/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/loopacceleration/qvasr/qvasr_64.epf -i ../../../trunk/examples/svcomp/nla-digbench-scaling/lcm2_valuebound5.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-34549b5 [2022-04-06 12:56:23,965 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-04-06 12:56:23,966 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-04-06 12:56:23,993 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-04-06 12:56:23,993 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-04-06 12:56:23,994 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-04-06 12:56:23,996 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-04-06 12:56:24,000 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-04-06 12:56:24,001 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-04-06 12:56:24,006 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-04-06 12:56:24,006 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-04-06 12:56:24,007 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-04-06 12:56:24,007 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-04-06 12:56:24,007 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-04-06 12:56:24,008 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-04-06 12:56:24,008 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-04-06 12:56:24,009 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-04-06 12:56:24,009 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-04-06 12:56:24,010 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-04-06 12:56:24,011 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-04-06 12:56:24,012 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-04-06 12:56:24,014 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-04-06 12:56:24,015 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-04-06 12:56:24,018 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-04-06 12:56:24,019 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-04-06 12:56:24,025 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-04-06 12:56:24,030 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-04-06 12:56:24,031 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-04-06 12:56:24,033 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-04-06 12:56:24,033 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/loopacceleration/qvasr/qvasr_64.epf [2022-04-06 12:56:24,053 INFO L113 SettingsManager]: Loading preferences was successful [2022-04-06 12:56:24,053 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-04-06 12:56:24,054 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-04-06 12:56:24,054 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-04-06 12:56:24,054 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-04-06 12:56:24,054 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-04-06 12:56:24,054 INFO L138 SettingsManager]: * Use SBE=true [2022-04-06 12:56:24,055 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-04-06 12:56:24,055 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-04-06 12:56:24,055 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-04-06 12:56:24,055 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-04-06 12:56:24,055 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-04-06 12:56:24,055 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-04-06 12:56:24,055 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-04-06 12:56:24,055 INFO L138 SettingsManager]: * Use constant arrays=true [2022-04-06 12:56:24,055 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-04-06 12:56:24,055 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-04-06 12:56:24,055 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-04-06 12:56:24,055 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-04-06 12:56:24,056 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-04-06 12:56:24,056 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-04-06 12:56:24,056 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-04-06 12:56:24,056 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-04-06 12:56:24,056 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-04-06 12:56:24,056 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-04-06 12:56:24,056 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-04-06 12:56:24,056 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-04-06 12:56:24,056 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-04-06 12:56:24,057 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-04-06 12:56:24,057 INFO L138 SettingsManager]: * TransformationType=LOOP_ACCELERATION_QVASR 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-04-06 12:56:24,244 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-04-06 12:56:24,265 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-04-06 12:56:24,266 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-04-06 12:56:24,267 INFO L271 PluginConnector]: Initializing CDTParser... [2022-04-06 12:56:24,268 INFO L275 PluginConnector]: CDTParser initialized [2022-04-06 12:56:24,269 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/nla-digbench-scaling/lcm2_valuebound5.c [2022-04-06 12:56:24,310 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/03db8c9be/ab7b7924c4d24d3083789ae041a35276/FLAG06ffbddbc [2022-04-06 12:56:24,664 INFO L306 CDTParser]: Found 1 translation units. [2022-04-06 12:56:24,670 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench-scaling/lcm2_valuebound5.c [2022-04-06 12:56:24,675 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/03db8c9be/ab7b7924c4d24d3083789ae041a35276/FLAG06ffbddbc [2022-04-06 12:56:25,101 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/03db8c9be/ab7b7924c4d24d3083789ae041a35276 [2022-04-06 12:56:25,103 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-04-06 12:56:25,105 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-04-06 12:56:25,117 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-04-06 12:56:25,117 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-04-06 12:56:25,119 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-04-06 12:56:25,120 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.04 12:56:25" (1/1) ... [2022-04-06 12:56:25,121 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5f7e535f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.04 12:56:25, skipping insertion in model container [2022-04-06 12:56:25,127 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.04 12:56:25" (1/1) ... [2022-04-06 12:56:25,134 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-04-06 12:56:25,146 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-04-06 12:56:25,261 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/lcm2_valuebound5.c[537,550] [2022-04-06 12:56:25,270 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-04-06 12:56:25,274 INFO L203 MainTranslator]: Completed pre-run [2022-04-06 12:56:25,282 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/lcm2_valuebound5.c[537,550] [2022-04-06 12:56:25,286 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-04-06 12:56:25,294 INFO L208 MainTranslator]: Completed translation [2022-04-06 12:56:25,295 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.04 12:56:25 WrapperNode [2022-04-06 12:56:25,295 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-04-06 12:56:25,295 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-04-06 12:56:25,296 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-04-06 12:56:25,296 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-04-06 12:56:25,302 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.04 12:56:25" (1/1) ... [2022-04-06 12:56:25,302 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.04 12:56:25" (1/1) ... [2022-04-06 12:56:25,306 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.04 12:56:25" (1/1) ... [2022-04-06 12:56:25,306 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.04 12:56:25" (1/1) ... [2022-04-06 12:56:25,309 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.04 12:56:25" (1/1) ... [2022-04-06 12:56:25,311 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.04 12:56:25" (1/1) ... [2022-04-06 12:56:25,311 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.04 12:56:25" (1/1) ... [2022-04-06 12:56:25,312 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-04-06 12:56:25,314 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-04-06 12:56:25,314 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-04-06 12:56:25,314 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-04-06 12:56:25,314 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.04 12:56:25" (1/1) ... [2022-04-06 12:56:25,322 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-04-06 12:56:25,332 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-06 12:56:25,341 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) [2022-04-06 12:56:25,346 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 [2022-04-06 12:56:25,368 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2022-04-06 12:56:25,369 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-04-06 12:56:25,369 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2022-04-06 12:56:25,369 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-04-06 12:56:25,369 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-04-06 12:56:25,369 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2022-04-06 12:56:25,370 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2022-04-06 12:56:25,370 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2022-04-06 12:56:25,371 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2022-04-06 12:56:25,371 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-04-06 12:56:25,371 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uint [2022-04-06 12:56:25,371 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-04-06 12:56:25,371 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-04-06 12:56:25,371 INFO L130 BoogieDeclarations]: Found specification of procedure main [2022-04-06 12:56:25,371 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2022-04-06 12:56:25,371 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-04-06 12:56:25,371 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-04-06 12:56:25,372 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-04-06 12:56:25,372 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-04-06 12:56:25,372 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-04-06 12:56:25,413 INFO L234 CfgBuilder]: Building ICFG [2022-04-06 12:56:25,414 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-04-06 12:56:25,507 INFO L275 CfgBuilder]: Performing block encoding [2022-04-06 12:56:25,510 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-04-06 12:56:25,511 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-04-06 12:56:25,512 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.04 12:56:25 BoogieIcfgContainer [2022-04-06 12:56:25,512 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-04-06 12:56:25,512 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-04-06 12:56:25,512 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-04-06 12:56:25,513 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-04-06 12:56:25,515 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.04 12:56:25" (1/1) ... [2022-04-06 12:56:25,516 INFO L168 ansformationObserver]: Applying ICFG transformation LOOP_ACCELERATION_QVASR [2022-04-06 12:56:25,526 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 06.04 12:56:25 BasicIcfg [2022-04-06 12:56:25,526 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-04-06 12:56:25,527 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-04-06 12:56:25,527 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-04-06 12:56:25,529 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-04-06 12:56:25,529 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.04 12:56:25" (1/4) ... [2022-04-06 12:56:25,530 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@296f5ec1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.04 12:56:25, skipping insertion in model container [2022-04-06 12:56:25,530 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.04 12:56:25" (2/4) ... [2022-04-06 12:56:25,530 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@296f5ec1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.04 12:56:25, skipping insertion in model container [2022-04-06 12:56:25,530 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.04 12:56:25" (3/4) ... [2022-04-06 12:56:25,530 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@296f5ec1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.04 12:56:25, skipping insertion in model container [2022-04-06 12:56:25,530 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 06.04 12:56:25" (4/4) ... [2022-04-06 12:56:25,531 INFO L111 eAbstractionObserver]: Analyzing ICFG lcm2_valuebound5.cqvasr [2022-04-06 12:56:25,534 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-04-06 12:56:25,534 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-04-06 12:56:25,561 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-04-06 12:56:25,565 INFO L340 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP [2022-04-06 12:56:25,566 INFO L341 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-04-06 12:56:25,575 INFO L276 IsEmpty]: Start isEmpty. Operand has 34 states, 18 states have (on average 1.3888888888888888) internal successors, (25), 19 states have internal predecessors, (25), 10 states have call successors, (10), 4 states have call predecessors, (10), 4 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2022-04-06 12:56:25,579 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2022-04-06 12:56:25,579 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 12:56:25,579 INFO L499 BasicCegarLoop]: trace histogram [6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-06 12:56:25,579 INFO L403 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 12:56:25,582 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 12:56:25,583 INFO L85 PathProgramCache]: Analyzing trace with hash -419271626, now seen corresponding path program 1 times [2022-04-06 12:56:25,588 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 12:56:25,588 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [602795304] [2022-04-06 12:56:25,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 12:56:25,589 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 12:56:25,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 12:56:25,691 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 12:56:25,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 12:56:25,700 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-06 12:56:25,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 12:56:25,704 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-06 12:56:25,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 12:56:25,709 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-04-06 12:56:25,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 12:56:25,714 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-04-06 12:56:25,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 12:56:25,719 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-04-06 12:56:25,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 12:56:25,723 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-04-06 12:56:25,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 12:56:25,728 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2022-04-06 12:56:25,729 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 12:56:25,729 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [602795304] [2022-04-06 12:56:25,729 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [602795304] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 12:56:25,729 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 12:56:25,730 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-04-06 12:56:25,731 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [169993058] [2022-04-06 12:56:25,731 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 12:56:25,733 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-04-06 12:56:25,734 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-06 12:56:25,749 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-04-06 12:56:25,749 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-04-06 12:56:25,751 INFO L87 Difference]: Start difference. First operand has 34 states, 18 states have (on average 1.3888888888888888) internal successors, (25), 19 states have internal predecessors, (25), 10 states have call successors, (10), 4 states have call predecessors, (10), 4 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) Second operand has 3 states, 3 states have (on average 4.0) internal successors, (12), 2 states have internal predecessors, (12), 2 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-04-06 12:56:25,801 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 12:56:25,801 INFO L93 Difference]: Finished difference Result 61 states and 90 transitions. [2022-04-06 12:56:25,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-04-06 12:56:25,803 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 2 states have internal predecessors, (12), 2 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 43 [2022-04-06 12:56:25,803 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 12:56:25,808 INFO L225 Difference]: With dead ends: 61 [2022-04-06 12:56:25,808 INFO L226 Difference]: Without dead ends: 29 [2022-04-06 12:56:25,810 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-04-06 12:56:25,812 INFO L913 BasicCegarLoop]: 33 mSDtfsCounter, 18 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 36 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-04-06 12:56:25,812 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [26 Valid, 36 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-04-06 12:56:25,822 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2022-04-06 12:56:25,854 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2022-04-06 12:56:25,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 15 states have (on average 1.2) internal successors, (18), 16 states have internal predecessors, (18), 10 states have call successors, (10), 4 states have call predecessors, (10), 3 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2022-04-06 12:56:25,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 36 transitions. [2022-04-06 12:56:25,857 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 36 transitions. Word has length 43 [2022-04-06 12:56:25,857 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 12:56:25,857 INFO L478 AbstractCegarLoop]: Abstraction has 29 states and 36 transitions. [2022-04-06 12:56:25,857 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 2 states have internal predecessors, (12), 2 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-04-06 12:56:25,857 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 36 transitions. [2022-04-06 12:56:25,858 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2022-04-06 12:56:25,858 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 12:56:25,859 INFO L499 BasicCegarLoop]: trace histogram [6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-06 12:56:25,859 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-04-06 12:56:25,859 INFO L403 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 12:56:25,859 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 12:56:25,860 INFO L85 PathProgramCache]: Analyzing trace with hash -1223303911, now seen corresponding path program 1 times [2022-04-06 12:56:25,860 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 12:56:25,860 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [754482921] [2022-04-06 12:56:25,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 12:56:25,860 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 12:56:25,879 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-04-06 12:56:25,879 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1229436889] [2022-04-06 12:56:25,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 12:56:25,880 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 12:56:25,880 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-06 12:56:25,881 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) [2022-04-06 12:56:25,882 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-04-06 12:56:25,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 12:56:25,980 INFO L263 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 30 conjunts are in the unsatisfiable core [2022-04-06 12:56:25,986 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-06 12:56:26,260 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2022-04-06 12:56:26,260 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-04-06 12:56:26,260 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 12:56:26,260 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [754482921] [2022-04-06 12:56:26,261 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-04-06 12:56:26,261 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1229436889] [2022-04-06 12:56:26,261 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1229436889] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 12:56:26,261 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 12:56:26,261 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-04-06 12:56:26,262 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [578380657] [2022-04-06 12:56:26,262 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 12:56:26,262 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-04-06 12:56:26,263 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-06 12:56:26,263 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-04-06 12:56:26,263 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-04-06 12:56:26,263 INFO L87 Difference]: Start difference. First operand 29 states and 36 transitions. Second operand has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 2 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2022-04-06 12:56:26,323 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 12:56:26,323 INFO L93 Difference]: Finished difference Result 40 states and 49 transitions. [2022-04-06 12:56:26,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-04-06 12:56:26,324 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 2 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) Word has length 43 [2022-04-06 12:56:26,324 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 12:56:26,325 INFO L225 Difference]: With dead ends: 40 [2022-04-06 12:56:26,325 INFO L226 Difference]: Without dead ends: 37 [2022-04-06 12:56:26,326 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-04-06 12:56:26,327 INFO L913 BasicCegarLoop]: 30 mSDtfsCounter, 7 mSDsluCounter, 75 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 105 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-04-06 12:56:26,327 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [8 Valid, 105 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-04-06 12:56:26,328 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2022-04-06 12:56:26,332 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 36. [2022-04-06 12:56:26,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 20 states have (on average 1.15) internal successors, (23), 21 states have internal predecessors, (23), 11 states have call successors, (11), 5 states have call predecessors, (11), 4 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2022-04-06 12:56:26,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 43 transitions. [2022-04-06 12:56:26,333 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 43 transitions. Word has length 43 [2022-04-06 12:56:26,334 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 12:56:26,334 INFO L478 AbstractCegarLoop]: Abstraction has 36 states and 43 transitions. [2022-04-06 12:56:26,334 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 2 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2022-04-06 12:56:26,335 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 43 transitions. [2022-04-06 12:56:26,335 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2022-04-06 12:56:26,336 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 12:56:26,336 INFO L499 BasicCegarLoop]: trace histogram [6, 6, 6, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-06 12:56:26,352 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-04-06 12:56:26,552 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 [2022-04-06 12:56:26,553 INFO L403 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 12:56:26,553 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 12:56:26,553 INFO L85 PathProgramCache]: Analyzing trace with hash 1282076869, now seen corresponding path program 1 times [2022-04-06 12:56:26,553 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 12:56:26,554 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [676905534] [2022-04-06 12:56:26,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 12:56:26,554 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 12:56:26,579 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-04-06 12:56:26,579 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [625414328] [2022-04-06 12:56:26,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 12:56:26,579 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 12:56:26,580 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-06 12:56:26,580 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) [2022-04-06 12:56:26,616 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process