/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-SemanticLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/pthread-wmm/safe022_tso.i -------------------------------------------------------------------------------- This is Ultimate 0.2.2-wip.dk.repeated-lipton-a802222-m [2022-12-12 14:41:47,240 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-12 14:41:47,242 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-12 14:41:47,273 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-12 14:41:47,273 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-12 14:41:47,275 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-12 14:41:47,278 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-12 14:41:47,281 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-12 14:41:47,284 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-12 14:41:47,285 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-12 14:41:47,286 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-12 14:41:47,287 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-12 14:41:47,287 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-12 14:41:47,287 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-12 14:41:47,289 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-12 14:41:47,290 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-12 14:41:47,290 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-12 14:41:47,291 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-12 14:41:47,292 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-12 14:41:47,293 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-12 14:41:47,293 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-12 14:41:47,297 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-12 14:41:47,297 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-12 14:41:47,298 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-12 14:41:47,304 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-12 14:41:47,304 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-12 14:41:47,304 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-12 14:41:47,305 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-12 14:41:47,305 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-12 14:41:47,306 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-12 14:41:47,306 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-12 14:41:47,306 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-12 14:41:47,307 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-12 14:41:47,320 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-12 14:41:47,322 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-12 14:41:47,322 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-12 14:41:47,322 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-12 14:41:47,322 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-12 14:41:47,323 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-12 14:41:47,323 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-12 14:41:47,324 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-12 14:41:47,325 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-SemanticLbe.epf [2022-12-12 14:41:47,352 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-12 14:41:47,352 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-12 14:41:47,353 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-12 14:41:47,353 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-12 14:41:47,353 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-12 14:41:47,354 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-12 14:41:47,354 INFO L138 SettingsManager]: * Use SBE=true [2022-12-12 14:41:47,354 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-12 14:41:47,354 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-12 14:41:47,354 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-12 14:41:47,361 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-12 14:41:47,361 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-12 14:41:47,362 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-12 14:41:47,362 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-12 14:41:47,362 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-12 14:41:47,362 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-12 14:41:47,362 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-12 14:41:47,362 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-12 14:41:47,362 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-12 14:41:47,362 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-12 14:41:47,362 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-12 14:41:47,363 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-12-12 14:41:47,363 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-12 14:41:47,363 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-12 14:41:47,363 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-12 14:41:47,363 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-12 14:41:47,363 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-12 14:41:47,363 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-12 14:41:47,363 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-12 14:41:47,363 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-12 14:41:47,364 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-12-12 14:41:47,624 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-12 14:41:47,639 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-12 14:41:47,640 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-12 14:41:47,641 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-12 14:41:47,641 INFO L275 PluginConnector]: CDTParser initialized [2022-12-12 14:41:47,642 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe022_tso.i [2022-12-12 14:41:48,566 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-12 14:41:48,747 INFO L351 CDTParser]: Found 1 translation units. [2022-12-12 14:41:48,748 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe022_tso.i [2022-12-12 14:41:48,763 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/72983641b/c576cf6dc86f4f1fa9dc84cd36e9c370/FLAG8314e8579 [2022-12-12 14:41:48,779 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/72983641b/c576cf6dc86f4f1fa9dc84cd36e9c370 [2022-12-12 14:41:48,784 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-12 14:41:48,785 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-12-12 14:41:48,785 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-12 14:41:48,786 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-12 14:41:48,787 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-12 14:41:48,788 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.12 02:41:48" (1/1) ... [2022-12-12 14:41:48,788 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@11a8ba and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 02:41:48, skipping insertion in model container [2022-12-12 14:41:48,789 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.12 02:41:48" (1/1) ... [2022-12-12 14:41:48,793 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-12 14:41:48,822 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-12 14:41:48,917 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe022_tso.i[945,958] [2022-12-12 14:41:48,992 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 14:41:48,993 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 14:41:48,993 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 14:41:48,993 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 14:41:48,993 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 14:41:48,993 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 14:41:48,993 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 14:41:48,994 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 14:41:48,994 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 14:41:48,994 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 14:41:48,995 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 14:41:48,995 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 14:41:48,995 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 14:41:48,995 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 14:41:48,995 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 14:41:48,995 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 14:41:48,999 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 14:41:48,999 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 14:41:49,000 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 14:41:49,000 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 14:41:49,000 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 14:41:49,001 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 14:41:49,001 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-12 14:41:49,007 INFO L203 MainTranslator]: Completed pre-run [2022-12-12 14:41:49,015 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe022_tso.i[945,958] [2022-12-12 14:41:49,030 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 14:41:49,030 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 14:41:49,038 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 14:41:49,038 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 14:41:49,039 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 14:41:49,039 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 14:41:49,039 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 14:41:49,039 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 14:41:49,040 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 14:41:49,040 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 14:41:49,040 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 14:41:49,040 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 14:41:49,040 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 14:41:49,040 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 14:41:49,041 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 14:41:49,041 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 14:41:49,043 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 14:41:49,043 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 14:41:49,043 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 14:41:49,044 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 14:41:49,044 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 14:41:49,044 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 14:41:49,045 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-12 14:41:49,072 INFO L208 MainTranslator]: Completed translation [2022-12-12 14:41:49,073 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 02:41:49 WrapperNode [2022-12-12 14:41:49,073 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-12 14:41:49,074 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-12 14:41:49,074 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-12 14:41:49,075 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-12 14:41:49,079 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 02:41:49" (1/1) ... [2022-12-12 14:41:49,106 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 02:41:49" (1/1) ... [2022-12-12 14:41:49,124 INFO L138 Inliner]: procedures = 175, calls = 40, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 59 [2022-12-12 14:41:49,125 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-12 14:41:49,126 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-12 14:41:49,126 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-12 14:41:49,126 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-12 14:41:49,132 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 02:41:49" (1/1) ... [2022-12-12 14:41:49,133 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 02:41:49" (1/1) ... [2022-12-12 14:41:49,136 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 02:41:49" (1/1) ... [2022-12-12 14:41:49,137 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 02:41:49" (1/1) ... [2022-12-12 14:41:49,150 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 02:41:49" (1/1) ... [2022-12-12 14:41:49,152 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 02:41:49" (1/1) ... [2022-12-12 14:41:49,153 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 02:41:49" (1/1) ... [2022-12-12 14:41:49,153 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 02:41:49" (1/1) ... [2022-12-12 14:41:49,155 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-12 14:41:49,155 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-12 14:41:49,155 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-12 14:41:49,156 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-12 14:41:49,156 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 02:41:49" (1/1) ... [2022-12-12 14:41:49,165 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-12 14:41:49,173 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-12 14:41:49,208 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) [2022-12-12 14:41:49,232 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 [2022-12-12 14:41:49,255 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-12 14:41:49,255 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-12-12 14:41:49,255 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-12 14:41:49,256 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-12 14:41:49,256 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-12 14:41:49,256 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2022-12-12 14:41:49,256 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2022-12-12 14:41:49,256 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2022-12-12 14:41:49,256 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2022-12-12 14:41:49,257 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-12 14:41:49,257 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-12-12 14:41:49,257 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-12 14:41:49,257 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-12 14:41:49,258 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2022-12-12 14:41:49,400 INFO L236 CfgBuilder]: Building ICFG [2022-12-12 14:41:49,401 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-12 14:41:49,485 INFO L277 CfgBuilder]: Performing block encoding [2022-12-12 14:41:49,489 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-12 14:41:49,489 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2022-12-12 14:41:49,491 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.12 02:41:49 BoogieIcfgContainer [2022-12-12 14:41:49,491 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-12 14:41:49,492 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-12 14:41:49,492 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-12 14:41:49,494 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-12 14:41:49,494 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.12 02:41:48" (1/3) ... [2022-12-12 14:41:49,495 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2267612f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.12 02:41:49, skipping insertion in model container [2022-12-12 14:41:49,495 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 02:41:49" (2/3) ... [2022-12-12 14:41:49,495 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2267612f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.12 02:41:49, skipping insertion in model container [2022-12-12 14:41:49,495 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.12 02:41:49" (3/3) ... [2022-12-12 14:41:49,496 INFO L112 eAbstractionObserver]: Analyzing ICFG safe022_tso.i [2022-12-12 14:41:49,508 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-12 14:41:49,508 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-12-12 14:41:49,508 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-12-12 14:41:49,534 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-12-12 14:41:49,554 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 73 places, 68 transitions, 146 flow [2022-12-12 14:41:49,579 INFO L130 PetriNetUnfolder]: 2/66 cut-off events. [2022-12-12 14:41:49,579 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-12 14:41:49,582 INFO L83 FinitePrefix]: Finished finitePrefix Result has 73 conditions, 66 events. 2/66 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 36 event pairs, 0 based on Foata normal form. 0/63 useless extension candidates. Maximal degree in co-relation 47. Up to 2 conditions per place. [2022-12-12 14:41:49,582 INFO L82 GeneralOperation]: Start removeDead. Operand has 73 places, 68 transitions, 146 flow [2022-12-12 14:41:49,585 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 62 places, 56 transitions, 118 flow [2022-12-12 14:41:49,586 INFO L203 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-12-12 14:41:49,597 INFO L174 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 62 places, 56 transitions, 118 flow [2022-12-12 14:41:49,600 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 62 places, 56 transitions, 118 flow [2022-12-12 14:41:49,612 INFO L130 PetriNetUnfolder]: 1/56 cut-off events. [2022-12-12 14:41:49,613 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-12 14:41:49,613 INFO L83 FinitePrefix]: Finished finitePrefix Result has 63 conditions, 56 events. 1/56 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 27 event pairs, 0 based on Foata normal form. 0/55 useless extension candidates. Maximal degree in co-relation 37. Up to 2 conditions per place. [2022-12-12 14:41:49,614 INFO L222 LiptonReduction]: Starting Lipton reduction on Petri net that has 62 places, 56 transitions, 118 flow [2022-12-12 14:41:49,615 INFO L226 LiptonReduction]: Number of co-enabled transitions 540 [2022-12-12 14:41:51,066 INFO L241 LiptonReduction]: Total number of compositions: 44 [2022-12-12 14:41:51,076 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-12 14:41:51,080 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@43a04f18, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, Conditionality=CONDITIONAL_DISJUNCTIVE, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-12 14:41:51,081 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2022-12-12 14:41:51,084 INFO L130 PetriNetUnfolder]: 0/11 cut-off events. [2022-12-12 14:41:51,084 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-12 14:41:51,084 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 14:41:51,085 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2022-12-12 14:41:51,085 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-12 14:41:51,088 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 14:41:51,088 INFO L85 PathProgramCache]: Analyzing trace with hash -1567709208, now seen corresponding path program 1 times [2022-12-12 14:41:51,094 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 14:41:51,094 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1151168331] [2022-12-12 14:41:51,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 14:41:51,095 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 14:41:51,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 14:41:51,583 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 14:41:51,584 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 14:41:51,584 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1151168331] [2022-12-12 14:41:51,584 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1151168331] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 14:41:51,584 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 14:41:51,585 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-12 14:41:51,586 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [868331693] [2022-12-12 14:41:51,586 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 14:41:51,591 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-12 14:41:51,591 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 14:41:51,607 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-12 14:41:51,637 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-12 14:41:51,638 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 19 [2022-12-12 14:41:51,639 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 25 places, 19 transitions, 44 flow. Second operand has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 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) [2022-12-12 14:41:51,639 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 14:41:51,639 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 19 [2022-12-12 14:41:51,640 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 14:41:51,705 INFO L130 PetriNetUnfolder]: 73/153 cut-off events. [2022-12-12 14:41:51,706 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-12 14:41:51,707 INFO L83 FinitePrefix]: Finished finitePrefix Result has 305 conditions, 153 events. 73/153 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 610 event pairs, 21 based on Foata normal form. 4/128 useless extension candidates. Maximal degree in co-relation 295. Up to 113 conditions per place. [2022-12-12 14:41:51,713 INFO L137 encePairwiseOnDemand]: 15/19 looper letters, 15 selfloop transitions, 2 changer transitions 0/22 dead transitions. [2022-12-12 14:41:51,713 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 27 places, 22 transitions, 84 flow [2022-12-12 14:41:51,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-12 14:41:51,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-12 14:41:51,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 35 transitions. [2022-12-12 14:41:51,721 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.6140350877192983 [2022-12-12 14:41:51,722 INFO L175 Difference]: Start difference. First operand has 25 places, 19 transitions, 44 flow. Second operand 3 states and 35 transitions. [2022-12-12 14:41:51,723 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 27 places, 22 transitions, 84 flow [2022-12-12 14:41:51,724 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 25 places, 22 transitions, 82 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-12-12 14:41:51,726 INFO L231 Difference]: Finished difference. Result has 26 places, 18 transitions, 48 flow [2022-12-12 14:41:51,727 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=19, PETRI_DIFFERENCE_MINUEND_FLOW=40, PETRI_DIFFERENCE_MINUEND_PLACES=23, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=18, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=48, PETRI_PLACES=26, PETRI_TRANSITIONS=18} [2022-12-12 14:41:51,731 INFO L295 CegarLoopForPetriNet]: 25 programPoint places, 1 predicate places. [2022-12-12 14:41:51,732 INFO L495 AbstractCegarLoop]: Abstraction has has 26 places, 18 transitions, 48 flow [2022-12-12 14:41:51,732 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 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) [2022-12-12 14:41:51,732 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 14:41:51,732 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-12-12 14:41:51,732 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-12 14:41:51,732 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-12 14:41:51,733 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 14:41:51,734 INFO L85 PathProgramCache]: Analyzing trace with hash -1354345053, now seen corresponding path program 1 times [2022-12-12 14:41:51,734 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 14:41:51,735 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [905801399] [2022-12-12 14:41:51,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 14:41:51,735 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 14:41:51,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 14:41:51,830 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 14:41:51,830 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 14:41:51,830 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [905801399] [2022-12-12 14:41:51,830 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [905801399] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 14:41:51,830 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 14:41:51,830 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-12 14:41:51,831 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2132428315] [2022-12-12 14:41:51,831 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 14:41:51,832 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-12 14:41:51,832 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 14:41:51,832 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-12 14:41:51,832 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-12 14:41:51,832 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 19 [2022-12-12 14:41:51,832 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 26 places, 18 transitions, 48 flow. Second operand has 4 states, 4 states have (on average 5.75) internal successors, (23), 4 states have internal predecessors, (23), 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) [2022-12-12 14:41:51,833 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 14:41:51,833 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 19 [2022-12-12 14:41:51,833 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 14:41:51,897 INFO L130 PetriNetUnfolder]: 98/202 cut-off events. [2022-12-12 14:41:51,897 INFO L131 PetriNetUnfolder]: For 26/26 co-relation queries the response was YES. [2022-12-12 14:41:51,898 INFO L83 FinitePrefix]: Finished finitePrefix Result has 440 conditions, 202 events. 98/202 cut-off events. For 26/26 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 754 event pairs, 17 based on Foata normal form. 5/174 useless extension candidates. Maximal degree in co-relation 429. Up to 97 conditions per place. [2022-12-12 14:41:51,899 INFO L137 encePairwiseOnDemand]: 14/19 looper letters, 23 selfloop transitions, 6 changer transitions 0/33 dead transitions. [2022-12-12 14:41:51,899 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 30 places, 33 transitions, 143 flow [2022-12-12 14:41:51,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-12 14:41:51,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-12-12 14:41:51,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 51 transitions. [2022-12-12 14:41:51,906 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.5368421052631579 [2022-12-12 14:41:51,907 INFO L175 Difference]: Start difference. First operand has 26 places, 18 transitions, 48 flow. Second operand 5 states and 51 transitions. [2022-12-12 14:41:51,907 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 30 places, 33 transitions, 143 flow [2022-12-12 14:41:51,907 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 28 places, 33 transitions, 137 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-12-12 14:41:51,908 INFO L231 Difference]: Finished difference. Result has 30 places, 22 transitions, 79 flow [2022-12-12 14:41:51,908 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=19, PETRI_DIFFERENCE_MINUEND_FLOW=44, PETRI_DIFFERENCE_MINUEND_PLACES=24, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=18, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=79, PETRI_PLACES=30, PETRI_TRANSITIONS=22} [2022-12-12 14:41:51,908 INFO L295 CegarLoopForPetriNet]: 25 programPoint places, 5 predicate places. [2022-12-12 14:41:51,909 INFO L495 AbstractCegarLoop]: Abstraction has has 30 places, 22 transitions, 79 flow [2022-12-12 14:41:51,909 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.75) internal successors, (23), 4 states have internal predecessors, (23), 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) [2022-12-12 14:41:51,909 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 14:41:51,909 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 14:41:51,909 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-12 14:41:51,909 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-12 14:41:51,910 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 14:41:51,910 INFO L85 PathProgramCache]: Analyzing trace with hash 964974999, now seen corresponding path program 1 times [2022-12-12 14:41:51,910 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 14:41:51,910 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [683649365] [2022-12-12 14:41:51,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 14:41:51,910 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 14:41:51,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 14:41:52,050 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 14:41:52,050 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 14:41:52,053 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [683649365] [2022-12-12 14:41:52,053 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [683649365] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 14:41:52,054 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 14:41:52,054 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-12 14:41:52,054 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2126653941] [2022-12-12 14:41:52,054 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 14:41:52,054 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-12 14:41:52,054 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 14:41:52,055 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-12 14:41:52,055 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-12-12 14:41:52,055 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 19 [2022-12-12 14:41:52,056 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 22 transitions, 79 flow. Second operand has 5 states, 5 states have (on average 5.6) internal successors, (28), 5 states have internal predecessors, (28), 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) [2022-12-12 14:41:52,056 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 14:41:52,056 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 19 [2022-12-12 14:41:52,056 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 14:41:52,128 INFO L130 PetriNetUnfolder]: 103/225 cut-off events. [2022-12-12 14:41:52,128 INFO L131 PetriNetUnfolder]: For 161/161 co-relation queries the response was YES. [2022-12-12 14:41:52,130 INFO L83 FinitePrefix]: Finished finitePrefix Result has 553 conditions, 225 events. 103/225 cut-off events. For 161/161 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 949 event pairs, 40 based on Foata normal form. 15/197 useless extension candidates. Maximal degree in co-relation 540. Up to 82 conditions per place. [2022-12-12 14:41:52,132 INFO L137 encePairwiseOnDemand]: 15/19 looper letters, 17 selfloop transitions, 3 changer transitions 9/32 dead transitions. [2022-12-12 14:41:52,132 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 32 transitions, 157 flow [2022-12-12 14:41:52,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-12 14:41:52,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-12-12 14:41:52,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 45 transitions. [2022-12-12 14:41:52,134 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.5921052631578947 [2022-12-12 14:41:52,134 INFO L175 Difference]: Start difference. First operand has 30 places, 22 transitions, 79 flow. Second operand 4 states and 45 transitions. [2022-12-12 14:41:52,135 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 32 transitions, 157 flow [2022-12-12 14:41:52,137 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 32 transitions, 157 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-12-12 14:41:52,138 INFO L231 Difference]: Finished difference. Result has 35 places, 17 transitions, 72 flow [2022-12-12 14:41:52,138 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=19, PETRI_DIFFERENCE_MINUEND_FLOW=79, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=72, PETRI_PLACES=35, PETRI_TRANSITIONS=17} [2022-12-12 14:41:52,139 INFO L295 CegarLoopForPetriNet]: 25 programPoint places, 10 predicate places. [2022-12-12 14:41:52,139 INFO L495 AbstractCegarLoop]: Abstraction has has 35 places, 17 transitions, 72 flow [2022-12-12 14:41:52,139 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.6) internal successors, (28), 5 states have internal predecessors, (28), 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) [2022-12-12 14:41:52,139 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 14:41:52,139 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 14:41:52,140 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-12-12 14:41:52,140 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-12 14:41:52,140 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 14:41:52,140 INFO L85 PathProgramCache]: Analyzing trace with hash 1883331204, now seen corresponding path program 1 times [2022-12-12 14:41:52,140 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 14:41:52,141 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1603152033] [2022-12-12 14:41:52,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 14:41:52,141 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 14:41:52,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 14:41:52,247 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 14:41:52,248 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 14:41:52,248 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1603152033] [2022-12-12 14:41:52,249 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1603152033] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 14:41:52,249 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 14:41:52,249 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-12 14:41:52,249 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2079297303] [2022-12-12 14:41:52,249 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 14:41:52,249 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-12 14:41:52,249 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 14:41:52,250 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-12 14:41:52,251 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-12 14:41:52,255 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 19 [2022-12-12 14:41:52,255 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 17 transitions, 72 flow. Second operand has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 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) [2022-12-12 14:41:52,255 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 14:41:52,255 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 19 [2022-12-12 14:41:52,255 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 14:41:52,292 INFO L130 PetriNetUnfolder]: 59/128 cut-off events. [2022-12-12 14:41:52,292 INFO L131 PetriNetUnfolder]: For 220/220 co-relation queries the response was YES. [2022-12-12 14:41:52,293 INFO L83 FinitePrefix]: Finished finitePrefix Result has 390 conditions, 128 events. 59/128 cut-off events. For 220/220 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 478 event pairs, 20 based on Foata normal form. 3/82 useless extension candidates. Maximal degree in co-relation 373. Up to 115 conditions per place. [2022-12-12 14:41:52,294 INFO L137 encePairwiseOnDemand]: 11/19 looper letters, 16 selfloop transitions, 7 changer transitions 0/26 dead transitions. [2022-12-12 14:41:52,294 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 26 transitions, 145 flow [2022-12-12 14:41:52,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-12 14:41:52,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-12 14:41:52,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 36 transitions. [2022-12-12 14:41:52,295 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.631578947368421 [2022-12-12 14:41:52,295 INFO L175 Difference]: Start difference. First operand has 35 places, 17 transitions, 72 flow. Second operand 3 states and 36 transitions. [2022-12-12 14:41:52,296 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 26 transitions, 145 flow [2022-12-12 14:41:52,298 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 26 places, 26 transitions, 112 flow, removed 5 selfloop flow, removed 9 redundant places. [2022-12-12 14:41:52,298 INFO L231 Difference]: Finished difference. Result has 27 places, 23 transitions, 91 flow [2022-12-12 14:41:52,298 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=19, PETRI_DIFFERENCE_MINUEND_FLOW=44, PETRI_DIFFERENCE_MINUEND_PLACES=24, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=17, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=10, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=91, PETRI_PLACES=27, PETRI_TRANSITIONS=23} [2022-12-12 14:41:52,300 INFO L295 CegarLoopForPetriNet]: 25 programPoint places, 2 predicate places. [2022-12-12 14:41:52,300 INFO L495 AbstractCegarLoop]: Abstraction has has 27 places, 23 transitions, 91 flow [2022-12-12 14:41:52,300 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 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) [2022-12-12 14:41:52,300 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 14:41:52,300 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 14:41:52,300 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-12-12 14:41:52,301 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-12 14:41:52,301 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 14:41:52,301 INFO L85 PathProgramCache]: Analyzing trace with hash -1788151403, now seen corresponding path program 1 times [2022-12-12 14:41:52,301 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 14:41:52,301 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1390937451] [2022-12-12 14:41:52,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 14:41:52,301 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 14:41:52,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 14:41:52,397 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 14:41:52,397 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 14:41:52,397 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1390937451] [2022-12-12 14:41:52,398 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1390937451] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 14:41:52,398 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 14:41:52,398 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-12 14:41:52,398 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2079053683] [2022-12-12 14:41:52,398 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 14:41:52,398 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-12 14:41:52,398 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 14:41:52,399 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-12 14:41:52,399 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-12-12 14:41:52,400 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 19 [2022-12-12 14:41:52,400 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 27 places, 23 transitions, 91 flow. Second operand has 4 states, 4 states have (on average 6.25) internal successors, (25), 4 states have internal predecessors, (25), 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) [2022-12-12 14:41:52,400 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 14:41:52,400 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 19 [2022-12-12 14:41:52,400 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 14:41:52,437 INFO L130 PetriNetUnfolder]: 20/74 cut-off events. [2022-12-12 14:41:52,438 INFO L131 PetriNetUnfolder]: For 11/23 co-relation queries the response was YES. [2022-12-12 14:41:52,438 INFO L83 FinitePrefix]: Finished finitePrefix Result has 233 conditions, 74 events. 20/74 cut-off events. For 11/23 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 258 event pairs, 2 based on Foata normal form. 11/60 useless extension candidates. Maximal degree in co-relation 221. Up to 43 conditions per place. [2022-12-12 14:41:52,439 INFO L137 encePairwiseOnDemand]: 11/19 looper letters, 10 selfloop transitions, 13 changer transitions 0/26 dead transitions. [2022-12-12 14:41:52,439 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 30 places, 26 transitions, 147 flow [2022-12-12 14:41:52,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-12 14:41:52,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-12-12 14:41:52,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 40 transitions. [2022-12-12 14:41:52,440 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.5263157894736842 [2022-12-12 14:41:52,440 INFO L175 Difference]: Start difference. First operand has 27 places, 23 transitions, 91 flow. Second operand 4 states and 40 transitions. [2022-12-12 14:41:52,440 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 30 places, 26 transitions, 147 flow [2022-12-12 14:41:52,440 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 28 places, 26 transitions, 135 flow, removed 1 selfloop flow, removed 2 redundant places. [2022-12-12 14:41:52,441 INFO L231 Difference]: Finished difference. Result has 29 places, 23 transitions, 120 flow [2022-12-12 14:41:52,441 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=19, PETRI_DIFFERENCE_MINUEND_FLOW=80, PETRI_DIFFERENCE_MINUEND_PLACES=25, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=10, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=120, PETRI_PLACES=29, PETRI_TRANSITIONS=23} [2022-12-12 14:41:52,443 INFO L295 CegarLoopForPetriNet]: 25 programPoint places, 4 predicate places. [2022-12-12 14:41:52,443 INFO L495 AbstractCegarLoop]: Abstraction has has 29 places, 23 transitions, 120 flow [2022-12-12 14:41:52,443 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.25) internal successors, (25), 4 states have internal predecessors, (25), 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) [2022-12-12 14:41:52,443 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 14:41:52,443 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 14:41:52,444 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-12-12 14:41:52,444 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-12 14:41:52,444 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 14:41:52,444 INFO L85 PathProgramCache]: Analyzing trace with hash -423372608, now seen corresponding path program 1 times [2022-12-12 14:41:52,445 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 14:41:52,445 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2034455197] [2022-12-12 14:41:52,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 14:41:52,449 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 14:41:52,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 14:41:52,565 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 14:41:52,565 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 14:41:52,568 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2034455197] [2022-12-12 14:41:52,568 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2034455197] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 14:41:52,568 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 14:41:52,568 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-12 14:41:52,568 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [820252820] [2022-12-12 14:41:52,568 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 14:41:52,569 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-12 14:41:52,569 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 14:41:52,570 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-12 14:41:52,570 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-12 14:41:52,570 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 19 [2022-12-12 14:41:52,570 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 29 places, 23 transitions, 120 flow. Second operand has 4 states, 4 states have (on average 7.25) internal successors, (29), 4 states have internal predecessors, (29), 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) [2022-12-12 14:41:52,570 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 14:41:52,570 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 19 [2022-12-12 14:41:52,570 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 14:41:52,593 INFO L130 PetriNetUnfolder]: 19/66 cut-off events. [2022-12-12 14:41:52,593 INFO L131 PetriNetUnfolder]: For 60/64 co-relation queries the response was YES. [2022-12-12 14:41:52,594 INFO L83 FinitePrefix]: Finished finitePrefix Result has 242 conditions, 66 events. 19/66 cut-off events. For 60/64 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 198 event pairs, 2 based on Foata normal form. 13/67 useless extension candidates. Maximal degree in co-relation 229. Up to 44 conditions per place. [2022-12-12 14:41:52,594 INFO L137 encePairwiseOnDemand]: 14/19 looper letters, 0 selfloop transitions, 0 changer transitions 26/26 dead transitions. [2022-12-12 14:41:52,594 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 26 transitions, 178 flow [2022-12-12 14:41:52,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-12 14:41:52,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-12-12 14:41:52,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 42 transitions. [2022-12-12 14:41:52,595 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.4421052631578947 [2022-12-12 14:41:52,595 INFO L175 Difference]: Start difference. First operand has 29 places, 23 transitions, 120 flow. Second operand 5 states and 42 transitions. [2022-12-12 14:41:52,595 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 32 places, 26 transitions, 178 flow [2022-12-12 14:41:52,597 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 26 transitions, 150 flow, removed 6 selfloop flow, removed 2 redundant places. [2022-12-12 14:41:52,597 INFO L231 Difference]: Finished difference. Result has 30 places, 0 transitions, 0 flow [2022-12-12 14:41:52,597 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=19, PETRI_DIFFERENCE_MINUEND_FLOW=92, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=0, PETRI_PLACES=30, PETRI_TRANSITIONS=0} [2022-12-12 14:41:52,599 INFO L295 CegarLoopForPetriNet]: 25 programPoint places, 5 predicate places. [2022-12-12 14:41:52,599 INFO L495 AbstractCegarLoop]: Abstraction has has 30 places, 0 transitions, 0 flow [2022-12-12 14:41:52,600 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.25) internal successors, (29), 4 states have internal predecessors, (29), 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) [2022-12-12 14:41:52,604 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining) [2022-12-12 14:41:52,605 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 3 remaining) [2022-12-12 14:41:52,605 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 3 remaining) [2022-12-12 14:41:52,605 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-12-12 14:41:52,605 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1] [2022-12-12 14:41:52,607 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-12-12 14:41:52,607 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-12-12 14:41:52,609 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.12 02:41:52 BasicIcfg [2022-12-12 14:41:52,609 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-12-12 14:41:52,611 INFO L158 Benchmark]: Toolchain (without parser) took 3824.72ms. Allocated memory was 189.8MB in the beginning and 237.0MB in the end (delta: 47.2MB). Free memory was 153.5MB in the beginning and 185.5MB in the end (delta: -32.0MB). Peak memory consumption was 16.0MB. Max. memory is 8.0GB. [2022-12-12 14:41:52,613 INFO L158 Benchmark]: CDTParser took 0.11ms. Allocated memory is still 189.8MB. Free memory was 167.6MB in the beginning and 167.5MB in the end (delta: 67.0kB). There was no memory consumed. Max. memory is 8.0GB. [2022-12-12 14:41:52,613 INFO L158 Benchmark]: CACSL2BoogieTranslator took 287.80ms. Allocated memory is still 189.8MB. Free memory was 153.5MB in the beginning and 131.2MB in the end (delta: 22.3MB). Peak memory consumption was 22.0MB. Max. memory is 8.0GB. [2022-12-12 14:41:52,613 INFO L158 Benchmark]: Boogie Procedure Inliner took 50.66ms. Allocated memory is still 189.8MB. Free memory was 131.2MB in the beginning and 129.1MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-12-12 14:41:52,613 INFO L158 Benchmark]: Boogie Preprocessor took 29.27ms. Allocated memory is still 189.8MB. Free memory was 129.1MB in the beginning and 127.6MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-12-12 14:41:52,614 INFO L158 Benchmark]: RCFGBuilder took 335.45ms. Allocated memory is still 189.8MB. Free memory was 127.6MB in the beginning and 115.0MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. [2022-12-12 14:41:52,615 INFO L158 Benchmark]: TraceAbstraction took 3116.71ms. Allocated memory was 189.8MB in the beginning and 237.0MB in the end (delta: 47.2MB). Free memory was 113.4MB in the beginning and 185.5MB in the end (delta: -72.1MB). There was no memory consumed. Max. memory is 8.0GB. [2022-12-12 14:41:52,616 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 189.8MB. Free memory was 167.6MB in the beginning and 167.5MB in the end (delta: 67.0kB). There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 287.80ms. Allocated memory is still 189.8MB. Free memory was 153.5MB in the beginning and 131.2MB in the end (delta: 22.3MB). Peak memory consumption was 22.0MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 50.66ms. Allocated memory is still 189.8MB. Free memory was 131.2MB in the beginning and 129.1MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 29.27ms. Allocated memory is still 189.8MB. Free memory was 129.1MB in the beginning and 127.6MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 335.45ms. Allocated memory is still 189.8MB. Free memory was 127.6MB in the beginning and 115.0MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. * TraceAbstraction took 3116.71ms. Allocated memory was 189.8MB in the beginning and 237.0MB in the end (delta: 47.2MB). Free memory was 113.4MB in the beginning and 185.5MB in the end (delta: -72.1MB). There was no memory consumed. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 1.5s, 62 PlacesBefore, 25 PlacesAfterwards, 56 TransitionsBefore, 19 TransitionsAfterwards, 540 CoEnabledTransitionPairs, 2 FixpointIterations, 0 TrivialSequentialCompositions, 1 ConcurrentSequentialCompositions, 19 TrivialYvCompositions, 24 ConcurrentYvCompositions, 0 ChoiceCompositions, 44 TotalNumberOfCompositions, Independence Relation Statistics: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 622, independent: 584, independent conditional: 584, independent unconditional: 0, dependent: 38, dependent conditional: 38, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: DisjunctiveConditionalIndependenceRelation.Independence Queries: [ total: 622, independent: 584, independent conditional: 0, independent unconditional: 584, dependent: 38, dependent conditional: 0, dependent unconditional: 38, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , DisjunctiveConditionalIndependenceRelation.Statistics on underlying relation: SemanticConditionEliminator.Independence Queries: [ total: 622, independent: 584, independent conditional: 0, independent unconditional: 584, dependent: 38, dependent conditional: 0, dependent unconditional: 38, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticConditionEliminator.Statistics on underlying relation: CachedIndependenceRelation.Independence Queries: [ total: 622, independent: 584, independent conditional: 0, independent unconditional: 584, dependent: 38, dependent conditional: 0, dependent unconditional: 38, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 433, independent: 407, independent conditional: 0, independent unconditional: 407, dependent: 26, dependent conditional: 0, dependent unconditional: 26, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 433, independent: 404, independent conditional: 0, independent unconditional: 404, dependent: 29, dependent conditional: 0, dependent unconditional: 29, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 29, independent: 3, independent conditional: 0, independent unconditional: 3, dependent: 26, dependent conditional: 0, dependent unconditional: 26, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 75, independent: 17, independent conditional: 0, independent unconditional: 17, dependent: 58, dependent conditional: 0, dependent unconditional: 58, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 622, independent: 177, independent conditional: 0, independent unconditional: 177, dependent: 12, dependent conditional: 0, dependent unconditional: 12, unknown: 433, unknown conditional: 0, unknown unconditional: 433] , Statistics on independence cache: Total cache size (in pairs): 707, Positive cache size: 681, Positive conditional cache size: 0, Positive unconditional cache size: 681, Negative cache size: 26, Negative conditional cache size: 0, Negative unconditional cache size: 26, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0, Eliminated conditions: 0, Maximal queried relation: -1 - PositiveResult [Line: 18]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 83 locations, 3 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 3.1s, OverallIterations: 6, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.5s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 83 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 83 mSDsluCounter, 9 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 3 mSDsCounter, 11 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 167 IncrementalHoareTripleChecker+Invalid, 178 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 11 mSolverCounterUnsat, 6 mSDtfsCounter, 167 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 17 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=120occurred in iteration=5, InterpolantAutomatonStates: 24, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.7s InterpolantComputationTime, 52 NumberOfCodeBlocks, 52 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 46 ConstructedInterpolants, 0 QuantifiedInterpolants, 193 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 6 InterpolantComputations, 6 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! [2022-12-12 14:41:52,631 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...