/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data --core.log.level.for.class de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN -tc ../../../trunk/examples/toolchains/AutomizerCTransformed.xml -s ../../../trunk/examples/settings/automizer/LoopAccelerationJordanC.epf -i ../../../trunk/examples/svcomp/loop-crafted/simple_array_index_value_2.i -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-7968f31 [2022-03-17 14:56:09,076 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-03-17 14:56:09,078 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-03-17 14:56:09,127 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-03-17 14:56:09,165 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-03-17 14:56:09,165 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-03-17 14:56:09,167 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-03-17 14:56:09,167 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/LoopAccelerationJordanC.epf [2022-03-17 14:56:09,176 INFO L113 SettingsManager]: Loading preferences was successful [2022-03-17 14:56:09,177 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-03-17 14:56:09,178 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-03-17 14:56:09,178 INFO L138 SettingsManager]: * sizeof long=4 [2022-03-17 14:56:09,179 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-03-17 14:56:09,179 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-03-17 14:56:09,179 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-03-17 14:56:09,179 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-03-17 14:56:09,179 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-03-17 14:56:09,180 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-03-17 14:56:09,180 INFO L138 SettingsManager]: * sizeof long double=12 [2022-03-17 14:56:09,180 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-03-17 14:56:09,180 INFO L138 SettingsManager]: * Use constant arrays=true [2022-03-17 14:56:09,180 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-03-17 14:56:09,180 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-03-17 14:56:09,180 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-03-17 14:56:09,180 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-03-17 14:56:09,180 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-03-17 14:56:09,180 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-03-17 14:56:09,181 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-03-17 14:56:09,181 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-03-17 14:56:09,181 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-03-17 14:56:09,181 INFO L138 SettingsManager]: * TransformationType=LOOP_ACCELERATION_JORDAN WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-03-17 14:56:09,382 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-03-17 14:56:09,402 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-03-17 14:56:09,403 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-03-17 14:56:09,404 INFO L271 PluginConnector]: Initializing CDTParser... [2022-03-17 14:56:09,406 INFO L275 PluginConnector]: CDTParser initialized [2022-03-17 14:56:09,407 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-crafted/simple_array_index_value_2.i [2022-03-17 14:56:09,455 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d16e7aa3f/45264817043c4db9b5c7671861089824/FLAGf6b506a24 [2022-03-17 14:56:09,795 INFO L306 CDTParser]: Found 1 translation units. [2022-03-17 14:56:09,795 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-crafted/simple_array_index_value_2.i [2022-03-17 14:56:09,799 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d16e7aa3f/45264817043c4db9b5c7671861089824/FLAGf6b506a24 [2022-03-17 14:56:09,808 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d16e7aa3f/45264817043c4db9b5c7671861089824 [2022-03-17 14:56:09,810 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-03-17 14:56:09,811 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-03-17 14:56:09,821 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-03-17 14:56:09,822 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-03-17 14:56:09,824 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-03-17 14:56:09,824 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.03 02:56:09" (1/1) ... [2022-03-17 14:56:09,825 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5fac8cfb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 02:56:09, skipping insertion in model container [2022-03-17 14:56:09,825 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.03 02:56:09" (1/1) ... [2022-03-17 14:56:09,829 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-03-17 14:56:09,838 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-03-17 14:56:09,939 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loop-crafted/simple_array_index_value_2.i[919,932] [2022-03-17 14:56:09,948 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-03-17 14:56:09,952 INFO L203 MainTranslator]: Completed pre-run [2022-03-17 14:56:09,959 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loop-crafted/simple_array_index_value_2.i[919,932] [2022-03-17 14:56:09,962 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-03-17 14:56:09,971 INFO L208 MainTranslator]: Completed translation [2022-03-17 14:56:09,971 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 02:56:09 WrapperNode [2022-03-17 14:56:09,971 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-03-17 14:56:09,972 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-03-17 14:56:09,972 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-03-17 14:56:09,972 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-03-17 14:56:09,979 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 02:56:09" (1/1) ... [2022-03-17 14:56:09,979 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 02:56:09" (1/1) ... [2022-03-17 14:56:09,983 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 02:56:09" (1/1) ... [2022-03-17 14:56:09,983 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 02:56:09" (1/1) ... [2022-03-17 14:56:09,987 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 02:56:09" (1/1) ... [2022-03-17 14:56:09,989 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 02:56:09" (1/1) ... [2022-03-17 14:56:09,990 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 02:56:09" (1/1) ... [2022-03-17 14:56:09,991 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-03-17 14:56:09,992 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-03-17 14:56:09,992 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-03-17 14:56:09,992 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-03-17 14:56:09,992 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 02:56:09" (1/1) ... [2022-03-17 14:56:09,997 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-03-17 14:56:10,006 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-17 14:56:10,015 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) [2022-03-17 14:56:10,016 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 [2022-03-17 14:56:10,037 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2022-03-17 14:56:10,037 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-03-17 14:56:10,037 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2022-03-17 14:56:10,037 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-03-17 14:56:10,038 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-03-17 14:56:10,038 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2022-03-17 14:56:10,038 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2022-03-17 14:56:10,038 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2022-03-17 14:56:10,038 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2022-03-17 14:56:10,038 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2022-03-17 14:56:10,038 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2022-03-17 14:56:10,038 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-03-17 14:56:10,038 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-03-17 14:56:10,038 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-03-17 14:56:10,038 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uint [2022-03-17 14:56:10,038 INFO L130 BoogieDeclarations]: Found specification of procedure main [2022-03-17 14:56:10,039 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-03-17 14:56:10,039 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-03-17 14:56:10,039 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-03-17 14:56:10,039 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-03-17 14:56:10,039 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2022-03-17 14:56:10,039 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-03-17 14:56:10,039 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-03-17 14:56:10,085 INFO L234 CfgBuilder]: Building ICFG [2022-03-17 14:56:10,086 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-03-17 14:56:10,176 INFO L275 CfgBuilder]: Performing block encoding [2022-03-17 14:56:10,180 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-03-17 14:56:10,181 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2022-03-17 14:56:10,182 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.03 02:56:10 BoogieIcfgContainer [2022-03-17 14:56:10,182 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-03-17 14:56:10,183 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-03-17 14:56:10,183 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-03-17 14:56:10,183 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-03-17 14:56:10,185 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.03 02:56:10" (1/1) ... [2022-03-17 14:56:10,196 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 17.03 02:56:10 BasicIcfg [2022-03-17 14:56:10,196 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-03-17 14:56:10,197 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-03-17 14:56:10,198 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-03-17 14:56:10,201 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-03-17 14:56:10,201 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.03 02:56:09" (1/4) ... [2022-03-17 14:56:10,202 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3c89d286 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.03 02:56:10, skipping insertion in model container [2022-03-17 14:56:10,202 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 02:56:09" (2/4) ... [2022-03-17 14:56:10,202 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3c89d286 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.03 02:56:10, skipping insertion in model container [2022-03-17 14:56:10,202 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.03 02:56:10" (3/4) ... [2022-03-17 14:56:10,202 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3c89d286 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 17.03 02:56:10, skipping insertion in model container [2022-03-17 14:56:10,202 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 17.03 02:56:10" (4/4) ... [2022-03-17 14:56:10,203 INFO L111 eAbstractionObserver]: Analyzing ICFG simple_array_index_value_2.iJordan [2022-03-17 14:56:10,207 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:ForwardPredicates Determinization: PREDICATE_ABSTRACTION [2022-03-17 14:56:10,207 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-03-17 14:56:10,243 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-03-17 14:56:10,248 INFO L340 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=ForwardPredicates, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP [2022-03-17 14:56:10,248 INFO L341 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-03-17 14:56:10,257 INFO L276 IsEmpty]: Start isEmpty. Operand has 30 states, 20 states have (on average 1.35) internal successors, (27), 21 states have internal predecessors, (27), 4 states have call successors, (4), 4 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-03-17 14:56:10,274 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-03-17 14:56:10,274 INFO L492 BasicCegarLoop]: Found error trace [2022-03-17 14:56:10,274 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-17 14:56:10,275 INFO L403 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-17 14:56:10,278 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-17 14:56:10,279 INFO L85 PathProgramCache]: Analyzing trace with hash -183287108, now seen corresponding path program 1 times [2022-03-17 14:56:10,285 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-17 14:56:10,285 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1755713754] [2022-03-17 14:56:10,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-17 14:56:10,286 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-17 14:56:10,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 14:56:10,468 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-17 14:56:10,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 14:56:10,477 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-17 14:56:10,478 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-17 14:56:10,478 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1755713754] [2022-03-17 14:56:10,479 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1755713754] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-17 14:56:10,479 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-17 14:56:10,479 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-03-17 14:56:10,480 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1104927715] [2022-03-17 14:56:10,481 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-17 14:56:10,485 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-03-17 14:56:10,486 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-17 14:56:10,508 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-03-17 14:56:10,509 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-03-17 14:56:10,511 INFO L87 Difference]: Start difference. First operand has 30 states, 20 states have (on average 1.35) internal successors, (27), 21 states have internal predecessors, (27), 4 states have call successors, (4), 4 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Second operand has 4 states, 4 states have (on average 2.25) internal successors, (9), 3 states have internal predecessors, (9), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-17 14:56:10,614 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-17 14:56:10,614 INFO L93 Difference]: Finished difference Result 38 states and 41 transitions. [2022-03-17 14:56:10,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-03-17 14:56:10,617 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 3 states have internal predecessors, (9), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 13 [2022-03-17 14:56:10,617 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-17 14:56:10,629 INFO L225 Difference]: With dead ends: 38 [2022-03-17 14:56:10,629 INFO L226 Difference]: Without dead ends: 33 [2022-03-17 14:56:10,630 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-03-17 14:56:10,634 INFO L912 BasicCegarLoop]: 24 mSDtfsCounter, 28 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 33 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-17 14:56:10,634 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [30 Valid, 33 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-17 14:56:10,647 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2022-03-17 14:56:10,657 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 26. [2022-03-17 14:56:10,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 18 states have (on average 1.1111111111111112) internal successors, (20), 18 states have internal predecessors, (20), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-03-17 14:56:10,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 27 transitions. [2022-03-17 14:56:10,659 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 27 transitions. Word has length 13 [2022-03-17 14:56:10,660 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-17 14:56:10,660 INFO L478 AbstractCegarLoop]: Abstraction has 26 states and 27 transitions. [2022-03-17 14:56:10,660 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 3 states have internal predecessors, (9), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-17 14:56:10,660 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 27 transitions. [2022-03-17 14:56:10,660 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-03-17 14:56:10,661 INFO L492 BasicCegarLoop]: Found error trace [2022-03-17 14:56:10,661 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-17 14:56:10,661 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-03-17 14:56:10,661 INFO L403 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-17 14:56:10,662 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-17 14:56:10,662 INFO L85 PathProgramCache]: Analyzing trace with hash 364957256, now seen corresponding path program 1 times [2022-03-17 14:56:10,662 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-17 14:56:10,662 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [745309143] [2022-03-17 14:56:10,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-17 14:56:10,662 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-17 14:56:10,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 14:56:10,726 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-17 14:56:10,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 14:56:10,752 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-03-17 14:56:10,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 14:56:10,760 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-17 14:56:10,760 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-17 14:56:10,760 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [745309143] [2022-03-17 14:56:10,760 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [745309143] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-17 14:56:10,761 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1237881424] [2022-03-17 14:56:10,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-17 14:56:10,761 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-17 14:56:10,761 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-17 14:56:10,762 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) [2022-03-17 14:56:10,763 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-03-17 14:56:10,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 14:56:10,821 INFO L263 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 20 conjunts are in the unsatisfiable core [2022-03-17 14:56:10,827 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-17 14:56:10,954 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-03-17 14:56:11,071 INFO L356 Elim1Store]: treesize reduction 11, result has 21.4 percent of original size [2022-03-17 14:56:11,072 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 37 treesize of output 22 [2022-03-17 14:56:11,232 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-17 14:56:11,232 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-17 14:56:11,365 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 45 treesize of output 41 [2022-03-17 14:56:11,379 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-17 14:56:11,380 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 2 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 41 treesize of output 88 [2022-03-17 14:56:11,482 INFO L356 Elim1Store]: treesize reduction 14, result has 6.7 percent of original size [2022-03-17 14:56:11,483 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 336 treesize of output 315 [2022-03-17 14:56:11,841 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-17 14:56:11,842 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1237881424] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-17 14:56:11,842 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-17 14:56:11,843 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 11, 12] total 20 [2022-03-17 14:56:11,845 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1747664407] [2022-03-17 14:56:11,845 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-17 14:56:11,850 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-03-17 14:56:11,850 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-17 14:56:11,851 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-03-17 14:56:11,853 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=317, Unknown=0, NotChecked=0, Total=380 [2022-03-17 14:56:11,853 INFO L87 Difference]: Start difference. First operand 26 states and 27 transitions. Second operand has 20 states, 17 states have (on average 2.0) internal successors, (34), 15 states have internal predecessors, (34), 6 states have call successors, (8), 5 states have call predecessors, (8), 2 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) [2022-03-17 14:56:12,203 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-17 14:56:12,203 INFO L93 Difference]: Finished difference Result 41 states and 46 transitions. [2022-03-17 14:56:12,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-03-17 14:56:12,205 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 17 states have (on average 2.0) internal successors, (34), 15 states have internal predecessors, (34), 6 states have call successors, (8), 5 states have call predecessors, (8), 2 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) Word has length 21 [2022-03-17 14:56:12,205 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-17 14:56:12,206 INFO L225 Difference]: With dead ends: 41 [2022-03-17 14:56:12,206 INFO L226 Difference]: Without dead ends: 41 [2022-03-17 14:56:12,206 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 29 SyntacticMatches, 2 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 132 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=126, Invalid=630, Unknown=0, NotChecked=0, Total=756 [2022-03-17 14:56:12,207 INFO L912 BasicCegarLoop]: 19 mSDtfsCounter, 36 mSDsluCounter, 60 mSDsCounter, 0 mSdLazyCounter, 340 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 79 SdHoareTripleChecker+Invalid, 370 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 340 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-17 14:56:12,207 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [38 Valid, 79 Invalid, 370 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 340 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-03-17 14:56:12,208 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2022-03-17 14:56:12,214 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 30. [2022-03-17 14:56:12,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 21 states have (on average 1.0952380952380953) internal successors, (23), 21 states have internal predecessors, (23), 5 states have call successors, (5), 4 states have call predecessors, (5), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-03-17 14:56:12,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 32 transitions. [2022-03-17 14:56:12,214 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 32 transitions. Word has length 21 [2022-03-17 14:56:12,215 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-17 14:56:12,215 INFO L478 AbstractCegarLoop]: Abstraction has 30 states and 32 transitions. [2022-03-17 14:56:12,215 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 17 states have (on average 2.0) internal successors, (34), 15 states have internal predecessors, (34), 6 states have call successors, (8), 5 states have call predecessors, (8), 2 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) [2022-03-17 14:56:12,215 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 32 transitions. [2022-03-17 14:56:12,216 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-03-17 14:56:12,216 INFO L492 BasicCegarLoop]: Found error trace [2022-03-17 14:56:12,216 INFO L500 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-17 14:56:12,237 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-03-17 14:56:12,435 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-17 14:56:12,435 INFO L403 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-17 14:56:12,436 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-17 14:56:12,436 INFO L85 PathProgramCache]: Analyzing trace with hash 1998589396, now seen corresponding path program 2 times [2022-03-17 14:56:12,436 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-17 14:56:12,436 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [469765656] [2022-03-17 14:56:12,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-17 14:56:12,436 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-17 14:56:12,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 14:56:12,521 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-17 14:56:12,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 14:56:12,536 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-03-17 14:56:12,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 14:56:12,546 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-03-17 14:56:12,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 14:56:12,559 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-03-17 14:56:12,559 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-17 14:56:12,560 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [469765656] [2022-03-17 14:56:12,560 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [469765656] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-17 14:56:12,561 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1436674834] [2022-03-17 14:56:12,561 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-17 14:56:12,561 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-17 14:56:12,561 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-17 14:56:12,563 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) [2022-03-17 14:56:12,564 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-03-17 14:56:12,601 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-17 14:56:12,601 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-17 14:56:12,615 INFO L263 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 30 conjunts are in the unsatisfiable core [2022-03-17 14:56:12,618 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-17 14:56:12,667 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-03-17 14:56:12,886 INFO L356 Elim1Store]: treesize reduction 25, result has 37.5 percent of original size [2022-03-17 14:56:12,887 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 45 treesize of output 48 [2022-03-17 14:56:13,095 INFO L356 Elim1Store]: treesize reduction 11, result has 21.4 percent of original size [2022-03-17 14:56:13,096 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 37 treesize of output 22 [2022-03-17 14:56:13,255 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-17 14:56:13,255 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-17 14:56:16,850 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1436674834] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-17 14:56:16,851 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-03-17 14:56:16,851 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 16] total 19 [2022-03-17 14:56:16,851 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1161136555] [2022-03-17 14:56:16,851 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-03-17 14:56:16,851 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-03-17 14:56:16,852 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-17 14:56:16,852 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-03-17 14:56:16,852 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=470, Unknown=2, NotChecked=0, Total=552 [2022-03-17 14:56:16,852 INFO L87 Difference]: Start difference. First operand 30 states and 32 transitions. Second operand has 19 states, 17 states have (on average 2.0) internal successors, (34), 14 states have internal predecessors, (34), 6 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (5), 5 states have call predecessors, (5), 4 states have call successors, (5) [2022-03-17 14:56:17,372 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-17 14:56:17,372 INFO L93 Difference]: Finished difference Result 55 states and 60 transitions. [2022-03-17 14:56:17,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-03-17 14:56:17,373 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 17 states have (on average 2.0) internal successors, (34), 14 states have internal predecessors, (34), 6 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (5), 5 states have call predecessors, (5), 4 states have call successors, (5) Word has length 29 [2022-03-17 14:56:17,373 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-17 14:56:17,374 INFO L225 Difference]: With dead ends: 55 [2022-03-17 14:56:17,374 INFO L226 Difference]: Without dead ends: 55 [2022-03-17 14:56:17,375 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 28 SyntacticMatches, 5 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 501 ImplicationChecksByTransitivity, 4.1s TimeCoverageRelationStatistics Valid=296, Invalid=1682, Unknown=2, NotChecked=0, Total=1980 [2022-03-17 14:56:17,376 INFO L912 BasicCegarLoop]: 21 mSDtfsCounter, 56 mSDsluCounter, 53 mSDsCounter, 0 mSdLazyCounter, 216 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 57 SdHoareTripleChecker+Valid, 74 SdHoareTripleChecker+Invalid, 339 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 216 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 82 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-17 14:56:17,376 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [57 Valid, 74 Invalid, 339 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 216 Invalid, 0 Unknown, 82 Unchecked, 0.1s Time] [2022-03-17 14:56:17,377 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2022-03-17 14:56:17,380 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 44. [2022-03-17 14:56:17,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44 states, 31 states have (on average 1.064516129032258) internal successors, (33), 32 states have internal predecessors, (33), 7 states have call successors, (7), 6 states have call predecessors, (7), 5 states have return successors, (6), 5 states have call predecessors, (6), 6 states have call successors, (6) [2022-03-17 14:56:17,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 46 transitions. [2022-03-17 14:56:17,381 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 46 transitions. Word has length 29 [2022-03-17 14:56:17,381 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-17 14:56:17,381 INFO L478 AbstractCegarLoop]: Abstraction has 44 states and 46 transitions. [2022-03-17 14:56:17,381 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 17 states have (on average 2.0) internal successors, (34), 14 states have internal predecessors, (34), 6 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (5), 5 states have call predecessors, (5), 4 states have call successors, (5) [2022-03-17 14:56:17,381 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 46 transitions. [2022-03-17 14:56:17,382 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2022-03-17 14:56:17,382 INFO L492 BasicCegarLoop]: Found error trace [2022-03-17 14:56:17,382 INFO L500 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-17 14:56:17,399 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-03-17 14:56:17,595 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2022-03-17 14:56:17,595 INFO L403 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-17 14:56:17,596 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-17 14:56:17,596 INFO L85 PathProgramCache]: Analyzing trace with hash 483843889, now seen corresponding path program 1 times [2022-03-17 14:56:17,596 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-17 14:56:17,596 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [39985811] [2022-03-17 14:56:17,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-17 14:56:17,596 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-17 14:56:17,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 14:56:17,696 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-17 14:56:17,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 14:56:17,701 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-03-17 14:56:17,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 14:56:17,711 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-03-17 14:56:17,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 14:56:17,721 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-03-17 14:56:17,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 14:56:17,738 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-03-17 14:56:17,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 14:56:17,743 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 2 proven. 15 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-03-17 14:56:17,744 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-17 14:56:17,744 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [39985811] [2022-03-17 14:56:17,744 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [39985811] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-17 14:56:17,744 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1382974728] [2022-03-17 14:56:17,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-17 14:56:17,744 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-17 14:56:17,744 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-17 14:56:17,745 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) [2022-03-17 14:56:17,749 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-03-17 14:56:17,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 14:56:17,798 INFO L263 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 34 conjunts are in the unsatisfiable core [2022-03-17 14:56:17,803 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-17 14:56:17,877 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 58 treesize of output 53 [2022-03-17 14:56:17,884 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 2 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 51 treesize of output 95 [2022-03-17 14:56:17,923 INFO L356 Elim1Store]: treesize reduction 41, result has 2.4 percent of original size [2022-03-17 14:56:17,924 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 100 treesize of output 28 [2022-03-17 14:56:18,743 INFO L356 Elim1Store]: treesize reduction 39, result has 39.1 percent of original size [2022-03-17 14:56:18,744 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 56 treesize of output 57 [2022-03-17 14:56:19,635 INFO L356 Elim1Store]: treesize reduction 17, result has 15.0 percent of original size [2022-03-17 14:56:19,636 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 48 treesize of output 21 [2022-03-17 14:56:19,730 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 11 proven. 17 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-03-17 14:56:19,730 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-17 14:56:24,061 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1382974728] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-17 14:56:24,061 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-03-17 14:56:24,061 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 18] total 21 [2022-03-17 14:56:24,061 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1554340808] [2022-03-17 14:56:24,061 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-03-17 14:56:24,062 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-03-17 14:56:24,062 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-17 14:56:24,062 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-03-17 14:56:24,062 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=101, Invalid=599, Unknown=2, NotChecked=0, Total=702 [2022-03-17 14:56:24,063 INFO L87 Difference]: Start difference. First operand 44 states and 46 transitions. Second operand has 21 states, 19 states have (on average 2.526315789473684) internal successors, (48), 17 states have internal predecessors, (48), 8 states have call successors, (11), 5 states have call predecessors, (11), 4 states have return successors, (8), 8 states have call predecessors, (8), 7 states have call successors, (8) [2022-03-17 14:56:24,448 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-17 14:56:24,448 INFO L93 Difference]: Finished difference Result 66 states and 69 transitions. [2022-03-17 14:56:24,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2022-03-17 14:56:24,449 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 19 states have (on average 2.526315789473684) internal successors, (48), 17 states have internal predecessors, (48), 8 states have call successors, (11), 5 states have call predecessors, (11), 4 states have return successors, (8), 8 states have call predecessors, (8), 7 states have call successors, (8) Word has length 45 [2022-03-17 14:56:24,449 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-17 14:56:24,449 INFO L225 Difference]: With dead ends: 66 [2022-03-17 14:56:24,449 INFO L226 Difference]: Without dead ends: 66 [2022-03-17 14:56:24,450 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 48 SyntacticMatches, 6 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 370 ImplicationChecksByTransitivity, 5.3s TimeCoverageRelationStatistics Valid=205, Invalid=1353, Unknown=2, NotChecked=0, Total=1560 [2022-03-17 14:56:24,451 INFO L912 BasicCegarLoop]: 27 mSDtfsCounter, 42 mSDsluCounter, 123 mSDsCounter, 0 mSdLazyCounter, 169 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 150 SdHoareTripleChecker+Invalid, 296 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 169 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 107 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-17 14:56:24,451 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [44 Valid, 150 Invalid, 296 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 169 Invalid, 0 Unknown, 107 Unchecked, 0.1s Time] [2022-03-17 14:56:24,451 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2022-03-17 14:56:24,454 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 60. [2022-03-17 14:56:24,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60 states, 43 states have (on average 1.0465116279069768) internal successors, (45), 44 states have internal predecessors, (45), 9 states have call successors, (9), 8 states have call predecessors, (9), 7 states have return successors, (8), 7 states have call predecessors, (8), 8 states have call successors, (8) [2022-03-17 14:56:24,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 62 transitions. [2022-03-17 14:56:24,455 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 62 transitions. Word has length 45 [2022-03-17 14:56:24,456 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-17 14:56:24,456 INFO L478 AbstractCegarLoop]: Abstraction has 60 states and 62 transitions. [2022-03-17 14:56:24,456 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 19 states have (on average 2.526315789473684) internal successors, (48), 17 states have internal predecessors, (48), 8 states have call successors, (11), 5 states have call predecessors, (11), 4 states have return successors, (8), 8 states have call predecessors, (8), 7 states have call successors, (8) [2022-03-17 14:56:24,456 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 62 transitions. [2022-03-17 14:56:24,457 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2022-03-17 14:56:24,457 INFO L492 BasicCegarLoop]: Found error trace [2022-03-17 14:56:24,457 INFO L500 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-17 14:56:24,475 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-03-17 14:56:24,667 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-17 14:56:24,668 INFO L403 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-17 14:56:24,668 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-17 14:56:24,668 INFO L85 PathProgramCache]: Analyzing trace with hash -926913650, now seen corresponding path program 2 times [2022-03-17 14:56:24,668 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-17 14:56:24,668 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [400148978] [2022-03-17 14:56:24,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-17 14:56:24,668 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-17 14:56:24,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 14:56:24,756 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-17 14:56:24,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 14:56:24,760 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-03-17 14:56:24,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 14:56:24,766 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-03-17 14:56:24,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 14:56:24,770 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-03-17 14:56:24,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 14:56:24,772 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-03-17 14:56:24,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 14:56:24,775 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-03-17 14:56:24,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 14:56:24,777 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-03-17 14:56:24,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 14:56:24,779 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 4 proven. 28 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2022-03-17 14:56:24,779 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-17 14:56:24,779 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [400148978] [2022-03-17 14:56:24,779 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [400148978] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-17 14:56:24,779 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2049431179] [2022-03-17 14:56:24,779 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-17 14:56:24,780 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-17 14:56:24,780 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-17 14:56:24,781 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) [2022-03-17 14:56:24,788 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-03-17 14:56:24,832 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-17 14:56:24,832 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-17 14:56:24,833 INFO L263 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 38 conjunts are in the unsatisfiable core [2022-03-17 14:56:24,835 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-17 14:56:24,932 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 58 treesize of output 53 [2022-03-17 14:56:24,936 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 2 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 51 treesize of output 95 [2022-03-17 14:56:24,969 INFO L356 Elim1Store]: treesize reduction 41, result has 2.4 percent of original size [2022-03-17 14:56:24,970 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 100 treesize of output 28 [2022-03-17 14:56:30,258 INFO L356 Elim1Store]: treesize reduction 113, result has 28.9 percent of original size [2022-03-17 14:56:30,258 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 93 treesize of output 94 [2022-03-17 14:56:37,496 INFO L356 Elim1Store]: treesize reduction 17, result has 15.0 percent of original size [2022-03-17 14:56:37,496 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 48 treesize of output 21 [2022-03-17 14:56:37,591 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 18 proven. 38 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-03-17 14:56:37,591 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-17 14:56:42,183 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2049431179] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-17 14:56:42,184 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-03-17 14:56:42,184 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 20] total 23 [2022-03-17 14:56:42,184 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1988543748] [2022-03-17 14:56:42,184 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-03-17 14:56:42,184 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-03-17 14:56:42,185 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-17 14:56:42,185 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-03-17 14:56:42,185 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=114, Invalid=748, Unknown=8, NotChecked=0, Total=870 [2022-03-17 14:56:42,185 INFO L87 Difference]: Start difference. First operand 60 states and 62 transitions. Second operand has 23 states, 21 states have (on average 2.5714285714285716) internal successors, (54), 19 states have internal predecessors, (54), 10 states have call successors, (13), 5 states have call predecessors, (13), 4 states have return successors, (10), 10 states have call predecessors, (10), 9 states have call successors, (10) [2022-03-17 14:56:47,059 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-17 14:56:47,059 INFO L93 Difference]: Finished difference Result 86 states and 90 transitions. [2022-03-17 14:56:47,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-03-17 14:56:47,060 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 21 states have (on average 2.5714285714285716) internal successors, (54), 19 states have internal predecessors, (54), 10 states have call successors, (13), 5 states have call predecessors, (13), 4 states have return successors, (10), 10 states have call predecessors, (10), 9 states have call successors, (10) Word has length 61 [2022-03-17 14:56:47,060 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-17 14:56:47,061 INFO L225 Difference]: With dead ends: 86 [2022-03-17 14:56:47,061 INFO L226 Difference]: Without dead ends: 86 [2022-03-17 14:56:47,061 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 123 GetRequests, 72 SyntacticMatches, 8 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 476 ImplicationChecksByTransitivity, 14.6s TimeCoverageRelationStatistics Valid=237, Invalid=1734, Unknown=9, NotChecked=0, Total=1980 [2022-03-17 14:56:47,062 INFO L912 BasicCegarLoop]: 30 mSDtfsCounter, 56 mSDsluCounter, 160 mSDsCounter, 0 mSdLazyCounter, 303 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 190 SdHoareTripleChecker+Invalid, 472 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 303 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 138 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-17 14:56:47,062 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [58 Valid, 190 Invalid, 472 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 303 Invalid, 0 Unknown, 138 Unchecked, 0.2s Time] [2022-03-17 14:56:47,063 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2022-03-17 14:56:47,066 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 76. [2022-03-17 14:56:47,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76 states, 55 states have (on average 1.0363636363636364) internal successors, (57), 56 states have internal predecessors, (57), 11 states have call successors, (11), 10 states have call predecessors, (11), 9 states have return successors, (10), 9 states have call predecessors, (10), 10 states have call successors, (10) [2022-03-17 14:56:47,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 78 transitions. [2022-03-17 14:56:47,067 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 78 transitions. Word has length 61 [2022-03-17 14:56:47,067 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-17 14:56:47,067 INFO L478 AbstractCegarLoop]: Abstraction has 76 states and 78 transitions. [2022-03-17 14:56:47,067 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 21 states have (on average 2.5714285714285716) internal successors, (54), 19 states have internal predecessors, (54), 10 states have call successors, (13), 5 states have call predecessors, (13), 4 states have return successors, (10), 10 states have call predecessors, (10), 9 states have call successors, (10) [2022-03-17 14:56:47,067 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 78 transitions. [2022-03-17 14:56:47,068 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-03-17 14:56:47,068 INFO L492 BasicCegarLoop]: Found error trace [2022-03-17 14:56:47,068 INFO L500 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-17 14:56:47,085 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-03-17 14:56:47,271 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-17 14:56:47,271 INFO L403 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-17 14:56:47,272 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-17 14:56:47,272 INFO L85 PathProgramCache]: Analyzing trace with hash -635325717, now seen corresponding path program 3 times [2022-03-17 14:56:47,272 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-17 14:56:47,272 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1912678100] [2022-03-17 14:56:47,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-17 14:56:47,272 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-17 14:56:47,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 14:56:47,374 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-17 14:56:47,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 14:56:47,377 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-03-17 14:56:47,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 14:56:47,383 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-03-17 14:56:47,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 14:56:47,389 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-03-17 14:56:47,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 14:56:47,393 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-03-17 14:56:47,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 14:56:47,401 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-03-17 14:56:47,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 14:56:47,405 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-03-17 14:56:47,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 14:56:47,407 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-03-17 14:56:47,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 14:56:47,411 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-03-17 14:56:47,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 14:56:47,414 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 6 proven. 45 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2022-03-17 14:56:47,414 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-17 14:56:47,414 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1912678100] [2022-03-17 14:56:47,414 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1912678100] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-17 14:56:47,414 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1326683487] [2022-03-17 14:56:47,414 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-17 14:56:47,414 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-17 14:56:47,414 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-17 14:56:47,415 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) [2022-03-17 14:56:47,431 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-03-17 14:56:47,868 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2022-03-17 14:56:47,868 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-17 14:56:47,871 INFO L263 TraceCheckSpWp]: Trace formula consists of 203 conjuncts, 55 conjunts are in the unsatisfiable core [2022-03-17 14:56:47,879 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-17 14:56:48,053 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 58 treesize of output 53 [2022-03-17 14:56:48,057 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-17 14:56:48,057 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 2 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 51 treesize of output 95 [2022-03-17 14:56:48,295 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 104 treesize of output 95 [2022-03-17 14:56:48,299 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-17 14:56:48,300 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-17 14:56:48,300 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-17 14:56:48,301 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 2 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 94 treesize of output 143 [2022-03-17 14:56:48,452 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 25 proven. 45 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2022-03-17 14:56:48,452 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-17 14:56:51,181 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 45 treesize of output 41 [2022-03-17 14:56:51,184 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-17 14:56:51,195 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-17 14:56:51,195 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 2 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 41 treesize of output 88 [2022-03-17 14:56:51,206 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-17 14:56:51,209 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 54 treesize of output 4 [2022-03-17 14:56:51,237 INFO L356 Elim1Store]: treesize reduction 15, result has 6.3 percent of original size [2022-03-17 14:56:51,238 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 22 treesize of output 10 [2022-03-17 14:56:51,555 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 6 proven. 63 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2022-03-17 14:56:51,555 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1326683487] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-17 14:56:51,555 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-17 14:56:51,555 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 17, 21] total 43 [2022-03-17 14:56:51,555 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [174392951] [2022-03-17 14:56:51,555 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-17 14:56:51,556 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2022-03-17 14:56:51,556 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-17 14:56:51,556 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2022-03-17 14:56:51,557 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=264, Invalid=1542, Unknown=0, NotChecked=0, Total=1806 [2022-03-17 14:56:51,557 INFO L87 Difference]: Start difference. First operand 76 states and 78 transitions. Second operand has 43 states, 42 states have (on average 2.0952380952380953) internal successors, (88), 38 states have internal predecessors, (88), 21 states have call successors, (24), 5 states have call predecessors, (24), 4 states have return successors, (21), 20 states have call predecessors, (21), 20 states have call successors, (21) [2022-03-17 14:56:57,396 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-17 14:56:57,396 INFO L93 Difference]: Finished difference Result 188 states and 218 transitions. [2022-03-17 14:56:57,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2022-03-17 14:56:57,397 INFO L78 Accepts]: Start accepts. Automaton has has 43 states, 42 states have (on average 2.0952380952380953) internal successors, (88), 38 states have internal predecessors, (88), 21 states have call successors, (24), 5 states have call predecessors, (24), 4 states have return successors, (21), 20 states have call predecessors, (21), 20 states have call successors, (21) Word has length 77 [2022-03-17 14:56:57,397 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-17 14:56:57,398 INFO L225 Difference]: With dead ends: 188 [2022-03-17 14:56:57,398 INFO L226 Difference]: Without dead ends: 188 [2022-03-17 14:56:57,400 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 226 GetRequests, 137 SyntacticMatches, 2 SemanticMatches, 87 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2204 ImplicationChecksByTransitivity, 6.9s TimeCoverageRelationStatistics Valid=1295, Invalid=6537, Unknown=0, NotChecked=0, Total=7832 [2022-03-17 14:56:57,401 INFO L912 BasicCegarLoop]: 32 mSDtfsCounter, 342 mSDsluCounter, 99 mSDsCounter, 0 mSdLazyCounter, 1603 mSolverCounterSat, 426 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 342 SdHoareTripleChecker+Valid, 131 SdHoareTripleChecker+Invalid, 2459 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 426 IncrementalHoareTripleChecker+Valid, 1603 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 430 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-03-17 14:56:57,401 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [342 Valid, 131 Invalid, 2459 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [426 Valid, 1603 Invalid, 0 Unknown, 430 Unchecked, 1.8s Time] [2022-03-17 14:56:57,401 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 188 states. [2022-03-17 14:56:57,410 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 188 to 123. [2022-03-17 14:56:57,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 123 states, 90 states have (on average 1.0777777777777777) internal successors, (97), 92 states have internal predecessors, (97), 21 states have call successors, (21), 12 states have call predecessors, (21), 11 states have return successors, (20), 18 states have call predecessors, (20), 20 states have call successors, (20) [2022-03-17 14:56:57,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 138 transitions. [2022-03-17 14:56:57,412 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 138 transitions. Word has length 77 [2022-03-17 14:56:57,412 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-17 14:56:57,412 INFO L478 AbstractCegarLoop]: Abstraction has 123 states and 138 transitions. [2022-03-17 14:56:57,412 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 43 states, 42 states have (on average 2.0952380952380953) internal successors, (88), 38 states have internal predecessors, (88), 21 states have call successors, (24), 5 states have call predecessors, (24), 4 states have return successors, (21), 20 states have call predecessors, (21), 20 states have call successors, (21) [2022-03-17 14:56:57,412 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 138 transitions. [2022-03-17 14:56:57,413 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2022-03-17 14:56:57,413 INFO L492 BasicCegarLoop]: Found error trace [2022-03-17 14:56:57,413 INFO L500 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-17 14:56:57,418 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-03-17 14:56:57,615 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-17 14:56:57,616 INFO L403 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-17 14:56:57,616 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-17 14:56:57,616 INFO L85 PathProgramCache]: Analyzing trace with hash 994030920, now seen corresponding path program 4 times [2022-03-17 14:56:57,616 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-17 14:56:57,616 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [483629491] [2022-03-17 14:56:57,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-17 14:56:57,616 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-17 14:56:57,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 14:56:57,716 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-17 14:56:57,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 14:56:57,718 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-03-17 14:56:57,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 14:56:57,721 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-03-17 14:56:57,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 14:56:57,724 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-03-17 14:56:57,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 14:56:57,727 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-03-17 14:56:57,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 14:56:57,730 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-03-17 14:56:57,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 14:56:57,732 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-03-17 14:56:57,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 14:56:57,734 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-03-17 14:56:57,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 14:56:57,736 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-03-17 14:56:57,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 14:56:57,738 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-03-17 14:56:57,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 14:56:57,740 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-03-17 14:56:57,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 14:56:57,746 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 8 proven. 66 refuted. 0 times theorem prover too weak. 116 trivial. 0 not checked. [2022-03-17 14:56:57,746 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-17 14:56:57,746 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [483629491] [2022-03-17 14:56:57,746 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [483629491] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-17 14:56:57,746 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1726965807] [2022-03-17 14:56:57,747 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-17 14:56:57,747 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-17 14:56:57,747 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-17 14:56:57,752 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) [2022-03-17 14:56:57,753 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-03-17 14:56:58,325 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-17 14:56:58,325 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-17 14:56:58,327 INFO L263 TraceCheckSpWp]: Trace formula consists of 236 conjuncts, 15 conjunts are in the unsatisfiable core [2022-03-17 14:56:58,328 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-17 14:56:58,501 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 0 proven. 66 refuted. 0 times theorem prover too weak. 124 trivial. 0 not checked. [2022-03-17 14:56:58,502 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-17 14:56:58,716 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 8 proven. 66 refuted. 0 times theorem prover too weak. 116 trivial. 0 not checked. [2022-03-17 14:56:58,716 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1726965807] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-17 14:56:58,716 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-17 14:56:58,716 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9, 9] total 18 [2022-03-17 14:56:58,716 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [765329616] [2022-03-17 14:56:58,716 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-17 14:56:58,717 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-03-17 14:56:58,717 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-17 14:56:58,717 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-03-17 14:56:58,718 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=96, Invalid=210, Unknown=0, NotChecked=0, Total=306 [2022-03-17 14:56:58,718 INFO L87 Difference]: Start difference. First operand 123 states and 138 transitions. Second operand has 18 states, 18 states have (on average 3.3333333333333335) internal successors, (60), 17 states have internal predecessors, (60), 14 states have call successors, (17), 3 states have call predecessors, (17), 2 states have return successors, (15), 14 states have call predecessors, (15), 14 states have call successors, (15) [2022-03-17 14:56:59,893 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-17 14:56:59,893 INFO L93 Difference]: Finished difference Result 159 states and 179 transitions. [2022-03-17 14:56:59,893 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-03-17 14:56:59,893 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 3.3333333333333335) internal successors, (60), 17 states have internal predecessors, (60), 14 states have call successors, (17), 3 states have call predecessors, (17), 2 states have return successors, (15), 14 states have call predecessors, (15), 14 states have call successors, (15) Word has length 93 [2022-03-17 14:56:59,894 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-17 14:56:59,894 INFO L225 Difference]: With dead ends: 159 [2022-03-17 14:56:59,894 INFO L226 Difference]: Without dead ends: 159 [2022-03-17 14:56:59,895 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 230 GetRequests, 199 SyntacticMatches, 1 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 116 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=299, Invalid=693, Unknown=0, NotChecked=0, Total=992 [2022-03-17 14:56:59,895 INFO L912 BasicCegarLoop]: 37 mSDtfsCounter, 237 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 699 mSolverCounterSat, 254 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 237 SdHoareTripleChecker+Valid, 74 SdHoareTripleChecker+Invalid, 953 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 254 IncrementalHoareTripleChecker+Valid, 699 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-03-17 14:56:59,895 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [237 Valid, 74 Invalid, 953 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [254 Valid, 699 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-03-17 14:56:59,896 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159 states. [2022-03-17 14:56:59,902 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 116. [2022-03-17 14:56:59,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 116 states, 85 states have (on average 1.0235294117647058) internal successors, (87), 86 states have internal predecessors, (87), 20 states have call successors, (20), 11 states have call predecessors, (20), 10 states have return successors, (19), 18 states have call predecessors, (19), 19 states have call successors, (19) [2022-03-17 14:56:59,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 126 transitions. [2022-03-17 14:56:59,903 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 126 transitions. Word has length 93 [2022-03-17 14:56:59,904 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-17 14:56:59,904 INFO L478 AbstractCegarLoop]: Abstraction has 116 states and 126 transitions. [2022-03-17 14:56:59,904 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 3.3333333333333335) internal successors, (60), 17 states have internal predecessors, (60), 14 states have call successors, (17), 3 states have call predecessors, (17), 2 states have return successors, (15), 14 states have call predecessors, (15), 14 states have call successors, (15) [2022-03-17 14:56:59,904 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 126 transitions. [2022-03-17 14:56:59,907 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2022-03-17 14:56:59,908 INFO L492 BasicCegarLoop]: Found error trace [2022-03-17 14:56:59,908 INFO L500 BasicCegarLoop]: trace histogram [14, 14, 14, 14, 14, 14, 14, 14, 4, 4, 4, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-17 14:56:59,925 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-03-17 14:57:00,111 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-17 14:57:00,112 INFO L403 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-17 14:57:00,112 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-17 14:57:00,112 INFO L85 PathProgramCache]: Analyzing trace with hash 1349749463, now seen corresponding path program 5 times [2022-03-17 14:57:00,112 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-17 14:57:00,113 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1445394714] [2022-03-17 14:57:00,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-17 14:57:00,113 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-17 14:57:00,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 14:57:00,364 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-17 14:57:00,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 14:57:00,368 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-03-17 14:57:00,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 14:57:00,376 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-03-17 14:57:00,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 14:57:00,380 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-03-17 14:57:00,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 14:57:00,396 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-03-17 14:57:00,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 14:57:00,400 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-03-17 14:57:00,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 14:57:00,403 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-03-17 14:57:00,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 14:57:00,405 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-03-17 14:57:00,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 14:57:00,410 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-03-17 14:57:00,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 14:57:00,413 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-03-17 14:57:00,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 14:57:00,419 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-03-17 14:57:00,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 14:57:00,422 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-03-17 14:57:00,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 14:57:00,426 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-03-17 14:57:00,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 14:57:00,432 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-03-17 14:57:00,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 14:57:00,436 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-03-17 14:57:00,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 14:57:00,440 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2022-03-17 14:57:00,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 14:57:00,443 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2022-03-17 14:57:00,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 14:57:00,445 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2022-03-17 14:57:00,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 14:57:00,447 INFO L134 CoverageAnalysis]: Checked inductivity of 778 backedges. 6 proven. 378 refuted. 0 times theorem prover too weak. 394 trivial. 0 not checked. [2022-03-17 14:57:00,447 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-17 14:57:00,447 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1445394714] [2022-03-17 14:57:00,447 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1445394714] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-17 14:57:00,447 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [95751766] [2022-03-17 14:57:00,447 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-03-17 14:57:00,447 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-17 14:57:00,448 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-17 14:57:00,448 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) [2022-03-17 14:57:00,449 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-03-17 14:57:42,896 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 15 check-sat command(s) [2022-03-17 14:57:42,896 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-17 14:57:42,942 INFO L263 TraceCheckSpWp]: Trace formula consists of 365 conjuncts, 31 conjunts are in the unsatisfiable core [2022-03-17 14:57:42,945 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-17 14:57:43,252 INFO L134 CoverageAnalysis]: Checked inductivity of 778 backedges. 0 proven. 378 refuted. 0 times theorem prover too weak. 400 trivial. 0 not checked. [2022-03-17 14:57:43,252 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-17 14:57:43,809 INFO L134 CoverageAnalysis]: Checked inductivity of 778 backedges. 6 proven. 378 refuted. 0 times theorem prover too weak. 394 trivial. 0 not checked. [2022-03-17 14:57:43,809 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [95751766] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-17 14:57:43,809 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-17 14:57:43,810 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 17, 17] total 34 [2022-03-17 14:57:43,810 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1365289978] [2022-03-17 14:57:43,810 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-17 14:57:43,810 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-03-17 14:57:43,810 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-17 14:57:43,811 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-03-17 14:57:43,811 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=320, Invalid=802, Unknown=0, NotChecked=0, Total=1122 [2022-03-17 14:57:43,811 INFO L87 Difference]: Start difference. First operand 116 states and 126 transitions. Second operand has 34 states, 34 states have (on average 3.176470588235294) internal successors, (108), 33 states have internal predecessors, (108), 30 states have call successors, (33), 3 states have call predecessors, (33), 2 states have return successors, (31), 30 states have call predecessors, (31), 30 states have call successors, (31) [2022-03-17 14:58:00,669 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-17 14:58:00,669 INFO L93 Difference]: Finished difference Result 287 states and 339 transitions. [2022-03-17 14:58:00,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2022-03-17 14:58:00,670 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 3.176470588235294) internal successors, (108), 33 states have internal predecessors, (108), 30 states have call successors, (33), 3 states have call predecessors, (33), 2 states have return successors, (31), 30 states have call predecessors, (31), 30 states have call successors, (31) Word has length 149 [2022-03-17 14:58:00,671 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-17 14:58:00,672 INFO L225 Difference]: With dead ends: 287 [2022-03-17 14:58:00,672 INFO L226 Difference]: Without dead ends: 287 [2022-03-17 14:58:00,673 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 380 GetRequests, 317 SyntacticMatches, 1 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 484 ImplicationChecksByTransitivity, 15.0s TimeCoverageRelationStatistics Valid=1115, Invalid=2917, Unknown=0, NotChecked=0, Total=4032 [2022-03-17 14:58:00,673 INFO L912 BasicCegarLoop]: 61 mSDtfsCounter, 729 mSDsluCounter, 82 mSDsCounter, 0 mSdLazyCounter, 2854 mSolverCounterSat, 775 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 729 SdHoareTripleChecker+Valid, 143 SdHoareTripleChecker+Invalid, 3629 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 775 IncrementalHoareTripleChecker+Valid, 2854 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-03-17 14:58:00,674 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [729 Valid, 143 Invalid, 3629 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [775 Valid, 2854 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2022-03-17 14:58:00,674 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 287 states. [2022-03-17 14:58:00,685 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 287 to 180. [2022-03-17 14:58:00,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 180 states, 133 states have (on average 1.0150375939849625) internal successors, (135), 134 states have internal predecessors, (135), 36 states have call successors, (36), 11 states have call predecessors, (36), 10 states have return successors, (35), 34 states have call predecessors, (35), 35 states have call successors, (35) [2022-03-17 14:58:00,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 180 states to 180 states and 206 transitions. [2022-03-17 14:58:00,687 INFO L78 Accepts]: Start accepts. Automaton has 180 states and 206 transitions. Word has length 149 [2022-03-17 14:58:00,687 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-17 14:58:00,687 INFO L478 AbstractCegarLoop]: Abstraction has 180 states and 206 transitions. [2022-03-17 14:58:00,687 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 3.176470588235294) internal successors, (108), 33 states have internal predecessors, (108), 30 states have call successors, (33), 3 states have call predecessors, (33), 2 states have return successors, (31), 30 states have call predecessors, (31), 30 states have call successors, (31) [2022-03-17 14:58:00,688 INFO L276 IsEmpty]: Start isEmpty. Operand 180 states and 206 transitions. [2022-03-17 14:58:00,690 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 278 [2022-03-17 14:58:00,690 INFO L492 BasicCegarLoop]: Found error trace [2022-03-17 14:58:00,690 INFO L500 BasicCegarLoop]: trace histogram [30, 30, 30, 30, 30, 30, 30, 30, 4, 4, 4, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-17 14:58:00,702 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2022-03-17 14:58:00,899 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-17 14:58:00,899 INFO L403 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-17 14:58:00,900 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-17 14:58:00,900 INFO L85 PathProgramCache]: Analyzing trace with hash -1018698857, now seen corresponding path program 6 times [2022-03-17 14:58:00,900 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-17 14:58:00,900 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1729993921] [2022-03-17 14:58:00,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-17 14:58:00,900 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-17 14:58:00,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 14:58:01,524 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-17 14:58:01,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 14:58:01,533 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-03-17 14:58:01,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 14:58:01,536 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-03-17 14:58:01,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 14:58:01,539 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-03-17 14:58:01,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 14:58:01,542 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-03-17 14:58:01,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 14:58:01,544 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-03-17 14:58:01,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 14:58:01,547 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-03-17 14:58:01,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 14:58:01,550 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-03-17 14:58:01,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 14:58:01,553 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-03-17 14:58:01,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 14:58:01,556 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-03-17 14:58:01,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 14:58:01,558 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-03-17 14:58:01,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 14:58:01,561 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-03-17 14:58:01,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 14:58:01,564 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-03-17 14:58:01,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 14:58:01,567 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-03-17 14:58:01,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 14:58:01,569 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-03-17 14:58:01,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 14:58:01,572 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2022-03-17 14:58:01,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 14:58:01,575 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2022-03-17 14:58:01,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 14:58:01,578 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2022-03-17 14:58:01,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 14:58:01,582 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2022-03-17 14:58:01,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 14:58:01,584 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2022-03-17 14:58:01,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 14:58:01,589 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2022-03-17 14:58:01,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 14:58:01,593 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2022-03-17 14:58:01,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 14:58:01,596 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2022-03-17 14:58:01,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 14:58:01,598 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2022-03-17 14:58:01,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 14:58:01,601 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2022-03-17 14:58:01,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 14:58:01,604 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2022-03-17 14:58:01,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 14:58:01,607 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 207 [2022-03-17 14:58:01,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 14:58:01,611 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2022-03-17 14:58:01,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 14:58:01,614 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2022-03-17 14:58:01,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 14:58:01,617 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 231 [2022-03-17 14:58:01,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 14:58:01,620 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2022-03-17 14:58:01,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 14:58:01,624 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 249 [2022-03-17 14:58:01,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 14:58:01,626 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 257 [2022-03-17 14:58:01,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 14:58:01,628 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 265 [2022-03-17 14:58:01,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 14:58:01,631 INFO L134 CoverageAnalysis]: Checked inductivity of 3546 backedges. 6 proven. 1770 refuted. 0 times theorem prover too weak. 1770 trivial. 0 not checked. [2022-03-17 14:58:01,631 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-17 14:58:01,631 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1729993921] [2022-03-17 14:58:01,632 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1729993921] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-17 14:58:01,632 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [924140847] [2022-03-17 14:58:01,632 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-17 14:58:01,632 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-17 14:58:01,632 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-17 14:58:01,633 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) [2022-03-17 14:58:01,635 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process