (88), 46 states have call successors, (46), 15 states have call predecessors, (46), 14 states have return successors, (45), 45 states have call predecessors, (45), 45 states have call successors, (45) [2022-04-06 16:46:48,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 179 transitions. [2022-04-06 16:46:48,689 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 179 transitions. Word has length 185 [2022-04-06 16:46:48,689 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 16:46:48,689 INFO L478 AbstractCegarLoop]: Abstraction has 146 states and 179 transitions. [2022-04-06 16:46:48,689 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 2.7777777777777777) internal successors, (50), 18 states have internal predecessors, (50), 9 states have call successors, (31), 2 states have call predecessors, (31), 2 states have return successors, (29), 8 states have call predecessors, (29), 8 states have call successors, (29) [2022-04-06 16:46:48,689 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 179 transitions. [2022-04-06 16:46:48,690 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 208 [2022-04-06 16:46:48,690 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 16:46:48,690 INFO L499 BasicCegarLoop]: trace histogram [29, 28, 28, 8, 8, 7, 7, 7, 7, 7, 7, 7, 5, 5, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-06 16:46:48,709 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2022-04-06 16:46:48,903 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 16:46:48,903 INFO L403 AbstractCegarLoop]: === Iteration 25 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 16:46:48,904 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 16:46:48,904 INFO L85 PathProgramCache]: Analyzing trace with hash 294904993, now seen corresponding path program 5 times [2022-04-06 16:46:48,904 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-06 16:46:48,904 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [439834757] [2022-04-06 16:46:48,904 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-04-06 16:46:48,904 INFO L85 PathProgramCache]: Analyzing trace with hash 294904993, now seen corresponding path program 6 times [2022-04-06 16:46:48,904 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 16:46:48,904 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [370481872] [2022-04-06 16:46:48,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 16:46:48,904 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 16:46:48,910 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-04-06 16:46:48,910 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1904171796] [2022-04-06 16:46:48,910 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-04-06 16:46:48,911 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 16:46:48,911 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-06 16:46:48,927 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-06 16:46:48,928 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2022-04-06 16:46:48,988 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2022-04-06 16:46:48,988 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-06 16:46:48,989 INFO L263 TraceCheckSpWp]: Trace formula consists of 278 conjuncts, 17 conjunts are in the unsatisfiable core [2022-04-06 16:46:49,001 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-06 16:46:49,455 INFO L134 CoverageAnalysis]: Checked inductivity of 1760 backedges. 144 proven. 53 refuted. 0 times theorem prover too weak. 1563 trivial. 0 not checked. [2022-04-06 16:46:49,455 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-06 16:46:49,946 INFO L134 CoverageAnalysis]: Checked inductivity of 1760 backedges. 107 proven. 90 refuted. 0 times theorem prover too weak. 1563 trivial. 0 not checked. [2022-04-06 16:46:49,946 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 16:46:49,946 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [370481872] [2022-04-06 16:46:49,946 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-04-06 16:46:49,946 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1904171796] [2022-04-06 16:46:49,946 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1904171796] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-06 16:46:49,946 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-04-06 16:46:49,946 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 26 [2022-04-06 16:46:49,947 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-06 16:46:49,947 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [439834757] [2022-04-06 16:46:49,947 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [439834757] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 16:46:49,947 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 16:46:49,947 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2022-04-06 16:46:49,947 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [121704867] [2022-04-06 16:46:49,947 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 16:46:49,947 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-04-06 16:46:49,947 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-06 16:46:49,947 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-04-06 16:46:49,948 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=560, Unknown=0, NotChecked=0, Total=650 [2022-04-06 16:46:49,948 INFO L87 Difference]: Start difference. First operand 146 states and 179 transitions. Second operand has 15 states, 15 states have (on average 3.1333333333333333) internal successors, (47), 15 states have internal predecessors, (47), 7 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (21), 6 states have call predecessors, (21), 6 states have call successors, (21) [2022-04-06 16:46:50,319 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 16:46:50,319 INFO L93 Difference]: Finished difference Result 158 states and 188 transitions. [2022-04-06 16:46:50,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-04-06 16:46:50,320 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 3.1333333333333333) internal successors, (47), 15 states have internal predecessors, (47), 7 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (21), 6 states have call predecessors, (21), 6 states have call successors, (21) Word has length 207 [2022-04-06 16:46:50,320 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 16:46:50,320 INFO L225 Difference]: With dead ends: 158 [2022-04-06 16:46:50,320 INFO L226 Difference]: Without dead ends: 0 [2022-04-06 16:46:50,321 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 424 GetRequests, 389 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 218 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=247, Invalid=1085, Unknown=0, NotChecked=0, Total=1332 [2022-04-06 16:46:50,321 INFO L913 BasicCegarLoop]: 57 mSDtfsCounter, 38 mSDsluCounter, 190 mSDsCounter, 0 mSdLazyCounter, 334 mSolverCounterSat, 79 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 247 SdHoareTripleChecker+Invalid, 413 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 79 IncrementalHoareTripleChecker+Valid, 334 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-04-06 16:46:50,322 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [38 Valid, 247 Invalid, 413 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [79 Valid, 334 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-04-06 16:46:50,322 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-04-06 16:46:50,322 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-04-06 16:46:50,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-06 16:46:50,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-04-06 16:46:50,322 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 207 [2022-04-06 16:46:50,322 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 16:46:50,322 INFO L478 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-04-06 16:46:50,322 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 3.1333333333333333) internal successors, (47), 15 states have internal predecessors, (47), 7 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (21), 6 states have call predecessors, (21), 6 states have call successors, (21) [2022-04-06 16:46:50,322 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-04-06 16:46:50,322 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-06 16:46:50,324 INFO L788 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-04-06 16:46:50,342 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0 [2022-04-06 16:46:50,526 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2022-04-06 16:46:50,528 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2022-04-06 16:47:18,600 WARN L232 SmtUtils]: Spent 23.74s on a formula simplification. DAG size of input: 171 DAG size of output: 171 (called from [L 182] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.or) [2022-04-06 16:47:33,539 WARN L232 SmtUtils]: Spent 13.69s on a formula simplification. DAG size of input: 197 DAG size of output: 107 (called from [L 149] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.combineInter) [2022-04-06 16:47:44,827 WARN L232 SmtUtils]: Spent 10.06s on a formula simplification. DAG size of input: 197 DAG size of output: 107 (called from [L 149] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.combineInter) [2022-04-06 16:48:02,135 WARN L232 SmtUtils]: Spent 15.36s on a formula simplification. DAG size of input: 206 DAG size of output: 83 (called from [L 149] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.combineInter) [2022-04-06 16:48:10,220 WARN L232 SmtUtils]: Spent 8.08s on a formula simplification. DAG size of input: 197 DAG size of output: 103 (called from [L 149] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.combineInter) [2022-04-06 16:48:20,563 WARN L232 SmtUtils]: Spent 7.85s on a formula simplification. DAG size of input: 197 DAG size of output: 103 (called from [L 149] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.combineInter) [2022-04-06 16:48:32,700 WARN L232 SmtUtils]: Spent 12.13s on a formula simplification. DAG size of input: 197 DAG size of output: 103 (called from [L 149] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.combineInter) [2022-04-06 16:48:32,704 INFO L882 garLoopResultBuilder]: For program point reach_errorEXIT(line 4) no Hoare annotation was computed. [2022-04-06 16:48:32,704 INFO L882 garLoopResultBuilder]: For program point reach_errorENTRY(line 4) no Hoare annotation was computed. [2022-04-06 16:48:32,704 INFO L882 garLoopResultBuilder]: For program point reach_errorFINAL(line 4) no Hoare annotation was computed. [2022-04-06 16:48:32,704 INFO L885 garLoopResultBuilder]: At program point assume_abort_if_notENTRY(lines 7 9) the Hoare annotation is: true [2022-04-06 16:48:32,704 INFO L878 garLoopResultBuilder]: At program point L8(line 8) the Hoare annotation is: (= assume_abort_if_not_~cond |assume_abort_if_not_#in~cond|) [2022-04-06 16:48:32,704 INFO L878 garLoopResultBuilder]: At program point L8-2(lines 7 9) the Hoare annotation is: (and (not (= |assume_abort_if_not_#in~cond| 0)) (= assume_abort_if_not_~cond |assume_abort_if_not_#in~cond|)) [2022-04-06 16:48:32,705 INFO L878 garLoopResultBuilder]: At program point assume_abort_if_notEXIT(lines 7 9) the Hoare annotation is: (and (not (= |assume_abort_if_not_#in~cond| 0)) (= assume_abort_if_not_~cond |assume_abort_if_not_#in~cond|)) [2022-04-06 16:48:32,705 INFO L878 garLoopResultBuilder]: At program point L35-2(lines 35 73) the Hoare annotation is: (let ((.cse2 (= main_~a~0 main_~y~0)) (.cse6 (= main_~r~0 0)) (.cse8 (= main_~s~0 1)) (.cse10 (= main_~a~0 main_~x~0)) (.cse12 (* main_~p~0 main_~x~0)) (.cse7 (<= main_~y~0 2)) (.cse0 (= main_~p~0 0)) (.cse1 (= main_~r~0 1)) (.cse3 (<= main_~c~0 2)) (.cse9 (<= 1 main_~y~0)) (.cse5 (<= main_~x~0 2))) (or (and (<= 1 main_~c~0) (= main_~s~0 0) .cse0 .cse1 .cse2 (= main_~b~0 main_~x~0) .cse3 (< main_~x~0 main_~a~0) (<= main_~a~0 2) (<= 1 main_~b~0) (= main_~q~0 1)) (let ((.cse4 (* main_~y~0 2))) (and (<= .cse4 main_~x~0) .cse0 (= main_~x~0 (+ main_~b~0 .cse4)) .cse1 .cse2 (= (+ (* main_~p~0 2) main_~q~0) 1) (< main_~x~0 (* main_~y~0 3)) .cse5 (= (+ main_~s~0 (* main_~r~0 2)) 0))) (and .cse6 .cse7 .cse8 (<= 1 main_~a~0) (= main_~b~0 main_~y~0) (= main_~q~0 0) .cse9 .cse10 .cse5 (= main_~p~0 1)) (let ((.cse11 (* main_~x~0 2))) (and .cse6 (= (+ .cse11 main_~b~0) main_~y~0) .cse7 .cse8 (< main_~x~0 main_~y~0) (= main_~x~0 .cse12) (= (+ main_~q~0 (* main_~p~0 (div .cse11 main_~x~0))) 0) .cse10 (< main_~y~0 (* main_~x~0 3)))) (let ((.cse13 (* main_~a~0 main_~s~0))) (and (= (+ main_~y~0 .cse12) main_~a~0) (<= 1 main_~x~0) .cse7 .cse0 (= main_~b~0 (+ main_~x~0 .cse13)) .cse1 .cse3 (= main_~q~0 (+ (* main_~p~0 main_~s~0) 1)) .cse9 (not (<= 0 (+ main_~x~0 (* 2 .cse13)))) .cse5)))) [2022-04-06 16:48:32,705 INFO L878 garLoopResultBuilder]: At program point L35-3(lines 35 73) the Hoare annotation is: (let ((.cse0 (= main_~r~0 0)) (.cse1 (= main_~s~0 1)) (.cse4 (<= main_~y~0 2)) (.cse2 (= main_~a~0 main_~x~0)) (.cse5 (= main_~p~0 0)) (.cse6 (= main_~r~0 1)) (.cse7 (= main_~a~0 main_~y~0)) (.cse8 (<= 1 main_~y~0))) (or (and .cse0 .cse1 (= main_~b~0 main_~y~0) (= main_~q~0 0) (= main_~y~0 0) .cse2 (= main_~p~0 1)) (let ((.cse3 (* main_~x~0 2))) (and .cse0 (= (+ .cse3 main_~b~0) main_~y~0) (<= 1 main_~x~0) .cse4 .cse1 (< main_~x~0 main_~y~0) (= main_~x~0 (* main_~p~0 main_~x~0)) (= (+ main_~q~0 (* main_~p~0 (div .cse3 main_~x~0))) 0) .cse2)) (and (= (+ main_~q~0 main_~p~0) 1) .cse4 .cse5 .cse6 .cse7 .cse8 (= main_~x~0 (+ main_~b~0 main_~a~0)) (= (+ main_~s~0 1) 0) .cse2) (let ((.cse9 (* main_~y~0 2))) (and (<= .cse9 main_~x~0) .cse5 (= main_~x~0 (+ main_~b~0 .cse9)) .cse6 .cse7 (= (+ (* main_~p~0 2) main_~q~0) 1) .cse8 (<= main_~x~0 2) (= (+ main_~s~0 (* main_~r~0 2)) 0))))) [2022-04-06 16:48:32,705 INFO L885 garLoopResultBuilder]: At program point mainEXIT(lines 18 76) the Hoare annotation is: true [2022-04-06 16:48:32,705 INFO L878 garLoopResultBuilder]: At program point L52(line 52) the Hoare annotation is: (let ((.cse26 (* main_~a~0 main_~s~0))) (let ((.cse1 (<= 1 main_~c~0)) (.cse7 (= main_~a~0 main_~y~0)) (.cse9 (= main_~b~0 main_~x~0)) (.cse11 (< main_~x~0 main_~a~0)) (.cse13 (<= main_~x~0 main_~a~0)) (.cse14 (<= 1 main_~b~0)) (.cse15 (= main_~q~0 1)) (.cse17 (= (+ main_~y~0 (* main_~p~0 main_~x~0)) main_~a~0)) (.cse18 (= main_~a~0 (+ main_~c~0 (* main_~b~0 main_~k~0)))) (.cse19 (<= 1 main_~x~0)) (.cse3 (= main_~p~0 0)) (.cse21 (= main_~b~0 (+ main_~x~0 .cse26))) (.cse5 (= main_~r~0 1)) (.cse8 (< main_~b~0 main_~c~0)) (.cse10 (<= main_~c~0 2)) (.cse22 (= main_~q~0 (+ (* main_~p~0 main_~s~0) 1))) (.cse23 (<= main_~a~0 2)) (.cse0 (= main_~v~0 (* main_~d~0 main_~b~0))) (.cse2 (<= main_~y~0 2)) (.cse16 (= main_~d~0 1)) (.cse27 (= main_~r~0 0)) (.cse4 (= main_~k~0 0)) (.cse28 (= main_~s~0 1)) (.cse6 (<= (div (* (- 1) main_~v~0) (- 2)) main_~b~0)) (.cse29 (<= 1 main_~a~0)) (.cse30 (= main_~b~0 main_~y~0)) (.cse12 (<= main_~b~0 (div main_~v~0 2))) (.cse31 (= main_~q~0 0)) (.cse24 (<= 1 main_~y~0)) (.cse32 (= main_~a~0 main_~x~0)) (.cse33 (= main_~c~0 main_~x~0)) (.cse25 (<= main_~x~0 2)) (.cse34 (= main_~p~0 1))) (or (and .cse0 .cse1 (= main_~b~0 (+ (* main_~q~0 main_~x~0) (* main_~y~0 main_~s~0))) .cse2 .cse3 .cse4 .cse5 .cse6 .cse7 .cse8 .cse9 .cse10 .cse11 .cse12 .cse13 .cse14 .cse15) (and .cse0 .cse1 (= main_~s~0 0) .cse2 .cse3 .cse4 .cse5 .cse7 .cse9 .cse10 .cse16 .cse11 .cse13 .cse14 .cse15 (< main_~v~0 main_~c~0)) (and (= main_~b~0 main_~v~0) .cse17 .cse18 .cse19 .cse3 (exists ((aux_div_aux_div_main_~c~0_33_28 Int)) (let ((.cse20 (* 2 aux_div_aux_div_main_~c~0_33_28))) (and (<= .cse20 (div (+ 2 (* (- 1) main_~b~0)) 2)) (< (div (+ (- 2) main_~c~0) (- 2)) (+ 2 .cse20)) (< main_~b~0 aux_div_aux_div_main_~c~0_33_28) (< (div (+ (- 2) (* 5 aux_div_aux_div_main_~c~0_33_28)) (- 2)) 2)))) .cse21 .cse5 .cse8 .cse10 .cse22 .cse16 .cse23 .cse24 .cse25) (and .cse0 .cse17 .cse18 .cse19 .cse3 .cse21 .cse5 .cse6 .cse8 .cse10 .cse22 .cse23 .cse24 (not (<= 0 (+ main_~x~0 (* 2 .cse26)))) .cse25) (and .cse0 .cse27 .cse2 .cse4 .cse28 .cse29 .cse30 .cse16 .cse31 .cse24 .cse32 .cse33 .cse25 .cse34) (and .cse27 (<= (* main_~b~0 2) main_~c~0) .cse4 .cse28 .cse6 .cse29 .cse30 (= main_~d~0 2) .cse12 .cse31 .cse24 .cse32 .cse33 .cse25 .cse34)))) [2022-04-06 16:48:32,705 INFO L878 garLoopResultBuilder]: At program point L36(lines 36 37) the Hoare annotation is: (let ((.cse2 (= main_~a~0 main_~y~0)) (.cse6 (= main_~r~0 0)) (.cse8 (= main_~s~0 1)) (.cse10 (= main_~a~0 main_~x~0)) (.cse12 (* main_~p~0 main_~x~0)) (.cse7 (<= main_~y~0 2)) (.cse0 (= main_~p~0 0)) (.cse1 (= main_~r~0 1)) (.cse3 (<= main_~c~0 2)) (.cse9 (<= 1 main_~y~0)) (.cse5 (<= main_~x~0 2))) (or (and (<= 1 main_~c~0) (= main_~s~0 0) .cse0 .cse1 .cse2 (= main_~b~0 main_~x~0) .cse3 (< main_~x~0 main_~a~0) (<= main_~a~0 2) (<= 1 main_~b~0) (= main_~q~0 1)) (let ((.cse4 (* main_~y~0 2))) (and (<= .cse4 main_~x~0) .cse0 (= main_~x~0 (+ main_~b~0 .cse4)) .cse1 .cse2 (= (+ (* main_~p~0 2) main_~q~0) 1) (< main_~x~0 (* main_~y~0 3)) .cse5 (= (+ main_~s~0 (* main_~r~0 2)) 0))) (and .cse6 .cse7 .cse8 (<= 1 main_~a~0) (= main_~b~0 main_~y~0) (= main_~q~0 0) .cse9 .cse10 .cse5 (= main_~p~0 1)) (let ((.cse11 (* main_~x~0 2))) (and .cse6 (= (+ .cse11 main_~b~0) main_~y~0) .cse7 .cse8 (< main_~x~0 main_~y~0) (= main_~x~0 .cse12) (= (+ main_~q~0 (* main_~p~0 (div .cse11 main_~x~0))) 0) .cse10 (< main_~y~0 (* main_~x~0 3)))) (let ((.cse13 (* main_~a~0 main_~s~0))) (and (= (+ main_~y~0 .cse12) main_~a~0) (<= 1 main_~x~0) .cse7 .cse0 (= main_~b~0 (+ main_~x~0 .cse13)) .cse1 .cse3 (= main_~q~0 (+ (* main_~p~0 main_~s~0) 1)) .cse9 (not (<= 0 (+ main_~x~0 (* 2 .cse13)))) .cse5)))) [2022-04-06 16:48:32,705 INFO L878 garLoopResultBuilder]: At program point L24(line 24) the Hoare annotation is: (and (<= 0 main_~x~0) (<= main_~x~0 2)) [2022-04-06 16:48:32,705 INFO L878 garLoopResultBuilder]: At program point L24-1(line 24) the Hoare annotation is: (and (<= 0 main_~y~0) (<= main_~y~0 2) (<= 0 main_~x~0) (<= main_~x~0 2)) [2022-04-06 16:48:32,705 INFO L878 garLoopResultBuilder]: At program point L53(lines 49 59) the Hoare annotation is: (let ((.cse2 (= main_~s~0 0)) (.cse5 (= main_~a~0 main_~y~0)) (.cse7 (= main_~b~0 main_~x~0)) (.cse9 (< main_~x~0 main_~a~0)) (.cse11 (<= 1 main_~b~0)) (.cse12 (= main_~q~0 1)) (.cse1 (= main_~a~0 (+ main_~c~0 (* main_~b~0 main_~k~0)))) (.cse3 (= main_~p~0 0)) (.cse4 (= main_~r~0 1)) (.cse6 (< main_~b~0 main_~c~0)) (.cse8 (<= main_~c~0 2)) (.cse10 (<= main_~a~0 2)) (.cse13 (<= (div (* (- 1) main_~v~0) (- 2)) main_~b~0)) (.cse14 (<= main_~b~0 (div main_~v~0 2))) (.cse0 (= main_~v~0 (* main_~d~0 main_~b~0))) (.cse18 (= main_~r~0 0)) (.cse19 (<= main_~y~0 2)) (.cse20 (= main_~k~0 0)) (.cse21 (= main_~s~0 1)) (.cse22 (<= 1 main_~a~0)) (.cse23 (= main_~b~0 main_~y~0)) (.cse24 (= main_~q~0 0)) (.cse16 (<= 1 main_~y~0)) (.cse25 (= main_~a~0 main_~x~0)) (.cse26 (= main_~c~0 main_~x~0)) (.cse17 (<= main_~x~0 2)) (.cse27 (= main_~p~0 1))) (or (and (= main_~b~0 main_~v~0) .cse0 .cse1 .cse2 .cse3 .cse4 .cse5 .cse6 .cse7 .cse8 .cse9 .cse10 .cse11 .cse12) (and .cse0 .cse1 .cse2 .cse3 .cse4 .cse13 .cse5 .cse6 .cse7 .cse8 .cse9 .cse10 .cse14 .cse11 .cse12) (let ((.cse15 (* main_~a~0 main_~s~0))) (and .cse0 (<= main_~v~0 main_~b~0) (= (+ main_~y~0 (* main_~p~0 main_~x~0)) main_~a~0) .cse1 (<= 1 main_~x~0) .cse3 (= main_~b~0 (+ main_~x~0 .cse15)) .cse4 .cse6 .cse8 (= main_~q~0 (+ (* main_~p~0 main_~s~0) 1)) .cse10 .cse16 (not (<= 0 (+ main_~x~0 (* 2 .cse15)))) .cse17)) (and .cse18 (<= (* main_~b~0 2) main_~c~0) .cse19 .cse20 .cse21 .cse13 .cse22 .cse23 (= main_~d~0 2) .cse14 .cse24 .cse16 .cse25 .cse26 .cse17 .cse27) (and .cse0 .cse18 .cse19 .cse20 .cse21 .cse22 .cse23 (= main_~d~0 1) .cse24 .cse16 .cse25 .cse26 .cse17 .cse27))) [2022-04-06 16:48:32,705 INFO L878 garLoopResultBuilder]: At program point L49-2(lines 49 59) the Hoare annotation is: (let ((.cse27 (* main_~a~0 main_~s~0))) (let ((.cse1 (<= 1 main_~c~0)) (.cse2 (= main_~s~0 0)) (.cse7 (= main_~a~0 main_~y~0)) (.cse8 (= main_~b~0 main_~x~0)) (.cse11 (< main_~x~0 main_~a~0)) (.cse12 (<= main_~x~0 main_~a~0)) (.cse13 (<= 1 main_~b~0)) (.cse14 (= main_~q~0 1)) (.cse18 (= (+ main_~y~0 (* main_~p~0 main_~x~0)) main_~a~0)) (.cse19 (= main_~a~0 (+ main_~c~0 (* main_~b~0 main_~k~0)))) (.cse20 (<= 1 main_~x~0)) (.cse4 (= main_~p~0 0)) (.cse22 (= main_~b~0 (+ main_~x~0 .cse27))) (.cse6 (= main_~r~0 1)) (.cse16 (< main_~b~0 main_~c~0)) (.cse9 (<= main_~c~0 2)) (.cse23 (= main_~q~0 (+ (* main_~p~0 main_~s~0) 1))) (.cse24 (<= main_~a~0 2)) (.cse0 (= main_~v~0 (* main_~d~0 main_~b~0))) (.cse3 (<= main_~y~0 2)) (.cse10 (= main_~d~0 1)) (.cse28 (= main_~r~0 0)) (.cse5 (= main_~k~0 0)) (.cse29 (= main_~s~0 1)) (.cse15 (<= (div (* (- 1) main_~v~0) (- 2)) main_~b~0)) (.cse30 (<= 1 main_~a~0)) (.cse31 (= main_~b~0 main_~y~0)) (.cse17 (<= main_~b~0 (div main_~v~0 2))) (.cse32 (= main_~q~0 0)) (.cse25 (<= 1 main_~y~0)) (.cse33 (= main_~a~0 main_~x~0)) (.cse34 (= main_~c~0 main_~x~0)) (.cse26 (<= main_~x~0 2)) (.cse35 (= main_~p~0 1))) (or (and .cse0 .cse1 .cse2 .cse3 .cse4 .cse5 .cse6 .cse7 .cse8 .cse9 .cse10 .cse11 .cse12 .cse13 .cse14 (< main_~v~0 main_~c~0)) (and .cse0 .cse1 .cse2 .cse3 .cse4 .cse5 .cse6 .cse15 .cse7 .cse16 .cse8 .cse9 .cse11 .cse17 .cse12 .cse13 .cse14) (and (= main_~b~0 main_~v~0) .cse18 .cse19 .cse20 .cse4 (exists ((aux_div_aux_div_main_~c~0_33_28 Int)) (let ((.cse21 (* 2 aux_div_aux_div_main_~c~0_33_28))) (and (<= .cse21 (div (+ 2 (* (- 1) main_~b~0)) 2)) (< (div (+ (- 2) main_~c~0) (- 2)) (+ 2 .cse21)) (< main_~b~0 aux_div_aux_div_main_~c~0_33_28) (< (div (+ (- 2) (* 5 aux_div_aux_div_main_~c~0_33_28)) (- 2)) 2)))) .cse22 .cse6 .cse16 .cse9 .cse23 .cse10 .cse24 .cse25 .cse26) (and .cse0 .cse18 .cse19 .cse20 .cse4 .cse22 .cse6 .cse15 .cse16 .cse9 .cse23 .cse24 .cse25 (not (<= 0 (+ main_~x~0 (* 2 .cse27)))) .cse26) (and .cse0 .cse28 .cse3 .cse5 .cse29 .cse30 .cse31 .cse10 .cse32 .cse25 .cse33 .cse34 .cse26 .cse35) (and .cse28 (<= (* main_~b~0 2) main_~c~0) .cse5 .cse29 .cse15 .cse30 .cse31 (= main_~d~0 2) .cse17 .cse32 .cse25 .cse33 .cse34 .cse26 .cse35)))) [2022-04-06 16:48:32,706 INFO L878 garLoopResultBuilder]: At program point L49-3(lines 49 59) the Hoare annotation is: (let ((.cse2 (<= (div (* (- 1) main_~v~0) (- 2)) main_~b~0)) (.cse0 (= main_~v~0 (* main_~d~0 main_~b~0))) (.cse4 (= main_~r~0 0)) (.cse5 (<= main_~y~0 2)) (.cse1 (= main_~k~0 0)) (.cse6 (= main_~s~0 1)) (.cse7 (<= 1 main_~a~0)) (.cse8 (= main_~b~0 main_~y~0)) (.cse9 (= main_~q~0 0)) (.cse3 (not (<= (* main_~v~0 2) main_~c~0))) (.cse10 (<= 1 main_~y~0)) (.cse11 (= main_~a~0 main_~x~0)) (.cse12 (= main_~c~0 main_~x~0)) (.cse13 (<= main_~x~0 2)) (.cse14 (= main_~p~0 1))) (or (and .cse0 (= main_~b~0 (+ (* main_~q~0 main_~x~0) (* main_~y~0 main_~s~0))) (= main_~p~0 0) .cse1 (= main_~c~0 main_~y~0) (< main_~x~0 main_~y~0) (= main_~r~0 1) .cse2 (= main_~a~0 main_~y~0) (= main_~b~0 main_~x~0) (<= main_~a~0 2) .cse3 (= main_~q~0 1)) (and .cse4 (<= (* main_~b~0 2) main_~c~0) .cse5 .cse1 .cse6 .cse2 .cse7 .cse8 (= main_~d~0 2) .cse9 .cse3 .cse10 .cse11 .cse12 .cse13 .cse14) (and .cse0 .cse4 (<= main_~v~0 main_~b~0) .cse5 .cse1 .cse6 .cse7 .cse8 .cse9 .cse3 .cse10 .cse11 .cse12 .cse13 .cse14))) [2022-04-06 16:48:32,706 INFO L885 garLoopResultBuilder]: At program point L74(line 74) the Hoare annotation is: true [2022-04-06 16:48:32,706 INFO L878 garLoopResultBuilder]: At program point L25(line 25) the Hoare annotation is: (and (<= 0 main_~y~0) (<= 1 main_~x~0) (<= main_~y~0 2) (<= main_~x~0 2)) [2022-04-06 16:48:32,706 INFO L878 garLoopResultBuilder]: At program point L50(line 50) the Hoare annotation is: (let ((.cse27 (* main_~a~0 main_~s~0))) (let ((.cse1 (<= 1 main_~c~0)) (.cse2 (= main_~s~0 0)) (.cse7 (= main_~a~0 main_~y~0)) (.cse8 (= main_~b~0 main_~x~0)) (.cse11 (< main_~x~0 main_~a~0)) (.cse12 (<= main_~x~0 main_~a~0)) (.cse13 (<= 1 main_~b~0)) (.cse14 (= main_~q~0 1)) (.cse18 (= (+ main_~y~0 (* main_~p~0 main_~x~0)) main_~a~0)) (.cse19 (= main_~a~0 (+ main_~c~0 (* main_~b~0 main_~k~0)))) (.cse20 (<= 1 main_~x~0)) (.cse4 (= main_~p~0 0)) (.cse22 (= main_~b~0 (+ main_~x~0 .cse27))) (.cse6 (= main_~r~0 1)) (.cse16 (< main_~b~0 main_~c~0)) (.cse9 (<= main_~c~0 2)) (.cse23 (= main_~q~0 (+ (* main_~p~0 main_~s~0) 1))) (.cse24 (<= main_~a~0 2)) (.cse0 (= main_~v~0 (* main_~d~0 main_~b~0))) (.cse3 (<= main_~y~0 2)) (.cse10 (= main_~d~0 1)) (.cse28 (= main_~r~0 0)) (.cse5 (= main_~k~0 0)) (.cse29 (= main_~s~0 1)) (.cse15 (<= (div (* (- 1) main_~v~0) (- 2)) main_~b~0)) (.cse30 (<= 1 main_~a~0)) (.cse31 (= main_~b~0 main_~y~0)) (.cse17 (<= main_~b~0 (div main_~v~0 2))) (.cse32 (= main_~q~0 0)) (.cse25 (<= 1 main_~y~0)) (.cse33 (= main_~a~0 main_~x~0)) (.cse34 (= main_~c~0 main_~x~0)) (.cse26 (<= main_~x~0 2)) (.cse35 (= main_~p~0 1))) (or (and .cse0 .cse1 .cse2 .cse3 .cse4 .cse5 .cse6 .cse7 .cse8 .cse9 .cse10 .cse11 .cse12 .cse13 .cse14 (< main_~v~0 main_~c~0)) (and .cse0 .cse1 .cse2 .cse3 .cse4 .cse5 .cse6 .cse15 .cse7 .cse16 .cse8 .cse9 .cse11 .cse17 .cse12 .cse13 .cse14) (and (= main_~b~0 main_~v~0) .cse18 .cse19 .cse20 .cse4 (exists ((aux_div_aux_div_main_~c~0_33_28 Int)) (let ((.cse21 (* 2 aux_div_aux_div_main_~c~0_33_28))) (and (<= .cse21 (div (+ 2 (* (- 1) main_~b~0)) 2)) (< (div (+ (- 2) main_~c~0) (- 2)) (+ 2 .cse21)) (< main_~b~0 aux_div_aux_div_main_~c~0_33_28) (< (div (+ (- 2) (* 5 aux_div_aux_div_main_~c~0_33_28)) (- 2)) 2)))) .cse22 .cse6 .cse16 .cse9 .cse23 .cse10 .cse24 .cse25 .cse26) (and .cse0 .cse18 .cse19 .cse20 .cse4 .cse22 .cse6 .cse15 .cse16 .cse9 .cse23 .cse24 .cse25 (not (<= 0 (+ main_~x~0 (* 2 .cse27)))) .cse26) (and .cse0 .cse28 .cse3 .cse5 .cse29 .cse30 .cse31 .cse10 .cse32 .cse25 .cse33 .cse34 .cse26 .cse35) (and .cse28 (<= (* main_~b~0 2) main_~c~0) .cse5 .cse29 .cse15 .cse30 .cse31 (= main_~d~0 2) .cse17 .cse32 .cse25 .cse33 .cse34 .cse26 .cse35)))) [2022-04-06 16:48:32,706 INFO L878 garLoopResultBuilder]: At program point L50-1(line 50) the Hoare annotation is: (let ((.cse27 (* main_~a~0 main_~s~0))) (let ((.cse1 (<= 1 main_~c~0)) (.cse2 (= main_~s~0 0)) (.cse7 (= main_~a~0 main_~y~0)) (.cse8 (= main_~b~0 main_~x~0)) (.cse11 (< main_~x~0 main_~a~0)) (.cse12 (<= main_~x~0 main_~a~0)) (.cse13 (<= 1 main_~b~0)) (.cse14 (= main_~q~0 1)) (.cse18 (= (+ main_~y~0 (* main_~p~0 main_~x~0)) main_~a~0)) (.cse19 (= main_~a~0 (+ main_~c~0 (* main_~b~0 main_~k~0)))) (.cse20 (<= 1 main_~x~0)) (.cse4 (= main_~p~0 0)) (.cse22 (= main_~b~0 (+ main_~x~0 .cse27))) (.cse6 (= main_~r~0 1)) (.cse16 (< main_~b~0 main_~c~0)) (.cse9 (<= main_~c~0 2)) (.cse23 (= main_~q~0 (+ (* main_~p~0 main_~s~0) 1))) (.cse24 (<= main_~a~0 2)) (.cse0 (= main_~v~0 (* main_~d~0 main_~b~0))) (.cse3 (<= main_~y~0 2)) (.cse10 (= main_~d~0 1)) (.cse28 (= main_~r~0 0)) (.cse5 (= main_~k~0 0)) (.cse29 (= main_~s~0 1)) (.cse15 (<= (div (* (- 1) main_~v~0) (- 2)) main_~b~0)) (.cse30 (<= 1 main_~a~0)) (.cse31 (= main_~b~0 main_~y~0)) (.cse17 (<= main_~b~0 (div main_~v~0 2))) (.cse32 (= main_~q~0 0)) (.cse25 (<= 1 main_~y~0)) (.cse33 (= main_~a~0 main_~x~0)) (.cse34 (= main_~c~0 main_~x~0)) (.cse26 (<= main_~x~0 2)) (.cse35 (= main_~p~0 1))) (or (and .cse0 .cse1 .cse2 .cse3 .cse4 .cse5 .cse6 .cse7 .cse8 .cse9 .cse10 .cse11 .cse12 .cse13 .cse14 (< main_~v~0 main_~c~0)) (and .cse0 .cse1 .cse2 .cse3 .cse4 .cse5 .cse6 .cse15 .cse7 .cse16 .cse8 .cse9 .cse11 .cse17 .cse12 .cse13 .cse14) (and (= main_~b~0 main_~v~0) .cse18 .cse19 .cse20 .cse4 (exists ((aux_div_aux_div_main_~c~0_33_28 Int)) (let ((.cse21 (* 2 aux_div_aux_div_main_~c~0_33_28))) (and (<= .cse21 (div (+ 2 (* (- 1) main_~b~0)) 2)) (< (div (+ (- 2) main_~c~0) (- 2)) (+ 2 .cse21)) (< main_~b~0 aux_div_aux_div_main_~c~0_33_28) (< (div (+ (- 2) (* 5 aux_div_aux_div_main_~c~0_33_28)) (- 2)) 2)))) .cse22 .cse6 .cse16 .cse9 .cse23 .cse10 .cse24 .cse25 .cse26) (and .cse0 .cse18 .cse19 .cse20 .cse4 .cse22 .cse6 .cse15 .cse16 .cse9 .cse23 .cse24 .cse25 (not (<= 0 (+ main_~x~0 (* 2 .cse27)))) .cse26) (and .cse0 .cse28 .cse3 .cse5 .cse29 .cse30 .cse31 .cse10 .cse32 .cse25 .cse33 .cse34 .cse26 .cse35) (and .cse28 (<= (* main_~b~0 2) main_~c~0) .cse5 .cse29 .cse15 .cse30 .cse31 (= main_~d~0 2) .cse17 .cse32 .cse25 .cse33 .cse34 .cse26 .cse35)))) [2022-04-06 16:48:32,706 INFO L885 garLoopResultBuilder]: At program point mainFINAL(lines 18 76) the Hoare annotation is: true [2022-04-06 16:48:32,706 INFO L878 garLoopResultBuilder]: At program point L42-2(lines 42 62) the Hoare annotation is: (let ((.cse21 (* main_~b~0 main_~k~0))) (let ((.cse24 (+ main_~c~0 .cse21))) (let ((.cse14 (= main_~s~0 0)) (.cse15 (= main_~p~0 0)) (.cse28 (= main_~k~0 0)) (.cse17 (= main_~r~0 1)) (.cse18 (= main_~a~0 main_~y~0)) (.cse26 (< main_~b~0 main_~c~0)) (.cse19 (= main_~b~0 main_~x~0)) (.cse27 (<= main_~c~0 2)) (.cse20 (<= main_~a~0 2)) (.cse22 (<= 1 main_~b~0)) (.cse23 (= main_~q~0 1)) (.cse0 (= main_~v~0 (* main_~d~0 main_~b~0))) (.cse1 (= main_~r~0 0)) (.cse2 (= main_~x~0 .cse24)) (.cse3 (<= main_~y~0 2)) (.cse4 (not (<= .cse21 main_~c~0))) (.cse5 (= main_~s~0 1)) (.cse6 (<= (div (* (- 1) main_~v~0) (- 2)) main_~b~0)) (.cse7 (<= 1 main_~a~0)) (.cse8 (= main_~b~0 main_~y~0)) (.cse9 (= main_~q~0 0)) (.cse10 (<= 1 main_~y~0)) (.cse11 (= main_~a~0 main_~x~0)) (.cse12 (<= main_~x~0 2)) (.cse13 (= main_~p~0 1))) (or (and (<= main_~b~0 (div (div (+ (* (- 1) main_~c~0) 2) 2) 2)) .cse0 .cse1 .cse2 .cse3 .cse4 .cse5 .cse6 .cse7 .cse8 .cse9 .cse10 .cse11 .cse12 .cse13) (let ((.cse16 (* main_~b~0 2))) (and .cse0 .cse14 .cse15 (= (+ main_~c~0 .cse16) main_~y~0) (< main_~x~0 main_~y~0) .cse17 .cse6 .cse18 .cse19 .cse20 (= .cse21 .cse16) .cse22 .cse23)) (and .cse0 .cse1 (<= main_~v~0 main_~b~0) .cse2 .cse3 .cse4 .cse5 .cse6 .cse7 .cse8 .cse9 .cse10 .cse11 .cse12 .cse13) (let ((.cse25 (* main_~a~0 main_~s~0))) (and (= (+ main_~y~0 (* main_~p~0 main_~x~0)) main_~a~0) (= main_~a~0 .cse24) (<= 1 main_~x~0) .cse15 (= main_~b~0 (+ main_~x~0 .cse25)) .cse17 .cse26 .cse27 (= main_~q~0 (+ (* main_~p~0 main_~s~0) 1)) .cse20 .cse10 (not (<= 0 (+ main_~x~0 (* 2 .cse25)))) .cse12)) (and .cse1 .cse3 .cse28 .cse5 .cse7 .cse8 .cse9 .cse10 .cse11 (= main_~c~0 main_~x~0) .cse12 .cse13) (and .cse14 .cse15 .cse28 .cse17 .cse18 .cse26 .cse19 .cse27 (< main_~x~0 main_~a~0) .cse20 .cse22 .cse23) (and .cse0 .cse1 .cse2 .cse3 .cse4 .cse5 (<= main_~b~0 1) .cse6 .cse7 .cse8 .cse9 .cse10 .cse11 .cse12 .cse13))))) [2022-04-06 16:48:32,706 INFO L878 garLoopResultBuilder]: At program point L42-3(lines 42 62) the Hoare annotation is: (let ((.cse7 (* main_~b~0 main_~k~0)) (.cse8 (* main_~b~0 2))) (let ((.cse5 (+ main_~c~0 .cse8)) (.cse18 (= main_~b~0 main_~y~0)) (.cse0 (= main_~v~0 (* main_~d~0 main_~b~0))) (.cse11 (= main_~r~0 0)) (.cse1 (= main_~b~0 (+ (* main_~q~0 main_~x~0) (* main_~y~0 main_~s~0)))) (.cse12 (= main_~x~0 (+ main_~c~0 .cse7))) (.cse2 (<= 1 main_~x~0)) (.cse3 (<= main_~b~0 2)) (.cse4 (<= main_~y~0 2)) (.cse13 (= main_~s~0 1)) (.cse14 (<= (div (* (- 1) main_~v~0) (- 2)) main_~b~0)) (.cse6 (not (<= main_~b~0 main_~c~0))) (.cse15 (= main_~q~0 0)) (.cse9 (<= 1 main_~y~0)) (.cse16 (= main_~a~0 main_~x~0)) (.cse10 (<= main_~x~0 2)) (.cse17 (= main_~p~0 1))) (or (and .cse0 (= main_~s~0 0) .cse1 .cse2 .cse3 .cse4 (= main_~p~0 0) (not (<= main_~a~0 main_~x~0)) (= main_~r~0 1) (< main_~x~0 .cse5) (= main_~a~0 main_~y~0) (= main_~b~0 main_~x~0) .cse6 (= .cse7 .cse8) .cse9 .cse10) (and .cse0 .cse11 .cse1 .cse12 .cse2 .cse3 .cse4 .cse13 (<= main_~b~0 1) .cse14 .cse6 .cse15 .cse9 .cse16 .cse10 .cse17) (and .cse0 (= .cse5 main_~x~0) .cse11 .cse2 .cse3 .cse4 .cse13 (<= 0 main_~c~0) .cse18 .cse6 (= main_~k~0 2) .cse15 .cse9 .cse16 .cse10 .cse17) (and .cse11 .cse4 (= main_~k~0 0) .cse13 (<= 1 main_~a~0) .cse18 .cse15 (< main_~c~0 main_~b~0) .cse16 (= main_~c~0 main_~x~0) .cse17) (and .cse0 .cse11 (<= main_~v~0 main_~b~0) .cse1 .cse12 .cse2 .cse3 .cse4 .cse13 .cse14 .cse6 .cse15 .cse9 .cse16 .cse10 .cse17) (and (<= main_~b~0 (div (div (+ (* (- 1) main_~c~0) 2) 2) 2)) .cse0 .cse11 .cse1 .cse12 .cse2 .cse3 .cse4 .cse13 .cse14 .cse6 .cse15 .cse9 .cse16 .cse10 .cse17)))) [2022-04-06 16:48:32,706 INFO L885 garLoopResultBuilder]: At program point mainENTRY(lines 18 76) the Hoare annotation is: true [2022-04-06 16:48:32,706 INFO L878 garLoopResultBuilder]: At program point L26(line 26) the Hoare annotation is: (and (<= 1 main_~x~0) (<= main_~y~0 2) (<= 1 main_~y~0) (<= main_~x~0 2)) [2022-04-06 16:48:32,706 INFO L885 garLoopResultBuilder]: At program point L22(line 22) the Hoare annotation is: true [2022-04-06 16:48:32,706 INFO L878 garLoopResultBuilder]: At program point L22-1(line 22) the Hoare annotation is: (and (<= 0 main_~x~0) (<= main_~x~0 2)) [2022-04-06 16:48:32,706 INFO L878 garLoopResultBuilder]: At program point L51(line 51) the Hoare annotation is: (let ((.cse26 (* main_~a~0 main_~s~0))) (let ((.cse1 (<= 1 main_~c~0)) (.cse7 (= main_~a~0 main_~y~0)) (.cse9 (= main_~b~0 main_~x~0)) (.cse11 (< main_~x~0 main_~a~0)) (.cse13 (<= main_~x~0 main_~a~0)) (.cse14 (<= 1 main_~b~0)) (.cse15 (= main_~q~0 1)) (.cse17 (= (+ main_~y~0 (* main_~p~0 main_~x~0)) main_~a~0)) (.cse18 (= main_~a~0 (+ main_~c~0 (* main_~b~0 main_~k~0)))) (.cse19 (<= 1 main_~x~0)) (.cse3 (= main_~p~0 0)) (.cse21 (= main_~b~0 (+ main_~x~0 .cse26))) (.cse5 (= main_~r~0 1)) (.cse8 (< main_~b~0 main_~c~0)) (.cse10 (<= main_~c~0 2)) (.cse22 (= main_~q~0 (+ (* main_~p~0 main_~s~0) 1))) (.cse23 (<= main_~a~0 2)) (.cse0 (= main_~v~0 (* main_~d~0 main_~b~0))) (.cse2 (<= main_~y~0 2)) (.cse16 (= main_~d~0 1)) (.cse27 (= main_~r~0 0)) (.cse4 (= main_~k~0 0)) (.cse28 (= main_~s~0 1)) (.cse6 (<= (div (* (- 1) main_~v~0) (- 2)) main_~b~0)) (.cse29 (<= 1 main_~a~0)) (.cse30 (= main_~b~0 main_~y~0)) (.cse12 (<= main_~b~0 (div main_~v~0 2))) (.cse31 (= main_~q~0 0)) (.cse24 (<= 1 main_~y~0)) (.cse32 (= main_~a~0 main_~x~0)) (.cse33 (= main_~c~0 main_~x~0)) (.cse25 (<= main_~x~0 2)) (.cse34 (= main_~p~0 1))) (or (and .cse0 .cse1 (= main_~b~0 (+ (* main_~q~0 main_~x~0) (* main_~y~0 main_~s~0))) .cse2 .cse3 .cse4 .cse5 .cse6 .cse7 .cse8 .cse9 .cse10 .cse11 .cse12 .cse13 .cse14 .cse15) (and .cse0 .cse1 (= main_~s~0 0) .cse2 .cse3 .cse4 .cse5 .cse7 .cse9 .cse10 .cse16 .cse11 .cse13 .cse14 .cse15 (< main_~v~0 main_~c~0)) (and (= main_~b~0 main_~v~0) .cse17 .cse18 .cse19 .cse3 (exists ((aux_div_aux_div_main_~c~0_33_28 Int)) (let ((.cse20 (* 2 aux_div_aux_div_main_~c~0_33_28))) (and (<= .cse20 (div (+ 2 (* (- 1) main_~b~0)) 2)) (< (div (+ (- 2) main_~c~0) (- 2)) (+ 2 .cse20)) (< main_~b~0 aux_div_aux_div_main_~c~0_33_28) (< (div (+ (- 2) (* 5 aux_div_aux_div_main_~c~0_33_28)) (- 2)) 2)))) .cse21 .cse5 .cse8 .cse10 .cse22 .cse16 .cse23 .cse24 .cse25) (and .cse0 .cse17 .cse18 .cse19 .cse3 .cse21 .cse5 .cse6 .cse8 .cse10 .cse22 .cse23 .cse24 (not (<= 0 (+ main_~x~0 (* 2 .cse26)))) .cse25) (and .cse0 .cse27 .cse2 .cse4 .cse28 .cse29 .cse30 .cse16 .cse31 .cse24 .cse32 .cse33 .cse25 .cse34) (and .cse27 (<= (* main_~b~0 2) main_~c~0) .cse4 .cse28 .cse6 .cse29 .cse30 (= main_~d~0 2) .cse12 .cse31 .cse24 .cse32 .cse33 .cse25 .cse34)))) [2022-04-06 16:48:32,707 INFO L878 garLoopResultBuilder]: At program point L43(lines 43 44) the Hoare annotation is: (let ((.cse21 (* main_~b~0 main_~k~0))) (let ((.cse24 (+ main_~c~0 .cse21))) (let ((.cse14 (= main_~s~0 0)) (.cse15 (= main_~p~0 0)) (.cse28 (= main_~k~0 0)) (.cse17 (= main_~r~0 1)) (.cse18 (= main_~a~0 main_~y~0)) (.cse26 (< main_~b~0 main_~c~0)) (.cse19 (= main_~b~0 main_~x~0)) (.cse27 (<= main_~c~0 2)) (.cse20 (<= main_~a~0 2)) (.cse22 (<= 1 main_~b~0)) (.cse23 (= main_~q~0 1)) (.cse0 (= main_~v~0 (* main_~d~0 main_~b~0))) (.cse1 (= main_~r~0 0)) (.cse2 (= main_~x~0 .cse24)) (.cse3 (<= main_~y~0 2)) (.cse4 (not (<= .cse21 main_~c~0))) (.cse5 (= main_~s~0 1)) (.cse6 (<= (div (* (- 1) main_~v~0) (- 2)) main_~b~0)) (.cse7 (<= 1 main_~a~0)) (.cse8 (= main_~b~0 main_~y~0)) (.cse9 (= main_~q~0 0)) (.cse10 (<= 1 main_~y~0)) (.cse11 (= main_~a~0 main_~x~0)) (.cse12 (<= main_~x~0 2)) (.cse13 (= main_~p~0 1))) (or (and (<= main_~b~0 (div (div (+ (* (- 1) main_~c~0) 2) 2) 2)) .cse0 .cse1 .cse2 .cse3 .cse4 .cse5 .cse6 .cse7 .cse8 .cse9 .cse10 .cse11 .cse12 .cse13) (let ((.cse16 (* main_~b~0 2))) (and .cse0 .cse14 .cse15 (= (+ main_~c~0 .cse16) main_~y~0) (< main_~x~0 main_~y~0) .cse17 .cse6 .cse18 .cse19 .cse20 (= .cse21 .cse16) .cse22 .cse23)) (and .cse0 .cse1 (<= main_~v~0 main_~b~0) .cse2 .cse3 .cse4 .cse5 .cse6 .cse7 .cse8 .cse9 .cse10 .cse11 .cse12 .cse13) (let ((.cse25 (* main_~a~0 main_~s~0))) (and (= (+ main_~y~0 (* main_~p~0 main_~x~0)) main_~a~0) (= main_~a~0 .cse24) (<= 1 main_~x~0) .cse15 (= main_~b~0 (+ main_~x~0 .cse25)) .cse17 .cse26 .cse27 (= main_~q~0 (+ (* main_~p~0 main_~s~0) 1)) .cse20 .cse10 (not (<= 0 (+ main_~x~0 (* 2 .cse25)))) .cse12)) (and .cse1 .cse3 .cse28 .cse5 .cse7 .cse8 .cse9 .cse10 .cse11 (= main_~c~0 main_~x~0) .cse12 .cse13) (and .cse14 .cse15 .cse28 .cse17 .cse18 .cse26 .cse19 .cse27 (< main_~x~0 main_~a~0) .cse20 .cse22 .cse23) (and .cse0 .cse1 .cse2 .cse3 .cse4 .cse5 (<= main_~b~0 1) .cse6 .cse7 .cse8 .cse9 .cse10 .cse11 .cse12 .cse13))))) [2022-04-06 16:48:32,707 INFO L885 garLoopResultBuilder]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2022-04-06 16:48:32,707 INFO L878 garLoopResultBuilder]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|)) [2022-04-06 16:48:32,707 INFO L885 garLoopResultBuilder]: At program point ULTIMATE.initEXIT(line -1) the Hoare annotation is: true [2022-04-06 16:48:32,707 INFO L885 garLoopResultBuilder]: At program point ULTIMATE.startEXIT(line -1) the Hoare annotation is: true [2022-04-06 16:48:32,707 INFO L885 garLoopResultBuilder]: At program point L-1(line -1) the Hoare annotation is: true [2022-04-06 16:48:32,707 INFO L885 garLoopResultBuilder]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2022-04-06 16:48:32,707 INFO L885 garLoopResultBuilder]: At program point ULTIMATE.startFINAL(line -1) the Hoare annotation is: true [2022-04-06 16:48:32,707 INFO L885 garLoopResultBuilder]: At program point __VERIFIER_assertENTRY(lines 10 16) the Hoare annotation is: true [2022-04-06 16:48:32,707 INFO L878 garLoopResultBuilder]: At program point L12(lines 12 13) the Hoare annotation is: (not (<= 1 |__VERIFIER_assert_#in~cond|)) [2022-04-06 16:48:32,707 INFO L878 garLoopResultBuilder]: At program point L11(lines 11 14) the Hoare annotation is: (or (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond) (not (<= 1 |__VERIFIER_assert_#in~cond|))) [2022-04-06 16:48:32,707 INFO L878 garLoopResultBuilder]: At program point __VERIFIER_assertEXIT(lines 10 16) the Hoare annotation is: (or (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond) (not (<= 1 |__VERIFIER_assert_#in~cond|))) [2022-04-06 16:48:32,707 INFO L878 garLoopResultBuilder]: At program point L11-2(lines 10 16) the Hoare annotation is: (or (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond) (not (<= 1 |__VERIFIER_assert_#in~cond|))) [2022-04-06 16:48:32,707 INFO L878 garLoopResultBuilder]: At program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 13) the Hoare annotation is: (not (<= 1 |__VERIFIER_assert_#in~cond|)) [2022-04-06 16:48:32,709 INFO L719 BasicCegarLoop]: Path program histogram: [18, 6, 6, 4, 2, 2, 2, 2, 2, 2, 2, 2] [2022-04-06 16:48:32,710 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-04-06 16:48:32,715 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_aux_div_main_~c~0_33_28,QUANTIFIED] [2022-04-06 16:48:32,715 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_aux_div_main_~c~0_33_28,QUANTIFIED] [2022-04-06 16:48:32,716 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_aux_div_main_~c~0_33_28,QUANTIFIED] [2022-04-06 16:48:32,716 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_aux_div_main_~c~0_33_28,QUANTIFIED] [2022-04-06 16:48:32,734 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_aux_div_main_~c~0_33_28,QUANTIFIED] [2022-04-06 16:48:32,734 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_aux_div_main_~c~0_33_28,QUANTIFIED] [2022-04-06 16:48:32,734 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_aux_div_main_~c~0_33_28,QUANTIFIED] [2022-04-06 16:48:32,734 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_aux_div_main_~c~0_33_28,QUANTIFIED] [2022-04-06 16:48:32,740 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.04 04:48:32 BoogieIcfgContainer [2022-04-06 16:48:32,740 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-04-06 16:48:32,741 INFO L158 Benchmark]: Toolchain (without parser) took 411848.58ms. Allocated memory was 160.4MB in the beginning and 402.7MB in the end (delta: 242.2MB). Free memory was 112.0MB in the beginning and 293.9MB in the end (delta: -181.9MB). Peak memory consumption was 221.6MB. Max. memory is 8.0GB. [2022-04-06 16:48:32,741 INFO L158 Benchmark]: CDTParser took 0.09ms. Allocated memory is still 160.4MB. Free memory is still 128.0MB. There was no memory consumed. Max. memory is 8.0GB. [2022-04-06 16:48:32,741 INFO L158 Benchmark]: CACSL2BoogieTranslator took 177.71ms. Allocated memory is still 160.4MB. Free memory was 111.7MB in the beginning and 136.3MB in the end (delta: -24.6MB). Peak memory consumption was 12.1MB. Max. memory is 8.0GB. [2022-04-06 16:48:32,741 INFO L158 Benchmark]: Boogie Preprocessor took 19.52ms. Allocated memory is still 160.4MB. Free memory was 136.3MB in the beginning and 134.9MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-04-06 16:48:32,742 INFO L158 Benchmark]: RCFGBuilder took 220.36ms. Allocated memory is still 160.4MB. Free memory was 134.9MB in the beginning and 123.4MB in the end (delta: 11.5MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. [2022-04-06 16:48:32,742 INFO L158 Benchmark]: TraceAbstraction took 411421.67ms. Allocated memory was 160.4MB in the beginning and 402.7MB in the end (delta: 242.2MB). Free memory was 123.1MB in the beginning and 293.9MB in the end (delta: -170.8MB). Peak memory consumption was 232.5MB. Max. memory is 8.0GB. [2022-04-06 16:48:32,743 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 160.4MB. Free memory is still 128.0MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 177.71ms. Allocated memory is still 160.4MB. Free memory was 111.7MB in the beginning and 136.3MB in the end (delta: -24.6MB). Peak memory consumption was 12.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 19.52ms. Allocated memory is still 160.4MB. Free memory was 136.3MB in the beginning and 134.9MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 220.36ms. Allocated memory is still 160.4MB. Free memory was 134.9MB in the beginning and 123.4MB in the end (delta: 11.5MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. * TraceAbstraction took 411421.67ms. Allocated memory was 160.4MB in the beginning and 402.7MB in the end (delta: 242.2MB). Free memory was 123.1MB in the beginning and 293.9MB in the end (delta: -170.8MB). Peak memory consumption was 232.5MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.boogie.preprocessor: - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_aux_div_main_~c~0_33_28,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_aux_div_main_~c~0_33_28,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_aux_div_main_~c~0_33_28,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_aux_div_main_~c~0_33_28,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_aux_div_main_~c~0_33_28,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_aux_div_main_~c~0_33_28,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_aux_div_main_~c~0_33_28,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_aux_div_main_~c~0_33_28,QUANTIFIED] * 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 - PositiveResult [Line: 13]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 43 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 411.3s, OverallIterations: 25, TraceHistogramMax: 29, PathProgramHistogramMax: 18, EmptinessCheckTime: 0.0s, AutomataDifference: 11.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 102.2s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1186 SdHoareTripleChecker+Valid, 5.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1064 mSDsluCounter, 6476 SdHoareTripleChecker+Invalid, 4.7s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 482 IncrementalHoareTripleChecker+Unchecked, 5110 mSDsCounter, 1152 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 8232 IncrementalHoareTripleChecker+Invalid, 9866 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 1152 mSolverCounterUnsat, 1366 mSDtfsCounter, 8232 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 4494 GetRequests, 3914 SyntacticMatches, 25 SemanticMatches, 555 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 2891 ImplicationChecksByTransitivity, 26.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=317occurred in iteration=16, InterpolantAutomatonStates: 306, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.7s AutomataMinimizationTime, 25 MinimizatonAttempts, 333 StatesRemovedByMinimization, 18 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 40 LocationsWithAnnotation, 2380 PreInvPairs, 2797 NumberOfFragments, 4160 HoareAnnotationTreeSize, 2380 FomulaSimplifications, 4194 FormulaSimplificationTreeSizeReduction, 28.5s HoareSimplificationTime, 40 FomulaSimplificationsInter, 1609633 FormulaSimplificationTreeSizeReductionInter, 73.6s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: No data available, 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 - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 49]: Loop Invariant [2022-04-06 16:48:32,746 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_aux_div_main_~c~0_33_28,QUANTIFIED] [2022-04-06 16:48:32,746 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_aux_div_main_~c~0_33_28,QUANTIFIED] [2022-04-06 16:48:32,746 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_aux_div_main_~c~0_33_28,QUANTIFIED] [2022-04-06 16:48:32,746 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_aux_div_main_~c~0_33_28,QUANTIFIED] [2022-04-06 16:48:32,748 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_aux_div_main_~c~0_33_28,QUANTIFIED] [2022-04-06 16:48:32,748 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_aux_div_main_~c~0_33_28,QUANTIFIED] [2022-04-06 16:48:32,748 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_aux_div_main_~c~0_33_28,QUANTIFIED] [2022-04-06 16:48:32,748 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_aux_div_main_~c~0_33_28,QUANTIFIED] Derived loop invariant: (((((((((((((((((((v == d * b && 1 <= c) && s == 0) && y <= 2) && p == 0) && k == 0) && r == 1) && a == y) && b == x) && c <= 2) && d == 1) && x < a) && x <= a) && 1 <= b) && q == 1) && v < c) || ((((((((((((((((v == d * b && 1 <= c) && s == 0) && y <= 2) && p == 0) && k == 0) && r == 1) && -1 * v / -2 <= b) && a == y) && b < c) && b == x) && c <= 2) && x < a) && b <= v / 2) && x <= a) && 1 <= b) && q == 1)) || ((((((((((((((b == v && y + p * x == a) && a == c + b * k) && 1 <= x) && p == 0) && (\exists aux_div_aux_div_main_~c~0_33_28 : int :: ((2 * aux_div_aux_div_main_~c~0_33_28 <= (2 + -1 * b) / 2 && (-2 + c) / -2 < 2 + 2 * aux_div_aux_div_main_~c~0_33_28) && b < aux_div_aux_div_main_~c~0_33_28) && (-2 + 5 * aux_div_aux_div_main_~c~0_33_28) / -2 < 2)) && b == x + a * s) && r == 1) && b < c) && c <= 2) && q == p * s + 1) && d == 1) && a <= 2) && 1 <= y) && x <= 2)) || ((((((((((((((v == d * b && y + p * x == a) && a == c + b * k) && 1 <= x) && p == 0) && b == x + a * s) && r == 1) && -1 * v / -2 <= b) && b < c) && c <= 2) && q == p * s + 1) && a <= 2) && 1 <= y) && !(0 <= x + 2 * (a * s))) && x <= 2)) || (((((((((((((v == d * b && r == 0) && y <= 2) && k == 0) && s == 1) && 1 <= a) && b == y) && d == 1) && q == 0) && 1 <= y) && a == x) && c == x) && x <= 2) && p == 1)) || ((((((((((((((r == 0 && b * 2 <= c) && k == 0) && s == 1) && -1 * v / -2 <= b) && 1 <= a) && b == y) && d == 2) && b <= v / 2) && q == 0) && 1 <= y) && a == x) && c == x) && x <= 2) && p == 1) - InvariantResult [Line: 35]: Loop Invariant Derived loop invariant: (((((((((((((1 <= c && s == 0) && p == 0) && r == 1) && a == y) && b == x) && c <= 2) && x < a) && a <= 2) && 1 <= b) && q == 1) || ((((((((y * 2 <= x && p == 0) && x == b + y * 2) && r == 1) && a == y) && p * 2 + q == 1) && x < y * 3) && x <= 2) && s + r * 2 == 0)) || (((((((((r == 0 && y <= 2) && s == 1) && 1 <= a) && b == y) && q == 0) && 1 <= y) && a == x) && x <= 2) && p == 1)) || ((((((((r == 0 && x * 2 + b == y) && y <= 2) && s == 1) && x < y) && x == p * x) && q + p * (x * 2 / x) == 0) && a == x) && y < x * 3)) || ((((((((((y + p * x == a && 1 <= x) && y <= 2) && p == 0) && b == x + a * s) && r == 1) && c <= 2) && q == p * s + 1) && 1 <= y) && !(0 <= x + 2 * (a * s))) && x <= 2) - InvariantResult [Line: 42]: Loop Invariant Derived loop invariant: (((((((((((((((((((b <= (-1 * c + 2) / 2 / 2 && v == d * b) && r == 0) && x == c + b * k) && y <= 2) && !(b * k <= c)) && s == 1) && -1 * v / -2 <= b) && 1 <= a) && b == y) && q == 0) && 1 <= y) && a == x) && x <= 2) && p == 1) || ((((((((((((v == d * b && s == 0) && p == 0) && c + b * 2 == y) && x < y) && r == 1) && -1 * v / -2 <= b) && a == y) && b == x) && a <= 2) && b * k == b * 2) && 1 <= b) && q == 1)) || ((((((((((((((v == d * b && r == 0) && v <= b) && x == c + b * k) && y <= 2) && !(b * k <= c)) && s == 1) && -1 * v / -2 <= b) && 1 <= a) && b == y) && q == 0) && 1 <= y) && a == x) && x <= 2) && p == 1)) || ((((((((((((y + p * x == a && a == c + b * k) && 1 <= x) && p == 0) && b == x + a * s) && r == 1) && b < c) && c <= 2) && q == p * s + 1) && a <= 2) && 1 <= y) && !(0 <= x + 2 * (a * s))) && x <= 2)) || (((((((((((r == 0 && y <= 2) && k == 0) && s == 1) && 1 <= a) && b == y) && q == 0) && 1 <= y) && a == x) && c == x) && x <= 2) && p == 1)) || (((((((((((s == 0 && p == 0) && k == 0) && r == 1) && a == y) && b < c) && b == x) && c <= 2) && x < a) && a <= 2) && 1 <= b) && q == 1)) || ((((((((((((((v == d * b && r == 0) && x == c + b * k) && y <= 2) && !(b * k <= c)) && s == 1) && b <= 1) && -1 * v / -2 <= b) && 1 <= a) && b == y) && q == 0) && 1 <= y) && a == x) && x <= 2) && p == 1) - ProcedureContractResult [Line: 7]: Procedure Contract for assume_abort_if_not Derived contract for procedure assume_abort_if_not: !(\old(cond) == 0) && cond == \old(cond) - ProcedureContractResult [Line: 18]: Procedure Contract for main Derived contract for procedure main: 1 - ProcedureContractResult [Line: 10]: Procedure Contract for __VERIFIER_assert Derived contract for procedure __VERIFIER_assert: \old(cond) == cond || !(1 <= \old(cond)) RESULT: Ultimate proved your program to be correct! [2022-04-06 16:48:32,954 WARN L435 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forcibly destroying the process [2022-04-06 16:48:32,972 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 137 Received shutdown request...