/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/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/nla-digbench/egcd-ll.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-d966a43 [2022-01-31 03:30:06,841 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-31 03:30:06,842 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-31 03:30:06,898 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-01-31 03:30:06,932 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-31 03:30:06,932 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-31 03:30:06,932 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-31 03:30:06,933 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2022-01-31 03:30:06,951 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-31 03:30:06,951 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-31 03:30:06,953 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-31 03:30:06,953 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-31 03:30:06,953 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-01-31 03:30:06,953 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-01-31 03:30:06,954 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-31 03:30:06,954 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-31 03:30:06,954 INFO L138 SettingsManager]: * Use SBE=true [2022-01-31 03:30:06,954 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-31 03:30:06,955 INFO L138 SettingsManager]: * sizeof long=4 [2022-01-31 03:30:06,955 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-31 03:30:06,955 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-01-31 03:30:06,955 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-31 03:30:06,955 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-31 03:30:06,955 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-31 03:30:06,955 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-31 03:30:06,955 INFO L138 SettingsManager]: * sizeof long double=12 [2022-01-31 03:30:06,955 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-31 03:30:06,955 INFO L138 SettingsManager]: * Use constant arrays=true [2022-01-31 03:30:06,955 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-31 03:30:06,956 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-31 03:30:06,956 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-31 03:30:06,956 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-31 03:30:06,957 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-31 03:30:06,957 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-31 03:30:06,957 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-31 03:30:06,957 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-31 03:30:06,957 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-31 03:30:06,957 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-31 03:30:06,957 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-31 03:30:06,957 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-31 03:30:06,957 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-31 03:30:06,958 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-31 03:30:07,109 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-31 03:30:07,124 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-31 03:30:07,126 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-31 03:30:07,127 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-31 03:30:07,130 INFO L275 PluginConnector]: CDTParser initialized [2022-01-31 03:30:07,131 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/nla-digbench/egcd-ll.c [2022-01-31 03:30:07,182 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6dd48e597/4e75400019f1457cb4146a667f57a3dd/FLAGaf41ebcb0 [2022-01-31 03:30:07,525 INFO L306 CDTParser]: Found 1 translation units. [2022-01-31 03:30:07,526 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench/egcd-ll.c [2022-01-31 03:30:07,530 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6dd48e597/4e75400019f1457cb4146a667f57a3dd/FLAGaf41ebcb0 [2022-01-31 03:30:07,538 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6dd48e597/4e75400019f1457cb4146a667f57a3dd [2022-01-31 03:30:07,539 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-31 03:30:07,540 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2022-01-31 03:30:07,541 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-31 03:30:07,541 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-31 03:30:07,545 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-31 03:30:07,546 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.01 03:30:07" (1/1) ... [2022-01-31 03:30:07,546 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7dc4f181 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 03:30:07, skipping insertion in model container [2022-01-31 03:30:07,547 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.01 03:30:07" (1/1) ... [2022-01-31 03:30:07,550 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-31 03:30:07,563 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-31 03:30:07,652 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/egcd-ll.c[489,502] [2022-01-31 03:30:07,684 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-31 03:30:07,688 INFO L203 MainTranslator]: Completed pre-run [2022-01-31 03:30:07,697 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/egcd-ll.c[489,502] [2022-01-31 03:30:07,705 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-31 03:30:07,713 INFO L208 MainTranslator]: Completed translation [2022-01-31 03:30:07,713 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 03:30:07 WrapperNode [2022-01-31 03:30:07,713 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-31 03:30:07,714 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-31 03:30:07,714 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-31 03:30:07,714 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-31 03:30:07,720 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 03:30:07" (1/1) ... [2022-01-31 03:30:07,720 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 03:30:07" (1/1) ... [2022-01-31 03:30:07,724 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 03:30:07" (1/1) ... [2022-01-31 03:30:07,724 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 03:30:07" (1/1) ... [2022-01-31 03:30:07,727 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 03:30:07" (1/1) ... [2022-01-31 03:30:07,729 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 03:30:07" (1/1) ... [2022-01-31 03:30:07,729 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 03:30:07" (1/1) ... [2022-01-31 03:30:07,730 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-31 03:30:07,731 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-31 03:30:07,731 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-31 03:30:07,731 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-31 03:30:07,735 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 03:30:07" (1/1) ... [2022-01-31 03:30:07,752 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-31 03:30:07,758 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-31 03:30:07,766 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-01-31 03:30:07,771 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-01-31 03:30:07,789 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2022-01-31 03:30:07,789 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-31 03:30:07,789 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2022-01-31 03:30:07,789 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-01-31 03:30:07,789 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-01-31 03:30:07,789 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2022-01-31 03:30:07,789 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2022-01-31 03:30:07,789 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2022-01-31 03:30:07,789 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2022-01-31 03:30:07,789 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-31 03:30:07,790 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2022-01-31 03:30:07,790 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-01-31 03:30:07,790 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-01-31 03:30:07,790 INFO L130 BoogieDeclarations]: Found specification of procedure main [2022-01-31 03:30:07,790 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2022-01-31 03:30:07,790 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-01-31 03:30:07,790 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-31 03:30:07,790 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-01-31 03:30:07,790 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-01-31 03:30:07,790 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-01-31 03:30:07,834 INFO L234 CfgBuilder]: Building ICFG [2022-01-31 03:30:07,835 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-31 03:30:07,933 INFO L275 CfgBuilder]: Performing block encoding [2022-01-31 03:30:07,937 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-31 03:30:07,937 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-01-31 03:30:07,938 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.01 03:30:07 BoogieIcfgContainer [2022-01-31 03:30:07,938 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-31 03:30:07,939 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-31 03:30:07,939 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-31 03:30:07,941 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-31 03:30:07,941 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.01 03:30:07" (1/3) ... [2022-01-31 03:30:07,942 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@66807fdd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.01 03:30:07, skipping insertion in model container [2022-01-31 03:30:07,942 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 03:30:07" (2/3) ... [2022-01-31 03:30:07,942 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@66807fdd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.01 03:30:07, skipping insertion in model container [2022-01-31 03:30:07,942 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.01 03:30:07" (3/3) ... [2022-01-31 03:30:07,943 INFO L111 eAbstractionObserver]: Analyzing ICFG egcd-ll.c [2022-01-31 03:30:07,946 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-31 03:30:07,946 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-31 03:30:07,981 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-31 03:30:07,986 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2022-01-31 03:30:07,986 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-01-31 03:30:07,996 INFO L276 IsEmpty]: Start isEmpty. Operand has 34 states, 17 states have (on average 1.411764705882353) internal successors, (24), 18 states have internal predecessors, (24), 11 states have call successors, (11), 4 states have call predecessors, (11), 4 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2022-01-31 03:30:07,999 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-01-31 03:30:07,999 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 03:30:07,999 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 03:30:07,999 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 03:30:08,002 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 03:30:08,003 INFO L85 PathProgramCache]: Analyzing trace with hash -2012836591, now seen corresponding path program 1 times [2022-01-31 03:30:08,008 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-31 03:30:08,008 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2139294226] [2022-01-31 03:30:08,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 03:30:08,009 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 03:30:08,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 03:30:08,132 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 03:30:08,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 03:30:08,140 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-01-31 03:30:08,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 03:30:08,145 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-01-31 03:30:08,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 03:30:08,152 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-01-31 03:30:08,152 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-31 03:30:08,152 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2139294226] [2022-01-31 03:30:08,153 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2139294226] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 03:30:08,153 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 03:30:08,153 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-31 03:30:08,154 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [580195722] [2022-01-31 03:30:08,155 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 03:30:08,157 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-31 03:30:08,157 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-31 03:30:08,178 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-31 03:30:08,178 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-31 03:30:08,180 INFO L87 Difference]: Start difference. First operand has 34 states, 17 states have (on average 1.411764705882353) internal successors, (24), 18 states have internal predecessors, (24), 11 states have call successors, (11), 4 states have call predecessors, (11), 4 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) Second operand has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 2 states have internal predecessors, (11), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-01-31 03:30:08,257 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 03:30:08,257 INFO L93 Difference]: Finished difference Result 61 states and 93 transitions. [2022-01-31 03:30:08,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-31 03:30:08,260 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 2 states have internal predecessors, (11), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 22 [2022-01-31 03:30:08,260 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 03:30:08,264 INFO L225 Difference]: With dead ends: 61 [2022-01-31 03:30:08,264 INFO L226 Difference]: Without dead ends: 29 [2022-01-31 03:30:08,266 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-31 03:30:08,274 INFO L933 BasicCegarLoop]: 33 mSDtfsCounter, 17 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 36 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 03:30:08,275 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [26 Valid, 36 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 03:30:08,285 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2022-01-31 03:30:08,296 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2022-01-31 03:30:08,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 14 states have (on average 1.2142857142857142) internal successors, (17), 15 states have internal predecessors, (17), 11 states have call successors, (11), 4 states have call predecessors, (11), 3 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2022-01-31 03:30:08,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 37 transitions. [2022-01-31 03:30:08,299 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 37 transitions. Word has length 22 [2022-01-31 03:30:08,299 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 03:30:08,299 INFO L470 AbstractCegarLoop]: Abstraction has 29 states and 37 transitions. [2022-01-31 03:30:08,299 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 2 states have internal predecessors, (11), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-01-31 03:30:08,299 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 37 transitions. [2022-01-31 03:30:08,300 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-01-31 03:30:08,300 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 03:30:08,300 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 03:30:08,300 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-31 03:30:08,301 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 03:30:08,301 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 03:30:08,301 INFO L85 PathProgramCache]: Analyzing trace with hash 1952740121, now seen corresponding path program 1 times [2022-01-31 03:30:08,301 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-31 03:30:08,301 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [595527363] [2022-01-31 03:30:08,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 03:30:08,302 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 03:30:08,317 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-01-31 03:30:08,317 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2134971365] [2022-01-31 03:30:08,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 03:30:08,317 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-31 03:30:08,317 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-31 03:30:08,320 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-31 03:30:08,321 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-01-31 03:30:08,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 03:30:08,367 INFO L263 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 9 conjunts are in the unsatisfiable core [2022-01-31 03:30:08,371 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-31 03:30:08,456 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-01-31 03:30:08,457 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-31 03:30:08,457 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-31 03:30:08,457 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [595527363] [2022-01-31 03:30:08,457 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-01-31 03:30:08,458 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2134971365] [2022-01-31 03:30:08,458 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2134971365] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 03:30:08,458 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 03:30:08,458 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-31 03:30:08,459 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1010441527] [2022-01-31 03:30:08,459 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 03:30:08,459 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-31 03:30:08,459 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-31 03:30:08,460 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-31 03:30:08,460 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-31 03:30:08,460 INFO L87 Difference]: Start difference. First operand 29 states and 37 transitions. Second operand has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-01-31 03:30:08,528 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 03:30:08,528 INFO L93 Difference]: Finished difference Result 45 states and 60 transitions. [2022-01-31 03:30:08,528 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-31 03:30:08,529 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 22 [2022-01-31 03:30:08,529 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 03:30:08,530 INFO L225 Difference]: With dead ends: 45 [2022-01-31 03:30:08,530 INFO L226 Difference]: Without dead ends: 43 [2022-01-31 03:30:08,530 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-01-31 03:30:08,531 INFO L933 BasicCegarLoop]: 37 mSDtfsCounter, 7 mSDsluCounter, 98 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 135 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 03:30:08,532 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [13 Valid, 135 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 03:30:08,532 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2022-01-31 03:30:08,540 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 42. [2022-01-31 03:30:08,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42 states, 20 states have (on average 1.25) internal successors, (25), 22 states have internal predecessors, (25), 17 states have call successors, (17), 5 states have call predecessors, (17), 4 states have return successors, (15), 14 states have call predecessors, (15), 15 states have call successors, (15) [2022-01-31 03:30:08,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 57 transitions. [2022-01-31 03:30:08,541 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 57 transitions. Word has length 22 [2022-01-31 03:30:08,541 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 03:30:08,542 INFO L470 AbstractCegarLoop]: Abstraction has 42 states and 57 transitions. [2022-01-31 03:30:08,542 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-01-31 03:30:08,542 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 57 transitions. [2022-01-31 03:30:08,542 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-01-31 03:30:08,542 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 03:30:08,543 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 03:30:08,601 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-01-31 03:30:08,745 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-31 03:30:08,745 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 03:30:08,746 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 03:30:08,746 INFO L85 PathProgramCache]: Analyzing trace with hash 652987931, now seen corresponding path program 1 times [2022-01-31 03:30:08,746 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-31 03:30:08,746 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1371935001] [2022-01-31 03:30:08,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 03:30:08,747 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 03:30:08,756 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-01-31 03:30:08,757 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1954878851] [2022-01-31 03:30:08,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 03:30:08,757 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-31 03:30:08,757 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-31 03:30:08,758 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-31 03:30:08,759 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-01-31 03:30:08,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 03:30:08,792 INFO L263 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 14 conjunts are in the unsatisfiable core [2022-01-31 03:30:08,794 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-31 03:30:08,931 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-31 03:30:08,931 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-31 03:30:08,931 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-31 03:30:08,931 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1371935001] [2022-01-31 03:30:08,931 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-01-31 03:30:08,933 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1954878851] [2022-01-31 03:30:08,933 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1954878851] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 03:30:08,933 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 03:30:08,933 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-31 03:30:08,933 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1832450006] [2022-01-31 03:30:08,933 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 03:30:08,934 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-31 03:30:08,934 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-31 03:30:08,934 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-31 03:30:08,936 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-01-31 03:30:08,936 INFO L87 Difference]: Start difference. First operand 42 states and 57 transitions. Second operand has 8 states, 8 states have (on average 2.125) internal successors, (17), 6 states have internal predecessors, (17), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 03:30:09,024 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 03:30:09,024 INFO L93 Difference]: Finished difference Result 49 states and 63 transitions. [2022-01-31 03:30:09,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-31 03:30:09,025 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 6 states have internal predecessors, (17), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) Word has length 27 [2022-01-31 03:30:09,025 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 03:30:09,026 INFO L225 Difference]: With dead ends: 49 [2022-01-31 03:30:09,027 INFO L226 Difference]: Without dead ends: 47 [2022-01-31 03:30:09,027 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2022-01-31 03:30:09,030 INFO L933 BasicCegarLoop]: 35 mSDtfsCounter, 20 mSDsluCounter, 142 mSDsCounter, 0 mSdLazyCounter, 81 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 177 SdHoareTripleChecker+Invalid, 88 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 81 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 03:30:09,032 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [31 Valid, 177 Invalid, 88 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 81 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 03:30:09,033 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2022-01-31 03:30:09,048 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 46. [2022-01-31 03:30:09,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46 states, 23 states have (on average 1.2173913043478262) internal successors, (28), 25 states have internal predecessors, (28), 17 states have call successors, (17), 6 states have call predecessors, (17), 5 states have return successors, (15), 14 states have call predecessors, (15), 15 states have call successors, (15) [2022-01-31 03:30:09,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 60 transitions. [2022-01-31 03:30:09,049 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 60 transitions. Word has length 27 [2022-01-31 03:30:09,049 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 03:30:09,050 INFO L470 AbstractCegarLoop]: Abstraction has 46 states and 60 transitions. [2022-01-31 03:30:09,050 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 6 states have internal predecessors, (17), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 03:30:09,050 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 60 transitions. [2022-01-31 03:30:09,050 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-01-31 03:30:09,050 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 03:30:09,050 INFO L514 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 03:30:09,067 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-01-31 03:30:09,259 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2022-01-31 03:30:09,259 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 03:30:09,260 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 03:30:09,260 INFO L85 PathProgramCache]: Analyzing trace with hash 1028398105, now seen corresponding path program 1 times [2022-01-31 03:30:09,260 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-31 03:30:09,260 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [820412455] [2022-01-31 03:30:09,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 03:30:09,261 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 03:30:09,269 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-01-31 03:30:09,269 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1991745130] [2022-01-31 03:30:09,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 03:30:09,270 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-31 03:30:09,270 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-31 03:30:09,277 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-31 03:30:09,278 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-01-31 03:30:09,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 03:30:09,312 INFO L263 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 14 conjunts are in the unsatisfiable core [2022-01-31 03:30:09,314 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-31 03:30:09,437 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 3 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-01-31 03:30:09,437 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-31 03:30:09,531 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-01-31 03:30:09,532 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-31 03:30:09,533 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [820412455] [2022-01-31 03:30:09,533 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-01-31 03:30:09,533 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1991745130] [2022-01-31 03:30:09,533 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1991745130] provided 1 perfect and 1 imperfect interpolant sequences [2022-01-31 03:30:09,533 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-01-31 03:30:09,534 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [8] total 9 [2022-01-31 03:30:09,534 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [95828163] [2022-01-31 03:30:09,534 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 03:30:09,534 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-31 03:30:09,535 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-31 03:30:09,535 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-31 03:30:09,536 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2022-01-31 03:30:09,536 INFO L87 Difference]: Start difference. First operand 46 states and 60 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, (7), 2 states have call predecessors, (7), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-31 03:30:09,577 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 03:30:09,577 INFO L93 Difference]: Finished difference Result 71 states and 100 transitions. [2022-01-31 03:30:09,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-31 03:30:09,578 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, (7), 2 states have call predecessors, (7), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 32 [2022-01-31 03:30:09,578 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 03:30:09,581 INFO L225 Difference]: With dead ends: 71 [2022-01-31 03:30:09,581 INFO L226 Difference]: Without dead ends: 67 [2022-01-31 03:30:09,581 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 55 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2022-01-31 03:30:09,582 INFO L933 BasicCegarLoop]: 39 mSDtfsCounter, 8 mSDsluCounter, 97 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 136 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-31 03:30:09,582 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [12 Valid, 136 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-31 03:30:09,583 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2022-01-31 03:30:09,590 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 67. [2022-01-31 03:30:09,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67 states, 32 states have (on average 1.28125) internal successors, (41), 36 states have internal predecessors, (41), 28 states have call successors, (28), 7 states have call predecessors, (28), 6 states have return successors, (24), 23 states have call predecessors, (24), 24 states have call successors, (24) [2022-01-31 03:30:09,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 93 transitions. [2022-01-31 03:30:09,592 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 93 transitions. Word has length 32 [2022-01-31 03:30:09,592 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 03:30:09,592 INFO L470 AbstractCegarLoop]: Abstraction has 67 states and 93 transitions. [2022-01-31 03:30:09,593 INFO L471 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, (7), 2 states have call predecessors, (7), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-31 03:30:09,593 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 93 transitions. [2022-01-31 03:30:09,593 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2022-01-31 03:30:09,593 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 03:30:09,594 INFO L514 BasicCegarLoop]: trace histogram [4, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 03:30:09,612 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-01-31 03:30:09,799 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-31 03:30:09,799 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 03:30:09,801 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 03:30:09,801 INFO L85 PathProgramCache]: Analyzing trace with hash -134474469, now seen corresponding path program 1 times [2022-01-31 03:30:09,801 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-31 03:30:09,801 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [713063989] [2022-01-31 03:30:09,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 03:30:09,802 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 03:30:09,829 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-01-31 03:30:09,829 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [172384058] [2022-01-31 03:30:09,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 03:30:09,830 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-31 03:30:09,830 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-31 03:30:09,831 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-31 03:30:09,833 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-01-31 03:30:09,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 03:30:09,867 INFO L263 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 5 conjunts are in the unsatisfiable core [2022-01-31 03:30:09,868 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-31 03:30:09,938 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-01-31 03:30:09,939 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-31 03:30:09,939 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-31 03:30:09,939 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [713063989] [2022-01-31 03:30:09,939 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-01-31 03:30:09,939 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [172384058] [2022-01-31 03:30:09,940 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [172384058] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 03:30:09,940 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 03:30:09,940 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-31 03:30:09,940 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [958937903] [2022-01-31 03:30:09,940 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 03:30:09,940 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-31 03:30:09,940 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-31 03:30:09,941 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-31 03:30:09,941 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-31 03:30:09,941 INFO L87 Difference]: Start difference. First operand 67 states and 93 transitions. Second operand has 5 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2022-01-31 03:30:09,979 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 03:30:09,979 INFO L93 Difference]: Finished difference Result 73 states and 98 transitions. [2022-01-31 03:30:09,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-31 03:30:09,980 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) Word has length 38 [2022-01-31 03:30:09,981 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 03:30:09,982 INFO L225 Difference]: With dead ends: 73 [2022-01-31 03:30:09,982 INFO L226 Difference]: Without dead ends: 71 [2022-01-31 03:30:09,983 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-01-31 03:30:09,983 INFO L933 BasicCegarLoop]: 37 mSDtfsCounter, 5 mSDsluCounter, 90 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 127 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-31 03:30:09,984 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8 Valid, 127 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-31 03:30:09,985 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2022-01-31 03:30:10,000 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 71. [2022-01-31 03:30:10,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71 states, 35 states have (on average 1.2571428571428571) internal successors, (44), 39 states have internal predecessors, (44), 28 states have call successors, (28), 8 states have call predecessors, (28), 7 states have return successors, (24), 23 states have call predecessors, (24), 24 states have call successors, (24) [2022-01-31 03:30:10,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 96 transitions. [2022-01-31 03:30:10,006 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 96 transitions. Word has length 38 [2022-01-31 03:30:10,007 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 03:30:10,007 INFO L470 AbstractCegarLoop]: Abstraction has 71 states and 96 transitions. [2022-01-31 03:30:10,007 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2022-01-31 03:30:10,009 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 96 transitions. [2022-01-31 03:30:10,010 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2022-01-31 03:30:10,010 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 03:30:10,011 INFO L514 BasicCegarLoop]: trace histogram [4, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 03:30:10,027 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-01-31 03:30:10,215 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-31 03:30:10,215 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 03:30:10,216 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 03:30:10,216 INFO L85 PathProgramCache]: Analyzing trace with hash 251096952, now seen corresponding path program 1 times [2022-01-31 03:30:10,216 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-31 03:30:10,216 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [734960378] [2022-01-31 03:30:10,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 03:30:10,216 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 03:30:10,240 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-01-31 03:30:10,240 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [419691138] [2022-01-31 03:30:10,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 03:30:10,240 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-31 03:30:10,244 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-31 03:30:10,245 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-31 03:30:10,246 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-01-31 03:30:10,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 03:30:10,279 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 11 conjunts are in the unsatisfiable core [2022-01-31 03:30:10,283 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-31 03:30:10,393 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-01-31 03:30:10,393 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-31 03:30:10,393 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-31 03:30:10,393 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [734960378] [2022-01-31 03:30:10,394 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-01-31 03:30:10,394 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [419691138] [2022-01-31 03:30:10,394 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [419691138] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 03:30:10,394 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 03:30:10,394 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-31 03:30:10,394 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1804583001] [2022-01-31 03:30:10,394 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 03:30:10,399 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-31 03:30:10,399 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-31 03:30:10,399 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-31 03:30:10,400 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-31 03:30:10,400 INFO L87 Difference]: Start difference. First operand 71 states and 96 transitions. Second operand has 5 states, 5 states have (on average 3.2) internal successors, (16), 4 states have internal predecessors, (16), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-01-31 03:30:10,433 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 03:30:10,433 INFO L93 Difference]: Finished difference Result 81 states and 104 transitions. [2022-01-31 03:30:10,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-31 03:30:10,433 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 4 states have internal predecessors, (16), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 40 [2022-01-31 03:30:10,434 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 03:30:10,434 INFO L225 Difference]: With dead ends: 81 [2022-01-31 03:30:10,434 INFO L226 Difference]: Without dead ends: 78 [2022-01-31 03:30:10,435 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 35 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-01-31 03:30:10,435 INFO L933 BasicCegarLoop]: 38 mSDtfsCounter, 6 mSDsluCounter, 100 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 138 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-31 03:30:10,435 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8 Valid, 138 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-31 03:30:10,436 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2022-01-31 03:30:10,442 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 76. [2022-01-31 03:30:10,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76 states, 41 states have (on average 1.2195121951219512) internal successors, (50), 44 states have internal predecessors, (50), 25 states have call successors, (25), 10 states have call predecessors, (25), 9 states have return successors, (22), 21 states have call predecessors, (22), 22 states have call successors, (22) [2022-01-31 03:30:10,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 97 transitions. [2022-01-31 03:30:10,443 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 97 transitions. Word has length 40 [2022-01-31 03:30:10,443 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 03:30:10,444 INFO L470 AbstractCegarLoop]: Abstraction has 76 states and 97 transitions. [2022-01-31 03:30:10,444 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 4 states have internal predecessors, (16), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-01-31 03:30:10,444 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 97 transitions. [2022-01-31 03:30:10,444 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2022-01-31 03:30:10,444 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 03:30:10,445 INFO L514 BasicCegarLoop]: trace histogram [5, 4, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 03:30:10,463 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-01-31 03:30:10,645 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-31 03:30:10,645 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 03:30:10,646 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 03:30:10,646 INFO L85 PathProgramCache]: Analyzing trace with hash -1098226535, now seen corresponding path program 1 times [2022-01-31 03:30:10,646 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-31 03:30:10,646 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [703737232] [2022-01-31 03:30:10,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 03:30:10,646 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 03:30:10,657 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-01-31 03:30:10,657 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1075015118] [2022-01-31 03:30:10,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 03:30:10,657 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-31 03:30:10,657 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-31 03:30:10,658 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-31 03:30:10,667 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-01-31 03:30:10,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 03:30:10,694 INFO L263 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 10 conjunts are in the unsatisfiable core [2022-01-31 03:30:10,695 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-31 03:30:10,786 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 10 proven. 7 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-01-31 03:30:10,786 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-31 03:30:10,901 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 10 proven. 7 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-01-31 03:30:10,901 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-31 03:30:10,901 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [703737232] [2022-01-31 03:30:10,901 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-01-31 03:30:10,901 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1075015118] [2022-01-31 03:30:10,902 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1075015118] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-31 03:30:10,902 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-01-31 03:30:10,902 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 9 [2022-01-31 03:30:10,902 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1926769817] [2022-01-31 03:30:10,902 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-01-31 03:30:10,902 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-01-31 03:30:10,902 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-31 03:30:10,903 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-01-31 03:30:10,903 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2022-01-31 03:30:10,903 INFO L87 Difference]: Start difference. First operand 76 states and 97 transitions. Second operand has 9 states, 8 states have (on average 2.5) internal successors, (20), 7 states have internal predecessors, (20), 3 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-01-31 03:30:11,000 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 03:30:11,000 INFO L93 Difference]: Finished difference Result 85 states and 107 transitions. [2022-01-31 03:30:11,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-31 03:30:11,001 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.5) internal successors, (20), 7 states have internal predecessors, (20), 3 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 43 [2022-01-31 03:30:11,001 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 03:30:11,002 INFO L225 Difference]: With dead ends: 85 [2022-01-31 03:30:11,002 INFO L226 Difference]: Without dead ends: 81 [2022-01-31 03:30:11,002 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 77 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2022-01-31 03:30:11,003 INFO L933 BasicCegarLoop]: 26 mSDtfsCounter, 14 mSDsluCounter, 119 mSDsCounter, 0 mSdLazyCounter, 108 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 145 SdHoareTripleChecker+Invalid, 119 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 108 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 03:30:11,003 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [15 Valid, 145 Invalid, 119 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 108 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 03:30:11,003 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2022-01-31 03:30:11,009 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 81. [2022-01-31 03:30:11,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 81 states, 45 states have (on average 1.1555555555555554) internal successors, (52), 48 states have internal predecessors, (52), 25 states have call successors, (25), 11 states have call predecessors, (25), 10 states have return successors, (23), 21 states have call predecessors, (23), 23 states have call successors, (23) [2022-01-31 03:30:11,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 100 transitions. [2022-01-31 03:30:11,010 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 100 transitions. Word has length 43 [2022-01-31 03:30:11,010 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 03:30:11,010 INFO L470 AbstractCegarLoop]: Abstraction has 81 states and 100 transitions. [2022-01-31 03:30:11,011 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 2.5) internal successors, (20), 7 states have internal predecessors, (20), 3 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-01-31 03:30:11,011 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 100 transitions. [2022-01-31 03:30:11,011 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2022-01-31 03:30:11,011 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 03:30:11,011 INFO L514 BasicCegarLoop]: trace histogram [5, 4, 4, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 03:30:11,030 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-01-31 03:30:11,230 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-31 03:30:11,230 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 03:30:11,230 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 03:30:11,231 INFO L85 PathProgramCache]: Analyzing trace with hash -17648356, now seen corresponding path program 2 times [2022-01-31 03:30:11,231 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-31 03:30:11,231 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [770157742] [2022-01-31 03:30:11,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 03:30:11,231 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 03:30:11,240 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-01-31 03:30:11,240 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [409241103] [2022-01-31 03:30:11,240 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-31 03:30:11,240 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-31 03:30:11,240 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-31 03:30:11,242 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-31 03:30:11,243 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-01-31 03:30:11,277 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-31 03:30:11,277 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-31 03:30:11,278 INFO L263 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 23 conjunts are in the unsatisfiable core [2022-01-31 03:30:11,280 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-31 03:30:11,439 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 8 proven. 3 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2022-01-31 03:30:11,440 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-31 03:30:11,530 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 8 proven. 3 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2022-01-31 03:30:11,530 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-31 03:30:11,530 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [770157742] [2022-01-31 03:30:11,531 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-01-31 03:30:11,531 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [409241103] [2022-01-31 03:30:11,531 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [409241103] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-31 03:30:11,531 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-01-31 03:30:11,531 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 8 [2022-01-31 03:30:11,531 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [699786576] [2022-01-31 03:30:11,531 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-01-31 03:30:11,531 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-31 03:30:11,531 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-31 03:30:11,532 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-31 03:30:11,532 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-01-31 03:30:11,532 INFO L87 Difference]: Start difference. First operand 81 states and 100 transitions. Second operand has 8 states, 8 states have (on average 2.75) internal successors, (22), 7 states have internal predecessors, (22), 5 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (11), 5 states have call predecessors, (11), 5 states have call successors, (11) [2022-01-31 03:30:11,877 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 03:30:11,877 INFO L93 Difference]: Finished difference Result 107 states and 136 transitions. [2022-01-31 03:30:11,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-31 03:30:11,877 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.75) internal successors, (22), 7 states have internal predecessors, (22), 5 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (11), 5 states have call predecessors, (11), 5 states have call successors, (11) Word has length 45 [2022-01-31 03:30:11,878 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 03:30:11,878 INFO L225 Difference]: With dead ends: 107 [2022-01-31 03:30:11,878 INFO L226 Difference]: Without dead ends: 100 [2022-01-31 03:30:11,879 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 82 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2022-01-31 03:30:11,879 INFO L933 BasicCegarLoop]: 38 mSDtfsCounter, 12 mSDsluCounter, 171 mSDsCounter, 0 mSdLazyCounter, 97 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 209 SdHoareTripleChecker+Invalid, 131 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 97 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-31 03:30:11,879 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [12 Valid, 209 Invalid, 131 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 97 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-31 03:30:11,880 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2022-01-31 03:30:11,887 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 85. [2022-01-31 03:30:11,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 85 states, 51 states have (on average 1.1176470588235294) internal successors, (57), 53 states have internal predecessors, (57), 21 states have call successors, (21), 13 states have call predecessors, (21), 12 states have return successors, (19), 18 states have call predecessors, (19), 19 states have call successors, (19) [2022-01-31 03:30:11,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 97 transitions. [2022-01-31 03:30:11,888 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 97 transitions. Word has length 45 [2022-01-31 03:30:11,888 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 03:30:11,888 INFO L470 AbstractCegarLoop]: Abstraction has 85 states and 97 transitions. [2022-01-31 03:30:11,888 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.75) internal successors, (22), 7 states have internal predecessors, (22), 5 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (11), 5 states have call predecessors, (11), 5 states have call successors, (11) [2022-01-31 03:30:11,888 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 97 transitions. [2022-01-31 03:30:11,889 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2022-01-31 03:30:11,889 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 03:30:11,889 INFO L514 BasicCegarLoop]: trace histogram [7, 6, 6, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 03:30:11,907 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-01-31 03:30:12,105 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-31 03:30:12,105 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 03:30:12,106 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 03:30:12,106 INFO L85 PathProgramCache]: Analyzing trace with hash -152607915, now seen corresponding path program 1 times [2022-01-31 03:30:12,106 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-31 03:30:12,106 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1197457314] [2022-01-31 03:30:12,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 03:30:12,106 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 03:30:12,113 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-01-31 03:30:12,113 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1607595882] [2022-01-31 03:30:12,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 03:30:12,113 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-31 03:30:12,113 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-31 03:30:12,115 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-31 03:30:12,116 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-01-31 03:30:12,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 03:30:12,151 INFO L263 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 19 conjunts are in the unsatisfiable core [2022-01-31 03:30:12,154 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-31 03:30:12,338 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 12 proven. 10 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2022-01-31 03:30:12,338 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-31 03:30:12,457 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2022-01-31 03:30:12,457 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-31 03:30:12,457 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1197457314] [2022-01-31 03:30:12,458 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-01-31 03:30:12,458 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1607595882] [2022-01-31 03:30:12,458 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1607595882] provided 1 perfect and 1 imperfect interpolant sequences [2022-01-31 03:30:12,458 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-01-31 03:30:12,458 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 8 [2022-01-31 03:30:12,458 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1304473375] [2022-01-31 03:30:12,458 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 03:30:12,458 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-31 03:30:12,458 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-31 03:30:12,459 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-31 03:30:12,459 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-01-31 03:30:12,459 INFO L87 Difference]: Start difference. First operand 85 states and 97 transitions. Second operand has 5 states, 5 states have (on average 3.4) internal successors, (17), 4 states have internal predecessors, (17), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-01-31 03:30:12,494 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 03:30:12,494 INFO L93 Difference]: Finished difference Result 85 states and 97 transitions. [2022-01-31 03:30:12,494 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-31 03:30:12,494 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.4) internal successors, (17), 4 states have internal predecessors, (17), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 58 [2022-01-31 03:30:12,495 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 03:30:12,495 INFO L225 Difference]: With dead ends: 85 [2022-01-31 03:30:12,495 INFO L226 Difference]: Without dead ends: 0 [2022-01-31 03:30:12,495 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 106 SyntacticMatches, 3 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2022-01-31 03:30:12,496 INFO L933 BasicCegarLoop]: 28 mSDtfsCounter, 6 mSDsluCounter, 70 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 98 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-31 03:30:12,496 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8 Valid, 98 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-31 03:30:12,496 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-01-31 03:30:12,496 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-01-31 03:30:12,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-31 03:30:12,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-01-31 03:30:12,497 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 58 [2022-01-31 03:30:12,497 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 03:30:12,497 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-01-31 03:30:12,497 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.4) internal successors, (17), 4 states have internal predecessors, (17), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-01-31 03:30:12,497 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-01-31 03:30:12,497 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-01-31 03:30:12,499 INFO L764 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-01-31 03:30:12,523 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-01-31 03:30:12,715 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2022-01-31 03:30:12,717 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2022-01-31 03:30:18,334 INFO L858 garLoopResultBuilder]: For program point reach_errorEXIT(line 4) no Hoare annotation was computed. [2022-01-31 03:30:18,335 INFO L858 garLoopResultBuilder]: For program point reach_errorENTRY(line 4) no Hoare annotation was computed. [2022-01-31 03:30:18,335 INFO L858 garLoopResultBuilder]: For program point reach_errorFINAL(line 4) no Hoare annotation was computed. [2022-01-31 03:30:18,335 INFO L861 garLoopResultBuilder]: At program point assume_abort_if_notENTRY(lines 7 9) the Hoare annotation is: true [2022-01-31 03:30:18,335 INFO L858 garLoopResultBuilder]: For program point L8(line 8) no Hoare annotation was computed. [2022-01-31 03:30:18,335 INFO L858 garLoopResultBuilder]: For program point L8-2(lines 7 9) no Hoare annotation was computed. [2022-01-31 03:30:18,335 INFO L858 garLoopResultBuilder]: For program point assume_abort_if_notEXIT(lines 7 9) no Hoare annotation was computed. [2022-01-31 03:30:18,335 INFO L854 garLoopResultBuilder]: At program point L33-2(lines 33 50) the Hoare annotation is: (let ((.cse0 (* main_~y~0 main_~r~0)) (.cse1 (* main_~p~0 main_~x~0))) (let ((.cse2 (+ .cse0 .cse1))) (and (= (+ (* main_~q~0 main_~x~0) main_~a~0 (* main_~y~0 main_~s~0)) (+ .cse0 main_~b~0 .cse1)) (= main_~b~0 .cse2) (= main_~a~0 .cse2) (<= 1 main_~y~0) (= (* main_~p~0 main_~s~0) (+ (* main_~q~0 main_~r~0) 1))))) [2022-01-31 03:30:18,335 INFO L858 garLoopResultBuilder]: For program point mainEXIT(lines 18 57) no Hoare annotation was computed. [2022-01-31 03:30:18,335 INFO L861 garLoopResultBuilder]: At program point L23(line 23) the Hoare annotation is: true [2022-01-31 03:30:18,335 INFO L861 garLoopResultBuilder]: At program point L23-1(line 23) the Hoare annotation is: true [2022-01-31 03:30:18,335 INFO L854 garLoopResultBuilder]: At program point L54(line 54) the Hoare annotation is: (and (= main_~b~0 (+ (* main_~q~0 main_~x~0) (* main_~y~0 main_~s~0))) (<= 1 main_~y~0)) [2022-01-31 03:30:18,336 INFO L854 garLoopResultBuilder]: At program point L52(line 52) the Hoare annotation is: (let ((.cse0 (* main_~y~0 main_~r~0)) (.cse1 (* main_~p~0 main_~x~0))) (let ((.cse2 (+ .cse0 .cse1))) (and (= (+ (* main_~q~0 main_~x~0) main_~a~0 (* main_~y~0 main_~s~0)) (+ .cse0 main_~b~0 .cse1)) (= main_~b~0 .cse2) (= main_~a~0 .cse2) (<= 1 main_~y~0) (= (* main_~p~0 main_~s~0) (+ (* main_~q~0 main_~r~0) 1))))) [2022-01-31 03:30:18,336 INFO L858 garLoopResultBuilder]: For program point mainFINAL(lines 18 57) no Hoare annotation was computed. [2022-01-31 03:30:18,336 INFO L858 garLoopResultBuilder]: For program point L36(lines 33 50) no Hoare annotation was computed. [2022-01-31 03:30:18,336 INFO L854 garLoopResultBuilder]: At program point L34(line 34) the Hoare annotation is: (let ((.cse0 (* main_~y~0 main_~r~0)) (.cse1 (* main_~p~0 main_~x~0))) (and (= (+ (* main_~q~0 main_~x~0) main_~a~0 (* main_~y~0 main_~s~0)) (+ .cse0 main_~b~0 .cse1)) (= main_~a~0 (+ .cse0 .cse1)) (<= 1 main_~y~0) (= (* main_~p~0 main_~s~0) (+ (* main_~q~0 main_~r~0) 1)))) [2022-01-31 03:30:18,336 INFO L854 garLoopResultBuilder]: At program point L34-1(line 34) the Hoare annotation is: (let ((.cse0 (* main_~y~0 main_~r~0)) (.cse1 (* main_~p~0 main_~x~0))) (and (= (+ (* main_~q~0 main_~x~0) main_~a~0 (* main_~y~0 main_~s~0)) (+ .cse0 main_~b~0 .cse1)) (= main_~a~0 (+ .cse0 .cse1)) (<= 1 main_~y~0) (= (* main_~p~0 main_~s~0) (+ (* main_~q~0 main_~r~0) 1)))) [2022-01-31 03:30:18,336 INFO L861 garLoopResultBuilder]: At program point mainENTRY(lines 18 57) the Hoare annotation is: true [2022-01-31 03:30:18,336 INFO L858 garLoopResultBuilder]: For program point L24(line 24) no Hoare annotation was computed. [2022-01-31 03:30:18,336 INFO L858 garLoopResultBuilder]: For program point L55(line 55) no Hoare annotation was computed. [2022-01-31 03:30:18,336 INFO L854 garLoopResultBuilder]: At program point L53(line 53) the Hoare annotation is: (let ((.cse4 (* main_~q~0 main_~x~0)) (.cse5 (* main_~y~0 main_~s~0))) (let ((.cse0 (= main_~b~0 (+ .cse4 .cse5))) (.cse1 (= main_~s~0 1)) (.cse3 (= main_~p~0 1)) (.cse2 (<= 1 main_~y~0))) (or (and (= main_~r~0 0) .cse0 .cse1 .cse2 (= main_~a~0 main_~x~0) .cse3) (and (= main_~b~0 main_~a~0) .cse0 .cse1 (= main_~q~0 0) .cse2 .cse3) (let ((.cse6 (* main_~y~0 main_~r~0)) (.cse7 (* main_~p~0 main_~x~0))) (let ((.cse8 (+ .cse6 .cse7))) (and (= (+ .cse4 main_~a~0 .cse5) (+ .cse6 main_~b~0 .cse7)) (= main_~b~0 .cse8) (= main_~a~0 .cse8) .cse2 (= (* main_~p~0 main_~s~0) (+ (* main_~q~0 main_~r~0) 1)))))))) [2022-01-31 03:30:18,336 INFO L858 garLoopResultBuilder]: For program point L41(lines 41 49) no Hoare annotation was computed. [2022-01-31 03:30:18,336 INFO L854 garLoopResultBuilder]: At program point L41-2(lines 33 50) the Hoare annotation is: (let ((.cse0 (* main_~y~0 main_~r~0)) (.cse1 (* main_~p~0 main_~x~0))) (and (= (+ (* main_~q~0 main_~x~0) main_~a~0 (* main_~y~0 main_~s~0)) (+ .cse0 main_~b~0 .cse1)) (= main_~a~0 (+ .cse0 .cse1)) (<= 1 main_~y~0) (= (* main_~p~0 main_~s~0) (+ (* main_~q~0 main_~r~0) 1)))) [2022-01-31 03:30:18,337 INFO L854 garLoopResultBuilder]: At program point L35(line 35) the Hoare annotation is: (let ((.cse0 (* main_~y~0 main_~r~0)) (.cse1 (* main_~p~0 main_~x~0))) (and (= (+ (* main_~q~0 main_~x~0) main_~a~0 (* main_~y~0 main_~s~0)) (+ .cse0 main_~b~0 .cse1)) (= main_~a~0 (+ .cse0 .cse1)) (<= 1 main_~y~0) (= (* main_~p~0 main_~s~0) (+ (* main_~q~0 main_~r~0) 1)))) [2022-01-31 03:30:18,337 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2022-01-31 03:30:18,337 INFO L854 garLoopResultBuilder]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|)) [2022-01-31 03:30:18,337 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2022-01-31 03:30:18,337 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2022-01-31 03:30:18,337 INFO L861 garLoopResultBuilder]: At program point L-1(line -1) the Hoare annotation is: true [2022-01-31 03:30:18,337 INFO L861 garLoopResultBuilder]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2022-01-31 03:30:18,337 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2022-01-31 03:30:18,337 INFO L861 garLoopResultBuilder]: At program point __VERIFIER_assertENTRY(lines 10 16) the Hoare annotation is: true [2022-01-31 03:30:18,337 INFO L858 garLoopResultBuilder]: For program point L12(lines 12 13) no Hoare annotation was computed. [2022-01-31 03:30:18,337 INFO L858 garLoopResultBuilder]: For program point L11(lines 11 14) no Hoare annotation was computed. [2022-01-31 03:30:18,337 INFO L858 garLoopResultBuilder]: For program point __VERIFIER_assertEXIT(lines 10 16) no Hoare annotation was computed. [2022-01-31 03:30:18,337 INFO L858 garLoopResultBuilder]: For program point L11-2(lines 10 16) no Hoare annotation was computed. [2022-01-31 03:30:18,337 INFO L858 garLoopResultBuilder]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 13) no Hoare annotation was computed. [2022-01-31 03:30:18,340 INFO L732 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 03:30:18,340 INFO L180 ceAbstractionStarter]: Computing trace abstraction results [2022-01-31 03:30:18,356 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 31.01 03:30:18 BoogieIcfgContainer [2022-01-31 03:30:18,356 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-01-31 03:30:18,357 INFO L158 Benchmark]: Toolchain (without parser) took 10816.29ms. Allocated memory was 204.5MB in the beginning and 264.2MB in the end (delta: 59.8MB). Free memory was 154.8MB in the beginning and 175.6MB in the end (delta: -20.8MB). Peak memory consumption was 38.5MB. Max. memory is 8.0GB. [2022-01-31 03:30:18,357 INFO L158 Benchmark]: CDTParser took 0.13ms. Allocated memory is still 204.5MB. Free memory was 171.3MB in the beginning and 171.2MB in the end (delta: 143.4kB). There was no memory consumed. Max. memory is 8.0GB. [2022-01-31 03:30:18,358 INFO L158 Benchmark]: CACSL2BoogieTranslator took 171.95ms. Allocated memory is still 204.5MB. Free memory was 154.7MB in the beginning and 181.2MB in the end (delta: -26.5MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. [2022-01-31 03:30:18,358 INFO L158 Benchmark]: Boogie Preprocessor took 16.75ms. Allocated memory is still 204.5MB. Free memory was 181.2MB in the beginning and 179.6MB in the end (delta: 1.6MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-01-31 03:30:18,358 INFO L158 Benchmark]: RCFGBuilder took 207.14ms. Allocated memory is still 204.5MB. Free memory was 179.6MB in the beginning and 168.6MB in the end (delta: 11.1MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. [2022-01-31 03:30:18,358 INFO L158 Benchmark]: TraceAbstraction took 10417.38ms. Allocated memory was 204.5MB in the beginning and 264.2MB in the end (delta: 59.8MB). Free memory was 168.1MB in the beginning and 175.6MB in the end (delta: -7.5MB). Peak memory consumption was 53.7MB. Max. memory is 8.0GB. [2022-01-31 03:30:18,360 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13ms. Allocated memory is still 204.5MB. Free memory was 171.3MB in the beginning and 171.2MB in the end (delta: 143.4kB). There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 171.95ms. Allocated memory is still 204.5MB. Free memory was 154.7MB in the beginning and 181.2MB in the end (delta: -26.5MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. * Boogie Preprocessor took 16.75ms. Allocated memory is still 204.5MB. Free memory was 181.2MB in the beginning and 179.6MB in the end (delta: 1.6MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 207.14ms. Allocated memory is still 204.5MB. Free memory was 179.6MB in the beginning and 168.6MB in the end (delta: 11.1MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. * TraceAbstraction took 10417.38ms. Allocated memory was 204.5MB in the beginning and 264.2MB in the end (delta: 59.8MB). Free memory was 168.1MB in the beginning and 175.6MB in the end (delta: -7.5MB). Peak memory consumption was 53.7MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 13]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 37 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 10.4s, OverallIterations: 9, TraceHistogramMax: 7, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 0.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 5.6s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 133 SdHoareTripleChecker+Valid, 0.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 95 mSDsluCounter, 1201 SdHoareTripleChecker+Invalid, 0.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 890 mSDsCounter, 67 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 432 IncrementalHoareTripleChecker+Invalid, 499 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 67 mSolverCounterUnsat, 311 mSDtfsCounter, 432 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 498 GetRequests, 436 SyntacticMatches, 7 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=85occurred in iteration=8, InterpolantAutomatonStates: 51, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 9 MinimizatonAttempts, 19 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 16 LocationsWithAnnotation, 51 PreInvPairs, 84 NumberOfFragments, 378 HoareAnnotationTreeSize, 51 FomulaSimplifications, 136 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 16 FomulaSimplificationsInter, 1838 FormulaSimplificationTreeSizeReductionInter, 5.6s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.5s InterpolantComputationTime, 327 NumberOfCodeBlocks, 327 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 492 ConstructedInterpolants, 0 QuantifiedInterpolants, 1506 SizeOfPredicates, 16 NumberOfNonLiveVariables, 943 ConjunctsInSsa, 105 ConjunctsInUnsatCore, 13 InterpolantComputations, 7 PerfectInterpolantSequences, 373/406 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 33]: Loop Invariant Derived loop invariant: ((q * x + a + y * s == y * r + b + p * x && a == y * r + p * x) && 1 <= y) && p * s == q * r + 1 RESULT: Ultimate proved your program to be correct! [2022-01-31 03:30:18,380 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...