/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/nla-digbench-scaling/dijkstra-u_valuebound1.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-d966a43 [2022-01-31 13:45:11,021 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-31 13:45:11,022 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-31 13:45:11,060 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-31 13:45:11,060 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-31 13:45:11,061 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-31 13:45:11,062 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-31 13:45:11,064 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-31 13:45:11,065 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-31 13:45:11,066 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-31 13:45:11,067 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-31 13:45:11,068 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-31 13:45:11,068 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-31 13:45:11,069 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-31 13:45:11,070 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-31 13:45:11,071 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-31 13:45:11,072 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-31 13:45:11,073 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-31 13:45:11,081 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-31 13:45:11,083 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-31 13:45:11,084 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-31 13:45:11,085 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-31 13:45:11,086 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-31 13:45:11,087 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-31 13:45:11,089 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-01-31 13:45:11,096 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-31 13:45:11,097 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-31 13:45:11,097 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-31 13:45:11,102 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/LoopAccelerationJordanC.epf [2022-01-31 13:45:11,110 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-31 13:45:11,110 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-31 13:45:11,111 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-31 13:45:11,112 INFO L138 SettingsManager]: * sizeof long=4 [2022-01-31 13:45:11,112 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-31 13:45:11,112 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-01-31 13:45:11,112 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-31 13:45:11,112 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-31 13:45:11,112 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-31 13:45:11,112 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-31 13:45:11,113 INFO L138 SettingsManager]: * sizeof long double=12 [2022-01-31 13:45:11,113 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-31 13:45:11,113 INFO L138 SettingsManager]: * Use constant arrays=true [2022-01-31 13:45:11,113 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-31 13:45:11,113 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-31 13:45:11,113 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-31 13:45:11,113 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-01-31 13:45:11,114 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-31 13:45:11,114 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-31 13:45:11,114 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-31 13:45:11,114 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-31 13:45:11,115 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-01-31 13:45:11,115 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-31 13:45:11,333 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-31 13:45:11,360 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-31 13:45:11,362 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-31 13:45:11,363 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-31 13:45:11,365 INFO L275 PluginConnector]: CDTParser initialized [2022-01-31 13:45:11,366 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/nla-digbench-scaling/dijkstra-u_valuebound1.c [2022-01-31 13:45:11,417 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/de2fcc077/b2af052855c74779b07ead41d876c88f/FLAG2781fede1 [2022-01-31 13:45:11,956 INFO L306 CDTParser]: Found 1 translation units. [2022-01-31 13:45:11,957 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench-scaling/dijkstra-u_valuebound1.c [2022-01-31 13:45:11,971 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/de2fcc077/b2af052855c74779b07ead41d876c88f/FLAG2781fede1 [2022-01-31 13:45:12,354 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/de2fcc077/b2af052855c74779b07ead41d876c88f [2022-01-31 13:45:12,356 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-31 13:45:12,357 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-01-31 13:45:12,360 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-31 13:45:12,361 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-31 13:45:12,363 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-31 13:45:12,364 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.01 01:45:12" (1/1) ... [2022-01-31 13:45:12,365 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4a731310 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 01:45:12, skipping insertion in model container [2022-01-31 13:45:12,366 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.01 01:45:12" (1/1) ... [2022-01-31 13:45:12,372 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-31 13:45:12,391 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-31 13:45:12,583 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench-scaling/dijkstra-u_valuebound1.c[525,538] [2022-01-31 13:45:12,629 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-31 13:45:12,636 INFO L203 MainTranslator]: Completed pre-run [2022-01-31 13:45:12,648 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench-scaling/dijkstra-u_valuebound1.c[525,538] [2022-01-31 13:45:12,670 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-31 13:45:12,687 INFO L208 MainTranslator]: Completed translation [2022-01-31 13:45:12,687 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 01:45:12 WrapperNode [2022-01-31 13:45:12,688 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-31 13:45:12,690 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-31 13:45:12,690 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-31 13:45:12,690 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-31 13:45:12,699 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 01:45:12" (1/1) ... [2022-01-31 13:45:12,700 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 01:45:12" (1/1) ... [2022-01-31 13:45:12,715 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 01:45:12" (1/1) ... [2022-01-31 13:45:12,715 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 01:45:12" (1/1) ... [2022-01-31 13:45:12,723 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 01:45:12" (1/1) ... [2022-01-31 13:45:12,726 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 01:45:12" (1/1) ... [2022-01-31 13:45:12,732 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 01:45:12" (1/1) ... [2022-01-31 13:45:12,734 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-31 13:45:12,734 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-31 13:45:12,735 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-31 13:45:12,735 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-31 13:45:12,742 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 01:45:12" (1/1) ... [2022-01-31 13:45:12,748 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-31 13:45:12,764 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-31 13:45:12,777 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-01-31 13:45:12,802 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-01-31 13:45:12,816 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2022-01-31 13:45:12,816 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-31 13:45:12,816 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2022-01-31 13:45:12,816 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-01-31 13:45:12,817 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-01-31 13:45:12,817 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2022-01-31 13:45:12,817 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2022-01-31 13:45:12,817 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2022-01-31 13:45:12,818 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2022-01-31 13:45:12,818 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-31 13:45:12,818 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uint [2022-01-31 13:45:12,818 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-01-31 13:45:12,818 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-01-31 13:45:12,819 INFO L130 BoogieDeclarations]: Found specification of procedure main [2022-01-31 13:45:12,819 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2022-01-31 13:45:12,820 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-01-31 13:45:12,821 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-31 13:45:12,821 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-01-31 13:45:12,821 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-01-31 13:45:12,821 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-01-31 13:45:12,879 INFO L234 CfgBuilder]: Building ICFG [2022-01-31 13:45:12,882 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-31 13:45:13,083 INFO L275 CfgBuilder]: Performing block encoding [2022-01-31 13:45:13,088 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-31 13:45:13,089 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2022-01-31 13:45:13,090 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.01 01:45:13 BoogieIcfgContainer [2022-01-31 13:45:13,090 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-31 13:45:13,091 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-01-31 13:45:13,091 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-01-31 13:45:13,092 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-01-31 13:45:13,098 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.01 01:45:13" (1/1) ... [2022-01-31 13:45:13,116 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 31.01 01:45:13 BasicIcfg [2022-01-31 13:45:13,116 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-01-31 13:45:13,118 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-31 13:45:13,118 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-31 13:45:13,120 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-31 13:45:13,121 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.01 01:45:12" (1/4) ... [2022-01-31 13:45:13,121 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@339618a4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.01 01:45:13, skipping insertion in model container [2022-01-31 13:45:13,121 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 01:45:12" (2/4) ... [2022-01-31 13:45:13,122 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@339618a4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.01 01:45:13, skipping insertion in model container [2022-01-31 13:45:13,122 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.01 01:45:13" (3/4) ... [2022-01-31 13:45:13,122 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@339618a4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 31.01 01:45:13, skipping insertion in model container [2022-01-31 13:45:13,122 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 31.01 01:45:13" (4/4) ... [2022-01-31 13:45:13,123 INFO L111 eAbstractionObserver]: Analyzing ICFG dijkstra-u_valuebound1.cJordan [2022-01-31 13:45:13,127 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:ForwardPredicates Determinization: PREDICATE_ABSTRACTION [2022-01-31 13:45:13,127 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-31 13:45:13,183 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-31 13:45:13,193 INFO L339 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, mLoopAccelerationTechnique=FAST_UPR [2022-01-31 13:45:13,193 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-01-31 13:45:13,208 INFO L276 IsEmpty]: Start isEmpty. Operand has 38 states, 19 states have (on average 1.5263157894736843) internal successors, (29), 20 states have internal predecessors, (29), 13 states have call successors, (13), 4 states have call predecessors, (13), 4 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2022-01-31 13:45:13,222 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-01-31 13:45:13,223 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 13:45:13,225 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 13:45:13,225 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 13:45:13,232 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 13:45:13,232 INFO L85 PathProgramCache]: Analyzing trace with hash 890522097, now seen corresponding path program 1 times [2022-01-31 13:45:13,243 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-31 13:45:13,243 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [557452272] [2022-01-31 13:45:13,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 13:45:13,244 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 13:45:13,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 13:45:13,486 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 13:45:13,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 13:45:13,499 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-01-31 13:45:13,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 13:45:13,513 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-01-31 13:45:13,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 13:45:13,524 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-01-31 13:45:13,525 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-31 13:45:13,525 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [557452272] [2022-01-31 13:45:13,525 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [557452272] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 13:45:13,526 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 13:45:13,526 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-31 13:45:13,527 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1999621477] [2022-01-31 13:45:13,528 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 13:45:13,531 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-31 13:45:13,531 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-31 13:45:13,557 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-31 13:45:13,558 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-31 13:45:13,560 INFO L87 Difference]: Start difference. First operand has 38 states, 19 states have (on average 1.5263157894736843) internal successors, (29), 20 states have internal predecessors, (29), 13 states have call successors, (13), 4 states have call predecessors, (13), 4 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) Second operand has 3 states, 3 states have (on average 4.0) internal successors, (12), 2 states have internal predecessors, (12), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-01-31 13:45:15,618 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-31 13:45:15,759 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 13:45:15,759 INFO L93 Difference]: Finished difference Result 38 states and 49 transitions. [2022-01-31 13:45:15,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-31 13:45:15,762 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 2 states have internal predecessors, (12), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 23 [2022-01-31 13:45:15,762 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 13:45:15,767 INFO L225 Difference]: With dead ends: 38 [2022-01-31 13:45:15,767 INFO L226 Difference]: Without dead ends: 33 [2022-01-31 13:45:15,768 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-31 13:45:15,771 INFO L933 BasicCegarLoop]: 39 mSDtfsCounter, 20 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 13 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 42 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-01-31 13:45:15,776 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [29 Valid, 42 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 11 Invalid, 1 Unknown, 0 Unchecked, 2.2s Time] [2022-01-31 13:45:15,789 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2022-01-31 13:45:15,800 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2022-01-31 13:45:15,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 16 states have (on average 1.25) internal successors, (20), 17 states have internal predecessors, (20), 13 states have call successors, (13), 4 states have call predecessors, (13), 3 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2022-01-31 13:45:15,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 44 transitions. [2022-01-31 13:45:15,803 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 44 transitions. Word has length 23 [2022-01-31 13:45:15,804 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 13:45:15,804 INFO L470 AbstractCegarLoop]: Abstraction has 33 states and 44 transitions. [2022-01-31 13:45:15,804 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 2 states have internal predecessors, (12), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-01-31 13:45:15,804 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 44 transitions. [2022-01-31 13:45:15,805 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-01-31 13:45:15,805 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 13:45:15,805 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 13:45:15,805 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-31 13:45:15,805 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 13:45:15,806 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 13:45:15,806 INFO L85 PathProgramCache]: Analyzing trace with hash 1386957495, now seen corresponding path program 1 times [2022-01-31 13:45:15,806 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-31 13:45:15,806 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [356663329] [2022-01-31 13:45:15,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 13:45:15,807 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 13:45:15,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 13:45:16,047 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 13:45:16,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 13:45:16,054 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-01-31 13:45:16,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 13:45:16,058 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-01-31 13:45:16,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 13:45:16,063 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-01-31 13:45:16,063 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-31 13:45:16,063 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [356663329] [2022-01-31 13:45:16,063 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [356663329] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 13:45:16,064 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 13:45:16,064 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-31 13:45:16,064 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1812140996] [2022-01-31 13:45:16,064 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 13:45:16,065 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-31 13:45:16,065 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-31 13:45:16,066 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-31 13:45:16,066 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-01-31 13:45:16,066 INFO L87 Difference]: Start difference. First operand 33 states and 44 transitions. Second operand has 7 states, 7 states have (on average 1.8571428571428572) internal successors, (13), 5 states have internal predecessors, (13), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-01-31 13:45:21,089 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-01-31 13:45:23,182 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-01-31 13:45:24,243 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 13:45:24,243 INFO L93 Difference]: Finished difference Result 50 states and 69 transitions. [2022-01-31 13:45:24,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-31 13:45:24,260 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 1.8571428571428572) internal successors, (13), 5 states have internal predecessors, (13), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 24 [2022-01-31 13:45:24,260 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 13:45:24,261 INFO L225 Difference]: With dead ends: 50 [2022-01-31 13:45:24,261 INFO L226 Difference]: Without dead ends: 48 [2022-01-31 13:45:24,261 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2022-01-31 13:45:24,262 INFO L933 BasicCegarLoop]: 29 mSDtfsCounter, 35 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 192 mSolverCounterSat, 54 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 51 SdHoareTripleChecker+Invalid, 248 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 192 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.1s IncrementalHoareTripleChecker+Time [2022-01-31 13:45:24,263 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [45 Valid, 51 Invalid, 248 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 192 Invalid, 2 Unknown, 0 Unchecked, 8.1s Time] [2022-01-31 13:45:24,263 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2022-01-31 13:45:24,271 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 48. [2022-01-31 13:45:24,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48 states, 23 states have (on average 1.2173913043478262) internal successors, (28), 25 states have internal predecessors, (28), 20 states have call successors, (20), 5 states have call predecessors, (20), 4 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) [2022-01-31 13:45:24,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 65 transitions. [2022-01-31 13:45:24,273 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 65 transitions. Word has length 24 [2022-01-31 13:45:24,273 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 13:45:24,273 INFO L470 AbstractCegarLoop]: Abstraction has 48 states and 65 transitions. [2022-01-31 13:45:24,273 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 1.8571428571428572) internal successors, (13), 5 states have internal predecessors, (13), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-01-31 13:45:24,273 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 65 transitions. [2022-01-31 13:45:24,274 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-01-31 13:45:24,274 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 13:45:24,274 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 13:45:24,274 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-31 13:45:24,274 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 13:45:24,275 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 13:45:24,275 INFO L85 PathProgramCache]: Analyzing trace with hash -472493455, now seen corresponding path program 1 times [2022-01-31 13:45:24,278 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-31 13:45:24,279 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [161572290] [2022-01-31 13:45:24,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 13:45:24,279 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 13:45:24,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 13:45:24,514 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 13:45:24,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 13:45:24,526 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-01-31 13:45:24,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 13:45:24,533 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-01-31 13:45:24,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 13:45:24,541 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-01-31 13:45:24,541 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-31 13:45:24,542 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [161572290] [2022-01-31 13:45:24,542 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [161572290] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-31 13:45:24,542 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1825668137] [2022-01-31 13:45:24,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 13:45:24,542 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-31 13:45:24,542 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-31 13:45:24,544 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-31 13:45:24,545 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-01-31 13:45:24,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 13:45:24,580 INFO L263 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 16 conjunts are in the unsatisfiable core [2022-01-31 13:45:24,585 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-31 13:45:24,955 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-31 13:45:24,956 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-31 13:45:25,188 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-31 13:45:25,189 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1825668137] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-31 13:45:25,189 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-31 13:45:25,189 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9, 9] total 19 [2022-01-31 13:45:25,189 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1786222065] [2022-01-31 13:45:25,189 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-31 13:45:25,190 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-01-31 13:45:25,190 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-31 13:45:25,190 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-01-31 13:45:25,191 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=296, Unknown=0, NotChecked=0, Total=342 [2022-01-31 13:45:25,191 INFO L87 Difference]: Start difference. First operand 48 states and 65 transitions. Second operand has 19 states, 19 states have (on average 1.8421052631578947) internal successors, (35), 14 states have internal predecessors, (35), 6 states have call successors, (10), 4 states have call predecessors, (10), 2 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-01-31 13:45:29,352 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-01-31 13:45:34,121 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-31 13:45:35,947 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.06s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-31 13:45:38,748 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.76s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-31 13:45:41,953 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.13s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-31 13:45:44,263 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-31 13:45:48,704 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 13:45:48,705 INFO L93 Difference]: Finished difference Result 62 states and 83 transitions. [2022-01-31 13:45:48,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-01-31 13:45:48,706 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 1.8421052631578947) internal successors, (35), 14 states have internal predecessors, (35), 6 states have call successors, (10), 4 states have call predecessors, (10), 2 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 26 [2022-01-31 13:45:48,706 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 13:45:48,707 INFO L225 Difference]: With dead ends: 62 [2022-01-31 13:45:48,707 INFO L226 Difference]: Without dead ends: 62 [2022-01-31 13:45:48,708 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 47 SyntacticMatches, 1 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 103 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=121, Invalid=691, Unknown=0, NotChecked=0, Total=812 [2022-01-31 13:45:48,709 INFO L933 BasicCegarLoop]: 34 mSDtfsCounter, 67 mSDsluCounter, 71 mSDsCounter, 0 mSdLazyCounter, 598 mSolverCounterSat, 137 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 23.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 76 SdHoareTripleChecker+Valid, 105 SdHoareTripleChecker+Invalid, 738 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 137 IncrementalHoareTripleChecker+Valid, 598 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 23.3s IncrementalHoareTripleChecker+Time [2022-01-31 13:45:48,710 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [76 Valid, 105 Invalid, 738 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [137 Valid, 598 Invalid, 3 Unknown, 0 Unchecked, 23.3s Time] [2022-01-31 13:45:48,710 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2022-01-31 13:45:48,743 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 60. [2022-01-31 13:45:48,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60 states, 28 states have (on average 1.1428571428571428) internal successors, (32), 30 states have internal predecessors, (32), 26 states have call successors, (26), 6 states have call predecessors, (26), 5 states have return successors, (23), 23 states have call predecessors, (23), 23 states have call successors, (23) [2022-01-31 13:45:48,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 81 transitions. [2022-01-31 13:45:48,749 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 81 transitions. Word has length 26 [2022-01-31 13:45:48,749 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 13:45:48,749 INFO L470 AbstractCegarLoop]: Abstraction has 60 states and 81 transitions. [2022-01-31 13:45:48,749 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 1.8421052631578947) internal successors, (35), 14 states have internal predecessors, (35), 6 states have call successors, (10), 4 states have call predecessors, (10), 2 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-01-31 13:45:48,750 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 81 transitions. [2022-01-31 13:45:48,750 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2022-01-31 13:45:48,750 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 13:45:48,751 INFO L514 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 13:45:48,772 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-01-31 13:45:48,955 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-31 13:45:48,955 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 13:45:48,955 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 13:45:48,956 INFO L85 PathProgramCache]: Analyzing trace with hash 1385093780, now seen corresponding path program 1 times [2022-01-31 13:45:48,956 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-31 13:45:48,956 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1080660004] [2022-01-31 13:45:48,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 13:45:48,956 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 13:45:48,981 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-01-31 13:45:48,981 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [696767943] [2022-01-31 13:45:48,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 13:45:48,982 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-31 13:45:48,982 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-31 13:45:49,007 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-31 13:45:49,026 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-01-31 13:45:49,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 13:45:49,113 INFO L263 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 9 conjunts are in the unsatisfiable core [2022-01-31 13:45:49,115 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-31 13:45:49,287 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-01-31 13:45:49,288 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-31 13:45:49,288 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-31 13:45:49,288 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1080660004] [2022-01-31 13:45:49,288 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-01-31 13:45:49,288 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [696767943] [2022-01-31 13:45:49,290 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [696767943] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 13:45:49,290 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 13:45:49,290 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-31 13:45:49,290 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1245390611] [2022-01-31 13:45:49,290 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 13:45:49,291 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-31 13:45:49,291 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-31 13:45:49,291 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-31 13:45:49,292 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-31 13:45:49,292 INFO L87 Difference]: Start difference. First operand 60 states and 81 transitions. Second operand has 5 states, 5 states have (on average 3.2) internal successors, (16), 4 states have internal predecessors, (16), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-31 13:45:50,813 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.08s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-01-31 13:45:50,814 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 13:45:50,814 INFO L93 Difference]: Finished difference Result 68 states and 87 transitions. [2022-01-31 13:45:50,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-31 13:45:50,829 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 4 states have internal predecessors, (16), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 34 [2022-01-31 13:45:50,830 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 13:45:50,830 INFO L225 Difference]: With dead ends: 68 [2022-01-31 13:45:50,830 INFO L226 Difference]: Without dead ends: 47 [2022-01-31 13:45:50,831 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-01-31 13:45:50,832 INFO L933 BasicCegarLoop]: 46 mSDtfsCounter, 6 mSDsluCounter, 114 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 160 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-01-31 13:45:50,832 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [10 Valid, 160 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-01-31 13:45:50,833 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2022-01-31 13:45:50,836 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 47. [2022-01-31 13:45:50,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47 states, 23 states have (on average 1.1304347826086956) internal successors, (26), 24 states have internal predecessors, (26), 19 states have call successors, (19), 5 states have call predecessors, (19), 4 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) [2022-01-31 13:45:50,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 62 transitions. [2022-01-31 13:45:50,838 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 62 transitions. Word has length 34 [2022-01-31 13:45:50,838 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 13:45:50,838 INFO L470 AbstractCegarLoop]: Abstraction has 47 states and 62 transitions. [2022-01-31 13:45:50,838 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 4 states have internal predecessors, (16), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-31 13:45:50,838 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 62 transitions. [2022-01-31 13:45:50,843 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-01-31 13:45:50,843 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 13:45:50,843 INFO L514 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 13:45:50,851 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-01-31 13:45:51,047 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2022-01-31 13:45:51,048 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 13:45:51,048 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 13:45:51,048 INFO L85 PathProgramCache]: Analyzing trace with hash 419889614, now seen corresponding path program 1 times [2022-01-31 13:45:51,048 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-31 13:45:51,049 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [711921665] [2022-01-31 13:45:51,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 13:45:51,049 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 13:45:51,070 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-01-31 13:45:51,070 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1172700669] [2022-01-31 13:45:51,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 13:45:51,071 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-31 13:45:51,071 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-31 13:45:51,076 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-31 13:45:51,082 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-01-31 13:45:51,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 13:45:51,152 INFO L263 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 7 conjunts are in the unsatisfiable core [2022-01-31 13:45:51,154 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-31 13:45:51,276 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-01-31 13:45:51,276 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-31 13:45:51,276 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-31 13:45:51,277 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [711921665] [2022-01-31 13:45:51,277 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-01-31 13:45:51,277 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1172700669] [2022-01-31 13:45:51,277 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1172700669] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 13:45:51,277 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 13:45:51,277 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-31 13:45:51,283 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [821888145] [2022-01-31 13:45:51,283 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 13:45:51,284 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-31 13:45:51,284 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-31 13:45:51,284 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-31 13:45:51,284 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-31 13:45:51,285 INFO L87 Difference]: Start difference. First operand 47 states and 62 transitions. Second operand has 5 states, 5 states have (on average 3.4) internal successors, (17), 4 states have internal predecessors, (17), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-31 13:45:53,329 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-01-31 13:45:55,347 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-01-31 13:45:55,460 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 13:45:55,460 INFO L93 Difference]: Finished difference Result 55 states and 68 transitions. [2022-01-31 13:45:55,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-31 13:45:55,461 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.4) internal successors, (17), 4 states have internal predecessors, (17), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 36 [2022-01-31 13:45:55,461 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 13:45:55,462 INFO L225 Difference]: With dead ends: 55 [2022-01-31 13:45:55,462 INFO L226 Difference]: Without dead ends: 55 [2022-01-31 13:45:55,463 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-01-31 13:45:55,464 INFO L933 BasicCegarLoop]: 48 mSDtfsCounter, 5 mSDsluCounter, 118 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 1 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 166 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.2s IncrementalHoareTripleChecker+Time [2022-01-31 13:45:55,464 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9 Valid, 166 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 28 Invalid, 2 Unknown, 0 Unchecked, 4.2s Time] [2022-01-31 13:45:55,465 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2022-01-31 13:45:55,470 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 55. [2022-01-31 13:45:55,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55 states, 29 states have (on average 1.103448275862069) internal successors, (32), 30 states have internal predecessors, (32), 19 states have call successors, (19), 7 states have call predecessors, (19), 6 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) [2022-01-31 13:45:55,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 68 transitions. [2022-01-31 13:45:55,471 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 68 transitions. Word has length 36 [2022-01-31 13:45:55,471 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 13:45:55,472 INFO L470 AbstractCegarLoop]: Abstraction has 55 states and 68 transitions. [2022-01-31 13:45:55,472 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.4) internal successors, (17), 4 states have internal predecessors, (17), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-31 13:45:55,472 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 68 transitions. [2022-01-31 13:45:55,473 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2022-01-31 13:45:55,473 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 13:45:55,473 INFO L514 BasicCegarLoop]: trace histogram [7, 6, 6, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 13:45:55,479 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-01-31 13:45:55,677 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-31 13:45:55,678 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 13:45:55,678 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 13:45:55,678 INFO L85 PathProgramCache]: Analyzing trace with hash 1513839050, now seen corresponding path program 1 times [2022-01-31 13:45:55,679 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-31 13:45:55,679 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1399617852] [2022-01-31 13:45:55,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 13:45:55,679 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 13:45:55,690 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-01-31 13:45:55,690 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1556916082] [2022-01-31 13:45:55,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 13:45:55,690 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-31 13:45:55,690 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-31 13:45:55,703 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-31 13:45:55,715 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-01-31 13:45:55,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 13:45:55,889 INFO L263 TraceCheckSpWp]: Trace formula consists of 150 conjuncts, 29 conjunts are in the unsatisfiable core [2022-01-31 13:45:55,892 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-31 13:45:56,364 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 12 proven. 7 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2022-01-31 13:45:56,364 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-31 13:46:00,691 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse1 (mod c_main_~q~0 4294967296))) (or (let ((.cse0 (div .cse1 4))) (< (mod (+ (* 4294967295 .cse0) c_main_~r~0 (* 4294967295 c_main_~p~0)) 4294967296) (mod (+ (* 3 .cse0) (* 2 (div (mod c_main_~p~0 4294967296) 2))) 4294967296))) (= .cse1 1))) is different from false [2022-01-31 13:46:24,020 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse1 (mod c_main_~q~0 4294967296))) (or (let ((.cse0 (div .cse1 4))) (< (mod (+ (* 4294967295 .cse0) c_main_~r~0 (* 4294967295 c_main_~p~0)) 4294967296) (mod (+ (* 3 .cse0) (* 2 (div (mod c_main_~p~0 4294967296) 2))) 4294967296))) (<= .cse1 (mod c_main_~n~0 4294967296)) (= .cse1 1))) is different from false [2022-01-31 13:46:43,112 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse1 (mod (* c_main_~q~0 4) 4294967296)) (.cse2 (mod c_main_~n~0 4294967296))) (or (let ((.cse0 (div .cse1 4))) (< (mod (+ (* 4294967295 .cse0) c_main_~r~0 (* 4294967295 c_main_~p~0)) 4294967296) (mod (+ (* 2 (div (mod c_main_~p~0 4294967296) 2)) (* 3 .cse0)) 4294967296))) (<= .cse1 .cse2) (< .cse2 (mod c_main_~q~0 4294967296)))) is different from false [2022-01-31 13:46:45,204 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse1 (mod (* c_main_~q~0 4) 4294967296)) (.cse2 (mod c_main_~n~0 4294967296))) (or (let ((.cse0 (div .cse1 4))) (< (mod (+ (* 4294967295 .cse0) c_main_~r~0 (* 4294967295 c_main_~p~0)) 4294967296) (mod (+ (* 2 (div (mod c_main_~p~0 4294967296) 2)) (* 3 .cse0)) 4294967296))) (<= .cse1 .cse2) (< .cse2 (mod c_main_~q~0 4294967296)))) is different from true [2022-01-31 13:46:57,917 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 64 trivial. 4 not checked. [2022-01-31 13:46:57,917 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-31 13:46:57,917 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1399617852] [2022-01-31 13:46:57,918 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-01-31 13:46:57,918 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1556916082] [2022-01-31 13:46:57,918 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1556916082] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-31 13:46:57,918 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-01-31 13:46:57,918 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 9] total 17 [2022-01-31 13:46:57,918 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1353925761] [2022-01-31 13:46:57,918 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-01-31 13:46:57,919 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-01-31 13:46:57,919 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-31 13:46:57,919 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-01-31 13:46:57,920 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=152, Unknown=4, NotChecked=78, Total=272 [2022-01-31 13:46:57,920 INFO L87 Difference]: Start difference. First operand 55 states and 68 transitions. Second operand has 17 states, 17 states have (on average 1.9411764705882353) internal successors, (33), 15 states have internal predecessors, (33), 6 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (17), 4 states have call predecessors, (17), 4 states have call successors, (17) [2022-01-31 13:47:04,389 WARN L228 SmtUtils]: Spent 6.40s on a formula simplification. DAG size of input: 44 DAG size of output: 25 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-01-31 13:47:28,487 WARN L228 SmtUtils]: Spent 24.08s on a formula simplification. DAG size of input: 43 DAG size of output: 27 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-01-31 13:47:31,000 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-31 13:47:33,811 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.94s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-01-31 13:47:36,843 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-31 13:47:38,132 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 13:47:38,132 INFO L93 Difference]: Finished difference Result 73 states and 94 transitions. [2022-01-31 13:47:38,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-01-31 13:47:38,133 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 1.9411764705882353) internal successors, (33), 15 states have internal predecessors, (33), 6 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (17), 4 states have call predecessors, (17), 4 states have call successors, (17) Word has length 59 [2022-01-31 13:47:38,133 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 13:47:38,134 INFO L225 Difference]: With dead ends: 73 [2022-01-31 13:47:38,134 INFO L226 Difference]: Without dead ends: 73 [2022-01-31 13:47:38,134 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 101 SyntacticMatches, 2 SemanticMatches, 19 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 39.1s TimeCoverageRelationStatistics Valid=58, Invalid=256, Unknown=4, NotChecked=102, Total=420 [2022-01-31 13:47:38,135 INFO L933 BasicCegarLoop]: 49 mSDtfsCounter, 22 mSDsluCounter, 402 mSDsCounter, 0 mSdLazyCounter, 202 mSolverCounterSat, 37 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 451 SdHoareTripleChecker+Invalid, 370 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 202 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 129 IncrementalHoareTripleChecker+Unchecked, 9.7s IncrementalHoareTripleChecker+Time [2022-01-31 13:47:38,135 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [30 Valid, 451 Invalid, 370 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 202 Invalid, 2 Unknown, 129 Unchecked, 9.7s Time] [2022-01-31 13:47:38,139 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2022-01-31 13:47:38,145 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 62. [2022-01-31 13:47:38,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62 states, 34 states have (on average 1.088235294117647) internal successors, (37), 36 states have internal predecessors, (37), 20 states have call successors, (20), 8 states have call predecessors, (20), 7 states have return successors, (18), 17 states have call predecessors, (18), 18 states have call successors, (18) [2022-01-31 13:47:38,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 75 transitions. [2022-01-31 13:47:38,147 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 75 transitions. Word has length 59 [2022-01-31 13:47:38,147 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 13:47:38,147 INFO L470 AbstractCegarLoop]: Abstraction has 62 states and 75 transitions. [2022-01-31 13:47:38,147 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 1.9411764705882353) internal successors, (33), 15 states have internal predecessors, (33), 6 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (17), 4 states have call predecessors, (17), 4 states have call successors, (17) [2022-01-31 13:47:38,148 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 75 transitions. [2022-01-31 13:47:38,149 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2022-01-31 13:47:38,149 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 13:47:38,149 INFO L514 BasicCegarLoop]: trace histogram [8, 7, 7, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 13:47:38,156 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-01-31 13:47:38,356 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-31 13:47:38,357 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 13:47:38,357 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 13:47:38,357 INFO L85 PathProgramCache]: Analyzing trace with hash 1266975567, now seen corresponding path program 2 times [2022-01-31 13:47:38,357 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-31 13:47:38,357 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1276997720] [2022-01-31 13:47:38,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 13:47:38,358 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 13:47:38,368 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-01-31 13:47:38,368 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1157528029] [2022-01-31 13:47:38,368 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-31 13:47:38,368 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-31 13:47:38,368 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-31 13:47:38,369 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-31 13:47:38,374 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process