/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/bresenham-ll_valuebound2.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-b030c9e [2022-03-20 04:53:51,130 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-03-20 04:53:51,132 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-03-20 04:53:51,157 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-03-20 04:53:51,158 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-03-20 04:53:51,159 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-03-20 04:53:51,170 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-03-20 04:53:51,176 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-03-20 04:53:51,178 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-03-20 04:53:51,178 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-03-20 04:53:51,179 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-03-20 04:53:51,180 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-03-20 04:53:51,180 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-03-20 04:53:51,181 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-03-20 04:53:51,182 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-03-20 04:53:51,182 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-03-20 04:53:51,183 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-03-20 04:53:51,184 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-03-20 04:53:51,185 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-03-20 04:53:51,186 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-03-20 04:53:51,191 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-03-20 04:53:51,196 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-03-20 04:53:51,198 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-03-20 04:53:51,198 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-03-20 04:53:51,201 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-03-20 04:53:51,209 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-03-20 04:53:51,211 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-03-20 04:53:51,212 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-03-20 04:53:51,212 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-03-20 04:53:51,213 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-03-20 04:53:51,213 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-03-20 04:53:51,214 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-03-20 04:53:51,214 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-03-20 04:53:51,214 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-03-20 04:53:51,215 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-03-20 04:53:51,216 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-03-20 04:53:51,219 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-03-20 04:53:51,220 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/LoopAccelerationJordanC.epf [2022-03-20 04:53:51,234 INFO L113 SettingsManager]: Loading preferences was successful [2022-03-20 04:53:51,235 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-03-20 04:53:51,238 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-03-20 04:53:51,238 INFO L138 SettingsManager]: * sizeof long=4 [2022-03-20 04:53:51,238 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-03-20 04:53:51,239 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-03-20 04:53:51,239 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-03-20 04:53:51,239 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-03-20 04:53:51,239 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-03-20 04:53:51,240 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-03-20 04:53:51,240 INFO L138 SettingsManager]: * sizeof long double=12 [2022-03-20 04:53:51,240 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-03-20 04:53:51,240 INFO L138 SettingsManager]: * Use constant arrays=true [2022-03-20 04:53:51,240 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-03-20 04:53:51,240 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-03-20 04:53:51,241 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-03-20 04:53:51,241 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-03-20 04:53:51,241 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-03-20 04:53:51,241 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-03-20 04:53:51,241 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-03-20 04:53:51,241 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-03-20 04:53:51,242 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-03-20 04:53:51,242 INFO L138 SettingsManager]: * TransformationType=LOOP_ACCELERATION_JORDAN WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-03-20 04:53:51,434 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-03-20 04:53:51,462 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-03-20 04:53:51,464 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-03-20 04:53:51,465 INFO L271 PluginConnector]: Initializing CDTParser... [2022-03-20 04:53:51,466 INFO L275 PluginConnector]: CDTParser initialized [2022-03-20 04:53:51,467 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/nla-digbench-scaling/bresenham-ll_valuebound2.c [2022-03-20 04:53:51,511 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ab4b833a4/6cf2029ab1c94f4f84c5b6af74666e68/FLAG126b3d7f5 [2022-03-20 04:53:51,866 INFO L306 CDTParser]: Found 1 translation units. [2022-03-20 04:53:51,867 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench-scaling/bresenham-ll_valuebound2.c [2022-03-20 04:53:51,871 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ab4b833a4/6cf2029ab1c94f4f84c5b6af74666e68/FLAG126b3d7f5 [2022-03-20 04:53:52,296 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ab4b833a4/6cf2029ab1c94f4f84c5b6af74666e68 [2022-03-20 04:53:52,298 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-03-20 04:53:52,299 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-03-20 04:53:52,300 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-03-20 04:53:52,301 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-03-20 04:53:52,303 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-03-20 04:53:52,304 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.03 04:53:52" (1/1) ... [2022-03-20 04:53:52,304 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@436c93ad and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 04:53:52, skipping insertion in model container [2022-03-20 04:53:52,305 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.03 04:53:52" (1/1) ... [2022-03-20 04:53:52,310 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-03-20 04:53:52,324 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-03-20 04:53:52,527 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/bresenham-ll_valuebound2.c[597,610] [2022-03-20 04:53:52,544 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-03-20 04:53:52,550 INFO L203 MainTranslator]: Completed pre-run [2022-03-20 04:53:52,559 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/bresenham-ll_valuebound2.c[597,610] [2022-03-20 04:53:52,564 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-03-20 04:53:52,573 INFO L208 MainTranslator]: Completed translation [2022-03-20 04:53:52,573 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 04:53:52 WrapperNode [2022-03-20 04:53:52,574 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-03-20 04:53:52,574 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-03-20 04:53:52,575 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-03-20 04:53:52,575 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-03-20 04:53:52,583 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 04:53:52" (1/1) ... [2022-03-20 04:53:52,583 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 04:53:52" (1/1) ... [2022-03-20 04:53:52,588 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 04:53:52" (1/1) ... [2022-03-20 04:53:52,588 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 04:53:52" (1/1) ... [2022-03-20 04:53:52,591 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 04:53:52" (1/1) ... [2022-03-20 04:53:52,594 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 04:53:52" (1/1) ... [2022-03-20 04:53:52,595 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 04:53:52" (1/1) ... [2022-03-20 04:53:52,596 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-03-20 04:53:52,597 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-03-20 04:53:52,597 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-03-20 04:53:52,597 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-03-20 04:53:52,598 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 04:53:52" (1/1) ... [2022-03-20 04:53:52,608 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-03-20 04:53:52,617 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-20 04:53:52,628 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-03-20 04:53:52,635 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-03-20 04:53:52,657 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2022-03-20 04:53:52,657 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-03-20 04:53:52,657 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2022-03-20 04:53:52,657 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-03-20 04:53:52,658 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-03-20 04:53:52,658 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2022-03-20 04:53:52,658 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2022-03-20 04:53:52,658 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2022-03-20 04:53:52,658 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2022-03-20 04:53:52,658 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-03-20 04:53:52,658 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2022-03-20 04:53:52,658 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-03-20 04:53:52,658 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-03-20 04:53:52,659 INFO L130 BoogieDeclarations]: Found specification of procedure main [2022-03-20 04:53:52,659 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2022-03-20 04:53:52,659 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-03-20 04:53:52,659 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-03-20 04:53:52,659 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-03-20 04:53:52,659 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-03-20 04:53:52,659 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-03-20 04:53:52,707 INFO L234 CfgBuilder]: Building ICFG [2022-03-20 04:53:52,708 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-03-20 04:53:52,833 INFO L275 CfgBuilder]: Performing block encoding [2022-03-20 04:53:52,838 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-03-20 04:53:52,838 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-03-20 04:53:52,840 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.03 04:53:52 BoogieIcfgContainer [2022-03-20 04:53:52,841 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-03-20 04:53:52,841 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-03-20 04:53:52,841 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-03-20 04:53:52,842 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-03-20 04:53:52,848 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.03 04:53:52" (1/1) ... [2022-03-20 04:53:52,850 INFO L168 ansformationObserver]: Applying ICFG transformation LOOP_ACCELERATION_JORDAN [2022-03-20 04:53:52,888 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 20.03 04:53:52 BasicIcfg [2022-03-20 04:53:52,888 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-03-20 04:53:52,890 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-03-20 04:53:52,890 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-03-20 04:53:52,892 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-03-20 04:53:52,893 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.03 04:53:52" (1/4) ... [2022-03-20 04:53:52,893 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6af58d5e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.03 04:53:52, skipping insertion in model container [2022-03-20 04:53:52,893 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 04:53:52" (2/4) ... [2022-03-20 04:53:52,894 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6af58d5e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.03 04:53:52, skipping insertion in model container [2022-03-20 04:53:52,894 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.03 04:53:52" (3/4) ... [2022-03-20 04:53:52,894 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6af58d5e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.03 04:53:52, skipping insertion in model container [2022-03-20 04:53:52,894 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 20.03 04:53:52" (4/4) ... [2022-03-20 04:53:52,895 INFO L111 eAbstractionObserver]: Analyzing ICFG bresenham-ll_valuebound2.cJordan [2022-03-20 04:53:52,899 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:ForwardPredicates Determinization: PREDICATE_ABSTRACTION [2022-03-20 04:53:52,899 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-03-20 04:53:52,935 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-03-20 04:53:52,939 INFO L340 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=ForwardPredicates, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP [2022-03-20 04:53:52,940 INFO L341 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-03-20 04:53:52,950 INFO L276 IsEmpty]: Start isEmpty. Operand has 32 states, 20 states have (on average 1.35) internal successors, (27), 21 states have internal predecessors, (27), 6 states have call successors, (6), 4 states have call predecessors, (6), 4 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-03-20 04:53:52,957 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-03-20 04:53:52,957 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 04:53:52,958 INFO L499 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 04:53:52,959 INFO L403 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 04:53:52,967 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 04:53:52,967 INFO L85 PathProgramCache]: Analyzing trace with hash -1563578423, now seen corresponding path program 1 times [2022-03-20 04:53:52,974 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 04:53:52,975 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1017629417] [2022-03-20 04:53:52,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 04:53:52,976 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 04:53:53,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 04:53:53,114 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 04:53:53,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 04:53:53,131 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-20 04:53:53,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 04:53:53,141 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-20 04:53:53,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 04:53:53,149 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-03-20 04:53:53,150 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 04:53:53,150 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1017629417] [2022-03-20 04:53:53,150 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1017629417] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 04:53:53,151 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 04:53:53,151 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-03-20 04:53:53,152 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1227291711] [2022-03-20 04:53:53,153 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 04:53:53,156 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-03-20 04:53:53,156 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-20 04:53:53,178 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-03-20 04:53:53,178 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-03-20 04:53:53,180 INFO L87 Difference]: Start difference. First operand has 32 states, 20 states have (on average 1.35) internal successors, (27), 21 states have internal predecessors, (27), 6 states have call successors, (6), 4 states have call predecessors, (6), 4 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) 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) [2022-03-20 04:53:53,242 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 04:53:53,242 INFO L93 Difference]: Finished difference Result 32 states and 35 transitions. [2022-03-20 04:53:53,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-03-20 04:53:53,244 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 [2022-03-20 04:53:53,244 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 04:53:53,250 INFO L225 Difference]: With dead ends: 32 [2022-03-20 04:53:53,250 INFO L226 Difference]: Without dead ends: 27 [2022-03-20 04:53:53,251 INFO L912 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 [2022-03-20 04:53:53,256 INFO L913 BasicCegarLoop]: 31 mSDtfsCounter, 20 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-20 04:53:53,260 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [24 Valid, 34 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-20 04:53:53,273 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2022-03-20 04:53:53,289 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2022-03-20 04:53:53,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 17 states have (on average 1.1764705882352942) internal successors, (20), 18 states have internal predecessors, (20), 6 states have call successors, (6), 4 states have call predecessors, (6), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-03-20 04:53:53,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 30 transitions. [2022-03-20 04:53:53,293 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 30 transitions. Word has length 23 [2022-03-20 04:53:53,294 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 04:53:53,294 INFO L478 AbstractCegarLoop]: Abstraction has 27 states and 30 transitions. [2022-03-20 04:53:53,294 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, (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) [2022-03-20 04:53:53,294 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 30 transitions. [2022-03-20 04:53:53,295 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-03-20 04:53:53,295 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 04:53:53,295 INFO L499 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 04:53:53,295 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-03-20 04:53:53,295 INFO L403 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 04:53:53,296 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 04:53:53,296 INFO L85 PathProgramCache]: Analyzing trace with hash -1863481077, now seen corresponding path program 1 times [2022-03-20 04:53:53,296 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 04:53:53,296 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2000397470] [2022-03-20 04:53:53,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 04:53:53,297 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 04:53:53,317 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-03-20 04:53:53,317 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [341459506] [2022-03-20 04:53:53,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 04:53:53,317 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-20 04:53:53,318 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-20 04:53:53,324 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-20 04:53:53,326 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-03-20 04:53:53,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 04:53:53,376 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 13 conjunts are in the unsatisfiable core [2022-03-20 04:53:53,382 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-20 04:53:53,533 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-03-20 04:53:53,534 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-03-20 04:53:53,534 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 04:53:53,534 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2000397470] [2022-03-20 04:53:53,534 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-03-20 04:53:53,535 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [341459506] [2022-03-20 04:53:53,537 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [341459506] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 04:53:53,537 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 04:53:53,537 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-03-20 04:53:53,538 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1269338879] [2022-03-20 04:53:53,538 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 04:53:53,539 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-03-20 04:53:53,539 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-20 04:53:53,539 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-03-20 04:53:53,539 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-03-20 04:53:53,540 INFO L87 Difference]: Start difference. First operand 27 states and 30 transitions. Second operand has 6 states, 5 states have (on average 2.4) internal successors, (12), 5 states have internal predecessors, (12), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-03-20 04:53:53,634 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 04:53:53,635 INFO L93 Difference]: Finished difference Result 37 states and 42 transitions. [2022-03-20 04:53:53,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-03-20 04:53:53,636 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.4) internal successors, (12), 5 states have internal predecessors, (12), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 23 [2022-03-20 04:53:53,636 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 04:53:53,637 INFO L225 Difference]: With dead ends: 37 [2022-03-20 04:53:53,637 INFO L226 Difference]: Without dead ends: 35 [2022-03-20 04:53:53,638 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-03-20 04:53:53,639 INFO L913 BasicCegarLoop]: 22 mSDtfsCounter, 10 mSDsluCounter, 79 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 101 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-20 04:53:53,639 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [10 Valid, 101 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-20 04:53:53,643 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2022-03-20 04:53:53,647 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 34. [2022-03-20 04:53:53,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 22 states have (on average 1.1363636363636365) internal successors, (25), 23 states have internal predecessors, (25), 7 states have call successors, (7), 5 states have call predecessors, (7), 4 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2022-03-20 04:53:53,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 37 transitions. [2022-03-20 04:53:53,650 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 37 transitions. Word has length 23 [2022-03-20 04:53:53,651 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 04:53:53,651 INFO L478 AbstractCegarLoop]: Abstraction has 34 states and 37 transitions. [2022-03-20 04:53:53,651 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.4) internal successors, (12), 5 states have internal predecessors, (12), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-03-20 04:53:53,651 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 37 transitions. [2022-03-20 04:53:53,653 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-03-20 04:53:53,653 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 04:53:53,653 INFO L499 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 04:53:53,670 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-03-20 04:53:53,855 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-20 04:53:53,856 INFO L403 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 04:53:53,856 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 04:53:53,856 INFO L85 PathProgramCache]: Analyzing trace with hash -646008129, now seen corresponding path program 1 times [2022-03-20 04:53:53,857 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 04:53:53,857 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1580986318] [2022-03-20 04:53:53,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 04:53:53,857 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 04:53:53,872 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-03-20 04:53:53,873 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1401492103] [2022-03-20 04:53:53,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 04:53:53,873 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-20 04:53:53,873 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-20 04:53:53,876 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-20 04:53:53,892 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-03-20 04:53:53,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 04:53:53,927 INFO L263 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 24 conjunts are in the unsatisfiable core [2022-03-20 04:53:53,932 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-20 04:53:54,329 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-03-20 04:53:54,330 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-20 04:53:54,490 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 04:53:54,491 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1580986318] [2022-03-20 04:53:54,491 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-03-20 04:53:54,491 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1401492103] [2022-03-20 04:53:54,491 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1401492103] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-20 04:53:54,491 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-03-20 04:53:54,491 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2022-03-20 04:53:54,491 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2023388061] [2022-03-20 04:53:54,492 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-03-20 04:53:54,492 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-03-20 04:53:54,492 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-20 04:53:54,492 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-03-20 04:53:54,493 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=144, Unknown=0, NotChecked=0, Total=182 [2022-03-20 04:53:54,493 INFO L87 Difference]: Start difference. First operand 34 states and 37 transitions. Second operand has 11 states, 10 states have (on average 1.9) internal successors, (19), 9 states have internal predecessors, (19), 4 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) [2022-03-20 04:53:54,630 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 04:53:54,631 INFO L93 Difference]: Finished difference Result 48 states and 53 transitions. [2022-03-20 04:53:54,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-03-20 04:53:54,631 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 1.9) internal successors, (19), 9 states have internal predecessors, (19), 4 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) Word has length 32 [2022-03-20 04:53:54,632 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 04:53:54,632 INFO L225 Difference]: With dead ends: 48 [2022-03-20 04:53:54,632 INFO L226 Difference]: Without dead ends: 35 [2022-03-20 04:53:54,633 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 27 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=56, Invalid=216, Unknown=0, NotChecked=0, Total=272 [2022-03-20 04:53:54,633 INFO L913 BasicCegarLoop]: 24 mSDtfsCounter, 36 mSDsluCounter, 117 mSDsCounter, 0 mSdLazyCounter, 126 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 141 SdHoareTripleChecker+Invalid, 141 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 126 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-20 04:53:54,634 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [38 Valid, 141 Invalid, 141 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 126 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-20 04:53:54,634 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2022-03-20 04:53:54,637 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2022-03-20 04:53:54,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 23 states have (on average 1.1304347826086956) internal successors, (26), 24 states have internal predecessors, (26), 7 states have call successors, (7), 5 states have call predecessors, (7), 4 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2022-03-20 04:53:54,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 38 transitions. [2022-03-20 04:53:54,638 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 38 transitions. Word has length 32 [2022-03-20 04:53:54,639 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 04:53:54,639 INFO L478 AbstractCegarLoop]: Abstraction has 35 states and 38 transitions. [2022-03-20 04:53:54,639 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 1.9) internal successors, (19), 9 states have internal predecessors, (19), 4 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) [2022-03-20 04:53:54,639 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 38 transitions. [2022-03-20 04:53:54,640 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-03-20 04:53:54,640 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 04:53:54,640 INFO L499 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 04:53:54,670 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-03-20 04:53:54,859 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2022-03-20 04:53:54,859 INFO L403 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 04:53:54,860 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 04:53:54,860 INFO L85 PathProgramCache]: Analyzing trace with hash 241495552, now seen corresponding path program 1 times [2022-03-20 04:53:54,860 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 04:53:54,860 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1883106154] [2022-03-20 04:53:54,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 04:53:54,861 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 04:53:54,872 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-03-20 04:53:54,872 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [438602434] [2022-03-20 04:53:54,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 04:53:54,872 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-20 04:53:54,873 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-20 04:53:54,874 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-20 04:53:54,903 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-03-20 04:53:54,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 04:53:54,925 INFO L263 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 20 conjunts are in the unsatisfiable core [2022-03-20 04:53:54,927 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-20 04:53:55,120 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-03-20 04:53:55,120 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-20 04:53:55,277 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-03-20 04:53:55,278 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 04:53:55,278 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1883106154] [2022-03-20 04:53:55,278 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-03-20 04:53:55,278 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [438602434] [2022-03-20 04:53:55,278 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [438602434] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-20 04:53:55,278 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-03-20 04:53:55,278 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8] total 13 [2022-03-20 04:53:55,279 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [381067760] [2022-03-20 04:53:55,279 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-03-20 04:53:55,279 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-03-20 04:53:55,279 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-20 04:53:55,280 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-03-20 04:53:55,280 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2022-03-20 04:53:55,280 INFO L87 Difference]: Start difference. First operand 35 states and 38 transitions. Second operand has 13 states, 11 states have (on average 2.272727272727273) internal successors, (25), 12 states have internal predecessors, (25), 5 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2022-03-20 04:53:55,610 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 04:53:55,611 INFO L93 Difference]: Finished difference Result 46 states and 51 transitions. [2022-03-20 04:53:55,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-03-20 04:53:55,611 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 11 states have (on average 2.272727272727273) internal successors, (25), 12 states have internal predecessors, (25), 5 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) Word has length 32 [2022-03-20 04:53:55,612 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 04:53:55,612 INFO L225 Difference]: With dead ends: 46 [2022-03-20 04:53:55,612 INFO L226 Difference]: Without dead ends: 44 [2022-03-20 04:53:55,613 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 50 SyntacticMatches, 2 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=66, Invalid=240, Unknown=0, NotChecked=0, Total=306 [2022-03-20 04:53:55,614 INFO L913 BasicCegarLoop]: 21 mSDtfsCounter, 22 mSDsluCounter, 147 mSDsCounter, 0 mSdLazyCounter, 132 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 168 SdHoareTripleChecker+Invalid, 148 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 132 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-20 04:53:55,614 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [22 Valid, 168 Invalid, 148 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 132 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-03-20 04:53:55,615 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2022-03-20 04:53:55,618 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 37. [2022-03-20 04:53:55,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 25 states have (on average 1.08) internal successors, (27), 25 states have internal predecessors, (27), 7 states have call successors, (7), 6 states have call predecessors, (7), 4 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2022-03-20 04:53:55,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 39 transitions. [2022-03-20 04:53:55,619 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 39 transitions. Word has length 32 [2022-03-20 04:53:55,619 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 04:53:55,619 INFO L478 AbstractCegarLoop]: Abstraction has 37 states and 39 transitions. [2022-03-20 04:53:55,619 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 11 states have (on average 2.272727272727273) internal successors, (25), 12 states have internal predecessors, (25), 5 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2022-03-20 04:53:55,620 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 39 transitions. [2022-03-20 04:53:55,620 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2022-03-20 04:53:55,621 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 04:53:55,621 INFO L499 BasicCegarLoop]: trace histogram [3, 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] [2022-03-20 04:53:55,647 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-03-20 04:53:55,844 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-20 04:53:55,845 INFO L403 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 04:53:55,845 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 04:53:55,845 INFO L85 PathProgramCache]: Analyzing trace with hash -1661983408, now seen corresponding path program 1 times [2022-03-20 04:53:55,845 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 04:53:55,846 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [476310984] [2022-03-20 04:53:55,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 04:53:55,846 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 04:53:55,858 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-03-20 04:53:55,859 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1115302239] [2022-03-20 04:53:55,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 04:53:55,859 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-20 04:53:55,859 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-20 04:53:55,863 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-20 04:53:55,865 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-03-20 04:53:55,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 04:53:55,905 INFO L263 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 26 conjunts are in the unsatisfiable core [2022-03-20 04:53:55,907 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-20 04:53:56,213 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-03-20 04:53:56,214 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-20 04:53:56,612 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 9 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-03-20 04:53:56,613 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 04:53:56,613 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [476310984] [2022-03-20 04:53:56,613 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-03-20 04:53:56,613 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1115302239] [2022-03-20 04:53:56,613 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1115302239] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-20 04:53:56,613 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-03-20 04:53:56,613 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 13] total 22 [2022-03-20 04:53:56,614 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1878871638] [2022-03-20 04:53:56,614 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-03-20 04:53:56,614 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-03-20 04:53:56,614 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-20 04:53:56,615 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-03-20 04:53:56,615 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=389, Unknown=0, NotChecked=0, Total=462 [2022-03-20 04:53:56,615 INFO L87 Difference]: Start difference. First operand 37 states and 39 transitions. Second operand has 22 states, 18 states have (on average 1.8888888888888888) internal successors, (34), 19 states have internal predecessors, (34), 6 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (7), 4 states have call predecessors, (7), 4 states have call successors, (7) [2022-03-20 04:53:57,042 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 04:53:57,043 INFO L93 Difference]: Finished difference Result 54 states and 60 transitions. [2022-03-20 04:53:57,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2022-03-20 04:53:57,043 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 18 states have (on average 1.8888888888888888) internal successors, (34), 19 states have internal predecessors, (34), 6 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (7), 4 states have call predecessors, (7), 4 states have call successors, (7) Word has length 39 [2022-03-20 04:53:57,043 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 04:53:57,044 INFO L225 Difference]: With dead ends: 54 [2022-03-20 04:53:57,044 INFO L226 Difference]: Without dead ends: 48 [2022-03-20 04:53:57,045 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 56 SyntacticMatches, 2 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 227 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=186, Invalid=936, Unknown=0, NotChecked=0, Total=1122 [2022-03-20 04:53:57,045 INFO L913 BasicCegarLoop]: 21 mSDtfsCounter, 27 mSDsluCounter, 205 mSDsCounter, 0 mSdLazyCounter, 142 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 226 SdHoareTripleChecker+Invalid, 198 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 142 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 42 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-20 04:53:57,046 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [28 Valid, 226 Invalid, 198 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 142 Invalid, 0 Unknown, 42 Unchecked, 0.1s Time] [2022-03-20 04:53:57,046 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2022-03-20 04:53:57,049 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 46. [2022-03-20 04:53:57,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46 states, 32 states have (on average 1.09375) internal successors, (35), 32 states have internal predecessors, (35), 9 states have call successors, (9), 6 states have call predecessors, (9), 4 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2022-03-20 04:53:57,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 51 transitions. [2022-03-20 04:53:57,050 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 51 transitions. Word has length 39 [2022-03-20 04:53:57,050 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 04:53:57,051 INFO L478 AbstractCegarLoop]: Abstraction has 46 states and 51 transitions. [2022-03-20 04:53:57,051 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 18 states have (on average 1.8888888888888888) internal successors, (34), 19 states have internal predecessors, (34), 6 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (7), 4 states have call predecessors, (7), 4 states have call successors, (7) [2022-03-20 04:53:57,051 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 51 transitions. [2022-03-20 04:53:57,052 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2022-03-20 04:53:57,052 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 04:53:57,052 INFO L499 BasicCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 04:53:57,079 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-03-20 04:53:57,252 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-20 04:53:57,253 INFO L403 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 04:53:57,253 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 04:53:57,253 INFO L85 PathProgramCache]: Analyzing trace with hash 494880272, now seen corresponding path program 1 times [2022-03-20 04:53:57,253 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 04:53:57,253 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1678135320] [2022-03-20 04:53:57,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 04:53:57,254 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 04:53:57,266 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-03-20 04:53:57,266 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1143020435] [2022-03-20 04:53:57,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 04:53:57,266 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-20 04:53:57,266 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-20 04:53:57,269 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-20 04:53:57,270 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-03-20 04:53:57,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 04:53:57,317 INFO L263 TraceCheckSpWp]: Trace formula consists of 157 conjuncts, 5 conjunts are in the unsatisfiable core [2022-03-20 04:53:57,319 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-20 04:53:57,447 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 29 proven. 13 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-03-20 04:53:57,447 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-20 04:53:57,579 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 19 proven. 13 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2022-03-20 04:53:57,580 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 04:53:57,580 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1678135320] [2022-03-20 04:53:57,580 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-03-20 04:53:57,580 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1143020435] [2022-03-20 04:53:57,580 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1143020435] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-20 04:53:57,580 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-03-20 04:53:57,580 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 6 [2022-03-20 04:53:57,580 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1984217736] [2022-03-20 04:53:57,580 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-03-20 04:53:57,582 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-03-20 04:53:57,582 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-20 04:53:57,582 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-03-20 04:53:57,582 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-03-20 04:53:57,582 INFO L87 Difference]: Start difference. First operand 46 states and 51 transitions. Second operand has 6 states, 6 states have (on average 5.833333333333333) internal successors, (35), 6 states have internal predecessors, (35), 6 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (9), 6 states have call predecessors, (9), 6 states have call successors, (9) [2022-03-20 04:53:57,653 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 04:53:57,653 INFO L93 Difference]: Finished difference Result 62 states and 72 transitions. [2022-03-20 04:53:57,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-03-20 04:53:57,653 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 5.833333333333333) internal successors, (35), 6 states have internal predecessors, (35), 6 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (9), 6 states have call predecessors, (9), 6 states have call successors, (9) Word has length 57 [2022-03-20 04:53:57,654 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 04:53:57,656 INFO L225 Difference]: With dead ends: 62 [2022-03-20 04:53:57,656 INFO L226 Difference]: Without dead ends: 62 [2022-03-20 04:53:57,656 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 107 SyntacticMatches, 2 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2022-03-20 04:53:57,658 INFO L913 BasicCegarLoop]: 33 mSDtfsCounter, 5 mSDsluCounter, 97 mSDsCounter, 0 mSdLazyCounter, 60 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 130 SdHoareTripleChecker+Invalid, 63 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 60 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-20 04:53:57,658 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [5 Valid, 130 Invalid, 63 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 60 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-20 04:53:57,659 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2022-03-20 04:53:57,675 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 60. [2022-03-20 04:53:57,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60 states, 43 states have (on average 1.1162790697674418) internal successors, (48), 43 states have internal predecessors, (48), 12 states have call successors, (12), 6 states have call predecessors, (12), 4 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2022-03-20 04:53:57,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 70 transitions. [2022-03-20 04:53:57,676 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 70 transitions. Word has length 57 [2022-03-20 04:53:57,676 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 04:53:57,676 INFO L478 AbstractCegarLoop]: Abstraction has 60 states and 70 transitions. [2022-03-20 04:53:57,676 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 5.833333333333333) internal successors, (35), 6 states have internal predecessors, (35), 6 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (9), 6 states have call predecessors, (9), 6 states have call successors, (9) [2022-03-20 04:53:57,676 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 70 transitions. [2022-03-20 04:53:57,678 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2022-03-20 04:53:57,678 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 04:53:57,678 INFO L499 BasicCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 04:53:57,702 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-03-20 04:53:57,878 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-20 04:53:57,879 INFO L403 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 04:53:57,879 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 04:53:57,879 INFO L85 PathProgramCache]: Analyzing trace with hash 1739644753, now seen corresponding path program 2 times [2022-03-20 04:53:57,879 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 04:53:57,879 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1981183651] [2022-03-20 04:53:57,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 04:53:57,879 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 04:53:57,898 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-03-20 04:53:57,898 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [241507861] [2022-03-20 04:53:57,898 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-20 04:53:57,898 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-20 04:53:57,898 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-20 04:53:57,900 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-20 04:53:57,930 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-03-20 04:53:57,956 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-20 04:53:57,956 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-20 04:53:57,957 INFO L263 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 12 conjunts are in the unsatisfiable core [2022-03-20 04:53:57,959 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-20 04:53:58,174 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 8 proven. 24 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2022-03-20 04:53:58,175 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-20 04:53:58,396 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 8 proven. 24 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2022-03-20 04:53:58,396 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 04:53:58,396 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1981183651] [2022-03-20 04:53:58,396 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-03-20 04:53:58,397 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [241507861] [2022-03-20 04:53:58,397 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [241507861] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-20 04:53:58,397 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-03-20 04:53:58,397 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 16 [2022-03-20 04:53:58,397 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [746237641] [2022-03-20 04:53:58,397 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-03-20 04:53:58,397 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-03-20 04:53:58,398 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-20 04:53:58,398 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-03-20 04:53:58,398 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=184, Unknown=0, NotChecked=0, Total=240 [2022-03-20 04:53:58,398 INFO L87 Difference]: Start difference. First operand 60 states and 70 transitions. Second operand has 16 states, 16 states have (on average 2.75) internal successors, (44), 16 states have internal predecessors, (44), 10 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (11), 9 states have call predecessors, (11), 9 states have call successors, (11) [2022-03-20 04:53:58,769 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 04:53:58,769 INFO L93 Difference]: Finished difference Result 74 states and 87 transitions. [2022-03-20 04:53:58,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-03-20 04:53:58,770 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.75) internal successors, (44), 16 states have internal predecessors, (44), 10 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (11), 9 states have call predecessors, (11), 9 states have call successors, (11) Word has length 57 [2022-03-20 04:53:58,770 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 04:53:58,770 INFO L225 Difference]: With dead ends: 74 [2022-03-20 04:53:58,771 INFO L226 Difference]: Without dead ends: 74 [2022-03-20 04:53:58,771 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 123 GetRequests, 99 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 93 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=149, Invalid=501, Unknown=0, NotChecked=0, Total=650 [2022-03-20 04:53:58,772 INFO L913 BasicCegarLoop]: 35 mSDtfsCounter, 12 mSDsluCounter, 198 mSDsCounter, 0 mSdLazyCounter, 222 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 233 SdHoareTripleChecker+Invalid, 251 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 222 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-20 04:53:58,772 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [12 Valid, 233 Invalid, 251 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 222 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-03-20 04:53:58,772 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2022-03-20 04:53:58,776 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 61. [2022-03-20 04:53:58,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61 states, 44 states have (on average 1.1136363636363635) internal successors, (49), 44 states have internal predecessors, (49), 12 states have call successors, (12), 6 states have call predecessors, (12), 4 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2022-03-20 04:53:58,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 71 transitions. [2022-03-20 04:53:58,777 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 71 transitions. Word has length 57 [2022-03-20 04:53:58,777 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 04:53:58,777 INFO L478 AbstractCegarLoop]: Abstraction has 61 states and 71 transitions. [2022-03-20 04:53:58,777 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 2.75) internal successors, (44), 16 states have internal predecessors, (44), 10 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (11), 9 states have call predecessors, (11), 9 states have call successors, (11) [2022-03-20 04:53:58,778 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 71 transitions. [2022-03-20 04:53:58,779 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-03-20 04:53:58,779 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 04:53:58,779 INFO L499 BasicCegarLoop]: trace histogram [6, 5, 5, 5, 5, 5, 4, 4, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 04:53:58,807 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-03-20 04:53:58,979 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-20 04:53:58,980 INFO L403 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 04:53:58,980 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 04:53:58,980 INFO L85 PathProgramCache]: Analyzing trace with hash 1468958503, now seen corresponding path program 3 times [2022-03-20 04:53:58,980 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 04:53:58,980 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1557909504] [2022-03-20 04:53:58,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 04:53:58,980 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 04:53:58,989 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-03-20 04:53:58,990 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1701228906] [2022-03-20 04:53:58,990 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-20 04:53:58,990 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-20 04:53:58,990 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-20 04:53:58,992 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-20 04:53:59,001 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-03-20 04:53:59,059 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-03-20 04:53:59,059 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-20 04:53:59,060 INFO L263 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 31 conjunts are in the unsatisfiable core [2022-03-20 04:53:59,063 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-20 04:53:59,936 WARN L907 QuantifierPusher]: no eliminatee completely removed, nonetheless the elimination was considered successful [2022-03-20 04:53:59,942 WARN L907 QuantifierPusher]: no eliminatee completely removed, nonetheless the elimination was considered successful [2022-03-20 04:53:59,944 WARN L907 QuantifierPusher]: no eliminatee completely removed, nonetheless the elimination was considered successful [2022-03-20 04:54:04,731 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 39 proven. 1 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2022-03-20 04:54:04,732 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-20 04:54:05,044 WARN L907 QuantifierPusher]: no eliminatee completely removed, nonetheless the elimination was considered successful [2022-03-20 04:54:06,039 WARN L907 QuantifierPusher]: no eliminatee completely removed, nonetheless the elimination was considered successful [2022-03-20 04:54:24,622 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 39 proven. 1 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2022-03-20 04:54:24,622 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 04:54:24,622 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1557909504] [2022-03-20 04:54:24,622 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-03-20 04:54:24,622 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1701228906] [2022-03-20 04:54:24,622 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1701228906] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-20 04:54:24,622 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-03-20 04:54:24,622 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 13] total 25 [2022-03-20 04:54:24,623 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1972219917] [2022-03-20 04:54:24,623 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-03-20 04:54:24,623 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-03-20 04:54:24,623 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-20 04:54:24,624 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-03-20 04:54:24,624 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=98, Invalid=496, Unknown=6, NotChecked=0, Total=600 [2022-03-20 04:54:24,624 INFO L87 Difference]: Start difference. First operand 61 states and 71 transitions. Second operand has 25 states, 21 states have (on average 2.1904761904761907) internal successors, (46), 22 states have internal predecessors, (46), 7 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (9), 5 states have call predecessors, (9), 5 states have call successors, (9) [2022-03-20 04:54:34,628 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 04:54:34,628 INFO L93 Difference]: Finished difference Result 65 states and 77 transitions. [2022-03-20 04:54:34,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-03-20 04:54:34,628 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 21 states have (on average 2.1904761904761907) internal successors, (46), 22 states have internal predecessors, (46), 7 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (9), 5 states have call predecessors, (9), 5 states have call successors, (9) Word has length 66 [2022-03-20 04:54:34,629 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 04:54:34,629 INFO L225 Difference]: With dead ends: 65 [2022-03-20 04:54:34,629 INFO L226 Difference]: Without dead ends: 0 [2022-03-20 04:54:34,630 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 144 GetRequests, 108 SyntacticMatches, 1 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 276 ImplicationChecksByTransitivity, 26.6s TimeCoverageRelationStatistics Valid=242, Invalid=1084, Unknown=6, NotChecked=0, Total=1332 [2022-03-20 04:54:34,630 INFO L913 BasicCegarLoop]: 16 mSDtfsCounter, 35 mSDsluCounter, 213 mSDsCounter, 0 mSdLazyCounter, 256 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 229 SdHoareTripleChecker+Invalid, 321 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 256 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 48 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-03-20 04:54:34,631 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [37 Valid, 229 Invalid, 321 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 256 Invalid, 0 Unknown, 48 Unchecked, 2.2s Time] [2022-03-20 04:54:34,631 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-03-20 04:54:34,631 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-03-20 04:54:34,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-20 04:54:34,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-03-20 04:54:34,632 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 66 [2022-03-20 04:54:34,632 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 04:54:34,632 INFO L478 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-03-20 04:54:34,632 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 21 states have (on average 2.1904761904761907) internal successors, (46), 22 states have internal predecessors, (46), 7 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (9), 5 states have call predecessors, (9), 5 states have call successors, (9) [2022-03-20 04:54:34,632 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-03-20 04:54:34,632 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-03-20 04:54:34,635 INFO L788 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-03-20 04:54:34,661 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-03-20 04:54:34,853 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-20 04:54:34,856 INFO L719 BasicCegarLoop]: Path program histogram: [3, 1, 1, 1, 1, 1] [2022-03-20 04:54:34,857 INFO L180 ceAbstractionStarter]: Computing trace abstraction results [2022-03-20 04:54:34,859 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.03 04:54:34 BasicIcfg [2022-03-20 04:54:34,860 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-03-20 04:54:34,860 INFO L158 Benchmark]: Toolchain (without parser) took 42560.62ms. Allocated memory was 180.4MB in the beginning and 269.5MB in the end (delta: 89.1MB). Free memory was 128.9MB in the beginning and 205.4MB in the end (delta: -76.5MB). Peak memory consumption was 12.5MB. Max. memory is 8.0GB. [2022-03-20 04:54:34,860 INFO L158 Benchmark]: CDTParser took 0.13ms. Allocated memory is still 180.4MB. Free memory is still 145.3MB. There was no memory consumed. Max. memory is 8.0GB. [2022-03-20 04:54:34,860 INFO L158 Benchmark]: CACSL2BoogieTranslator took 273.43ms. Allocated memory is still 180.4MB. Free memory was 128.8MB in the beginning and 155.9MB in the end (delta: -27.1MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. [2022-03-20 04:54:34,861 INFO L158 Benchmark]: Boogie Preprocessor took 22.05ms. Allocated memory is still 180.4MB. Free memory was 155.9MB in the beginning and 154.5MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-03-20 04:54:34,861 INFO L158 Benchmark]: RCFGBuilder took 243.58ms. Allocated memory is still 180.4MB. Free memory was 154.1MB in the beginning and 143.6MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. [2022-03-20 04:54:34,861 INFO L158 Benchmark]: IcfgTransformer took 47.23ms. Allocated memory is still 180.4MB. Free memory was 143.6MB in the beginning and 142.6MB in the end (delta: 1.0MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-03-20 04:54:34,861 INFO L158 Benchmark]: TraceAbstraction took 41969.75ms. Allocated memory was 180.4MB in the beginning and 269.5MB in the end (delta: 89.1MB). Free memory was 141.9MB in the beginning and 205.4MB in the end (delta: -63.5MB). Peak memory consumption was 26.2MB. Max. memory is 8.0GB. [2022-03-20 04:54:34,863 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13ms. Allocated memory is still 180.4MB. Free memory is still 145.3MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 273.43ms. Allocated memory is still 180.4MB. Free memory was 128.8MB in the beginning and 155.9MB in the end (delta: -27.1MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. * Boogie Preprocessor took 22.05ms. Allocated memory is still 180.4MB. Free memory was 155.9MB in the beginning and 154.5MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 243.58ms. Allocated memory is still 180.4MB. Free memory was 154.1MB in the beginning and 143.6MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. * IcfgTransformer took 47.23ms. Allocated memory is still 180.4MB. Free memory was 143.6MB in the beginning and 142.6MB in the end (delta: 1.0MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * TraceAbstraction took 41969.75ms. Allocated memory was 180.4MB in the beginning and 269.5MB in the end (delta: 89.1MB). Free memory was 141.9MB in the beginning and 205.4MB in the end (delta: -63.5MB). Peak memory consumption was 26.2MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 16]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 32 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 41.9s, OverallIterations: 8, TraceHistogramMax: 6, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 11.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 176 SdHoareTripleChecker+Valid, 2.9s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 167 mSDsluCounter, 1262 SdHoareTripleChecker+Invalid, 2.7s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 90 IncrementalHoareTripleChecker+Unchecked, 1059 mSDsCounter, 104 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 995 IncrementalHoareTripleChecker+Invalid, 1189 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 104 mSolverCounterUnsat, 203 mSDtfsCounter, 995 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 617 GetRequests, 474 SyntacticMatches, 8 SemanticMatches, 135 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 671 ImplicationChecksByTransitivity, 28.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=61occurred in iteration=7, InterpolantAutomatonStates: 104, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 8 MinimizatonAttempts, 25 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 28.1s InterpolantComputationTime, 329 NumberOfCodeBlocks, 302 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 567 ConstructedInterpolants, 6 QuantifiedInterpolants, 3338 SizeOfPredicates, 38 NumberOfNonLiveVariables, 844 ConjunctsInSsa, 131 ConjunctsInUnsatCore, 13 InterpolantComputations, 2 PerfectInterpolantSequences, 409/494 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2022-03-20 04:54:35,081 WARN L435 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forcibly destroying the process [2022-03-20 04:54:35,150 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 137 Received shutdown request...