/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data --core.log.level.for.class de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationQvasr_64.epf -i ../../../trunk/examples/svcomp/nla-digbench-scaling/hard-ll_valuebound1.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-7968f31 [2022-03-18 03:19:05,640 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-03-18 03:19:05,654 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-03-18 03:19:05,699 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-03-18 03:19:05,734 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-03-18 03:19:05,734 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-03-18 03:19:05,736 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-03-18 03:19:05,737 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationQvasr_64.epf [2022-03-18 03:19:05,746 INFO L113 SettingsManager]: Loading preferences was successful [2022-03-18 03:19:05,746 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-03-18 03:19:05,748 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-03-18 03:19:05,748 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-03-18 03:19:05,748 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-03-18 03:19:05,748 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-03-18 03:19:05,748 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-03-18 03:19:05,748 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-03-18 03:19:05,748 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-03-18 03:19:05,749 INFO L138 SettingsManager]: * Use constant arrays=true [2022-03-18 03:19:05,749 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-03-18 03:19:05,749 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-03-18 03:19:05,749 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-03-18 03:19:05,749 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-03-18 03:19:05,750 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-03-18 03:19:05,750 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-03-18 03:19:05,750 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-03-18 03:19:05,750 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_NestedInterpolation [2022-03-18 03:19:05,750 INFO L138 SettingsManager]: * Trace refinement strategy=ACCELERATED_INTERPOLATION [2022-03-18 03:19:05,750 INFO L138 SettingsManager]: * Trace refinement strategy used in Accelerated Interpolation=CAMEL [2022-03-18 03:19:05,750 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-03-18 03:19:05,750 INFO L138 SettingsManager]: * Loop acceleration method that is used by accelerated interpolation=QVASR [2022-03-18 03:19:05,750 INFO L138 SettingsManager]: * Use separate solver for trace checks=false WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-03-18 03:19:05,923 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-03-18 03:19:05,939 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-03-18 03:19:05,941 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-03-18 03:19:05,941 INFO L271 PluginConnector]: Initializing CDTParser... [2022-03-18 03:19:05,943 INFO L275 PluginConnector]: CDTParser initialized [2022-03-18 03:19:05,944 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/nla-digbench-scaling/hard-ll_valuebound1.c [2022-03-18 03:19:05,989 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ca2d44859/08ce8a7178ef4d4a9184b3d16e03fec5/FLAG2bd1210c8 [2022-03-18 03:19:06,350 INFO L306 CDTParser]: Found 1 translation units. [2022-03-18 03:19:06,350 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench-scaling/hard-ll_valuebound1.c [2022-03-18 03:19:06,354 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ca2d44859/08ce8a7178ef4d4a9184b3d16e03fec5/FLAG2bd1210c8 [2022-03-18 03:19:06,362 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ca2d44859/08ce8a7178ef4d4a9184b3d16e03fec5 [2022-03-18 03:19:06,363 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-03-18 03:19:06,364 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2022-03-18 03:19:06,365 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-03-18 03:19:06,365 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-03-18 03:19:06,367 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-03-18 03:19:06,368 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.03 03:19:06" (1/1) ... [2022-03-18 03:19:06,368 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@f882a3c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.03 03:19:06, skipping insertion in model container [2022-03-18 03:19:06,369 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.03 03:19:06" (1/1) ... [2022-03-18 03:19:06,373 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-03-18 03:19:06,380 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-03-18 03:19:06,538 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench-scaling/hard-ll_valuebound1.c[538,551] [2022-03-18 03:19:06,560 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-03-18 03:19:06,581 INFO L203 MainTranslator]: Completed pre-run [2022-03-18 03:19:06,590 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench-scaling/hard-ll_valuebound1.c[538,551] [2022-03-18 03:19:06,604 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-03-18 03:19:06,612 INFO L208 MainTranslator]: Completed translation [2022-03-18 03:19:06,612 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.03 03:19:06 WrapperNode [2022-03-18 03:19:06,612 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-03-18 03:19:06,613 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-03-18 03:19:06,613 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-03-18 03:19:06,613 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-03-18 03:19:06,621 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.03 03:19:06" (1/1) ... [2022-03-18 03:19:06,621 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.03 03:19:06" (1/1) ... [2022-03-18 03:19:06,626 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.03 03:19:06" (1/1) ... [2022-03-18 03:19:06,626 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.03 03:19:06" (1/1) ... [2022-03-18 03:19:06,635 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.03 03:19:06" (1/1) ... [2022-03-18 03:19:06,638 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.03 03:19:06" (1/1) ... [2022-03-18 03:19:06,644 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.03 03:19:06" (1/1) ... [2022-03-18 03:19:06,647 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-03-18 03:19:06,647 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-03-18 03:19:06,647 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-03-18 03:19:06,648 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-03-18 03:19:06,648 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.03 03:19:06" (1/1) ... [2022-03-18 03:19:06,653 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-03-18 03:19:06,659 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-18 03:19:06,688 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-03-18 03:19:06,735 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-03-18 03:19:06,760 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2022-03-18 03:19:06,760 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-03-18 03:19:06,760 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2022-03-18 03:19:06,760 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-03-18 03:19:06,760 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-03-18 03:19:06,761 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2022-03-18 03:19:06,761 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2022-03-18 03:19:06,761 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2022-03-18 03:19:06,761 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2022-03-18 03:19:06,761 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-03-18 03:19:06,762 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uint [2022-03-18 03:19:06,762 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-03-18 03:19:06,762 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-03-18 03:19:06,762 INFO L130 BoogieDeclarations]: Found specification of procedure main [2022-03-18 03:19:06,763 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2022-03-18 03:19:06,763 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-03-18 03:19:06,763 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-03-18 03:19:06,763 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-03-18 03:19:06,763 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-03-18 03:19:06,763 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-03-18 03:19:06,809 INFO L234 CfgBuilder]: Building ICFG [2022-03-18 03:19:06,811 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-03-18 03:19:06,915 INFO L275 CfgBuilder]: Performing block encoding [2022-03-18 03:19:06,926 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-03-18 03:19:06,927 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2022-03-18 03:19:06,928 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.03 03:19:06 BoogieIcfgContainer [2022-03-18 03:19:06,928 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-03-18 03:19:06,946 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-03-18 03:19:06,947 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-03-18 03:19:06,951 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-03-18 03:19:06,951 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.03 03:19:06" (1/3) ... [2022-03-18 03:19:06,951 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4a17eaa5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.03 03:19:06, skipping insertion in model container [2022-03-18 03:19:06,951 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.03 03:19:06" (2/3) ... [2022-03-18 03:19:06,952 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4a17eaa5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.03 03:19:06, skipping insertion in model container [2022-03-18 03:19:06,952 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.03 03:19:06" (3/3) ... [2022-03-18 03:19:06,952 INFO L111 eAbstractionObserver]: Analyzing ICFG hard-ll_valuebound1.c [2022-03-18 03:19:06,968 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2022-03-18 03:19:06,968 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-03-18 03:19:07,005 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-03-18 03:19:07,013 INFO L340 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=Craig_NestedInterpolation, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP [2022-03-18 03:19:07,013 INFO L341 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-03-18 03:19:07,026 INFO L276 IsEmpty]: Start isEmpty. Operand has 38 states, 20 states have (on average 1.5) internal successors, (30), 21 states have internal predecessors, (30), 12 states have call successors, (12), 4 states have call predecessors, (12), 4 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2022-03-18 03:19:07,034 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-03-18 03:19:07,034 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 03:19:07,035 INFO L500 BasicCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 03:19:07,035 INFO L403 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 03:19:07,039 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 03:19:07,039 INFO L85 PathProgramCache]: Analyzing trace with hash -1784424332, now seen corresponding path program 1 times [2022-03-18 03:19:07,046 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-18 03:19:07,047 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [683045814] [2022-03-18 03:19:07,054 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-18 03:19:07,054 INFO L85 PathProgramCache]: Analyzing trace with hash -1784424332, now seen corresponding path program 2 times [2022-03-18 03:19:07,056 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 03:19:07,056 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1431677571] [2022-03-18 03:19:07,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 03:19:07,057 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 03:19:07,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 03:19:07,214 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 03:19:07,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 03:19:07,226 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-18 03:19:07,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 03:19:07,233 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-18 03:19:07,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 03:19:07,250 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-03-18 03:19:07,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 03:19:07,259 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-03-18 03:19:07,259 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 03:19:07,259 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1431677571] [2022-03-18 03:19:07,260 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1431677571] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 03:19:07,260 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 03:19:07,260 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-03-18 03:19:07,262 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-18 03:19:07,262 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [683045814] [2022-03-18 03:19:07,262 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [683045814] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 03:19:07,262 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 03:19:07,262 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-03-18 03:19:07,262 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [412063634] [2022-03-18 03:19:07,263 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-18 03:19:07,265 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-03-18 03:19:07,265 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-18 03:19:07,284 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-03-18 03:19:07,285 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-03-18 03:19:07,286 INFO L87 Difference]: Start difference. First operand has 38 states, 20 states have (on average 1.5) internal successors, (30), 21 states have internal predecessors, (30), 12 states have call successors, (12), 4 states have call predecessors, (12), 4 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) Second operand has 3 states, 3 states have (on average 4.0) internal successors, (12), 2 states have internal predecessors, (12), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-03-18 03:19:07,371 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 03:19:07,371 INFO L93 Difference]: Finished difference Result 69 states and 110 transitions. [2022-03-18 03:19:07,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-03-18 03:19:07,373 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 2 states have internal predecessors, (12), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 28 [2022-03-18 03:19:07,373 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 03:19:07,378 INFO L225 Difference]: With dead ends: 69 [2022-03-18 03:19:07,378 INFO L226 Difference]: Without dead ends: 33 [2022-03-18 03:19:07,380 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-03-18 03:19:07,383 INFO L912 BasicCegarLoop]: 38 mSDtfsCounter, 21 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 41 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-18 03:19:07,384 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [31 Valid, 41 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-18 03:19:07,394 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2022-03-18 03:19:07,412 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2022-03-18 03:19:07,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 17 states have (on average 1.2352941176470589) internal successors, (21), 18 states have internal predecessors, (21), 12 states have call successors, (12), 4 states have call predecessors, (12), 3 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2022-03-18 03:19:07,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 43 transitions. [2022-03-18 03:19:07,417 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 43 transitions. Word has length 28 [2022-03-18 03:19:07,418 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 03:19:07,418 INFO L478 AbstractCegarLoop]: Abstraction has 33 states and 43 transitions. [2022-03-18 03:19:07,418 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 2 states have internal predecessors, (12), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-03-18 03:19:07,418 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 43 transitions. [2022-03-18 03:19:07,419 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-03-18 03:19:07,419 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 03:19:07,419 INFO L500 BasicCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 03:19:07,420 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-03-18 03:19:07,420 INFO L403 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 03:19:07,421 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 03:19:07,421 INFO L85 PathProgramCache]: Analyzing trace with hash 1361835634, now seen corresponding path program 1 times [2022-03-18 03:19:07,421 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-18 03:19:07,421 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [857882467] [2022-03-18 03:19:07,421 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-18 03:19:07,421 INFO L85 PathProgramCache]: Analyzing trace with hash 1361835634, now seen corresponding path program 2 times [2022-03-18 03:19:07,422 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 03:19:07,422 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1736372079] [2022-03-18 03:19:07,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 03:19:07,422 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 03:19:07,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 03:19:07,525 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 03:19:07,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 03:19:07,534 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-18 03:19:07,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 03:19:07,546 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-18 03:19:07,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 03:19:07,552 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-03-18 03:19:07,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 03:19:07,555 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-03-18 03:19:07,555 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 03:19:07,555 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1736372079] [2022-03-18 03:19:07,555 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1736372079] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 03:19:07,556 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 03:19:07,556 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-03-18 03:19:07,556 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-18 03:19:07,556 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [857882467] [2022-03-18 03:19:07,556 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [857882467] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 03:19:07,556 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 03:19:07,556 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-03-18 03:19:07,556 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [391225150] [2022-03-18 03:19:07,556 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-18 03:19:07,557 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-03-18 03:19:07,557 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-18 03:19:07,557 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-03-18 03:19:07,558 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-03-18 03:19:07,558 INFO L87 Difference]: Start difference. First operand 33 states and 43 transitions. Second operand has 6 states, 6 states have (on average 2.0) internal successors, (12), 4 states have internal predecessors, (12), 2 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2022-03-18 03:19:07,716 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 03:19:07,716 INFO L93 Difference]: Finished difference Result 46 states and 60 transitions. [2022-03-18 03:19:07,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-03-18 03:19:07,716 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.0) internal successors, (12), 4 states have internal predecessors, (12), 2 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 28 [2022-03-18 03:19:07,716 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 03:19:07,717 INFO L225 Difference]: With dead ends: 46 [2022-03-18 03:19:07,717 INFO L226 Difference]: Without dead ends: 44 [2022-03-18 03:19:07,717 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2022-03-18 03:19:07,718 INFO L912 BasicCegarLoop]: 31 mSDtfsCounter, 38 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 126 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 48 SdHoareTripleChecker+Invalid, 155 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 126 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-18 03:19:07,719 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [44 Valid, 48 Invalid, 155 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 126 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-18 03:19:07,719 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2022-03-18 03:19:07,725 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 37. [2022-03-18 03:19:07,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 20 states have (on average 1.2) internal successors, (24), 21 states have internal predecessors, (24), 12 states have call successors, (12), 5 states have call predecessors, (12), 4 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2022-03-18 03:19:07,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 46 transitions. [2022-03-18 03:19:07,726 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 46 transitions. Word has length 28 [2022-03-18 03:19:07,727 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 03:19:07,727 INFO L478 AbstractCegarLoop]: Abstraction has 37 states and 46 transitions. [2022-03-18 03:19:07,727 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.0) internal successors, (12), 4 states have internal predecessors, (12), 2 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2022-03-18 03:19:07,727 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 46 transitions. [2022-03-18 03:19:07,727 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-03-18 03:19:07,727 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 03:19:07,728 INFO L500 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 03:19:07,728 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-03-18 03:19:07,728 INFO L403 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 03:19:07,728 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 03:19:07,728 INFO L85 PathProgramCache]: Analyzing trace with hash 1382067636, now seen corresponding path program 1 times [2022-03-18 03:19:07,728 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-18 03:19:07,729 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1325123489] [2022-03-18 03:19:07,729 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-18 03:19:07,729 INFO L85 PathProgramCache]: Analyzing trace with hash 1382067636, now seen corresponding path program 2 times [2022-03-18 03:19:07,729 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 03:19:07,729 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1845125018] [2022-03-18 03:19:07,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 03:19:07,729 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 03:19:07,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 03:19:07,814 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 03:19:07,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 03:19:07,819 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-18 03:19:07,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 03:19:07,821 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-18 03:19:07,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 03:19:07,824 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-03-18 03:19:07,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 03:19:07,827 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-03-18 03:19:07,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 03:19:07,831 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-03-18 03:19:07,831 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 03:19:07,831 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1845125018] [2022-03-18 03:19:07,831 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1845125018] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 03:19:07,832 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 03:19:07,832 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-03-18 03:19:07,832 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-18 03:19:07,832 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1325123489] [2022-03-18 03:19:07,832 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1325123489] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 03:19:07,832 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 03:19:07,832 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-03-18 03:19:07,832 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [899715518] [2022-03-18 03:19:07,832 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-18 03:19:07,833 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-03-18 03:19:07,833 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-18 03:19:07,833 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-03-18 03:19:07,833 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-03-18 03:19:07,833 INFO L87 Difference]: Start difference. First operand 37 states and 46 transitions. Second operand has 6 states, 6 states have (on average 2.5) internal successors, (15), 4 states have internal predecessors, (15), 2 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-03-18 03:19:07,973 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 03:19:07,974 INFO L93 Difference]: Finished difference Result 50 states and 63 transitions. [2022-03-18 03:19:07,974 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-03-18 03:19:07,974 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.5) internal successors, (15), 4 states have internal predecessors, (15), 2 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 33 [2022-03-18 03:19:07,974 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 03:19:07,975 INFO L225 Difference]: With dead ends: 50 [2022-03-18 03:19:07,975 INFO L226 Difference]: Without dead ends: 48 [2022-03-18 03:19:07,975 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2022-03-18 03:19:07,976 INFO L912 BasicCegarLoop]: 31 mSDtfsCounter, 33 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 132 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 48 SdHoareTripleChecker+Invalid, 160 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 132 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-18 03:19:07,976 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [39 Valid, 48 Invalid, 160 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 132 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-18 03:19:07,977 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2022-03-18 03:19:07,983 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 41. [2022-03-18 03:19:07,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 23 states have (on average 1.173913043478261) internal successors, (27), 24 states have internal predecessors, (27), 12 states have call successors, (12), 6 states have call predecessors, (12), 5 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2022-03-18 03:19:07,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 49 transitions. [2022-03-18 03:19:07,984 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 49 transitions. Word has length 33 [2022-03-18 03:19:07,985 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 03:19:07,985 INFO L478 AbstractCegarLoop]: Abstraction has 41 states and 49 transitions. [2022-03-18 03:19:07,985 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.5) internal successors, (15), 4 states have internal predecessors, (15), 2 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-03-18 03:19:07,985 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 49 transitions. [2022-03-18 03:19:07,985 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2022-03-18 03:19:07,986 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 03:19:07,986 INFO L500 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 03:19:07,986 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-03-18 03:19:07,986 INFO L403 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 03:19:07,986 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 03:19:07,986 INFO L85 PathProgramCache]: Analyzing trace with hash -1455208590, now seen corresponding path program 1 times [2022-03-18 03:19:07,986 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-18 03:19:07,987 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1289212379] [2022-03-18 03:19:07,987 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-18 03:19:07,987 INFO L85 PathProgramCache]: Analyzing trace with hash -1455208590, now seen corresponding path program 2 times [2022-03-18 03:19:07,987 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 03:19:07,987 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1359971533] [2022-03-18 03:19:07,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 03:19:07,987 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 03:19:07,996 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-03-18 03:19:07,996 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [460978113] [2022-03-18 03:19:07,997 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-18 03:19:07,997 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-18 03:19:07,997 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-18 03:19:07,998 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-18 03:19:08,027 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-03-18 03:19:08,045 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-18 03:19:08,046 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-18 03:19:08,048 INFO L263 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 17 conjunts are in the unsatisfiable core [2022-03-18 03:19:08,051 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-18 03:19:08,249 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-03-18 03:19:08,249 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-03-18 03:19:08,249 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 03:19:08,249 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1359971533] [2022-03-18 03:19:08,249 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-03-18 03:19:08,250 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [460978113] [2022-03-18 03:19:08,250 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [460978113] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 03:19:08,250 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 03:19:08,250 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-03-18 03:19:08,250 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-18 03:19:08,251 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1289212379] [2022-03-18 03:19:08,251 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1289212379] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 03:19:08,251 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 03:19:08,251 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-03-18 03:19:08,251 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [340795696] [2022-03-18 03:19:08,251 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-18 03:19:08,251 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-03-18 03:19:08,251 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-18 03:19:08,252 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-03-18 03:19:08,252 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2022-03-18 03:19:08,252 INFO L87 Difference]: Start difference. First operand 41 states and 49 transitions. Second operand has 9 states, 8 states have (on average 2.25) internal successors, (18), 6 states have internal predecessors, (18), 3 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (6), 4 states have call predecessors, (6), 3 states have call successors, (6) [2022-03-18 03:19:08,338 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 03:19:08,338 INFO L93 Difference]: Finished difference Result 69 states and 89 transitions. [2022-03-18 03:19:08,339 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-03-18 03:19:08,339 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.25) internal successors, (18), 6 states have internal predecessors, (18), 3 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (6), 4 states have call predecessors, (6), 3 states have call successors, (6) Word has length 38 [2022-03-18 03:19:08,339 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 03:19:08,340 INFO L225 Difference]: With dead ends: 69 [2022-03-18 03:19:08,340 INFO L226 Difference]: Without dead ends: 55 [2022-03-18 03:19:08,341 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2022-03-18 03:19:08,341 INFO L912 BasicCegarLoop]: 40 mSDtfsCounter, 23 mSDsluCounter, 185 mSDsCounter, 0 mSdLazyCounter, 98 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 225 SdHoareTripleChecker+Invalid, 108 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 98 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-18 03:19:08,341 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [34 Valid, 225 Invalid, 108 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 98 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-18 03:19:08,342 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2022-03-18 03:19:08,350 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 55. [2022-03-18 03:19:08,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55 states, 30 states have (on average 1.1666666666666667) internal successors, (35), 32 states have internal predecessors, (35), 18 states have call successors, (18), 7 states have call predecessors, (18), 6 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2022-03-18 03:19:08,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 68 transitions. [2022-03-18 03:19:08,351 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 68 transitions. Word has length 38 [2022-03-18 03:19:08,351 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 03:19:08,352 INFO L478 AbstractCegarLoop]: Abstraction has 55 states and 68 transitions. [2022-03-18 03:19:08,352 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 2.25) internal successors, (18), 6 states have internal predecessors, (18), 3 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (6), 4 states have call predecessors, (6), 3 states have call successors, (6) [2022-03-18 03:19:08,352 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 68 transitions. [2022-03-18 03:19:08,352 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2022-03-18 03:19:08,353 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 03:19:08,353 INFO L500 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 03:19:08,374 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-03-18 03:19:08,574 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-18 03:19:08,575 INFO L403 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 03:19:08,575 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 03:19:08,575 INFO L85 PathProgramCache]: Analyzing trace with hash -1688067263, now seen corresponding path program 1 times [2022-03-18 03:19:08,575 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-18 03:19:08,575 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [678580260] [2022-03-18 03:19:08,576 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-18 03:19:08,576 INFO L85 PathProgramCache]: Analyzing trace with hash -1688067263, now seen corresponding path program 2 times [2022-03-18 03:19:08,576 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 03:19:08,576 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1506783063] [2022-03-18 03:19:08,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 03:19:08,576 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 03:19:08,584 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-03-18 03:19:08,584 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [527422023] [2022-03-18 03:19:08,584 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-18 03:19:08,584 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-18 03:19:08,584 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-18 03:19:08,608 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-18 03:19:08,639 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-03-18 03:19:08,670 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-18 03:19:08,670 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-18 03:19:08,671 INFO L263 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 13 conjunts are in the unsatisfiable core [2022-03-18 03:19:08,672 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-18 03:19:08,890 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 9 proven. 3 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-03-18 03:19:08,890 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-18 03:19:09,084 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 9 proven. 3 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-03-18 03:19:09,085 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 03:19:09,085 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1506783063] [2022-03-18 03:19:09,085 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-03-18 03:19:09,085 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [527422023] [2022-03-18 03:19:09,085 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [527422023] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-18 03:19:09,085 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-03-18 03:19:09,085 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 12 [2022-03-18 03:19:09,085 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-18 03:19:09,085 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [678580260] [2022-03-18 03:19:09,086 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [678580260] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 03:19:09,086 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 03:19:09,086 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-03-18 03:19:09,086 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [417921441] [2022-03-18 03:19:09,086 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-18 03:19:09,086 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-03-18 03:19:09,086 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-18 03:19:09,086 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-03-18 03:19:09,087 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2022-03-18 03:19:09,087 INFO L87 Difference]: Start difference. First operand 55 states and 68 transitions. Second operand has 9 states, 9 states have (on average 2.2222222222222223) internal successors, (20), 7 states have internal predecessors, (20), 4 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-03-18 03:19:09,189 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 03:19:09,189 INFO L93 Difference]: Finished difference Result 65 states and 76 transitions. [2022-03-18 03:19:09,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-03-18 03:19:09,189 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.2222222222222223) internal successors, (20), 7 states have internal predecessors, (20), 4 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 45 [2022-03-18 03:19:09,190 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 03:19:09,190 INFO L225 Difference]: With dead ends: 65 [2022-03-18 03:19:09,190 INFO L226 Difference]: Without dead ends: 54 [2022-03-18 03:19:09,190 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 78 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=165, Unknown=0, NotChecked=0, Total=210 [2022-03-18 03:19:09,191 INFO L912 BasicCegarLoop]: 37 mSDtfsCounter, 24 mSDsluCounter, 158 mSDsCounter, 0 mSdLazyCounter, 102 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 195 SdHoareTripleChecker+Invalid, 114 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 102 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-18 03:19:09,191 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [30 Valid, 195 Invalid, 114 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 102 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-18 03:19:09,192 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2022-03-18 03:19:09,198 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 54. [2022-03-18 03:19:09,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 31 states have (on average 1.1290322580645162) internal successors, (35), 32 states have internal predecessors, (35), 15 states have call successors, (15), 8 states have call predecessors, (15), 7 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2022-03-18 03:19:09,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 63 transitions. [2022-03-18 03:19:09,199 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 63 transitions. Word has length 45 [2022-03-18 03:19:09,199 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 03:19:09,199 INFO L478 AbstractCegarLoop]: Abstraction has 54 states and 63 transitions. [2022-03-18 03:19:09,199 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.2222222222222223) internal successors, (20), 7 states have internal predecessors, (20), 4 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-03-18 03:19:09,199 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 63 transitions. [2022-03-18 03:19:09,200 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2022-03-18 03:19:09,200 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 03:19:09,200 INFO L500 BasicCegarLoop]: trace histogram [6, 5, 5, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 03:19:09,219 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-03-18 03:19:09,419 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-18 03:19:09,420 INFO L403 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 03:19:09,420 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 03:19:09,420 INFO L85 PathProgramCache]: Analyzing trace with hash -1471734606, now seen corresponding path program 1 times [2022-03-18 03:19:09,420 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-18 03:19:09,420 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [160817554] [2022-03-18 03:19:09,421 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-18 03:19:09,421 INFO L85 PathProgramCache]: Analyzing trace with hash -1471734606, now seen corresponding path program 2 times [2022-03-18 03:19:09,421 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 03:19:09,421 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1096994896] [2022-03-18 03:19:09,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 03:19:09,421 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 03:19:09,428 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-03-18 03:19:09,428 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [414337074] [2022-03-18 03:19:09,428 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-18 03:19:09,428 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-18 03:19:09,428 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-18 03:19:09,431 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-18 03:19:09,443 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-03-18 03:19:09,481 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-18 03:19:09,482 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-18 03:19:09,484 INFO L263 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 21 conjunts are in the unsatisfiable core [2022-03-18 03:19:09,486 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-18 03:19:09,694 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 16 proven. 4 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2022-03-18 03:19:09,694 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-18 03:19:09,821 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2022-03-18 03:19:09,822 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 03:19:09,822 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1096994896] [2022-03-18 03:19:09,822 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-03-18 03:19:09,822 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [414337074] [2022-03-18 03:19:09,822 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [414337074] provided 1 perfect and 1 imperfect interpolant sequences [2022-03-18 03:19:09,822 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-03-18 03:19:09,822 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [10] total 11 [2022-03-18 03:19:09,822 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-18 03:19:09,823 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [160817554] [2022-03-18 03:19:09,823 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [160817554] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 03:19:09,823 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 03:19:09,823 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-03-18 03:19:09,823 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1886324385] [2022-03-18 03:19:09,823 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-18 03:19:09,823 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-03-18 03:19:09,823 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-18 03:19:09,824 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-03-18 03:19:09,824 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2022-03-18 03:19:09,824 INFO L87 Difference]: Start difference. First operand 54 states and 63 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, (9), 2 states have call predecessors, (9), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-03-18 03:19:09,863 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 03:19:09,863 INFO L93 Difference]: Finished difference Result 66 states and 78 transitions. [2022-03-18 03:19:09,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-03-18 03:19:09,864 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, (9), 2 states have call predecessors, (9), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 55 [2022-03-18 03:19:09,864 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 03:19:09,865 INFO L225 Difference]: With dead ends: 66 [2022-03-18 03:19:09,865 INFO L226 Difference]: Without dead ends: 64 [2022-03-18 03:19:09,865 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 98 SyntacticMatches, 2 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2022-03-18 03:19:09,865 INFO L912 BasicCegarLoop]: 41 mSDtfsCounter, 8 mSDsluCounter, 100 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 141 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-18 03:19:09,866 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [11 Valid, 141 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-18 03:19:09,866 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2022-03-18 03:19:09,873 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 61. [2022-03-18 03:19:09,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61 states, 35 states have (on average 1.1142857142857143) internal successors, (39), 37 states have internal predecessors, (39), 17 states have call successors, (17), 9 states have call predecessors, (17), 8 states have return successors, (15), 14 states have call predecessors, (15), 15 states have call successors, (15) [2022-03-18 03:19:09,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 71 transitions. [2022-03-18 03:19:09,874 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 71 transitions. Word has length 55 [2022-03-18 03:19:09,874 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 03:19:09,874 INFO L478 AbstractCegarLoop]: Abstraction has 61 states and 71 transitions. [2022-03-18 03:19:09,875 INFO L479 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, (9), 2 states have call predecessors, (9), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-03-18 03:19:09,875 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 71 transitions. [2022-03-18 03:19:09,875 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-03-18 03:19:09,875 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 03:19:09,875 INFO L500 BasicCegarLoop]: trace histogram [7, 6, 6, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 03:19:09,906 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-03-18 03:19:10,091 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-18 03:19:10,092 INFO L403 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 03:19:10,092 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 03:19:10,092 INFO L85 PathProgramCache]: Analyzing trace with hash -1784683007, now seen corresponding path program 1 times [2022-03-18 03:19:10,092 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-18 03:19:10,092 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [822616804] [2022-03-18 03:19:10,093 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-18 03:19:10,093 INFO L85 PathProgramCache]: Analyzing trace with hash -1784683007, now seen corresponding path program 2 times [2022-03-18 03:19:10,093 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 03:19:10,093 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1399916738] [2022-03-18 03:19:10,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 03:19:10,093 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 03:19:10,100 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-03-18 03:19:10,100 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [133015011] [2022-03-18 03:19:10,100 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-18 03:19:10,101 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-18 03:19:10,101 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-18 03:19:10,102 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-18 03:19:10,103 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-03-18 03:19:10,146 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-18 03:19:10,146 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-18 03:19:10,147 INFO L263 TraceCheckSpWp]: Trace formula consists of 150 conjuncts, 17 conjunts are in the unsatisfiable core [2022-03-18 03:19:10,149 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-18 03:19:10,478 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 15 proven. 8 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2022-03-18 03:19:10,478 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-18 03:19:10,675 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 12 proven. 5 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2022-03-18 03:19:10,675 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 03:19:10,675 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1399916738] [2022-03-18 03:19:10,675 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-03-18 03:19:10,675 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [133015011] [2022-03-18 03:19:10,675 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [133015011] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-18 03:19:10,676 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-03-18 03:19:10,676 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 7] total 13 [2022-03-18 03:19:10,676 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-18 03:19:10,676 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [822616804] [2022-03-18 03:19:10,676 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [822616804] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 03:19:10,676 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 03:19:10,676 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-03-18 03:19:10,676 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [186016821] [2022-03-18 03:19:10,676 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-18 03:19:10,676 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-03-18 03:19:10,677 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-18 03:19:10,677 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-03-18 03:19:10,677 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2022-03-18 03:19:10,677 INFO L87 Difference]: Start difference. First operand 61 states and 71 transitions. Second operand has 10 states, 10 states have (on average 2.2) internal successors, (22), 8 states have internal predecessors, (22), 5 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (10), 4 states have call predecessors, (10), 4 states have call successors, (10) [2022-03-18 03:19:10,827 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 03:19:10,828 INFO L93 Difference]: Finished difference Result 90 states and 108 transitions. [2022-03-18 03:19:10,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-03-18 03:19:10,828 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.2) internal successors, (22), 8 states have internal predecessors, (22), 5 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (10), 4 states have call predecessors, (10), 4 states have call successors, (10) Word has length 62 [2022-03-18 03:19:10,828 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 03:19:10,830 INFO L225 Difference]: With dead ends: 90 [2022-03-18 03:19:10,830 INFO L226 Difference]: Without dead ends: 88 [2022-03-18 03:19:10,830 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 111 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=53, Invalid=187, Unknown=0, NotChecked=0, Total=240 [2022-03-18 03:19:10,831 INFO L912 BasicCegarLoop]: 38 mSDtfsCounter, 28 mSDsluCounter, 166 mSDsCounter, 0 mSdLazyCounter, 171 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 204 SdHoareTripleChecker+Invalid, 197 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 171 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-18 03:19:10,831 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [34 Valid, 204 Invalid, 197 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 171 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-18 03:19:10,831 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2022-03-18 03:19:10,841 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 87. [2022-03-18 03:19:10,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 87 states, 50 states have (on average 1.14) internal successors, (57), 54 states have internal predecessors, (57), 25 states have call successors, (25), 12 states have call predecessors, (25), 11 states have return successors, (23), 20 states have call predecessors, (23), 23 states have call successors, (23) [2022-03-18 03:19:10,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 105 transitions. [2022-03-18 03:19:10,842 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 105 transitions. Word has length 62 [2022-03-18 03:19:10,842 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 03:19:10,843 INFO L478 AbstractCegarLoop]: Abstraction has 87 states and 105 transitions. [2022-03-18 03:19:10,843 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 2.2) internal successors, (22), 8 states have internal predecessors, (22), 5 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (10), 4 states have call predecessors, (10), 4 states have call successors, (10) [2022-03-18 03:19:10,843 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 105 transitions. [2022-03-18 03:19:10,843 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-03-18 03:19:10,844 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 03:19:10,844 INFO L500 BasicCegarLoop]: trace histogram [9, 8, 8, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 03:19:10,865 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-03-18 03:19:11,065 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-18 03:19:11,065 INFO L403 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 03:19:11,066 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 03:19:11,066 INFO L85 PathProgramCache]: Analyzing trace with hash 680531353, now seen corresponding path program 1 times [2022-03-18 03:19:11,066 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-18 03:19:11,066 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [2137356621] [2022-03-18 03:19:11,066 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-18 03:19:11,066 INFO L85 PathProgramCache]: Analyzing trace with hash 680531353, now seen corresponding path program 2 times [2022-03-18 03:19:11,067 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 03:19:11,067 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1284365404] [2022-03-18 03:19:11,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 03:19:11,067 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 03:19:11,074 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-03-18 03:19:11,074 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1700109566] [2022-03-18 03:19:11,074 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-18 03:19:11,074 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-18 03:19:11,074 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-18 03:19:11,075 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-18 03:19:11,076 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-03-18 03:19:11,130 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-18 03:19:11,130 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-18 03:19:11,131 INFO L263 TraceCheckSpWp]: Trace formula consists of 179 conjuncts, 30 conjunts are in the unsatisfiable core [2022-03-18 03:19:11,133 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-18 03:19:11,678 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 19 proven. 10 refuted. 0 times theorem prover too weak. 118 trivial. 0 not checked. [2022-03-18 03:19:11,678 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-18 03:19:14,215 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 16 proven. 7 refuted. 0 times theorem prover too weak. 124 trivial. 0 not checked. [2022-03-18 03:19:14,216 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 03:19:14,216 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1284365404] [2022-03-18 03:19:14,216 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-03-18 03:19:14,216 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1700109566] [2022-03-18 03:19:14,216 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1700109566] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-18 03:19:14,216 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-03-18 03:19:14,216 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 9] total 17 [2022-03-18 03:19:14,217 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-18 03:19:14,217 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [2137356621] [2022-03-18 03:19:14,217 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [2137356621] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 03:19:14,217 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 03:19:14,217 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-03-18 03:19:14,217 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [953022029] [2022-03-18 03:19:14,217 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-18 03:19:14,217 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-03-18 03:19:14,217 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-18 03:19:14,218 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-03-18 03:19:14,218 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=210, Unknown=0, NotChecked=0, Total=272 [2022-03-18 03:19:14,218 INFO L87 Difference]: Start difference. First operand 87 states and 105 transitions. Second operand has 12 states, 12 states have (on average 2.0833333333333335) internal successors, (25), 10 states have internal predecessors, (25), 6 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (12), 5 states have call predecessors, (12), 5 states have call successors, (12) [2022-03-18 03:19:14,710 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 03:19:14,710 INFO L93 Difference]: Finished difference Result 121 states and 148 transitions. [2022-03-18 03:19:14,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-03-18 03:19:14,711 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.0833333333333335) internal successors, (25), 10 states have internal predecessors, (25), 6 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (12), 5 states have call predecessors, (12), 5 states have call successors, (12) Word has length 75 [2022-03-18 03:19:14,711 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 03:19:14,712 INFO L225 Difference]: With dead ends: 121 [2022-03-18 03:19:14,712 INFO L226 Difference]: Without dead ends: 98 [2022-03-18 03:19:14,713 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 151 GetRequests, 133 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=70, Invalid=272, Unknown=0, NotChecked=0, Total=342 [2022-03-18 03:19:14,713 INFO L912 BasicCegarLoop]: 45 mSDtfsCounter, 23 mSDsluCounter, 306 mSDsCounter, 0 mSdLazyCounter, 269 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 351 SdHoareTripleChecker+Invalid, 291 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 269 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-18 03:19:14,713 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [32 Valid, 351 Invalid, 291 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 269 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-03-18 03:19:14,714 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2022-03-18 03:19:14,725 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 96. [2022-03-18 03:19:14,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 96 states, 58 states have (on average 1.1206896551724137) internal successors, (65), 60 states have internal predecessors, (65), 24 states have call successors, (24), 14 states have call predecessors, (24), 13 states have return successors, (22), 21 states have call predecessors, (22), 22 states have call successors, (22) [2022-03-18 03:19:14,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 111 transitions. [2022-03-18 03:19:14,732 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 111 transitions. Word has length 75 [2022-03-18 03:19:14,732 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 03:19:14,732 INFO L478 AbstractCegarLoop]: Abstraction has 96 states and 111 transitions. [2022-03-18 03:19:14,733 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.0833333333333335) internal successors, (25), 10 states have internal predecessors, (25), 6 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (12), 5 states have call predecessors, (12), 5 states have call successors, (12) [2022-03-18 03:19:14,733 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 111 transitions. [2022-03-18 03:19:14,736 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-18 03:19:14,736 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 03:19:14,736 INFO L500 BasicCegarLoop]: trace histogram [10, 9, 9, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 03:19:14,752 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-03-18 03:19:14,952 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-18 03:19:14,952 INFO L403 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 03:19:14,953 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 03:19:14,953 INFO L85 PathProgramCache]: Analyzing trace with hash -1211630783, now seen corresponding path program 3 times [2022-03-18 03:19:14,953 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-18 03:19:14,953 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [256492200] [2022-03-18 03:19:14,953 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-18 03:19:14,953 INFO L85 PathProgramCache]: Analyzing trace with hash -1211630783, now seen corresponding path program 4 times [2022-03-18 03:19:14,953 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 03:19:14,954 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [290386358] [2022-03-18 03:19:14,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 03:19:14,954 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 03:19:14,965 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-03-18 03:19:14,965 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [164156519] [2022-03-18 03:19:14,965 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-18 03:19:14,965 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-18 03:19:14,965 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-18 03:19:14,967 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-18 03:19:14,972 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-03-18 03:19:15,008 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-18 03:19:15,009 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-18 03:19:15,009 INFO L263 TraceCheckSpWp]: Trace formula consists of 183 conjuncts, 14 conjunts are in the unsatisfiable core [2022-03-18 03:19:15,013 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-18 03:19:15,287 INFO L134 CoverageAnalysis]: Checked inductivity of 189 backedges. 23 proven. 16 refuted. 0 times theorem prover too weak. 150 trivial. 0 not checked. [2022-03-18 03:19:15,287 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-18 03:19:15,510 INFO L134 CoverageAnalysis]: Checked inductivity of 189 backedges. 18 proven. 21 refuted. 0 times theorem prover too weak. 150 trivial. 0 not checked. [2022-03-18 03:19:15,510 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 03:19:15,511 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [290386358] [2022-03-18 03:19:15,511 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-03-18 03:19:15,511 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [164156519] [2022-03-18 03:19:15,511 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [164156519] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-18 03:19:15,511 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-03-18 03:19:15,511 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 12 [2022-03-18 03:19:15,511 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-18 03:19:15,511 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [256492200] [2022-03-18 03:19:15,511 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [256492200] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 03:19:15,511 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 03:19:15,511 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-03-18 03:19:15,512 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [542861176] [2022-03-18 03:19:15,512 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-18 03:19:15,512 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-03-18 03:19:15,512 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-18 03:19:15,512 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-03-18 03:19:15,512 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2022-03-18 03:19:15,512 INFO L87 Difference]: Start difference. First operand 96 states and 111 transitions. Second operand has 8 states, 8 states have (on average 3.0) internal successors, (24), 8 states have internal predecessors, (24), 6 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 5 states have call predecessors, (13), 5 states have call successors, (13) [2022-03-18 03:19:15,758 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 03:19:15,758 INFO L93 Difference]: Finished difference Result 113 states and 131 transitions. [2022-03-18 03:19:15,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-03-18 03:19:15,758 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 3.0) internal successors, (24), 8 states have internal predecessors, (24), 6 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 5 states have call predecessors, (13), 5 states have call successors, (13) Word has length 79 [2022-03-18 03:19:15,759 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 03:19:15,759 INFO L225 Difference]: With dead ends: 113 [2022-03-18 03:19:15,759 INFO L226 Difference]: Without dead ends: 76 [2022-03-18 03:19:15,760 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 161 GetRequests, 146 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=59, Invalid=181, Unknown=0, NotChecked=0, Total=240 [2022-03-18 03:19:15,760 INFO L912 BasicCegarLoop]: 49 mSDtfsCounter, 16 mSDsluCounter, 181 mSDsCounter, 0 mSdLazyCounter, 80 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 230 SdHoareTripleChecker+Invalid, 109 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 80 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-18 03:19:15,760 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [16 Valid, 230 Invalid, 109 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 80 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-03-18 03:19:15,761 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2022-03-18 03:19:15,772 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 76. [2022-03-18 03:19:15,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76 states, 46 states have (on average 1.108695652173913) internal successors, (51), 47 states have internal predecessors, (51), 19 states have call successors, (19), 11 states have call predecessors, (19), 10 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) [2022-03-18 03:19:15,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 87 transitions. [2022-03-18 03:19:15,791 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 87 transitions. Word has length 79 [2022-03-18 03:19:15,791 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 03:19:15,791 INFO L478 AbstractCegarLoop]: Abstraction has 76 states and 87 transitions. [2022-03-18 03:19:15,792 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 3.0) internal successors, (24), 8 states have internal predecessors, (24), 6 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 5 states have call predecessors, (13), 5 states have call successors, (13) [2022-03-18 03:19:15,792 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 87 transitions. [2022-03-18 03:19:15,793 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2022-03-18 03:19:15,793 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 03:19:15,793 INFO L500 BasicCegarLoop]: trace histogram [10, 9, 9, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 03:19:15,813 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-03-18 03:19:15,993 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-18 03:19:15,993 INFO L403 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 03:19:15,994 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 03:19:15,994 INFO L85 PathProgramCache]: Analyzing trace with hash -1566820819, now seen corresponding path program 3 times [2022-03-18 03:19:15,994 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-18 03:19:15,994 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [642289025] [2022-03-18 03:19:15,994 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-18 03:19:15,994 INFO L85 PathProgramCache]: Analyzing trace with hash -1566820819, now seen corresponding path program 4 times [2022-03-18 03:19:15,994 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 03:19:15,995 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1919832942] [2022-03-18 03:19:15,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 03:19:15,995 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 03:19:16,001 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-03-18 03:19:16,001 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [167968378] [2022-03-18 03:19:16,001 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-18 03:19:16,001 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-18 03:19:16,001 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-18 03:19:16,002 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-18 03:19:16,003 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-03-18 03:19:16,040 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-18 03:19:16,040 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-18 03:19:16,041 INFO L263 TraceCheckSpWp]: Trace formula consists of 188 conjuncts, 22 conjunts are in the unsatisfiable core [2022-03-18 03:19:16,043 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-18 03:19:16,363 INFO L134 CoverageAnalysis]: Checked inductivity of 182 backedges. 21 proven. 11 refuted. 0 times theorem prover too weak. 150 trivial. 0 not checked. [2022-03-18 03:19:16,364 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-18 03:19:18,473 INFO L134 CoverageAnalysis]: Checked inductivity of 182 backedges. 18 proven. 8 refuted. 0 times theorem prover too weak. 156 trivial. 0 not checked. [2022-03-18 03:19:18,473 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 03:19:18,473 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1919832942] [2022-03-18 03:19:18,473 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-03-18 03:19:18,473 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [167968378] [2022-03-18 03:19:18,473 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [167968378] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-18 03:19:18,473 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-03-18 03:19:18,473 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 8] total 15 [2022-03-18 03:19:18,474 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-18 03:19:18,474 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [642289025] [2022-03-18 03:19:18,474 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [642289025] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 03:19:18,474 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 03:19:18,474 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-03-18 03:19:18,474 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2099647735] [2022-03-18 03:19:18,474 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-18 03:19:18,474 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-03-18 03:19:18,474 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-18 03:19:18,475 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-03-18 03:19:18,475 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=160, Unknown=0, NotChecked=0, Total=210 [2022-03-18 03:19:18,475 INFO L87 Difference]: Start difference. First operand 76 states and 87 transitions. Second operand has 11 states, 11 states have (on average 2.272727272727273) internal successors, (25), 9 states have internal predecessors, (25), 6 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 6 states have call predecessors, (13), 6 states have call successors, (13) [2022-03-18 03:19:18,619 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 03:19:18,619 INFO L93 Difference]: Finished difference Result 96 states and 109 transitions. [2022-03-18 03:19:18,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-03-18 03:19:18,619 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.272727272727273) internal successors, (25), 9 states have internal predecessors, (25), 6 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 6 states have call predecessors, (13), 6 states have call successors, (13) Word has length 80 [2022-03-18 03:19:18,619 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 03:19:18,620 INFO L225 Difference]: With dead ends: 96 [2022-03-18 03:19:18,620 INFO L226 Difference]: Without dead ends: 71 [2022-03-18 03:19:18,620 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 162 GetRequests, 145 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=67, Invalid=239, Unknown=0, NotChecked=0, Total=306 [2022-03-18 03:19:18,621 INFO L912 BasicCegarLoop]: 41 mSDtfsCounter, 16 mSDsluCounter, 256 mSDsCounter, 0 mSdLazyCounter, 157 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 297 SdHoareTripleChecker+Invalid, 175 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 157 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-18 03:19:18,621 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [18 Valid, 297 Invalid, 175 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 157 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-18 03:19:18,621 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2022-03-18 03:19:18,628 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 71. [2022-03-18 03:19:18,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71 states, 44 states have (on average 1.0) internal successors, (44), 44 states have internal predecessors, (44), 16 states have call successors, (16), 12 states have call predecessors, (16), 10 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) [2022-03-18 03:19:18,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 74 transitions. [2022-03-18 03:19:18,628 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 74 transitions. Word has length 80 [2022-03-18 03:19:18,628 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 03:19:18,629 INFO L478 AbstractCegarLoop]: Abstraction has 71 states and 74 transitions. [2022-03-18 03:19:18,629 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.272727272727273) internal successors, (25), 9 states have internal predecessors, (25), 6 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 6 states have call predecessors, (13), 6 states have call successors, (13) [2022-03-18 03:19:18,629 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 74 transitions. [2022-03-18 03:19:18,629 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2022-03-18 03:19:18,629 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 03:19:18,629 INFO L500 BasicCegarLoop]: trace histogram [11, 10, 10, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 03:19:18,648 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-03-18 03:19:18,846 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-18 03:19:18,846 INFO L403 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 03:19:18,846 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 03:19:18,847 INFO L85 PathProgramCache]: Analyzing trace with hash -815356955, now seen corresponding path program 1 times [2022-03-18 03:19:18,847 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-18 03:19:18,847 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [700431921] [2022-03-18 03:19:18,847 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-18 03:19:18,847 INFO L85 PathProgramCache]: Analyzing trace with hash -815356955, now seen corresponding path program 2 times [2022-03-18 03:19:18,847 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 03:19:18,847 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [403339931] [2022-03-18 03:19:18,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 03:19:18,847 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 03:19:18,853 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-03-18 03:19:18,853 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1890857894] [2022-03-18 03:19:18,853 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-18 03:19:18,853 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-18 03:19:18,853 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-18 03:19:18,862 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-18 03:19:18,906 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-03-18 03:19:18,918 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-18 03:19:18,918 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-18 03:19:18,919 INFO L263 TraceCheckSpWp]: Trace formula consists of 199 conjuncts, 32 conjunts are in the unsatisfiable core [2022-03-18 03:19:18,922 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-18 03:19:21,294 INFO L134 CoverageAnalysis]: Checked inductivity of 221 backedges. 23 proven. 12 refuted. 0 times theorem prover too weak. 186 trivial. 0 not checked. [2022-03-18 03:19:21,294 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-18 03:19:24,398 INFO L134 CoverageAnalysis]: Checked inductivity of 221 backedges. 20 proven. 9 refuted. 0 times theorem prover too weak. 192 trivial. 0 not checked. [2022-03-18 03:19:24,399 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 03:19:24,399 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [403339931] [2022-03-18 03:19:24,399 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-03-18 03:19:24,399 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1890857894] [2022-03-18 03:19:24,399 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1890857894] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-18 03:19:24,399 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-03-18 03:19:24,399 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 9] total 18 [2022-03-18 03:19:24,399 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-18 03:19:24,399 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [700431921] [2022-03-18 03:19:24,399 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [700431921] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 03:19:24,399 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 03:19:24,399 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-03-18 03:19:24,400 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1302935741] [2022-03-18 03:19:24,400 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-18 03:19:24,400 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-03-18 03:19:24,400 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-18 03:19:24,400 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-03-18 03:19:24,400 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=238, Unknown=0, NotChecked=0, Total=306 [2022-03-18 03:19:24,401 INFO L87 Difference]: Start difference. First operand 71 states and 74 transitions. Second operand has 13 states, 12 states have (on average 2.1666666666666665) internal successors, (26), 11 states have internal predecessors, (26), 7 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (14), 6 states have call predecessors, (14), 6 states have call successors, (14) [2022-03-18 03:19:24,771 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 03:19:24,771 INFO L93 Difference]: Finished difference Result 71 states and 74 transitions. [2022-03-18 03:19:24,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-03-18 03:19:24,771 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 2.1666666666666665) internal successors, (26), 11 states have internal predecessors, (26), 7 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (14), 6 states have call predecessors, (14), 6 states have call successors, (14) Word has length 86 [2022-03-18 03:19:24,771 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 03:19:24,771 INFO L225 Difference]: With dead ends: 71 [2022-03-18 03:19:24,772 INFO L226 Difference]: Without dead ends: 0 [2022-03-18 03:19:24,772 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 177 GetRequests, 153 SyntacticMatches, 2 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=116, Invalid=436, Unknown=0, NotChecked=0, Total=552 [2022-03-18 03:19:24,772 INFO L912 BasicCegarLoop]: 33 mSDtfsCounter, 15 mSDsluCounter, 242 mSDsCounter, 0 mSdLazyCounter, 118 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 275 SdHoareTripleChecker+Invalid, 185 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 118 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 49 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-18 03:19:24,773 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [15 Valid, 275 Invalid, 185 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 118 Invalid, 0 Unknown, 49 Unchecked, 0.2s Time] [2022-03-18 03:19:24,773 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-03-18 03:19:24,773 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-03-18 03:19:24,773 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) [2022-03-18 03:19:24,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-03-18 03:19:24,773 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 86 [2022-03-18 03:19:24,773 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 03:19:24,773 INFO L478 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-03-18 03:19:24,773 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 2.1666666666666665) internal successors, (26), 11 states have internal predecessors, (26), 7 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (14), 6 states have call predecessors, (14), 6 states have call successors, (14) [2022-03-18 03:19:24,773 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-03-18 03:19:24,774 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-03-18 03:19:24,775 INFO L788 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-03-18 03:19:24,792 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2022-03-18 03:19:24,986 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2022-03-18 03:19:24,987 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2022-03-18 03:19:28,233 INFO L882 garLoopResultBuilder]: For program point reach_errorEXIT(line 8) no Hoare annotation was computed. [2022-03-18 03:19:28,234 INFO L882 garLoopResultBuilder]: For program point reach_errorENTRY(line 8) no Hoare annotation was computed. [2022-03-18 03:19:28,234 INFO L882 garLoopResultBuilder]: For program point reach_errorFINAL(line 8) no Hoare annotation was computed. [2022-03-18 03:19:28,234 INFO L885 garLoopResultBuilder]: At program point assume_abort_if_notENTRY(lines 11 13) the Hoare annotation is: true [2022-03-18 03:19:28,234 INFO L878 garLoopResultBuilder]: At program point L12(line 12) the Hoare annotation is: (= assume_abort_if_not_~cond |assume_abort_if_not_#in~cond|) [2022-03-18 03:19:28,234 INFO L878 garLoopResultBuilder]: At program point L12-2(lines 11 13) the Hoare annotation is: (and (not (= |assume_abort_if_not_#in~cond| 0)) (= assume_abort_if_not_~cond |assume_abort_if_not_#in~cond|)) [2022-03-18 03:19:28,234 INFO L878 garLoopResultBuilder]: At program point assume_abort_if_notEXIT(lines 11 13) the Hoare annotation is: (and (not (= |assume_abort_if_not_#in~cond| 0)) (= assume_abort_if_not_~cond |assume_abort_if_not_#in~cond|)) [2022-03-18 03:19:28,234 INFO L878 garLoopResultBuilder]: At program point L29(line 29) the Hoare annotation is: (let ((.cse0 (mod main_~B~0 4294967296))) (and (<= (mod main_~A~0 4294967296) 1) (<= .cse0 1) (<= 1 .cse0))) [2022-03-18 03:19:28,234 INFO L878 garLoopResultBuilder]: At program point L60(line 60) the Hoare annotation is: (let ((.cse0 (mod main_~B~0 4294967296))) (and (= main_~d~0 .cse0) (<= .cse0 1) (<= 1 .cse0) (= main_~p~0 1))) [2022-03-18 03:19:28,234 INFO L885 garLoopResultBuilder]: At program point mainEXIT(lines 22 63) the Hoare annotation is: true [2022-03-18 03:19:28,234 INFO L878 garLoopResultBuilder]: At program point L54(lines 54 57) the Hoare annotation is: (let ((.cse6 (mod main_~B~0 4294967296))) (and (= (mod main_~A~0 4294967296) main_~r~0) (exists ((aux_div_aux_mod_aux_mod_aux_div_aux_mod_aux_mod_v_main_~d~0_41_36_77_99_64_103_247 Int) (aux_mod_aux_mod_aux_mod_aux_div_aux_mod_aux_mod_v_main_~d~0_41_36_77_99_64_103_247 Int) (aux_div_v_main_~d~0_41_36 Int) (aux_div_aux_mod_aux_div_aux_mod_aux_mod_v_main_~d~0_41_36_77_99_64_103 Int)) (let ((.cse5 (div (+ (- 1) (* (- 1) main_~r~0)) (- 2)))) (let ((.cse0 (* (- 2) aux_mod_aux_mod_aux_mod_aux_div_aux_mod_aux_mod_v_main_~d~0_41_36_77_99_64_103_247)) (.cse1 (* 8589934592 aux_div_aux_mod_aux_mod_aux_div_aux_mod_aux_mod_v_main_~d~0_41_36_77_99_64_103_247)) (.cse2 (* (- 2) .cse5)) (.cse4 (+ .cse5 aux_mod_aux_mod_aux_mod_aux_div_aux_mod_aux_mod_v_main_~d~0_41_36_77_99_64_103_247)) (.cse3 (* aux_div_aux_mod_aux_mod_aux_div_aux_mod_aux_mod_v_main_~d~0_41_36_77_99_64_103_247 4294967296))) (and (< aux_div_aux_mod_aux_mod_aux_div_aux_mod_aux_mod_v_main_~d~0_41_36_77_99_64_103_247 (+ (div (+ .cse0 .cse1 2 (* main_~d~0 2) .cse2) 8589934592) 1)) (<= aux_div_v_main_~d~0_41_36 main_~r~0) (<= .cse3 .cse4) (< aux_div_aux_mod_aux_div_aux_mod_aux_mod_v_main_~d~0_41_36_77_99_64_103 (+ (div (+ .cse0 .cse1 (* aux_div_v_main_~d~0_41_36 2) 1 .cse2) 8589934592) 1)) (<= (+ .cse3 main_~d~0) (+ (* 4294967296 aux_div_aux_mod_aux_div_aux_mod_aux_mod_v_main_~d~0_41_36_77_99_64_103) .cse5 aux_mod_aux_mod_aux_mod_aux_div_aux_mod_aux_mod_v_main_~d~0_41_36_77_99_64_103_247)) (<= 0 aux_mod_aux_mod_aux_mod_aux_div_aux_mod_aux_mod_v_main_~d~0_41_36_77_99_64_103_247) (<= .cse4 (+ .cse3 1)))))) (< main_~r~0 (+ (* main_~d~0 2) 1)) (<= 1 .cse6) (= main_~q~0 0) (<= .cse6 main_~r~0) (= main_~p~0 1))) [2022-03-18 03:19:28,235 INFO L878 garLoopResultBuilder]: At program point L54-2(lines 22 63) the Hoare annotation is: (let ((.cse8 (mod main_~B~0 4294967296))) (let ((.cse7 (<= .cse8 1)) (.cse10 (= main_~q~0 0)) (.cse6 (mod main_~A~0 4294967296)) (.cse9 (= main_~p~0 1))) (or (and (exists ((aux_div_aux_mod_aux_mod_aux_div_aux_mod_aux_mod_v_main_~d~0_41_36_77_99_64_103_247 Int) (aux_mod_aux_mod_aux_mod_aux_div_aux_mod_aux_mod_v_main_~d~0_41_36_77_99_64_103_247 Int) (aux_div_v_main_~d~0_41_36 Int) (aux_div_aux_mod_aux_div_aux_mod_aux_mod_v_main_~d~0_41_36_77_99_64_103 Int)) (let ((.cse1 (div (+ (- 1) (* (- 1) main_~d~0) (* (- 1) main_~r~0)) (- 2)))) (let ((.cse2 (+ .cse1 aux_mod_aux_mod_aux_mod_aux_div_aux_mod_aux_mod_v_main_~d~0_41_36_77_99_64_103_247)) (.cse0 (* aux_div_aux_mod_aux_mod_aux_div_aux_mod_aux_mod_v_main_~d~0_41_36_77_99_64_103_247 4294967296)) (.cse3 (* (- 2) aux_mod_aux_mod_aux_mod_aux_div_aux_mod_aux_mod_v_main_~d~0_41_36_77_99_64_103_247)) (.cse4 (* 8589934592 aux_div_aux_mod_aux_mod_aux_div_aux_mod_aux_mod_v_main_~d~0_41_36_77_99_64_103_247)) (.cse5 (* .cse1 (- 2)))) (and (<= aux_div_v_main_~d~0_41_36 (+ main_~d~0 main_~r~0)) (<= (+ .cse0 main_~d~0) (+ .cse1 (* 4294967296 aux_div_aux_mod_aux_div_aux_mod_aux_mod_v_main_~d~0_41_36_77_99_64_103) aux_mod_aux_mod_aux_mod_aux_div_aux_mod_aux_mod_v_main_~d~0_41_36_77_99_64_103_247)) (<= .cse0 .cse2) (<= .cse2 (+ .cse0 1)) (< aux_div_aux_mod_aux_div_aux_mod_aux_mod_v_main_~d~0_41_36_77_99_64_103 (+ (div (+ .cse3 .cse4 (* aux_div_v_main_~d~0_41_36 2) .cse5 1) 8589934592) 1)) (< aux_div_aux_mod_aux_mod_aux_div_aux_mod_aux_mod_v_main_~d~0_41_36_77_99_64_103_247 (+ (div (+ .cse3 .cse4 2 .cse5 (* main_~d~0 2)) 8589934592) 1)) (<= 0 aux_mod_aux_mod_aux_mod_aux_div_aux_mod_aux_mod_v_main_~d~0_41_36_77_99_64_103_247))))) (= (+ main_~d~0 main_~r~0) .cse6) .cse7 (< main_~r~0 (+ main_~d~0 1)) (= main_~q~0 1) (< .cse6 (* 2 .cse8)) .cse9) (and (= .cse6 main_~r~0) (= main_~p~0 2) (<= 1 .cse8) .cse10 (<= (div (* (- 1) main_~d~0) (- 2)) main_~r~0) (< 0 (+ (div (+ (* (- 1) main_~r~0) 1) 4294967296) 1)) (< .cse8 main_~d~0)) (and (= main_~d~0 .cse8) (< main_~r~0 .cse8) .cse7 .cse10 (<= .cse6 main_~r~0) .cse9)))) [2022-03-18 03:19:28,235 INFO L878 garLoopResultBuilder]: At program point L48(lines 46 58) the Hoare annotation is: (let ((.cse1 (mod main_~B~0 4294967296))) (let ((.cse9 (<= .cse1 1)) (.cse2 (= main_~q~0 0)) (.cse0 (mod main_~A~0 4294967296)) (.cse10 (= main_~p~0 1))) (or (and (= .cse0 main_~r~0) (< main_~r~0 (* 2 .cse1)) (= main_~p~0 2) .cse2 (<= (div (* (- 1) main_~d~0) (- 2)) main_~r~0) (< 0 (+ (div (+ (* (- 1) main_~r~0) 1) 4294967296) 1)) (< .cse1 main_~d~0)) (and (exists ((aux_div_aux_mod_aux_mod_aux_div_aux_mod_aux_mod_v_main_~d~0_41_36_77_99_64_103_247 Int) (aux_mod_aux_mod_aux_mod_aux_div_aux_mod_aux_mod_v_main_~d~0_41_36_77_99_64_103_247 Int) (aux_div_v_main_~d~0_41_36 Int) (aux_div_aux_mod_aux_div_aux_mod_aux_mod_v_main_~d~0_41_36_77_99_64_103 Int)) (let ((.cse4 (div (+ (- 1) (* (- 1) main_~d~0) (* (- 1) main_~r~0)) (- 2)))) (let ((.cse5 (+ .cse4 aux_mod_aux_mod_aux_mod_aux_div_aux_mod_aux_mod_v_main_~d~0_41_36_77_99_64_103_247)) (.cse3 (* aux_div_aux_mod_aux_mod_aux_div_aux_mod_aux_mod_v_main_~d~0_41_36_77_99_64_103_247 4294967296)) (.cse6 (* (- 2) aux_mod_aux_mod_aux_mod_aux_div_aux_mod_aux_mod_v_main_~d~0_41_36_77_99_64_103_247)) (.cse7 (* 8589934592 aux_div_aux_mod_aux_mod_aux_div_aux_mod_aux_mod_v_main_~d~0_41_36_77_99_64_103_247)) (.cse8 (* .cse4 (- 2)))) (and (<= aux_div_v_main_~d~0_41_36 (+ main_~d~0 main_~r~0)) (<= (+ .cse3 main_~d~0) (+ .cse4 (* 4294967296 aux_div_aux_mod_aux_div_aux_mod_aux_mod_v_main_~d~0_41_36_77_99_64_103) aux_mod_aux_mod_aux_mod_aux_div_aux_mod_aux_mod_v_main_~d~0_41_36_77_99_64_103_247)) (<= .cse3 .cse5) (<= .cse5 (+ .cse3 1)) (< aux_div_aux_mod_aux_div_aux_mod_aux_mod_v_main_~d~0_41_36_77_99_64_103 (+ (div (+ .cse6 .cse7 (* aux_div_v_main_~d~0_41_36 2) .cse8 1) 8589934592) 1)) (< aux_div_aux_mod_aux_mod_aux_div_aux_mod_aux_mod_v_main_~d~0_41_36_77_99_64_103_247 (+ (div (+ .cse6 .cse7 2 .cse8 (* main_~d~0 2)) 8589934592) 1)) (<= 0 aux_mod_aux_mod_aux_mod_aux_div_aux_mod_aux_mod_v_main_~d~0_41_36_77_99_64_103_247))))) (< 0 .cse1) (= (+ main_~d~0 main_~r~0) .cse0) .cse9 (< main_~r~0 (+ main_~d~0 1)) (= main_~q~0 1) .cse10) (and (= main_~d~0 .cse1) (< main_~r~0 .cse1) .cse9 .cse2 (<= .cse0 main_~r~0) .cse10)))) [2022-03-18 03:19:28,235 INFO L878 garLoopResultBuilder]: At program point L46-1(lines 46 58) the Hoare annotation is: (let ((.cse0 (mod main_~B~0 4294967296)) (.cse1 (mod main_~A~0 4294967296)) (.cse2 (= main_~p~0 1))) (or (and (= main_~d~0 .cse0) (< main_~r~0 .cse0) (<= .cse0 1) (= main_~q~0 0) (<= .cse1 main_~r~0) .cse2) (and (= .cse1 (+ main_~r~0 .cse0)) (exists ((aux_div_aux_mod_aux_mod_aux_div_aux_mod_aux_mod_v_main_~d~0_41_36_77_99_64_103_247 Int) (aux_mod_aux_mod_aux_mod_aux_div_aux_mod_aux_mod_v_main_~d~0_41_36_77_99_64_103_247 Int) (aux_div_v_main_~d~0_41_36 Int) (aux_div_aux_mod_aux_div_aux_mod_aux_mod_v_main_~d~0_41_36_77_99_64_103 Int)) (let ((.cse4 (div (+ (- 1) (* (- 1) main_~d~0) (* (- 1) main_~r~0)) (- 2)))) (let ((.cse5 (+ .cse4 aux_mod_aux_mod_aux_mod_aux_div_aux_mod_aux_mod_v_main_~d~0_41_36_77_99_64_103_247)) (.cse3 (* aux_div_aux_mod_aux_mod_aux_div_aux_mod_aux_mod_v_main_~d~0_41_36_77_99_64_103_247 4294967296)) (.cse6 (* (- 2) aux_mod_aux_mod_aux_mod_aux_div_aux_mod_aux_mod_v_main_~d~0_41_36_77_99_64_103_247)) (.cse7 (* 8589934592 aux_div_aux_mod_aux_mod_aux_div_aux_mod_aux_mod_v_main_~d~0_41_36_77_99_64_103_247)) (.cse8 (* .cse4 (- 2)))) (and (<= aux_div_v_main_~d~0_41_36 (+ main_~d~0 main_~r~0)) (<= (+ .cse3 main_~d~0) (+ .cse4 (* 4294967296 aux_div_aux_mod_aux_div_aux_mod_aux_mod_v_main_~d~0_41_36_77_99_64_103) aux_mod_aux_mod_aux_mod_aux_div_aux_mod_aux_mod_v_main_~d~0_41_36_77_99_64_103_247)) (<= .cse3 .cse5) (<= .cse5 (+ .cse3 1)) (< aux_div_aux_mod_aux_div_aux_mod_aux_mod_v_main_~d~0_41_36_77_99_64_103 (+ (div (+ .cse6 .cse7 (* aux_div_v_main_~d~0_41_36 2) .cse8 1) 8589934592) 1)) (< aux_div_aux_mod_aux_mod_aux_div_aux_mod_aux_mod_v_main_~d~0_41_36_77_99_64_103_247 (+ (div (+ .cse6 .cse7 2 .cse8 (* main_~d~0 2)) 8589934592) 1)) (<= 0 aux_mod_aux_mod_aux_mod_aux_div_aux_mod_aux_mod_v_main_~d~0_41_36_77_99_64_103_247))))) (= (+ main_~d~0 main_~r~0) .cse1) (< main_~r~0 (+ main_~d~0 1)) (= main_~q~0 1) .cse2))) [2022-03-18 03:19:28,235 INFO L885 garLoopResultBuilder]: At program point mainFINAL(lines 22 63) the Hoare annotation is: true [2022-03-18 03:19:28,235 INFO L878 garLoopResultBuilder]: At program point L38(line 38) the Hoare annotation is: (let ((.cse10 (* (- 1) main_~d~0))) (let ((.cse6 (div .cse10 (- 2))) (.cse7 (mod main_~B~0 4294967296))) (let ((.cse0 (= (mod main_~A~0 4294967296) main_~r~0)) (.cse1 (= main_~d~0 (* main_~p~0 .cse7))) (.cse2 (<= 0 .cse6)) (.cse9 (<= .cse7 1)) (.cse3 (<= 1 .cse7)) (.cse4 (= (mod main_~d~0 2) 0)) (.cse5 (= main_~q~0 0)) (.cse8 (< 0 (+ (div (+ (* (- 1) main_~r~0) 1) 4294967296) 1)))) (or (and .cse0 .cse1 .cse2 .cse3 .cse4 .cse5 (<= .cse6 main_~r~0) (<= .cse7 main_~r~0) .cse8) (and .cse0 .cse1 .cse9 .cse3 .cse5 .cse8 (= main_~p~0 1)) (and (= main_~A~0 (+ main_~r~0 (* (div main_~A~0 4294967296) 4294967296))) (<= (div main_~r~0 (- 2)) (div .cse10 4)) .cse1 .cse2 .cse9 .cse3 .cse4 .cse5 .cse8))))) [2022-03-18 03:19:28,235 INFO L878 garLoopResultBuilder]: At program point L36-2(lines 36 44) the Hoare annotation is: (let ((.cse10 (* (- 1) main_~d~0))) (let ((.cse6 (div .cse10 (- 2))) (.cse7 (mod main_~B~0 4294967296))) (let ((.cse0 (= (mod main_~A~0 4294967296) main_~r~0)) (.cse1 (= main_~d~0 (* main_~p~0 .cse7))) (.cse2 (<= 0 .cse6)) (.cse9 (<= .cse7 1)) (.cse3 (<= 1 .cse7)) (.cse4 (= (mod main_~d~0 2) 0)) (.cse5 (= main_~q~0 0)) (.cse8 (< 0 (+ (div (+ (* (- 1) main_~r~0) 1) 4294967296) 1)))) (or (and .cse0 .cse1 .cse2 .cse3 .cse4 .cse5 (<= .cse6 main_~r~0) (<= .cse7 main_~r~0) .cse8) (and .cse0 .cse1 .cse9 .cse3 .cse5 .cse8 (= main_~p~0 1)) (and (= main_~A~0 (+ main_~r~0 (* (div main_~A~0 4294967296) 4294967296))) (<= (div main_~r~0 (- 2)) (div .cse10 4)) .cse1 .cse2 .cse9 .cse3 .cse4 .cse5 .cse8))))) [2022-03-18 03:19:28,235 INFO L885 garLoopResultBuilder]: At program point mainENTRY(lines 22 63) the Hoare annotation is: true [2022-03-18 03:19:28,235 INFO L885 garLoopResultBuilder]: At program point L61(line 61) the Hoare annotation is: true [2022-03-18 03:19:28,235 INFO L878 garLoopResultBuilder]: At program point L28(line 28) the Hoare annotation is: (<= (mod main_~A~0 4294967296) 1) [2022-03-18 03:19:28,235 INFO L878 garLoopResultBuilder]: At program point L28-1(line 28) the Hoare annotation is: (and (<= (mod main_~A~0 4294967296) 1) (<= (mod main_~B~0 4294967296) 1)) [2022-03-18 03:19:28,235 INFO L885 garLoopResultBuilder]: At program point L26(line 26) the Hoare annotation is: true [2022-03-18 03:19:28,235 INFO L878 garLoopResultBuilder]: At program point L26-1(line 26) the Hoare annotation is: (<= (mod main_~A~0 4294967296) 1) [2022-03-18 03:19:28,235 INFO L878 garLoopResultBuilder]: At program point L47(line 47) the Hoare annotation is: (let ((.cse8 (mod main_~B~0 4294967296))) (let ((.cse7 (<= .cse8 1)) (.cse10 (= main_~q~0 0)) (.cse6 (mod main_~A~0 4294967296)) (.cse9 (= main_~p~0 1))) (or (and (exists ((aux_div_aux_mod_aux_mod_aux_div_aux_mod_aux_mod_v_main_~d~0_41_36_77_99_64_103_247 Int) (aux_mod_aux_mod_aux_mod_aux_div_aux_mod_aux_mod_v_main_~d~0_41_36_77_99_64_103_247 Int) (aux_div_v_main_~d~0_41_36 Int) (aux_div_aux_mod_aux_div_aux_mod_aux_mod_v_main_~d~0_41_36_77_99_64_103 Int)) (let ((.cse1 (div (+ (- 1) (* (- 1) main_~d~0) (* (- 1) main_~r~0)) (- 2)))) (let ((.cse2 (+ .cse1 aux_mod_aux_mod_aux_mod_aux_div_aux_mod_aux_mod_v_main_~d~0_41_36_77_99_64_103_247)) (.cse0 (* aux_div_aux_mod_aux_mod_aux_div_aux_mod_aux_mod_v_main_~d~0_41_36_77_99_64_103_247 4294967296)) (.cse3 (* (- 2) aux_mod_aux_mod_aux_mod_aux_div_aux_mod_aux_mod_v_main_~d~0_41_36_77_99_64_103_247)) (.cse4 (* 8589934592 aux_div_aux_mod_aux_mod_aux_div_aux_mod_aux_mod_v_main_~d~0_41_36_77_99_64_103_247)) (.cse5 (* .cse1 (- 2)))) (and (<= aux_div_v_main_~d~0_41_36 (+ main_~d~0 main_~r~0)) (<= (+ .cse0 main_~d~0) (+ .cse1 (* 4294967296 aux_div_aux_mod_aux_div_aux_mod_aux_mod_v_main_~d~0_41_36_77_99_64_103) aux_mod_aux_mod_aux_mod_aux_div_aux_mod_aux_mod_v_main_~d~0_41_36_77_99_64_103_247)) (<= .cse0 .cse2) (<= .cse2 (+ .cse0 1)) (< aux_div_aux_mod_aux_div_aux_mod_aux_mod_v_main_~d~0_41_36_77_99_64_103 (+ (div (+ .cse3 .cse4 (* aux_div_v_main_~d~0_41_36 2) .cse5 1) 8589934592) 1)) (< aux_div_aux_mod_aux_mod_aux_div_aux_mod_aux_mod_v_main_~d~0_41_36_77_99_64_103_247 (+ (div (+ .cse3 .cse4 2 .cse5 (* main_~d~0 2)) 8589934592) 1)) (<= 0 aux_mod_aux_mod_aux_mod_aux_div_aux_mod_aux_mod_v_main_~d~0_41_36_77_99_64_103_247))))) (= (+ main_~d~0 main_~r~0) .cse6) .cse7 (< main_~r~0 (+ main_~d~0 1)) (= main_~q~0 1) (< .cse6 (* 2 .cse8)) .cse9) (and (= .cse6 main_~r~0) (= main_~p~0 2) (<= 1 .cse8) .cse10 (<= (div (* (- 1) main_~d~0) (- 2)) main_~r~0) (< 0 (+ (div (+ (* (- 1) main_~r~0) 1) 4294967296) 1)) (< .cse8 main_~d~0)) (and (= main_~d~0 .cse8) (< main_~r~0 .cse8) .cse7 .cse10 (<= .cse6 main_~r~0) .cse9)))) [2022-03-18 03:19:28,236 INFO L878 garLoopResultBuilder]: At program point L47-1(line 47) the Hoare annotation is: (let ((.cse8 (mod main_~B~0 4294967296))) (let ((.cse7 (<= .cse8 1)) (.cse10 (= main_~q~0 0)) (.cse6 (mod main_~A~0 4294967296)) (.cse9 (= main_~p~0 1))) (or (and (exists ((aux_div_aux_mod_aux_mod_aux_div_aux_mod_aux_mod_v_main_~d~0_41_36_77_99_64_103_247 Int) (aux_mod_aux_mod_aux_mod_aux_div_aux_mod_aux_mod_v_main_~d~0_41_36_77_99_64_103_247 Int) (aux_div_v_main_~d~0_41_36 Int) (aux_div_aux_mod_aux_div_aux_mod_aux_mod_v_main_~d~0_41_36_77_99_64_103 Int)) (let ((.cse1 (div (+ (- 1) (* (- 1) main_~d~0) (* (- 1) main_~r~0)) (- 2)))) (let ((.cse2 (+ .cse1 aux_mod_aux_mod_aux_mod_aux_div_aux_mod_aux_mod_v_main_~d~0_41_36_77_99_64_103_247)) (.cse0 (* aux_div_aux_mod_aux_mod_aux_div_aux_mod_aux_mod_v_main_~d~0_41_36_77_99_64_103_247 4294967296)) (.cse3 (* (- 2) aux_mod_aux_mod_aux_mod_aux_div_aux_mod_aux_mod_v_main_~d~0_41_36_77_99_64_103_247)) (.cse4 (* 8589934592 aux_div_aux_mod_aux_mod_aux_div_aux_mod_aux_mod_v_main_~d~0_41_36_77_99_64_103_247)) (.cse5 (* .cse1 (- 2)))) (and (<= aux_div_v_main_~d~0_41_36 (+ main_~d~0 main_~r~0)) (<= (+ .cse0 main_~d~0) (+ .cse1 (* 4294967296 aux_div_aux_mod_aux_div_aux_mod_aux_mod_v_main_~d~0_41_36_77_99_64_103) aux_mod_aux_mod_aux_mod_aux_div_aux_mod_aux_mod_v_main_~d~0_41_36_77_99_64_103_247)) (<= .cse0 .cse2) (<= .cse2 (+ .cse0 1)) (< aux_div_aux_mod_aux_div_aux_mod_aux_mod_v_main_~d~0_41_36_77_99_64_103 (+ (div (+ .cse3 .cse4 (* aux_div_v_main_~d~0_41_36 2) .cse5 1) 8589934592) 1)) (< aux_div_aux_mod_aux_mod_aux_div_aux_mod_aux_mod_v_main_~d~0_41_36_77_99_64_103_247 (+ (div (+ .cse3 .cse4 2 .cse5 (* main_~d~0 2)) 8589934592) 1)) (<= 0 aux_mod_aux_mod_aux_mod_aux_div_aux_mod_aux_mod_v_main_~d~0_41_36_77_99_64_103_247))))) (= (+ main_~d~0 main_~r~0) .cse6) .cse7 (< main_~r~0 (+ main_~d~0 1)) (= main_~q~0 1) (< .cse6 (* 2 .cse8)) .cse9) (and (= .cse6 main_~r~0) (= main_~p~0 2) (<= 1 .cse8) .cse10 (<= (div (* (- 1) main_~d~0) (- 2)) main_~r~0) (< 0 (+ (div (+ (* (- 1) main_~r~0) 1) 4294967296) 1)) (< .cse8 main_~d~0)) (and (= main_~d~0 .cse8) (< main_~r~0 .cse8) .cse7 .cse10 (<= .cse6 main_~r~0) .cse9)))) [2022-03-18 03:19:28,236 INFO L878 garLoopResultBuilder]: At program point L39(lines 36 44) the Hoare annotation is: (let ((.cse10 (* (- 1) main_~d~0))) (let ((.cse6 (div .cse10 (- 2))) (.cse7 (mod main_~B~0 4294967296))) (let ((.cse0 (= (mod main_~A~0 4294967296) main_~r~0)) (.cse1 (= main_~d~0 (* main_~p~0 .cse7))) (.cse2 (<= 0 .cse6)) (.cse9 (<= .cse7 1)) (.cse3 (<= 1 .cse7)) (.cse4 (= (mod main_~d~0 2) 0)) (.cse5 (= main_~q~0 0)) (.cse8 (< 0 (+ (div (+ (* (- 1) main_~r~0) 1) 4294967296) 1)))) (or (and .cse0 .cse1 .cse2 .cse3 .cse4 .cse5 (<= .cse6 main_~r~0) (<= .cse7 main_~r~0) .cse8) (and .cse0 .cse1 .cse9 .cse3 .cse5 .cse8 (= main_~p~0 1)) (and (= main_~A~0 (+ main_~r~0 (* (div main_~A~0 4294967296) 4294967296))) (<= (div main_~r~0 (- 2)) (div .cse10 4)) .cse1 .cse2 .cse9 .cse3 .cse4 .cse5 .cse8))))) [2022-03-18 03:19:28,236 INFO L878 garLoopResultBuilder]: At program point L37(line 37) the Hoare annotation is: (let ((.cse10 (* (- 1) main_~d~0))) (let ((.cse6 (div .cse10 (- 2))) (.cse7 (mod main_~B~0 4294967296))) (let ((.cse0 (= (mod main_~A~0 4294967296) main_~r~0)) (.cse1 (= main_~d~0 (* main_~p~0 .cse7))) (.cse2 (<= 0 .cse6)) (.cse9 (<= .cse7 1)) (.cse3 (<= 1 .cse7)) (.cse4 (= (mod main_~d~0 2) 0)) (.cse5 (= main_~q~0 0)) (.cse8 (< 0 (+ (div (+ (* (- 1) main_~r~0) 1) 4294967296) 1)))) (or (and .cse0 .cse1 .cse2 .cse3 .cse4 .cse5 (<= .cse6 main_~r~0) (<= .cse7 main_~r~0) .cse8) (and .cse0 .cse1 .cse9 .cse3 .cse5 .cse8 (= main_~p~0 1)) (and (= main_~A~0 (+ main_~r~0 (* (div main_~A~0 4294967296) 4294967296))) (<= (div main_~r~0 (- 2)) (div .cse10 4)) .cse1 .cse2 .cse9 .cse3 .cse4 .cse5 .cse8))))) [2022-03-18 03:19:28,236 INFO L878 garLoopResultBuilder]: At program point L37-1(line 37) the Hoare annotation is: (let ((.cse10 (* (- 1) main_~d~0))) (let ((.cse6 (div .cse10 (- 2))) (.cse7 (mod main_~B~0 4294967296))) (let ((.cse0 (= (mod main_~A~0 4294967296) main_~r~0)) (.cse1 (= main_~d~0 (* main_~p~0 .cse7))) (.cse2 (<= 0 .cse6)) (.cse9 (<= .cse7 1)) (.cse3 (<= 1 .cse7)) (.cse4 (= (mod main_~d~0 2) 0)) (.cse5 (= main_~q~0 0)) (.cse8 (< 0 (+ (div (+ (* (- 1) main_~r~0) 1) 4294967296) 1)))) (or (and .cse0 .cse1 .cse2 .cse3 .cse4 .cse5 (<= .cse6 main_~r~0) (<= .cse7 main_~r~0) .cse8) (and .cse0 .cse1 .cse9 .cse3 .cse5 .cse8 (= main_~p~0 1)) (and (= main_~A~0 (+ main_~r~0 (* (div main_~A~0 4294967296) 4294967296))) (<= (div main_~r~0 (- 2)) (div .cse10 4)) .cse1 .cse2 .cse9 .cse3 .cse4 .cse5 .cse8))))) [2022-03-18 03:19:28,236 INFO L885 garLoopResultBuilder]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2022-03-18 03:19:28,236 INFO L878 garLoopResultBuilder]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|)) [2022-03-18 03:19:28,236 INFO L885 garLoopResultBuilder]: At program point ULTIMATE.initEXIT(line -1) the Hoare annotation is: true [2022-03-18 03:19:28,236 INFO L885 garLoopResultBuilder]: At program point ULTIMATE.startEXIT(line -1) the Hoare annotation is: true [2022-03-18 03:19:28,236 INFO L885 garLoopResultBuilder]: At program point L-1(line -1) the Hoare annotation is: true [2022-03-18 03:19:28,236 INFO L885 garLoopResultBuilder]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2022-03-18 03:19:28,236 INFO L885 garLoopResultBuilder]: At program point ULTIMATE.startFINAL(line -1) the Hoare annotation is: true [2022-03-18 03:19:28,236 INFO L878 garLoopResultBuilder]: At program point L16(lines 16 17) the Hoare annotation is: (= |__VERIFIER_assert_#in~cond| 0) [2022-03-18 03:19:28,236 INFO L878 garLoopResultBuilder]: At program point L15(lines 15 18) the Hoare annotation is: (and (or (not (<= 1 |__VERIFIER_assert_#in~cond|)) (<= 1 __VERIFIER_assert_~cond)) (or (= |__VERIFIER_assert_#in~cond| 0) (not (= __VERIFIER_assert_~cond 0)))) [2022-03-18 03:19:28,236 INFO L885 garLoopResultBuilder]: At program point __VERIFIER_assertENTRY(lines 14 20) the Hoare annotation is: true [2022-03-18 03:19:28,236 INFO L878 garLoopResultBuilder]: At program point L15-2(lines 14 20) the Hoare annotation is: (and (or (not (<= 1 |__VERIFIER_assert_#in~cond|)) (<= 1 __VERIFIER_assert_~cond)) (or (= |__VERIFIER_assert_#in~cond| 0) (not (= __VERIFIER_assert_~cond 0)))) [2022-03-18 03:19:28,237 INFO L878 garLoopResultBuilder]: At program point __VERIFIER_assertEXIT(lines 14 20) the Hoare annotation is: (and (or (not (<= 1 |__VERIFIER_assert_#in~cond|)) (<= 1 __VERIFIER_assert_~cond)) (or (= |__VERIFIER_assert_#in~cond| 0) (not (= __VERIFIER_assert_~cond 0)))) [2022-03-18 03:19:28,237 INFO L878 garLoopResultBuilder]: At program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 17) the Hoare annotation is: (= |__VERIFIER_assert_#in~cond| 0) [2022-03-18 03:19:28,239 INFO L718 BasicCegarLoop]: Path program histogram: [4, 4, 2, 2, 2, 2, 2, 2, 2] [2022-03-18 03:19:28,240 INFO L180 ceAbstractionStarter]: Computing trace abstraction results [2022-03-18 03:19:28,259 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.03 03:19:28 BoogieIcfgContainer [2022-03-18 03:19:28,259 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-03-18 03:19:28,260 INFO L158 Benchmark]: Toolchain (without parser) took 21895.46ms. Allocated memory was 169.9MB in the beginning and 362.8MB in the end (delta: 192.9MB). Free memory was 115.7MB in the beginning and 232.9MB in the end (delta: -117.2MB). Peak memory consumption was 188.8MB. Max. memory is 8.0GB. [2022-03-18 03:19:28,260 INFO L158 Benchmark]: CDTParser took 0.12ms. Allocated memory is still 169.9MB. Free memory was 131.9MB in the beginning and 131.8MB in the end (delta: 126.1kB). There was no memory consumed. Max. memory is 8.0GB. [2022-03-18 03:19:28,260 INFO L158 Benchmark]: CACSL2BoogieTranslator took 247.33ms. Allocated memory was 169.9MB in the beginning and 209.7MB in the end (delta: 39.8MB). Free memory was 115.6MB in the beginning and 181.7MB in the end (delta: -66.1MB). Peak memory consumption was 14.5MB. Max. memory is 8.0GB. [2022-03-18 03:19:28,261 INFO L158 Benchmark]: Boogie Preprocessor took 33.97ms. Allocated memory is still 209.7MB. Free memory was 181.7MB in the beginning and 180.3MB in the end (delta: 1.5MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-03-18 03:19:28,261 INFO L158 Benchmark]: RCFGBuilder took 280.73ms. Allocated memory is still 209.7MB. Free memory was 180.3MB in the beginning and 169.2MB in the end (delta: 11.0MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. [2022-03-18 03:19:28,262 INFO L158 Benchmark]: TraceAbstraction took 21312.88ms. Allocated memory was 209.7MB in the beginning and 362.8MB in the end (delta: 153.1MB). Free memory was 168.7MB in the beginning and 232.9MB in the end (delta: -64.2MB). Peak memory consumption was 201.1MB. Max. memory is 8.0GB. [2022-03-18 03:19:28,263 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12ms. Allocated memory is still 169.9MB. Free memory was 131.9MB in the beginning and 131.8MB in the end (delta: 126.1kB). There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 247.33ms. Allocated memory was 169.9MB in the beginning and 209.7MB in the end (delta: 39.8MB). Free memory was 115.6MB in the beginning and 181.7MB in the end (delta: -66.1MB). Peak memory consumption was 14.5MB. Max. memory is 8.0GB. * Boogie Preprocessor took 33.97ms. Allocated memory is still 209.7MB. Free memory was 181.7MB in the beginning and 180.3MB in the end (delta: 1.5MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 280.73ms. Allocated memory is still 209.7MB. Free memory was 180.3MB in the beginning and 169.2MB in the end (delta: 11.0MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. * TraceAbstraction took 21312.88ms. Allocated memory was 209.7MB in the beginning and 362.8MB in the end (delta: 153.1MB). Free memory was 168.7MB in the beginning and 232.9MB in the end (delta: -64.2MB). Peak memory consumption was 201.1MB. 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: 17]: 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, 41 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 21.2s, OverallIterations: 11, TraceHistogramMax: 11, PathProgramHistogramMax: 4, EmptinessCheckTime: 0.0s, AutomataDifference: 2.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 3.2s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 304 SdHoareTripleChecker+Valid, 1.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 245 mSDsluCounter, 2055 SdHoareTripleChecker+Invalid, 1.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 49 IncrementalHoareTripleChecker+Unchecked, 1631 mSDsCounter, 204 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1303 IncrementalHoareTripleChecker+Invalid, 1556 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 204 mSolverCounterUnsat, 424 mSDtfsCounter, 1303 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1067 GetRequests, 926 SyntacticMatches, 9 SemanticMatches, 132 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 274 ImplicationChecksByTransitivity, 3.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=96occurred in iteration=8, InterpolantAutomatonStates: 94, 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, 11 MinimizatonAttempts, 20 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 38 LocationsWithAnnotation, 342 PreInvPairs, 453 NumberOfFragments, 2155 HoareAnnotationTreeSize, 342 FomulaSimplifications, 447 FormulaSimplificationTreeSizeReduction, 0.1s HoareSimplificationTime, 38 FomulaSimplificationsInter, 1494 FormulaSimplificationTreeSizeReductionInter, 3.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: No data available, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 36]: Loop Invariant Derived loop invariant: (((((((((A % 4294967296 == r && d == p * (B % 4294967296)) && 0 <= -1 * d / -2) && 1 <= B % 4294967296) && d % 2 == 0) && q == 0) && -1 * d / -2 <= r) && B % 4294967296 <= r) && 0 < (-1 * r + 1) / 4294967296 + 1) || ((((((A % 4294967296 == r && d == p * (B % 4294967296)) && B % 4294967296 <= 1) && 1 <= B % 4294967296) && q == 0) && 0 < (-1 * r + 1) / 4294967296 + 1) && p == 1)) || ((((((((A == r + A / 4294967296 * 4294967296 && r / -2 <= -1 * d / 4) && d == p * (B % 4294967296)) && 0 <= -1 * d / -2) && B % 4294967296 <= 1) && 1 <= B % 4294967296) && d % 2 == 0) && q == 0) && 0 < (-1 * r + 1) / 4294967296 + 1) - ProcedureContractResult [Line: 11]: Procedure Contract for assume_abort_if_not Derived contract for procedure assume_abort_if_not: !(\old(cond) == 0) && cond == \old(cond) - ProcedureContractResult [Line: 22]: Procedure Contract for main Derived contract for procedure main: 1 - ProcedureContractResult [Line: 14]: Procedure Contract for __VERIFIER_assert Derived contract for procedure __VERIFIER_assert: (!(1 <= \old(cond)) || 1 <= cond) && (\old(cond) == 0 || !(cond == 0)) RESULT: Ultimate proved your program to be correct! [2022-03-18 03:19:28,297 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...