/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/pthread/triangular-longest-1.i -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-bc79526 [2022-01-17 22:37:03,658 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-17 22:37:03,660 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-17 22:37:03,718 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-01-17 22:37:03,771 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-17 22:37:03,777 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-17 22:37:03,779 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-17 22:37:03,780 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 [2022-01-17 22:37:03,809 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-17 22:37:03,809 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-17 22:37:03,809 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-17 22:37:03,809 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-17 22:37:03,810 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-01-17 22:37:03,810 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-01-17 22:37:03,811 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-17 22:37:03,811 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-17 22:37:03,811 INFO L138 SettingsManager]: * Use SBE=true [2022-01-17 22:37:03,811 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-17 22:37:03,812 INFO L138 SettingsManager]: * sizeof long=4 [2022-01-17 22:37:03,812 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-17 22:37:03,812 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-01-17 22:37:03,812 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-17 22:37:03,812 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-17 22:37:03,812 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-17 22:37:03,813 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-17 22:37:03,813 INFO L138 SettingsManager]: * sizeof long double=12 [2022-01-17 22:37:03,813 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-17 22:37:03,813 INFO L138 SettingsManager]: * Use constant arrays=true [2022-01-17 22:37:03,813 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-17 22:37:03,813 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-17 22:37:03,813 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-17 22:37:03,814 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-01-17 22:37:03,815 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-17 22:37:03,815 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-17 22:37:03,815 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-17 22:37:03,815 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-17 22:37:03,815 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-17 22:37:03,815 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-17 22:37:03,816 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-17 22:37:03,816 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-17 22:37:03,816 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-17 22:37:03,816 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-01-17 22:37:04,012 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-17 22:37:04,031 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-17 22:37:04,033 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-17 22:37:04,034 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-17 22:37:04,035 INFO L275 PluginConnector]: CDTParser initialized [2022-01-17 22:37:04,035 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread/triangular-longest-1.i [2022-01-17 22:37:04,083 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fc175c3d7/4b93a95abc444b9886bcfdfb89962352/FLAGa67b32a6d [2022-01-17 22:37:04,493 INFO L306 CDTParser]: Found 1 translation units. [2022-01-17 22:37:04,494 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread/triangular-longest-1.i [2022-01-17 22:37:04,515 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fc175c3d7/4b93a95abc444b9886bcfdfb89962352/FLAGa67b32a6d [2022-01-17 22:37:04,526 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fc175c3d7/4b93a95abc444b9886bcfdfb89962352 [2022-01-17 22:37:04,527 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-17 22:37:04,528 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-01-17 22:37:04,529 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-17 22:37:04,530 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-17 22:37:04,532 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-17 22:37:04,533 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.01 10:37:04" (1/1) ... [2022-01-17 22:37:04,534 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@56ba0dbf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.01 10:37:04, skipping insertion in model container [2022-01-17 22:37:04,534 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.01 10:37:04" (1/1) ... [2022-01-17 22:37:04,539 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-17 22:37:04,565 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-17 22:37:04,810 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/triangular-longest-1.i[30962,30975] [2022-01-17 22:37:04,814 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-17 22:37:04,820 INFO L203 MainTranslator]: Completed pre-run [2022-01-17 22:37:04,872 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/triangular-longest-1.i[30962,30975] [2022-01-17 22:37:04,873 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-17 22:37:04,907 INFO L208 MainTranslator]: Completed translation [2022-01-17 22:37:04,908 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.01 10:37:04 WrapperNode [2022-01-17 22:37:04,908 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-17 22:37:04,909 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-17 22:37:04,909 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-17 22:37:04,909 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-17 22:37:04,915 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.01 10:37:04" (1/1) ... [2022-01-17 22:37:04,940 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.01 10:37:04" (1/1) ... [2022-01-17 22:37:04,958 INFO L137 Inliner]: procedures = 169, calls = 24, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 47 [2022-01-17 22:37:04,959 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-17 22:37:04,959 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-17 22:37:04,959 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-17 22:37:04,959 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-17 22:37:04,965 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.01 10:37:04" (1/1) ... [2022-01-17 22:37:04,965 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.01 10:37:04" (1/1) ... [2022-01-17 22:37:04,971 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.01 10:37:04" (1/1) ... [2022-01-17 22:37:04,972 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.01 10:37:04" (1/1) ... [2022-01-17 22:37:04,985 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.01 10:37:04" (1/1) ... [2022-01-17 22:37:04,988 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.01 10:37:04" (1/1) ... [2022-01-17 22:37:04,989 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.01 10:37:04" (1/1) ... [2022-01-17 22:37:04,991 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-17 22:37:04,992 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-17 22:37:04,992 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-17 22:37:04,992 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-17 22:37:04,993 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.01 10:37:04" (1/1) ... [2022-01-17 22:37:05,003 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-17 22:37:05,012 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-17 22:37:05,021 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) [2022-01-17 22:37:05,022 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 [2022-01-17 22:37:05,046 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2022-01-17 22:37:05,046 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2022-01-17 22:37:05,046 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2022-01-17 22:37:05,046 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2022-01-17 22:37:05,046 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-01-17 22:37:05,046 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-01-17 22:37:05,047 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-17 22:37:05,047 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-01-17 22:37:05,047 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-01-17 22:37:05,047 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-01-17 22:37:05,047 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-01-17 22:37:05,047 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-17 22:37:05,047 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-17 22:37:05,048 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-01-17 22:37:05,153 INFO L234 CfgBuilder]: Building ICFG [2022-01-17 22:37:05,154 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-17 22:37:05,301 INFO L275 CfgBuilder]: Performing block encoding [2022-01-17 22:37:05,307 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-17 22:37:05,307 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2022-01-17 22:37:05,308 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.01 10:37:05 BoogieIcfgContainer [2022-01-17 22:37:05,308 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-17 22:37:05,309 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-17 22:37:05,310 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-17 22:37:05,312 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-17 22:37:05,312 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.01 10:37:04" (1/3) ... [2022-01-17 22:37:05,313 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5a3326ca and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.01 10:37:05, skipping insertion in model container [2022-01-17 22:37:05,313 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.01 10:37:04" (2/3) ... [2022-01-17 22:37:05,313 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5a3326ca and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.01 10:37:05, skipping insertion in model container [2022-01-17 22:37:05,313 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.01 10:37:05" (3/3) ... [2022-01-17 22:37:05,314 INFO L111 eAbstractionObserver]: Analyzing ICFG triangular-longest-1.i [2022-01-17 22:37:05,317 WARN L149 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-01-17 22:37:05,317 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-17 22:37:05,317 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-17 22:37:05,317 INFO L513 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-01-17 22:37:05,338 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-17 22:37:05,339 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-17 22:37:05,339 WARN L322 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-17 22:37:05,339 WARN L322 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-17 22:37:05,339 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-17 22:37:05,339 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-17 22:37:05,339 WARN L322 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-17 22:37:05,340 WARN L322 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-17 22:37:05,340 WARN L322 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-17 22:37:05,340 WARN L322 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-17 22:37:05,340 WARN L322 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-17 22:37:05,341 WARN L322 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-17 22:37:05,341 WARN L322 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-17 22:37:05,341 WARN L322 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-17 22:37:05,341 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-17 22:37:05,341 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-17 22:37:05,342 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-17 22:37:05,342 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-17 22:37:05,342 WARN L322 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-17 22:37:05,342 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-17 22:37:05,342 WARN L322 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-17 22:37:05,342 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-17 22:37:05,343 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-17 22:37:05,343 WARN L322 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-17 22:37:05,343 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-17 22:37:05,343 WARN L322 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-17 22:37:05,343 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-17 22:37:05,344 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-17 22:37:05,344 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-17 22:37:05,344 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-17 22:37:05,344 WARN L322 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-17 22:37:05,344 WARN L322 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-17 22:37:05,344 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-17 22:37:05,345 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-17 22:37:05,345 WARN L322 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-17 22:37:05,345 WARN L322 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-17 22:37:05,345 WARN L322 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-17 22:37:05,345 WARN L322 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-17 22:37:05,345 WARN L322 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-17 22:37:05,346 WARN L322 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-17 22:37:05,346 WARN L322 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-17 22:37:05,346 WARN L322 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-17 22:37:05,346 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-17 22:37:05,346 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-17 22:37:05,347 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-17 22:37:05,347 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-17 22:37:05,347 WARN L322 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-17 22:37:05,347 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-17 22:37:05,347 WARN L322 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-17 22:37:05,348 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-17 22:37:05,348 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-17 22:37:05,348 WARN L322 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-17 22:37:05,348 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-17 22:37:05,348 WARN L322 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-17 22:37:05,349 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-17 22:37:05,349 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-17 22:37:05,351 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-17 22:37:05,352 WARN L322 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-17 22:37:05,352 WARN L322 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-17 22:37:05,352 WARN L322 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-17 22:37:05,352 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-17 22:37:05,352 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-17 22:37:05,354 WARN L322 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-17 22:37:05,354 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-17 22:37:05,354 WARN L322 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-17 22:37:05,355 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-17 22:37:05,355 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-17 22:37:05,355 WARN L322 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-17 22:37:05,355 INFO L148 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-01-17 22:37:05,386 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-17 22:37:05,392 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 [2022-01-17 22:37:05,392 INFO L340 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2022-01-17 22:37:05,399 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 72 places, 70 transitions, 150 flow [2022-01-17 22:37:05,480 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 783 states, 782 states have (on average 2.9271099744245523) internal successors, (2289), 782 states have internal predecessors, (2289), 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) [2022-01-17 22:37:05,485 INFO L276 IsEmpty]: Start isEmpty. Operand has 783 states, 782 states have (on average 2.9271099744245523) internal successors, (2289), 782 states have internal predecessors, (2289), 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) [2022-01-17 22:37:05,495 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2022-01-17 22:37:05,495 INFO L506 BasicCegarLoop]: Found error trace [2022-01-17 22:37:05,496 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] [2022-01-17 22:37:05,496 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-17 22:37:05,500 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-17 22:37:05,500 INFO L85 PathProgramCache]: Analyzing trace with hash 398220865, now seen corresponding path program 1 times [2022-01-17 22:37:05,508 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-17 22:37:05,508 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1637425660] [2022-01-17 22:37:05,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-17 22:37:05,509 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-17 22:37:05,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-17 22:37:05,851 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-17 22:37:05,852 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-17 22:37:05,852 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1637425660] [2022-01-17 22:37:05,853 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1637425660] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-17 22:37:05,854 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-17 22:37:05,856 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-17 22:37:05,862 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1305998765] [2022-01-17 22:37:05,863 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-17 22:37:05,866 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-17 22:37:05,866 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-17 22:37:05,898 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-17 22:37:05,899 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-01-17 22:37:05,902 INFO L87 Difference]: Start difference. First operand has 783 states, 782 states have (on average 2.9271099744245523) internal successors, (2289), 782 states have internal predecessors, (2289), 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 6 states, 6 states have (on average 5.833333333333333) internal successors, (35), 6 states have internal predecessors, (35), 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) [2022-01-17 22:37:06,026 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-17 22:37:06,026 INFO L93 Difference]: Finished difference Result 1542 states and 4129 transitions. [2022-01-17 22:37:06,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-01-17 22:37:06,029 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 5.833333333333333) internal successors, (35), 6 states have internal predecessors, (35), 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 35 [2022-01-17 22:37:06,029 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-17 22:37:06,050 INFO L225 Difference]: With dead ends: 1542 [2022-01-17 22:37:06,050 INFO L226 Difference]: Without dead ends: 1245 [2022-01-17 22:37:06,051 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2022-01-17 22:37:06,054 INFO L933 BasicCegarLoop]: 84 mSDtfsCounter, 156 mSDsluCounter, 224 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 156 SdHoareTripleChecker+Valid, 303 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-17 22:37:06,055 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [156 Valid, 303 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 52 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-17 22:37:06,071 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1245 states. [2022-01-17 22:37:06,135 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1245 to 945. [2022-01-17 22:37:06,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 945 states, 944 states have (on average 2.702330508474576) internal successors, (2551), 944 states have internal predecessors, (2551), 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) [2022-01-17 22:37:06,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 945 states to 945 states and 2551 transitions. [2022-01-17 22:37:06,144 INFO L78 Accepts]: Start accepts. Automaton has 945 states and 2551 transitions. Word has length 35 [2022-01-17 22:37:06,144 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-17 22:37:06,144 INFO L470 AbstractCegarLoop]: Abstraction has 945 states and 2551 transitions. [2022-01-17 22:37:06,144 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 5.833333333333333) internal successors, (35), 6 states have internal predecessors, (35), 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) [2022-01-17 22:37:06,144 INFO L276 IsEmpty]: Start isEmpty. Operand 945 states and 2551 transitions. [2022-01-17 22:37:06,149 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2022-01-17 22:37:06,149 INFO L506 BasicCegarLoop]: Found error trace [2022-01-17 22:37:06,149 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] [2022-01-17 22:37:06,149 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-17 22:37:06,149 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-17 22:37:06,150 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-17 22:37:06,150 INFO L85 PathProgramCache]: Analyzing trace with hash 1832706688, now seen corresponding path program 1 times [2022-01-17 22:37:06,150 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-17 22:37:06,150 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [740232464] [2022-01-17 22:37:06,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-17 22:37:06,151 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-17 22:37:06,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-17 22:37:06,256 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-17 22:37:06,257 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-17 22:37:06,257 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [740232464] [2022-01-17 22:37:06,257 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [740232464] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-17 22:37:06,257 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-17 22:37:06,257 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-17 22:37:06,257 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2079376485] [2022-01-17 22:37:06,257 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-17 22:37:06,259 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-17 22:37:06,259 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-17 22:37:06,259 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-17 22:37:06,259 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-01-17 22:37:06,260 INFO L87 Difference]: Start difference. First operand 945 states and 2551 transitions. Second operand has 6 states, 6 states have (on average 6.5) internal successors, (39), 6 states have internal predecessors, (39), 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) [2022-01-17 22:37:06,333 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-17 22:37:06,333 INFO L93 Difference]: Finished difference Result 1197 states and 3183 transitions. [2022-01-17 22:37:06,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-17 22:37:06,334 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.5) internal successors, (39), 6 states have internal predecessors, (39), 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 39 [2022-01-17 22:37:06,334 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-17 22:37:06,339 INFO L225 Difference]: With dead ends: 1197 [2022-01-17 22:37:06,339 INFO L226 Difference]: Without dead ends: 945 [2022-01-17 22:37:06,339 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-17 22:37:06,340 INFO L933 BasicCegarLoop]: 97 mSDtfsCounter, 77 mSDsluCounter, 268 mSDsCounter, 0 mSdLazyCounter, 59 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 77 SdHoareTripleChecker+Valid, 357 SdHoareTripleChecker+Invalid, 62 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 59 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-17 22:37:06,341 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [77 Valid, 357 Invalid, 62 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 59 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-17 22:37:06,343 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 945 states. [2022-01-17 22:37:06,360 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 945 to 803. [2022-01-17 22:37:06,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 803 states, 802 states have (on average 2.7219451371571073) internal successors, (2183), 802 states have internal predecessors, (2183), 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) [2022-01-17 22:37:06,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 803 states to 803 states and 2183 transitions. [2022-01-17 22:37:06,365 INFO L78 Accepts]: Start accepts. Automaton has 803 states and 2183 transitions. Word has length 39 [2022-01-17 22:37:06,365 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-17 22:37:06,365 INFO L470 AbstractCegarLoop]: Abstraction has 803 states and 2183 transitions. [2022-01-17 22:37:06,366 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.5) internal successors, (39), 6 states have internal predecessors, (39), 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) [2022-01-17 22:37:06,366 INFO L276 IsEmpty]: Start isEmpty. Operand 803 states and 2183 transitions. [2022-01-17 22:37:06,367 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2022-01-17 22:37:06,367 INFO L506 BasicCegarLoop]: Found error trace [2022-01-17 22:37:06,368 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] [2022-01-17 22:37:06,368 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-17 22:37:06,368 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-17 22:37:06,368 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-17 22:37:06,368 INFO L85 PathProgramCache]: Analyzing trace with hash -1559123106, now seen corresponding path program 1 times [2022-01-17 22:37:06,369 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-17 22:37:06,369 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1379518676] [2022-01-17 22:37:06,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-17 22:37:06,369 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-17 22:37:06,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-17 22:37:06,459 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-17 22:37:06,459 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-17 22:37:06,459 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1379518676] [2022-01-17 22:37:06,459 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1379518676] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-17 22:37:06,459 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-17 22:37:06,460 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-17 22:37:06,460 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [659658595] [2022-01-17 22:37:06,460 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-17 22:37:06,460 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-17 22:37:06,460 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-17 22:37:06,461 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-17 22:37:06,461 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-01-17 22:37:06,461 INFO L87 Difference]: Start difference. First operand 803 states and 2183 transitions. Second operand has 6 states, 6 states have (on average 6.5) internal successors, (39), 6 states have internal predecessors, (39), 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) [2022-01-17 22:37:06,556 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-17 22:37:06,556 INFO L93 Difference]: Finished difference Result 1305 states and 3439 transitions. [2022-01-17 22:37:06,556 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-17 22:37:06,557 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.5) internal successors, (39), 6 states have internal predecessors, (39), 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 39 [2022-01-17 22:37:06,557 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-17 22:37:06,561 INFO L225 Difference]: With dead ends: 1305 [2022-01-17 22:37:06,561 INFO L226 Difference]: Without dead ends: 923 [2022-01-17 22:37:06,562 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2022-01-17 22:37:06,567 INFO L933 BasicCegarLoop]: 83 mSDtfsCounter, 131 mSDsluCounter, 258 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 131 SdHoareTripleChecker+Valid, 335 SdHoareTripleChecker+Invalid, 58 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-17 22:37:06,568 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [131 Valid, 335 Invalid, 58 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 52 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-17 22:37:06,571 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 923 states. [2022-01-17 22:37:06,588 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 923 to 867. [2022-01-17 22:37:06,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 867 states, 866 states have (on average 2.6824480369515014) internal successors, (2323), 866 states have internal predecessors, (2323), 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) [2022-01-17 22:37:06,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 867 states to 867 states and 2323 transitions. [2022-01-17 22:37:06,595 INFO L78 Accepts]: Start accepts. Automaton has 867 states and 2323 transitions. Word has length 39 [2022-01-17 22:37:06,595 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-17 22:37:06,596 INFO L470 AbstractCegarLoop]: Abstraction has 867 states and 2323 transitions. [2022-01-17 22:37:06,596 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.5) internal successors, (39), 6 states have internal predecessors, (39), 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) [2022-01-17 22:37:06,596 INFO L276 IsEmpty]: Start isEmpty. Operand 867 states and 2323 transitions. [2022-01-17 22:37:06,598 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2022-01-17 22:37:06,598 INFO L506 BasicCegarLoop]: Found error trace [2022-01-17 22:37:06,599 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] [2022-01-17 22:37:06,599 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-01-17 22:37:06,599 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-17 22:37:06,600 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-17 22:37:06,600 INFO L85 PathProgramCache]: Analyzing trace with hash -2144864227, now seen corresponding path program 1 times [2022-01-17 22:37:06,600 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-17 22:37:06,600 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1291663457] [2022-01-17 22:37:06,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-17 22:37:06,600 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-17 22:37:06,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-17 22:37:06,739 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-17 22:37:06,740 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-17 22:37:06,740 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1291663457] [2022-01-17 22:37:06,740 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1291663457] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-17 22:37:06,741 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-17 22:37:06,741 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-17 22:37:06,741 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1045063869] [2022-01-17 22:37:06,741 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-17 22:37:06,741 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-17 22:37:06,742 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-17 22:37:06,742 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-17 22:37:06,742 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-01-17 22:37:06,742 INFO L87 Difference]: Start difference. First operand 867 states and 2323 transitions. Second operand has 7 states, 7 states have (on average 6.142857142857143) internal successors, (43), 7 states have internal predecessors, (43), 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) [2022-01-17 22:37:06,860 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-17 22:37:06,860 INFO L93 Difference]: Finished difference Result 1403 states and 3715 transitions. [2022-01-17 22:37:06,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-01-17 22:37:06,861 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.142857142857143) internal successors, (43), 7 states have internal predecessors, (43), 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 43 [2022-01-17 22:37:06,862 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-17 22:37:06,867 INFO L225 Difference]: With dead ends: 1403 [2022-01-17 22:37:06,867 INFO L226 Difference]: Without dead ends: 1010 [2022-01-17 22:37:06,867 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2022-01-17 22:37:06,874 INFO L933 BasicCegarLoop]: 81 mSDtfsCounter, 204 mSDsluCounter, 297 mSDsCounter, 0 mSdLazyCounter, 58 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 204 SdHoareTripleChecker+Valid, 374 SdHoareTripleChecker+Invalid, 70 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 58 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-17 22:37:06,875 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [204 Valid, 374 Invalid, 70 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 58 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-17 22:37:06,879 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1010 states. [2022-01-17 22:37:06,895 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1010 to 868. [2022-01-17 22:37:06,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 868 states, 867 states have (on average 2.685121107266436) internal successors, (2328), 867 states have internal predecessors, (2328), 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) [2022-01-17 22:37:06,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 868 states to 868 states and 2328 transitions. [2022-01-17 22:37:06,901 INFO L78 Accepts]: Start accepts. Automaton has 868 states and 2328 transitions. Word has length 43 [2022-01-17 22:37:06,901 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-17 22:37:06,901 INFO L470 AbstractCegarLoop]: Abstraction has 868 states and 2328 transitions. [2022-01-17 22:37:06,901 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.142857142857143) internal successors, (43), 7 states have internal predecessors, (43), 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) [2022-01-17 22:37:06,902 INFO L276 IsEmpty]: Start isEmpty. Operand 868 states and 2328 transitions. [2022-01-17 22:37:06,904 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2022-01-17 22:37:06,904 INFO L506 BasicCegarLoop]: Found error trace [2022-01-17 22:37:06,904 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] [2022-01-17 22:37:06,904 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-01-17 22:37:06,904 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-17 22:37:06,905 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-17 22:37:06,905 INFO L85 PathProgramCache]: Analyzing trace with hash 996530891, now seen corresponding path program 2 times [2022-01-17 22:37:06,905 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-17 22:37:06,906 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [301132012] [2022-01-17 22:37:06,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-17 22:37:06,906 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-17 22:37:06,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-17 22:37:07,039 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-17 22:37:07,039 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-17 22:37:07,039 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [301132012] [2022-01-17 22:37:07,040 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [301132012] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-17 22:37:07,040 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-17 22:37:07,040 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-17 22:37:07,040 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1892739233] [2022-01-17 22:37:07,040 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-17 22:37:07,040 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-17 22:37:07,040 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-17 22:37:07,041 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-17 22:37:07,041 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-01-17 22:37:07,041 INFO L87 Difference]: Start difference. First operand 868 states and 2328 transitions. Second operand has 7 states, 7 states have (on average 6.142857142857143) internal successors, (43), 7 states have internal predecessors, (43), 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) [2022-01-17 22:37:07,125 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-17 22:37:07,125 INFO L93 Difference]: Finished difference Result 1454 states and 3822 transitions. [2022-01-17 22:37:07,125 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-17 22:37:07,125 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.142857142857143) internal successors, (43), 7 states have internal predecessors, (43), 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 43 [2022-01-17 22:37:07,126 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-17 22:37:07,131 INFO L225 Difference]: With dead ends: 1454 [2022-01-17 22:37:07,131 INFO L226 Difference]: Without dead ends: 1194 [2022-01-17 22:37:07,131 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2022-01-17 22:37:07,132 INFO L933 BasicCegarLoop]: 89 mSDtfsCounter, 121 mSDsluCounter, 232 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 121 SdHoareTripleChecker+Valid, 316 SdHoareTripleChecker+Invalid, 58 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-17 22:37:07,132 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [121 Valid, 316 Invalid, 58 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-17 22:37:07,135 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1194 states. [2022-01-17 22:37:07,178 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1194 to 1036. [2022-01-17 22:37:07,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1036 states, 1035 states have (on average 2.7304347826086954) internal successors, (2826), 1035 states have internal predecessors, (2826), 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) [2022-01-17 22:37:07,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1036 states to 1036 states and 2826 transitions. [2022-01-17 22:37:07,185 INFO L78 Accepts]: Start accepts. Automaton has 1036 states and 2826 transitions. Word has length 43 [2022-01-17 22:37:07,187 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-17 22:37:07,187 INFO L470 AbstractCegarLoop]: Abstraction has 1036 states and 2826 transitions. [2022-01-17 22:37:07,187 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.142857142857143) internal successors, (43), 7 states have internal predecessors, (43), 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) [2022-01-17 22:37:07,187 INFO L276 IsEmpty]: Start isEmpty. Operand 1036 states and 2826 transitions. [2022-01-17 22:37:07,189 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2022-01-17 22:37:07,189 INFO L506 BasicCegarLoop]: Found error trace [2022-01-17 22:37:07,189 INFO L514 BasicCegarLoop]: trace histogram [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] [2022-01-17 22:37:07,189 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-01-17 22:37:07,190 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-17 22:37:07,191 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-17 22:37:07,191 INFO L85 PathProgramCache]: Analyzing trace with hash -2080476017, now seen corresponding path program 1 times [2022-01-17 22:37:07,191 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-17 22:37:07,191 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1945172984] [2022-01-17 22:37:07,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-17 22:37:07,191 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-17 22:37:07,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-17 22:37:07,314 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-17 22:37:07,314 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-17 22:37:07,314 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1945172984] [2022-01-17 22:37:07,314 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1945172984] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-17 22:37:07,314 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [7952602] [2022-01-17 22:37:07,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-17 22:37:07,315 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-17 22:37:07,315 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-17 22:37:07,320 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) [2022-01-17 22:37:07,351 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-01-17 22:37:07,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-17 22:37:07,417 INFO L263 TraceCheckSpWp]: Trace formula consists of 136 conjuncts, 9 conjunts are in the unsatisfiable core [2022-01-17 22:37:07,422 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-17 22:37:07,649 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-17 22:37:07,650 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-17 22:37:07,828 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-17 22:37:07,828 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [7952602] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-17 22:37:07,828 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-17 22:37:07,828 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 13 [2022-01-17 22:37:07,828 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1739304402] [2022-01-17 22:37:07,828 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-17 22:37:07,829 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-01-17 22:37:07,829 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-17 22:37:07,829 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-01-17 22:37:07,829 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2022-01-17 22:37:07,830 INFO L87 Difference]: Start difference. First operand 1036 states and 2826 transitions. Second operand has 13 states, 13 states have (on average 6.615384615384615) internal successors, (86), 13 states have internal predecessors, (86), 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) [2022-01-17 22:37:08,123 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-17 22:37:08,123 INFO L93 Difference]: Finished difference Result 2380 states and 6538 transitions. [2022-01-17 22:37:08,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-01-17 22:37:08,124 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 6.615384615384615) internal successors, (86), 13 states have internal predecessors, (86), 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 48 [2022-01-17 22:37:08,124 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-17 22:37:08,129 INFO L225 Difference]: With dead ends: 2380 [2022-01-17 22:37:08,129 INFO L226 Difference]: Without dead ends: 1391 [2022-01-17 22:37:08,129 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 90 SyntacticMatches, 1 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 164 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=227, Invalid=529, Unknown=0, NotChecked=0, Total=756 [2022-01-17 22:37:08,130 INFO L933 BasicCegarLoop]: 81 mSDtfsCounter, 638 mSDsluCounter, 456 mSDsCounter, 0 mSdLazyCounter, 86 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 638 SdHoareTripleChecker+Valid, 533 SdHoareTripleChecker+Invalid, 142 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 86 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-17 22:37:08,130 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [638 Valid, 533 Invalid, 142 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [56 Valid, 86 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-17 22:37:08,132 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1391 states. [2022-01-17 22:37:08,152 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1391 to 1225. [2022-01-17 22:37:08,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1225 states, 1224 states have (on average 2.732843137254902) internal successors, (3345), 1224 states have internal predecessors, (3345), 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) [2022-01-17 22:37:08,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1225 states to 1225 states and 3345 transitions. [2022-01-17 22:37:08,158 INFO L78 Accepts]: Start accepts. Automaton has 1225 states and 3345 transitions. Word has length 48 [2022-01-17 22:37:08,158 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-17 22:37:08,158 INFO L470 AbstractCegarLoop]: Abstraction has 1225 states and 3345 transitions. [2022-01-17 22:37:08,158 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.615384615384615) internal successors, (86), 13 states have internal predecessors, (86), 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) [2022-01-17 22:37:08,158 INFO L276 IsEmpty]: Start isEmpty. Operand 1225 states and 3345 transitions. [2022-01-17 22:37:08,160 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-01-17 22:37:08,160 INFO L506 BasicCegarLoop]: Found error trace [2022-01-17 22:37:08,160 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 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] [2022-01-17 22:37:08,185 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-01-17 22:37:08,382 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2022-01-17 22:37:08,382 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-17 22:37:08,383 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-17 22:37:08,383 INFO L85 PathProgramCache]: Analyzing trace with hash 2080275648, now seen corresponding path program 1 times [2022-01-17 22:37:08,383 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-17 22:37:08,383 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [192298244] [2022-01-17 22:37:08,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-17 22:37:08,384 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-17 22:37:08,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-17 22:37:08,487 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-17 22:37:08,487 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-17 22:37:08,487 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [192298244] [2022-01-17 22:37:08,487 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [192298244] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-17 22:37:08,487 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1462421645] [2022-01-17 22:37:08,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-17 22:37:08,487 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-17 22:37:08,488 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-17 22:37:08,488 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) [2022-01-17 22:37:08,490 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-01-17 22:37:08,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-17 22:37:08,552 INFO L263 TraceCheckSpWp]: Trace formula consists of 160 conjuncts, 11 conjunts are in the unsatisfiable core [2022-01-17 22:37:08,555 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-17 22:37:08,714 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-17 22:37:08,715 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-17 22:37:08,905 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-17 22:37:08,906 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1462421645] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-17 22:37:08,906 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-17 22:37:08,906 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 17 [2022-01-17 22:37:08,906 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1227616904] [2022-01-17 22:37:08,906 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-17 22:37:08,907 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-01-17 22:37:08,907 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-17 22:37:08,907 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-01-17 22:37:08,907 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=210, Unknown=0, NotChecked=0, Total=272 [2022-01-17 22:37:08,907 INFO L87 Difference]: Start difference. First operand 1225 states and 3345 transitions. Second operand has 17 states, 17 states have (on average 6.882352941176471) internal successors, (117), 17 states have internal predecessors, (117), 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) [2022-01-17 22:37:09,505 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-17 22:37:09,506 INFO L93 Difference]: Finished difference Result 5394 states and 14706 transitions. [2022-01-17 22:37:09,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2022-01-17 22:37:09,507 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 6.882352941176471) internal successors, (117), 17 states have internal predecessors, (117), 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 63 [2022-01-17 22:37:09,508 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-17 22:37:09,523 INFO L225 Difference]: With dead ends: 5394 [2022-01-17 22:37:09,523 INFO L226 Difference]: Without dead ends: 3609 [2022-01-17 22:37:09,524 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 164 GetRequests, 119 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 569 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=603, Invalid=1559, Unknown=0, NotChecked=0, Total=2162 [2022-01-17 22:37:09,525 INFO L933 BasicCegarLoop]: 111 mSDtfsCounter, 827 mSDsluCounter, 961 mSDsCounter, 0 mSdLazyCounter, 190 mSolverCounterSat, 73 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 827 SdHoareTripleChecker+Valid, 1059 SdHoareTripleChecker+Invalid, 263 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 73 IncrementalHoareTripleChecker+Valid, 190 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-17 22:37:09,525 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [827 Valid, 1059 Invalid, 263 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [73 Valid, 190 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-17 22:37:09,530 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3609 states. [2022-01-17 22:37:09,585 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3609 to 2319. [2022-01-17 22:37:09,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2319 states, 2318 states have (on average 2.7791199309749786) internal successors, (6442), 2318 states have internal predecessors, (6442), 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) [2022-01-17 22:37:09,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2319 states to 2319 states and 6442 transitions. [2022-01-17 22:37:09,598 INFO L78 Accepts]: Start accepts. Automaton has 2319 states and 6442 transitions. Word has length 63 [2022-01-17 22:37:09,599 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-17 22:37:09,599 INFO L470 AbstractCegarLoop]: Abstraction has 2319 states and 6442 transitions. [2022-01-17 22:37:09,599 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 6.882352941176471) internal successors, (117), 17 states have internal predecessors, (117), 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) [2022-01-17 22:37:09,599 INFO L276 IsEmpty]: Start isEmpty. Operand 2319 states and 6442 transitions. [2022-01-17 22:37:09,604 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2022-01-17 22:37:09,604 INFO L506 BasicCegarLoop]: Found error trace [2022-01-17 22:37:09,604 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-17 22:37:09,627 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-01-17 22:37:09,826 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,SelfDestructingSolverStorable6 [2022-01-17 22:37:09,827 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-17 22:37:09,827 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-17 22:37:09,828 INFO L85 PathProgramCache]: Analyzing trace with hash 1595975090, now seen corresponding path program 2 times [2022-01-17 22:37:09,828 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-17 22:37:09,828 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [604608043] [2022-01-17 22:37:09,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-17 22:37:09,828 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-17 22:37:09,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-17 22:37:09,951 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 0 proven. 59 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-17 22:37:09,951 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-17 22:37:09,952 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [604608043] [2022-01-17 22:37:09,952 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [604608043] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-17 22:37:09,952 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [824069676] [2022-01-17 22:37:09,952 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-17 22:37:09,952 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-17 22:37:09,952 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-17 22:37:09,953 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) [2022-01-17 22:37:09,978 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-01-17 22:37:10,025 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-17 22:37:10,025 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-17 22:37:10,026 INFO L263 TraceCheckSpWp]: Trace formula consists of 184 conjuncts, 15 conjunts are in the unsatisfiable core [2022-01-17 22:37:10,028 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-17 22:37:10,204 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 0 proven. 59 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-17 22:37:10,205 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-17 22:37:10,513 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 0 proven. 59 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-17 22:37:10,514 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [824069676] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-17 22:37:10,514 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-17 22:37:10,514 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 14] total 26 [2022-01-17 22:37:10,514 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [524545860] [2022-01-17 22:37:10,514 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-17 22:37:10,515 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-01-17 22:37:10,515 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-17 22:37:10,516 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-01-17 22:37:10,516 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=148, Invalid=502, Unknown=0, NotChecked=0, Total=650 [2022-01-17 22:37:10,516 INFO L87 Difference]: Start difference. First operand 2319 states and 6442 transitions. Second operand has 26 states, 26 states have (on average 5.6923076923076925) internal successors, (148), 26 states have internal predecessors, (148), 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) [2022-01-17 22:37:11,606 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-17 22:37:11,606 INFO L93 Difference]: Finished difference Result 8273 states and 22742 transitions. [2022-01-17 22:37:11,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2022-01-17 22:37:11,607 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 5.6923076923076925) internal successors, (148), 26 states have internal predecessors, (148), 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 78 [2022-01-17 22:37:11,607 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-17 22:37:11,632 INFO L225 Difference]: With dead ends: 8273 [2022-01-17 22:37:11,632 INFO L226 Difference]: Without dead ends: 5284 [2022-01-17 22:37:11,634 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 215 GetRequests, 144 SyntacticMatches, 0 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1705 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=1473, Invalid=3783, Unknown=0, NotChecked=0, Total=5256 [2022-01-17 22:37:11,634 INFO L933 BasicCegarLoop]: 101 mSDtfsCounter, 1366 mSDsluCounter, 1176 mSDsCounter, 0 mSdLazyCounter, 213 mSolverCounterSat, 137 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1366 SdHoareTripleChecker+Valid, 1271 SdHoareTripleChecker+Invalid, 350 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 137 IncrementalHoareTripleChecker+Valid, 213 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-17 22:37:11,635 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1366 Valid, 1271 Invalid, 350 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [137 Valid, 213 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-17 22:37:11,642 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5284 states. [2022-01-17 22:37:11,722 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5284 to 2425. [2022-01-17 22:37:11,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2425 states, 2424 states have (on average 2.741336633663366) internal successors, (6645), 2424 states have internal predecessors, (6645), 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) [2022-01-17 22:37:11,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2425 states to 2425 states and 6645 transitions. [2022-01-17 22:37:11,734 INFO L78 Accepts]: Start accepts. Automaton has 2425 states and 6645 transitions. Word has length 78 [2022-01-17 22:37:11,734 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-17 22:37:11,734 INFO L470 AbstractCegarLoop]: Abstraction has 2425 states and 6645 transitions. [2022-01-17 22:37:11,734 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 5.6923076923076925) internal successors, (148), 26 states have internal predecessors, (148), 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) [2022-01-17 22:37:11,734 INFO L276 IsEmpty]: Start isEmpty. Operand 2425 states and 6645 transitions. [2022-01-17 22:37:11,744 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2022-01-17 22:37:11,744 INFO L506 BasicCegarLoop]: Found error trace [2022-01-17 22:37:11,744 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 9, 9, 9, 8, 8, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-17 22:37:11,766 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-01-17 22:37:11,959 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-17 22:37:11,959 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-17 22:37:11,960 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-17 22:37:11,960 INFO L85 PathProgramCache]: Analyzing trace with hash 396285664, now seen corresponding path program 3 times [2022-01-17 22:37:11,960 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-17 22:37:11,960 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1750577195] [2022-01-17 22:37:11,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-17 22:37:11,960 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-17 22:37:11,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-17 22:37:12,227 INFO L134 CoverageAnalysis]: Checked inductivity of 317 backedges. 0 proven. 316 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-17 22:37:12,228 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-17 22:37:12,228 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1750577195] [2022-01-17 22:37:12,228 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1750577195] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-17 22:37:12,228 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1903699683] [2022-01-17 22:37:12,228 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-17 22:37:12,228 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-17 22:37:12,228 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-17 22:37:12,230 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) [2022-01-17 22:37:12,231 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-01-17 22:37:12,313 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2022-01-17 22:37:12,313 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-17 22:37:12,314 INFO L263 TraceCheckSpWp]: Trace formula consists of 256 conjuncts, 23 conjunts are in the unsatisfiable core [2022-01-17 22:37:12,317 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-17 22:37:12,540 INFO L134 CoverageAnalysis]: Checked inductivity of 317 backedges. 0 proven. 316 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-17 22:37:12,540 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-17 22:37:13,036 INFO L134 CoverageAnalysis]: Checked inductivity of 317 backedges. 0 proven. 316 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-17 22:37:13,036 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1903699683] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-17 22:37:13,036 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-17 22:37:13,037 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22, 22] total 42 [2022-01-17 22:37:13,037 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [992403177] [2022-01-17 22:37:13,037 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-17 22:37:13,037 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2022-01-17 22:37:13,037 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-17 22:37:13,038 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2022-01-17 22:37:13,038 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=392, Invalid=1330, Unknown=0, NotChecked=0, Total=1722 [2022-01-17 22:37:13,039 INFO L87 Difference]: Start difference. First operand 2425 states and 6645 transitions. Second operand has 42 states, 42 states have (on average 5.690476190476191) internal successors, (239), 42 states have internal predecessors, (239), 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) [2022-01-17 22:37:15,493 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-17 22:37:15,494 INFO L93 Difference]: Finished difference Result 12361 states and 34184 transitions. [2022-01-17 22:37:15,494 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 97 states. [2022-01-17 22:37:15,494 INFO L78 Accepts]: Start accepts. Automaton has has 42 states, 42 states have (on average 5.690476190476191) internal successors, (239), 42 states have internal predecessors, (239), 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 123 [2022-01-17 22:37:15,495 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-17 22:37:15,530 INFO L225 Difference]: With dead ends: 12361 [2022-01-17 22:37:15,530 INFO L226 Difference]: Without dead ends: 7834 [2022-01-17 22:37:15,534 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 357 GetRequests, 226 SyntacticMatches, 0 SemanticMatches, 131 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6201 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=4708, Invalid=12848, Unknown=0, NotChecked=0, Total=17556 [2022-01-17 22:37:15,536 INFO L933 BasicCegarLoop]: 111 mSDtfsCounter, 3114 mSDsluCounter, 1817 mSDsCounter, 0 mSdLazyCounter, 358 mSolverCounterSat, 338 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3114 SdHoareTripleChecker+Valid, 1915 SdHoareTripleChecker+Invalid, 696 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 338 IncrementalHoareTripleChecker+Valid, 358 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-17 22:37:15,536 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3114 Valid, 1915 Invalid, 696 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [338 Valid, 358 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-17 22:37:15,547 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7834 states. [2022-01-17 22:37:15,638 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7834 to 4194. [2022-01-17 22:37:15,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4194 states, 4193 states have (on average 2.734796088719294) internal successors, (11467), 4193 states have internal predecessors, (11467), 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) [2022-01-17 22:37:15,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4194 states to 4194 states and 11467 transitions. [2022-01-17 22:37:15,669 INFO L78 Accepts]: Start accepts. Automaton has 4194 states and 11467 transitions. Word has length 123 [2022-01-17 22:37:15,669 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-17 22:37:15,669 INFO L470 AbstractCegarLoop]: Abstraction has 4194 states and 11467 transitions. [2022-01-17 22:37:15,670 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 42 states, 42 states have (on average 5.690476190476191) internal successors, (239), 42 states have internal predecessors, (239), 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) [2022-01-17 22:37:15,670 INFO L276 IsEmpty]: Start isEmpty. Operand 4194 states and 11467 transitions. [2022-01-17 22:37:15,678 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 199 [2022-01-17 22:37:15,679 INFO L506 BasicCegarLoop]: Found error trace [2022-01-17 22:37:15,679 INFO L514 BasicCegarLoop]: trace histogram [17, 17, 16, 16, 16, 16, 16, 15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-17 22:37:15,702 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-01-17 22:37:15,895 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-17 22:37:15,895 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-17 22:37:15,896 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-17 22:37:15,896 INFO L85 PathProgramCache]: Analyzing trace with hash 671224254, now seen corresponding path program 4 times [2022-01-17 22:37:15,896 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-17 22:37:15,896 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [554954803] [2022-01-17 22:37:15,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-17 22:37:15,896 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-17 22:37:15,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-17 22:37:16,448 INFO L134 CoverageAnalysis]: Checked inductivity of 1187 backedges. 0 proven. 1187 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-17 22:37:16,448 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-17 22:37:16,448 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [554954803] [2022-01-17 22:37:16,448 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [554954803] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-17 22:37:16,448 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1179703011] [2022-01-17 22:37:16,448 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-17 22:37:16,448 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-17 22:37:16,449 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-17 22:37:16,452 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) [2022-01-17 22:37:16,453 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-01-17 22:37:16,543 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-17 22:37:16,544 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-17 22:37:16,545 INFO L263 TraceCheckSpWp]: Trace formula consists of 376 conjuncts, 39 conjunts are in the unsatisfiable core [2022-01-17 22:37:16,553 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-17 22:37:16,976 INFO L134 CoverageAnalysis]: Checked inductivity of 1187 backedges. 0 proven. 1187 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-17 22:37:16,976 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-17 22:37:17,892 INFO L134 CoverageAnalysis]: Checked inductivity of 1187 backedges. 0 proven. 1187 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-17 22:37:17,893 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1179703011] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-17 22:37:17,893 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-17 22:37:17,893 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [38, 38, 38] total 73 [2022-01-17 22:37:17,893 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [257085518] [2022-01-17 22:37:17,893 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-17 22:37:17,894 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 73 states [2022-01-17 22:37:17,894 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-17 22:37:17,894 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 73 interpolants. [2022-01-17 22:37:17,895 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1215, Invalid=4041, Unknown=0, NotChecked=0, Total=5256 [2022-01-17 22:37:17,896 INFO L87 Difference]: Start difference. First operand 4194 states and 11467 transitions. Second operand has 73 states, 73 states have (on average 5.287671232876712) internal successors, (386), 73 states have internal predecessors, (386), 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) [2022-01-17 22:37:20,536 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-17 22:37:20,536 INFO L93 Difference]: Finished difference Result 9723 states and 26702 transitions. [2022-01-17 22:37:20,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 89 states. [2022-01-17 22:37:20,537 INFO L78 Accepts]: Start accepts. Automaton has has 73 states, 73 states have (on average 5.287671232876712) internal successors, (386), 73 states have internal predecessors, (386), 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 198 [2022-01-17 22:37:20,537 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-17 22:37:20,556 INFO L225 Difference]: With dead ends: 9723 [2022-01-17 22:37:20,557 INFO L226 Difference]: Without dead ends: 8059 [2022-01-17 22:37:20,562 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 516 GetRequests, 360 SyntacticMatches, 1 SemanticMatches, 155 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7838 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=6554, Invalid=17938, Unknown=0, NotChecked=0, Total=24492 [2022-01-17 22:37:20,563 INFO L933 BasicCegarLoop]: 81 mSDtfsCounter, 3807 mSDsluCounter, 1664 mSDsCounter, 0 mSdLazyCounter, 343 mSolverCounterSat, 476 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3807 SdHoareTripleChecker+Valid, 1741 SdHoareTripleChecker+Invalid, 819 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 476 IncrementalHoareTripleChecker+Valid, 343 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-17 22:37:20,563 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3807 Valid, 1741 Invalid, 819 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [476 Valid, 343 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-17 22:37:20,573 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8059 states. [2022-01-17 22:37:20,655 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8059 to 4525. [2022-01-17 22:37:20,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4525 states, 4524 states have (on average 2.7453580901856762) internal successors, (12420), 4524 states have internal predecessors, (12420), 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) [2022-01-17 22:37:20,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4525 states to 4525 states and 12420 transitions. [2022-01-17 22:37:20,677 INFO L78 Accepts]: Start accepts. Automaton has 4525 states and 12420 transitions. Word has length 198 [2022-01-17 22:37:20,678 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-17 22:37:20,678 INFO L470 AbstractCegarLoop]: Abstraction has 4525 states and 12420 transitions. [2022-01-17 22:37:20,678 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 73 states, 73 states have (on average 5.287671232876712) internal successors, (386), 73 states have internal predecessors, (386), 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) [2022-01-17 22:37:20,678 INFO L276 IsEmpty]: Start isEmpty. Operand 4525 states and 12420 transitions. [2022-01-17 22:37:20,688 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 229 [2022-01-17 22:37:20,688 INFO L506 BasicCegarLoop]: Found error trace [2022-01-17 22:37:20,688 INFO L514 BasicCegarLoop]: trace histogram [20, 20, 19, 19, 19, 19, 19, 18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-17 22:37:20,716 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-01-17 22:37:20,903 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,SelfDestructingSolverStorable9 [2022-01-17 22:37:20,904 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-17 22:37:20,904 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-17 22:37:20,904 INFO L85 PathProgramCache]: Analyzing trace with hash -722514238, now seen corresponding path program 5 times [2022-01-17 22:37:20,904 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-17 22:37:20,904 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1641607454] [2022-01-17 22:37:20,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-17 22:37:20,904 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-17 22:37:20,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-17 22:37:21,532 INFO L134 CoverageAnalysis]: Checked inductivity of 1694 backedges. 0 proven. 1694 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-17 22:37:21,532 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-17 22:37:21,532 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1641607454] [2022-01-17 22:37:21,532 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1641607454] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-17 22:37:21,533 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1927539972] [2022-01-17 22:37:21,533 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-01-17 22:37:21,533 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-17 22:37:21,533 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-17 22:37:21,535 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) [2022-01-17 22:37:21,540 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-01-17 22:37:21,672 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 21 check-sat command(s) [2022-01-17 22:37:21,672 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-17 22:37:21,674 INFO L263 TraceCheckSpWp]: Trace formula consists of 424 conjuncts, 45 conjunts are in the unsatisfiable core [2022-01-17 22:37:21,677 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-17 22:37:22,095 INFO L134 CoverageAnalysis]: Checked inductivity of 1694 backedges. 0 proven. 1694 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-17 22:37:22,096 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-17 22:37:22,625 INFO L134 CoverageAnalysis]: Checked inductivity of 1694 backedges. 0 proven. 1694 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-17 22:37:22,626 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1927539972] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-17 22:37:22,626 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-17 22:37:22,626 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [44, 44, 44] total 51 [2022-01-17 22:37:22,626 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [433552703] [2022-01-17 22:37:22,626 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-17 22:37:22,627 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 51 states [2022-01-17 22:37:22,627 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-17 22:37:22,627 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2022-01-17 22:37:22,628 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=553, Invalid=1997, Unknown=0, NotChecked=0, Total=2550 [2022-01-17 22:37:22,628 INFO L87 Difference]: Start difference. First operand 4525 states and 12420 transitions. Second operand has 51 states, 51 states have (on average 5.549019607843137) internal successors, (283), 51 states have internal predecessors, (283), 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) [2022-01-17 22:37:25,236 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-17 22:37:25,236 INFO L93 Difference]: Finished difference Result 10161 states and 27910 transitions. [2022-01-17 22:37:25,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 99 states. [2022-01-17 22:37:25,237 INFO L78 Accepts]: Start accepts. Automaton has has 51 states, 51 states have (on average 5.549019607843137) internal successors, (283), 51 states have internal predecessors, (283), 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 228 [2022-01-17 22:37:25,237 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-17 22:37:25,256 INFO L225 Difference]: With dead ends: 10161 [2022-01-17 22:37:25,256 INFO L226 Difference]: Without dead ends: 8834 [2022-01-17 22:37:25,259 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 591 GetRequests, 449 SyntacticMatches, 0 SemanticMatches, 142 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6116 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=5812, Invalid=14780, Unknown=0, NotChecked=0, Total=20592 [2022-01-17 22:37:25,259 INFO L933 BasicCegarLoop]: 111 mSDtfsCounter, 3142 mSDsluCounter, 1737 mSDsCounter, 0 mSdLazyCounter, 361 mSolverCounterSat, 435 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3142 SdHoareTripleChecker+Valid, 1835 SdHoareTripleChecker+Invalid, 796 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 435 IncrementalHoareTripleChecker+Valid, 361 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-17 22:37:25,260 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3142 Valid, 1835 Invalid, 796 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [435 Valid, 361 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-17 22:37:25,270 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8834 states. [2022-01-17 22:37:25,353 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8834 to 4994. [2022-01-17 22:37:25,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4994 states, 4993 states have (on average 2.737232124974965) internal successors, (13667), 4993 states have internal predecessors, (13667), 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) [2022-01-17 22:37:25,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4994 states to 4994 states and 13667 transitions. [2022-01-17 22:37:25,370 INFO L78 Accepts]: Start accepts. Automaton has 4994 states and 13667 transitions. Word has length 228 [2022-01-17 22:37:25,370 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-17 22:37:25,370 INFO L470 AbstractCegarLoop]: Abstraction has 4994 states and 13667 transitions. [2022-01-17 22:37:25,370 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 51 states, 51 states have (on average 5.549019607843137) internal successors, (283), 51 states have internal predecessors, (283), 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) [2022-01-17 22:37:25,371 INFO L276 IsEmpty]: Start isEmpty. Operand 4994 states and 13667 transitions. [2022-01-17 22:37:25,381 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 239 [2022-01-17 22:37:25,381 INFO L506 BasicCegarLoop]: Found error trace [2022-01-17 22:37:25,381 INFO L514 BasicCegarLoop]: trace histogram [21, 21, 20, 20, 20, 20, 20, 19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-17 22:37:25,404 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2022-01-17 22:37:25,595 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-17 22:37:25,595 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-17 22:37:25,596 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-17 22:37:25,596 INFO L85 PathProgramCache]: Analyzing trace with hash 1610517954, now seen corresponding path program 6 times [2022-01-17 22:37:25,596 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-17 22:37:25,596 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [419721913] [2022-01-17 22:37:25,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-17 22:37:25,596 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-17 22:37:25,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-17 22:37:26,232 INFO L134 CoverageAnalysis]: Checked inductivity of 1883 backedges. 1799 proven. 77 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-01-17 22:37:26,232 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-17 22:37:26,232 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [419721913] [2022-01-17 22:37:26,232 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [419721913] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-17 22:37:26,232 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1297131977] [2022-01-17 22:37:26,232 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-01-17 22:37:26,232 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-17 22:37:26,233 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-17 22:37:26,234 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) [2022-01-17 22:37:26,235 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-01-17 22:37:26,355 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 23 check-sat command(s) [2022-01-17 22:37:26,355 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-17 22:37:26,357 INFO L263 TraceCheckSpWp]: Trace formula consists of 440 conjuncts, 42 conjunts are in the unsatisfiable core [2022-01-17 22:37:26,360 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-17 22:37:26,766 INFO L134 CoverageAnalysis]: Checked inductivity of 1883 backedges. 1876 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-01-17 22:37:26,766 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-17 22:37:26,766 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1297131977] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-17 22:37:26,766 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-01-17 22:37:26,766 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [43] imperfect sequences [43] total 45 [2022-01-17 22:37:26,767 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [649753247] [2022-01-17 22:37:26,767 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-17 22:37:26,767 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2022-01-17 22:37:26,767 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-17 22:37:26,768 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2022-01-17 22:37:26,768 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=489, Invalid=1491, Unknown=0, NotChecked=0, Total=1980 [2022-01-17 22:37:26,768 INFO L87 Difference]: Start difference. First operand 4994 states and 13667 transitions. Second operand has 43 states, 43 states have (on average 5.395348837209302) internal successors, (232), 43 states have internal predecessors, (232), 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) [2022-01-17 22:37:27,751 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-17 22:37:27,751 INFO L93 Difference]: Finished difference Result 46713 states and 127091 transitions. [2022-01-17 22:37:27,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2022-01-17 22:37:27,752 INFO L78 Accepts]: Start accepts. Automaton has has 43 states, 43 states have (on average 5.395348837209302) internal successors, (232), 43 states have internal predecessors, (232), 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 238 [2022-01-17 22:37:27,752 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-17 22:37:27,752 INFO L225 Difference]: With dead ends: 46713 [2022-01-17 22:37:27,752 INFO L226 Difference]: Without dead ends: 0 [2022-01-17 22:37:27,753 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 360 GetRequests, 277 SyntacticMatches, 0 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1157 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=2209, Invalid=4931, Unknown=0, NotChecked=0, Total=7140 [2022-01-17 22:37:27,754 INFO L933 BasicCegarLoop]: 703 mSDtfsCounter, 823 mSDsluCounter, 4674 mSDsCounter, 0 mSdLazyCounter, 763 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 823 SdHoareTripleChecker+Valid, 5109 SdHoareTripleChecker+Invalid, 784 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 763 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-17 22:37:27,754 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [823 Valid, 5109 Invalid, 784 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 763 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-17 22:37:27,754 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-01-17 22:37:27,754 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-01-17 22:37:27,754 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) [2022-01-17 22:37:27,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-01-17 22:37:27,754 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 238 [2022-01-17 22:37:27,754 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-17 22:37:27,754 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-01-17 22:37:27,755 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 43 states, 43 states have (on average 5.395348837209302) internal successors, (232), 43 states have internal predecessors, (232), 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) [2022-01-17 22:37:27,755 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-01-17 22:37:27,755 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-01-17 22:37:27,757 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining) [2022-01-17 22:37:27,757 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATION (1 of 3 remaining) [2022-01-17 22:37:27,757 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATION (0 of 3 remaining) [2022-01-17 22:37:27,779 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2022-01-17 22:37:27,971 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-17 22:37:27,974 INFO L732 BasicCegarLoop]: Path program histogram: [6, 2, 1, 1, 1, 1] [2022-01-17 22:37:27,975 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-01-17 22:37:27,975 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2022-01-17 22:37:27,977 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 17.01 10:37:27 BasicIcfg [2022-01-17 22:37:27,978 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-01-17 22:37:27,978 INFO L158 Benchmark]: Toolchain (without parser) took 23449.47ms. Allocated memory was 369.1MB in the beginning and 645.9MB in the end (delta: 276.8MB). Free memory was 314.3MB in the beginning and 392.1MB in the end (delta: -77.8MB). Peak memory consumption was 200.7MB. Max. memory is 16.0GB. [2022-01-17 22:37:27,978 INFO L158 Benchmark]: CDTParser took 0.11ms. Allocated memory is still 369.1MB. Free memory is still 331.9MB. There was no memory consumed. Max. memory is 16.0GB. [2022-01-17 22:37:27,978 INFO L158 Benchmark]: CACSL2BoogieTranslator took 378.81ms. Allocated memory is still 369.1MB. Free memory was 314.2MB in the beginning and 332.5MB in the end (delta: -18.4MB). Peak memory consumption was 19.6MB. Max. memory is 16.0GB. [2022-01-17 22:37:27,979 INFO L158 Benchmark]: Boogie Procedure Inliner took 49.79ms. Allocated memory is still 369.1MB. Free memory was 332.5MB in the beginning and 331.5MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.0GB. [2022-01-17 22:37:27,979 INFO L158 Benchmark]: Boogie Preprocessor took 31.82ms. Allocated memory is still 369.1MB. Free memory was 331.5MB in the beginning and 329.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2022-01-17 22:37:27,979 INFO L158 Benchmark]: RCFGBuilder took 316.78ms. Allocated memory is still 369.1MB. Free memory was 329.4MB in the beginning and 316.8MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.0GB. [2022-01-17 22:37:27,979 INFO L158 Benchmark]: TraceAbstraction took 22668.18ms. Allocated memory was 369.1MB in the beginning and 645.9MB in the end (delta: 276.8MB). Free memory was 316.8MB in the beginning and 392.1MB in the end (delta: -75.3MB). Peak memory consumption was 204.1MB. Max. memory is 16.0GB. [2022-01-17 22:37:27,980 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 369.1MB. Free memory is still 331.9MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 378.81ms. Allocated memory is still 369.1MB. Free memory was 314.2MB in the beginning and 332.5MB in the end (delta: -18.4MB). Peak memory consumption was 19.6MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 49.79ms. Allocated memory is still 369.1MB. Free memory was 332.5MB in the beginning and 331.5MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.0GB. * Boogie Preprocessor took 31.82ms. Allocated memory is still 369.1MB. Free memory was 331.5MB in the beginning and 329.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 316.78ms. Allocated memory is still 369.1MB. Free memory was 329.4MB in the beginning and 316.8MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.0GB. * TraceAbstraction took 22668.18ms. Allocated memory was 369.1MB in the beginning and 645.9MB in the end (delta: 276.8MB). Free memory was 316.8MB in the beginning and 392.1MB in the end (delta: -75.3MB). Peak memory consumption was 204.1MB. 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 - PositiveResult [Line: 722]: 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 5 procedures, 88 locations, 3 error locations. Started 1 CEGAR loops. OverallTime: 22.6s, OverallIterations: 12, TraceHistogramMax: 21, PathProgramHistogramMax: 6, EmptinessCheckTime: 0.1s, AutomataDifference: 11.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 14406 SdHoareTripleChecker+Valid, 1.9s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 14406 mSDsluCounter, 15148 SdHoareTripleChecker+Invalid, 1.6s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 13764 mSDsCounter, 1569 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 2585 IncrementalHoareTripleChecker+Invalid, 4154 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 1569 mSolverCounterUnsat, 1733 mSDtfsCounter, 2585 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 2372 GetRequests, 1675 SyntacticMatches, 2 SemanticMatches, 695 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23781 ImplicationChecksByTransitivity, 10.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=4994occurred in iteration=11, InterpolantAutomatonStates: 502, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.8s AutomataMinimizationTime, 12 MinimizatonAttempts, 16127 StatesRemovedByMinimization, 11 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 7.5s InterpolantComputationTime, 2151 NumberOfCodeBlocks, 2151 NumberOfCodeBlocksAsserted, 73 NumberOfCheckSat, 2864 ConstructedInterpolants, 0 QuantifiedInterpolants, 8533 SizeOfPredicates, 152 NumberOfNonLiveVariables, 1976 ConjunctsInSsa, 184 ConjunctsInUnsatCore, 25 InterpolantComputations, 6 PerfectInterpolantSequences, 3695/13612 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2022-01-17 22:37:28,034 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...