/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/mcr/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-McrAutomaton-WP.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/goblint-regression/13-privatized_38-traces-ex-4-switch_true.i -------------------------------------------------------------------------------- This is Ultimate 0.2.2-wip.dk.mcr-reduction-c7b2d19 [2022-03-15 18:11:00,313 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-03-15 18:11:00,320 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-03-15 18:11:00,363 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-03-15 18:11:00,363 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-03-15 18:11:00,364 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-03-15 18:11:00,365 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-03-15 18:11:00,366 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-03-15 18:11:00,367 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-03-15 18:11:00,368 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-03-15 18:11:00,368 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-03-15 18:11:00,369 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-03-15 18:11:00,369 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-03-15 18:11:00,370 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-03-15 18:11:00,373 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-03-15 18:11:00,376 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-03-15 18:11:00,377 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-03-15 18:11:00,380 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-03-15 18:11:00,385 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-03-15 18:11:00,389 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-03-15 18:11:00,390 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-03-15 18:11:00,392 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-03-15 18:11:00,393 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-03-15 18:11:00,394 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-03-15 18:11:00,399 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-03-15 18:11:00,399 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-03-15 18:11:00,399 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-03-15 18:11:00,400 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-03-15 18:11:00,400 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-03-15 18:11:00,401 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... 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[2022-03-15 18:11:00,405 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-03-15 18:11:00,405 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-03-15 18:11:00,405 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-03-15 18:11:00,406 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/mcr/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-McrAutomaton-WP.epf [2022-03-15 18:11:00,430 INFO L113 SettingsManager]: Loading preferences was successful [2022-03-15 18:11:00,431 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-03-15 18:11:00,431 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-03-15 18:11:00,431 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-03-15 18:11:00,432 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-03-15 18:11:00,432 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-03-15 18:11:00,432 INFO L138 SettingsManager]: * Use SBE=true [2022-03-15 18:11:00,432 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-03-15 18:11:00,432 INFO L138 SettingsManager]: * sizeof long=4 [2022-03-15 18:11:00,432 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-03-15 18:11:00,432 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-03-15 18:11:00,432 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-03-15 18:11:00,432 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-03-15 18:11:00,432 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-03-15 18:11:00,432 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-03-15 18:11:00,432 INFO L138 SettingsManager]: * sizeof long double=12 [2022-03-15 18:11:00,433 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-03-15 18:11:00,433 INFO L138 SettingsManager]: * Use constant arrays=true [2022-03-15 18:11:00,433 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-03-15 18:11:00,433 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-03-15 18:11:00,433 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-03-15 18:11:00,433 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-03-15 18:11:00,433 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-03-15 18:11:00,433 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-03-15 18:11:00,433 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-03-15 18:11:00,433 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_NestedInterpolation [2022-03-15 18:11:00,433 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-03-15 18:11:00,433 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-03-15 18:11:00,434 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-03-15 18:11:00,434 INFO L138 SettingsManager]: * Override the interpolant automaton setting of the refinement strategy=true [2022-03-15 18:11:00,434 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=VARIABLE_BASED_MOVER_CHECK [2022-03-15 18:11:00,434 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-03-15 18:11:00,434 INFO L138 SettingsManager]: * Interpolant automaton=MCR WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-03-15 18:11:00,628 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-03-15 18:11:00,645 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-03-15 18:11:00,647 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-03-15 18:11:00,647 INFO L271 PluginConnector]: Initializing CDTParser... [2022-03-15 18:11:00,651 INFO L275 PluginConnector]: CDTParser initialized [2022-03-15 18:11:00,652 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/13-privatized_38-traces-ex-4-switch_true.i [2022-03-15 18:11:00,705 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a7bc5bf9e/b5af6f7fb5cb44d19931c917353f3dc8/FLAG53df037e6 [2022-03-15 18:11:01,099 INFO L306 CDTParser]: Found 1 translation units. [2022-03-15 18:11:01,100 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/13-privatized_38-traces-ex-4-switch_true.i [2022-03-15 18:11:01,114 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a7bc5bf9e/b5af6f7fb5cb44d19931c917353f3dc8/FLAG53df037e6 [2022-03-15 18:11:01,126 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a7bc5bf9e/b5af6f7fb5cb44d19931c917353f3dc8 [2022-03-15 18:11:01,128 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-03-15 18:11:01,128 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-03-15 18:11:01,132 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-03-15 18:11:01,132 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-03-15 18:11:01,134 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-03-15 18:11:01,134 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.03 06:11:01" (1/1) ... [2022-03-15 18:11:01,135 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6be1a4e8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.03 06:11:01, skipping insertion in model container [2022-03-15 18:11:01,135 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.03 06:11:01" (1/1) ... [2022-03-15 18:11:01,140 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-03-15 18:11:01,190 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-03-15 18:11:01,318 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/13-privatized_38-traces-ex-4-switch_true.i[1095,1108] [2022-03-15 18:11:01,430 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-03-15 18:11:01,442 INFO L203 MainTranslator]: Completed pre-run [2022-03-15 18:11:01,452 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/13-privatized_38-traces-ex-4-switch_true.i[1095,1108] [2022-03-15 18:11:01,479 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-03-15 18:11:01,510 INFO L208 MainTranslator]: Completed translation [2022-03-15 18:11:01,511 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.03 06:11:01 WrapperNode [2022-03-15 18:11:01,511 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-03-15 18:11:01,512 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-03-15 18:11:01,512 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-03-15 18:11:01,512 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-03-15 18:11:01,517 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.03 06:11:01" (1/1) ... [2022-03-15 18:11:01,530 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.03 06:11:01" (1/1) ... [2022-03-15 18:11:01,546 INFO L137 Inliner]: procedures = 162, calls = 29, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 49 [2022-03-15 18:11:01,547 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-03-15 18:11:01,547 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-03-15 18:11:01,547 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-03-15 18:11:01,548 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-03-15 18:11:01,553 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.03 06:11:01" (1/1) ... [2022-03-15 18:11:01,553 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.03 06:11:01" (1/1) ... [2022-03-15 18:11:01,564 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.03 06:11:01" (1/1) ... [2022-03-15 18:11:01,564 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.03 06:11:01" (1/1) ... [2022-03-15 18:11:01,566 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.03 06:11:01" (1/1) ... [2022-03-15 18:11:01,567 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.03 06:11:01" (1/1) ... [2022-03-15 18:11:01,568 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.03 06:11:01" (1/1) ... [2022-03-15 18:11:01,569 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-03-15 18:11:01,570 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-03-15 18:11:01,570 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-03-15 18:11:01,570 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-03-15 18:11:01,571 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.03 06:11:01" (1/1) ... [2022-03-15 18:11:01,582 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-03-15 18:11:01,591 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 18:11:01,603 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-03-15 18:11:01,604 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-03-15 18:11:01,625 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-03-15 18:11:01,626 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-03-15 18:11:01,626 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-03-15 18:11:01,626 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-03-15 18:11:01,626 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2022-03-15 18:11:01,626 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2022-03-15 18:11:01,626 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-03-15 18:11:01,626 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-03-15 18:11:01,626 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-03-15 18:11:01,626 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-03-15 18:11:01,627 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-03-15 18:11:01,772 INFO L234 CfgBuilder]: Building ICFG [2022-03-15 18:11:01,773 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-03-15 18:11:01,936 INFO L275 CfgBuilder]: Performing block encoding [2022-03-15 18:11:01,941 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-03-15 18:11:01,941 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-03-15 18:11:01,942 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.03 06:11:01 BoogieIcfgContainer [2022-03-15 18:11:01,942 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-03-15 18:11:01,944 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-03-15 18:11:01,944 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-03-15 18:11:01,949 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-03-15 18:11:01,950 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.03 06:11:01" (1/3) ... [2022-03-15 18:11:01,950 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@179f849f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.03 06:11:01, skipping insertion in model container [2022-03-15 18:11:01,950 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.03 06:11:01" (2/3) ... [2022-03-15 18:11:01,950 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@179f849f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.03 06:11:01, skipping insertion in model container [2022-03-15 18:11:01,951 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.03 06:11:01" (3/3) ... [2022-03-15 18:11:01,951 INFO L111 eAbstractionObserver]: Analyzing ICFG 13-privatized_38-traces-ex-4-switch_true.i [2022-03-15 18:11:01,959 WARN L150 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-03-15 18:11:01,959 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2022-03-15 18:11:01,959 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-03-15 18:11:01,959 INFO L534 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-03-15 18:11:01,984 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:11:01,984 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:11:01,984 WARN L322 ript$VariableManager]: TermVariabe t_funThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:11:01,984 WARN L322 ript$VariableManager]: TermVariabe t_funThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:11:01,984 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:11:01,984 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:11:01,985 WARN L322 ript$VariableManager]: TermVariabe t_funThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:11:01,985 WARN L322 ript$VariableManager]: TermVariabe t_funThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:11:01,985 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#t~nondet1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:11:01,985 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#t~nondet1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:11:01,985 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#t~nondet1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:11:01,986 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#t~nondet1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:11:01,986 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:11:01,986 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:11:01,986 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:11:01,986 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:11:01,987 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#t~nondet3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:11:01,987 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#t~nondet3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:11:01,987 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#t~nondet3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:11:01,987 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#t~nondet3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:11:01,988 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:11:01,988 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:11:01,988 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:11:01,988 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:11:01,990 WARN L322 ript$VariableManager]: TermVariabe t_funThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:11:01,991 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#t~nondet1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:11:01,991 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:11:01,991 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:11:01,991 WARN L322 ript$VariableManager]: TermVariabe t_funThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:11:01,991 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#t~nondet3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:11:01,992 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:11:01,993 INFO L148 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-03-15 18:11:02,035 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-03-15 18:11:02,047 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=Craig_NestedInterpolation, mInterpolantAutomaton=MCR, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mLazyFiniteAutomaton=false, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=true, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR, mMcrOptimizeForkJoin=true, mMcrOverapproximateWrwc=true [2022-03-15 18:11:02,048 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-03-15 18:11:02,060 INFO L126 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2022-03-15 18:11:02,067 INFO L133 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 74 places, 71 transitions, 147 flow [2022-03-15 18:11:02,070 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 74 places, 71 transitions, 147 flow [2022-03-15 18:11:02,071 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 74 places, 71 transitions, 147 flow [2022-03-15 18:11:02,106 INFO L129 PetriNetUnfolder]: 1/70 cut-off events. [2022-03-15 18:11:02,107 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-03-15 18:11:02,109 INFO L84 FinitePrefix]: Finished finitePrefix Result has 74 conditions, 70 events. 1/70 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 41 event pairs, 0 based on Foata normal form. 0/68 useless extension candidates. Maximal degree in co-relation 38. Up to 2 conditions per place. [2022-03-15 18:11:02,110 INFO L116 LiptonReduction]: Number of co-enabled transitions 672 [2022-03-15 18:11:03,906 INFO L131 LiptonReduction]: Checked pairs total: 1918 [2022-03-15 18:11:03,906 INFO L133 LiptonReduction]: Total number of compositions: 57 [2022-03-15 18:11:03,913 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 22 places, 19 transitions, 43 flow [2022-03-15 18:11:03,924 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 47 states, 45 states have (on average 1.7333333333333334) internal successors, (78), 46 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 18:11:03,925 INFO L276 IsEmpty]: Start isEmpty. Operand has 47 states, 45 states have (on average 1.7333333333333334) internal successors, (78), 46 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 18:11:03,929 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-03-15 18:11:03,929 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 18:11:03,929 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-03-15 18:11:03,930 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION] === [2022-03-15 18:11:03,933 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 18:11:03,933 INFO L85 PathProgramCache]: Analyzing trace with hash 235911326, now seen corresponding path program 1 times [2022-03-15 18:11:03,948 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 18:11:03,948 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [54309720] [2022-03-15 18:11:03,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 18:11:03,949 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 18:11:04,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 18:11:04,093 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 18:11:04,093 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 18:11:04,094 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [54309720] [2022-03-15 18:11:04,094 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [54309720] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 18:11:04,095 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 18:11:04,095 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-03-15 18:11:04,096 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1926621806] [2022-03-15 18:11:04,096 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2022-03-15 18:11:04,100 INFO L249 McrAutomatonBuilder]: Started intersection. [2022-03-15 18:11:04,106 INFO L252 McrAutomatonBuilder]: Finished intersection with 6 states and 5 transitions. [2022-03-15 18:11:04,107 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2022-03-15 18:11:04,109 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2022-03-15 18:11:04,110 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-03-15 18:11:04,110 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 18:11:04,127 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-03-15 18:11:04,127 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-03-15 18:11:04,129 INFO L87 Difference]: Start difference. First operand has 47 states, 45 states have (on average 1.7333333333333334) internal successors, (78), 46 states have internal predecessors, (78), 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 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 18:11:04,154 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 18:11:04,154 INFO L93 Difference]: Finished difference Result 44 states and 69 transitions. [2022-03-15 18:11:04,155 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-03-15 18:11:04,156 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 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 5 [2022-03-15 18:11:04,156 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 18:11:04,161 INFO L225 Difference]: With dead ends: 44 [2022-03-15 18:11:04,161 INFO L226 Difference]: Without dead ends: 26 [2022-03-15 18:11:04,162 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-03-15 18:11:04,165 INFO L933 BasicCegarLoop]: 4 mSDtfsCounter, 5 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 6 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-15 18:11:04,166 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5 Valid, 6 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-15 18:11:04,177 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2022-03-15 18:11:04,184 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2022-03-15 18:11:04,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 25 states have (on average 1.48) internal successors, (37), 25 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 18:11:04,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 37 transitions. [2022-03-15 18:11:04,186 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 37 transitions. Word has length 5 [2022-03-15 18:11:04,186 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 18:11:04,186 INFO L470 AbstractCegarLoop]: Abstraction has 26 states and 37 transitions. [2022-03-15 18:11:04,186 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 18:11:04,186 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 37 transitions. [2022-03-15 18:11:04,187 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-03-15 18:11:04,187 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 18:11:04,187 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 18:11:04,187 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-03-15 18:11:04,187 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION] === [2022-03-15 18:11:04,188 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 18:11:04,188 INFO L85 PathProgramCache]: Analyzing trace with hash 1277895382, now seen corresponding path program 1 times [2022-03-15 18:11:04,188 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 18:11:04,189 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1617836462] [2022-03-15 18:11:04,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 18:11:04,189 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 18:11:04,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 18:11:04,239 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 18:11:04,240 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 18:11:04,240 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1617836462] [2022-03-15 18:11:04,240 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1617836462] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 18:11:04,240 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 18:11:04,240 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-03-15 18:11:04,240 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [41479579] [2022-03-15 18:11:04,240 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2022-03-15 18:11:04,241 INFO L249 McrAutomatonBuilder]: Started intersection. [2022-03-15 18:11:04,243 INFO L252 McrAutomatonBuilder]: Finished intersection with 11 states and 12 transitions. [2022-03-15 18:11:04,243 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2022-03-15 18:11:04,261 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2022-03-15 18:11:04,262 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-03-15 18:11:04,262 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 18:11:04,263 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-03-15 18:11:04,263 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-03-15 18:11:04,263 INFO L87 Difference]: Start difference. First operand 26 states and 37 transitions. Second operand has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 18:11:04,294 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 18:11:04,294 INFO L93 Difference]: Finished difference Result 15 states and 16 transitions. [2022-03-15 18:11:04,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-03-15 18:11:04,295 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 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 8 [2022-03-15 18:11:04,295 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 18:11:04,295 INFO L225 Difference]: With dead ends: 15 [2022-03-15 18:11:04,295 INFO L226 Difference]: Without dead ends: 10 [2022-03-15 18:11:04,295 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-03-15 18:11:04,296 INFO L933 BasicCegarLoop]: 2 mSDtfsCounter, 1 mSDsluCounter, 1 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 2 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-15 18:11:04,296 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1 Valid, 2 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-15 18:11:04,297 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states. [2022-03-15 18:11:04,298 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 10. [2022-03-15 18:11:04,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10 states, 9 states have (on average 1.0) internal successors, (9), 9 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 18:11:04,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 9 transitions. [2022-03-15 18:11:04,298 INFO L78 Accepts]: Start accepts. Automaton has 10 states and 9 transitions. Word has length 8 [2022-03-15 18:11:04,298 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 18:11:04,298 INFO L470 AbstractCegarLoop]: Abstraction has 10 states and 9 transitions. [2022-03-15 18:11:04,299 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 18:11:04,299 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 9 transitions. [2022-03-15 18:11:04,299 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-03-15 18:11:04,299 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 18:11:04,299 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 18:11:04,299 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-03-15 18:11:04,299 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION] === [2022-03-15 18:11:04,300 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 18:11:04,300 INFO L85 PathProgramCache]: Analyzing trace with hash 958461181, now seen corresponding path program 1 times [2022-03-15 18:11:04,301 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 18:11:04,301 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1775771619] [2022-03-15 18:11:04,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 18:11:04,301 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 18:11:04,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 18:11:04,414 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 18:11:04,415 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 18:11:04,415 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1775771619] [2022-03-15 18:11:04,415 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1775771619] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 18:11:04,415 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 18:11:04,415 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-03-15 18:11:04,415 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [715974231] [2022-03-15 18:11:04,415 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2022-03-15 18:11:04,416 INFO L249 McrAutomatonBuilder]: Started intersection. [2022-03-15 18:11:04,417 INFO L252 McrAutomatonBuilder]: Finished intersection with 10 states and 9 transitions. [2022-03-15 18:11:04,418 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2022-03-15 18:11:04,418 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2022-03-15 18:11:04,418 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-03-15 18:11:04,418 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 18:11:04,419 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-03-15 18:11:04,419 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-03-15 18:11:04,419 INFO L87 Difference]: Start difference. First operand 10 states and 9 transitions. Second operand has 5 states, 5 states have (on average 1.8) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 18:11:04,428 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 18:11:04,428 INFO L93 Difference]: Finished difference Result 8 states and 7 transitions. [2022-03-15 18:11:04,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-03-15 18:11:04,429 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1.8) internal successors, (9), 4 states have internal predecessors, (9), 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 9 [2022-03-15 18:11:04,429 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 18:11:04,429 INFO L225 Difference]: With dead ends: 8 [2022-03-15 18:11:04,429 INFO L226 Difference]: Without dead ends: 0 [2022-03-15 18:11:04,429 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-03-15 18:11:04,430 INFO L933 BasicCegarLoop]: 1 mSDtfsCounter, 3 mSDsluCounter, 1 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 1 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-15 18:11:04,431 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3 Valid, 1 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-15 18:11:04,431 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-03-15 18:11:04,431 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-03-15 18:11:04,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 18:11:04,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-03-15 18:11:04,431 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 9 [2022-03-15 18:11:04,431 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 18:11:04,432 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-03-15 18:11:04,432 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 1.8) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 18:11:04,432 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-03-15 18:11:04,432 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-03-15 18:11:04,433 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 2 remaining) [2022-03-15 18:11:04,434 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATION (0 of 2 remaining) [2022-03-15 18:11:04,434 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-03-15 18:11:04,436 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2022-03-15 18:11:04,437 INFO L230 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-03-15 18:11:04,437 INFO L180 ceAbstractionStarter]: Computing trace abstraction results [2022-03-15 18:11:04,439 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.03 06:11:04 BasicIcfg [2022-03-15 18:11:04,439 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-03-15 18:11:04,440 INFO L158 Benchmark]: Toolchain (without parser) took 3311.15ms. Allocated memory was 184.5MB in the beginning and 263.2MB in the end (delta: 78.6MB). Free memory was 125.8MB in the beginning and 94.5MB in the end (delta: 31.3MB). Peak memory consumption was 111.2MB. Max. memory is 8.0GB. [2022-03-15 18:11:04,440 INFO L158 Benchmark]: CDTParser took 0.11ms. Allocated memory is still 184.5MB. Free memory is still 143.5MB. There was no memory consumed. Max. memory is 8.0GB. [2022-03-15 18:11:04,440 INFO L158 Benchmark]: CACSL2BoogieTranslator took 379.79ms. Allocated memory was 184.5MB in the beginning and 263.2MB in the end (delta: 78.6MB). Free memory was 125.6MB in the beginning and 222.9MB in the end (delta: -97.3MB). Peak memory consumption was 12.0MB. Max. memory is 8.0GB. [2022-03-15 18:11:04,440 INFO L158 Benchmark]: Boogie Procedure Inliner took 34.95ms. Allocated memory is still 263.2MB. Free memory was 222.9MB in the beginning and 220.8MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-03-15 18:11:04,441 INFO L158 Benchmark]: Boogie Preprocessor took 22.11ms. Allocated memory is still 263.2MB. Free memory was 220.8MB in the beginning and 219.8MB in the end (delta: 1.0MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-03-15 18:11:04,441 INFO L158 Benchmark]: RCFGBuilder took 372.45ms. Allocated memory is still 263.2MB. Free memory was 219.8MB in the beginning and 207.7MB in the end (delta: 12.1MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. [2022-03-15 18:11:04,441 INFO L158 Benchmark]: TraceAbstraction took 2495.59ms. Allocated memory is still 263.2MB. Free memory was 207.2MB in the beginning and 94.5MB in the end (delta: 112.7MB). Peak memory consumption was 114.3MB. Max. memory is 8.0GB. [2022-03-15 18:11:04,447 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 184.5MB. Free memory is still 143.5MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 379.79ms. Allocated memory was 184.5MB in the beginning and 263.2MB in the end (delta: 78.6MB). Free memory was 125.6MB in the beginning and 222.9MB in the end (delta: -97.3MB). Peak memory consumption was 12.0MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 34.95ms. Allocated memory is still 263.2MB. Free memory was 222.9MB in the beginning and 220.8MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 22.11ms. Allocated memory is still 263.2MB. Free memory was 220.8MB in the beginning and 219.8MB in the end (delta: 1.0MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 372.45ms. Allocated memory is still 263.2MB. Free memory was 219.8MB in the beginning and 207.7MB in the end (delta: 12.1MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. * TraceAbstraction took 2495.59ms. Allocated memory is still 263.2MB. Free memory was 207.2MB in the beginning and 94.5MB in the end (delta: 112.7MB). Peak memory consumption was 114.3MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 1.8s, 74 PlacesBefore, 22 PlacesAfterwards, 71 TransitionsBefore, 19 TransitionsAfterwards, 672 CoEnabledTransitionPairs, 6 FixpointIterations, 30 TrivialSequentialCompositions, 23 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 4 ConcurrentYvCompositions, 0 ChoiceCompositions, 57 TotalNumberOfCompositions, 1918 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 649, positive: 488, positive conditional: 0, positive unconditional: 488, negative: 161, negative conditional: 0, negative unconditional: 161, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 360, positive: 326, positive conditional: 0, positive unconditional: 326, negative: 34, negative conditional: 0, negative unconditional: 34, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 649, positive: 162, positive conditional: 0, positive unconditional: 162, negative: 127, negative conditional: 0, negative unconditional: 127, unknown: 360, unknown conditional: 0, unknown unconditional: 360] , Statistics on independence cache: Total cache size (in pairs): 27, Positive cache size: 13, Positive conditional cache size: 0, Positive unconditional cache size: 13, Negative cache size: 14, Negative conditional cache size: 0, Negative unconditional cache size: 14 - 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: 19]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 3 procedures, 87 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 2.4s, OverallIterations: 3, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.9s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 9 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 9 mSDsluCounter, 9 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 6 mSDsCounter, 14 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 36 IncrementalHoareTripleChecker+Invalid, 50 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 14 mSolverCounterUnsat, 7 mSDtfsCounter, 36 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 12 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=47occurred in iteration=0, InterpolantAutomatonStates: 10, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 22 NumberOfCodeBlocks, 22 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 19 ConstructedInterpolants, 0 QuantifiedInterpolants, 126 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2022-03-15 18:11:04,495 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...