/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-NoLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/weaver/parallel-misc-2.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-bc79526 [2022-01-18 01:26:33,094 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-18 01:26:33,096 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-18 01:26:33,158 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-18 01:26:33,159 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-18 01:26:33,159 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-18 01:26:33,161 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-18 01:26:33,162 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-18 01:26:33,163 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-18 01:26:33,164 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-18 01:26:33,164 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-18 01:26:33,165 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-18 01:26:33,166 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-18 01:26:33,166 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-18 01:26:33,167 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-18 01:26:33,168 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-18 01:26:33,169 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-18 01:26:33,169 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-18 01:26:33,170 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-18 01:26:33,172 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-18 01:26:33,173 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-18 01:26:33,174 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-18 01:26:33,174 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-18 01:26:33,175 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-18 01:26:33,177 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-01-18 01:26:33,179 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-01-18 01:26:33,180 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-01-18 01:26:33,181 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-01-18 01:26:33,181 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-01-18 01:26:33,182 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-01-18 01:26:33,182 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-01-18 01:26:33,183 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-01-18 01:26:33,183 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-01-18 01:26:33,183 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-18 01:26:33,184 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-18 01:26:33,184 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-18 01:26:33,185 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-NoLbe.epf [2022-01-18 01:26:33,205 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-18 01:26:33,205 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-18 01:26:33,206 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-18 01:26:33,206 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-18 01:26:33,206 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-01-18 01:26:33,206 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-01-18 01:26:33,207 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-18 01:26:33,207 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-18 01:26:33,207 INFO L138 SettingsManager]: * Use SBE=true [2022-01-18 01:26:33,208 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-18 01:26:33,208 INFO L138 SettingsManager]: * sizeof long=4 [2022-01-18 01:26:33,208 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-18 01:26:33,208 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-01-18 01:26:33,208 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-18 01:26:33,208 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-18 01:26:33,209 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-18 01:26:33,209 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-18 01:26:33,209 INFO L138 SettingsManager]: * sizeof long double=12 [2022-01-18 01:26:33,209 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-18 01:26:33,209 INFO L138 SettingsManager]: * Use constant arrays=true [2022-01-18 01:26:33,209 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-18 01:26:33,210 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-18 01:26:33,210 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-18 01:26:33,210 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-01-18 01:26:33,210 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-18 01:26:33,210 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-18 01:26:33,210 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-18 01:26:33,211 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-18 01:26:33,211 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-18 01:26:33,211 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-18 01:26:33,211 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-18 01:26:33,211 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-18 01:26:33,211 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-18 01:26:33,211 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-01-18 01:26:33,396 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-18 01:26:33,417 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-18 01:26:33,419 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-18 01:26:33,420 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-18 01:26:33,421 INFO L275 PluginConnector]: CDTParser initialized [2022-01-18 01:26:33,422 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/parallel-misc-2.wvr.c [2022-01-18 01:26:33,476 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/09aa46759/a67d95cdaa234184916dedacc2389800/FLAGb3745464d [2022-01-18 01:26:33,860 INFO L306 CDTParser]: Found 1 translation units. [2022-01-18 01:26:33,860 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/parallel-misc-2.wvr.c [2022-01-18 01:26:33,868 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/09aa46759/a67d95cdaa234184916dedacc2389800/FLAGb3745464d [2022-01-18 01:26:33,880 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/09aa46759/a67d95cdaa234184916dedacc2389800 [2022-01-18 01:26:33,883 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-18 01:26:33,884 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-01-18 01:26:33,886 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-18 01:26:33,887 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-18 01:26:33,889 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-18 01:26:33,890 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.01 01:26:33" (1/1) ... [2022-01-18 01:26:33,890 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2d6cd94a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 01:26:33, skipping insertion in model container [2022-01-18 01:26:33,891 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.01 01:26:33" (1/1) ... [2022-01-18 01:26:33,896 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-18 01:26:33,910 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-18 01:26:34,115 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/parallel-misc-2.wvr.c[2554,2567] [2022-01-18 01:26:34,118 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-18 01:26:34,125 INFO L203 MainTranslator]: Completed pre-run [2022-01-18 01:26:34,155 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/parallel-misc-2.wvr.c[2554,2567] [2022-01-18 01:26:34,156 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-18 01:26:34,167 INFO L208 MainTranslator]: Completed translation [2022-01-18 01:26:34,168 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 01:26:34 WrapperNode [2022-01-18 01:26:34,168 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-18 01:26:34,169 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-18 01:26:34,169 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-18 01:26:34,169 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-18 01:26:34,174 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 01:26:34" (1/1) ... [2022-01-18 01:26:34,187 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 01:26:34" (1/1) ... [2022-01-18 01:26:34,208 INFO L137 Inliner]: procedures = 21, calls = 28, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 66 [2022-01-18 01:26:34,208 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-18 01:26:34,209 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-18 01:26:34,209 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-18 01:26:34,209 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-18 01:26:34,215 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 01:26:34" (1/1) ... [2022-01-18 01:26:34,215 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 01:26:34" (1/1) ... [2022-01-18 01:26:34,219 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 01:26:34" (1/1) ... [2022-01-18 01:26:34,219 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 01:26:34" (1/1) ... [2022-01-18 01:26:34,232 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 01:26:34" (1/1) ... [2022-01-18 01:26:34,235 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 01:26:34" (1/1) ... [2022-01-18 01:26:34,236 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 01:26:34" (1/1) ... [2022-01-18 01:26:34,237 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-18 01:26:34,238 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-18 01:26:34,238 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-18 01:26:34,238 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-18 01:26:34,243 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 01:26:34" (1/1) ... [2022-01-18 01:26:34,248 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-18 01:26:34,262 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 01:26:34,276 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-01-18 01:26:34,307 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-01-18 01:26:34,317 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-18 01:26:34,317 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-01-18 01:26:34,317 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-01-18 01:26:34,318 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-01-18 01:26:34,318 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-01-18 01:26:34,318 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-01-18 01:26:34,318 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-01-18 01:26:34,319 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-01-18 01:26:34,319 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-01-18 01:26:34,319 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-01-18 01:26:34,319 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-18 01:26:34,319 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-18 01:26:34,319 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-01-18 01:26:34,319 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-01-18 01:26:34,320 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-01-18 01:26:34,403 INFO L234 CfgBuilder]: Building ICFG [2022-01-18 01:26:34,404 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-18 01:26:34,572 INFO L275 CfgBuilder]: Performing block encoding [2022-01-18 01:26:34,589 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-18 01:26:34,590 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2022-01-18 01:26:34,591 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.01 01:26:34 BoogieIcfgContainer [2022-01-18 01:26:34,592 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-18 01:26:34,593 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-18 01:26:34,593 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-18 01:26:34,599 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-18 01:26:34,599 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.01 01:26:33" (1/3) ... [2022-01-18 01:26:34,599 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@defda45 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.01 01:26:34, skipping insertion in model container [2022-01-18 01:26:34,599 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 01:26:34" (2/3) ... [2022-01-18 01:26:34,600 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@defda45 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.01 01:26:34, skipping insertion in model container [2022-01-18 01:26:34,600 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.01 01:26:34" (3/3) ... [2022-01-18 01:26:34,601 INFO L111 eAbstractionObserver]: Analyzing ICFG parallel-misc-2.wvr.c [2022-01-18 01:26:34,604 WARN L149 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-01-18 01:26:34,604 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-18 01:26:34,604 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-18 01:26:34,604 INFO L513 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-01-18 01:26:34,668 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 01:26:34,668 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 01:26:34,669 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 01:26:34,669 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 01:26:34,670 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 01:26:34,670 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 01:26:34,670 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 01:26:34,671 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 01:26:34,671 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 01:26:34,671 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 01:26:34,672 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 01:26:34,672 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 01:26:34,672 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 01:26:34,673 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 01:26:34,674 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 01:26:34,675 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 01:26:34,675 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 01:26:34,675 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 01:26:34,679 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 01:26:34,680 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 01:26:34,680 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 01:26:34,680 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 01:26:34,680 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 01:26:34,681 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 01:26:34,683 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 01:26:34,683 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 01:26:34,683 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 01:26:34,683 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 01:26:34,683 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 01:26:34,684 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 01:26:34,684 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 01:26:34,685 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 01:26:34,688 INFO L148 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-01-18 01:26:34,717 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-18 01:26:34,722 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2022-01-18 01:26:34,722 INFO L340 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2022-01-18 01:26:34,733 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 103 places, 104 transitions, 224 flow [2022-01-18 01:26:34,818 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 636 states, 635 states have (on average 2.8) internal successors, (1778), 635 states have internal predecessors, (1778), 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) [2022-01-18 01:26:34,822 INFO L276 IsEmpty]: Start isEmpty. Operand has 636 states, 635 states have (on average 2.8) internal successors, (1778), 635 states have internal predecessors, (1778), 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) [2022-01-18 01:26:34,846 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-01-18 01:26:34,846 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 01:26:34,847 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 01:26:34,848 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 01:26:34,854 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 01:26:34,854 INFO L85 PathProgramCache]: Analyzing trace with hash 91702260, now seen corresponding path program 1 times [2022-01-18 01:26:34,861 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 01:26:34,862 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1161022848] [2022-01-18 01:26:34,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 01:26:34,863 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 01:26:35,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 01:26:35,106 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 01:26:35,106 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 01:26:35,106 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1161022848] [2022-01-18 01:26:35,107 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1161022848] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 01:26:35,107 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 01:26:35,107 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-18 01:26:35,109 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [295788954] [2022-01-18 01:26:35,109 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 01:26:35,113 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-01-18 01:26:35,113 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 01:26:35,139 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-01-18 01:26:35,141 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-01-18 01:26:35,144 INFO L87 Difference]: Start difference. First operand has 636 states, 635 states have (on average 2.8) internal successors, (1778), 635 states have internal predecessors, (1778), 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) Second operand has 2 states, 2 states have (on average 34.5) internal successors, (69), 2 states have internal predecessors, (69), 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) [2022-01-18 01:26:35,195 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 01:26:35,196 INFO L93 Difference]: Finished difference Result 636 states and 1679 transitions. [2022-01-18 01:26:35,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-01-18 01:26:35,198 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 34.5) internal successors, (69), 2 states have internal predecessors, (69), 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) Word has length 69 [2022-01-18 01:26:35,198 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 01:26:35,219 INFO L225 Difference]: With dead ends: 636 [2022-01-18 01:26:35,219 INFO L226 Difference]: Without dead ends: 634 [2022-01-18 01:26:35,221 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-01-18 01:26:35,225 INFO L933 BasicCegarLoop]: 83 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 83 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-18 01:26:35,226 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 83 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-18 01:26:35,240 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 634 states. [2022-01-18 01:26:35,302 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 634 to 634. [2022-01-18 01:26:35,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 634 states, 633 states have (on average 2.6492890995260665) internal successors, (1677), 633 states have internal predecessors, (1677), 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) [2022-01-18 01:26:35,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 634 states to 634 states and 1677 transitions. [2022-01-18 01:26:35,309 INFO L78 Accepts]: Start accepts. Automaton has 634 states and 1677 transitions. Word has length 69 [2022-01-18 01:26:35,309 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 01:26:35,309 INFO L470 AbstractCegarLoop]: Abstraction has 634 states and 1677 transitions. [2022-01-18 01:26:35,309 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 34.5) internal successors, (69), 2 states have internal predecessors, (69), 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) [2022-01-18 01:26:35,310 INFO L276 IsEmpty]: Start isEmpty. Operand 634 states and 1677 transitions. [2022-01-18 01:26:35,312 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-01-18 01:26:35,313 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 01:26:35,313 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 01:26:35,313 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-18 01:26:35,313 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 01:26:35,314 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 01:26:35,314 INFO L85 PathProgramCache]: Analyzing trace with hash -638556778, now seen corresponding path program 1 times [2022-01-18 01:26:35,314 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 01:26:35,315 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [197869341] [2022-01-18 01:26:35,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 01:26:35,315 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 01:26:35,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 01:26:35,562 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 01:26:35,563 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 01:26:35,563 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [197869341] [2022-01-18 01:26:35,563 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [197869341] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 01:26:35,563 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 01:26:35,564 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-18 01:26:35,564 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [730404879] [2022-01-18 01:26:35,564 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 01:26:35,565 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-18 01:26:35,565 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 01:26:35,566 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-18 01:26:35,566 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-01-18 01:26:35,566 INFO L87 Difference]: Start difference. First operand 634 states and 1677 transitions. Second operand has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 7 states have internal predecessors, (69), 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) [2022-01-18 01:26:35,675 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 01:26:35,675 INFO L93 Difference]: Finished difference Result 899 states and 2413 transitions. [2022-01-18 01:26:35,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-18 01:26:35,676 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 7 states have internal predecessors, (69), 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) Word has length 69 [2022-01-18 01:26:35,676 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 01:26:35,681 INFO L225 Difference]: With dead ends: 899 [2022-01-18 01:26:35,681 INFO L226 Difference]: Without dead ends: 848 [2022-01-18 01:26:35,681 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2022-01-18 01:26:35,683 INFO L933 BasicCegarLoop]: 75 mSDtfsCounter, 76 mSDsluCounter, 266 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 76 SdHoareTripleChecker+Valid, 324 SdHoareTripleChecker+Invalid, 63 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 01:26:35,683 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [76 Valid, 324 Invalid, 63 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 01:26:35,686 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 848 states. [2022-01-18 01:26:35,706 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 848 to 689. [2022-01-18 01:26:35,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 689 states, 688 states have (on average 2.627906976744186) internal successors, (1808), 688 states have internal predecessors, (1808), 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) [2022-01-18 01:26:35,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 689 states to 689 states and 1808 transitions. [2022-01-18 01:26:35,711 INFO L78 Accepts]: Start accepts. Automaton has 689 states and 1808 transitions. Word has length 69 [2022-01-18 01:26:35,711 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 01:26:35,712 INFO L470 AbstractCegarLoop]: Abstraction has 689 states and 1808 transitions. [2022-01-18 01:26:35,712 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 7 states have internal predecessors, (69), 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) [2022-01-18 01:26:35,712 INFO L276 IsEmpty]: Start isEmpty. Operand 689 states and 1808 transitions. [2022-01-18 01:26:35,715 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2022-01-18 01:26:35,715 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 01:26:35,715 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 01:26:35,715 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-18 01:26:35,715 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 01:26:35,716 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 01:26:35,716 INFO L85 PathProgramCache]: Analyzing trace with hash -849231512, now seen corresponding path program 1 times [2022-01-18 01:26:35,716 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 01:26:35,717 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1153418265] [2022-01-18 01:26:35,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 01:26:35,717 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 01:26:35,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 01:26:35,895 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 01:26:35,896 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 01:26:35,896 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1153418265] [2022-01-18 01:26:35,896 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1153418265] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 01:26:35,896 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 01:26:35,896 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-18 01:26:35,896 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2065443916] [2022-01-18 01:26:35,897 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 01:26:35,897 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-18 01:26:35,897 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 01:26:35,898 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-18 01:26:35,898 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-01-18 01:26:35,898 INFO L87 Difference]: Start difference. First operand 689 states and 1808 transitions. Second operand has 6 states, 6 states have (on average 12.666666666666666) internal successors, (76), 6 states have internal predecessors, (76), 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) [2022-01-18 01:26:36,071 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 01:26:36,072 INFO L93 Difference]: Finished difference Result 1079 states and 2914 transitions. [2022-01-18 01:26:36,072 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-18 01:26:36,073 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 12.666666666666666) internal successors, (76), 6 states have internal predecessors, (76), 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) Word has length 76 [2022-01-18 01:26:36,073 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 01:26:36,079 INFO L225 Difference]: With dead ends: 1079 [2022-01-18 01:26:36,079 INFO L226 Difference]: Without dead ends: 1046 [2022-01-18 01:26:36,079 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-18 01:26:36,081 INFO L933 BasicCegarLoop]: 92 mSDtfsCounter, 168 mSDsluCounter, 205 mSDsCounter, 0 mSdLazyCounter, 93 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 168 SdHoareTripleChecker+Valid, 276 SdHoareTripleChecker+Invalid, 102 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 93 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 01:26:36,081 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [168 Valid, 276 Invalid, 102 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 93 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 01:26:36,084 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1046 states. [2022-01-18 01:26:36,101 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1046 to 656. [2022-01-18 01:26:36,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 656 states, 655 states have (on average 2.645801526717557) internal successors, (1733), 655 states have internal predecessors, (1733), 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) [2022-01-18 01:26:36,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 656 states to 656 states and 1733 transitions. [2022-01-18 01:26:36,105 INFO L78 Accepts]: Start accepts. Automaton has 656 states and 1733 transitions. Word has length 76 [2022-01-18 01:26:36,106 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 01:26:36,106 INFO L470 AbstractCegarLoop]: Abstraction has 656 states and 1733 transitions. [2022-01-18 01:26:36,106 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.666666666666666) internal successors, (76), 6 states have internal predecessors, (76), 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) [2022-01-18 01:26:36,106 INFO L276 IsEmpty]: Start isEmpty. Operand 656 states and 1733 transitions. [2022-01-18 01:26:36,108 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2022-01-18 01:26:36,108 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 01:26:36,108 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 01:26:36,109 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-01-18 01:26:36,109 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 01:26:36,110 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 01:26:36,110 INFO L85 PathProgramCache]: Analyzing trace with hash -1336332093, now seen corresponding path program 1 times [2022-01-18 01:26:36,110 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 01:26:36,110 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2083748966] [2022-01-18 01:26:36,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 01:26:36,110 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 01:26:36,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 01:26:36,253 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 01:26:36,254 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 01:26:36,254 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2083748966] [2022-01-18 01:26:36,254 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2083748966] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 01:26:36,254 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 01:26:36,254 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-18 01:26:36,255 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [969144407] [2022-01-18 01:26:36,256 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 01:26:36,257 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-18 01:26:36,257 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 01:26:36,258 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-18 01:26:36,258 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-01-18 01:26:36,258 INFO L87 Difference]: Start difference. First operand 656 states and 1733 transitions. Second operand has 6 states, 6 states have (on average 12.666666666666666) internal successors, (76), 6 states have internal predecessors, (76), 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) [2022-01-18 01:26:36,406 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 01:26:36,406 INFO L93 Difference]: Finished difference Result 1243 states and 3316 transitions. [2022-01-18 01:26:36,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-18 01:26:36,407 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 12.666666666666666) internal successors, (76), 6 states have internal predecessors, (76), 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) Word has length 76 [2022-01-18 01:26:36,407 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 01:26:36,413 INFO L225 Difference]: With dead ends: 1243 [2022-01-18 01:26:36,413 INFO L226 Difference]: Without dead ends: 1243 [2022-01-18 01:26:36,414 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-18 01:26:36,415 INFO L933 BasicCegarLoop]: 83 mSDtfsCounter, 219 mSDsluCounter, 184 mSDsCounter, 0 mSdLazyCounter, 78 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 219 SdHoareTripleChecker+Valid, 249 SdHoareTripleChecker+Invalid, 86 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 78 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 01:26:36,416 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [219 Valid, 249 Invalid, 86 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 78 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 01:26:36,420 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1243 states. [2022-01-18 01:26:36,436 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1243 to 703. [2022-01-18 01:26:36,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 703 states, 702 states have (on average 2.6552706552706553) internal successors, (1864), 702 states have internal predecessors, (1864), 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) [2022-01-18 01:26:36,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 703 states to 703 states and 1864 transitions. [2022-01-18 01:26:36,442 INFO L78 Accepts]: Start accepts. Automaton has 703 states and 1864 transitions. Word has length 76 [2022-01-18 01:26:36,442 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 01:26:36,443 INFO L470 AbstractCegarLoop]: Abstraction has 703 states and 1864 transitions. [2022-01-18 01:26:36,443 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.666666666666666) internal successors, (76), 6 states have internal predecessors, (76), 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) [2022-01-18 01:26:36,443 INFO L276 IsEmpty]: Start isEmpty. Operand 703 states and 1864 transitions. [2022-01-18 01:26:36,445 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2022-01-18 01:26:36,445 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 01:26:36,446 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 01:26:36,446 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-01-18 01:26:36,449 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 01:26:36,456 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 01:26:36,456 INFO L85 PathProgramCache]: Analyzing trace with hash -83304769, now seen corresponding path program 2 times [2022-01-18 01:26:36,456 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 01:26:36,457 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1735722207] [2022-01-18 01:26:36,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 01:26:36,457 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 01:26:36,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 01:26:36,589 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 01:26:36,590 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 01:26:36,590 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1735722207] [2022-01-18 01:26:36,590 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1735722207] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 01:26:36,590 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 01:26:36,590 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-18 01:26:36,590 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [662554312] [2022-01-18 01:26:36,591 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 01:26:36,591 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-18 01:26:36,591 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 01:26:36,591 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-18 01:26:36,592 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-01-18 01:26:36,592 INFO L87 Difference]: Start difference. First operand 703 states and 1864 transitions. Second operand has 6 states, 6 states have (on average 12.666666666666666) internal successors, (76), 6 states have internal predecessors, (76), 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) [2022-01-18 01:26:36,706 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 01:26:36,706 INFO L93 Difference]: Finished difference Result 1021 states and 2763 transitions. [2022-01-18 01:26:36,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-18 01:26:36,706 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 12.666666666666666) internal successors, (76), 6 states have internal predecessors, (76), 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) Word has length 76 [2022-01-18 01:26:36,707 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 01:26:36,711 INFO L225 Difference]: With dead ends: 1021 [2022-01-18 01:26:36,712 INFO L226 Difference]: Without dead ends: 1009 [2022-01-18 01:26:36,712 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-18 01:26:36,713 INFO L933 BasicCegarLoop]: 91 mSDtfsCounter, 189 mSDsluCounter, 188 mSDsCounter, 0 mSdLazyCounter, 82 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 189 SdHoareTripleChecker+Valid, 263 SdHoareTripleChecker+Invalid, 90 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 82 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 01:26:36,713 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [189 Valid, 263 Invalid, 90 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 82 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 01:26:36,716 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1009 states. [2022-01-18 01:26:36,731 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1009 to 691. [2022-01-18 01:26:36,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 691 states, 690 states have (on average 2.6536231884057973) internal successors, (1831), 690 states have internal predecessors, (1831), 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) [2022-01-18 01:26:36,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 691 states to 691 states and 1831 transitions. [2022-01-18 01:26:36,736 INFO L78 Accepts]: Start accepts. Automaton has 691 states and 1831 transitions. Word has length 76 [2022-01-18 01:26:36,736 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 01:26:36,736 INFO L470 AbstractCegarLoop]: Abstraction has 691 states and 1831 transitions. [2022-01-18 01:26:36,736 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.666666666666666) internal successors, (76), 6 states have internal predecessors, (76), 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) [2022-01-18 01:26:36,736 INFO L276 IsEmpty]: Start isEmpty. Operand 691 states and 1831 transitions. [2022-01-18 01:26:36,738 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2022-01-18 01:26:36,738 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 01:26:36,738 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 01:26:36,738 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-01-18 01:26:36,739 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 01:26:36,739 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 01:26:36,739 INFO L85 PathProgramCache]: Analyzing trace with hash -1050345588, now seen corresponding path program 2 times [2022-01-18 01:26:36,739 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 01:26:36,740 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2079386035] [2022-01-18 01:26:36,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 01:26:36,740 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 01:26:36,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 01:26:36,841 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 01:26:36,841 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 01:26:36,841 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2079386035] [2022-01-18 01:26:36,841 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2079386035] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 01:26:36,842 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 01:26:36,842 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-18 01:26:36,842 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [341011672] [2022-01-18 01:26:36,842 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 01:26:36,842 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-18 01:26:36,842 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 01:26:36,843 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-18 01:26:36,843 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-01-18 01:26:36,843 INFO L87 Difference]: Start difference. First operand 691 states and 1831 transitions. Second operand has 6 states, 6 states have (on average 12.666666666666666) internal successors, (76), 6 states have internal predecessors, (76), 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) [2022-01-18 01:26:36,960 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 01:26:36,960 INFO L93 Difference]: Finished difference Result 1035 states and 2804 transitions. [2022-01-18 01:26:36,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-18 01:26:36,961 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 12.666666666666666) internal successors, (76), 6 states have internal predecessors, (76), 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) Word has length 76 [2022-01-18 01:26:36,961 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 01:26:36,966 INFO L225 Difference]: With dead ends: 1035 [2022-01-18 01:26:36,966 INFO L226 Difference]: Without dead ends: 1035 [2022-01-18 01:26:36,967 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-18 01:26:36,968 INFO L933 BasicCegarLoop]: 82 mSDtfsCounter, 108 mSDsluCounter, 229 mSDsCounter, 0 mSdLazyCounter, 80 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 108 SdHoareTripleChecker+Valid, 295 SdHoareTripleChecker+Invalid, 86 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 80 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 01:26:36,968 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [108 Valid, 295 Invalid, 86 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 80 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 01:26:36,970 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1035 states. [2022-01-18 01:26:36,986 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1035 to 735. [2022-01-18 01:26:36,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 735 states, 734 states have (on average 2.664850136239782) internal successors, (1956), 734 states have internal predecessors, (1956), 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) [2022-01-18 01:26:36,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 735 states to 735 states and 1956 transitions. [2022-01-18 01:26:36,990 INFO L78 Accepts]: Start accepts. Automaton has 735 states and 1956 transitions. Word has length 76 [2022-01-18 01:26:36,991 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 01:26:36,991 INFO L470 AbstractCegarLoop]: Abstraction has 735 states and 1956 transitions. [2022-01-18 01:26:36,991 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.666666666666666) internal successors, (76), 6 states have internal predecessors, (76), 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) [2022-01-18 01:26:36,992 INFO L276 IsEmpty]: Start isEmpty. Operand 735 states and 1956 transitions. [2022-01-18 01:26:36,993 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2022-01-18 01:26:36,993 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 01:26:36,994 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 01:26:36,994 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-01-18 01:26:36,994 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 01:26:36,994 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 01:26:36,995 INFO L85 PathProgramCache]: Analyzing trace with hash -352237017, now seen corresponding path program 1 times [2022-01-18 01:26:36,995 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 01:26:36,995 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1767403808] [2022-01-18 01:26:36,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 01:26:36,995 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 01:26:37,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 01:26:37,179 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 01:26:37,179 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 01:26:37,180 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1767403808] [2022-01-18 01:26:37,180 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1767403808] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 01:26:37,180 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [304904938] [2022-01-18 01:26:37,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 01:26:37,180 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 01:26:37,180 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 01:26:37,183 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 01:26:37,194 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-01-18 01:26:37,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 01:26:37,289 INFO L263 TraceCheckSpWp]: Trace formula consists of 177 conjuncts, 13 conjunts are in the unsatisfiable core [2022-01-18 01:26:37,295 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 01:26:37,770 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 01:26:37,770 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 01:26:38,250 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 01:26:38,251 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [304904938] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 01:26:38,251 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 01:26:38,251 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 18 [2022-01-18 01:26:38,251 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1879949800] [2022-01-18 01:26:38,251 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 01:26:38,253 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-01-18 01:26:38,253 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 01:26:38,254 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-01-18 01:26:38,254 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=237, Unknown=0, NotChecked=0, Total=306 [2022-01-18 01:26:38,254 INFO L87 Difference]: Start difference. First operand 735 states and 1956 transitions. Second operand has 18 states, 18 states have (on average 7.333333333333333) internal successors, (132), 18 states have internal predecessors, (132), 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) [2022-01-18 01:26:38,629 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 01:26:38,630 INFO L93 Difference]: Finished difference Result 1491 states and 4136 transitions. [2022-01-18 01:26:38,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-01-18 01:26:38,630 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 7.333333333333333) internal successors, (132), 18 states have internal predecessors, (132), 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) Word has length 83 [2022-01-18 01:26:38,631 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 01:26:38,637 INFO L225 Difference]: With dead ends: 1491 [2022-01-18 01:26:38,637 INFO L226 Difference]: Without dead ends: 1491 [2022-01-18 01:26:38,638 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 177 GetRequests, 154 SyntacticMatches, 2 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 99 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=133, Invalid=373, Unknown=0, NotChecked=0, Total=506 [2022-01-18 01:26:38,638 INFO L933 BasicCegarLoop]: 123 mSDtfsCounter, 463 mSDsluCounter, 793 mSDsCounter, 0 mSdLazyCounter, 222 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 463 SdHoareTripleChecker+Valid, 855 SdHoareTripleChecker+Invalid, 232 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 222 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-18 01:26:38,639 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [463 Valid, 855 Invalid, 232 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 222 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-18 01:26:38,646 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1491 states. [2022-01-18 01:26:38,666 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1491 to 1167. [2022-01-18 01:26:38,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1167 states, 1166 states have (on average 2.739279588336192) internal successors, (3194), 1166 states have internal predecessors, (3194), 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) [2022-01-18 01:26:38,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1167 states to 1167 states and 3194 transitions. [2022-01-18 01:26:38,673 INFO L78 Accepts]: Start accepts. Automaton has 1167 states and 3194 transitions. Word has length 83 [2022-01-18 01:26:38,673 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 01:26:38,673 INFO L470 AbstractCegarLoop]: Abstraction has 1167 states and 3194 transitions. [2022-01-18 01:26:38,673 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 7.333333333333333) internal successors, (132), 18 states have internal predecessors, (132), 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) [2022-01-18 01:26:38,673 INFO L276 IsEmpty]: Start isEmpty. Operand 1167 states and 3194 transitions. [2022-01-18 01:26:38,676 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2022-01-18 01:26:38,676 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 01:26:38,676 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 01:26:38,699 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-01-18 01:26:38,891 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 01:26:38,892 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 01:26:38,892 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 01:26:38,892 INFO L85 PathProgramCache]: Analyzing trace with hash 1047508780, now seen corresponding path program 2 times [2022-01-18 01:26:38,892 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 01:26:38,892 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1510709501] [2022-01-18 01:26:38,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 01:26:38,893 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 01:26:38,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 01:26:38,971 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 01:26:38,971 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 01:26:38,971 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1510709501] [2022-01-18 01:26:38,971 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1510709501] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 01:26:38,972 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 01:26:38,972 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-18 01:26:38,972 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [334715638] [2022-01-18 01:26:38,972 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 01:26:38,972 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-18 01:26:38,972 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 01:26:38,973 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-18 01:26:38,973 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-18 01:26:38,973 INFO L87 Difference]: Start difference. First operand 1167 states and 3194 transitions. Second operand has 4 states, 4 states have (on average 22.5) internal successors, (90), 4 states have internal predecessors, (90), 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) [2022-01-18 01:26:39,009 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 01:26:39,009 INFO L93 Difference]: Finished difference Result 1968 states and 5296 transitions. [2022-01-18 01:26:39,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-18 01:26:39,010 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 22.5) internal successors, (90), 4 states have internal predecessors, (90), 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) Word has length 90 [2022-01-18 01:26:39,010 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 01:26:39,019 INFO L225 Difference]: With dead ends: 1968 [2022-01-18 01:26:39,019 INFO L226 Difference]: Without dead ends: 1968 [2022-01-18 01:26:39,019 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-18 01:26:39,020 INFO L933 BasicCegarLoop]: 138 mSDtfsCounter, 76 mSDsluCounter, 191 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 76 SdHoareTripleChecker+Valid, 317 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-18 01:26:39,022 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [76 Valid, 317 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-18 01:26:39,028 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1968 states. [2022-01-18 01:26:39,061 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1968 to 1761. [2022-01-18 01:26:39,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1761 states, 1760 states have (on average 2.7397727272727272) internal successors, (4822), 1760 states have internal predecessors, (4822), 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) [2022-01-18 01:26:39,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1761 states to 1761 states and 4822 transitions. [2022-01-18 01:26:39,071 INFO L78 Accepts]: Start accepts. Automaton has 1761 states and 4822 transitions. Word has length 90 [2022-01-18 01:26:39,071 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 01:26:39,071 INFO L470 AbstractCegarLoop]: Abstraction has 1761 states and 4822 transitions. [2022-01-18 01:26:39,071 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.5) internal successors, (90), 4 states have internal predecessors, (90), 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) [2022-01-18 01:26:39,072 INFO L276 IsEmpty]: Start isEmpty. Operand 1761 states and 4822 transitions. [2022-01-18 01:26:39,077 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2022-01-18 01:26:39,078 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 01:26:39,078 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 01:26:39,078 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-01-18 01:26:39,078 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 01:26:39,078 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 01:26:39,078 INFO L85 PathProgramCache]: Analyzing trace with hash 850035468, now seen corresponding path program 1 times [2022-01-18 01:26:39,079 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 01:26:39,079 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [684353573] [2022-01-18 01:26:39,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 01:26:39,079 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 01:26:39,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 01:26:39,306 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-01-18 01:26:39,307 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 01:26:39,307 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [684353573] [2022-01-18 01:26:39,307 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [684353573] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 01:26:39,307 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [662350127] [2022-01-18 01:26:39,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 01:26:39,307 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 01:26:39,307 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 01:26:39,308 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 01:26:39,310 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-01-18 01:26:39,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 01:26:39,398 INFO L263 TraceCheckSpWp]: Trace formula consists of 189 conjuncts, 13 conjunts are in the unsatisfiable core [2022-01-18 01:26:39,401 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 01:26:39,799 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-01-18 01:26:39,799 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 01:26:40,382 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-01-18 01:26:40,382 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [662350127] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 01:26:40,382 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 01:26:40,382 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 18 [2022-01-18 01:26:40,383 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [931033337] [2022-01-18 01:26:40,383 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 01:26:40,383 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-01-18 01:26:40,383 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 01:26:40,383 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-01-18 01:26:40,384 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=238, Unknown=0, NotChecked=0, Total=306 [2022-01-18 01:26:40,384 INFO L87 Difference]: Start difference. First operand 1761 states and 4822 transitions. Second operand has 18 states, 18 states have (on average 7.111111111111111) internal successors, (128), 18 states have internal predecessors, (128), 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) [2022-01-18 01:26:41,057 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 01:26:41,057 INFO L93 Difference]: Finished difference Result 3833 states and 10750 transitions. [2022-01-18 01:26:41,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-01-18 01:26:41,058 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 7.111111111111111) internal successors, (128), 18 states have internal predecessors, (128), 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) Word has length 90 [2022-01-18 01:26:41,058 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 01:26:41,076 INFO L225 Difference]: With dead ends: 3833 [2022-01-18 01:26:41,076 INFO L226 Difference]: Without dead ends: 3833 [2022-01-18 01:26:41,077 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 196 GetRequests, 169 SyntacticMatches, 2 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 140 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=179, Invalid=523, Unknown=0, NotChecked=0, Total=702 [2022-01-18 01:26:41,077 INFO L933 BasicCegarLoop]: 124 mSDtfsCounter, 698 mSDsluCounter, 677 mSDsCounter, 0 mSdLazyCounter, 266 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 698 SdHoareTripleChecker+Valid, 734 SdHoareTripleChecker+Invalid, 286 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 266 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-18 01:26:41,077 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [698 Valid, 734 Invalid, 286 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 266 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-18 01:26:41,083 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3833 states. [2022-01-18 01:26:41,139 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3833 to 2777. [2022-01-18 01:26:41,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2777 states, 2776 states have (on average 2.805835734870317) internal successors, (7789), 2776 states have internal predecessors, (7789), 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) [2022-01-18 01:26:41,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2777 states to 2777 states and 7789 transitions. [2022-01-18 01:26:41,184 INFO L78 Accepts]: Start accepts. Automaton has 2777 states and 7789 transitions. Word has length 90 [2022-01-18 01:26:41,184 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 01:26:41,184 INFO L470 AbstractCegarLoop]: Abstraction has 2777 states and 7789 transitions. [2022-01-18 01:26:41,184 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 7.111111111111111) internal successors, (128), 18 states have internal predecessors, (128), 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) [2022-01-18 01:26:41,184 INFO L276 IsEmpty]: Start isEmpty. Operand 2777 states and 7789 transitions. [2022-01-18 01:26:41,190 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2022-01-18 01:26:41,190 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 01:26:41,190 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 01:26:41,214 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-01-18 01:26:41,391 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2022-01-18 01:26:41,391 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 01:26:41,392 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 01:26:41,392 INFO L85 PathProgramCache]: Analyzing trace with hash 395024114, now seen corresponding path program 2 times [2022-01-18 01:26:41,392 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 01:26:41,392 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [793749850] [2022-01-18 01:26:41,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 01:26:41,392 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 01:26:41,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 01:26:41,456 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-01-18 01:26:41,456 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 01:26:41,456 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [793749850] [2022-01-18 01:26:41,456 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [793749850] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 01:26:41,456 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 01:26:41,457 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-18 01:26:41,457 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2057536160] [2022-01-18 01:26:41,457 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 01:26:41,457 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-18 01:26:41,457 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 01:26:41,457 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-18 01:26:41,458 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-18 01:26:41,458 INFO L87 Difference]: Start difference. First operand 2777 states and 7789 transitions. Second operand has 4 states, 4 states have (on average 23.25) internal successors, (93), 4 states have internal predecessors, (93), 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) [2022-01-18 01:26:41,515 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 01:26:41,515 INFO L93 Difference]: Finished difference Result 5843 states and 16327 transitions. [2022-01-18 01:26:41,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-18 01:26:41,516 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 23.25) internal successors, (93), 4 states have internal predecessors, (93), 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) Word has length 97 [2022-01-18 01:26:41,516 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 01:26:41,540 INFO L225 Difference]: With dead ends: 5843 [2022-01-18 01:26:41,540 INFO L226 Difference]: Without dead ends: 5843 [2022-01-18 01:26:41,540 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-18 01:26:41,541 INFO L933 BasicCegarLoop]: 127 mSDtfsCounter, 81 mSDsluCounter, 189 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 81 SdHoareTripleChecker+Valid, 298 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-18 01:26:41,541 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [81 Valid, 298 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-18 01:26:41,549 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5843 states. [2022-01-18 01:26:41,653 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5843 to 5063. [2022-01-18 01:26:41,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5063 states, 5062 states have (on average 2.851244567364678) internal successors, (14433), 5062 states have internal predecessors, (14433), 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) [2022-01-18 01:26:41,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5063 states to 5063 states and 14433 transitions. [2022-01-18 01:26:41,684 INFO L78 Accepts]: Start accepts. Automaton has 5063 states and 14433 transitions. Word has length 97 [2022-01-18 01:26:41,684 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 01:26:41,684 INFO L470 AbstractCegarLoop]: Abstraction has 5063 states and 14433 transitions. [2022-01-18 01:26:41,684 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.25) internal successors, (93), 4 states have internal predecessors, (93), 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) [2022-01-18 01:26:41,685 INFO L276 IsEmpty]: Start isEmpty. Operand 5063 states and 14433 transitions. [2022-01-18 01:26:41,696 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2022-01-18 01:26:41,696 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 01:26:41,697 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 01:26:41,697 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-01-18 01:26:41,697 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 01:26:41,697 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 01:26:41,697 INFO L85 PathProgramCache]: Analyzing trace with hash -1148970286, now seen corresponding path program 1 times [2022-01-18 01:26:41,697 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 01:26:41,698 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1267751818] [2022-01-18 01:26:41,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 01:26:41,698 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 01:26:41,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 01:26:41,852 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-18 01:26:41,853 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 01:26:41,853 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1267751818] [2022-01-18 01:26:41,853 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1267751818] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 01:26:41,853 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [947327620] [2022-01-18 01:26:41,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 01:26:41,853 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 01:26:41,853 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 01:26:41,854 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 01:26:41,883 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-01-18 01:26:41,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 01:26:41,921 INFO L263 TraceCheckSpWp]: Trace formula consists of 201 conjuncts, 18 conjunts are in the unsatisfiable core [2022-01-18 01:26:41,923 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 01:26:42,157 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-18 01:26:42,158 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 01:26:42,334 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-18 01:26:42,335 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [947327620] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 01:26:42,335 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 01:26:42,335 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 11 [2022-01-18 01:26:42,335 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1233576134] [2022-01-18 01:26:42,335 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 01:26:42,336 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-01-18 01:26:42,336 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 01:26:42,336 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-01-18 01:26:42,336 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2022-01-18 01:26:42,336 INFO L87 Difference]: Start difference. First operand 5063 states and 14433 transitions. Second operand has 11 states, 11 states have (on average 9.181818181818182) internal successors, (101), 11 states have internal predecessors, (101), 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) [2022-01-18 01:26:42,564 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 01:26:42,564 INFO L93 Difference]: Finished difference Result 7556 states and 21146 transitions. [2022-01-18 01:26:42,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-01-18 01:26:42,565 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 9.181818181818182) internal successors, (101), 11 states have internal predecessors, (101), 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) Word has length 97 [2022-01-18 01:26:42,565 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 01:26:42,586 INFO L225 Difference]: With dead ends: 7556 [2022-01-18 01:26:42,586 INFO L226 Difference]: Without dead ends: 7505 [2022-01-18 01:26:42,586 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 207 GetRequests, 192 SyntacticMatches, 2 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=60, Invalid=150, Unknown=0, NotChecked=0, Total=210 [2022-01-18 01:26:42,587 INFO L933 BasicCegarLoop]: 148 mSDtfsCounter, 167 mSDsluCounter, 1029 mSDsCounter, 0 mSdLazyCounter, 231 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 167 SdHoareTripleChecker+Valid, 1116 SdHoareTripleChecker+Invalid, 236 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 231 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 01:26:42,587 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [167 Valid, 1116 Invalid, 236 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 231 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 01:26:42,598 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7505 states. [2022-01-18 01:26:42,751 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7505 to 6726. [2022-01-18 01:26:42,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6726 states, 6725 states have (on average 2.850260223048327) internal successors, (19168), 6725 states have internal predecessors, (19168), 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) [2022-01-18 01:26:42,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6726 states to 6726 states and 19168 transitions. [2022-01-18 01:26:42,783 INFO L78 Accepts]: Start accepts. Automaton has 6726 states and 19168 transitions. Word has length 97 [2022-01-18 01:26:42,784 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 01:26:42,784 INFO L470 AbstractCegarLoop]: Abstraction has 6726 states and 19168 transitions. [2022-01-18 01:26:42,784 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.181818181818182) internal successors, (101), 11 states have internal predecessors, (101), 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) [2022-01-18 01:26:42,785 INFO L276 IsEmpty]: Start isEmpty. Operand 6726 states and 19168 transitions. [2022-01-18 01:26:42,801 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2022-01-18 01:26:42,801 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 01:26:42,802 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 01:26:42,827 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-01-18 01:26:43,027 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 01:26:43,028 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 01:26:43,028 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 01:26:43,028 INFO L85 PathProgramCache]: Analyzing trace with hash 795269086, now seen corresponding path program 2 times [2022-01-18 01:26:43,028 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 01:26:43,028 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1619985074] [2022-01-18 01:26:43,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 01:26:43,029 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 01:26:43,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 01:26:43,237 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 01:26:43,237 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 01:26:43,237 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1619985074] [2022-01-18 01:26:43,237 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1619985074] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 01:26:43,237 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1157674664] [2022-01-18 01:26:43,237 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-18 01:26:43,238 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 01:26:43,238 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 01:26:43,239 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 01:26:43,273 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-01-18 01:26:43,314 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 01:26:43,314 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 01:26:43,315 INFO L263 TraceCheckSpWp]: Trace formula consists of 201 conjuncts, 18 conjunts are in the unsatisfiable core [2022-01-18 01:26:43,318 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 01:26:43,569 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 01:26:43,569 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 01:26:43,777 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 01:26:43,777 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1157674664] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 01:26:43,777 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 01:26:43,777 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10, 10] total 15 [2022-01-18 01:26:43,778 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [699802391] [2022-01-18 01:26:43,778 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 01:26:43,778 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-01-18 01:26:43,778 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 01:26:43,779 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-01-18 01:26:43,779 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=166, Unknown=0, NotChecked=0, Total=210 [2022-01-18 01:26:43,779 INFO L87 Difference]: Start difference. First operand 6726 states and 19168 transitions. Second operand has 15 states, 15 states have (on average 7.733333333333333) internal successors, (116), 15 states have internal predecessors, (116), 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) [2022-01-18 01:26:44,337 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 01:26:44,338 INFO L93 Difference]: Finished difference Result 11441 states and 32093 transitions. [2022-01-18 01:26:44,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-01-18 01:26:44,338 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 7.733333333333333) internal successors, (116), 15 states have internal predecessors, (116), 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) Word has length 97 [2022-01-18 01:26:44,338 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 01:26:44,370 INFO L225 Difference]: With dead ends: 11441 [2022-01-18 01:26:44,370 INFO L226 Difference]: Without dead ends: 11390 [2022-01-18 01:26:44,371 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 208 GetRequests, 188 SyntacticMatches, 2 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=94, Invalid=286, Unknown=0, NotChecked=0, Total=380 [2022-01-18 01:26:44,371 INFO L933 BasicCegarLoop]: 171 mSDtfsCounter, 264 mSDsluCounter, 1558 mSDsCounter, 0 mSdLazyCounter, 467 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 264 SdHoareTripleChecker+Valid, 1629 SdHoareTripleChecker+Invalid, 483 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 467 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-18 01:26:44,371 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [264 Valid, 1629 Invalid, 483 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 467 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-18 01:26:44,387 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11390 states. [2022-01-18 01:26:44,530 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11390 to 8603. [2022-01-18 01:26:44,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8603 states, 8602 states have (on average 2.862822599395489) internal successors, (24626), 8602 states have internal predecessors, (24626), 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) [2022-01-18 01:26:44,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8603 states to 8603 states and 24626 transitions. [2022-01-18 01:26:44,633 INFO L78 Accepts]: Start accepts. Automaton has 8603 states and 24626 transitions. Word has length 97 [2022-01-18 01:26:44,633 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 01:26:44,634 INFO L470 AbstractCegarLoop]: Abstraction has 8603 states and 24626 transitions. [2022-01-18 01:26:44,634 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 7.733333333333333) internal successors, (116), 15 states have internal predecessors, (116), 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) [2022-01-18 01:26:44,634 INFO L276 IsEmpty]: Start isEmpty. Operand 8603 states and 24626 transitions. [2022-01-18 01:26:44,655 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2022-01-18 01:26:44,655 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 01:26:44,655 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 01:26:44,681 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-01-18 01:26:44,877 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 01:26:44,877 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 01:26:44,878 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 01:26:44,878 INFO L85 PathProgramCache]: Analyzing trace with hash 880971410, now seen corresponding path program 3 times [2022-01-18 01:26:44,878 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 01:26:44,878 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2130415484] [2022-01-18 01:26:44,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 01:26:44,879 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 01:26:44,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 01:26:45,030 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-18 01:26:45,031 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 01:26:45,031 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2130415484] [2022-01-18 01:26:45,031 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2130415484] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 01:26:45,031 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [613280866] [2022-01-18 01:26:45,031 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-18 01:26:45,031 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 01:26:45,032 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 01:26:45,033 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 01:26:45,055 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-01-18 01:26:45,149 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2022-01-18 01:26:45,150 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 01:26:45,151 INFO L263 TraceCheckSpWp]: Trace formula consists of 201 conjuncts, 18 conjunts are in the unsatisfiable core [2022-01-18 01:26:45,153 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 01:26:45,433 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-18 01:26:45,433 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 01:26:45,645 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-18 01:26:45,645 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [613280866] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 01:26:45,645 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 01:26:45,645 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 11 [2022-01-18 01:26:45,645 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [756268024] [2022-01-18 01:26:45,645 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 01:26:45,646 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-01-18 01:26:45,646 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 01:26:45,646 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-01-18 01:26:45,647 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2022-01-18 01:26:45,647 INFO L87 Difference]: Start difference. First operand 8603 states and 24626 transitions. Second operand has 11 states, 11 states have (on average 9.181818181818182) internal successors, (101), 11 states have internal predecessors, (101), 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) [2022-01-18 01:26:45,902 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 01:26:45,902 INFO L93 Difference]: Finished difference Result 12530 states and 35392 transitions. [2022-01-18 01:26:45,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-01-18 01:26:45,902 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 9.181818181818182) internal successors, (101), 11 states have internal predecessors, (101), 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) Word has length 97 [2022-01-18 01:26:45,903 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 01:26:45,940 INFO L225 Difference]: With dead ends: 12530 [2022-01-18 01:26:45,940 INFO L226 Difference]: Without dead ends: 12479 [2022-01-18 01:26:45,941 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 207 GetRequests, 192 SyntacticMatches, 2 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=60, Invalid=150, Unknown=0, NotChecked=0, Total=210 [2022-01-18 01:26:45,941 INFO L933 BasicCegarLoop]: 156 mSDtfsCounter, 189 mSDsluCounter, 967 mSDsCounter, 0 mSdLazyCounter, 238 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 189 SdHoareTripleChecker+Valid, 1061 SdHoareTripleChecker+Invalid, 246 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 238 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 01:26:45,941 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [189 Valid, 1061 Invalid, 246 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 238 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 01:26:45,959 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12479 states. [2022-01-18 01:26:46,184 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12479 to 11126. [2022-01-18 01:26:46,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11126 states, 11125 states have (on average 2.8750561797752807) internal successors, (31985), 11125 states have internal predecessors, (31985), 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) [2022-01-18 01:26:46,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11126 states to 11126 states and 31985 transitions. [2022-01-18 01:26:46,227 INFO L78 Accepts]: Start accepts. Automaton has 11126 states and 31985 transitions. Word has length 97 [2022-01-18 01:26:46,227 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 01:26:46,227 INFO L470 AbstractCegarLoop]: Abstraction has 11126 states and 31985 transitions. [2022-01-18 01:26:46,227 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.181818181818182) internal successors, (101), 11 states have internal predecessors, (101), 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) [2022-01-18 01:26:46,227 INFO L276 IsEmpty]: Start isEmpty. Operand 11126 states and 31985 transitions. [2022-01-18 01:26:46,250 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2022-01-18 01:26:46,250 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 01:26:46,250 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 01:26:46,275 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2022-01-18 01:26:46,463 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2022-01-18 01:26:46,464 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 01:26:46,464 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 01:26:46,464 INFO L85 PathProgramCache]: Analyzing trace with hash -1405878532, now seen corresponding path program 4 times [2022-01-18 01:26:46,464 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 01:26:46,464 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [219012895] [2022-01-18 01:26:46,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 01:26:46,465 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 01:26:46,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 01:26:46,628 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 01:26:46,628 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 01:26:46,628 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [219012895] [2022-01-18 01:26:46,628 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [219012895] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 01:26:46,628 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1360982504] [2022-01-18 01:26:46,629 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-18 01:26:46,629 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 01:26:46,629 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 01:26:46,630 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) [2022-01-18 01:26:46,631 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-01-18 01:26:46,702 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-18 01:26:46,702 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 01:26:46,703 INFO L263 TraceCheckSpWp]: Trace formula consists of 201 conjuncts, 18 conjunts are in the unsatisfiable core [2022-01-18 01:26:46,706 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 01:26:46,971 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 01:26:46,972 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 01:26:47,148 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 01:26:47,149 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1360982504] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 01:26:47,149 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 01:26:47,149 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 12 [2022-01-18 01:26:47,149 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [231411419] [2022-01-18 01:26:47,149 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 01:26:47,150 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-01-18 01:26:47,150 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 01:26:47,150 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-01-18 01:26:47,150 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2022-01-18 01:26:47,151 INFO L87 Difference]: Start difference. First operand 11126 states and 31985 transitions. Second operand has 12 states, 12 states have (on average 8.416666666666666) internal successors, (101), 12 states have internal predecessors, (101), 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) [2022-01-18 01:26:47,484 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 01:26:47,484 INFO L93 Difference]: Finished difference Result 16322 states and 46218 transitions. [2022-01-18 01:26:47,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-01-18 01:26:47,485 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 8.416666666666666) internal successors, (101), 12 states have internal predecessors, (101), 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) Word has length 97 [2022-01-18 01:26:47,485 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 01:26:47,533 INFO L225 Difference]: With dead ends: 16322 [2022-01-18 01:26:47,533 INFO L226 Difference]: Without dead ends: 16271 [2022-01-18 01:26:47,534 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 207 GetRequests, 191 SyntacticMatches, 2 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=62, Invalid=178, Unknown=0, NotChecked=0, Total=240 [2022-01-18 01:26:47,534 INFO L933 BasicCegarLoop]: 188 mSDtfsCounter, 237 mSDsluCounter, 1536 mSDsCounter, 0 mSdLazyCounter, 367 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 237 SdHoareTripleChecker+Valid, 1628 SdHoareTripleChecker+Invalid, 380 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 367 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-18 01:26:47,534 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [237 Valid, 1628 Invalid, 380 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 367 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-18 01:26:47,557 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16271 states. [2022-01-18 01:26:47,752 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16271 to 12925. [2022-01-18 01:26:47,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12925 states, 12924 states have (on average 2.8837821108016093) internal successors, (37270), 12924 states have internal predecessors, (37270), 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) [2022-01-18 01:26:47,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12925 states to 12925 states and 37270 transitions. [2022-01-18 01:26:47,798 INFO L78 Accepts]: Start accepts. Automaton has 12925 states and 37270 transitions. Word has length 97 [2022-01-18 01:26:47,798 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 01:26:47,798 INFO L470 AbstractCegarLoop]: Abstraction has 12925 states and 37270 transitions. [2022-01-18 01:26:47,798 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.416666666666666) internal successors, (101), 12 states have internal predecessors, (101), 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) [2022-01-18 01:26:47,798 INFO L276 IsEmpty]: Start isEmpty. Operand 12925 states and 37270 transitions. [2022-01-18 01:26:47,873 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2022-01-18 01:26:47,873 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 01:26:47,873 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 01:26:47,899 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-01-18 01:26:48,081 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 01:26:48,081 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 01:26:48,081 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 01:26:48,082 INFO L85 PathProgramCache]: Analyzing trace with hash -663022990, now seen corresponding path program 1 times [2022-01-18 01:26:48,082 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 01:26:48,082 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1015535723] [2022-01-18 01:26:48,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 01:26:48,082 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 01:26:48,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 01:26:48,131 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-01-18 01:26:48,131 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 01:26:48,131 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1015535723] [2022-01-18 01:26:48,131 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1015535723] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 01:26:48,131 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 01:26:48,132 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-18 01:26:48,132 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2141809067] [2022-01-18 01:26:48,132 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 01:26:48,132 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-18 01:26:48,132 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 01:26:48,132 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-18 01:26:48,132 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-18 01:26:48,133 INFO L87 Difference]: Start difference. First operand 12925 states and 37270 transitions. Second operand has 4 states, 4 states have (on average 23.25) internal successors, (93), 4 states have internal predecessors, (93), 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) [2022-01-18 01:26:48,211 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 01:26:48,212 INFO L93 Difference]: Finished difference Result 12783 states and 36086 transitions. [2022-01-18 01:26:48,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-18 01:26:48,212 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 23.25) internal successors, (93), 4 states have internal predecessors, (93), 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) Word has length 97 [2022-01-18 01:26:48,212 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 01:26:48,249 INFO L225 Difference]: With dead ends: 12783 [2022-01-18 01:26:48,249 INFO L226 Difference]: Without dead ends: 12783 [2022-01-18 01:26:48,251 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-18 01:26:48,252 INFO L933 BasicCegarLoop]: 131 mSDtfsCounter, 82 mSDsluCounter, 192 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 82 SdHoareTripleChecker+Valid, 305 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-18 01:26:48,252 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [82 Valid, 305 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-18 01:26:48,267 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12783 states. [2022-01-18 01:26:48,435 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12783 to 11322. [2022-01-18 01:26:48,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11322 states, 11321 states have (on average 2.8554014663015637) internal successors, (32326), 11321 states have internal predecessors, (32326), 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) [2022-01-18 01:26:48,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11322 states to 11322 states and 32326 transitions. [2022-01-18 01:26:48,473 INFO L78 Accepts]: Start accepts. Automaton has 11322 states and 32326 transitions. Word has length 97 [2022-01-18 01:26:48,473 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 01:26:48,473 INFO L470 AbstractCegarLoop]: Abstraction has 11322 states and 32326 transitions. [2022-01-18 01:26:48,474 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.25) internal successors, (93), 4 states have internal predecessors, (93), 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) [2022-01-18 01:26:48,474 INFO L276 IsEmpty]: Start isEmpty. Operand 11322 states and 32326 transitions. [2022-01-18 01:26:48,489 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2022-01-18 01:26:48,490 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 01:26:48,490 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 01:26:48,490 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-01-18 01:26:48,490 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 01:26:48,490 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 01:26:48,490 INFO L85 PathProgramCache]: Analyzing trace with hash 1249554398, now seen corresponding path program 5 times [2022-01-18 01:26:48,490 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 01:26:48,490 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [44303250] [2022-01-18 01:26:48,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 01:26:48,491 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 01:26:48,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 01:26:48,617 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 01:26:48,618 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 01:26:48,618 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [44303250] [2022-01-18 01:26:48,618 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [44303250] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 01:26:48,618 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1086842559] [2022-01-18 01:26:48,618 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-01-18 01:26:48,618 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 01:26:48,618 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 01:26:48,619 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) [2022-01-18 01:26:48,646 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-01-18 01:26:48,740 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2022-01-18 01:26:48,740 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 01:26:48,741 INFO L263 TraceCheckSpWp]: Trace formula consists of 201 conjuncts, 18 conjunts are in the unsatisfiable core [2022-01-18 01:26:48,742 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 01:26:48,973 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 01:26:48,973 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 01:26:49,150 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 01:26:49,150 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1086842559] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 01:26:49,150 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 01:26:49,150 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 12 [2022-01-18 01:26:49,150 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1221593610] [2022-01-18 01:26:49,151 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 01:26:49,151 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-01-18 01:26:49,151 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 01:26:49,152 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-01-18 01:26:49,152 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2022-01-18 01:26:49,152 INFO L87 Difference]: Start difference. First operand 11322 states and 32326 transitions. Second operand has 12 states, 12 states have (on average 8.416666666666666) internal successors, (101), 12 states have internal predecessors, (101), 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) [2022-01-18 01:26:49,485 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 01:26:49,485 INFO L93 Difference]: Finished difference Result 17155 states and 48106 transitions. [2022-01-18 01:26:49,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-01-18 01:26:49,486 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 8.416666666666666) internal successors, (101), 12 states have internal predecessors, (101), 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) Word has length 97 [2022-01-18 01:26:49,486 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 01:26:49,523 INFO L225 Difference]: With dead ends: 17155 [2022-01-18 01:26:49,524 INFO L226 Difference]: Without dead ends: 17104 [2022-01-18 01:26:49,524 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 207 GetRequests, 191 SyntacticMatches, 2 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=62, Invalid=178, Unknown=0, NotChecked=0, Total=240 [2022-01-18 01:26:49,524 INFO L933 BasicCegarLoop]: 180 mSDtfsCounter, 248 mSDsluCounter, 1296 mSDsCounter, 0 mSdLazyCounter, 324 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 248 SdHoareTripleChecker+Valid, 1392 SdHoareTripleChecker+Invalid, 340 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 324 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-18 01:26:49,525 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [248 Valid, 1392 Invalid, 340 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 324 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-18 01:26:49,598 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17104 states. [2022-01-18 01:26:49,744 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17104 to 10198. [2022-01-18 01:26:49,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10198 states, 10197 states have (on average 2.8494655290771798) internal successors, (29056), 10197 states have internal predecessors, (29056), 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) [2022-01-18 01:26:49,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10198 states to 10198 states and 29056 transitions. [2022-01-18 01:26:49,783 INFO L78 Accepts]: Start accepts. Automaton has 10198 states and 29056 transitions. Word has length 97 [2022-01-18 01:26:49,783 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 01:26:49,783 INFO L470 AbstractCegarLoop]: Abstraction has 10198 states and 29056 transitions. [2022-01-18 01:26:49,783 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.416666666666666) internal successors, (101), 12 states have internal predecessors, (101), 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) [2022-01-18 01:26:49,783 INFO L276 IsEmpty]: Start isEmpty. Operand 10198 states and 29056 transitions. [2022-01-18 01:26:49,800 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2022-01-18 01:26:49,800 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 01:26:49,800 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 01:26:49,807 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-01-18 01:26:50,004 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 01:26:50,005 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 01:26:50,005 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 01:26:50,005 INFO L85 PathProgramCache]: Analyzing trace with hash 1971095186, now seen corresponding path program 6 times [2022-01-18 01:26:50,005 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 01:26:50,005 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [904931324] [2022-01-18 01:26:50,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 01:26:50,006 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 01:26:50,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 01:26:50,160 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-18 01:26:50,160 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 01:26:50,160 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [904931324] [2022-01-18 01:26:50,160 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [904931324] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 01:26:50,160 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2063444319] [2022-01-18 01:26:50,160 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-01-18 01:26:50,160 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 01:26:50,161 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 01:26:50,162 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 01:26:50,190 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-01-18 01:26:50,328 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2022-01-18 01:26:50,329 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 01:26:50,330 INFO L263 TraceCheckSpWp]: Trace formula consists of 201 conjuncts, 18 conjunts are in the unsatisfiable core [2022-01-18 01:26:50,331 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 01:26:50,541 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-18 01:26:50,541 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 01:26:50,704 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-18 01:26:50,704 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2063444319] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 01:26:50,704 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 01:26:50,704 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 11 [2022-01-18 01:26:50,705 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [52997961] [2022-01-18 01:26:50,705 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 01:26:50,706 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-01-18 01:26:50,706 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 01:26:50,706 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-01-18 01:26:50,706 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2022-01-18 01:26:50,706 INFO L87 Difference]: Start difference. First operand 10198 states and 29056 transitions. Second operand has 11 states, 11 states have (on average 9.181818181818182) internal successors, (101), 11 states have internal predecessors, (101), 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) [2022-01-18 01:26:50,921 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 01:26:50,922 INFO L93 Difference]: Finished difference Result 12383 states and 34885 transitions. [2022-01-18 01:26:50,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-01-18 01:26:50,922 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 9.181818181818182) internal successors, (101), 11 states have internal predecessors, (101), 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) Word has length 97 [2022-01-18 01:26:50,922 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 01:26:50,943 INFO L225 Difference]: With dead ends: 12383 [2022-01-18 01:26:50,943 INFO L226 Difference]: Without dead ends: 12332 [2022-01-18 01:26:50,943 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 207 GetRequests, 192 SyntacticMatches, 2 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=60, Invalid=150, Unknown=0, NotChecked=0, Total=210 [2022-01-18 01:26:50,944 INFO L933 BasicCegarLoop]: 157 mSDtfsCounter, 218 mSDsluCounter, 903 mSDsCounter, 0 mSdLazyCounter, 193 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 218 SdHoareTripleChecker+Valid, 1004 SdHoareTripleChecker+Invalid, 199 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 193 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 01:26:50,944 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [218 Valid, 1004 Invalid, 199 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 193 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 01:26:50,957 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12332 states. [2022-01-18 01:26:51,179 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12332 to 11306. [2022-01-18 01:26:51,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11306 states, 11305 states have (on average 2.8598850066342325) internal successors, (32331), 11305 states have internal predecessors, (32331), 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) [2022-01-18 01:26:51,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11306 states to 11306 states and 32331 transitions. [2022-01-18 01:26:51,221 INFO L78 Accepts]: Start accepts. Automaton has 11306 states and 32331 transitions. Word has length 97 [2022-01-18 01:26:51,221 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 01:26:51,221 INFO L470 AbstractCegarLoop]: Abstraction has 11306 states and 32331 transitions. [2022-01-18 01:26:51,222 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.181818181818182) internal successors, (101), 11 states have internal predecessors, (101), 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) [2022-01-18 01:26:51,222 INFO L276 IsEmpty]: Start isEmpty. Operand 11306 states and 32331 transitions. [2022-01-18 01:26:51,236 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2022-01-18 01:26:51,236 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 01:26:51,236 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 01:26:51,243 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-01-18 01:26:51,440 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2022-01-18 01:26:51,440 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 01:26:51,441 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 01:26:51,441 INFO L85 PathProgramCache]: Analyzing trace with hash -951593220, now seen corresponding path program 7 times [2022-01-18 01:26:51,441 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 01:26:51,441 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [854093163] [2022-01-18 01:26:51,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 01:26:51,441 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 01:26:51,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 01:26:51,637 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 01:26:51,637 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 01:26:51,637 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [854093163] [2022-01-18 01:26:51,637 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [854093163] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 01:26:51,638 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1701141165] [2022-01-18 01:26:51,638 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-01-18 01:26:51,638 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 01:26:51,638 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 01:26:51,639 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 01:26:51,640 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-01-18 01:26:51,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 01:26:51,708 INFO L263 TraceCheckSpWp]: Trace formula consists of 201 conjuncts, 18 conjunts are in the unsatisfiable core [2022-01-18 01:26:51,710 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 01:26:51,961 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 01:26:51,961 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 01:26:52,184 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 01:26:52,184 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1701141165] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 01:26:52,184 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 01:26:52,184 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10, 10] total 15 [2022-01-18 01:26:52,185 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [771256042] [2022-01-18 01:26:52,185 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 01:26:52,185 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-01-18 01:26:52,185 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 01:26:52,186 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-01-18 01:26:52,186 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=166, Unknown=0, NotChecked=0, Total=210 [2022-01-18 01:26:52,186 INFO L87 Difference]: Start difference. First operand 11306 states and 32331 transitions. Second operand has 15 states, 15 states have (on average 7.733333333333333) internal successors, (116), 15 states have internal predecessors, (116), 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) [2022-01-18 01:26:52,718 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 01:26:52,719 INFO L93 Difference]: Finished difference Result 14985 states and 41796 transitions. [2022-01-18 01:26:52,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-01-18 01:26:52,719 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 7.733333333333333) internal successors, (116), 15 states have internal predecessors, (116), 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) Word has length 97 [2022-01-18 01:26:52,719 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 01:26:52,745 INFO L225 Difference]: With dead ends: 14985 [2022-01-18 01:26:52,745 INFO L226 Difference]: Without dead ends: 14934 [2022-01-18 01:26:52,745 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 208 GetRequests, 188 SyntacticMatches, 2 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=94, Invalid=286, Unknown=0, NotChecked=0, Total=380 [2022-01-18 01:26:52,746 INFO L933 BasicCegarLoop]: 187 mSDtfsCounter, 272 mSDsluCounter, 1556 mSDsCounter, 0 mSdLazyCounter, 452 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 272 SdHoareTripleChecker+Valid, 1641 SdHoareTripleChecker+Invalid, 466 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 452 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-18 01:26:52,746 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [272 Valid, 1641 Invalid, 466 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 452 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-18 01:26:52,764 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14934 states. [2022-01-18 01:26:52,916 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14934 to 9330. [2022-01-18 01:26:52,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9330 states, 9329 states have (on average 2.836424054025083) internal successors, (26461), 9329 states have internal predecessors, (26461), 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) [2022-01-18 01:26:52,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9330 states to 9330 states and 26461 transitions. [2022-01-18 01:26:52,951 INFO L78 Accepts]: Start accepts. Automaton has 9330 states and 26461 transitions. Word has length 97 [2022-01-18 01:26:52,952 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 01:26:52,952 INFO L470 AbstractCegarLoop]: Abstraction has 9330 states and 26461 transitions. [2022-01-18 01:26:52,952 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 7.733333333333333) internal successors, (116), 15 states have internal predecessors, (116), 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) [2022-01-18 01:26:52,952 INFO L276 IsEmpty]: Start isEmpty. Operand 9330 states and 26461 transitions. [2022-01-18 01:26:52,966 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2022-01-18 01:26:52,966 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 01:26:52,966 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 01:26:52,982 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-01-18 01:26:53,167 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2022-01-18 01:26:53,167 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 01:26:53,167 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 01:26:53,168 INFO L85 PathProgramCache]: Analyzing trace with hash -1886658527, now seen corresponding path program 8 times [2022-01-18 01:26:53,168 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 01:26:53,168 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [863280608] [2022-01-18 01:26:53,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 01:26:53,168 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 01:26:53,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 01:26:53,485 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 14 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 01:26:53,486 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 01:26:53,486 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [863280608] [2022-01-18 01:26:53,486 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [863280608] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 01:26:53,486 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1269734972] [2022-01-18 01:26:53,486 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-18 01:26:53,486 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 01:26:53,486 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 01:26:53,487 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 01:26:53,489 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-01-18 01:26:53,733 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 01:26:53,733 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 01:26:53,734 INFO L263 TraceCheckSpWp]: Trace formula consists of 212 conjuncts, 20 conjunts are in the unsatisfiable core [2022-01-18 01:26:53,736 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 01:26:54,490 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-01-18 01:26:54,491 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 01:26:58,345 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-01-18 01:26:58,345 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1269734972] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 01:26:58,345 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 01:26:58,345 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 13, 13] total 37 [2022-01-18 01:26:58,346 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [549145071] [2022-01-18 01:26:58,346 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 01:26:58,346 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2022-01-18 01:26:58,346 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 01:26:58,346 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2022-01-18 01:26:58,347 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=119, Invalid=1213, Unknown=0, NotChecked=0, Total=1332 [2022-01-18 01:26:58,347 INFO L87 Difference]: Start difference. First operand 9330 states and 26461 transitions. Second operand has 37 states, 37 states have (on average 5.621621621621622) internal successors, (208), 37 states have internal predecessors, (208), 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) [2022-01-18 01:27:17,947 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.61s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-18 01:27:24,065 WARN L228 SmtUtils]: Spent 5.34s on a formula simplification. DAG size of input: 63 DAG size of output: 38 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-01-18 01:27:52,291 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 01:27:52,291 INFO L93 Difference]: Finished difference Result 37836 states and 106383 transitions. [2022-01-18 01:27:52,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 156 states. [2022-01-18 01:27:52,292 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 5.621621621621622) internal successors, (208), 37 states have internal predecessors, (208), 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) Word has length 104 [2022-01-18 01:27:52,292 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 01:27:52,350 INFO L225 Difference]: With dead ends: 37836 [2022-01-18 01:27:52,350 INFO L226 Difference]: Without dead ends: 37056 [2022-01-18 01:27:52,355 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 375 GetRequests, 194 SyntacticMatches, 0 SemanticMatches, 181 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10884 ImplicationChecksByTransitivity, 41.8s TimeCoverageRelationStatistics Valid=2550, Invalid=30756, Unknown=0, NotChecked=0, Total=33306 [2022-01-18 01:27:52,356 INFO L933 BasicCegarLoop]: 702 mSDtfsCounter, 2686 mSDsluCounter, 16286 mSDsCounter, 0 mSdLazyCounter, 6592 mSolverCounterSat, 188 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2686 SdHoareTripleChecker+Valid, 15475 SdHoareTripleChecker+Invalid, 7252 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 188 IncrementalHoareTripleChecker+Valid, 6592 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 472 IncrementalHoareTripleChecker+Unchecked, 15.5s IncrementalHoareTripleChecker+Time [2022-01-18 01:27:52,356 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2686 Valid, 15475 Invalid, 7252 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [188 Valid, 6592 Invalid, 0 Unknown, 472 Unchecked, 15.5s Time] [2022-01-18 01:27:52,386 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37056 states. [2022-01-18 01:27:52,735 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37056 to 33882. [2022-01-18 01:27:52,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33882 states, 33881 states have (on average 2.8289306691065788) internal successors, (95847), 33881 states have internal predecessors, (95847), 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) [2022-01-18 01:27:52,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33882 states to 33882 states and 95847 transitions. [2022-01-18 01:27:52,846 INFO L78 Accepts]: Start accepts. Automaton has 33882 states and 95847 transitions. Word has length 104 [2022-01-18 01:27:52,847 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 01:27:52,847 INFO L470 AbstractCegarLoop]: Abstraction has 33882 states and 95847 transitions. [2022-01-18 01:27:52,847 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 37 states have (on average 5.621621621621622) internal successors, (208), 37 states have internal predecessors, (208), 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) [2022-01-18 01:27:52,847 INFO L276 IsEmpty]: Start isEmpty. Operand 33882 states and 95847 transitions. [2022-01-18 01:27:52,894 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2022-01-18 01:27:52,894 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 01:27:52,894 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 01:27:52,901 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-01-18 01:27:53,098 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 01:27:53,098 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 01:27:53,099 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 01:27:53,099 INFO L85 PathProgramCache]: Analyzing trace with hash 1299616934, now seen corresponding path program 9 times [2022-01-18 01:27:53,099 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 01:27:53,099 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1646630180] [2022-01-18 01:27:53,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 01:27:53,099 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 01:27:53,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 01:27:53,752 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-01-18 01:27:53,753 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 01:27:53,753 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1646630180] [2022-01-18 01:27:53,753 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1646630180] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 01:27:53,753 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [649306846] [2022-01-18 01:27:53,753 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-18 01:27:53,753 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 01:27:53,753 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 01:27:53,754 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 01:27:53,755 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-01-18 01:27:53,934 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-01-18 01:27:53,934 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 01:27:53,935 INFO L263 TraceCheckSpWp]: Trace formula consists of 212 conjuncts, 27 conjunts are in the unsatisfiable core [2022-01-18 01:27:53,937 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 01:27:54,978 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 14 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 01:27:54,979 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 01:27:58,769 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 20 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 01:27:58,769 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [649306846] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 01:27:58,770 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 01:27:58,770 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 15, 16] total 41 [2022-01-18 01:27:58,770 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [856009894] [2022-01-18 01:27:58,770 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 01:27:58,770 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2022-01-18 01:27:58,771 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 01:27:58,771 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2022-01-18 01:27:58,771 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=196, Invalid=1444, Unknown=0, NotChecked=0, Total=1640 [2022-01-18 01:27:58,772 INFO L87 Difference]: Start difference. First operand 33882 states and 95847 transitions. Second operand has 41 states, 41 states have (on average 5.195121951219512) internal successors, (213), 41 states have internal predecessors, (213), 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) [2022-01-18 01:28:41,110 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-18 01:31:04,721 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.08s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-18 01:31:13,040 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 01:31:13,041 INFO L93 Difference]: Finished difference Result 120170 states and 337281 transitions. [2022-01-18 01:31:13,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 226 states. [2022-01-18 01:31:13,042 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 41 states have (on average 5.195121951219512) internal successors, (213), 41 states have internal predecessors, (213), 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) Word has length 104 [2022-01-18 01:31:13,042 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 01:31:13,338 INFO L225 Difference]: With dead ends: 120170 [2022-01-18 01:31:13,338 INFO L226 Difference]: Without dead ends: 119930 [2022-01-18 01:31:13,344 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 436 GetRequests, 183 SyntacticMatches, 2 SemanticMatches, 251 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25757 ImplicationChecksByTransitivity, 161.8s TimeCoverageRelationStatistics Valid=5672, Invalid=58069, Unknown=15, NotChecked=0, Total=63756 [2022-01-18 01:31:13,345 INFO L933 BasicCegarLoop]: 429 mSDtfsCounter, 2934 mSDsluCounter, 9533 mSDsCounter, 0 mSdLazyCounter, 4766 mSolverCounterSat, 287 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 34.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2934 SdHoareTripleChecker+Valid, 8763 SdHoareTripleChecker+Invalid, 5054 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 287 IncrementalHoareTripleChecker+Valid, 4766 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 35.7s IncrementalHoareTripleChecker+Time [2022-01-18 01:31:13,345 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2934 Valid, 8763 Invalid, 5054 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [287 Valid, 4766 Invalid, 1 Unknown, 0 Unchecked, 35.7s Time] [2022-01-18 01:31:13,541 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119930 states. [2022-01-18 01:31:14,835 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119930 to 53467. [2022-01-18 01:31:14,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53467 states, 53466 states have (on average 2.8368308831780946) internal successors, (151674), 53466 states have internal predecessors, (151674), 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) [2022-01-18 01:31:15,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53467 states to 53467 states and 151674 transitions. [2022-01-18 01:31:15,151 INFO L78 Accepts]: Start accepts. Automaton has 53467 states and 151674 transitions. Word has length 104 [2022-01-18 01:31:15,151 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 01:31:15,151 INFO L470 AbstractCegarLoop]: Abstraction has 53467 states and 151674 transitions. [2022-01-18 01:31:15,151 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 5.195121951219512) internal successors, (213), 41 states have internal predecessors, (213), 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) [2022-01-18 01:31:15,151 INFO L276 IsEmpty]: Start isEmpty. Operand 53467 states and 151674 transitions. [2022-01-18 01:31:15,221 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2022-01-18 01:31:15,221 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 01:31:15,221 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 01:31:15,237 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-01-18 01:31:15,421 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 01:31:15,422 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 01:31:15,422 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 01:31:15,422 INFO L85 PathProgramCache]: Analyzing trace with hash -1105744580, now seen corresponding path program 10 times [2022-01-18 01:31:15,422 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 01:31:15,423 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [73758242] [2022-01-18 01:31:15,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 01:31:15,423 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 01:31:15,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 01:31:16,311 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 01:31:16,311 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 01:31:16,311 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [73758242] [2022-01-18 01:31:16,312 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [73758242] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 01:31:16,312 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1679463722] [2022-01-18 01:31:16,312 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-18 01:31:16,312 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 01:31:16,312 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 01:31:16,313 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 01:31:16,324 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-01-18 01:31:16,492 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-18 01:31:16,492 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 01:31:16,493 INFO L263 TraceCheckSpWp]: Trace formula consists of 212 conjuncts, 24 conjunts are in the unsatisfiable core [2022-01-18 01:31:16,494 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 01:31:23,337 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 01:31:23,338 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 01:31:35,014 WARN L838 $PredicateComparison]: unable to prove that (or (= |c_ULTIMATE.start_assume_abort_if_not_~cond#1| 0) (forall ((~N~0 Int)) (let ((.cse0 (* 2 ~N~0))) (let ((.cse1 (mod .cse0 4294967296))) (or (<= (+ c_~i1~0 3 (* 4294967296 (div .cse0 4294967296))) (+ .cse0 (* (div (+ c_~i1~0 2) 4294967296) 4294967296))) (not (< (mod (+ 2 c_~i2~0) 4294967296) .cse1)) (not (< (mod (+ c_~i2~0 1) 4294967296) .cse1))))))) is different from false [2022-01-18 01:31:40,583 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 6 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 01:31:40,584 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1679463722] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 01:31:40,584 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 01:31:40,584 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 15, 15] total 42 [2022-01-18 01:31:40,584 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1427087784] [2022-01-18 01:31:40,584 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 01:31:40,585 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2022-01-18 01:31:40,585 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 01:31:40,585 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2022-01-18 01:31:40,586 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=206, Invalid=1436, Unknown=2, NotChecked=78, Total=1722 [2022-01-18 01:31:40,586 INFO L87 Difference]: Start difference. First operand 53467 states and 151674 transitions. Second operand has 42 states, 42 states have (on average 5.0476190476190474) internal successors, (212), 42 states have internal predecessors, (212), 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) [2022-01-18 01:33:49,736 WARN L228 SmtUtils]: Spent 5.83s on a formula simplification. DAG size of input: 88 DAG size of output: 44 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-01-18 01:34:34,016 WARN L228 SmtUtils]: Spent 10.60s on a formula simplification. DAG size of input: 88 DAG size of output: 67 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-01-18 01:34:58,508 WARN L228 SmtUtils]: Spent 13.40s on a formula simplification. DAG size of input: 95 DAG size of output: 74 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-01-18 01:36:37,548 WARN L228 SmtUtils]: Spent 7.76s on a formula simplification. DAG size of input: 66 DAG size of output: 34 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-01-18 01:40:08,200 WARN L228 SmtUtils]: Spent 29.58s on a formula simplification. DAG size of input: 111 DAG size of output: 71 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-01-18 01:40:10,260 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse4 (* c_~N~0 2))) (let ((.cse8 (mod .cse4 4294967296)) (.cse11 (div .cse4 4294967296))) (let ((.cse1 (* (div (+ c_~i1~0 (* (- 1) c_~i2~0) 1) 4294967296) 4294967296)) (.cse7 (* (- 1) |c_thread1Thread1of1ForFork0_#t~post3|)) (.cse2 (+ c_~i1~0 (* 4294967296 .cse11) 2)) (.cse10 (* c_~i1~0 (- 1))) (.cse9 (div (+ (- 3) .cse8) (- 4294967296))) (.cse0 (+ c_~i1~0 1))) (and (<= .cse0 (+ (* (div (+ .cse1 (- 2) (* (div (+ c_~i2~0 4294967293) 4294967296) (- 4294967296)) c_~i2~0) 4294967296) 4294967296) c_~i2~0)) (<= .cse2 (let ((.cse3 (div c_~i2~0 4294967296))) (+ (* (div (+ .cse1 (- 2) (* .cse3 (- 4294967296)) c_~i2~0) 4294967296) 4294967296) .cse4 (* .cse3 4294967296)))) (forall ((~N~0 Int)) (let ((.cse6 (* 2 ~N~0))) (let ((.cse5 (mod .cse6 4294967296))) (or (not (< (mod (+ |c_thread2Thread1of1ForFork1_#t~post4| 2) 4294967296) .cse5)) (not (< (mod (+ |c_thread2Thread1of1ForFork1_#t~post4| 1) 4294967296) .cse5)) (<= (+ c_~i1~0 2 (* 4294967296 (div .cse6 4294967296))) (+ .cse6 (* (div (+ c_~i1~0 1) 4294967296) 4294967296))))))) (< (div (+ (- 2) .cse7 .cse8) (- 4294967296)) (+ (div (+ (- 1) |c_thread1Thread1of1ForFork0_#t~post3|) 4294967296) 1)) (< (+ (div (+ .cse7 1) (- 4294967296)) .cse9) (+ (div (+ |c_thread1Thread1of1ForFork0_#t~post3| 1) 4294967296) 1)) (< (div (+ (- 2) .cse10 .cse8) (- 4294967296)) (+ (div (+ c_~i1~0 (- 1)) 4294967296) 1)) (<= .cse2 (+ (* (div (+ |c_thread2Thread1of1ForFork1_#t~post4| (- 2) (* 4294967296 (div (+ c_~i1~0 (* |c_thread2Thread1of1ForFork1_#t~post4| (- 1)) 1) 4294967296))) 4294967296) 4294967296) .cse4)) (< (* .cse11 2147483648) c_~N~0) (< (+ (div (+ .cse10 1) (- 4294967296)) .cse9) (+ (div .cse0 4294967296) 1)))))) is different from false [2022-01-18 01:40:42,036 WARN L228 SmtUtils]: Spent 17.68s on a formula simplification. DAG size of input: 101 DAG size of output: 60 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-01-18 01:40:44,048 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse5 (* c_~N~0 2))) (let ((.cse7 (mod .cse5 4294967296))) (let ((.cse6 (* (- 1) |c_thread1Thread1of1ForFork0_#t~post3|)) (.cse4 (+ c_~i1~0 (* 4294967296 (div .cse5 4294967296)) 2)) (.cse9 (* c_~i1~0 (- 1))) (.cse8 (div (+ (- 3) .cse7) (- 4294967296)))) (and (forall ((~N~0 Int)) (let ((.cse1 (* 2 ~N~0))) (let ((.cse0 (mod .cse1 4294967296))) (or (not (< (mod c_~i2~0 4294967296) .cse0)) (not (< (mod (+ c_~i2~0 1) 4294967296) .cse0)) (<= (+ c_~i1~0 2 (* 4294967296 (div .cse1 4294967296))) (+ .cse1 (* (div (+ c_~i1~0 1) 4294967296) 4294967296))))))) (forall ((~N~0 Int)) (let ((.cse3 (* 2 ~N~0))) (let ((.cse2 (mod .cse3 4294967296))) (or (not (< (mod (+ 2 c_~i2~0) 4294967296) .cse2)) (<= (+ |c_thread1Thread1of1ForFork0_#t~post3| 3 (* 4294967296 (div .cse3 4294967296))) (+ .cse3 (* 4294967296 (div (+ |c_thread1Thread1of1ForFork0_#t~post3| 2) 4294967296)))) (not (< (mod (+ c_~i2~0 1) 4294967296) .cse2)))))) (<= .cse4 (+ .cse5 (* 4294967296 (div (+ (* (div (+ c_~i1~0 2 (* (- 1) c_~i2~0)) 4294967296) 4294967296) (- 3) c_~i2~0) 4294967296)))) (< (div (+ (- 2) .cse6 .cse7) (- 4294967296)) (+ (div (+ (- 1) |c_thread1Thread1of1ForFork0_#t~post3|) 4294967296) 1)) (< (+ (div (+ .cse6 1) (- 4294967296)) .cse8) (+ (div (+ |c_thread1Thread1of1ForFork0_#t~post3| 1) 4294967296) 1)) (< (div (+ (- 2) .cse9 .cse7) (- 4294967296)) (+ (div (+ c_~i1~0 (- 1)) 4294967296) 1)) (forall ((~N~0 Int)) (let ((.cse10 (* 2 ~N~0))) (let ((.cse11 (mod .cse10 4294967296))) (or (<= (+ c_~i1~0 3 (* 4294967296 (div .cse10 4294967296))) (+ .cse10 (* (div (+ c_~i1~0 2) 4294967296) 4294967296))) (not (< (mod (+ 2 c_~i2~0) 4294967296) .cse11)) (not (< (mod (+ c_~i2~0 1) 4294967296) .cse11)))))) (<= .cse4 (+ (* (div (+ |c_thread2Thread1of1ForFork1_#t~post4| (- 2) (* 4294967296 (div (+ c_~i1~0 (* |c_thread2Thread1of1ForFork1_#t~post4| (- 1)) 1) 4294967296))) 4294967296) 4294967296) .cse5)) (< (+ (div (+ .cse9 1) (- 4294967296)) .cse8) (+ (div (+ c_~i1~0 1) 4294967296) 1)))))) is different from false Received shutdown request... [2022-01-18 01:40:53,278 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2022-01-18 01:40:53,278 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2022-01-18 01:40:53,939 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 79 states. [2022-01-18 01:40:53,941 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 318 GetRequests, 204 SyntacticMatches, 6 SemanticMatches, 107 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 2791 ImplicationChecksByTransitivity, 552.9s TimeCoverageRelationStatistics Valid=1652, Invalid=9390, Unknown=100, NotChecked=630, Total=11772 [2022-01-18 01:40:53,941 INFO L933 BasicCegarLoop]: 258 mSDtfsCounter, 1555 mSDsluCounter, 5053 mSDsCounter, 0 mSdLazyCounter, 1490 mSolverCounterSat, 65 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1555 SdHoareTripleChecker+Valid, 4746 SdHoareTripleChecker+Invalid, 3197 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 65 IncrementalHoareTripleChecker+Valid, 1490 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1642 IncrementalHoareTripleChecker+Unchecked, 9.5s IncrementalHoareTripleChecker+Time [2022-01-18 01:40:53,942 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1555 Valid, 4746 Invalid, 3197 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [65 Valid, 1490 Invalid, 0 Unknown, 1642 Unchecked, 9.5s Time] [2022-01-18 01:40:53,942 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining) [2022-01-18 01:40:53,947 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2022-01-18 01:40:54,147 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2022-01-18 01:40:54,147 WARN L594 AbstractCegarLoop]: Verification canceled: while BasicCegarLoop was constructing difference of abstraction (53467states) and FLOYD_HOARE automaton (currently 79 states, 42 states before enhancement),while PredicateComparison was comparing new predicate (quantified with 0quantifier alternations) to 109 known predicates. [2022-01-18 01:40:54,149 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0INUSE_VIOLATION (1 of 3 remaining) [2022-01-18 01:40:54,149 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1INUSE_VIOLATION (0 of 3 remaining) [2022-01-18 01:40:54,151 INFO L732 BasicCegarLoop]: Path program histogram: [10, 2, 2, 2, 2, 1, 1, 1] [2022-01-18 01:40:54,153 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-01-18 01:40:54,153 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2022-01-18 01:40:54,155 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.01 01:40:54 BasicIcfg [2022-01-18 01:40:54,155 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-01-18 01:40:54,155 INFO L158 Benchmark]: Toolchain (without parser) took 860271.11ms. Allocated memory was 388.0MB in the beginning and 1.1GB in the end (delta: 729.8MB). Free memory was 329.5MB in the beginning and 590.7MB in the end (delta: -261.2MB). Peak memory consumption was 468.6MB. Max. memory is 16.0GB. [2022-01-18 01:40:54,156 INFO L158 Benchmark]: CDTParser took 0.11ms. Allocated memory is still 388.0MB. Free memory was 345.9MB in the beginning and 345.8MB in the end (delta: 118.9kB). There was no memory consumed. Max. memory is 16.0GB. [2022-01-18 01:40:54,156 INFO L158 Benchmark]: CACSL2BoogieTranslator took 281.84ms. Allocated memory was 388.0MB in the beginning and 539.0MB in the end (delta: 151.0MB). Free memory was 329.3MB in the beginning and 508.1MB in the end (delta: -178.8MB). Peak memory consumption was 4.5MB. Max. memory is 16.0GB. [2022-01-18 01:40:54,156 INFO L158 Benchmark]: Boogie Procedure Inliner took 39.09ms. Allocated memory is still 539.0MB. Free memory was 508.1MB in the beginning and 506.0MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2022-01-18 01:40:54,156 INFO L158 Benchmark]: Boogie Preprocessor took 28.71ms. Allocated memory is still 539.0MB. Free memory was 506.0MB in the beginning and 505.0MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2022-01-18 01:40:54,156 INFO L158 Benchmark]: RCFGBuilder took 353.60ms. Allocated memory is still 539.0MB. Free memory was 505.0MB in the beginning and 489.3MB in the end (delta: 15.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.0GB. [2022-01-18 01:40:54,157 INFO L158 Benchmark]: TraceAbstraction took 859562.16ms. Allocated memory was 539.0MB in the beginning and 1.1GB in the end (delta: 578.8MB). Free memory was 488.2MB in the beginning and 590.7MB in the end (delta: -102.5MB). Peak memory consumption was 477.4MB. Max. memory is 16.0GB. [2022-01-18 01:40:54,158 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11ms. Allocated memory is still 388.0MB. Free memory was 345.9MB in the beginning and 345.8MB in the end (delta: 118.9kB). There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 281.84ms. Allocated memory was 388.0MB in the beginning and 539.0MB in the end (delta: 151.0MB). Free memory was 329.3MB in the beginning and 508.1MB in the end (delta: -178.8MB). Peak memory consumption was 4.5MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 39.09ms. Allocated memory is still 539.0MB. Free memory was 508.1MB in the beginning and 506.0MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 28.71ms. Allocated memory is still 539.0MB. Free memory was 506.0MB in the beginning and 505.0MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 353.60ms. Allocated memory is still 539.0MB. Free memory was 505.0MB in the beginning and 489.3MB in the end (delta: 15.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.0GB. * TraceAbstraction took 859562.16ms. Allocated memory was 539.0MB in the beginning and 1.1GB in the end (delta: 578.8MB). Free memory was 488.2MB in the beginning and 590.7MB in the end (delta: -102.5MB). Peak memory consumption was 477.4MB. Max. memory is 16.0GB. * 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 - TimeoutResultAtElement [Line: 99]: Timeout (TraceAbstraction) Unable to prove that call to reach_error is unreachable Cancelled while BasicCegarLoop was constructing difference of abstraction (53467states) and FLOYD_HOARE automaton (currently 79 states, 42 states before enhancement),while PredicateComparison was comparing new predicate (quantified with 0quantifier alternations) to 109 known predicates. - TimeoutResultAtElement [Line: 94]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while BasicCegarLoop was constructing difference of abstraction (53467states) and FLOYD_HOARE automaton (currently 79 states, 42 states before enhancement),while PredicateComparison was comparing new predicate (quantified with 0quantifier alternations) to 109 known predicates. - TimeoutResultAtElement [Line: 93]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while BasicCegarLoop was constructing difference of abstraction (53467states) and FLOYD_HOARE automaton (currently 79 states, 42 states before enhancement),while PredicateComparison was comparing new predicate (quantified with 0quantifier alternations) to 109 known predicates. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 121 locations, 3 error locations. Started 1 CEGAR loops. OverallTime: 859.4s, OverallIterations: 21, TraceHistogramMax: 3, PathProgramHistogramMax: 10, EmptinessCheckTime: 0.4s, AutomataDifference: 806.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 1 mSolverCounterUnknown, 10930 SdHoareTripleChecker+Valid, 63.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 10930 mSDsluCounter, 42454 SdHoareTripleChecker+Invalid, 60.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 2114 IncrementalHoareTripleChecker+Unchecked, 42831 mSDsCounter, 689 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 16137 IncrementalHoareTripleChecker+Invalid, 18941 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 689 mSolverCounterUnsat, 3725 mSDtfsCounter, 16137 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 3013 GetRequests, 2260 SyntacticMatches, 26 SemanticMatches, 726 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 39835 ImplicationChecksByTransitivity, 759.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=53467occurred in iteration=20, InterpolantAutomatonStates: 534, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 4.8s AutomataMinimizationTime, 20 MinimizatonAttempts, 96973 StatesRemovedByMinimization, 19 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 1.6s SatisfiabilityAnalysisTime, 42.3s InterpolantComputationTime, 3054 NumberOfCodeBlocks, 3054 NumberOfCodeBlocksAsserted, 51 NumberOfCheckSat, 4173 ConstructedInterpolants, 77 QuantifiedInterpolants, 33390 SizeOfPredicates, 139 NumberOfNonLiveVariables, 2409 ConjunctsInSsa, 223 ConjunctsInUnsatCore, 45 InterpolantComputations, 9 PerfectInterpolantSequences, 178/687 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 RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown