/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/pthread-wmm/safe036_rmo.oepc.i -------------------------------------------------------------------------------- This is Ultimate 0.2.0-7a177ad [2020-11-09 12:54:56,881 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-09 12:54:56,884 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-09 12:54:56,941 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-09 12:54:56,941 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-09 12:54:56,945 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-09 12:54:56,949 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-09 12:54:56,958 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-09 12:54:56,961 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-09 12:54:56,968 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-09 12:54:56,970 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-09 12:54:56,971 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-09 12:54:56,972 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-09 12:54:56,976 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-09 12:54:56,978 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-09 12:54:56,980 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-09 12:54:56,982 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-09 12:54:56,986 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-09 12:54:56,992 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-09 12:54:57,000 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-09 12:54:57,011 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-09 12:54:57,013 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-09 12:54:57,015 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-09 12:54:57,017 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-09 12:54:57,026 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-11-09 12:54:57,032 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-09 12:54:57,033 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-09 12:54:57,034 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-09 12:54:57,035 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-09 12:54:57,036 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-09 12:54:57,036 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-09 12:54:57,037 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-09 12:54:57,037 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-09 12:54:57,037 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-09 12:54:57,038 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-09 12:54:57,039 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-09 12:54:57,040 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-11-09 12:54:57,066 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-09 12:54:57,066 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-09 12:54:57,067 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-09 12:54:57,068 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-09 12:54:57,068 INFO L138 SettingsManager]: * Use SBE=true [2020-11-09 12:54:57,068 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-09 12:54:57,068 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-09 12:54:57,069 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-09 12:54:57,069 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-09 12:54:57,069 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-09 12:54:57,069 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-09 12:54:57,069 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-09 12:54:57,069 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-09 12:54:57,070 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-09 12:54:57,070 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-09 12:54:57,070 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-09 12:54:57,070 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-09 12:54:57,071 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-09 12:54:57,071 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-09 12:54:57,071 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-09 12:54:57,071 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-09 12:54:57,071 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-09 12:54:57,072 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-09 12:54:57,072 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-09 12:54:57,072 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-09 12:54:57,072 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-09 12:54:57,072 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-09 12:54:57,072 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-09 12:54:57,073 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-09 12:54:57,073 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-11-09 12:54:57,485 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-09 12:54:57,518 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-09 12:54:57,522 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-09 12:54:57,525 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-09 12:54:57,525 INFO L275 PluginConnector]: CDTParser initialized [2020-11-09 12:54:57,526 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe036_rmo.oepc.i [2020-11-09 12:54:57,631 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2212e8564/058b01a7da4f4417867893a7d90cf44b/FLAG0650023cd [2020-11-09 12:54:58,321 INFO L306 CDTParser]: Found 1 translation units. [2020-11-09 12:54:58,322 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe036_rmo.oepc.i [2020-11-09 12:54:58,344 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2212e8564/058b01a7da4f4417867893a7d90cf44b/FLAG0650023cd [2020-11-09 12:54:58,607 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2212e8564/058b01a7da4f4417867893a7d90cf44b [2020-11-09 12:54:58,610 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-09 12:54:58,618 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-11-09 12:54:58,622 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-09 12:54:58,622 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-09 12:54:58,627 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-09 12:54:58,628 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 12:54:58" (1/1) ... [2020-11-09 12:54:58,633 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2509bb6c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 12:54:58, skipping insertion in model container [2020-11-09 12:54:58,634 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 12:54:58" (1/1) ... [2020-11-09 12:54:58,642 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-09 12:54:58,713 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-09 12:54:59,288 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-09 12:54:59,306 INFO L203 MainTranslator]: Completed pre-run [2020-11-09 12:54:59,364 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-09 12:54:59,522 INFO L208 MainTranslator]: Completed translation [2020-11-09 12:54:59,522 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 12:54:59 WrapperNode [2020-11-09 12:54:59,523 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-09 12:54:59,524 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-09 12:54:59,524 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-09 12:54:59,524 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-09 12:54:59,537 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 12:54:59" (1/1) ... [2020-11-09 12:54:59,579 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 12:54:59" (1/1) ... [2020-11-09 12:54:59,617 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-09 12:54:59,618 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-09 12:54:59,619 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-09 12:54:59,623 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-09 12:54:59,633 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 12:54:59" (1/1) ... [2020-11-09 12:54:59,634 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 12:54:59" (1/1) ... [2020-11-09 12:54:59,641 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 12:54:59" (1/1) ... [2020-11-09 12:54:59,641 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 12:54:59" (1/1) ... [2020-11-09 12:54:59,660 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 12:54:59" (1/1) ... [2020-11-09 12:54:59,668 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 12:54:59" (1/1) ... [2020-11-09 12:54:59,671 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 12:54:59" (1/1) ... [2020-11-09 12:54:59,679 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-09 12:54:59,680 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-09 12:54:59,683 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-09 12:54:59,683 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-09 12:54:59,684 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 12:54:59" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-09 12:54:59,778 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-09 12:54:59,779 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-11-09 12:54:59,779 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-09 12:54:59,779 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-09 12:54:59,780 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-11-09 12:54:59,780 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-11-09 12:54:59,781 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-11-09 12:54:59,782 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-11-09 12:54:59,782 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-09 12:54:59,783 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-11-09 12:54:59,783 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-09 12:54:59,783 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-09 12:54:59,785 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-11-09 12:55:00,344 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-09 12:55:00,344 INFO L298 CfgBuilder]: Removed 10 assume(true) statements. [2020-11-09 12:55:00,347 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 12:55:00 BoogieIcfgContainer [2020-11-09 12:55:00,347 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-09 12:55:00,349 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-09 12:55:00,349 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-09 12:55:00,352 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-09 12:55:00,352 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.11 12:54:58" (1/3) ... [2020-11-09 12:55:00,353 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@23669773 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 12:55:00, skipping insertion in model container [2020-11-09 12:55:00,354 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 12:54:59" (2/3) ... [2020-11-09 12:55:00,354 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@23669773 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 12:55:00, skipping insertion in model container [2020-11-09 12:55:00,354 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 12:55:00" (3/3) ... [2020-11-09 12:55:00,356 INFO L111 eAbstractionObserver]: Analyzing ICFG safe036_rmo.oepc.i [2020-11-09 12:55:00,372 WARN L168 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-11-09 12:55:00,372 INFO L179 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-09 12:55:00,376 INFO L191 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-09 12:55:00,378 INFO L351 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-11-09 12:55:00,407 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:55:00,407 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:55:00,407 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:55:00,408 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:55:00,408 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:55:00,408 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:55:00,408 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:55:00,408 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:55:00,409 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:55:00,409 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:55:00,409 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:55:00,409 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:55:00,410 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:55:00,410 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:55:00,410 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:55:00,410 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:55:00,411 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:55:00,411 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:55:00,411 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:55:00,411 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:55:00,412 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:55:00,412 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:55:00,412 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:55:00,412 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:55:00,414 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:55:00,415 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:55:00,415 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:55:00,415 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:55:00,423 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:55:00,424 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:55:00,424 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:55:00,424 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:55:00,428 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2020-11-09 12:55:00,444 INFO L253 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2020-11-09 12:55:00,478 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-09 12:55:00,479 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-09 12:55:00,479 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-09 12:55:00,480 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-09 12:55:00,480 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-09 12:55:00,480 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-09 12:55:00,480 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-09 12:55:00,480 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-09 12:55:00,496 INFO L120 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-11-09 12:55:00,498 INFO L135 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 69 places, 65 transitions, 140 flow [2020-11-09 12:55:00,502 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 69 places, 65 transitions, 140 flow [2020-11-09 12:55:00,504 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 69 places, 65 transitions, 140 flow [2020-11-09 12:55:00,574 INFO L129 PetriNetUnfolder]: 3/63 cut-off events. [2020-11-09 12:55:00,575 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-11-09 12:55:00,579 INFO L84 FinitePrefix]: Finished finitePrefix Result has 70 conditions, 63 events. 3/63 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 47 event pairs, 0 based on Foata normal form. 0/59 useless extension candidates. Maximal degree in co-relation 46. Up to 2 conditions per place. [2020-11-09 12:55:00,581 INFO L116 LiptonReduction]: Number of co-enabled transitions 792 [2020-11-09 12:55:03,731 WARN L194 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 46 [2020-11-09 12:55:03,979 WARN L194 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 46 [2020-11-09 12:55:04,755 WARN L194 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 52 [2020-11-09 12:55:04,962 WARN L194 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 52 [2020-11-09 12:55:05,074 WARN L194 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 52 [2020-11-09 12:55:05,442 WARN L194 SmtUtils]: Spent 348.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 74 [2020-11-09 12:55:05,608 WARN L194 SmtUtils]: Spent 161.00 ms on a formula simplification that was a NOOP. DAG size: 70 [2020-11-09 12:55:05,965 WARN L194 SmtUtils]: Spent 354.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 74 [2020-11-09 12:55:06,128 WARN L194 SmtUtils]: Spent 157.00 ms on a formula simplification that was a NOOP. DAG size: 70 [2020-11-09 12:55:06,181 INFO L131 LiptonReduction]: Checked pairs total: 1418 [2020-11-09 12:55:06,182 INFO L133 LiptonReduction]: Total number of compositions: 63 [2020-11-09 12:55:06,188 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 23 places, 17 transitions, 44 flow [2020-11-09 12:55:06,200 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 90 states. [2020-11-09 12:55:06,202 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states. [2020-11-09 12:55:06,208 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-11-09 12:55:06,208 INFO L414 BasicCegarLoop]: Found error trace [2020-11-09 12:55:06,209 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2020-11-09 12:55:06,209 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-09 12:55:06,215 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-09 12:55:06,215 INFO L82 PathProgramCache]: Analyzing trace with hash -1338798449, now seen corresponding path program 1 times [2020-11-09 12:55:06,225 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-09 12:55:06,225 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1358647408] [2020-11-09 12:55:06,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-09 12:55:06,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-09 12:55:06,478 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-09 12:55:06,480 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1358647408] [2020-11-09 12:55:06,481 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-09 12:55:06,481 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-09 12:55:06,482 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [298275992] [2020-11-09 12:55:06,488 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-11-09 12:55:06,488 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-09 12:55:06,506 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-11-09 12:55:06,507 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-09 12:55:06,509 INFO L87 Difference]: Start difference. First operand 90 states. Second operand 2 states. [2020-11-09 12:55:06,526 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-09 12:55:06,527 INFO L93 Difference]: Finished difference Result 90 states and 200 transitions. [2020-11-09 12:55:06,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-11-09 12:55:06,528 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 6 [2020-11-09 12:55:06,529 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-09 12:55:06,539 INFO L225 Difference]: With dead ends: 90 [2020-11-09 12:55:06,539 INFO L226 Difference]: Without dead ends: 74 [2020-11-09 12:55:06,541 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-09 12:55:06,560 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2020-11-09 12:55:06,580 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 74. [2020-11-09 12:55:06,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74 states. [2020-11-09 12:55:06,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 160 transitions. [2020-11-09 12:55:06,585 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 160 transitions. Word has length 6 [2020-11-09 12:55:06,585 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-09 12:55:06,586 INFO L481 AbstractCegarLoop]: Abstraction has 74 states and 160 transitions. [2020-11-09 12:55:06,586 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-11-09 12:55:06,586 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 160 transitions. [2020-11-09 12:55:06,587 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-11-09 12:55:06,587 INFO L414 BasicCegarLoop]: Found error trace [2020-11-09 12:55:06,587 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-11-09 12:55:06,587 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-09 12:55:06,588 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-09 12:55:06,588 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-09 12:55:06,588 INFO L82 PathProgramCache]: Analyzing trace with hash 1446900907, now seen corresponding path program 1 times [2020-11-09 12:55:06,589 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-09 12:55:06,589 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [256957674] [2020-11-09 12:55:06,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-09 12:55:06,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-09 12:55:06,732 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-09 12:55:06,732 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [256957674] [2020-11-09 12:55:06,733 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-09 12:55:06,733 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-09 12:55:06,733 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1939204247] [2020-11-09 12:55:06,735 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-09 12:55:06,735 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-09 12:55:06,736 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-09 12:55:06,736 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-09 12:55:06,737 INFO L87 Difference]: Start difference. First operand 74 states and 160 transitions. Second operand 4 states. [2020-11-09 12:55:06,805 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-09 12:55:06,805 INFO L93 Difference]: Finished difference Result 63 states and 112 transitions. [2020-11-09 12:55:06,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-09 12:55:06,806 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 7 [2020-11-09 12:55:06,806 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-09 12:55:06,807 INFO L225 Difference]: With dead ends: 63 [2020-11-09 12:55:06,807 INFO L226 Difference]: Without dead ends: 47 [2020-11-09 12:55:06,808 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-09 12:55:06,810 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2020-11-09 12:55:06,814 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 47. [2020-11-09 12:55:06,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2020-11-09 12:55:06,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 79 transitions. [2020-11-09 12:55:06,816 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 79 transitions. Word has length 7 [2020-11-09 12:55:06,816 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-09 12:55:06,817 INFO L481 AbstractCegarLoop]: Abstraction has 47 states and 79 transitions. [2020-11-09 12:55:06,817 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-09 12:55:06,817 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 79 transitions. [2020-11-09 12:55:06,818 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-11-09 12:55:06,818 INFO L414 BasicCegarLoop]: Found error trace [2020-11-09 12:55:06,818 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-09 12:55:06,818 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-09 12:55:06,819 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-09 12:55:06,819 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-09 12:55:06,819 INFO L82 PathProgramCache]: Analyzing trace with hash 1074461755, now seen corresponding path program 1 times [2020-11-09 12:55:06,819 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-09 12:55:06,820 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [687930957] [2020-11-09 12:55:06,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-09 12:55:06,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-09 12:55:06,958 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-09 12:55:06,959 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [687930957] [2020-11-09 12:55:06,959 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-09 12:55:06,959 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-09 12:55:06,959 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1700098916] [2020-11-09 12:55:06,960 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-09 12:55:06,960 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-09 12:55:06,961 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-09 12:55:06,962 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-11-09 12:55:06,962 INFO L87 Difference]: Start difference. First operand 47 states and 79 transitions. Second operand 5 states. [2020-11-09 12:55:07,031 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-09 12:55:07,031 INFO L93 Difference]: Finished difference Result 36 states and 55 transitions. [2020-11-09 12:55:07,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-09 12:55:07,032 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 10 [2020-11-09 12:55:07,032 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-09 12:55:07,033 INFO L225 Difference]: With dead ends: 36 [2020-11-09 12:55:07,033 INFO L226 Difference]: Without dead ends: 29 [2020-11-09 12:55:07,034 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-11-09 12:55:07,034 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2020-11-09 12:55:07,037 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2020-11-09 12:55:07,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2020-11-09 12:55:07,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 43 transitions. [2020-11-09 12:55:07,038 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 43 transitions. Word has length 10 [2020-11-09 12:55:07,038 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-09 12:55:07,039 INFO L481 AbstractCegarLoop]: Abstraction has 29 states and 43 transitions. [2020-11-09 12:55:07,039 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-09 12:55:07,039 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 43 transitions. [2020-11-09 12:55:07,039 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-11-09 12:55:07,040 INFO L414 BasicCegarLoop]: Found error trace [2020-11-09 12:55:07,040 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-09 12:55:07,040 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-11-09 12:55:07,040 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-09 12:55:07,041 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-09 12:55:07,041 INFO L82 PathProgramCache]: Analyzing trace with hash -1774648449, now seen corresponding path program 1 times [2020-11-09 12:55:07,041 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-09 12:55:07,041 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1178178093] [2020-11-09 12:55:07,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-09 12:55:07,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-09 12:55:07,152 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-09 12:55:07,153 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1178178093] [2020-11-09 12:55:07,153 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-09 12:55:07,153 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-09 12:55:07,153 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [286398868] [2020-11-09 12:55:07,154 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-09 12:55:07,154 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-09 12:55:07,155 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-09 12:55:07,155 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-09 12:55:07,155 INFO L87 Difference]: Start difference. First operand 29 states and 43 transitions. Second operand 5 states. [2020-11-09 12:55:07,207 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-09 12:55:07,208 INFO L93 Difference]: Finished difference Result 37 states and 52 transitions. [2020-11-09 12:55:07,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-09 12:55:07,208 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2020-11-09 12:55:07,209 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-09 12:55:07,209 INFO L225 Difference]: With dead ends: 37 [2020-11-09 12:55:07,209 INFO L226 Difference]: Without dead ends: 17 [2020-11-09 12:55:07,210 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-11-09 12:55:07,210 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2020-11-09 12:55:07,212 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2020-11-09 12:55:07,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2020-11-09 12:55:07,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 19 transitions. [2020-11-09 12:55:07,212 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 19 transitions. Word has length 13 [2020-11-09 12:55:07,213 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-09 12:55:07,213 INFO L481 AbstractCegarLoop]: Abstraction has 17 states and 19 transitions. [2020-11-09 12:55:07,213 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-09 12:55:07,213 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 19 transitions. [2020-11-09 12:55:07,214 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-11-09 12:55:07,214 INFO L414 BasicCegarLoop]: Found error trace [2020-11-09 12:55:07,214 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-09 12:55:07,214 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-11-09 12:55:07,214 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-09 12:55:07,215 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-09 12:55:07,215 INFO L82 PathProgramCache]: Analyzing trace with hash 290614237, now seen corresponding path program 2 times [2020-11-09 12:55:07,215 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-09 12:55:07,215 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [510972221] [2020-11-09 12:55:07,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-09 12:55:07,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-09 12:55:07,301 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-09 12:55:07,301 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [510972221] [2020-11-09 12:55:07,302 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-09 12:55:07,302 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-09 12:55:07,302 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [839096455] [2020-11-09 12:55:07,302 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-09 12:55:07,303 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-09 12:55:07,303 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-09 12:55:07,304 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-09 12:55:07,304 INFO L87 Difference]: Start difference. First operand 17 states and 19 transitions. Second operand 5 states. [2020-11-09 12:55:07,339 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-09 12:55:07,339 INFO L93 Difference]: Finished difference Result 16 states and 18 transitions. [2020-11-09 12:55:07,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-09 12:55:07,340 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2020-11-09 12:55:07,340 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-09 12:55:07,340 INFO L225 Difference]: With dead ends: 16 [2020-11-09 12:55:07,340 INFO L226 Difference]: Without dead ends: 0 [2020-11-09 12:55:07,341 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-11-09 12:55:07,341 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-11-09 12:55:07,341 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-11-09 12:55:07,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-11-09 12:55:07,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-11-09 12:55:07,342 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 13 [2020-11-09 12:55:07,342 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-09 12:55:07,342 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-09 12:55:07,342 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-09 12:55:07,342 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-11-09 12:55:07,342 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-11-09 12:55:07,343 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-11-09 12:55:07,346 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.11 12:55:07 BasicIcfg [2020-11-09 12:55:07,346 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-09 12:55:07,348 INFO L168 Benchmark]: Toolchain (without parser) took 8735.68 ms. Allocated memory was 155.2 MB in the beginning and 203.4 MB in the end (delta: 48.2 MB). Free memory was 128.9 MB in the beginning and 131.9 MB in the end (delta: -3.0 MB). Peak memory consumption was 46.8 MB. Max. memory is 8.0 GB. [2020-11-09 12:55:07,349 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 155.2 MB. Free memory was 127.6 MB in the beginning and 127.5 MB in the end (delta: 105.8 kB). There was no memory consumed. Max. memory is 8.0 GB. [2020-11-09 12:55:07,350 INFO L168 Benchmark]: CACSL2BoogieTranslator took 901.47 ms. Allocated memory is still 155.2 MB. Free memory was 128.3 MB in the beginning and 133.9 MB in the end (delta: -5.7 MB). Peak memory consumption was 31.1 MB. Max. memory is 8.0 GB. [2020-11-09 12:55:07,350 INFO L168 Benchmark]: Boogie Procedure Inliner took 93.23 ms. Allocated memory is still 155.2 MB. Free memory was 133.9 MB in the beginning and 131.9 MB in the end (delta: 2.1 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2020-11-09 12:55:07,351 INFO L168 Benchmark]: Boogie Preprocessor took 60.59 ms. Allocated memory is still 155.2 MB. Free memory was 131.9 MB in the beginning and 130.8 MB in the end (delta: 1.0 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2020-11-09 12:55:07,352 INFO L168 Benchmark]: RCFGBuilder took 667.26 ms. Allocated memory is still 155.2 MB. Free memory was 130.8 MB in the beginning and 110.9 MB in the end (delta: 19.9 MB). Peak memory consumption was 19.9 MB. Max. memory is 8.0 GB. [2020-11-09 12:55:07,353 INFO L168 Benchmark]: TraceAbstraction took 6997.70 ms. Allocated memory was 155.2 MB in the beginning and 203.4 MB in the end (delta: 48.2 MB). Free memory was 110.4 MB in the beginning and 131.9 MB in the end (delta: -21.5 MB). Peak memory consumption was 28.3 MB. Max. memory is 8.0 GB. [2020-11-09 12:55:07,357 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 155.2 MB. Free memory was 127.6 MB in the beginning and 127.5 MB in the end (delta: 105.8 kB). There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 901.47 ms. Allocated memory is still 155.2 MB. Free memory was 128.3 MB in the beginning and 133.9 MB in the end (delta: -5.7 MB). Peak memory consumption was 31.1 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 93.23 ms. Allocated memory is still 155.2 MB. Free memory was 133.9 MB in the beginning and 131.9 MB in the end (delta: 2.1 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 60.59 ms. Allocated memory is still 155.2 MB. Free memory was 131.9 MB in the beginning and 130.8 MB in the end (delta: 1.0 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 667.26 ms. Allocated memory is still 155.2 MB. Free memory was 130.8 MB in the beginning and 110.9 MB in the end (delta: 19.9 MB). Peak memory consumption was 19.9 MB. Max. memory is 8.0 GB. * TraceAbstraction took 6997.70 ms. Allocated memory was 155.2 MB in the beginning and 203.4 MB in the end (delta: 48.2 MB). Free memory was 110.4 MB in the beginning and 131.9 MB in the end (delta: -21.5 MB). Peak memory consumption was 28.3 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 525 VarBasedMoverChecksPositive, 22 VarBasedMoverChecksNegative, 5 SemBasedMoverChecksPositive, 17 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.2s, 36 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 5.6s, 69 PlacesBefore, 23 PlacesAfterwards, 65 TransitionsBefore, 17 TransitionsAfterwards, 792 CoEnabledTransitionPairs, 6 FixpointIterations, 17 TrivialSequentialCompositions, 37 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 7 ConcurrentYvCompositions, 2 ChoiceCompositions, 63 TotalNumberOfCompositions, 1418 MoverChecksTotal - PositiveResult [Line: 17]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 63 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 6.8s, OverallIterations: 5, TraceHistogramMax: 1, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 5.7s, HoareTripleCheckerStatistics: 71 SDtfs, 48 SDslu, 99 SDs, 0 SdLazy, 50 SolverSat, 6 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 23 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=90occurred in iteration=0, 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, 5 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 49 NumberOfCodeBlocks, 49 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 44 ConstructedInterpolants, 0 QuantifiedInterpolants, 1126 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 5 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 RESULT: Ultimate proved your program to be correct! Received shutdown request...