/usr/bin/java -Xmx8000000000 -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/pthread-ext/17_szymanski.i -------------------------------------------------------------------------------- This is Ultimate 0.2.2-wip.dk.mcr-reduction-4b0ab11 [2022-03-01 14:37:40,581 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-03-01 14:37:40,610 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-03-01 14:37:40,627 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-03-01 14:37:40,650 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 [2022-03-01 14:37:40,662 INFO L113 SettingsManager]: Loading preferences was successful [2022-03-01 14:37:40,662 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-03-01 14:37:40,662 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-03-01 14:37:40,663 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-03-01 14:37:40,663 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-03-01 14:37:40,663 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-03-01 14:37:40,664 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-03-01 14:37:40,664 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-03-01 14:37:40,664 INFO L138 SettingsManager]: * Use SBE=true [2022-03-01 14:37:40,664 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-03-01 14:37:40,664 INFO L138 SettingsManager]: * sizeof long=4 [2022-03-01 14:37:40,664 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-03-01 14:37:40,664 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-03-01 14:37:40,664 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-03-01 14:37:40,665 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-03-01 14:37:40,665 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-03-01 14:37:40,665 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-03-01 14:37:40,665 INFO L138 SettingsManager]: * sizeof long double=12 [2022-03-01 14:37:40,665 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-03-01 14:37:40,665 INFO L138 SettingsManager]: * Use constant arrays=true [2022-03-01 14:37:40,665 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-03-01 14:37:40,665 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-03-01 14:37:40,666 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-03-01 14:37:40,666 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-03-01 14:37:40,666 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-03-01 14:37:40,666 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-03-01 14:37:40,666 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-03-01 14:37:40,666 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-03-01 14:37:40,666 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-03-01 14:37:40,666 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-03-01 14:37:40,667 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-03-01 14:37:40,667 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-03-01 14:37:40,667 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-03-01 14:37:40,667 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-03-01 14:37:40,803 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-03-01 14:37:40,816 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-03-01 14:37:40,818 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-03-01 14:37:40,819 INFO L271 PluginConnector]: Initializing CDTParser... [2022-03-01 14:37:40,819 INFO L275 PluginConnector]: CDTParser initialized [2022-03-01 14:37:40,820 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-ext/17_szymanski.i [2022-03-01 14:37:40,863 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ae8c975fc/ba4510c79466454bb85b6e0e00b71c24/FLAG74324e3fd [2022-03-01 14:37:41,297 INFO L306 CDTParser]: Found 1 translation units. [2022-03-01 14:37:41,298 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-ext/17_szymanski.i [2022-03-01 14:37:41,309 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ae8c975fc/ba4510c79466454bb85b6e0e00b71c24/FLAG74324e3fd [2022-03-01 14:37:41,634 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ae8c975fc/ba4510c79466454bb85b6e0e00b71c24 [2022-03-01 14:37:41,636 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-03-01 14:37:41,637 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-03-01 14:37:41,638 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-03-01 14:37:41,638 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-03-01 14:37:41,640 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-03-01 14:37:41,641 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.03 02:37:41" (1/1) ... [2022-03-01 14:37:41,641 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@501f4e82 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.03 02:37:41, skipping insertion in model container [2022-03-01 14:37:41,642 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.03 02:37:41" (1/1) ... [2022-03-01 14:37:41,646 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-03-01 14:37:41,665 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-03-01 14:37:41,903 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-ext/17_szymanski.i[30132,30145] [2022-03-01 14:37:41,914 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-ext/17_szymanski.i[30481,30494] [2022-03-01 14:37:41,920 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-03-01 14:37:41,925 INFO L203 MainTranslator]: Completed pre-run [2022-03-01 14:37:41,958 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-ext/17_szymanski.i[30132,30145] [2022-03-01 14:37:41,973 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-ext/17_szymanski.i[30481,30494] [2022-03-01 14:37:41,976 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-03-01 14:37:42,005 INFO L208 MainTranslator]: Completed translation [2022-03-01 14:37:42,005 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.03 02:37:42 WrapperNode [2022-03-01 14:37:42,005 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-03-01 14:37:42,008 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-03-01 14:37:42,008 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-03-01 14:37:42,008 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-03-01 14:37:42,014 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.03 02:37:42" (1/1) ... [2022-03-01 14:37:42,026 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.03 02:37:42" (1/1) ... [2022-03-01 14:37:42,039 INFO L137 Inliner]: procedures = 167, calls = 12, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 61 [2022-03-01 14:37:42,039 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-03-01 14:37:42,040 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-03-01 14:37:42,040 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-03-01 14:37:42,040 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-03-01 14:37:42,045 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.03 02:37:42" (1/1) ... [2022-03-01 14:37:42,045 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.03 02:37:42" (1/1) ... [2022-03-01 14:37:42,047 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.03 02:37:42" (1/1) ... [2022-03-01 14:37:42,047 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.03 02:37:42" (1/1) ... [2022-03-01 14:37:42,050 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.03 02:37:42" (1/1) ... [2022-03-01 14:37:42,054 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.03 02:37:42" (1/1) ... [2022-03-01 14:37:42,055 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.03 02:37:42" (1/1) ... [2022-03-01 14:37:42,056 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-03-01 14:37:42,057 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-03-01 14:37:42,057 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-03-01 14:37:42,057 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-03-01 14:37:42,058 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.03 02:37:42" (1/1) ... [2022-03-01 14:37:42,069 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-03-01 14:37:42,075 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 14:37:42,088 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-03-01 14:37:42,099 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-03-01 14:37:42,117 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2022-03-01 14:37:42,118 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2022-03-01 14:37:42,118 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-03-01 14:37:42,118 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-03-01 14:37:42,118 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-03-01 14:37:42,118 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-03-01 14:37:42,118 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-03-01 14:37:42,118 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-03-01 14:37:42,118 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-03-01 14:37:42,119 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-03-01 14:37:42,180 INFO L234 CfgBuilder]: Building ICFG [2022-03-01 14:37:42,181 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-03-01 14:37:42,330 INFO L275 CfgBuilder]: Performing block encoding [2022-03-01 14:37:42,335 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-03-01 14:37:42,335 INFO L299 CfgBuilder]: Removed 10 assume(true) statements. [2022-03-01 14:37:42,336 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.03 02:37:42 BoogieIcfgContainer [2022-03-01 14:37:42,336 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-03-01 14:37:42,337 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-03-01 14:37:42,337 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-03-01 14:37:42,348 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-03-01 14:37:42,348 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.03 02:37:41" (1/3) ... [2022-03-01 14:37:42,349 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6b53e0d9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.03 02:37:42, skipping insertion in model container [2022-03-01 14:37:42,349 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.03 02:37:42" (2/3) ... [2022-03-01 14:37:42,349 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6b53e0d9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.03 02:37:42, skipping insertion in model container [2022-03-01 14:37:42,349 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.03 02:37:42" (3/3) ... [2022-03-01 14:37:42,350 INFO L111 eAbstractionObserver]: Analyzing ICFG 17_szymanski.i [2022-03-01 14:37:42,353 WARN L150 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-03-01 14:37:42,354 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-03-01 14:37:42,354 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-03-01 14:37:42,354 INFO L534 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-03-01 14:37:42,378 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 14:37:42,378 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 14:37:42,378 WARN L322 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 14:37:42,378 WARN L322 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 14:37:42,378 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 14:37:42,378 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 14:37:42,379 WARN L322 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 14:37:42,379 WARN L322 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 14:37:42,379 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 14:37:42,379 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 14:37:42,379 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 14:37:42,379 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 14:37:42,383 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 14:37:42,383 WARN L322 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 14:37:42,383 WARN L322 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 14:37:42,383 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 14:37:42,385 INFO L148 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-03-01 14:37:42,410 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-03-01 14:37:42,426 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, mLazyFiniteAutomaton=false, 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, mMcrOptimizeForkJoin=true, mMcrOverapproximateWrwc=true [2022-03-01 14:37:42,426 INFO L340 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2022-03-01 14:37:42,433 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 77 places, 97 transitions, 199 flow [2022-03-01 14:37:42,485 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 667 states, 664 states have (on average 2.852409638554217) internal successors, (1894), 666 states have internal predecessors, (1894), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 14:37:42,489 INFO L276 IsEmpty]: Start isEmpty. Operand has 667 states, 664 states have (on average 2.852409638554217) internal successors, (1894), 666 states have internal predecessors, (1894), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 14:37:42,495 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2022-03-01 14:37:42,495 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 14:37:42,495 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] [2022-03-01 14:37:42,496 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION (and 1 more)] === [2022-03-01 14:37:42,499 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 14:37:42,499 INFO L85 PathProgramCache]: Analyzing trace with hash 1122267577, now seen corresponding path program 1 times [2022-03-01 14:37:42,505 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 14:37:42,505 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [965493065] [2022-03-01 14:37:42,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 14:37:42,505 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 14:37:42,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 14:37:42,616 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 14:37:42,617 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 14:37:42,617 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [965493065] [2022-03-01 14:37:42,617 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [965493065] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 14:37:42,617 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 14:37:42,618 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-03-01 14:37:42,619 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1495078856] [2022-03-01 14:37:42,619 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 14:37:42,622 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-03-01 14:37:42,622 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 14:37:42,638 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-03-01 14:37:42,638 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-03-01 14:37:42,641 INFO L87 Difference]: Start difference. First operand has 667 states, 664 states have (on average 2.852409638554217) internal successors, (1894), 666 states have internal predecessors, (1894), 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 15.5) internal successors, (31), 2 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 14:37:42,663 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 14:37:42,663 INFO L93 Difference]: Finished difference Result 372 states and 914 transitions. [2022-03-01 14:37:42,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-03-01 14:37:42,665 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 15.5) internal successors, (31), 2 states have internal predecessors, (31), 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 31 [2022-03-01 14:37:42,665 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 14:37:42,673 INFO L225 Difference]: With dead ends: 372 [2022-03-01 14:37:42,674 INFO L226 Difference]: Without dead ends: 372 [2022-03-01 14:37:42,675 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 [2022-03-01 14:37:42,677 INFO L933 BasicCegarLoop]: 67 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 67 SdHoareTripleChecker+Invalid, 1 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-01 14:37:42,677 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 67 Invalid, 1 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-01 14:37:42,690 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 372 states. [2022-03-01 14:37:42,717 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 372 to 372. [2022-03-01 14:37:42,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 372 states, 371 states have (on average 2.463611859838275) internal successors, (914), 371 states have internal predecessors, (914), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 14:37:42,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 372 states to 372 states and 914 transitions. [2022-03-01 14:37:42,722 INFO L78 Accepts]: Start accepts. Automaton has 372 states and 914 transitions. Word has length 31 [2022-03-01 14:37:42,723 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 14:37:42,723 INFO L470 AbstractCegarLoop]: Abstraction has 372 states and 914 transitions. [2022-03-01 14:37:42,723 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 15.5) internal successors, (31), 2 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 14:37:42,723 INFO L276 IsEmpty]: Start isEmpty. Operand 372 states and 914 transitions. [2022-03-01 14:37:42,724 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2022-03-01 14:37:42,724 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 14:37:42,724 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] [2022-03-01 14:37:42,724 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-03-01 14:37:42,724 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION (and 1 more)] === [2022-03-01 14:37:42,725 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 14:37:42,725 INFO L85 PathProgramCache]: Analyzing trace with hash -1429889384, now seen corresponding path program 1 times [2022-03-01 14:37:42,725 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 14:37:42,725 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1886276951] [2022-03-01 14:37:42,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 14:37:42,726 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 14:37:42,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 14:37:42,774 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 14:37:42,774 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 14:37:42,774 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1886276951] [2022-03-01 14:37:42,774 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1886276951] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 14:37:42,775 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 14:37:42,775 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-03-01 14:37:42,775 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1302495002] [2022-03-01 14:37:42,775 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 14:37:42,776 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-03-01 14:37:42,776 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 14:37:42,776 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-03-01 14:37:42,776 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-03-01 14:37:42,777 INFO L87 Difference]: Start difference. First operand 372 states and 914 transitions. Second operand has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 14:37:42,799 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 14:37:42,799 INFO L93 Difference]: Finished difference Result 563 states and 1427 transitions. [2022-03-01 14:37:42,800 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-03-01 14:37:42,800 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 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 31 [2022-03-01 14:37:42,800 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 14:37:42,804 INFO L225 Difference]: With dead ends: 563 [2022-03-01 14:37:42,804 INFO L226 Difference]: Without dead ends: 563 [2022-03-01 14:37:42,804 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-03-01 14:37:42,805 INFO L933 BasicCegarLoop]: 70 mSDtfsCounter, 52 mSDsluCounter, 45 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 115 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-01 14:37:42,805 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [52 Valid, 115 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-01 14:37:42,807 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 563 states. [2022-03-01 14:37:42,820 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 563 to 385. [2022-03-01 14:37:42,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 385 states, 384 states have (on average 2.4713541666666665) internal successors, (949), 384 states have internal predecessors, (949), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 14:37:42,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 385 states to 385 states and 949 transitions. [2022-03-01 14:37:42,823 INFO L78 Accepts]: Start accepts. Automaton has 385 states and 949 transitions. Word has length 31 [2022-03-01 14:37:42,823 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 14:37:42,823 INFO L470 AbstractCegarLoop]: Abstraction has 385 states and 949 transitions. [2022-03-01 14:37:42,823 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 14:37:42,824 INFO L276 IsEmpty]: Start isEmpty. Operand 385 states and 949 transitions. [2022-03-01 14:37:42,825 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2022-03-01 14:37:42,825 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 14:37:42,825 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] [2022-03-01 14:37:42,825 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-03-01 14:37:42,825 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION (and 1 more)] === [2022-03-01 14:37:42,826 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 14:37:42,826 INFO L85 PathProgramCache]: Analyzing trace with hash -257500694, now seen corresponding path program 1 times [2022-03-01 14:37:42,826 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 14:37:42,826 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [811212671] [2022-03-01 14:37:42,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 14:37:42,827 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 14:37:42,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 14:37:42,864 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 14:37:42,864 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 14:37:42,864 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [811212671] [2022-03-01 14:37:42,865 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [811212671] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 14:37:42,865 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 14:37:42,865 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-03-01 14:37:42,865 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1587111477] [2022-03-01 14:37:42,865 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 14:37:42,865 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-03-01 14:37:42,865 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 14:37:42,866 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-03-01 14:37:42,866 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-03-01 14:37:42,866 INFO L87 Difference]: Start difference. First operand 385 states and 949 transitions. Second operand has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 14:37:42,884 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 14:37:42,884 INFO L93 Difference]: Finished difference Result 531 states and 1340 transitions. [2022-03-01 14:37:42,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-03-01 14:37:42,885 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 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 37 [2022-03-01 14:37:42,885 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 14:37:42,887 INFO L225 Difference]: With dead ends: 531 [2022-03-01 14:37:42,887 INFO L226 Difference]: Without dead ends: 531 [2022-03-01 14:37:42,888 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-03-01 14:37:42,889 INFO L933 BasicCegarLoop]: 97 mSDtfsCounter, 36 mSDsluCounter, 60 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 156 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-01 14:37:42,889 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [36 Valid, 156 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-01 14:37:42,890 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 531 states. [2022-03-01 14:37:42,900 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 531 to 377. [2022-03-01 14:37:42,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 377 states, 377 states have (on average 2.4084880636604775) internal successors, (908), 376 states have internal predecessors, (908), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 14:37:42,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 377 states to 377 states and 908 transitions. [2022-03-01 14:37:42,902 INFO L78 Accepts]: Start accepts. Automaton has 377 states and 908 transitions. Word has length 37 [2022-03-01 14:37:42,902 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 14:37:42,902 INFO L470 AbstractCegarLoop]: Abstraction has 377 states and 908 transitions. [2022-03-01 14:37:42,903 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 14:37:42,903 INFO L276 IsEmpty]: Start isEmpty. Operand 377 states and 908 transitions. [2022-03-01 14:37:42,904 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2022-03-01 14:37:42,904 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 14:37:42,905 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] [2022-03-01 14:37:42,905 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-03-01 14:37:42,905 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION (and 1 more)] === [2022-03-01 14:37:42,905 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 14:37:42,906 INFO L85 PathProgramCache]: Analyzing trace with hash 2147086769, now seen corresponding path program 1 times [2022-03-01 14:37:42,906 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 14:37:42,906 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1427611625] [2022-03-01 14:37:42,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 14:37:42,906 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 14:37:42,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 14:37:42,945 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 14:37:42,945 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 14:37:42,945 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1427611625] [2022-03-01 14:37:42,945 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1427611625] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 14:37:42,945 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 14:37:42,945 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-03-01 14:37:42,946 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [264671748] [2022-03-01 14:37:42,946 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 14:37:42,946 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-03-01 14:37:42,946 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 14:37:42,947 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-03-01 14:37:42,947 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-03-01 14:37:42,947 INFO L87 Difference]: Start difference. First operand 377 states and 908 transitions. Second operand has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 14:37:42,977 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 14:37:42,977 INFO L93 Difference]: Finished difference Result 374 states and 880 transitions. [2022-03-01 14:37:42,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-03-01 14:37:42,978 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 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 46 [2022-03-01 14:37:42,978 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 14:37:42,980 INFO L225 Difference]: With dead ends: 374 [2022-03-01 14:37:42,980 INFO L226 Difference]: Without dead ends: 374 [2022-03-01 14:37:42,980 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-03-01 14:37:42,981 INFO L933 BasicCegarLoop]: 94 mSDtfsCounter, 27 mSDsluCounter, 44 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 137 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-01 14:37:42,981 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [27 Valid, 137 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-01 14:37:42,983 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 374 states. [2022-03-01 14:37:42,989 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 374 to 374. [2022-03-01 14:37:42,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 374 states, 374 states have (on average 2.3529411764705883) internal successors, (880), 373 states have internal predecessors, (880), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 14:37:42,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 374 states to 374 states and 880 transitions. [2022-03-01 14:37:42,994 INFO L78 Accepts]: Start accepts. Automaton has 374 states and 880 transitions. Word has length 46 [2022-03-01 14:37:42,994 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 14:37:42,994 INFO L470 AbstractCegarLoop]: Abstraction has 374 states and 880 transitions. [2022-03-01 14:37:42,995 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 14:37:42,995 INFO L276 IsEmpty]: Start isEmpty. Operand 374 states and 880 transitions. [2022-03-01 14:37:42,996 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2022-03-01 14:37:42,996 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 14:37:42,996 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] [2022-03-01 14:37:42,997 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-03-01 14:37:42,997 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION (and 1 more)] === [2022-03-01 14:37:42,997 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 14:37:42,997 INFO L85 PathProgramCache]: Analyzing trace with hash -1151640413, now seen corresponding path program 1 times [2022-03-01 14:37:42,997 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 14:37:42,998 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [353299763] [2022-03-01 14:37:42,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 14:37:42,998 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 14:37:43,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 14:37:43,031 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 14:37:43,032 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 14:37:43,032 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [353299763] [2022-03-01 14:37:43,032 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [353299763] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 14:37:43,032 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 14:37:43,032 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-03-01 14:37:43,032 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1719479390] [2022-03-01 14:37:43,033 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 14:37:43,033 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-03-01 14:37:43,033 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 14:37:43,033 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-03-01 14:37:43,034 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-03-01 14:37:43,034 INFO L87 Difference]: Start difference. First operand 374 states and 880 transitions. Second operand has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 14:37:43,061 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 14:37:43,061 INFO L93 Difference]: Finished difference Result 403 states and 935 transitions. [2022-03-01 14:37:43,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-03-01 14:37:43,062 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 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 46 [2022-03-01 14:37:43,062 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 14:37:43,063 INFO L225 Difference]: With dead ends: 403 [2022-03-01 14:37:43,064 INFO L226 Difference]: Without dead ends: 403 [2022-03-01 14:37:43,064 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-03-01 14:37:43,065 INFO L933 BasicCegarLoop]: 90 mSDtfsCounter, 28 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 131 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-01 14:37:43,065 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [28 Valid, 131 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-01 14:37:43,066 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 403 states. [2022-03-01 14:37:43,072 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 403 to 392. [2022-03-01 14:37:43,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 392 states, 392 states have (on average 2.3239795918367347) internal successors, (911), 391 states have internal predecessors, (911), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 14:37:43,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 392 states to 392 states and 911 transitions. [2022-03-01 14:37:43,074 INFO L78 Accepts]: Start accepts. Automaton has 392 states and 911 transitions. Word has length 46 [2022-03-01 14:37:43,074 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 14:37:43,074 INFO L470 AbstractCegarLoop]: Abstraction has 392 states and 911 transitions. [2022-03-01 14:37:43,074 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 14:37:43,075 INFO L276 IsEmpty]: Start isEmpty. Operand 392 states and 911 transitions. [2022-03-01 14:37:43,076 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2022-03-01 14:37:43,076 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 14:37:43,076 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] [2022-03-01 14:37:43,076 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-03-01 14:37:43,076 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION (and 1 more)] === [2022-03-01 14:37:43,077 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 14:37:43,077 INFO L85 PathProgramCache]: Analyzing trace with hash 1008981599, now seen corresponding path program 2 times [2022-03-01 14:37:43,077 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 14:37:43,077 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1809805920] [2022-03-01 14:37:43,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 14:37:43,077 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 14:37:43,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 14:37:43,105 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 14:37:43,105 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 14:37:43,105 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1809805920] [2022-03-01 14:37:43,106 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1809805920] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 14:37:43,106 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 14:37:43,106 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-03-01 14:37:43,106 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1789598729] [2022-03-01 14:37:43,106 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 14:37:43,106 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-03-01 14:37:43,106 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 14:37:43,107 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-03-01 14:37:43,107 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-03-01 14:37:43,107 INFO L87 Difference]: Start difference. First operand 392 states and 911 transitions. Second operand has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 14:37:43,139 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 14:37:43,139 INFO L93 Difference]: Finished difference Result 392 states and 899 transitions. [2022-03-01 14:37:43,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-03-01 14:37:43,140 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 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 46 [2022-03-01 14:37:43,140 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 14:37:43,141 INFO L225 Difference]: With dead ends: 392 [2022-03-01 14:37:43,141 INFO L226 Difference]: Without dead ends: 392 [2022-03-01 14:37:43,142 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-03-01 14:37:43,142 INFO L933 BasicCegarLoop]: 88 mSDtfsCounter, 15 mSDsluCounter, 50 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 137 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-01 14:37:43,143 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [15 Valid, 137 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-01 14:37:43,144 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 392 states. [2022-03-01 14:37:43,149 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 392 to 392. [2022-03-01 14:37:43,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 392 states, 392 states have (on average 2.2933673469387754) internal successors, (899), 391 states have internal predecessors, (899), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 14:37:43,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 392 states to 392 states and 899 transitions. [2022-03-01 14:37:43,150 INFO L78 Accepts]: Start accepts. Automaton has 392 states and 899 transitions. Word has length 46 [2022-03-01 14:37:43,151 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 14:37:43,151 INFO L470 AbstractCegarLoop]: Abstraction has 392 states and 899 transitions. [2022-03-01 14:37:43,151 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 14:37:43,151 INFO L276 IsEmpty]: Start isEmpty. Operand 392 states and 899 transitions. [2022-03-01 14:37:43,152 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2022-03-01 14:37:43,152 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 14:37:43,152 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] [2022-03-01 14:37:43,152 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-03-01 14:37:43,152 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION (and 1 more)] === [2022-03-01 14:37:43,153 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 14:37:43,153 INFO L85 PathProgramCache]: Analyzing trace with hash 764073887, now seen corresponding path program 3 times [2022-03-01 14:37:43,153 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 14:37:43,153 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1378378327] [2022-03-01 14:37:43,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 14:37:43,153 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 14:37:43,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 14:37:43,191 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 14:37:43,191 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 14:37:43,191 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1378378327] [2022-03-01 14:37:43,191 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1378378327] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 14:37:43,191 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 14:37:43,192 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-03-01 14:37:43,192 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1444112669] [2022-03-01 14:37:43,192 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 14:37:43,192 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-03-01 14:37:43,192 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 14:37:43,193 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-03-01 14:37:43,193 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-03-01 14:37:43,193 INFO L87 Difference]: Start difference. First operand 392 states and 899 transitions. Second operand has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 14:37:43,217 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 14:37:43,217 INFO L93 Difference]: Finished difference Result 351 states and 798 transitions. [2022-03-01 14:37:43,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-03-01 14:37:43,218 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 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 46 [2022-03-01 14:37:43,218 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 14:37:43,218 INFO L225 Difference]: With dead ends: 351 [2022-03-01 14:37:43,218 INFO L226 Difference]: Without dead ends: 0 [2022-03-01 14:37:43,218 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-03-01 14:37:43,219 INFO L933 BasicCegarLoop]: 86 mSDtfsCounter, 32 mSDsluCounter, 40 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 125 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-01 14:37:43,219 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [32 Valid, 125 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-01 14:37:43,220 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-03-01 14:37:43,220 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-03-01 14:37:43,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 14:37:43,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-03-01 14:37:43,220 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 46 [2022-03-01 14:37:43,220 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 14:37:43,220 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-03-01 14:37:43,220 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 14:37:43,220 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-03-01 14:37:43,221 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-03-01 14:37:43,222 INFO L764 garLoopResultBuilder]: Registering result SAFE for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (3 of 4 remaining) [2022-03-01 14:37:43,223 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 4 remaining) [2022-03-01 14:37:43,223 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATION (1 of 4 remaining) [2022-03-01 14:37:43,223 INFO L764 garLoopResultBuilder]: Registering result SAFE for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 4 remaining) [2022-03-01 14:37:43,223 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-03-01 14:37:43,225 INFO L732 BasicCegarLoop]: Path program histogram: [3, 1, 1, 1, 1] [2022-03-01 14:37:43,227 INFO L230 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-03-01 14:37:43,227 INFO L180 ceAbstractionStarter]: Computing trace abstraction results [2022-03-01 14:37:43,229 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 01.03 02:37:43 BasicIcfg [2022-03-01 14:37:43,229 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-03-01 14:37:43,230 INFO L158 Benchmark]: Toolchain (without parser) took 1592.46ms. Allocated memory was 169.9MB in the beginning and 289.4MB in the end (delta: 119.5MB). Free memory was 113.0MB in the beginning and 121.2MB in the end (delta: -8.2MB). Peak memory consumption was 110.2MB. Max. memory is 8.0GB. [2022-03-01 14:37:43,230 INFO L158 Benchmark]: CDTParser took 0.09ms. Allocated memory is still 169.9MB. Free memory was 130.3MB in the beginning and 130.1MB in the end (delta: 136.4kB). There was no memory consumed. Max. memory is 8.0GB. [2022-03-01 14:37:43,230 INFO L158 Benchmark]: CACSL2BoogieTranslator took 367.49ms. Allocated memory was 169.9MB in the beginning and 289.4MB in the end (delta: 119.5MB). Free memory was 112.8MB in the beginning and 253.3MB in the end (delta: -140.5MB). Peak memory consumption was 17.1MB. Max. memory is 8.0GB. [2022-03-01 14:37:43,231 INFO L158 Benchmark]: Boogie Procedure Inliner took 31.48ms. Allocated memory is still 289.4MB. Free memory was 253.3MB in the beginning and 251.6MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-03-01 14:37:43,231 INFO L158 Benchmark]: Boogie Preprocessor took 16.89ms. Allocated memory is still 289.4MB. Free memory was 251.6MB in the beginning and 250.1MB in the end (delta: 1.5MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-03-01 14:37:43,231 INFO L158 Benchmark]: RCFGBuilder took 279.33ms. Allocated memory is still 289.4MB. Free memory was 250.1MB in the beginning and 236.5MB in the end (delta: 13.6MB). Peak memory consumption was 13.6MB. Max. memory is 8.0GB. [2022-03-01 14:37:43,231 INFO L158 Benchmark]: TraceAbstraction took 891.96ms. Allocated memory is still 289.4MB. Free memory was 236.0MB in the beginning and 121.2MB in the end (delta: 114.8MB). Peak memory consumption was 114.3MB. Max. memory is 8.0GB. [2022-03-01 14:37:43,232 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.09ms. Allocated memory is still 169.9MB. Free memory was 130.3MB in the beginning and 130.1MB in the end (delta: 136.4kB). There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 367.49ms. Allocated memory was 169.9MB in the beginning and 289.4MB in the end (delta: 119.5MB). Free memory was 112.8MB in the beginning and 253.3MB in the end (delta: -140.5MB). Peak memory consumption was 17.1MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 31.48ms. Allocated memory is still 289.4MB. Free memory was 253.3MB in the beginning and 251.6MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 16.89ms. Allocated memory is still 289.4MB. Free memory was 251.6MB in the beginning and 250.1MB in the end (delta: 1.5MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 279.33ms. Allocated memory is still 289.4MB. Free memory was 250.1MB in the beginning and 236.5MB in the end (delta: 13.6MB). Peak memory consumption was 13.6MB. Max. memory is 8.0GB. * TraceAbstraction took 891.96ms. Allocated memory is still 289.4MB. Free memory was 236.0MB in the beginning and 121.2MB in the end (delta: 114.8MB). Peak memory consumption was 114.3MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 698]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 716]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 3 procedures, 95 locations, 4 error locations. Started 1 CEGAR loops. OverallTime: 0.8s, OverallIterations: 7, TraceHistogramMax: 1, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 190 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 190 mSDsluCounter, 868 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 281 mSDsCounter, 24 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 109 IncrementalHoareTripleChecker+Invalid, 133 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 24 mSolverCounterUnsat, 592 mSDtfsCounter, 109 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 20 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=667occurred in iteration=0, InterpolantAutomatonStates: 20, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 7 MinimizatonAttempts, 343 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 283 NumberOfCodeBlocks, 283 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 276 ConstructedInterpolants, 0 QuantifiedInterpolants, 360 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 7 InterpolantComputations, 7 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 2 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2022-03-01 14:37:43,256 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...