/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/acceleratedInterpolationQvasr_64.epf -i ../../../trunk/examples/svcomp/nla-digbench-scaling/egcd2-ll_valuebound20.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-7968f31 [2022-03-18 02:40:59,777 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-03-18 02:40:59,779 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-03-18 02:40:59,821 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-03-18 02:40:59,835 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-03-18 02:40:59,837 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-03-18 02:40:59,838 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-03-18 02:40:59,839 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-03-18 02:40:59,840 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-03-18 02:40:59,840 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-03-18 02:40:59,844 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-03-18 02:40:59,849 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-03-18 02:40:59,850 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-03-18 02:40:59,851 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-03-18 02:40:59,852 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-03-18 02:40:59,853 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-03-18 02:40:59,854 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-03-18 02:40:59,860 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-03-18 02:40:59,867 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-03-18 02:40:59,867 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-03-18 02:40:59,868 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-03-18 02:40:59,869 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationQvasr_64.epf [2022-03-18 02:40:59,879 INFO L113 SettingsManager]: Loading preferences was successful [2022-03-18 02:40:59,880 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-03-18 02:40:59,882 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-03-18 02:40:59,882 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-03-18 02:40:59,882 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-03-18 02:40:59,882 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-03-18 02:40:59,882 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-03-18 02:40:59,882 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-03-18 02:40:59,882 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-03-18 02:40:59,883 INFO L138 SettingsManager]: * Use constant arrays=true [2022-03-18 02:40:59,883 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-03-18 02:40:59,883 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-03-18 02:40:59,884 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-03-18 02:40:59,884 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-03-18 02:40:59,884 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-03-18 02:40:59,884 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-03-18 02:40:59,884 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-03-18 02:40:59,884 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_NestedInterpolation [2022-03-18 02:40:59,884 INFO L138 SettingsManager]: * Trace refinement strategy=ACCELERATED_INTERPOLATION [2022-03-18 02:40:59,884 INFO L138 SettingsManager]: * Trace refinement strategy used in Accelerated Interpolation=CAMEL [2022-03-18 02:40:59,885 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-03-18 02:40:59,885 INFO L138 SettingsManager]: * Loop acceleration method that is used by accelerated interpolation=QVASR [2022-03-18 02:40:59,885 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-03-18 02:41:00,111 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-03-18 02:41:00,135 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-03-18 02:41:00,137 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-03-18 02:41:00,138 INFO L271 PluginConnector]: Initializing CDTParser... [2022-03-18 02:41:00,139 INFO L275 PluginConnector]: CDTParser initialized [2022-03-18 02:41:00,140 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/nla-digbench-scaling/egcd2-ll_valuebound20.c [2022-03-18 02:41:00,199 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b9bf65f55/e7882ddf3375439a8fb4f1ae9e7d26b5/FLAGbce57b3c8 [2022-03-18 02:41:00,554 INFO L306 CDTParser]: Found 1 translation units. [2022-03-18 02:41:00,557 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench-scaling/egcd2-ll_valuebound20.c [2022-03-18 02:41:00,563 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b9bf65f55/e7882ddf3375439a8fb4f1ae9e7d26b5/FLAGbce57b3c8 [2022-03-18 02:41:00,576 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b9bf65f55/e7882ddf3375439a8fb4f1ae9e7d26b5 [2022-03-18 02:41:00,580 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-03-18 02:41:00,581 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2022-03-18 02:41:00,585 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-03-18 02:41:00,585 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-03-18 02:41:00,588 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-03-18 02:41:00,589 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.03 02:41:00" (1/1) ... [2022-03-18 02:41:00,590 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4b08a563 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.03 02:41:00, skipping insertion in model container [2022-03-18 02:41:00,590 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.03 02:41:00" (1/1) ... [2022-03-18 02:41:00,596 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-03-18 02:41:00,609 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-03-18 02:41:00,790 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/egcd2-ll_valuebound20.c[490,503] [2022-03-18 02:41:00,825 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-03-18 02:41:00,832 INFO L203 MainTranslator]: Completed pre-run [2022-03-18 02:41:00,843 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/egcd2-ll_valuebound20.c[490,503] [2022-03-18 02:41:00,854 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-03-18 02:41:00,865 INFO L208 MainTranslator]: Completed translation [2022-03-18 02:41:00,865 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.03 02:41:00 WrapperNode [2022-03-18 02:41:00,865 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-03-18 02:41:00,866 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-03-18 02:41:00,866 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-03-18 02:41:00,867 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-03-18 02:41:00,876 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.03 02:41:00" (1/1) ... [2022-03-18 02:41:00,877 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.03 02:41:00" (1/1) ... [2022-03-18 02:41:00,888 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.03 02:41:00" (1/1) ... [2022-03-18 02:41:00,889 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.03 02:41:00" (1/1) ... [2022-03-18 02:41:00,899 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.03 02:41:00" (1/1) ... [2022-03-18 02:41:00,902 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.03 02:41:00" (1/1) ... [2022-03-18 02:41:00,903 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.03 02:41:00" (1/1) ... [2022-03-18 02:41:00,905 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-03-18 02:41:00,909 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-03-18 02:41:00,909 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-03-18 02:41:00,909 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-03-18 02:41:00,910 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.03 02:41:00" (1/1) ... [2022-03-18 02:41:00,916 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-03-18 02:41:00,924 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-18 02:41:00,934 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-03-18 02:41:00,951 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-03-18 02:41:00,976 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2022-03-18 02:41:00,976 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-03-18 02:41:00,976 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2022-03-18 02:41:00,976 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-03-18 02:41:00,977 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-03-18 02:41:00,977 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2022-03-18 02:41:00,977 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2022-03-18 02:41:00,977 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2022-03-18 02:41:00,977 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2022-03-18 02:41:00,977 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-03-18 02:41:00,977 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2022-03-18 02:41:00,977 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-03-18 02:41:00,978 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-03-18 02:41:00,978 INFO L130 BoogieDeclarations]: Found specification of procedure main [2022-03-18 02:41:00,979 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2022-03-18 02:41:00,981 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-03-18 02:41:00,981 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-03-18 02:41:00,981 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-03-18 02:41:00,981 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-03-18 02:41:00,982 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-03-18 02:41:01,040 INFO L234 CfgBuilder]: Building ICFG [2022-03-18 02:41:01,041 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-03-18 02:41:01,220 INFO L275 CfgBuilder]: Performing block encoding [2022-03-18 02:41:01,235 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-03-18 02:41:01,236 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2022-03-18 02:41:01,237 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.03 02:41:01 BoogieIcfgContainer [2022-03-18 02:41:01,237 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-03-18 02:41:01,239 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-03-18 02:41:01,239 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-03-18 02:41:01,256 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-03-18 02:41:01,256 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.03 02:41:00" (1/3) ... [2022-03-18 02:41:01,256 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@bc284d7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.03 02:41:01, skipping insertion in model container [2022-03-18 02:41:01,257 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.03 02:41:00" (2/3) ... [2022-03-18 02:41:01,257 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@bc284d7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.03 02:41:01, skipping insertion in model container [2022-03-18 02:41:01,257 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.03 02:41:01" (3/3) ... [2022-03-18 02:41:01,258 INFO L111 eAbstractionObserver]: Analyzing ICFG egcd2-ll_valuebound20.c [2022-03-18 02:41:01,262 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2022-03-18 02:41:01,262 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-03-18 02:41:01,306 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-03-18 02:41:01,313 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 [2022-03-18 02:41:01,314 INFO L341 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-03-18 02:41:01,331 INFO L276 IsEmpty]: Start isEmpty. Operand has 40 states, 20 states have (on average 1.45) internal successors, (29), 22 states have internal predecessors, (29), 14 states have call successors, (14), 4 states have call predecessors, (14), 4 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) [2022-03-18 02:41:01,339 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2022-03-18 02:41:01,339 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 02:41:01,340 INFO L500 BasicCegarLoop]: trace histogram [6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 02:41:01,341 INFO L403 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 02:41:01,345 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 02:41:01,345 INFO L85 PathProgramCache]: Analyzing trace with hash -587582002, now seen corresponding path program 1 times [2022-03-18 02:41:01,352 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-18 02:41:01,352 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [2069065320] [2022-03-18 02:41:01,361 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-18 02:41:01,361 INFO L85 PathProgramCache]: Analyzing trace with hash -587582002, now seen corresponding path program 2 times [2022-03-18 02:41:01,363 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 02:41:01,363 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [172381952] [2022-03-18 02:41:01,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 02:41:01,365 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 02:41:01,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 02:41:01,531 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 02:41:01,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 02:41:01,546 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-18 02:41:01,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 02:41:01,552 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-18 02:41:01,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 02:41:01,560 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-03-18 02:41:01,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 02:41:01,569 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-03-18 02:41:01,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 02:41:01,579 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-03-18 02:41:01,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 02:41:01,584 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-03-18 02:41:01,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 02:41:01,590 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2022-03-18 02:41:01,591 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 02:41:01,591 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [172381952] [2022-03-18 02:41:01,592 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [172381952] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 02:41:01,592 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 02:41:01,592 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-03-18 02:41:01,594 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-18 02:41:01,595 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [2069065320] [2022-03-18 02:41:01,595 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [2069065320] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 02:41:01,595 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 02:41:01,595 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-03-18 02:41:01,595 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1877028126] [2022-03-18 02:41:01,596 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-18 02:41:01,599 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-03-18 02:41:01,599 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-18 02:41:01,618 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-03-18 02:41:01,619 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-03-18 02:41:01,620 INFO L87 Difference]: Start difference. First operand has 40 states, 20 states have (on average 1.45) internal successors, (29), 22 states have internal predecessors, (29), 14 states have call successors, (14), 4 states have call predecessors, (14), 4 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) 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, (9), 3 states have call predecessors, (9), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-03-18 02:41:01,729 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 02:41:01,729 INFO L93 Difference]: Finished difference Result 73 states and 118 transitions. [2022-03-18 02:41:01,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-03-18 02:41:01,731 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, (9), 3 states have call predecessors, (9), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 43 [2022-03-18 02:41:01,732 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 02:41:01,737 INFO L225 Difference]: With dead ends: 73 [2022-03-18 02:41:01,737 INFO L226 Difference]: Without dead ends: 35 [2022-03-18 02:41:01,740 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-03-18 02:41:01,742 INFO L912 BasicCegarLoop]: 39 mSDtfsCounter, 20 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 42 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-18 02:41:01,744 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [32 Valid, 42 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-18 02:41:01,759 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2022-03-18 02:41:01,788 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2022-03-18 02:41:01,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 17 states have (on average 1.1764705882352942) internal successors, (20), 19 states have internal predecessors, (20), 14 states have call successors, (14), 4 states have call predecessors, (14), 3 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2022-03-18 02:41:01,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 46 transitions. [2022-03-18 02:41:01,796 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 46 transitions. Word has length 43 [2022-03-18 02:41:01,796 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 02:41:01,797 INFO L478 AbstractCegarLoop]: Abstraction has 35 states and 46 transitions. [2022-03-18 02:41:01,797 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, (9), 3 states have call predecessors, (9), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-03-18 02:41:01,797 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 46 transitions. [2022-03-18 02:41:01,798 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2022-03-18 02:41:01,798 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 02:41:01,798 INFO L500 BasicCegarLoop]: trace histogram [6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 02:41:01,799 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-03-18 02:41:01,799 INFO L403 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 02:41:01,799 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 02:41:01,799 INFO L85 PathProgramCache]: Analyzing trace with hash 987777007, now seen corresponding path program 1 times [2022-03-18 02:41:01,800 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-18 02:41:01,800 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [708719376] [2022-03-18 02:41:01,801 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-18 02:41:01,802 INFO L85 PathProgramCache]: Analyzing trace with hash 987777007, now seen corresponding path program 2 times [2022-03-18 02:41:01,802 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 02:41:01,802 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1710785762] [2022-03-18 02:41:01,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 02:41:01,802 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 02:41:01,820 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-03-18 02:41:01,820 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1159053388] [2022-03-18 02:41:01,820 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-18 02:41:01,820 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-18 02:41:01,821 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-18 02:41:01,822 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-18 02:41:01,825 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-03-18 02:41:01,877 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-18 02:41:01,877 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-18 02:41:01,879 INFO L263 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 7 conjunts are in the unsatisfiable core [2022-03-18 02:41:01,883 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-18 02:41:02,050 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 9 proven. 6 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2022-03-18 02:41:02,050 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-18 02:41:02,211 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 9 proven. 6 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2022-03-18 02:41:02,212 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 02:41:02,212 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1710785762] [2022-03-18 02:41:02,213 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-03-18 02:41:02,213 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1159053388] [2022-03-18 02:41:02,217 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1159053388] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-18 02:41:02,218 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-03-18 02:41:02,223 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 7 [2022-03-18 02:41:02,224 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-18 02:41:02,224 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [708719376] [2022-03-18 02:41:02,224 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [708719376] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 02:41:02,224 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 02:41:02,225 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-03-18 02:41:02,225 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1103304580] [2022-03-18 02:41:02,225 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-18 02:41:02,225 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-03-18 02:41:02,226 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-18 02:41:02,226 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-03-18 02:41:02,226 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-03-18 02:41:02,226 INFO L87 Difference]: Start difference. First operand 35 states and 46 transitions. Second operand has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 5 states have internal predecessors, (16), 3 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2022-03-18 02:41:02,303 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 02:41:02,304 INFO L93 Difference]: Finished difference Result 52 states and 69 transitions. [2022-03-18 02:41:02,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-03-18 02:41:02,304 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 5 states have internal predecessors, (16), 3 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) Word has length 44 [2022-03-18 02:41:02,305 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 02:41:02,306 INFO L225 Difference]: With dead ends: 52 [2022-03-18 02:41:02,306 INFO L226 Difference]: Without dead ends: 44 [2022-03-18 02:41:02,306 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 81 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2022-03-18 02:41:02,307 INFO L912 BasicCegarLoop]: 38 mSDtfsCounter, 19 mSDsluCounter, 116 mSDsCounter, 0 mSdLazyCounter, 64 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 154 SdHoareTripleChecker+Invalid, 75 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 64 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-18 02:41:02,308 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [24 Valid, 154 Invalid, 75 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 64 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-18 02:41:02,309 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2022-03-18 02:41:02,317 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 37. [2022-03-18 02:41:02,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 19 states have (on average 1.1578947368421053) internal successors, (22), 20 states have internal predecessors, (22), 14 states have call successors, (14), 4 states have call predecessors, (14), 3 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2022-03-18 02:41:02,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 48 transitions. [2022-03-18 02:41:02,319 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 48 transitions. Word has length 44 [2022-03-18 02:41:02,319 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 02:41:02,319 INFO L478 AbstractCegarLoop]: Abstraction has 37 states and 48 transitions. [2022-03-18 02:41:02,320 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 5 states have internal predecessors, (16), 3 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2022-03-18 02:41:02,320 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 48 transitions. [2022-03-18 02:41:02,321 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2022-03-18 02:41:02,321 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 02:41:02,321 INFO L500 BasicCegarLoop]: trace histogram [6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 02:41:02,350 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-03-18 02:41:02,543 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 [2022-03-18 02:41:02,544 INFO L403 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 02:41:02,544 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 02:41:02,544 INFO L85 PathProgramCache]: Analyzing trace with hash 561616070, now seen corresponding path program 1 times [2022-03-18 02:41:02,544 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-18 02:41:02,544 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [2045289507] [2022-03-18 02:41:02,545 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-18 02:41:02,545 INFO L85 PathProgramCache]: Analyzing trace with hash 561616070, now seen corresponding path program 2 times [2022-03-18 02:41:02,545 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 02:41:02,545 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1045496531] [2022-03-18 02:41:02,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 02:41:02,546 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 02:41:02,567 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-03-18 02:41:02,567 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1131173166] [2022-03-18 02:41:02,567 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-18 02:41:02,567 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-18 02:41:02,568 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-18 02:41:02,578 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-18 02:41:02,580 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-03-18 02:41:02,616 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-03-18 02:41:02,616 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-18 02:41:02,617 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 8 conjunts are in the unsatisfiable core [2022-03-18 02:41:02,619 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-18 02:41:02,719 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2022-03-18 02:41:02,719 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-03-18 02:41:02,719 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 02:41:02,719 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1045496531] [2022-03-18 02:41:02,719 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-03-18 02:41:02,720 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1131173166] [2022-03-18 02:41:02,720 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1131173166] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 02:41:02,720 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 02:41:02,720 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-03-18 02:41:02,720 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-18 02:41:02,720 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [2045289507] [2022-03-18 02:41:02,721 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [2045289507] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 02:41:02,721 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 02:41:02,721 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-03-18 02:41:02,721 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1909041546] [2022-03-18 02:41:02,721 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-18 02:41:02,721 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-03-18 02:41:02,722 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-18 02:41:02,722 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-03-18 02:41:02,722 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-03-18 02:41:02,722 INFO L87 Difference]: Start difference. First operand 37 states and 48 transitions. Second operand has 5 states, 5 states have (on average 2.8) internal successors, (14), 4 states have internal predecessors, (14), 2 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2022-03-18 02:41:02,762 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 02:41:02,762 INFO L93 Difference]: Finished difference Result 50 states and 65 transitions. [2022-03-18 02:41:02,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-03-18 02:41:02,763 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 4 states have internal predecessors, (14), 2 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) Word has length 45 [2022-03-18 02:41:02,763 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 02:41:02,764 INFO L225 Difference]: With dead ends: 50 [2022-03-18 02:41:02,764 INFO L226 Difference]: Without dead ends: 48 [2022-03-18 02:41:02,764 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-03-18 02:41:02,765 INFO L912 BasicCegarLoop]: 44 mSDtfsCounter, 6 mSDsluCounter, 119 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 163 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-18 02:41:02,766 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [10 Valid, 163 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-18 02:41:02,767 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2022-03-18 02:41:02,775 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 43. [2022-03-18 02:41:02,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43 states, 23 states have (on average 1.1304347826086956) internal successors, (26), 25 states have internal predecessors, (26), 15 states have call successors, (15), 5 states have call predecessors, (15), 4 states have return successors, (13), 12 states have call predecessors, (13), 13 states have call successors, (13) [2022-03-18 02:41:02,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 54 transitions. [2022-03-18 02:41:02,776 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 54 transitions. Word has length 45 [2022-03-18 02:41:02,776 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 02:41:02,776 INFO L478 AbstractCegarLoop]: Abstraction has 43 states and 54 transitions. [2022-03-18 02:41:02,777 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 4 states have internal predecessors, (14), 2 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2022-03-18 02:41:02,777 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 54 transitions. [2022-03-18 02:41:02,778 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2022-03-18 02:41:02,778 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 02:41:02,778 INFO L500 BasicCegarLoop]: trace histogram [6, 6, 6, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 02:41:02,803 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-03-18 02:41:02,999 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 [2022-03-18 02:41:03,000 INFO L403 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 02:41:03,000 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 02:41:03,000 INFO L85 PathProgramCache]: Analyzing trace with hash -680064098, now seen corresponding path program 1 times [2022-03-18 02:41:03,001 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-18 02:41:03,001 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1285436186] [2022-03-18 02:41:03,001 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-18 02:41:03,001 INFO L85 PathProgramCache]: Analyzing trace with hash -680064098, now seen corresponding path program 2 times [2022-03-18 02:41:03,002 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 02:41:03,002 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1965824054] [2022-03-18 02:41:03,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 02:41:03,002 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 02:41:03,020 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-03-18 02:41:03,020 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1487612871] [2022-03-18 02:41:03,020 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-18 02:41:03,021 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-18 02:41:03,021 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-18 02:41:03,027 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-18 02:41:03,052 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-03-18 02:41:03,076 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-18 02:41:03,077 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-18 02:41:03,077 INFO L263 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 9 conjunts are in the unsatisfiable core [2022-03-18 02:41:03,080 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-18 02:41:03,230 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2022-03-18 02:41:03,230 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-03-18 02:41:03,230 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 02:41:03,231 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1965824054] [2022-03-18 02:41:03,231 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-03-18 02:41:03,231 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1487612871] [2022-03-18 02:41:03,231 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1487612871] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 02:41:03,231 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 02:41:03,231 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-03-18 02:41:03,232 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-18 02:41:03,232 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1285436186] [2022-03-18 02:41:03,232 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1285436186] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 02:41:03,232 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 02:41:03,232 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-03-18 02:41:03,232 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [323345999] [2022-03-18 02:41:03,232 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-18 02:41:03,233 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-03-18 02:41:03,233 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-18 02:41:03,233 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-03-18 02:41:03,233 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-03-18 02:41:03,233 INFO L87 Difference]: Start difference. First operand 43 states and 54 transitions. Second operand has 5 states, 5 states have (on average 3.4) internal successors, (17), 4 states have internal predecessors, (17), 2 states have call successors, (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) [2022-03-18 02:41:03,267 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 02:41:03,267 INFO L93 Difference]: Finished difference Result 58 states and 74 transitions. [2022-03-18 02:41:03,267 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-03-18 02:41:03,267 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.4) internal successors, (17), 4 states have internal predecessors, (17), 2 states have call successors, (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 50 [2022-03-18 02:41:03,268 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 02:41:03,270 INFO L225 Difference]: With dead ends: 58 [2022-03-18 02:41:03,270 INFO L226 Difference]: Without dead ends: 56 [2022-03-18 02:41:03,270 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-03-18 02:41:03,271 INFO L912 BasicCegarLoop]: 48 mSDtfsCounter, 7 mSDsluCounter, 125 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 173 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-18 02:41:03,271 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [10 Valid, 173 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-18 02:41:03,272 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2022-03-18 02:41:03,282 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 55. [2022-03-18 02:41:03,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55 states, 29 states have (on average 1.1379310344827587) internal successors, (33), 32 states have internal predecessors, (33), 20 states have call successors, (20), 6 states have call predecessors, (20), 5 states have return successors, (18), 16 states have call predecessors, (18), 18 states have call successors, (18) [2022-03-18 02:41:03,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 71 transitions. [2022-03-18 02:41:03,284 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 71 transitions. Word has length 50 [2022-03-18 02:41:03,284 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 02:41:03,284 INFO L478 AbstractCegarLoop]: Abstraction has 55 states and 71 transitions. [2022-03-18 02:41:03,285 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.4) internal successors, (17), 4 states have internal predecessors, (17), 2 states have call successors, (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) [2022-03-18 02:41:03,285 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 71 transitions. [2022-03-18 02:41:03,286 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2022-03-18 02:41:03,286 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 02:41:03,286 INFO L500 BasicCegarLoop]: trace histogram [6, 6, 6, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 02:41:03,311 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-03-18 02:41:03,499 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 [2022-03-18 02:41:03,499 INFO L403 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 02:41:03,500 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 02:41:03,500 INFO L85 PathProgramCache]: Analyzing trace with hash 606548870, now seen corresponding path program 1 times [2022-03-18 02:41:03,500 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-18 02:41:03,500 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [264672987] [2022-03-18 02:41:03,501 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-18 02:41:03,501 INFO L85 PathProgramCache]: Analyzing trace with hash 606548870, now seen corresponding path program 2 times [2022-03-18 02:41:03,501 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 02:41:03,501 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [332854175] [2022-03-18 02:41:03,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 02:41:03,502 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 02:41:03,513 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-03-18 02:41:03,513 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1782180855] [2022-03-18 02:41:03,514 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-18 02:41:03,514 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-18 02:41:03,514 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-18 02:41:03,515 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-18 02:41:03,523 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-03-18 02:41:03,565 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-18 02:41:03,565 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-18 02:41:03,566 INFO L263 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 9 conjunts are in the unsatisfiable core [2022-03-18 02:41:03,568 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-18 02:41:03,705 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2022-03-18 02:41:03,705 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-03-18 02:41:03,705 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 02:41:03,705 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [332854175] [2022-03-18 02:41:03,705 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-03-18 02:41:03,706 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1782180855] [2022-03-18 02:41:03,706 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1782180855] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 02:41:03,706 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 02:41:03,706 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-03-18 02:41:03,706 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-18 02:41:03,706 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [264672987] [2022-03-18 02:41:03,706 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [264672987] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 02:41:03,706 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 02:41:03,706 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-03-18 02:41:03,707 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [879274066] [2022-03-18 02:41:03,707 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-18 02:41:03,707 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-03-18 02:41:03,707 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-18 02:41:03,707 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-03-18 02:41:03,708 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-03-18 02:41:03,708 INFO L87 Difference]: Start difference. First operand 55 states and 71 transitions. Second operand has 5 states, 5 states have (on average 3.4) internal successors, (17), 4 states have internal predecessors, (17), 2 states have call successors, (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) [2022-03-18 02:41:03,746 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 02:41:03,746 INFO L93 Difference]: Finished difference Result 62 states and 77 transitions. [2022-03-18 02:41:03,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-03-18 02:41:03,747 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.4) internal successors, (17), 4 states have internal predecessors, (17), 2 states have call successors, (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 55 [2022-03-18 02:41:03,747 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 02:41:03,748 INFO L225 Difference]: With dead ends: 62 [2022-03-18 02:41:03,748 INFO L226 Difference]: Without dead ends: 60 [2022-03-18 02:41:03,748 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-03-18 02:41:03,749 INFO L912 BasicCegarLoop]: 46 mSDtfsCounter, 7 mSDsluCounter, 117 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 163 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-18 02:41:03,749 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [9 Valid, 163 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-18 02:41:03,750 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2022-03-18 02:41:03,759 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 59. [2022-03-18 02:41:03,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59 states, 32 states have (on average 1.125) internal successors, (36), 35 states have internal predecessors, (36), 20 states have call successors, (20), 7 states have call predecessors, (20), 6 states have return successors, (18), 16 states have call predecessors, (18), 18 states have call successors, (18) [2022-03-18 02:41:03,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 74 transitions. [2022-03-18 02:41:03,760 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 74 transitions. Word has length 55 [2022-03-18 02:41:03,760 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 02:41:03,760 INFO L478 AbstractCegarLoop]: Abstraction has 59 states and 74 transitions. [2022-03-18 02:41:03,760 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.4) internal successors, (17), 4 states have internal predecessors, (17), 2 states have call successors, (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) [2022-03-18 02:41:03,761 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 74 transitions. [2022-03-18 02:41:03,761 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2022-03-18 02:41:03,761 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 02:41:03,761 INFO L500 BasicCegarLoop]: trace histogram [6, 6, 6, 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, 1, 1] [2022-03-18 02:41:03,789 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-03-18 02:41:03,978 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 [2022-03-18 02:41:03,978 INFO L403 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 02:41:03,979 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 02:41:03,979 INFO L85 PathProgramCache]: Analyzing trace with hash 1584976990, now seen corresponding path program 1 times [2022-03-18 02:41:03,979 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-18 02:41:03,979 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [144566675] [2022-03-18 02:41:03,979 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-18 02:41:03,979 INFO L85 PathProgramCache]: Analyzing trace with hash 1584976990, now seen corresponding path program 2 times [2022-03-18 02:41:03,979 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 02:41:03,980 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1473072925] [2022-03-18 02:41:03,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 02:41:03,980 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 02:41:03,990 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-03-18 02:41:03,991 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2092666325] [2022-03-18 02:41:03,991 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-18 02:41:03,991 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-18 02:41:03,991 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-18 02:41:03,992 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-18 02:41:03,994 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-03-18 02:41:04,045 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-18 02:41:04,045 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-18 02:41:04,046 INFO L263 TraceCheckSpWp]: Trace formula consists of 164 conjuncts, 23 conjunts are in the unsatisfiable core [2022-03-18 02:41:04,049 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-18 02:41:04,269 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 10 proven. 2 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2022-03-18 02:41:04,269 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-18 02:41:04,386 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 02:41:04,387 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1473072925] [2022-03-18 02:41:04,387 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-03-18 02:41:04,387 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2092666325] [2022-03-18 02:41:04,387 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2092666325] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-18 02:41:04,387 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-03-18 02:41:04,387 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2022-03-18 02:41:04,387 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-18 02:41:04,387 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [144566675] [2022-03-18 02:41:04,388 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [144566675] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 02:41:04,388 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 02:41:04,388 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-03-18 02:41:04,388 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2012785712] [2022-03-18 02:41:04,388 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-18 02:41:04,389 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-03-18 02:41:04,389 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-18 02:41:04,390 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-03-18 02:41:04,390 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2022-03-18 02:41:04,390 INFO L87 Difference]: Start difference. First operand 59 states and 74 transitions. Second operand has 7 states, 7 states have (on average 2.857142857142857) internal successors, (20), 6 states have internal predecessors, (20), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-03-18 02:41:04,516 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 02:41:04,517 INFO L93 Difference]: Finished difference Result 66 states and 80 transitions. [2022-03-18 02:41:04,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-03-18 02:41:04,517 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.857142857142857) internal successors, (20), 6 states have internal predecessors, (20), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 60 [2022-03-18 02:41:04,520 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 02:41:04,521 INFO L225 Difference]: With dead ends: 66 [2022-03-18 02:41:04,521 INFO L226 Difference]: Without dead ends: 64 [2022-03-18 02:41:04,521 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 56 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2022-03-18 02:41:04,522 INFO L912 BasicCegarLoop]: 36 mSDtfsCounter, 11 mSDsluCounter, 145 mSDsCounter, 0 mSdLazyCounter, 111 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 181 SdHoareTripleChecker+Invalid, 113 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 111 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-18 02:41:04,522 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [12 Valid, 181 Invalid, 113 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 111 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-18 02:41:04,523 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2022-03-18 02:41:04,533 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 63. [2022-03-18 02:41:04,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63 states, 35 states have (on average 1.1142857142857143) internal successors, (39), 38 states have internal predecessors, (39), 20 states have call successors, (20), 8 states have call predecessors, (20), 7 states have return successors, (18), 16 states have call predecessors, (18), 18 states have call successors, (18) [2022-03-18 02:41:04,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 77 transitions. [2022-03-18 02:41:04,537 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 77 transitions. Word has length 60 [2022-03-18 02:41:04,538 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 02:41:04,538 INFO L478 AbstractCegarLoop]: Abstraction has 63 states and 77 transitions. [2022-03-18 02:41:04,538 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.857142857142857) internal successors, (20), 6 states have internal predecessors, (20), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-03-18 02:41:04,538 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 77 transitions. [2022-03-18 02:41:04,540 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-03-18 02:41:04,541 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 02:41:04,541 INFO L500 BasicCegarLoop]: trace histogram [6, 6, 6, 5, 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] [2022-03-18 02:41:04,567 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2022-03-18 02:41:04,755 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 [2022-03-18 02:41:04,755 INFO L403 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 02:41:04,756 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 02:41:04,756 INFO L85 PathProgramCache]: Analyzing trace with hash -669670075, now seen corresponding path program 1 times [2022-03-18 02:41:04,756 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-18 02:41:04,756 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1095340669] [2022-03-18 02:41:04,757 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-18 02:41:04,757 INFO L85 PathProgramCache]: Analyzing trace with hash -669670075, now seen corresponding path program 2 times [2022-03-18 02:41:04,757 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 02:41:04,757 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1834366133] [2022-03-18 02:41:04,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 02:41:04,757 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 02:41:04,768 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-03-18 02:41:04,769 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1437891102] [2022-03-18 02:41:04,769 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-18 02:41:04,769 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-18 02:41:04,769 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-18 02:41:04,770 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-18 02:41:04,780 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-03-18 02:41:04,832 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-18 02:41:04,832 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-18 02:41:04,833 INFO L263 TraceCheckSpWp]: Trace formula consists of 179 conjuncts, 15 conjunts are in the unsatisfiable core [2022-03-18 02:41:04,835 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-18 02:41:04,957 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2022-03-18 02:41:04,957 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-18 02:41:05,073 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 86 trivial. 0 not checked. [2022-03-18 02:41:05,073 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 02:41:05,073 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1834366133] [2022-03-18 02:41:05,073 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-03-18 02:41:05,074 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1437891102] [2022-03-18 02:41:05,074 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1437891102] provided 1 perfect and 1 imperfect interpolant sequences [2022-03-18 02:41:05,074 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-03-18 02:41:05,074 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 7 [2022-03-18 02:41:05,074 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-18 02:41:05,074 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1095340669] [2022-03-18 02:41:05,074 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1095340669] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 02:41:05,074 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 02:41:05,074 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-03-18 02:41:05,075 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [270983126] [2022-03-18 02:41:05,075 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-18 02:41:05,075 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-03-18 02:41:05,075 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-18 02:41:05,075 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-03-18 02:41:05,075 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-03-18 02:41:05,076 INFO L87 Difference]: Start difference. First operand 63 states and 77 transitions. Second operand has 5 states, 5 states have (on average 3.6) internal successors, (18), 4 states have internal predecessors, (18), 2 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-03-18 02:41:05,109 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 02:41:05,110 INFO L93 Difference]: Finished difference Result 69 states and 82 transitions. [2022-03-18 02:41:05,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-03-18 02:41:05,110 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.6) internal successors, (18), 4 states have internal predecessors, (18), 2 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 67 [2022-03-18 02:41:05,110 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 02:41:05,111 INFO L225 Difference]: With dead ends: 69 [2022-03-18 02:41:05,111 INFO L226 Difference]: Without dead ends: 67 [2022-03-18 02:41:05,111 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 126 SyntacticMatches, 2 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-03-18 02:41:05,112 INFO L912 BasicCegarLoop]: 40 mSDtfsCounter, 6 mSDsluCounter, 106 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 146 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-18 02:41:05,112 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [6 Valid, 146 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-18 02:41:05,113 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2022-03-18 02:41:05,122 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 59. [2022-03-18 02:41:05,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59 states, 33 states have (on average 1.121212121212121) internal successors, (37), 34 states have internal predecessors, (37), 18 states have call successors, (18), 8 states have call predecessors, (18), 7 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2022-03-18 02:41:05,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 71 transitions. [2022-03-18 02:41:05,123 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 71 transitions. Word has length 67 [2022-03-18 02:41:05,123 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 02:41:05,124 INFO L478 AbstractCegarLoop]: Abstraction has 59 states and 71 transitions. [2022-03-18 02:41:05,124 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.6) internal successors, (18), 4 states have internal predecessors, (18), 2 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-03-18 02:41:05,124 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 71 transitions. [2022-03-18 02:41:05,124 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-03-18 02:41:05,124 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 02:41:05,125 INFO L500 BasicCegarLoop]: trace histogram [6, 6, 6, 5, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 02:41:05,150 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-03-18 02:41:05,343 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 [2022-03-18 02:41:05,344 INFO L403 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 02:41:05,344 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 02:41:05,344 INFO L85 PathProgramCache]: Analyzing trace with hash -1682830289, now seen corresponding path program 1 times [2022-03-18 02:41:05,344 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-18 02:41:05,344 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [622500781] [2022-03-18 02:41:05,345 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-18 02:41:05,345 INFO L85 PathProgramCache]: Analyzing trace with hash -1682830289, now seen corresponding path program 2 times [2022-03-18 02:41:05,345 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 02:41:05,345 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [989391581] [2022-03-18 02:41:05,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 02:41:05,345 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 02:41:05,361 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-03-18 02:41:05,362 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [415122675] [2022-03-18 02:41:05,362 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-18 02:41:05,362 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-18 02:41:05,362 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-18 02:41:05,363 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-18 02:41:05,364 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-03-18 02:41:05,409 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-18 02:41:05,410 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-18 02:41:05,410 INFO L263 TraceCheckSpWp]: Trace formula consists of 191 conjuncts, 9 conjunts are in the unsatisfiable core [2022-03-18 02:41:05,412 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-18 02:41:05,550 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 14 proven. 11 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2022-03-18 02:41:05,550 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-18 02:41:05,701 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 14 proven. 11 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2022-03-18 02:41:05,701 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 02:41:05,701 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [989391581] [2022-03-18 02:41:05,701 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-03-18 02:41:05,702 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [415122675] [2022-03-18 02:41:05,702 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [415122675] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-18 02:41:05,702 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-03-18 02:41:05,702 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 9 [2022-03-18 02:41:05,702 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-18 02:41:05,702 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [622500781] [2022-03-18 02:41:05,702 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [622500781] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 02:41:05,702 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 02:41:05,702 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-03-18 02:41:05,702 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1071938552] [2022-03-18 02:41:05,703 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-18 02:41:05,703 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-03-18 02:41:05,703 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-18 02:41:05,703 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-03-18 02:41:05,703 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2022-03-18 02:41:05,704 INFO L87 Difference]: Start difference. First operand 59 states and 71 transitions. Second operand has 8 states, 8 states have (on average 3.0) internal successors, (24), 7 states have internal predecessors, (24), 5 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (11), 4 states have call predecessors, (11), 4 states have call successors, (11) [2022-03-18 02:41:05,852 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 02:41:05,852 INFO L93 Difference]: Finished difference Result 106 states and 146 transitions. [2022-03-18 02:41:05,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-03-18 02:41:05,853 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 3.0) internal successors, (24), 7 states have internal predecessors, (24), 5 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (11), 4 states have call predecessors, (11), 4 states have call successors, (11) Word has length 69 [2022-03-18 02:41:05,855 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 02:41:05,858 INFO L225 Difference]: With dead ends: 106 [2022-03-18 02:41:05,858 INFO L226 Difference]: Without dead ends: 98 [2022-03-18 02:41:05,858 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 129 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=47, Invalid=135, Unknown=0, NotChecked=0, Total=182 [2022-03-18 02:41:05,859 INFO L912 BasicCegarLoop]: 60 mSDtfsCounter, 30 mSDsluCounter, 273 mSDsCounter, 0 mSdLazyCounter, 100 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 333 SdHoareTripleChecker+Invalid, 153 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 100 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-18 02:41:05,859 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [35 Valid, 333 Invalid, 153 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 100 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-18 02:41:05,860 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2022-03-18 02:41:05,891 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 89. [2022-03-18 02:41:05,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 89 states, 47 states have (on average 1.1914893617021276) internal successors, (56), 48 states have internal predecessors, (56), 34 states have call successors, (34), 8 states have call predecessors, (34), 7 states have return successors, (32), 32 states have call predecessors, (32), 32 states have call successors, (32) [2022-03-18 02:41:05,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 122 transitions. [2022-03-18 02:41:05,894 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 122 transitions. Word has length 69 [2022-03-18 02:41:05,894 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 02:41:05,894 INFO L478 AbstractCegarLoop]: Abstraction has 89 states and 122 transitions. [2022-03-18 02:41:05,894 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 3.0) internal successors, (24), 7 states have internal predecessors, (24), 5 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (11), 4 states have call predecessors, (11), 4 states have call successors, (11) [2022-03-18 02:41:05,894 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 122 transitions. [2022-03-18 02:41:05,895 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-03-18 02:41:05,895 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 02:41:05,896 INFO L500 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 5, 5, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 02:41:05,912 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2022-03-18 02:41:06,099 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 [2022-03-18 02:41:06,100 INFO L403 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 02:41:06,100 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 02:41:06,100 INFO L85 PathProgramCache]: Analyzing trace with hash 376741854, now seen corresponding path program 1 times [2022-03-18 02:41:06,100 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-18 02:41:06,100 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1202049898] [2022-03-18 02:41:06,101 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-18 02:41:06,101 INFO L85 PathProgramCache]: Analyzing trace with hash 376741854, now seen corresponding path program 2 times [2022-03-18 02:41:06,101 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 02:41:06,101 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [875164652] [2022-03-18 02:41:06,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 02:41:06,101 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 02:41:06,112 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-03-18 02:41:06,112 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [921545684] [2022-03-18 02:41:06,112 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-18 02:41:06,112 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-18 02:41:06,112 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-18 02:41:06,113 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-18 02:41:06,115 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-03-18 02:41:06,164 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-18 02:41:06,164 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-18 02:41:06,165 INFO L263 TraceCheckSpWp]: Trace formula consists of 204 conjuncts, 22 conjunts are in the unsatisfiable core [2022-03-18 02:41:06,167 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-18 02:41:06,355 INFO L134 CoverageAnalysis]: Checked inductivity of 115 backedges. 15 proven. 12 refuted. 0 times theorem prover too weak. 88 trivial. 0 not checked. [2022-03-18 02:41:06,355 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-18 02:41:06,535 INFO L134 CoverageAnalysis]: Checked inductivity of 115 backedges. 20 proven. 7 refuted. 0 times theorem prover too weak. 88 trivial. 0 not checked. [2022-03-18 02:41:06,535 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 02:41:06,535 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [875164652] [2022-03-18 02:41:06,535 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-03-18 02:41:06,535 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [921545684] [2022-03-18 02:41:06,535 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [921545684] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-18 02:41:06,536 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-03-18 02:41:06,536 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 8] total 13 [2022-03-18 02:41:06,536 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-18 02:41:06,536 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1202049898] [2022-03-18 02:41:06,536 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1202049898] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 02:41:06,536 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 02:41:06,536 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-03-18 02:41:06,536 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [825025522] [2022-03-18 02:41:06,536 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-18 02:41:06,537 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-03-18 02:41:06,537 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-18 02:41:06,537 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-03-18 02:41:06,537 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2022-03-18 02:41:06,538 INFO L87 Difference]: Start difference. First operand 89 states and 122 transitions. Second operand has 10 states, 10 states have (on average 2.5) internal successors, (25), 9 states have internal predecessors, (25), 5 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (12), 5 states have call predecessors, (12), 5 states have call successors, (12) [2022-03-18 02:41:06,720 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 02:41:06,721 INFO L93 Difference]: Finished difference Result 124 states and 173 transitions. [2022-03-18 02:41:06,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-03-18 02:41:06,721 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.5) internal successors, (25), 9 states have internal predecessors, (25), 5 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (12), 5 states have call predecessors, (12), 5 states have call successors, (12) Word has length 75 [2022-03-18 02:41:06,721 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 02:41:06,722 INFO L225 Difference]: With dead ends: 124 [2022-03-18 02:41:06,722 INFO L226 Difference]: Without dead ends: 121 [2022-03-18 02:41:06,723 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 152 GetRequests, 137 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=50, Invalid=190, Unknown=0, NotChecked=0, Total=240 [2022-03-18 02:41:06,723 INFO L912 BasicCegarLoop]: 44 mSDtfsCounter, 21 mSDsluCounter, 246 mSDsCounter, 0 mSdLazyCounter, 196 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 290 SdHoareTripleChecker+Invalid, 211 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 196 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-18 02:41:06,724 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [25 Valid, 290 Invalid, 211 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 196 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-18 02:41:06,724 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121 states. [2022-03-18 02:41:06,743 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121 to 118. [2022-03-18 02:41:06,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 118 states, 62 states have (on average 1.2096774193548387) internal successors, (75), 64 states have internal predecessors, (75), 47 states have call successors, (47), 9 states have call predecessors, (47), 8 states have return successors, (44), 44 states have call predecessors, (44), 44 states have call successors, (44) [2022-03-18 02:41:06,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 166 transitions. [2022-03-18 02:41:06,744 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 166 transitions. Word has length 75 [2022-03-18 02:41:06,745 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 02:41:06,745 INFO L478 AbstractCegarLoop]: Abstraction has 118 states and 166 transitions. [2022-03-18 02:41:06,745 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 2.5) internal successors, (25), 9 states have internal predecessors, (25), 5 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (12), 5 states have call predecessors, (12), 5 states have call successors, (12) [2022-03-18 02:41:06,745 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 166 transitions. [2022-03-18 02:41:06,746 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2022-03-18 02:41:06,746 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 02:41:06,746 INFO L500 BasicCegarLoop]: trace histogram [7, 6, 6, 6, 6, 6, 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] [2022-03-18 02:41:06,771 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-03-18 02:41:06,959 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 [2022-03-18 02:41:06,960 INFO L403 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 02:41:06,960 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 02:41:06,960 INFO L85 PathProgramCache]: Analyzing trace with hash -1245952186, now seen corresponding path program 3 times [2022-03-18 02:41:06,960 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-18 02:41:06,960 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1542372890] [2022-03-18 02:41:06,961 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-18 02:41:06,961 INFO L85 PathProgramCache]: Analyzing trace with hash -1245952186, now seen corresponding path program 4 times [2022-03-18 02:41:06,961 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 02:41:06,961 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1355850045] [2022-03-18 02:41:06,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 02:41:06,961 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 02:41:06,971 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-03-18 02:41:06,971 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2110951644] [2022-03-18 02:41:06,971 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-18 02:41:06,971 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-18 02:41:06,971 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-18 02:41:06,972 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-18 02:41:06,979 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-03-18 02:41:07,022 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-18 02:41:07,022 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-18 02:41:07,023 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 33 conjunts are in the unsatisfiable core [2022-03-18 02:41:07,025 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-18 02:41:07,531 INFO L134 CoverageAnalysis]: Checked inductivity of 138 backedges. 18 proven. 15 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked. [2022-03-18 02:41:07,532 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-18 02:41:07,843 INFO L134 CoverageAnalysis]: Checked inductivity of 138 backedges. 12 proven. 6 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2022-03-18 02:41:07,843 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 02:41:07,843 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1355850045] [2022-03-18 02:41:07,843 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-03-18 02:41:07,843 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2110951644] [2022-03-18 02:41:07,844 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2110951644] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-18 02:41:07,844 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-03-18 02:41:07,844 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 9] total 16 [2022-03-18 02:41:07,844 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-18 02:41:07,844 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1542372890] [2022-03-18 02:41:07,844 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1542372890] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 02:41:07,844 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 02:41:07,844 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-03-18 02:41:07,844 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [38732996] [2022-03-18 02:41:07,845 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-18 02:41:07,845 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-03-18 02:41:07,845 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-18 02:41:07,845 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-03-18 02:41:07,845 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=198, Unknown=0, NotChecked=0, Total=240 [2022-03-18 02:41:07,846 INFO L87 Difference]: Start difference. First operand 118 states and 166 transitions. Second operand has 11 states, 11 states have (on average 2.272727272727273) internal successors, (25), 9 states have internal predecessors, (25), 5 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 5 states have call predecessors, (13), 5 states have call successors, (13) [2022-03-18 02:41:08,101 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 02:41:08,101 INFO L93 Difference]: Finished difference Result 130 states and 176 transitions. [2022-03-18 02:41:08,102 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-03-18 02:41:08,102 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.272727272727273) internal successors, (25), 9 states have internal predecessors, (25), 5 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 5 states have call predecessors, (13), 5 states have call successors, (13) Word has length 80 [2022-03-18 02:41:08,102 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 02:41:08,103 INFO L225 Difference]: With dead ends: 130 [2022-03-18 02:41:08,103 INFO L226 Difference]: Without dead ends: 128 [2022-03-18 02:41:08,104 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 163 GetRequests, 144 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=68, Invalid=312, Unknown=0, NotChecked=0, Total=380 [2022-03-18 02:41:08,104 INFO L912 BasicCegarLoop]: 46 mSDtfsCounter, 30 mSDsluCounter, 250 mSDsCounter, 0 mSdLazyCounter, 246 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 296 SdHoareTripleChecker+Invalid, 263 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 246 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-18 02:41:08,105 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [41 Valid, 296 Invalid, 263 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 246 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-03-18 02:41:08,105 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states. [2022-03-18 02:41:08,135 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 126. [2022-03-18 02:41:08,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 126 states, 68 states have (on average 1.1911764705882353) internal successors, (81), 70 states have internal predecessors, (81), 47 states have call successors, (47), 11 states have call predecessors, (47), 10 states have return successors, (44), 44 states have call predecessors, (44), 44 states have call successors, (44) [2022-03-18 02:41:08,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 172 transitions. [2022-03-18 02:41:08,137 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 172 transitions. Word has length 80 [2022-03-18 02:41:08,137 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 02:41:08,137 INFO L478 AbstractCegarLoop]: Abstraction has 126 states and 172 transitions. [2022-03-18 02:41:08,137 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.272727272727273) internal successors, (25), 9 states have internal predecessors, (25), 5 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 5 states have call predecessors, (13), 5 states have call successors, (13) [2022-03-18 02:41:08,138 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 172 transitions. [2022-03-18 02:41:08,138 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2022-03-18 02:41:08,138 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 02:41:08,138 INFO L500 BasicCegarLoop]: trace histogram [8, 7, 7, 6, 6, 6, 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] [2022-03-18 02:41:08,159 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-03-18 02:41:08,356 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 [2022-03-18 02:41:08,356 INFO L403 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 02:41:08,356 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 02:41:08,356 INFO L85 PathProgramCache]: Analyzing trace with hash 901388446, now seen corresponding path program 5 times [2022-03-18 02:41:08,356 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-18 02:41:08,356 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1345731094] [2022-03-18 02:41:08,357 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-18 02:41:08,357 INFO L85 PathProgramCache]: Analyzing trace with hash 901388446, now seen corresponding path program 6 times [2022-03-18 02:41:08,357 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 02:41:08,357 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1727422500] [2022-03-18 02:41:08,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 02:41:08,357 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 02:41:08,366 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-03-18 02:41:08,367 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [769363968] [2022-03-18 02:41:08,367 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-18 02:41:08,367 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-18 02:41:08,367 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-18 02:41:08,368 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) [2022-03-18 02:41:08,377 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-03-18 02:41:08,433 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2022-03-18 02:41:08,433 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-18 02:41:08,435 INFO L263 TraceCheckSpWp]: Trace formula consists of 195 conjuncts, 45 conjunts are in the unsatisfiable core [2022-03-18 02:41:08,437 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-18 02:41:08,984 INFO L134 CoverageAnalysis]: Checked inductivity of 165 backedges. 30 proven. 21 refuted. 0 times theorem prover too weak. 114 trivial. 0 not checked. [2022-03-18 02:41:08,984 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-18 02:41:09,089 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 02:41:09,089 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1727422500] [2022-03-18 02:41:09,090 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-03-18 02:41:09,090 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [769363968] [2022-03-18 02:41:09,090 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [769363968] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-18 02:41:09,090 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-03-18 02:41:09,090 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2022-03-18 02:41:09,090 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-18 02:41:09,090 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1345731094] [2022-03-18 02:41:09,090 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1345731094] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 02:41:09,090 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 02:41:09,090 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-03-18 02:41:09,091 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [458012199] [2022-03-18 02:41:09,091 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-18 02:41:09,091 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-03-18 02:41:09,091 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-18 02:41:09,091 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-03-18 02:41:09,091 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2022-03-18 02:41:09,092 INFO L87 Difference]: Start difference. First operand 126 states and 172 transitions. Second operand has 11 states, 11 states have (on average 2.272727272727273) internal successors, (25), 10 states have internal predecessors, (25), 5 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (14), 5 states have call predecessors, (14), 5 states have call successors, (14) [2022-03-18 02:41:09,363 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 02:41:09,363 INFO L93 Difference]: Finished difference Result 134 states and 179 transitions. [2022-03-18 02:41:09,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-03-18 02:41:09,365 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.272727272727273) internal successors, (25), 10 states have internal predecessors, (25), 5 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (14), 5 states have call predecessors, (14), 5 states have call successors, (14) Word has length 85 [2022-03-18 02:41:09,365 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 02:41:09,367 INFO L225 Difference]: With dead ends: 134 [2022-03-18 02:41:09,367 INFO L226 Difference]: Without dead ends: 132 [2022-03-18 02:41:09,367 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 77 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=47, Invalid=193, Unknown=0, NotChecked=0, Total=240 [2022-03-18 02:41:09,368 INFO L912 BasicCegarLoop]: 40 mSDtfsCounter, 24 mSDsluCounter, 259 mSDsCounter, 0 mSdLazyCounter, 269 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 299 SdHoareTripleChecker+Invalid, 280 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 269 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-18 02:41:09,368 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [33 Valid, 299 Invalid, 280 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 269 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-03-18 02:41:09,368 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132 states. [2022-03-18 02:41:09,387 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132 to 130. [2022-03-18 02:41:09,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 130 states, 71 states have (on average 1.1830985915492958) internal successors, (84), 73 states have internal predecessors, (84), 47 states have call successors, (47), 12 states have call predecessors, (47), 11 states have return successors, (44), 44 states have call predecessors, (44), 44 states have call successors, (44) [2022-03-18 02:41:09,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 175 transitions. [2022-03-18 02:41:09,388 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 175 transitions. Word has length 85 [2022-03-18 02:41:09,388 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 02:41:09,388 INFO L478 AbstractCegarLoop]: Abstraction has 130 states and 175 transitions. [2022-03-18 02:41:09,389 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.272727272727273) internal successors, (25), 10 states have internal predecessors, (25), 5 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (14), 5 states have call predecessors, (14), 5 states have call successors, (14) [2022-03-18 02:41:09,389 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 175 transitions. [2022-03-18 02:41:09,389 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2022-03-18 02:41:09,389 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 02:41:09,390 INFO L500 BasicCegarLoop]: trace histogram [9, 8, 8, 6, 6, 6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 02:41:09,412 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-03-18 02:41:09,603 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 [2022-03-18 02:41:09,603 INFO L403 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 02:41:09,604 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 02:41:09,604 INFO L85 PathProgramCache]: Analyzing trace with hash -686534738, now seen corresponding path program 1 times [2022-03-18 02:41:09,604 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-18 02:41:09,604 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [558308267] [2022-03-18 02:41:09,604 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-18 02:41:09,605 INFO L85 PathProgramCache]: Analyzing trace with hash -686534738, now seen corresponding path program 2 times [2022-03-18 02:41:09,605 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 02:41:09,605 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2077951563] [2022-03-18 02:41:09,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 02:41:09,605 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 02:41:09,614 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-03-18 02:41:09,615 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2019876115] [2022-03-18 02:41:09,615 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-18 02:41:09,615 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-18 02:41:09,615 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-18 02:41:09,616 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) [2022-03-18 02:41:09,631 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-03-18 02:41:09,674 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-18 02:41:09,674 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-18 02:41:09,675 INFO L263 TraceCheckSpWp]: Trace formula consists of 233 conjuncts, 39 conjunts are in the unsatisfiable core [2022-03-18 02:41:09,678 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-18 02:41:10,122 INFO L134 CoverageAnalysis]: Checked inductivity of 196 backedges. 16 proven. 8 refuted. 0 times theorem prover too weak. 172 trivial. 0 not checked. [2022-03-18 02:41:10,124 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-18 02:41:10,487 INFO L134 CoverageAnalysis]: Checked inductivity of 196 backedges. 16 proven. 8 refuted. 0 times theorem prover too weak. 172 trivial. 0 not checked. [2022-03-18 02:41:10,487 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 02:41:10,487 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2077951563] [2022-03-18 02:41:10,487 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-03-18 02:41:10,487 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2019876115] [2022-03-18 02:41:10,488 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2019876115] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-18 02:41:10,488 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-03-18 02:41:10,488 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 14 [2022-03-18 02:41:10,488 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-18 02:41:10,488 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [558308267] [2022-03-18 02:41:10,488 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [558308267] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 02:41:10,488 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 02:41:10,488 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-03-18 02:41:10,488 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [39679864] [2022-03-18 02:41:10,488 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-18 02:41:10,489 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-03-18 02:41:10,489 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-18 02:41:10,489 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-03-18 02:41:10,489 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=145, Unknown=0, NotChecked=0, Total=182 [2022-03-18 02:41:10,489 INFO L87 Difference]: Start difference. First operand 130 states and 175 transitions. Second operand has 9 states, 8 states have (on average 2.875) internal successors, (23), 8 states have internal predecessors, (23), 5 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (15), 4 states have call predecessors, (15), 4 states have call successors, (15) [2022-03-18 02:41:10,738 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 02:41:10,738 INFO L93 Difference]: Finished difference Result 157 states and 211 transitions. [2022-03-18 02:41:10,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-03-18 02:41:10,739 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.875) internal successors, (23), 8 states have internal predecessors, (23), 5 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (15), 4 states have call predecessors, (15), 4 states have call successors, (15) Word has length 91 [2022-03-18 02:41:10,739 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 02:41:10,740 INFO L225 Difference]: With dead ends: 157 [2022-03-18 02:41:10,740 INFO L226 Difference]: Without dead ends: 154 [2022-03-18 02:41:10,741 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 185 GetRequests, 168 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=63, Invalid=243, Unknown=0, NotChecked=0, Total=306 [2022-03-18 02:41:10,741 INFO L912 BasicCegarLoop]: 57 mSDtfsCounter, 19 mSDsluCounter, 321 mSDsCounter, 0 mSdLazyCounter, 220 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 378 SdHoareTripleChecker+Invalid, 239 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 220 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-18 02:41:10,741 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [27 Valid, 378 Invalid, 239 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 220 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-03-18 02:41:10,742 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154 states. [2022-03-18 02:41:10,766 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154 to 153. [2022-03-18 02:41:10,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 153 states, 84 states have (on average 1.1785714285714286) internal successors, (99), 86 states have internal predecessors, (99), 55 states have call successors, (55), 14 states have call predecessors, (55), 13 states have return successors, (52), 52 states have call predecessors, (52), 52 states have call successors, (52) [2022-03-18 02:41:10,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 206 transitions. [2022-03-18 02:41:10,768 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 206 transitions. Word has length 91 [2022-03-18 02:41:10,769 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 02:41:10,769 INFO L478 AbstractCegarLoop]: Abstraction has 153 states and 206 transitions. [2022-03-18 02:41:10,769 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 2.875) internal successors, (23), 8 states have internal predecessors, (23), 5 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (15), 4 states have call predecessors, (15), 4 states have call successors, (15) [2022-03-18 02:41:10,769 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 206 transitions. [2022-03-18 02:41:10,770 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2022-03-18 02:41:10,770 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 02:41:10,770 INFO L500 BasicCegarLoop]: trace histogram [10, 9, 9, 6, 6, 6, 3, 3, 3, 3, 3, 3, 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] [2022-03-18 02:41:10,796 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-03-18 02:41:10,983 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 [2022-03-18 02:41:10,983 INFO L403 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 02:41:10,984 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 02:41:10,984 INFO L85 PathProgramCache]: Analyzing trace with hash -663071842, now seen corresponding path program 7 times [2022-03-18 02:41:10,984 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-18 02:41:10,984 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [936853281] [2022-03-18 02:41:10,985 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-18 02:41:10,985 INFO L85 PathProgramCache]: Analyzing trace with hash -663071842, now seen corresponding path program 8 times [2022-03-18 02:41:10,985 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 02:41:10,985 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [903200062] [2022-03-18 02:41:10,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 02:41:10,985 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 02:41:10,994 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-03-18 02:41:10,994 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1188375349] [2022-03-18 02:41:10,994 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-18 02:41:10,994 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-18 02:41:10,994 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-18 02:41:10,999 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) [2022-03-18 02:41:11,000 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-03-18 02:41:11,052 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-18 02:41:11,052 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-18 02:41:11,053 INFO L263 TraceCheckSpWp]: Trace formula consists of 262 conjuncts, 5 conjunts are in the unsatisfiable core [2022-03-18 02:41:11,055 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-18 02:41:11,185 INFO L134 CoverageAnalysis]: Checked inductivity of 241 backedges. 67 proven. 0 refuted. 0 times theorem prover too weak. 174 trivial. 0 not checked. [2022-03-18 02:41:11,185 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-03-18 02:41:11,185 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 02:41:11,186 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [903200062] [2022-03-18 02:41:11,186 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-03-18 02:41:11,186 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1188375349] [2022-03-18 02:41:11,186 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1188375349] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 02:41:11,186 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 02:41:11,186 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-03-18 02:41:11,186 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-18 02:41:11,186 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [936853281] [2022-03-18 02:41:11,186 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [936853281] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 02:41:11,186 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 02:41:11,187 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-03-18 02:41:11,187 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [524453641] [2022-03-18 02:41:11,187 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-18 02:41:11,187 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-03-18 02:41:11,187 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-18 02:41:11,187 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-03-18 02:41:11,187 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-03-18 02:41:11,188 INFO L87 Difference]: Start difference. First operand 153 states and 206 transitions. Second operand has 5 states, 5 states have (on average 5.8) internal successors, (29), 5 states have internal predecessors, (29), 3 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2022-03-18 02:41:11,282 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 02:41:11,282 INFO L93 Difference]: Finished difference Result 201 states and 280 transitions. [2022-03-18 02:41:11,283 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-03-18 02:41:11,283 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.8) internal successors, (29), 5 states have internal predecessors, (29), 3 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) Word has length 100 [2022-03-18 02:41:11,283 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 02:41:11,284 INFO L225 Difference]: With dead ends: 201 [2022-03-18 02:41:11,284 INFO L226 Difference]: Without dead ends: 156 [2022-03-18 02:41:11,288 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 96 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-03-18 02:41:11,288 INFO L912 BasicCegarLoop]: 58 mSDtfsCounter, 6 mSDsluCounter, 130 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 188 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-18 02:41:11,289 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [11 Valid, 188 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-18 02:41:11,289 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 156 states. [2022-03-18 02:41:11,316 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 156 to 147. [2022-03-18 02:41:11,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 147 states, 78 states have (on average 1.1282051282051282) internal successors, (88), 80 states have internal predecessors, (88), 55 states have call successors, (55), 14 states have call predecessors, (55), 13 states have return successors, (52), 52 states have call predecessors, (52), 52 states have call successors, (52) [2022-03-18 02:41:11,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147 states to 147 states and 195 transitions. [2022-03-18 02:41:11,318 INFO L78 Accepts]: Start accepts. Automaton has 147 states and 195 transitions. Word has length 100 [2022-03-18 02:41:11,320 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 02:41:11,320 INFO L478 AbstractCegarLoop]: Abstraction has 147 states and 195 transitions. [2022-03-18 02:41:11,320 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.8) internal successors, (29), 5 states have internal predecessors, (29), 3 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2022-03-18 02:41:11,320 INFO L276 IsEmpty]: Start isEmpty. Operand 147 states and 195 transitions. [2022-03-18 02:41:11,321 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2022-03-18 02:41:11,321 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 02:41:11,321 INFO L500 BasicCegarLoop]: trace histogram [12, 11, 11, 6, 6, 6, 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] [2022-03-18 02:41:11,347 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2022-03-18 02:41:11,541 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 [2022-03-18 02:41:11,542 INFO L403 AbstractCegarLoop]: === Iteration 14 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 02:41:11,542 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 02:41:11,542 INFO L85 PathProgramCache]: Analyzing trace with hash -428114403, now seen corresponding path program 1 times [2022-03-18 02:41:11,542 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-18 02:41:11,542 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [392906981] [2022-03-18 02:41:11,543 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-18 02:41:11,543 INFO L85 PathProgramCache]: Analyzing trace with hash -428114403, now seen corresponding path program 2 times [2022-03-18 02:41:11,543 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 02:41:11,543 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [535932150] [2022-03-18 02:41:11,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 02:41:11,543 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 02:41:11,551 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-03-18 02:41:11,551 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [343723881] [2022-03-18 02:41:11,552 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-18 02:41:11,552 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-18 02:41:11,552 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-18 02:41:11,553 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) [2022-03-18 02:41:11,571 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-03-18 02:41:11,614 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-18 02:41:11,614 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-18 02:41:11,615 INFO L263 TraceCheckSpWp]: Trace formula consists of 264 conjuncts, 66 conjunts are in the unsatisfiable core [2022-03-18 02:41:11,618 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-18 02:41:12,713 INFO L134 CoverageAnalysis]: Checked inductivity of 320 backedges. 87 proven. 52 refuted. 0 times theorem prover too weak. 181 trivial. 0 not checked. [2022-03-18 02:41:12,713 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-18 02:41:29,511 INFO L134 CoverageAnalysis]: Checked inductivity of 320 backedges. 81 proven. 43 refuted. 0 times theorem prover too weak. 196 trivial. 0 not checked. [2022-03-18 02:41:29,511 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 02:41:29,511 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [535932150] [2022-03-18 02:41:29,511 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-03-18 02:41:29,511 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [343723881] [2022-03-18 02:41:29,512 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [343723881] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-18 02:41:29,512 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-03-18 02:41:29,512 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 25 [2022-03-18 02:41:29,512 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-18 02:41:29,512 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [392906981] [2022-03-18 02:41:29,512 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [392906981] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 02:41:29,512 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 02:41:29,512 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2022-03-18 02:41:29,512 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1325218806] [2022-03-18 02:41:29,512 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-18 02:41:29,513 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-03-18 02:41:29,513 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-18 02:41:29,513 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-03-18 02:41:29,514 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=125, Invalid=474, Unknown=1, NotChecked=0, Total=600 [2022-03-18 02:41:29,514 INFO L87 Difference]: Start difference. First operand 147 states and 195 transitions. Second operand has 15 states, 15 states have (on average 2.0) internal successors, (30), 12 states have internal predecessors, (30), 7 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (18), 6 states have call predecessors, (18), 7 states have call successors, (18) [2022-03-18 02:41:34,647 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 02:41:34,648 INFO L93 Difference]: Finished difference Result 154 states and 201 transitions. [2022-03-18 02:41:34,648 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-03-18 02:41:34,648 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.0) internal successors, (30), 12 states have internal predecessors, (30), 7 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (18), 6 states have call predecessors, (18), 7 states have call successors, (18) Word has length 107 [2022-03-18 02:41:34,649 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 02:41:34,650 INFO L225 Difference]: With dead ends: 154 [2022-03-18 02:41:34,650 INFO L226 Difference]: Without dead ends: 152 [2022-03-18 02:41:34,650 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 217 GetRequests, 188 SyntacticMatches, 2 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 181 ImplicationChecksByTransitivity, 12.8s TimeCoverageRelationStatistics Valid=158, Invalid=653, Unknown=1, NotChecked=0, Total=812 [2022-03-18 02:41:34,651 INFO L912 BasicCegarLoop]: 37 mSDtfsCounter, 34 mSDsluCounter, 359 mSDsCounter, 0 mSdLazyCounter, 554 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 396 SdHoareTripleChecker+Invalid, 585 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 554 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-03-18 02:41:34,651 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [48 Valid, 396 Invalid, 585 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 554 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-03-18 02:41:34,651 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152 states. [2022-03-18 02:41:34,670 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152 to 128. [2022-03-18 02:41:34,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 128 states, 68 states have (on average 1.1323529411764706) internal successors, (77), 70 states have internal predecessors, (77), 47 states have call successors, (47), 13 states have call predecessors, (47), 12 states have return successors, (44), 44 states have call predecessors, (44), 44 states have call successors, (44) [2022-03-18 02:41:34,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 168 transitions. [2022-03-18 02:41:34,671 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 168 transitions. Word has length 107 [2022-03-18 02:41:34,671 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 02:41:34,672 INFO L478 AbstractCegarLoop]: Abstraction has 128 states and 168 transitions. [2022-03-18 02:41:34,672 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 2.0) internal successors, (30), 12 states have internal predecessors, (30), 7 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (18), 6 states have call predecessors, (18), 7 states have call successors, (18) [2022-03-18 02:41:34,672 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 168 transitions. [2022-03-18 02:41:34,673 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2022-03-18 02:41:34,673 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 02:41:34,673 INFO L500 BasicCegarLoop]: trace histogram [13, 12, 12, 6, 6, 6, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 02:41:34,700 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2022-03-18 02:41:34,892 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 [2022-03-18 02:41:34,892 INFO L403 AbstractCegarLoop]: === Iteration 15 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 02:41:34,892 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 02:41:34,892 INFO L85 PathProgramCache]: Analyzing trace with hash 1185765869, now seen corresponding path program 3 times [2022-03-18 02:41:34,893 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-18 02:41:34,893 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [408875002] [2022-03-18 02:41:34,893 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-18 02:41:34,893 INFO L85 PathProgramCache]: Analyzing trace with hash 1185765869, now seen corresponding path program 4 times [2022-03-18 02:41:34,893 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 02:41:34,893 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1381305997] [2022-03-18 02:41:34,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 02:41:34,894 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 02:41:34,901 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-03-18 02:41:34,901 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [635339660] [2022-03-18 02:41:34,901 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-18 02:41:34,901 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-18 02:41:34,901 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-18 02:41:34,902 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) [2022-03-18 02:41:34,903 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-03-18 02:41:34,954 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-18 02:41:34,954 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-18 02:41:34,955 INFO L263 TraceCheckSpWp]: Trace formula consists of 228 conjuncts, 49 conjunts are in the unsatisfiable core [2022-03-18 02:41:34,957 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-18 02:41:35,615 INFO L134 CoverageAnalysis]: Checked inductivity of 368 backedges. 70 proven. 34 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2022-03-18 02:41:35,616 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-18 02:41:38,120 INFO L134 CoverageAnalysis]: Checked inductivity of 368 backedges. 70 proven. 34 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2022-03-18 02:41:38,120 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 02:41:38,121 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1381305997] [2022-03-18 02:41:38,121 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-03-18 02:41:38,121 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [635339660] [2022-03-18 02:41:38,121 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [635339660] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-18 02:41:38,121 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-03-18 02:41:38,121 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 15] total 24 [2022-03-18 02:41:38,121 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-18 02:41:38,121 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [408875002] [2022-03-18 02:41:38,121 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [408875002] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 02:41:38,121 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 02:41:38,121 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-03-18 02:41:38,121 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [607739969] [2022-03-18 02:41:38,121 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-18 02:41:38,122 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-03-18 02:41:38,122 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-18 02:41:38,122 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-03-18 02:41:38,122 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=110, Invalid=442, Unknown=0, NotChecked=0, Total=552 [2022-03-18 02:41:38,122 INFO L87 Difference]: Start difference. First operand 128 states and 168 transitions. Second operand has 14 states, 13 states have (on average 2.1538461538461537) internal successors, (28), 12 states have internal predecessors, (28), 7 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (19), 6 states have call predecessors, (19), 6 states have call successors, (19) [2022-03-18 02:41:39,134 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 02:41:39,135 INFO L93 Difference]: Finished difference Result 162 states and 215 transitions. [2022-03-18 02:41:39,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-03-18 02:41:39,135 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 2.1538461538461537) internal successors, (28), 12 states have internal predecessors, (28), 7 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (19), 6 states have call predecessors, (19), 6 states have call successors, (19) Word has length 113 [2022-03-18 02:41:39,136 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 02:41:39,137 INFO L225 Difference]: With dead ends: 162 [2022-03-18 02:41:39,137 INFO L226 Difference]: Without dead ends: 159 [2022-03-18 02:41:39,137 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 229 GetRequests, 201 SyntacticMatches, 2 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 146 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=149, Invalid=607, Unknown=0, NotChecked=0, Total=756 [2022-03-18 02:41:39,138 INFO L912 BasicCegarLoop]: 51 mSDtfsCounter, 27 mSDsluCounter, 498 mSDsCounter, 0 mSdLazyCounter, 588 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 549 SdHoareTripleChecker+Invalid, 615 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 588 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-03-18 02:41:39,138 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [38 Valid, 549 Invalid, 615 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 588 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-03-18 02:41:39,138 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159 states. [2022-03-18 02:41:39,159 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 157. [2022-03-18 02:41:39,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 157 states, 83 states have (on average 1.1325301204819278) internal successors, (94), 85 states have internal predecessors, (94), 59 states have call successors, (59), 15 states have call predecessors, (59), 14 states have return successors, (56), 56 states have call predecessors, (56), 56 states have call successors, (56) [2022-03-18 02:41:39,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 209 transitions. [2022-03-18 02:41:39,161 INFO L78 Accepts]: Start accepts. Automaton has 157 states and 209 transitions. Word has length 113 [2022-03-18 02:41:39,161 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 02:41:39,161 INFO L478 AbstractCegarLoop]: Abstraction has 157 states and 209 transitions. [2022-03-18 02:41:39,161 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 2.1538461538461537) internal successors, (28), 12 states have internal predecessors, (28), 7 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (19), 6 states have call predecessors, (19), 6 states have call successors, (19) [2022-03-18 02:41:39,161 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 209 transitions. [2022-03-18 02:41:39,162 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2022-03-18 02:41:39,162 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 02:41:39,162 INFO L500 BasicCegarLoop]: trace histogram [13, 12, 12, 6, 6, 6, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 02:41:39,180 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2022-03-18 02:41:39,367 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 [2022-03-18 02:41:39,368 INFO L403 AbstractCegarLoop]: === Iteration 16 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 02:41:39,368 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 02:41:39,368 INFO L85 PathProgramCache]: Analyzing trace with hash 884638574, now seen corresponding path program 5 times [2022-03-18 02:41:39,368 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-18 02:41:39,368 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [371884218] [2022-03-18 02:41:39,369 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-18 02:41:39,369 INFO L85 PathProgramCache]: Analyzing trace with hash 884638574, now seen corresponding path program 6 times [2022-03-18 02:41:39,369 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 02:41:39,369 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [487591227] [2022-03-18 02:41:39,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 02:41:39,369 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 02:41:39,377 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-03-18 02:41:39,377 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [480227493] [2022-03-18 02:41:39,377 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-18 02:41:39,377 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-18 02:41:39,377 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-18 02:41:39,378 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) [2022-03-18 02:41:39,381 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2022-03-18 02:41:39,427 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2022-03-18 02:41:39,427 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-18 02:41:39,428 INFO L263 TraceCheckSpWp]: Trace formula consists of 255 conjuncts, 7 conjunts are in the unsatisfiable core [2022-03-18 02:41:39,430 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-18 02:41:39,572 INFO L134 CoverageAnalysis]: Checked inductivity of 373 backedges. 40 proven. 9 refuted. 0 times theorem prover too weak. 324 trivial. 0 not checked. [2022-03-18 02:41:39,572 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-18 02:41:39,722 INFO L134 CoverageAnalysis]: Checked inductivity of 373 backedges. 40 proven. 9 refuted. 0 times theorem prover too weak. 324 trivial. 0 not checked. [2022-03-18 02:41:39,722 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 02:41:39,722 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [487591227] [2022-03-18 02:41:39,722 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-03-18 02:41:39,722 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [480227493] [2022-03-18 02:41:39,722 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [480227493] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-18 02:41:39,722 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-03-18 02:41:39,722 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 7 [2022-03-18 02:41:39,722 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-18 02:41:39,722 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [371884218] [2022-03-18 02:41:39,723 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [371884218] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 02:41:39,723 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 02:41:39,723 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-03-18 02:41:39,723 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2119281512] [2022-03-18 02:41:39,723 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-18 02:41:39,723 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-03-18 02:41:39,723 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-18 02:41:39,723 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-03-18 02:41:39,723 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-03-18 02:41:39,724 INFO L87 Difference]: Start difference. First operand 157 states and 209 transitions. Second operand has 7 states, 7 states have (on average 4.0) internal successors, (28), 7 states have internal predecessors, (28), 4 states have call successors, (21), 2 states have call predecessors, (21), 1 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) [2022-03-18 02:41:39,900 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 02:41:39,901 INFO L93 Difference]: Finished difference Result 211 states and 298 transitions. [2022-03-18 02:41:39,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-03-18 02:41:39,901 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 4.0) internal successors, (28), 7 states have internal predecessors, (28), 4 states have call successors, (21), 2 states have call predecessors, (21), 1 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) Word has length 116 [2022-03-18 02:41:39,901 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 02:41:39,903 INFO L225 Difference]: With dead ends: 211 [2022-03-18 02:41:39,903 INFO L226 Difference]: Without dead ends: 203 [2022-03-18 02:41:39,903 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 242 GetRequests, 227 SyntacticMatches, 2 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=62, Invalid=148, Unknown=0, NotChecked=0, Total=210 [2022-03-18 02:41:39,904 INFO L912 BasicCegarLoop]: 85 mSDtfsCounter, 14 mSDsluCounter, 274 mSDsCounter, 0 mSdLazyCounter, 126 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 359 SdHoareTripleChecker+Invalid, 166 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 126 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-18 02:41:39,904 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [19 Valid, 359 Invalid, 166 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 126 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-18 02:41:39,905 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 203 states. [2022-03-18 02:41:39,946 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 203 to 184. [2022-03-18 02:41:39,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 184 states, 94 states have (on average 1.1595744680851063) internal successors, (109), 96 states have internal predecessors, (109), 75 states have call successors, (75), 15 states have call predecessors, (75), 14 states have return successors, (72), 72 states have call predecessors, (72), 72 states have call successors, (72) [2022-03-18 02:41:39,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 184 states to 184 states and 256 transitions. [2022-03-18 02:41:39,948 INFO L78 Accepts]: Start accepts. Automaton has 184 states and 256 transitions. Word has length 116 [2022-03-18 02:41:39,948 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 02:41:39,948 INFO L478 AbstractCegarLoop]: Abstraction has 184 states and 256 transitions. [2022-03-18 02:41:39,948 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 4.0) internal successors, (28), 7 states have internal predecessors, (28), 4 states have call successors, (21), 2 states have call predecessors, (21), 1 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) [2022-03-18 02:41:39,949 INFO L276 IsEmpty]: Start isEmpty. Operand 184 states and 256 transitions. [2022-03-18 02:41:39,949 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2022-03-18 02:41:39,949 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 02:41:39,950 INFO L500 BasicCegarLoop]: trace histogram [14, 13, 13, 6, 6, 6, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 02:41:39,973 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2022-03-18 02:41:40,173 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 [2022-03-18 02:41:40,174 INFO L403 AbstractCegarLoop]: === Iteration 17 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 02:41:40,174 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 02:41:40,174 INFO L85 PathProgramCache]: Analyzing trace with hash -743412771, now seen corresponding path program 3 times [2022-03-18 02:41:40,174 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-18 02:41:40,174 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1831015658] [2022-03-18 02:41:40,175 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-18 02:41:40,175 INFO L85 PathProgramCache]: Analyzing trace with hash -743412771, now seen corresponding path program 4 times [2022-03-18 02:41:40,175 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 02:41:40,175 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [427568207] [2022-03-18 02:41:40,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 02:41:40,175 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 02:41:40,182 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-03-18 02:41:40,182 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [524228685] [2022-03-18 02:41:40,182 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-18 02:41:40,182 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-18 02:41:40,183 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-18 02:41:40,184 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) [2022-03-18 02:41:40,189 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2022-03-18 02:41:40,231 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-18 02:41:40,231 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-18 02:41:40,232 INFO L263 TraceCheckSpWp]: Trace formula consists of 257 conjuncts, 14 conjunts are in the unsatisfiable core [2022-03-18 02:41:40,234 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-18 02:41:40,412 INFO L134 CoverageAnalysis]: Checked inductivity of 432 backedges. 73 proven. 7 refuted. 0 times theorem prover too weak. 352 trivial. 0 not checked. [2022-03-18 02:41:40,412 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-18 02:41:40,606 INFO L134 CoverageAnalysis]: Checked inductivity of 432 backedges. 73 proven. 7 refuted. 0 times theorem prover too weak. 352 trivial. 0 not checked. [2022-03-18 02:41:40,606 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 02:41:40,606 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [427568207] [2022-03-18 02:41:40,606 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-03-18 02:41:40,607 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [524228685] [2022-03-18 02:41:40,607 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [524228685] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-18 02:41:40,607 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-03-18 02:41:40,607 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 9 [2022-03-18 02:41:40,607 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-18 02:41:40,607 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1831015658] [2022-03-18 02:41:40,607 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1831015658] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 02:41:40,607 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 02:41:40,607 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-03-18 02:41:40,607 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1487863971] [2022-03-18 02:41:40,607 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-18 02:41:40,608 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-03-18 02:41:40,608 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-18 02:41:40,608 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-03-18 02:41:40,608 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2022-03-18 02:41:40,608 INFO L87 Difference]: Start difference. First operand 184 states and 256 transitions. Second operand has 8 states, 8 states have (on average 3.5) internal successors, (28), 7 states have internal predecessors, (28), 3 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2022-03-18 02:41:40,787 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 02:41:40,787 INFO L93 Difference]: Finished difference Result 198 states and 267 transitions. [2022-03-18 02:41:40,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-03-18 02:41:40,787 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 3.5) internal successors, (28), 7 states have internal predecessors, (28), 3 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) Word has length 122 [2022-03-18 02:41:40,788 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 02:41:40,789 INFO L225 Difference]: With dead ends: 198 [2022-03-18 02:41:40,789 INFO L226 Difference]: Without dead ends: 195 [2022-03-18 02:41:40,789 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 246 GetRequests, 235 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2022-03-18 02:41:40,789 INFO L912 BasicCegarLoop]: 36 mSDtfsCounter, 17 mSDsluCounter, 146 mSDsCounter, 0 mSdLazyCounter, 86 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 182 SdHoareTripleChecker+Invalid, 103 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 86 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-18 02:41:40,790 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [20 Valid, 182 Invalid, 103 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 86 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-18 02:41:40,790 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 195 states. [2022-03-18 02:41:40,818 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 195 to 194. [2022-03-18 02:41:40,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 194 states, 103 states have (on average 1.145631067961165) internal successors, (118), 104 states have internal predecessors, (118), 73 states have call successors, (73), 18 states have call predecessors, (73), 17 states have return successors, (71), 71 states have call predecessors, (71), 71 states have call successors, (71) [2022-03-18 02:41:40,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 194 states to 194 states and 262 transitions. [2022-03-18 02:41:40,820 INFO L78 Accepts]: Start accepts. Automaton has 194 states and 262 transitions. Word has length 122 [2022-03-18 02:41:40,820 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 02:41:40,820 INFO L478 AbstractCegarLoop]: Abstraction has 194 states and 262 transitions. [2022-03-18 02:41:40,820 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 3.5) internal successors, (28), 7 states have internal predecessors, (28), 3 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2022-03-18 02:41:40,820 INFO L276 IsEmpty]: Start isEmpty. Operand 194 states and 262 transitions. [2022-03-18 02:41:40,821 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2022-03-18 02:41:40,821 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 02:41:40,821 INFO L500 BasicCegarLoop]: trace histogram [15, 14, 14, 6, 6, 6, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 02:41:40,840 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2022-03-18 02:41:41,029 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 [2022-03-18 02:41:41,029 INFO L403 AbstractCegarLoop]: === Iteration 18 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 02:41:41,030 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 02:41:41,030 INFO L85 PathProgramCache]: Analyzing trace with hash 541794983, now seen corresponding path program 5 times [2022-03-18 02:41:41,030 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-18 02:41:41,030 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [318470556] [2022-03-18 02:41:41,031 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-18 02:41:41,031 INFO L85 PathProgramCache]: Analyzing trace with hash 541794983, now seen corresponding path program 6 times [2022-03-18 02:41:41,031 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 02:41:41,031 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [115414261] [2022-03-18 02:41:41,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 02:41:41,031 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 02:41:41,039 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-03-18 02:41:41,039 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [908623427] [2022-03-18 02:41:41,039 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-18 02:41:41,040 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-18 02:41:41,040 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-18 02:41:41,041 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) [2022-03-18 02:41:41,050 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2022-03-18 02:41:41,119 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2022-03-18 02:41:41,119 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-18 02:41:41,121 INFO L263 TraceCheckSpWp]: Trace formula consists of 277 conjuncts, 82 conjunts are in the unsatisfiable core [2022-03-18 02:41:41,123 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-18 02:41:41,926 INFO L134 CoverageAnalysis]: Checked inductivity of 489 backedges. 99 proven. 86 refuted. 0 times theorem prover too weak. 304 trivial. 0 not checked. [2022-03-18 02:41:41,927 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-18 02:41:42,461 INFO L134 CoverageAnalysis]: Checked inductivity of 489 backedges. 130 proven. 29 refuted. 0 times theorem prover too weak. 330 trivial. 0 not checked. [2022-03-18 02:41:42,461 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 02:41:42,462 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [115414261] [2022-03-18 02:41:42,462 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-03-18 02:41:42,462 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [908623427] [2022-03-18 02:41:42,462 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [908623427] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-18 02:41:42,462 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-03-18 02:41:42,462 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 11] total 22 [2022-03-18 02:41:42,462 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-18 02:41:42,462 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [318470556] [2022-03-18 02:41:42,462 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [318470556] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 02:41:42,463 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 02:41:42,463 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-03-18 02:41:42,463 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [405864444] [2022-03-18 02:41:42,463 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-18 02:41:42,463 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-03-18 02:41:42,463 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-18 02:41:42,463 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-03-18 02:41:42,464 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=96, Invalid=366, Unknown=0, NotChecked=0, Total=462 [2022-03-18 02:41:42,464 INFO L87 Difference]: Start difference. First operand 194 states and 262 transitions. Second operand has 16 states, 15 states have (on average 2.1333333333333333) internal successors, (32), 13 states have internal predecessors, (32), 10 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (21), 9 states have call predecessors, (21), 9 states have call successors, (21) [2022-03-18 02:41:43,050 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 02:41:43,050 INFO L93 Difference]: Finished difference Result 265 states and 355 transitions. [2022-03-18 02:41:43,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-03-18 02:41:43,051 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 2.1333333333333333) internal successors, (32), 13 states have internal predecessors, (32), 10 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (21), 9 states have call predecessors, (21), 9 states have call successors, (21) Word has length 127 [2022-03-18 02:41:43,051 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 02:41:43,052 INFO L225 Difference]: With dead ends: 265 [2022-03-18 02:41:43,053 INFO L226 Difference]: Without dead ends: 263 [2022-03-18 02:41:43,053 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 256 GetRequests, 230 SyntacticMatches, 3 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 124 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=118, Invalid=482, Unknown=0, NotChecked=0, Total=600 [2022-03-18 02:41:43,054 INFO L912 BasicCegarLoop]: 50 mSDtfsCounter, 32 mSDsluCounter, 532 mSDsCounter, 0 mSdLazyCounter, 689 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 54 SdHoareTripleChecker+Valid, 582 SdHoareTripleChecker+Invalid, 724 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 689 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-18 02:41:43,054 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [54 Valid, 582 Invalid, 724 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 689 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-18 02:41:43,054 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 263 states. [2022-03-18 02:41:43,095 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 263 to 260. [2022-03-18 02:41:43,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 260 states, 139 states have (on average 1.1366906474820144) internal successors, (158), 140 states have internal predecessors, (158), 97 states have call successors, (97), 24 states have call predecessors, (97), 23 states have return successors, (95), 95 states have call predecessors, (95), 95 states have call successors, (95) [2022-03-18 02:41:43,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 260 states to 260 states and 350 transitions. [2022-03-18 02:41:43,097 INFO L78 Accepts]: Start accepts. Automaton has 260 states and 350 transitions. Word has length 127 [2022-03-18 02:41:43,097 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 02:41:43,098 INFO L478 AbstractCegarLoop]: Abstraction has 260 states and 350 transitions. [2022-03-18 02:41:43,098 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 2.1333333333333333) internal successors, (32), 13 states have internal predecessors, (32), 10 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (21), 9 states have call predecessors, (21), 9 states have call successors, (21) [2022-03-18 02:41:43,098 INFO L276 IsEmpty]: Start isEmpty. Operand 260 states and 350 transitions. [2022-03-18 02:41:43,099 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2022-03-18 02:41:43,099 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 02:41:43,099 INFO L500 BasicCegarLoop]: trace histogram [16, 15, 15, 6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 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] [2022-03-18 02:41:43,118 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2022-03-18 02:41:43,307 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 [2022-03-18 02:41:43,308 INFO L403 AbstractCegarLoop]: === Iteration 19 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 02:41:43,308 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 02:41:43,308 INFO L85 PathProgramCache]: Analyzing trace with hash -2138166692, now seen corresponding path program 7 times [2022-03-18 02:41:43,308 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-18 02:41:43,308 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [185873653] [2022-03-18 02:41:43,308 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-18 02:41:43,308 INFO L85 PathProgramCache]: Analyzing trace with hash -2138166692, now seen corresponding path program 8 times [2022-03-18 02:41:43,308 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 02:41:43,308 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [467768210] [2022-03-18 02:41:43,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 02:41:43,309 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 02:41:43,316 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-03-18 02:41:43,317 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [790199542] [2022-03-18 02:41:43,317 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-18 02:41:43,317 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-18 02:41:43,317 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-18 02:41:43,318 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) [2022-03-18 02:41:43,319 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2022-03-18 02:41:43,387 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-18 02:41:43,387 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-18 02:41:43,388 INFO L263 TraceCheckSpWp]: Trace formula consists of 306 conjuncts, 71 conjunts are in the unsatisfiable core [2022-03-18 02:41:43,391 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-18 02:41:44,627 INFO L134 CoverageAnalysis]: Checked inductivity of 545 backedges. 142 proven. 88 refuted. 0 times theorem prover too weak. 315 trivial. 0 not checked. [2022-03-18 02:41:44,627 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-18 02:41:45,896 WARN L907 QuantifierPusher]: no eliminatee completely removed, nonetheless the elimination was considered successful [2022-03-18 02:41:47,128 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 02:41:47,128 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [467768210] [2022-03-18 02:41:47,128 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-03-18 02:41:47,129 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [790199542] [2022-03-18 02:41:47,129 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [790199542] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-18 02:41:47,129 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-03-18 02:41:47,129 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2022-03-18 02:41:47,129 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-18 02:41:47,129 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [185873653] [2022-03-18 02:41:47,129 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [185873653] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 02:41:47,129 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 02:41:47,129 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-03-18 02:41:47,129 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1003704003] [2022-03-18 02:41:47,129 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-18 02:41:47,130 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-03-18 02:41:47,130 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-18 02:41:47,130 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-03-18 02:41:47,130 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=114, Invalid=438, Unknown=0, NotChecked=0, Total=552 [2022-03-18 02:41:47,130 INFO L87 Difference]: Start difference. First operand 260 states and 350 transitions. Second operand has 16 states, 16 states have (on average 2.0) internal successors, (32), 13 states have internal predecessors, (32), 8 states have call successors, (24), 2 states have call predecessors, (24), 3 states have return successors, (22), 7 states have call predecessors, (22), 8 states have call successors, (22) [2022-03-18 02:41:51,511 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 02:41:51,511 INFO L93 Difference]: Finished difference Result 268 states and 357 transitions. [2022-03-18 02:41:51,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-03-18 02:41:51,513 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.0) internal successors, (32), 13 states have internal predecessors, (32), 8 states have call successors, (24), 2 states have call predecessors, (24), 3 states have return successors, (22), 7 states have call predecessors, (22), 8 states have call successors, (22) Word has length 129 [2022-03-18 02:41:51,513 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 02:41:51,515 INFO L225 Difference]: With dead ends: 268 [2022-03-18 02:41:51,515 INFO L226 Difference]: Without dead ends: 266 [2022-03-18 02:41:51,515 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 173 GetRequests, 141 SyntacticMatches, 5 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 180 ImplicationChecksByTransitivity, 5.4s TimeCoverageRelationStatistics Valid=159, Invalid=652, Unknown=1, NotChecked=0, Total=812 [2022-03-18 02:41:51,516 INFO L912 BasicCegarLoop]: 43 mSDtfsCounter, 38 mSDsluCounter, 385 mSDsCounter, 0 mSdLazyCounter, 667 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 428 SdHoareTripleChecker+Invalid, 716 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 667 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-03-18 02:41:51,516 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [48 Valid, 428 Invalid, 716 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 667 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-03-18 02:41:51,517 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 266 states. [2022-03-18 02:41:51,566 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 266 to 264. [2022-03-18 02:41:51,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 264 states, 142 states have (on average 1.1338028169014085) internal successors, (161), 143 states have internal predecessors, (161), 97 states have call successors, (97), 25 states have call predecessors, (97), 24 states have return successors, (95), 95 states have call predecessors, (95), 95 states have call successors, (95) [2022-03-18 02:41:51,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 264 states to 264 states and 353 transitions. [2022-03-18 02:41:51,568 INFO L78 Accepts]: Start accepts. Automaton has 264 states and 353 transitions. Word has length 129 [2022-03-18 02:41:51,569 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 02:41:51,569 INFO L478 AbstractCegarLoop]: Abstraction has 264 states and 353 transitions. [2022-03-18 02:41:51,569 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 2.0) internal successors, (32), 13 states have internal predecessors, (32), 8 states have call successors, (24), 2 states have call predecessors, (24), 3 states have return successors, (22), 7 states have call predecessors, (22), 8 states have call successors, (22) [2022-03-18 02:41:51,569 INFO L276 IsEmpty]: Start isEmpty. Operand 264 states and 353 transitions. [2022-03-18 02:41:51,570 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2022-03-18 02:41:51,570 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 02:41:51,570 INFO L500 BasicCegarLoop]: trace histogram [16, 15, 15, 6, 6, 6, 4, 4, 4, 4, 4, 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, 1] [2022-03-18 02:41:51,587 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2022-03-18 02:41:51,771 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 [2022-03-18 02:41:51,771 INFO L403 AbstractCegarLoop]: === Iteration 20 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 02:41:51,771 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 02:41:51,771 INFO L85 PathProgramCache]: Analyzing trace with hash -1899875875, now seen corresponding path program 9 times [2022-03-18 02:41:51,771 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-18 02:41:51,771 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1801680896] [2022-03-18 02:41:51,772 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-18 02:41:51,772 INFO L85 PathProgramCache]: Analyzing trace with hash -1899875875, now seen corresponding path program 10 times [2022-03-18 02:41:51,772 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 02:41:51,772 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019913674] [2022-03-18 02:41:51,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 02:41:51,772 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 02:41:51,784 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-03-18 02:41:51,784 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1692691544] [2022-03-18 02:41:51,784 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-18 02:41:51,784 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-18 02:41:51,784 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-18 02:41:51,785 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) [2022-03-18 02:41:51,790 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2022-03-18 02:41:51,847 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-18 02:41:51,847 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-18 02:41:51,849 INFO L263 TraceCheckSpWp]: Trace formula consists of 275 conjuncts, 79 conjunts are in the unsatisfiable core [2022-03-18 02:41:51,851 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-18 02:41:53,324 INFO L134 CoverageAnalysis]: Checked inductivity of 550 backedges. 103 proven. 117 refuted. 0 times theorem prover too weak. 330 trivial. 0 not checked. [2022-03-18 02:41:53,324 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-18 02:42:42,444 INFO L134 CoverageAnalysis]: Checked inductivity of 550 backedges. 112 proven. 88 refuted. 2 times theorem prover too weak. 348 trivial. 0 not checked. [2022-03-18 02:42:42,445 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 02:42:42,445 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019913674] [2022-03-18 02:42:42,445 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-03-18 02:42:42,445 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1692691544] [2022-03-18 02:42:42,445 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1692691544] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-18 02:42:42,445 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-03-18 02:42:42,445 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 18] total 29 [2022-03-18 02:42:42,446 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-18 02:42:42,446 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1801680896] [2022-03-18 02:42:42,446 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1801680896] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 02:42:42,446 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 02:42:42,446 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-03-18 02:42:42,446 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [333706729] [2022-03-18 02:42:42,446 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-18 02:42:42,446 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-03-18 02:42:42,446 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-18 02:42:42,447 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-03-18 02:42:42,447 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=179, Invalid=629, Unknown=4, NotChecked=0, Total=812 [2022-03-18 02:42:42,447 INFO L87 Difference]: Start difference. First operand 264 states and 353 transitions. Second operand has 16 states, 16 states have (on average 2.0) internal successors, (32), 13 states have internal predecessors, (32), 7 states have call successors, (24), 2 states have call predecessors, (24), 2 states have return successors, (22), 8 states have call predecessors, (22), 7 states have call successors, (22) [2022-03-18 02:42:45,376 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 02:42:45,376 INFO L93 Difference]: Finished difference Result 281 states and 367 transitions. [2022-03-18 02:42:45,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-03-18 02:42:45,377 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.0) internal successors, (32), 13 states have internal predecessors, (32), 7 states have call successors, (24), 2 states have call predecessors, (24), 2 states have return successors, (22), 8 states have call predecessors, (22), 7 states have call successors, (22) Word has length 132 [2022-03-18 02:42:45,377 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 02:42:45,379 INFO L225 Difference]: With dead ends: 281 [2022-03-18 02:42:45,379 INFO L226 Difference]: Without dead ends: 279 [2022-03-18 02:42:45,380 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 269 GetRequests, 232 SyntacticMatches, 4 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 242 ImplicationChecksByTransitivity, 24.2s TimeCoverageRelationStatistics Valid=258, Invalid=928, Unknown=4, NotChecked=0, Total=1190 [2022-03-18 02:42:45,381 INFO L912 BasicCegarLoop]: 50 mSDtfsCounter, 30 mSDsluCounter, 417 mSDsCounter, 0 mSdLazyCounter, 512 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 467 SdHoareTripleChecker+Invalid, 562 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 512 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-18 02:42:45,381 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [42 Valid, 467 Invalid, 562 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 512 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-18 02:42:45,386 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 279 states. [2022-03-18 02:42:45,437 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 279 to 243. [2022-03-18 02:42:45,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 243 states, 133 states have (on average 1.1278195488721805) internal successors, (150), 134 states have internal predecessors, (150), 85 states have call successors, (85), 25 states have call predecessors, (85), 24 states have return successors, (83), 83 states have call predecessors, (83), 83 states have call successors, (83) [2022-03-18 02:42:45,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 243 states to 243 states and 318 transitions. [2022-03-18 02:42:45,439 INFO L78 Accepts]: Start accepts. Automaton has 243 states and 318 transitions. Word has length 132 [2022-03-18 02:42:45,440 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 02:42:45,440 INFO L478 AbstractCegarLoop]: Abstraction has 243 states and 318 transitions. [2022-03-18 02:42:45,440 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 2.0) internal successors, (32), 13 states have internal predecessors, (32), 7 states have call successors, (24), 2 states have call predecessors, (24), 2 states have return successors, (22), 8 states have call predecessors, (22), 7 states have call successors, (22) [2022-03-18 02:42:45,440 INFO L276 IsEmpty]: Start isEmpty. Operand 243 states and 318 transitions. [2022-03-18 02:42:45,441 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2022-03-18 02:42:45,442 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 02:42:45,442 INFO L500 BasicCegarLoop]: trace histogram [17, 16, 16, 6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 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] [2022-03-18 02:42:45,468 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2022-03-18 02:42:45,655 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 [2022-03-18 02:42:45,655 INFO L403 AbstractCegarLoop]: === Iteration 21 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 02:42:45,656 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 02:42:45,656 INFO L85 PathProgramCache]: Analyzing trace with hash 1068997356, now seen corresponding path program 7 times [2022-03-18 02:42:45,656 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-18 02:42:45,656 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [2009556563] [2022-03-18 02:42:45,656 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-18 02:42:45,656 INFO L85 PathProgramCache]: Analyzing trace with hash 1068997356, now seen corresponding path program 8 times [2022-03-18 02:42:45,656 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 02:42:45,656 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [544949149] [2022-03-18 02:42:45,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 02:42:45,656 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 02:42:45,663 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-03-18 02:42:45,663 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1289274039] [2022-03-18 02:42:45,664 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-18 02:42:45,664 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-18 02:42:45,664 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-18 02:42:45,665 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) [2022-03-18 02:42:45,666 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2022-03-18 02:42:45,733 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-18 02:42:45,733 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-18 02:42:45,735 INFO L263 TraceCheckSpWp]: Trace formula consists of 317 conjuncts, 55 conjunts are in the unsatisfiable core [2022-03-18 02:42:45,738 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-18 02:42:46,541 INFO L134 CoverageAnalysis]: Checked inductivity of 610 backedges. 102 proven. 52 refuted. 0 times theorem prover too weak. 456 trivial. 0 not checked. [2022-03-18 02:42:46,541 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-18 02:42:48,951 INFO L134 CoverageAnalysis]: Checked inductivity of 610 backedges. 102 proven. 52 refuted. 0 times theorem prover too weak. 456 trivial. 0 not checked. [2022-03-18 02:42:48,952 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 02:42:48,952 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [544949149] [2022-03-18 02:42:48,952 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-03-18 02:42:48,952 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1289274039] [2022-03-18 02:42:48,952 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1289274039] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-18 02:42:48,952 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-03-18 02:42:48,952 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 16] total 26 [2022-03-18 02:42:48,953 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-18 02:42:48,953 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [2009556563] [2022-03-18 02:42:48,953 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [2009556563] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 02:42:48,953 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 02:42:48,953 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2022-03-18 02:42:48,953 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [505339260] [2022-03-18 02:42:48,953 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-18 02:42:48,954 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-03-18 02:42:48,954 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-18 02:42:48,954 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-03-18 02:42:48,954 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=131, Invalid=519, Unknown=0, NotChecked=0, Total=650 [2022-03-18 02:42:48,954 INFO L87 Difference]: Start difference. First operand 243 states and 318 transitions. Second operand has 15 states, 14 states have (on average 2.142857142857143) internal successors, (30), 13 states have internal predecessors, (30), 8 states have call successors, (25), 2 states have call predecessors, (25), 2 states have return successors, (23), 7 states have call predecessors, (23), 7 states have call successors, (23) [2022-03-18 02:42:50,169 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 02:42:50,169 INFO L93 Difference]: Finished difference Result 288 states and 380 transitions. [2022-03-18 02:42:50,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-03-18 02:42:50,169 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 2.142857142857143) internal successors, (30), 13 states have internal predecessors, (30), 8 states have call successors, (25), 2 states have call predecessors, (25), 2 states have return successors, (23), 7 states have call predecessors, (23), 7 states have call successors, (23) Word has length 135 [2022-03-18 02:42:50,170 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 02:42:50,171 INFO L225 Difference]: With dead ends: 288 [2022-03-18 02:42:50,171 INFO L226 Difference]: Without dead ends: 285 [2022-03-18 02:42:50,172 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 273 GetRequests, 243 SyntacticMatches, 2 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 189 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=172, Invalid=698, Unknown=0, NotChecked=0, Total=870 [2022-03-18 02:42:50,172 INFO L912 BasicCegarLoop]: 55 mSDtfsCounter, 30 mSDsluCounter, 552 mSDsCounter, 0 mSdLazyCounter, 652 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 607 SdHoareTripleChecker+Invalid, 702 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 652 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-03-18 02:42:50,172 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [41 Valid, 607 Invalid, 702 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 652 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-03-18 02:42:50,173 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 285 states. [2022-03-18 02:42:50,228 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 285 to 282. [2022-03-18 02:42:50,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 282 states, 153 states have (on average 1.130718954248366) internal successors, (173), 154 states have internal predecessors, (173), 101 states have call successors, (101), 28 states have call predecessors, (101), 27 states have return successors, (99), 99 states have call predecessors, (99), 99 states have call successors, (99) [2022-03-18 02:42:50,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 282 states to 282 states and 373 transitions. [2022-03-18 02:42:50,231 INFO L78 Accepts]: Start accepts. Automaton has 282 states and 373 transitions. Word has length 135 [2022-03-18 02:42:50,231 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 02:42:50,231 INFO L478 AbstractCegarLoop]: Abstraction has 282 states and 373 transitions. [2022-03-18 02:42:50,231 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 2.142857142857143) internal successors, (30), 13 states have internal predecessors, (30), 8 states have call successors, (25), 2 states have call predecessors, (25), 2 states have return successors, (23), 7 states have call predecessors, (23), 7 states have call successors, (23) [2022-03-18 02:42:50,231 INFO L276 IsEmpty]: Start isEmpty. Operand 282 states and 373 transitions. [2022-03-18 02:42:50,232 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2022-03-18 02:42:50,232 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 02:42:50,233 INFO L500 BasicCegarLoop]: trace histogram [17, 16, 16, 6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 02:42:50,258 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2022-03-18 02:42:50,452 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 [2022-03-18 02:42:50,452 INFO L403 AbstractCegarLoop]: === Iteration 22 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 02:42:50,452 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 02:42:50,452 INFO L85 PathProgramCache]: Analyzing trace with hash -896647763, now seen corresponding path program 9 times [2022-03-18 02:42:50,452 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-18 02:42:50,452 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [2038638964] [2022-03-18 02:42:50,453 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-18 02:42:50,453 INFO L85 PathProgramCache]: Analyzing trace with hash -896647763, now seen corresponding path program 10 times [2022-03-18 02:42:50,453 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 02:42:50,453 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [462591076] [2022-03-18 02:42:50,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 02:42:50,453 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 02:42:50,460 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-03-18 02:42:50,461 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1726335553] [2022-03-18 02:42:50,461 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-18 02:42:50,461 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-18 02:42:50,461 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-18 02:42:50,462 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) [2022-03-18 02:42:50,464 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2022-03-18 02:42:50,526 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-18 02:42:50,526 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-18 02:42:50,528 INFO L263 TraceCheckSpWp]: Trace formula consists of 286 conjuncts, 87 conjunts are in the unsatisfiable core [2022-03-18 02:42:50,529 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-18 02:42:51,977 WARN L907 QuantifierPusher]: no eliminatee completely removed, nonetheless the elimination was considered successful [2022-03-18 02:42:52,553 WARN L907 QuantifierPusher]: no eliminatee completely removed, nonetheless the elimination was considered successful [2022-03-18 02:42:52,556 WARN L907 QuantifierPusher]: no eliminatee completely removed, nonetheless the elimination was considered successful [2022-03-18 02:42:52,559 WARN L907 QuantifierPusher]: no eliminatee completely removed, nonetheless the elimination was considered successful [2022-03-18 02:42:52,571 WARN L907 QuantifierPusher]: no eliminatee completely removed, nonetheless the elimination was considered successful [2022-03-18 02:42:52,577 WARN L907 QuantifierPusher]: no eliminatee completely removed, nonetheless the elimination was considered successful [2022-03-18 02:42:52,591 WARN L907 QuantifierPusher]: no eliminatee completely removed, nonetheless the elimination was considered successful [2022-03-18 02:42:52,596 WARN L907 QuantifierPusher]: no eliminatee completely removed, nonetheless the elimination was considered successful [2022-03-18 02:42:52,599 WARN L907 QuantifierPusher]: no eliminatee completely removed, nonetheless the elimination was considered successful [2022-03-18 02:42:52,616 WARN L907 QuantifierPusher]: no eliminatee completely removed, nonetheless the elimination was considered successful [2022-03-18 02:43:15,559 INFO L134 CoverageAnalysis]: Checked inductivity of 615 backedges. 144 proven. 111 refuted. 0 times theorem prover too weak. 360 trivial. 0 not checked. [2022-03-18 02:43:15,559 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-18 02:43:22,629 INFO L134 CoverageAnalysis]: Checked inductivity of 615 backedges. 169 proven. 21 refuted. 0 times theorem prover too weak. 425 trivial. 0 not checked. [2022-03-18 02:43:22,630 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 02:43:22,630 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [462591076] [2022-03-18 02:43:22,630 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-03-18 02:43:22,630 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1726335553] [2022-03-18 02:43:22,630 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1726335553] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-18 02:43:22,630 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-03-18 02:43:22,630 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 15] total 33 [2022-03-18 02:43:22,630 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-18 02:43:22,630 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [2038638964] [2022-03-18 02:43:22,630 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [2038638964] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 02:43:22,630 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 02:43:22,630 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [23] imperfect sequences [] total 23 [2022-03-18 02:43:22,630 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1483877107] [2022-03-18 02:43:22,631 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-18 02:43:22,631 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-03-18 02:43:22,631 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-18 02:43:22,631 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-03-18 02:43:22,632 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=185, Invalid=871, Unknown=0, NotChecked=0, Total=1056 [2022-03-18 02:43:22,632 INFO L87 Difference]: Start difference. First operand 282 states and 373 transitions. Second operand has 23 states, 20 states have (on average 1.8) internal successors, (36), 17 states have internal predecessors, (36), 10 states have call successors, (25), 2 states have call predecessors, (25), 3 states have return successors, (23), 11 states have call predecessors, (23), 9 states have call successors, (23) [2022-03-18 02:43:31,064 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 02:43:31,065 INFO L93 Difference]: Finished difference Result 331 states and 438 transitions. [2022-03-18 02:43:31,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-03-18 02:43:31,066 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 20 states have (on average 1.8) internal successors, (36), 17 states have internal predecessors, (36), 10 states have call successors, (25), 2 states have call predecessors, (25), 3 states have return successors, (23), 11 states have call predecessors, (23), 9 states have call successors, (23) Word has length 138 [2022-03-18 02:43:31,066 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 02:43:31,068 INFO L225 Difference]: With dead ends: 331 [2022-03-18 02:43:31,068 INFO L226 Difference]: Without dead ends: 328 [2022-03-18 02:43:31,069 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 284 GetRequests, 243 SyntacticMatches, 1 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 416 ImplicationChecksByTransitivity, 10.2s TimeCoverageRelationStatistics Valid=294, Invalid=1428, Unknown=0, NotChecked=0, Total=1722 [2022-03-18 02:43:31,069 INFO L912 BasicCegarLoop]: 46 mSDtfsCounter, 61 mSDsluCounter, 305 mSDsCounter, 0 mSdLazyCounter, 973 mSolverCounterSat, 77 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 79 SdHoareTripleChecker+Valid, 351 SdHoareTripleChecker+Invalid, 1050 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 77 IncrementalHoareTripleChecker+Valid, 973 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.5s IncrementalHoareTripleChecker+Time [2022-03-18 02:43:31,070 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [79 Valid, 351 Invalid, 1050 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [77 Valid, 973 Invalid, 0 Unknown, 0 Unchecked, 6.5s Time] [2022-03-18 02:43:31,070 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 328 states. [2022-03-18 02:43:31,143 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 328 to 325. [2022-03-18 02:43:31,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 325 states, 176 states have (on average 1.1306818181818181) internal successors, (199), 177 states have internal predecessors, (199), 117 states have call successors, (117), 32 states have call predecessors, (117), 31 states have return successors, (115), 115 states have call predecessors, (115), 115 states have call successors, (115) [2022-03-18 02:43:31,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 325 states to 325 states and 431 transitions. [2022-03-18 02:43:31,146 INFO L78 Accepts]: Start accepts. Automaton has 325 states and 431 transitions. Word has length 138 [2022-03-18 02:43:31,146 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 02:43:31,146 INFO L478 AbstractCegarLoop]: Abstraction has 325 states and 431 transitions. [2022-03-18 02:43:31,146 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 20 states have (on average 1.8) internal successors, (36), 17 states have internal predecessors, (36), 10 states have call successors, (25), 2 states have call predecessors, (25), 3 states have return successors, (23), 11 states have call predecessors, (23), 9 states have call successors, (23) [2022-03-18 02:43:31,146 INFO L276 IsEmpty]: Start isEmpty. Operand 325 states and 431 transitions. [2022-03-18 02:43:31,147 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2022-03-18 02:43:31,147 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 02:43:31,148 INFO L500 BasicCegarLoop]: trace histogram [19, 18, 18, 6, 6, 6, 5, 5, 5, 5, 5, 5, 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] [2022-03-18 02:43:31,166 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2022-03-18 02:43:31,355 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 [2022-03-18 02:43:31,356 INFO L403 AbstractCegarLoop]: === Iteration 23 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 02:43:31,356 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 02:43:31,356 INFO L85 PathProgramCache]: Analyzing trace with hash -604751514, now seen corresponding path program 11 times [2022-03-18 02:43:31,356 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-18 02:43:31,356 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1640735093] [2022-03-18 02:43:31,356 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-18 02:43:31,356 INFO L85 PathProgramCache]: Analyzing trace with hash -604751514, now seen corresponding path program 12 times [2022-03-18 02:43:31,357 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 02:43:31,357 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1534421704] [2022-03-18 02:43:31,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 02:43:31,357 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 02:43:31,364 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-03-18 02:43:31,364 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1587190072] [2022-03-18 02:43:31,365 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-18 02:43:31,365 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-18 02:43:31,365 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-18 02:43:31,366 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) [2022-03-18 02:43:31,367 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2022-03-18 02:43:31,442 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2022-03-18 02:43:31,442 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-18 02:43:31,443 INFO L263 TraceCheckSpWp]: Trace formula consists of 255 conjuncts, 61 conjunts are in the unsatisfiable core [2022-03-18 02:43:31,452 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-18 02:43:31,958 INFO L134 CoverageAnalysis]: Checked inductivity of 767 backedges. 109 proven. 76 refuted. 0 times theorem prover too weak. 582 trivial. 0 not checked. [2022-03-18 02:43:31,958 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-18 02:43:32,411 INFO L134 CoverageAnalysis]: Checked inductivity of 767 backedges. 149 proven. 31 refuted. 0 times theorem prover too weak. 587 trivial. 0 not checked. [2022-03-18 02:43:32,412 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 02:43:32,412 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1534421704] [2022-03-18 02:43:32,412 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-03-18 02:43:32,412 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1587190072] [2022-03-18 02:43:32,412 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1587190072] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-18 02:43:32,412 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-03-18 02:43:32,412 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 10] total 17 [2022-03-18 02:43:32,412 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-18 02:43:32,412 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1640735093] [2022-03-18 02:43:32,412 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1640735093] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 02:43:32,412 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 02:43:32,412 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-03-18 02:43:32,412 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1856527146] [2022-03-18 02:43:32,413 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-18 02:43:32,413 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-03-18 02:43:32,413 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-18 02:43:32,413 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-03-18 02:43:32,413 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=224, Unknown=0, NotChecked=0, Total=272 [2022-03-18 02:43:32,414 INFO L87 Difference]: Start difference. First operand 325 states and 431 transitions. Second operand has 13 states, 12 states have (on average 2.75) internal successors, (33), 10 states have internal predecessors, (33), 7 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (21), 7 states have call predecessors, (21), 6 states have call successors, (21) [2022-03-18 02:43:32,988 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 02:43:32,988 INFO L93 Difference]: Finished difference Result 364 states and 481 transitions. [2022-03-18 02:43:32,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-03-18 02:43:32,989 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 2.75) internal successors, (33), 10 states have internal predecessors, (33), 7 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (21), 7 states have call predecessors, (21), 6 states have call successors, (21) Word has length 149 [2022-03-18 02:43:32,989 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 02:43:32,991 INFO L225 Difference]: With dead ends: 364 [2022-03-18 02:43:32,991 INFO L226 Difference]: Without dead ends: 362 [2022-03-18 02:43:32,991 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 303 GetRequests, 279 SyntacticMatches, 3 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=90, Invalid=416, Unknown=0, NotChecked=0, Total=506 [2022-03-18 02:43:32,991 INFO L912 BasicCegarLoop]: 54 mSDtfsCounter, 39 mSDsluCounter, 390 mSDsCounter, 0 mSdLazyCounter, 422 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 444 SdHoareTripleChecker+Invalid, 483 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 422 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-18 02:43:32,992 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [45 Valid, 444 Invalid, 483 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [61 Valid, 422 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-18 02:43:32,992 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 362 states. [2022-03-18 02:43:33,076 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 362 to 358. [2022-03-18 02:43:33,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 358 states, 194 states have (on average 1.1288659793814433) internal successors, (219), 195 states have internal predecessors, (219), 129 states have call successors, (129), 35 states have call predecessors, (129), 34 states have return successors, (127), 127 states have call predecessors, (127), 127 states have call successors, (127) [2022-03-18 02:43:33,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 358 states to 358 states and 475 transitions. [2022-03-18 02:43:33,078 INFO L78 Accepts]: Start accepts. Automaton has 358 states and 475 transitions. Word has length 149 [2022-03-18 02:43:33,079 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 02:43:33,079 INFO L478 AbstractCegarLoop]: Abstraction has 358 states and 475 transitions. [2022-03-18 02:43:33,079 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 2.75) internal successors, (33), 10 states have internal predecessors, (33), 7 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (21), 7 states have call predecessors, (21), 6 states have call successors, (21) [2022-03-18 02:43:33,079 INFO L276 IsEmpty]: Start isEmpty. Operand 358 states and 475 transitions. [2022-03-18 02:43:33,080 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2022-03-18 02:43:33,080 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 02:43:33,080 INFO L500 BasicCegarLoop]: trace histogram [20, 19, 19, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 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] [2022-03-18 02:43:33,104 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2022-03-18 02:43:33,303 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 [2022-03-18 02:43:33,303 INFO L403 AbstractCegarLoop]: === Iteration 24 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 02:43:33,304 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 02:43:33,304 INFO L85 PathProgramCache]: Analyzing trace with hash -162755237, now seen corresponding path program 13 times [2022-03-18 02:43:33,304 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-18 02:43:33,304 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [706042662] [2022-03-18 02:43:33,304 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-18 02:43:33,304 INFO L85 PathProgramCache]: Analyzing trace with hash -162755237, now seen corresponding path program 14 times [2022-03-18 02:43:33,304 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 02:43:33,305 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [301625124] [2022-03-18 02:43:33,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 02:43:33,305 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 02:43:33,313 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-03-18 02:43:33,313 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1134010910] [2022-03-18 02:43:33,314 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-18 02:43:33,314 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-18 02:43:33,314 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-18 02:43:33,316 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) [2022-03-18 02:43:33,317 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2022-03-18 02:43:33,394 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-18 02:43:33,395 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-18 02:43:33,396 INFO L263 TraceCheckSpWp]: Trace formula consists of 348 conjuncts, 54 conjunts are in the unsatisfiable core [2022-03-18 02:43:33,399 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-18 02:43:34,267 INFO L134 CoverageAnalysis]: Checked inductivity of 840 backedges. 131 proven. 109 refuted. 0 times theorem prover too weak. 600 trivial. 0 not checked. [2022-03-18 02:43:34,267 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-18 02:43:35,194 WARN L907 QuantifierPusher]: no eliminatee completely removed, nonetheless the elimination was considered successful [2022-03-18 02:43:35,522 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 02:43:35,523 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [301625124] [2022-03-18 02:43:35,523 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-03-18 02:43:35,523 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1134010910] [2022-03-18 02:43:35,523 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1134010910] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-18 02:43:35,523 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-03-18 02:43:35,523 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2022-03-18 02:43:35,523 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-18 02:43:35,523 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [706042662] [2022-03-18 02:43:35,523 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [706042662] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 02:43:35,523 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 02:43:35,523 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-03-18 02:43:35,523 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [268983456] [2022-03-18 02:43:35,523 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-18 02:43:35,524 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-03-18 02:43:35,524 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-18 02:43:35,524 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-03-18 02:43:35,524 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=289, Unknown=0, NotChecked=0, Total=342 [2022-03-18 02:43:35,524 INFO L87 Difference]: Start difference. First operand 358 states and 475 transitions. Second operand has 14 states, 13 states have (on average 2.3846153846153846) internal successors, (31), 12 states have internal predecessors, (31), 8 states have call successors, (28), 2 states have call predecessors, (28), 2 states have return successors, (26), 9 states have call predecessors, (26), 7 states have call successors, (26) [2022-03-18 02:43:36,378 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 02:43:36,378 INFO L93 Difference]: Finished difference Result 367 states and 483 transitions. [2022-03-18 02:43:36,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-03-18 02:43:36,379 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 2.3846153846153846) internal successors, (31), 12 states have internal predecessors, (31), 8 states have call successors, (28), 2 states have call predecessors, (28), 2 states have return successors, (26), 9 states have call predecessors, (26), 7 states have call successors, (26) Word has length 151 [2022-03-18 02:43:36,379 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 02:43:36,380 INFO L225 Difference]: With dead ends: 367 [2022-03-18 02:43:36,380 INFO L226 Difference]: Without dead ends: 365 [2022-03-18 02:43:36,381 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 182 GetRequests, 157 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=96, Invalid=554, Unknown=0, NotChecked=0, Total=650 [2022-03-18 02:43:36,381 INFO L912 BasicCegarLoop]: 60 mSDtfsCounter, 28 mSDsluCounter, 579 mSDsCounter, 0 mSdLazyCounter, 700 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 639 SdHoareTripleChecker+Invalid, 734 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 700 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-03-18 02:43:36,381 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [36 Valid, 639 Invalid, 734 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 700 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-03-18 02:43:36,382 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 365 states. [2022-03-18 02:43:36,451 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 365 to 329. [2022-03-18 02:43:36,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 329 states, 179 states have (on average 1.1284916201117319) internal successors, (202), 180 states have internal predecessors, (202), 117 states have call successors, (117), 33 states have call predecessors, (117), 32 states have return successors, (115), 115 states have call predecessors, (115), 115 states have call successors, (115) [2022-03-18 02:43:36,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 329 states to 329 states and 434 transitions. [2022-03-18 02:43:36,453 INFO L78 Accepts]: Start accepts. Automaton has 329 states and 434 transitions. Word has length 151 [2022-03-18 02:43:36,454 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 02:43:36,454 INFO L478 AbstractCegarLoop]: Abstraction has 329 states and 434 transitions. [2022-03-18 02:43:36,454 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 2.3846153846153846) internal successors, (31), 12 states have internal predecessors, (31), 8 states have call successors, (28), 2 states have call predecessors, (28), 2 states have return successors, (26), 9 states have call predecessors, (26), 7 states have call successors, (26) [2022-03-18 02:43:36,454 INFO L276 IsEmpty]: Start isEmpty. Operand 329 states and 434 transitions. [2022-03-18 02:43:36,455 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2022-03-18 02:43:36,455 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 02:43:36,455 INFO L500 BasicCegarLoop]: trace histogram [20, 19, 19, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 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] [2022-03-18 02:43:36,477 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2022-03-18 02:43:36,671 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 [2022-03-18 02:43:36,671 INFO L403 AbstractCegarLoop]: === Iteration 25 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 02:43:36,671 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 02:43:36,671 INFO L85 PathProgramCache]: Analyzing trace with hash 1672449564, now seen corresponding path program 15 times [2022-03-18 02:43:36,671 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-18 02:43:36,671 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1917279924] [2022-03-18 02:43:36,672 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-18 02:43:36,672 INFO L85 PathProgramCache]: Analyzing trace with hash 1672449564, now seen corresponding path program 16 times [2022-03-18 02:43:36,672 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 02:43:36,672 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1725352801] [2022-03-18 02:43:36,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 02:43:36,672 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 02:43:36,679 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-03-18 02:43:36,679 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1186396366] [2022-03-18 02:43:36,679 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-18 02:43:36,680 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-18 02:43:36,680 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-18 02:43:36,681 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) [2022-03-18 02:43:36,688 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2022-03-18 02:43:36,757 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-18 02:43:36,757 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-18 02:43:36,759 INFO L263 TraceCheckSpWp]: Trace formula consists of 317 conjuncts, 111 conjunts are in the unsatisfiable core [2022-03-18 02:43:36,761 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-18 02:43:38,839 INFO L134 CoverageAnalysis]: Checked inductivity of 845 backedges. 161 proven. 225 refuted. 0 times theorem prover too weak. 459 trivial. 0 not checked. [2022-03-18 02:43:38,840 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-18 02:43:45,010 WARN L907 QuantifierPusher]: no eliminatee completely removed, nonetheless the elimination was considered successful [2022-03-18 02:45:50,207 WARN L855 $PredicateComparison]: unable to prove that (forall ((v_main_~k~0_BEFORE_CALL_221 Int) (v_main_~yy~0_BEFORE_CALL_154 Int) (v_main_~s~0_BEFORE_CALL_349 Int) (v_main_~p~0_BEFORE_CALL_284 Int) (v_main_~q~0_BEFORE_CALL_346 Int) (v_main_~xy~0_BEFORE_CALL_182 Int) (v_main_~y~0_BEFORE_CALL_371 Int) (v_main_~x~0_BEFORE_CALL_363 Int) (v_main_~r~0_BEFORE_CALL_304 Int)) (let ((.cse7 (* v_main_~x~0_BEFORE_CALL_363 v_main_~q~0_BEFORE_CALL_346)) (.cse8 (* v_main_~y~0_BEFORE_CALL_371 v_main_~s~0_BEFORE_CALL_349)) (.cse9 (+ (* (- 1) v_main_~k~0_BEFORE_CALL_221 v_main_~q~0_BEFORE_CALL_346) v_main_~p~0_BEFORE_CALL_284)) (.cse10 (+ (* (- 1) (* v_main_~k~0_BEFORE_CALL_221 v_main_~s~0_BEFORE_CALL_349)) v_main_~r~0_BEFORE_CALL_304)) (.cse4 (* v_main_~p~0_BEFORE_CALL_284 v_main_~x~0_BEFORE_CALL_363)) (.cse5 (* v_main_~y~0_BEFORE_CALL_371 v_main_~r~0_BEFORE_CALL_304))) (let ((.cse3 (+ .cse4 .cse5)) (.cse1 (* .cse10 v_main_~y~0_BEFORE_CALL_371)) (.cse2 (* .cse9 v_main_~x~0_BEFORE_CALL_363)) (.cse6 (+ .cse7 .cse8))) (or (let ((.cse0 (div (+ .cse4 (* .cse1 (- 1)) (* (- 1) .cse2) .cse5) .cse6))) (and (not (= (+ (* .cse0 v_main_~s~0_BEFORE_CALL_349 v_main_~yy~0_BEFORE_CALL_154) (* v_main_~y~0_BEFORE_CALL_371 v_main_~y~0_BEFORE_CALL_371 v_main_~r~0_BEFORE_CALL_304) (* v_main_~p~0_BEFORE_CALL_284 v_main_~y~0_BEFORE_CALL_371 v_main_~x~0_BEFORE_CALL_363) (* .cse0 v_main_~xy~0_BEFORE_CALL_182 v_main_~q~0_BEFORE_CALL_346)) (+ (* v_main_~p~0_BEFORE_CALL_284 v_main_~xy~0_BEFORE_CALL_182) (* v_main_~yy~0_BEFORE_CALL_154 v_main_~r~0_BEFORE_CALL_304) (* .cse0 v_main_~y~0_BEFORE_CALL_371 v_main_~x~0_BEFORE_CALL_363 v_main_~q~0_BEFORE_CALL_346) (* .cse0 v_main_~y~0_BEFORE_CALL_371 v_main_~y~0_BEFORE_CALL_371 v_main_~s~0_BEFORE_CALL_349)))) (= (+ .cse1 (* .cse0 v_main_~x~0_BEFORE_CALL_363 v_main_~q~0_BEFORE_CALL_346) (* .cse0 v_main_~y~0_BEFORE_CALL_371 v_main_~s~0_BEFORE_CALL_349) .cse2) .cse3))) (not (= |c___VERIFIER_assert_#in~cond| 1)) (<= (+ .cse7 (* v_main_~k~0_BEFORE_CALL_221 v_main_~x~0_BEFORE_CALL_363 v_main_~q~0_BEFORE_CALL_346) .cse8 (* v_main_~k~0_BEFORE_CALL_221 v_main_~y~0_BEFORE_CALL_371 v_main_~s~0_BEFORE_CALL_349)) .cse3) (= (+ .cse1 .cse2 (* v_main_~y~0_BEFORE_CALL_371 (+ .cse1 .cse2))) (+ .cse1 (* .cse9 v_main_~xy~0_BEFORE_CALL_182) (* .cse10 v_main_~yy~0_BEFORE_CALL_154) .cse2)) (not (= (+ .cse7 (* v_main_~y~0_BEFORE_CALL_371 .cse6) .cse8) (+ .cse7 (* v_main_~xy~0_BEFORE_CALL_182 v_main_~q~0_BEFORE_CALL_346) .cse8 (* v_main_~s~0_BEFORE_CALL_349 v_main_~yy~0_BEFORE_CALL_154)))))))) is different from true [2022-03-18 02:47:03,290 WARN L855 $PredicateComparison]: unable to prove that (or (forall ((v_main_~k~0_BEFORE_CALL_221 Int) (v_main_~yy~0_BEFORE_CALL_154 Int) (v_main_~s~0_BEFORE_CALL_349 Int) (v_main_~p~0_BEFORE_CALL_284 Int) (v_main_~q~0_BEFORE_CALL_346 Int) (v_main_~xy~0_BEFORE_CALL_182 Int) (v_main_~y~0_BEFORE_CALL_371 Int) (v_main_~x~0_BEFORE_CALL_363 Int) (v_main_~r~0_BEFORE_CALL_304 Int)) (let ((.cse7 (* v_main_~x~0_BEFORE_CALL_363 v_main_~q~0_BEFORE_CALL_346)) (.cse8 (* v_main_~y~0_BEFORE_CALL_371 v_main_~s~0_BEFORE_CALL_349)) (.cse9 (+ (* (- 1) v_main_~k~0_BEFORE_CALL_221 v_main_~q~0_BEFORE_CALL_346) v_main_~p~0_BEFORE_CALL_284)) (.cse10 (+ (* (- 1) (* v_main_~k~0_BEFORE_CALL_221 v_main_~s~0_BEFORE_CALL_349)) v_main_~r~0_BEFORE_CALL_304)) (.cse4 (* v_main_~p~0_BEFORE_CALL_284 v_main_~x~0_BEFORE_CALL_363)) (.cse5 (* v_main_~y~0_BEFORE_CALL_371 v_main_~r~0_BEFORE_CALL_304))) (let ((.cse3 (+ .cse4 .cse5)) (.cse1 (* .cse10 v_main_~y~0_BEFORE_CALL_371)) (.cse2 (* .cse9 v_main_~x~0_BEFORE_CALL_363)) (.cse6 (+ .cse7 .cse8))) (or (let ((.cse0 (div (+ .cse4 (* .cse1 (- 1)) (* (- 1) .cse2) .cse5) .cse6))) (and (not (= (+ (* .cse0 v_main_~s~0_BEFORE_CALL_349 v_main_~yy~0_BEFORE_CALL_154) (* v_main_~y~0_BEFORE_CALL_371 v_main_~y~0_BEFORE_CALL_371 v_main_~r~0_BEFORE_CALL_304) (* v_main_~p~0_BEFORE_CALL_284 v_main_~y~0_BEFORE_CALL_371 v_main_~x~0_BEFORE_CALL_363) (* .cse0 v_main_~xy~0_BEFORE_CALL_182 v_main_~q~0_BEFORE_CALL_346)) (+ (* v_main_~p~0_BEFORE_CALL_284 v_main_~xy~0_BEFORE_CALL_182) (* v_main_~yy~0_BEFORE_CALL_154 v_main_~r~0_BEFORE_CALL_304) (* .cse0 v_main_~y~0_BEFORE_CALL_371 v_main_~x~0_BEFORE_CALL_363 v_main_~q~0_BEFORE_CALL_346) (* .cse0 v_main_~y~0_BEFORE_CALL_371 v_main_~y~0_BEFORE_CALL_371 v_main_~s~0_BEFORE_CALL_349)))) (= (+ .cse1 (* .cse0 v_main_~x~0_BEFORE_CALL_363 v_main_~q~0_BEFORE_CALL_346) (* .cse0 v_main_~y~0_BEFORE_CALL_371 v_main_~s~0_BEFORE_CALL_349) .cse2) .cse3))) (<= (+ .cse7 (* v_main_~k~0_BEFORE_CALL_221 v_main_~x~0_BEFORE_CALL_363 v_main_~q~0_BEFORE_CALL_346) .cse8 (* v_main_~k~0_BEFORE_CALL_221 v_main_~y~0_BEFORE_CALL_371 v_main_~s~0_BEFORE_CALL_349)) .cse3) (= (+ .cse1 .cse2 (* v_main_~y~0_BEFORE_CALL_371 (+ .cse1 .cse2))) (+ .cse1 (* .cse9 v_main_~xy~0_BEFORE_CALL_182) (* .cse10 v_main_~yy~0_BEFORE_CALL_154) .cse2)) (not (= (+ .cse7 (* v_main_~y~0_BEFORE_CALL_371 .cse6) .cse8) (+ .cse7 (* v_main_~xy~0_BEFORE_CALL_182 v_main_~q~0_BEFORE_CALL_346) .cse8 (* v_main_~s~0_BEFORE_CALL_349 v_main_~yy~0_BEFORE_CALL_154)))))))) (not (= |c___VERIFIER_assert_#in~cond| 1))) is different from true [2022-03-18 02:48:50,108 WARN L855 $PredicateComparison]: unable to prove that (or (forall ((v_main_~k~0_BEFORE_CALL_221 Int) (v_main_~yy~0_BEFORE_CALL_154 Int) (v_main_~s~0_BEFORE_CALL_349 Int) (v_main_~p~0_BEFORE_CALL_284 Int) (v_main_~q~0_BEFORE_CALL_346 Int) (v_main_~xy~0_BEFORE_CALL_182 Int) (v_main_~y~0_BEFORE_CALL_371 Int) (v_main_~x~0_BEFORE_CALL_363 Int) (v_main_~r~0_BEFORE_CALL_304 Int)) (let ((.cse7 (* v_main_~x~0_BEFORE_CALL_363 v_main_~q~0_BEFORE_CALL_346)) (.cse8 (* v_main_~y~0_BEFORE_CALL_371 v_main_~s~0_BEFORE_CALL_349)) (.cse9 (+ (* (- 1) v_main_~k~0_BEFORE_CALL_221 v_main_~q~0_BEFORE_CALL_346) v_main_~p~0_BEFORE_CALL_284)) (.cse10 (+ (* (- 1) (* v_main_~k~0_BEFORE_CALL_221 v_main_~s~0_BEFORE_CALL_349)) v_main_~r~0_BEFORE_CALL_304)) (.cse4 (* v_main_~p~0_BEFORE_CALL_284 v_main_~x~0_BEFORE_CALL_363)) (.cse5 (* v_main_~y~0_BEFORE_CALL_371 v_main_~r~0_BEFORE_CALL_304))) (let ((.cse3 (+ .cse4 .cse5)) (.cse1 (* .cse10 v_main_~y~0_BEFORE_CALL_371)) (.cse2 (* .cse9 v_main_~x~0_BEFORE_CALL_363)) (.cse6 (+ .cse7 .cse8))) (or (let ((.cse0 (div (+ .cse4 (* .cse1 (- 1)) (* (- 1) .cse2) .cse5) .cse6))) (and (not (= (+ (* .cse0 v_main_~s~0_BEFORE_CALL_349 v_main_~yy~0_BEFORE_CALL_154) (* v_main_~y~0_BEFORE_CALL_371 v_main_~y~0_BEFORE_CALL_371 v_main_~r~0_BEFORE_CALL_304) (* v_main_~p~0_BEFORE_CALL_284 v_main_~y~0_BEFORE_CALL_371 v_main_~x~0_BEFORE_CALL_363) (* .cse0 v_main_~xy~0_BEFORE_CALL_182 v_main_~q~0_BEFORE_CALL_346)) (+ (* v_main_~p~0_BEFORE_CALL_284 v_main_~xy~0_BEFORE_CALL_182) (* v_main_~yy~0_BEFORE_CALL_154 v_main_~r~0_BEFORE_CALL_304) (* .cse0 v_main_~y~0_BEFORE_CALL_371 v_main_~x~0_BEFORE_CALL_363 v_main_~q~0_BEFORE_CALL_346) (* .cse0 v_main_~y~0_BEFORE_CALL_371 v_main_~y~0_BEFORE_CALL_371 v_main_~s~0_BEFORE_CALL_349)))) (= (+ .cse1 (* .cse0 v_main_~x~0_BEFORE_CALL_363 v_main_~q~0_BEFORE_CALL_346) (* .cse0 v_main_~y~0_BEFORE_CALL_371 v_main_~s~0_BEFORE_CALL_349) .cse2) .cse3))) (<= (+ .cse7 (* v_main_~k~0_BEFORE_CALL_221 v_main_~x~0_BEFORE_CALL_363 v_main_~q~0_BEFORE_CALL_346) .cse8 (* v_main_~k~0_BEFORE_CALL_221 v_main_~y~0_BEFORE_CALL_371 v_main_~s~0_BEFORE_CALL_349)) .cse3) (= (+ .cse1 .cse2 (* v_main_~y~0_BEFORE_CALL_371 (+ .cse1 .cse2))) (+ .cse1 (* .cse9 v_main_~xy~0_BEFORE_CALL_182) (* .cse10 v_main_~yy~0_BEFORE_CALL_154) .cse2)) (not (= (+ .cse7 (* v_main_~y~0_BEFORE_CALL_371 .cse6) .cse8) (+ .cse7 (* v_main_~xy~0_BEFORE_CALL_182 v_main_~q~0_BEFORE_CALL_346) .cse8 (* v_main_~s~0_BEFORE_CALL_349 v_main_~yy~0_BEFORE_CALL_154)))))))) (not (= |c___VERIFIER_assert_#in~cond| 1)) (= c___VERIFIER_assert_~cond 0)) is different from true [2022-03-18 02:49:41,368 WARN L855 $PredicateComparison]: unable to prove that (or (forall ((v_main_~k~0_BEFORE_CALL_221 Int) (v_main_~yy~0_BEFORE_CALL_154 Int) (v_main_~s~0_BEFORE_CALL_349 Int) (v_main_~p~0_BEFORE_CALL_284 Int) (v_main_~q~0_BEFORE_CALL_346 Int) (v_main_~xy~0_BEFORE_CALL_182 Int) (v_main_~y~0_BEFORE_CALL_371 Int) (v_main_~x~0_BEFORE_CALL_363 Int) (v_main_~r~0_BEFORE_CALL_304 Int)) (let ((.cse7 (* v_main_~x~0_BEFORE_CALL_363 v_main_~q~0_BEFORE_CALL_346)) (.cse8 (* v_main_~y~0_BEFORE_CALL_371 v_main_~s~0_BEFORE_CALL_349)) (.cse9 (+ (* (- 1) v_main_~k~0_BEFORE_CALL_221 v_main_~q~0_BEFORE_CALL_346) v_main_~p~0_BEFORE_CALL_284)) (.cse10 (+ (* (- 1) (* v_main_~k~0_BEFORE_CALL_221 v_main_~s~0_BEFORE_CALL_349)) v_main_~r~0_BEFORE_CALL_304)) (.cse3 (* v_main_~p~0_BEFORE_CALL_284 v_main_~x~0_BEFORE_CALL_363)) (.cse4 (* v_main_~y~0_BEFORE_CALL_371 v_main_~r~0_BEFORE_CALL_304))) (let ((.cse6 (+ .cse3 .cse4)) (.cse0 (* .cse10 v_main_~y~0_BEFORE_CALL_371)) (.cse2 (* .cse9 v_main_~x~0_BEFORE_CALL_363)) (.cse5 (+ .cse7 .cse8))) (or (= (let ((.cse1 (div (+ .cse3 (* .cse0 (- 1)) (* (- 1) .cse2) .cse4) .cse5))) (+ .cse0 (* .cse1 v_main_~x~0_BEFORE_CALL_363 v_main_~q~0_BEFORE_CALL_346) (* .cse1 v_main_~y~0_BEFORE_CALL_371 v_main_~s~0_BEFORE_CALL_349) .cse2)) .cse6) (<= (+ .cse7 (* v_main_~k~0_BEFORE_CALL_221 v_main_~x~0_BEFORE_CALL_363 v_main_~q~0_BEFORE_CALL_346) .cse8 (* v_main_~k~0_BEFORE_CALL_221 v_main_~y~0_BEFORE_CALL_371 v_main_~s~0_BEFORE_CALL_349)) .cse6) (= (+ .cse0 .cse2 (* v_main_~y~0_BEFORE_CALL_371 (+ .cse0 .cse2))) (+ .cse0 (* .cse9 v_main_~xy~0_BEFORE_CALL_182) (* .cse10 v_main_~yy~0_BEFORE_CALL_154) .cse2)) (not (= (+ .cse7 (* v_main_~y~0_BEFORE_CALL_371 .cse5) .cse8) (+ .cse7 (* v_main_~xy~0_BEFORE_CALL_182 v_main_~q~0_BEFORE_CALL_346) .cse8 (* v_main_~s~0_BEFORE_CALL_349 v_main_~yy~0_BEFORE_CALL_154)))))))) (not (= |c___VERIFIER_assert_#in~cond| 1))) is different from true [2022-03-18 02:51:17,140 WARN L855 $PredicateComparison]: unable to prove that (let ((.cse8 (* c_main_~q~0 c_main_~x~0)) (.cse9 (* c_main_~s~0 c_main_~y~0)) (.cse2 (+ c_main_~p~0 (* (- 1) c_main_~q~0 c_main_~k~0))) (.cse3 (+ c_main_~r~0 (* (- 1) (* c_main_~s~0 c_main_~k~0))))) (let ((.cse0 (* .cse3 c_main_~y~0)) (.cse1 (* .cse2 c_main_~x~0)) (.cse4 (* c_main_~q~0 c_main_~xy~0)) (.cse5 (* c_main_~yy~0 c_main_~s~0)) (.cse7 (+ .cse8 .cse9))) (or (not (= (+ .cse0 .cse1 (* c_main_~c~0 c_main_~y~0)) (+ (* c_main_~xy~0 .cse2) c_main_~c~0 (* c_main_~yy~0 .cse3)))) (not (= c_main_~c~0 (+ .cse0 .cse1))) (let ((.cse6 (div (* 2 c_main_~c~0) c_main_~c~0))) (= (+ .cse4 .cse5 (* .cse6 .cse3 c_main_~y~0 c_main_~y~0) (* .cse6 .cse2 c_main_~x~0 c_main_~y~0)) (+ (* c_main_~yy~0 .cse6 .cse3) (* c_main_~q~0 c_main_~x~0 c_main_~y~0) (* c_main_~xy~0 .cse6 .cse2) (* c_main_~s~0 c_main_~y~0 c_main_~y~0)))) (<= (* 3 c_main_~c~0) .cse7) (not (= (+ .cse8 .cse9 (* c_main_~b~0 c_main_~y~0)) (+ .cse4 .cse5 c_main_~b~0))) (<= c_main_~b~0 c_main_~c~0) (not (= c_main_~b~0 .cse7))))) is different from true [2022-03-18 02:52:14,996 WARN L855 $PredicateComparison]: unable to prove that (let ((.cse4 (* c_main_~q~0 c_main_~x~0)) (.cse5 (* c_main_~s~0 c_main_~y~0))) (let ((.cse1 (* c_main_~q~0 c_main_~xy~0)) (.cse2 (* c_main_~yy~0 c_main_~s~0)) (.cse3 (+ .cse4 .cse5)) (.cse8 (* c_main_~p~0 c_main_~x~0)) (.cse9 (* c_main_~r~0 c_main_~y~0)) (.cse6 (* c_main_~q~0 c_main_~x~0 c_main_~k~0)) (.cse7 (* c_main_~s~0 c_main_~y~0 c_main_~k~0))) (or (let ((.cse0 (div (* 2 c_main_~c~0) c_main_~c~0))) (= (+ (* c_main_~p~0 .cse0 c_main_~x~0 c_main_~y~0) .cse1 (* c_main_~q~0 c_main_~xy~0 .cse0 c_main_~k~0) .cse2 (* c_main_~yy~0 c_main_~s~0 .cse0 c_main_~k~0) (* .cse0 c_main_~r~0 c_main_~y~0 c_main_~y~0)) (+ (* c_main_~yy~0 .cse0 c_main_~r~0) (* c_main_~s~0 .cse0 c_main_~y~0 c_main_~y~0 c_main_~k~0) (* c_main_~q~0 .cse0 c_main_~x~0 c_main_~y~0 c_main_~k~0) (* c_main_~q~0 c_main_~x~0 c_main_~y~0) (* c_main_~xy~0 c_main_~p~0 .cse0) (* c_main_~s~0 c_main_~y~0 c_main_~y~0)))) (<= (* 3 c_main_~c~0) .cse3) (not (= (+ .cse4 .cse5 (* c_main_~b~0 c_main_~y~0)) (+ .cse1 .cse2 c_main_~b~0))) (<= c_main_~b~0 c_main_~c~0) (not (= c_main_~b~0 .cse3)) (not (= (+ (* c_main_~yy~0 c_main_~r~0) .cse6 c_main_~c~0 .cse7 (* c_main_~xy~0 c_main_~p~0)) (+ (* c_main_~q~0 c_main_~xy~0 c_main_~k~0) (* c_main_~yy~0 c_main_~s~0 c_main_~k~0) .cse8 .cse9 (* c_main_~c~0 c_main_~y~0)))) (not (= (+ .cse8 .cse9) (+ .cse6 c_main_~c~0 .cse7)))))) is different from true [2022-03-18 02:52:43,536 WARN L855 $PredicateComparison]: unable to prove that (let ((.cse9 (* c_main_~p~0 c_main_~x~0)) (.cse10 (* c_main_~r~0 c_main_~y~0)) (.cse5 (* c_main_~q~0 c_main_~x~0)) (.cse6 (* c_main_~s~0 c_main_~y~0))) (let ((.cse1 (* c_main_~q~0 c_main_~xy~0)) (.cse2 (* c_main_~yy~0 c_main_~s~0)) (.cse4 (+ .cse5 .cse6)) (.cse3 (+ .cse9 .cse10)) (.cse7 (* c_main_~q~0 c_main_~x~0 c_main_~k~0)) (.cse8 (* c_main_~s~0 c_main_~y~0 c_main_~k~0))) (or (let ((.cse0 (div (* 2 c_main_~c~0) c_main_~c~0))) (= (+ (* c_main_~p~0 .cse0 c_main_~x~0 c_main_~y~0) .cse1 (* c_main_~q~0 c_main_~xy~0 .cse0 c_main_~k~0) .cse2 (* c_main_~yy~0 c_main_~s~0 .cse0 c_main_~k~0) (* .cse0 c_main_~r~0 c_main_~y~0 c_main_~y~0)) (+ (* c_main_~yy~0 .cse0 c_main_~r~0) (* c_main_~s~0 .cse0 c_main_~y~0 c_main_~y~0 c_main_~k~0) (* c_main_~q~0 .cse0 c_main_~x~0 c_main_~y~0 c_main_~k~0) (* c_main_~q~0 c_main_~x~0 c_main_~y~0) (* c_main_~xy~0 c_main_~p~0 .cse0) (* c_main_~s~0 c_main_~y~0 c_main_~y~0)))) (not (= .cse3 c_main_~a~0)) (<= (* 3 c_main_~c~0) .cse4) (not (= (+ .cse5 .cse6 (* c_main_~b~0 c_main_~y~0)) (+ .cse1 .cse2 c_main_~b~0))) (<= c_main_~b~0 c_main_~c~0) (not (= c_main_~b~0 .cse4)) (not (= (+ (* c_main_~yy~0 c_main_~r~0) .cse7 c_main_~c~0 .cse8 (* c_main_~xy~0 c_main_~p~0)) (+ (* c_main_~q~0 c_main_~xy~0 c_main_~k~0) (* c_main_~yy~0 c_main_~s~0 c_main_~k~0) .cse9 .cse10 (* c_main_~c~0 c_main_~y~0)))) (not (= .cse3 (+ .cse7 c_main_~c~0 .cse8)))))) is different from true [2022-03-18 02:53:21,780 WARN L855 $PredicateComparison]: unable to prove that (or (not (= |c___VERIFIER_assert_#in~cond| 0)) (forall ((v_main_~yy~0_BEFORE_CALL_165 Int) (v_main_~p~0_BEFORE_CALL_295 Int) (v_main_~q~0_BEFORE_CALL_357 Int) (v_main_~s~0_BEFORE_CALL_360 Int) (v_main_~k~0_BEFORE_CALL_224 Int) (v_main_~xy~0_BEFORE_CALL_193 Int) (v_main_~y~0_BEFORE_CALL_382 Int) (v_main_~x~0_BEFORE_CALL_374 Int) (v_main_~r~0_BEFORE_CALL_315 Int)) (let ((.cse0 (* v_main_~y~0_BEFORE_CALL_382 v_main_~r~0_BEFORE_CALL_315)) (.cse9 (* (- 1) v_main_~k~0_BEFORE_CALL_224 v_main_~x~0_BEFORE_CALL_374 v_main_~q~0_BEFORE_CALL_357)) (.cse10 (* (- 1) v_main_~k~0_BEFORE_CALL_224 v_main_~y~0_BEFORE_CALL_382 v_main_~s~0_BEFORE_CALL_360)) (.cse1 (* v_main_~p~0_BEFORE_CALL_295 v_main_~x~0_BEFORE_CALL_374))) (let ((.cse11 (+ .cse0 .cse9 .cse10 .cse1)) (.cse7 (* v_main_~xy~0_BEFORE_CALL_193 v_main_~q~0_BEFORE_CALL_357)) (.cse8 (* v_main_~s~0_BEFORE_CALL_360 v_main_~yy~0_BEFORE_CALL_165)) (.cse2 (* v_main_~k~0_BEFORE_CALL_224 v_main_~x~0_BEFORE_CALL_374 v_main_~q~0_BEFORE_CALL_357)) (.cse4 (* v_main_~x~0_BEFORE_CALL_374 v_main_~q~0_BEFORE_CALL_357)) (.cse5 (* v_main_~y~0_BEFORE_CALL_382 v_main_~s~0_BEFORE_CALL_360)) (.cse3 (* v_main_~k~0_BEFORE_CALL_224 v_main_~y~0_BEFORE_CALL_382 v_main_~s~0_BEFORE_CALL_360))) (or (<= (+ (* .cse0 3) (* 3 .cse1)) (+ (* .cse2 3) (* 3 .cse3) .cse4 .cse5)) (let ((.cse6 (div (+ (* 2 .cse9) (* .cse0 2) (* 2 .cse1) (* 2 .cse10)) .cse11))) (= (+ (* v_main_~y~0_BEFORE_CALL_382 v_main_~y~0_BEFORE_CALL_382 .cse6 v_main_~r~0_BEFORE_CALL_315) (* v_main_~k~0_BEFORE_CALL_224 .cse6 v_main_~s~0_BEFORE_CALL_360 v_main_~yy~0_BEFORE_CALL_165) .cse7 .cse8 (* v_main_~k~0_BEFORE_CALL_224 .cse6 v_main_~xy~0_BEFORE_CALL_193 v_main_~q~0_BEFORE_CALL_357) (* v_main_~p~0_BEFORE_CALL_295 v_main_~y~0_BEFORE_CALL_382 .cse6 v_main_~x~0_BEFORE_CALL_374)) (+ (* v_main_~p~0_BEFORE_CALL_295 .cse6 v_main_~xy~0_BEFORE_CALL_193) (* v_main_~y~0_BEFORE_CALL_382 v_main_~y~0_BEFORE_CALL_382 v_main_~s~0_BEFORE_CALL_360) (* v_main_~k~0_BEFORE_CALL_224 v_main_~y~0_BEFORE_CALL_382 .cse6 v_main_~x~0_BEFORE_CALL_374 v_main_~q~0_BEFORE_CALL_357) (* .cse6 v_main_~yy~0_BEFORE_CALL_165 v_main_~r~0_BEFORE_CALL_315) (* v_main_~y~0_BEFORE_CALL_382 v_main_~x~0_BEFORE_CALL_374 v_main_~q~0_BEFORE_CALL_357) (* v_main_~k~0_BEFORE_CALL_224 v_main_~y~0_BEFORE_CALL_382 v_main_~y~0_BEFORE_CALL_382 .cse6 v_main_~s~0_BEFORE_CALL_360)))) (not (= (+ .cse0 (* v_main_~k~0_BEFORE_CALL_224 v_main_~s~0_BEFORE_CALL_360 v_main_~yy~0_BEFORE_CALL_165) (* v_main_~y~0_BEFORE_CALL_382 .cse11) .cse1 (* v_main_~k~0_BEFORE_CALL_224 v_main_~xy~0_BEFORE_CALL_193 v_main_~q~0_BEFORE_CALL_357)) (+ (* v_main_~yy~0_BEFORE_CALL_165 v_main_~r~0_BEFORE_CALL_315) .cse0 .cse2 .cse9 (* v_main_~p~0_BEFORE_CALL_295 v_main_~xy~0_BEFORE_CALL_193) .cse10 .cse1 .cse3))) (not (= (+ .cse7 .cse8 .cse4 .cse5) (+ (* v_main_~y~0_BEFORE_CALL_382 (+ .cse4 .cse5)) .cse4 .cse5))) (<= (+ .cse2 .cse4 .cse5 .cse3) (+ .cse0 .cse1))))))) is different from true [2022-03-18 02:54:38,567 WARN L855 $PredicateComparison]: unable to prove that (or (not (= |c___VERIFIER_assert_#in~cond| 0)) (forall ((v_main_~yy~0_BEFORE_CALL_165 Int) (v_main_~p~0_BEFORE_CALL_295 Int) (v_main_~q~0_BEFORE_CALL_357 Int) (v_main_~s~0_BEFORE_CALL_360 Int) (v_main_~k~0_BEFORE_CALL_224 Int) (v_main_~xy~0_BEFORE_CALL_193 Int) (v_main_~y~0_BEFORE_CALL_382 Int) (v_main_~x~0_BEFORE_CALL_374 Int) (v_main_~r~0_BEFORE_CALL_315 Int)) (let ((.cse0 (* v_main_~y~0_BEFORE_CALL_382 v_main_~r~0_BEFORE_CALL_315)) (.cse9 (* (- 1) v_main_~k~0_BEFORE_CALL_224 v_main_~x~0_BEFORE_CALL_374 v_main_~q~0_BEFORE_CALL_357)) (.cse10 (* (- 1) v_main_~k~0_BEFORE_CALL_224 v_main_~y~0_BEFORE_CALL_382 v_main_~s~0_BEFORE_CALL_360)) (.cse1 (* v_main_~p~0_BEFORE_CALL_295 v_main_~x~0_BEFORE_CALL_374))) (let ((.cse11 (+ .cse0 .cse9 .cse10 .cse1)) (.cse7 (* v_main_~xy~0_BEFORE_CALL_193 v_main_~q~0_BEFORE_CALL_357)) (.cse8 (* v_main_~s~0_BEFORE_CALL_360 v_main_~yy~0_BEFORE_CALL_165)) (.cse2 (* v_main_~k~0_BEFORE_CALL_224 v_main_~x~0_BEFORE_CALL_374 v_main_~q~0_BEFORE_CALL_357)) (.cse4 (* v_main_~x~0_BEFORE_CALL_374 v_main_~q~0_BEFORE_CALL_357)) (.cse5 (* v_main_~y~0_BEFORE_CALL_382 v_main_~s~0_BEFORE_CALL_360)) (.cse3 (* v_main_~k~0_BEFORE_CALL_224 v_main_~y~0_BEFORE_CALL_382 v_main_~s~0_BEFORE_CALL_360))) (or (<= (+ (* .cse0 3) (* 3 .cse1)) (+ (* .cse2 3) (* 3 .cse3) .cse4 .cse5)) (let ((.cse6 (div (+ (* 2 .cse9) (* .cse0 2) (* 2 .cse1) (* 2 .cse10)) .cse11))) (= (+ (* v_main_~y~0_BEFORE_CALL_382 v_main_~y~0_BEFORE_CALL_382 .cse6 v_main_~r~0_BEFORE_CALL_315) (* v_main_~k~0_BEFORE_CALL_224 .cse6 v_main_~s~0_BEFORE_CALL_360 v_main_~yy~0_BEFORE_CALL_165) .cse7 .cse8 (* v_main_~k~0_BEFORE_CALL_224 .cse6 v_main_~xy~0_BEFORE_CALL_193 v_main_~q~0_BEFORE_CALL_357) (* v_main_~p~0_BEFORE_CALL_295 v_main_~y~0_BEFORE_CALL_382 .cse6 v_main_~x~0_BEFORE_CALL_374)) (+ (* v_main_~p~0_BEFORE_CALL_295 .cse6 v_main_~xy~0_BEFORE_CALL_193) (* v_main_~y~0_BEFORE_CALL_382 v_main_~y~0_BEFORE_CALL_382 v_main_~s~0_BEFORE_CALL_360) (* v_main_~k~0_BEFORE_CALL_224 v_main_~y~0_BEFORE_CALL_382 .cse6 v_main_~x~0_BEFORE_CALL_374 v_main_~q~0_BEFORE_CALL_357) (* .cse6 v_main_~yy~0_BEFORE_CALL_165 v_main_~r~0_BEFORE_CALL_315) (* v_main_~y~0_BEFORE_CALL_382 v_main_~x~0_BEFORE_CALL_374 v_main_~q~0_BEFORE_CALL_357) (* v_main_~k~0_BEFORE_CALL_224 v_main_~y~0_BEFORE_CALL_382 v_main_~y~0_BEFORE_CALL_382 .cse6 v_main_~s~0_BEFORE_CALL_360)))) (not (= (+ .cse0 (* v_main_~k~0_BEFORE_CALL_224 v_main_~s~0_BEFORE_CALL_360 v_main_~yy~0_BEFORE_CALL_165) (* v_main_~y~0_BEFORE_CALL_382 .cse11) .cse1 (* v_main_~k~0_BEFORE_CALL_224 v_main_~xy~0_BEFORE_CALL_193 v_main_~q~0_BEFORE_CALL_357)) (+ (* v_main_~yy~0_BEFORE_CALL_165 v_main_~r~0_BEFORE_CALL_315) .cse0 .cse2 .cse9 (* v_main_~p~0_BEFORE_CALL_295 v_main_~xy~0_BEFORE_CALL_193) .cse10 .cse1 .cse3))) (not (= (+ .cse7 .cse8 .cse4 .cse5) (+ (* v_main_~y~0_BEFORE_CALL_382 (+ .cse4 .cse5)) .cse4 .cse5))) (<= (+ .cse2 .cse4 .cse5 .cse3) (+ .cse0 .cse1)))))) (= c___VERIFIER_assert_~cond 0)) is different from true [2022-03-18 02:55:07,563 WARN L855 $PredicateComparison]: unable to prove that (let ((.cse6 (* c_main_~q~0 c_main_~x~0)) (.cse7 (* c_main_~s~0 c_main_~y~0))) (let ((.cse1 (* c_main_~q~0 c_main_~xy~0)) (.cse2 (* c_main_~yy~0 c_main_~s~0)) (.cse5 (+ .cse6 .cse7)) (.cse3 (* c_main_~p~0 c_main_~x~0)) (.cse4 (* c_main_~r~0 c_main_~y~0))) (or (let ((.cse0 (div (* 2 c_main_~c~0) c_main_~c~0))) (= (+ (* c_main_~p~0 .cse0 c_main_~x~0 c_main_~y~0) .cse1 (* c_main_~q~0 c_main_~xy~0 .cse0 c_main_~k~0) .cse2 (* c_main_~yy~0 c_main_~s~0 .cse0 c_main_~k~0) (* .cse0 c_main_~r~0 c_main_~y~0 c_main_~y~0)) (+ (* c_main_~yy~0 .cse0 c_main_~r~0) (* c_main_~s~0 .cse0 c_main_~y~0 c_main_~y~0 c_main_~k~0) (* c_main_~q~0 .cse0 c_main_~x~0 c_main_~y~0 c_main_~k~0) (* c_main_~q~0 c_main_~x~0 c_main_~y~0) (* c_main_~xy~0 c_main_~p~0 .cse0) (* c_main_~s~0 c_main_~y~0 c_main_~y~0)))) (not (= (+ .cse3 .cse4) c_main_~a~0)) (not (= (+ (* c_main_~b~0 c_main_~k~0) c_main_~c~0) c_main_~a~0)) (<= (* 3 c_main_~c~0) .cse5) (not (= (+ .cse6 .cse7 (* c_main_~b~0 c_main_~y~0)) (+ .cse1 .cse2 c_main_~b~0))) (<= c_main_~b~0 c_main_~c~0) (not (= c_main_~b~0 .cse5)) (not (= (+ (* c_main_~yy~0 c_main_~r~0) (* c_main_~q~0 c_main_~x~0 c_main_~k~0) c_main_~c~0 (* c_main_~s~0 c_main_~y~0 c_main_~k~0) (* c_main_~xy~0 c_main_~p~0)) (+ (* c_main_~q~0 c_main_~xy~0 c_main_~k~0) (* c_main_~yy~0 c_main_~s~0 c_main_~k~0) .cse3 .cse4 (* c_main_~c~0 c_main_~y~0))))))) is different from true