/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/weaver/chl-time-subst.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-wip.dk.repeated-lipton-8d0d62b [2022-12-05 21:07:01,111 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-05 21:07:01,113 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-05 21:07:01,149 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-05 21:07:01,150 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-05 21:07:01,152 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-05 21:07:01,155 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-05 21:07:01,158 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-05 21:07:01,162 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-05 21:07:01,168 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-05 21:07:01,169 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-05 21:07:01,170 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-05 21:07:01,171 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-05 21:07:01,173 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-05 21:07:01,174 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-05 21:07:01,176 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-05 21:07:01,177 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-05 21:07:01,178 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-05 21:07:01,180 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-05 21:07:01,184 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-05 21:07:01,185 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-05 21:07:01,186 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-05 21:07:01,187 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-05 21:07:01,188 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-05 21:07:01,194 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-05 21:07:01,194 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-05 21:07:01,195 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-05 21:07:01,196 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-05 21:07:01,196 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-05 21:07:01,197 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-05 21:07:01,197 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-05 21:07:01,207 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-05 21:07:01,209 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-05 21:07:01,209 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-05 21:07:01,210 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-05 21:07:01,210 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-05 21:07:01,211 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-05 21:07:01,211 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-05 21:07:01,211 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-05 21:07:01,212 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-05 21:07:01,212 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-05 21:07:01,213 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 [2022-12-05 21:07:01,241 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-05 21:07:01,242 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-05 21:07:01,243 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-05 21:07:01,243 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-05 21:07:01,244 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-05 21:07:01,244 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-05 21:07:01,245 INFO L138 SettingsManager]: * Use SBE=true [2022-12-05 21:07:01,245 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-05 21:07:01,245 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-05 21:07:01,245 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-05 21:07:01,246 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-05 21:07:01,246 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-05 21:07:01,246 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-05 21:07:01,246 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-05 21:07:01,246 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-05 21:07:01,246 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-05 21:07:01,247 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-05 21:07:01,247 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-05 21:07:01,247 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-05 21:07:01,247 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-05 21:07:01,247 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-05 21:07:01,247 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-12-05 21:07:01,248 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-05 21:07:01,248 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-05 21:07:01,248 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-05 21:07:01,248 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-05 21:07:01,248 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-05 21:07:01,248 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-05 21:07:01,248 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-05 21:07:01,248 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-05 21:07:01,249 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-12-05 21:07:01,525 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-05 21:07:01,541 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-05 21:07:01,544 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-05 21:07:01,545 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-05 21:07:01,547 INFO L275 PluginConnector]: CDTParser initialized [2022-12-05 21:07:01,548 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/chl-time-subst.wvr.c [2022-12-05 21:07:02,610 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-05 21:07:02,811 INFO L351 CDTParser]: Found 1 translation units. [2022-12-05 21:07:02,811 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/chl-time-subst.wvr.c [2022-12-05 21:07:02,817 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/79cf75c4d/d7ed279cbdcb456ba27781c2883ae08a/FLAG09d2c6300 [2022-12-05 21:07:02,831 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/79cf75c4d/d7ed279cbdcb456ba27781c2883ae08a [2022-12-05 21:07:02,833 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-05 21:07:02,834 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-12-05 21:07:02,837 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-05 21:07:02,837 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-05 21:07:02,839 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-05 21:07:02,840 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.12 09:07:02" (1/1) ... [2022-12-05 21:07:02,841 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7c7fd721 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:07:02, skipping insertion in model container [2022-12-05 21:07:02,841 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.12 09:07:02" (1/1) ... [2022-12-05 21:07:02,847 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-05 21:07:02,877 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-05 21:07:03,031 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 21:07:03,035 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 21:07:03,037 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 21:07:03,039 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 21:07:03,040 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 21:07:03,041 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 21:07:03,061 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/chl-time-subst.wvr.c[2879,2892] [2022-12-05 21:07:03,071 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-05 21:07:03,079 INFO L203 MainTranslator]: Completed pre-run [2022-12-05 21:07:03,094 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 21:07:03,096 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 21:07:03,097 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 21:07:03,098 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 21:07:03,099 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 21:07:03,100 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 21:07:03,116 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/chl-time-subst.wvr.c[2879,2892] [2022-12-05 21:07:03,118 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-05 21:07:03,133 INFO L208 MainTranslator]: Completed translation [2022-12-05 21:07:03,133 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:07:03 WrapperNode [2022-12-05 21:07:03,134 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-05 21:07:03,135 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-05 21:07:03,135 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-05 21:07:03,135 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-05 21:07:03,141 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:07:03" (1/1) ... [2022-12-05 21:07:03,158 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:07:03" (1/1) ... [2022-12-05 21:07:03,195 INFO L138 Inliner]: procedures = 23, calls = 39, calls flagged for inlining = 11, calls inlined = 21, statements flattened = 214 [2022-12-05 21:07:03,195 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-05 21:07:03,196 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-05 21:07:03,197 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-05 21:07:03,197 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-05 21:07:03,204 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:07:03" (1/1) ... [2022-12-05 21:07:03,204 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:07:03" (1/1) ... [2022-12-05 21:07:03,217 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:07:03" (1/1) ... [2022-12-05 21:07:03,217 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:07:03" (1/1) ... [2022-12-05 21:07:03,223 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:07:03" (1/1) ... [2022-12-05 21:07:03,225 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:07:03" (1/1) ... [2022-12-05 21:07:03,226 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:07:03" (1/1) ... [2022-12-05 21:07:03,228 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:07:03" (1/1) ... [2022-12-05 21:07:03,230 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-05 21:07:03,231 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-05 21:07:03,231 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-05 21:07:03,231 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-05 21:07:03,231 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:07:03" (1/1) ... [2022-12-05 21:07:03,236 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-05 21:07:03,252 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-05 21:07:03,268 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) [2022-12-05 21:07:03,290 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 [2022-12-05 21:07:03,313 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-05 21:07:03,313 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-12-05 21:07:03,313 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-12-05 21:07:03,313 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-12-05 21:07:03,314 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-12-05 21:07:03,314 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-12-05 21:07:03,314 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-12-05 21:07:03,314 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-05 21:07:03,314 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-05 21:07:03,314 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-05 21:07:03,315 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-12-05 21:07:03,315 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-12-05 21:07:03,315 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-05 21:07:03,315 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-05 21:07:03,315 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-12-05 21:07:03,315 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-05 21:07:03,317 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2022-12-05 21:07:03,414 INFO L236 CfgBuilder]: Building ICFG [2022-12-05 21:07:03,416 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-05 21:07:03,774 INFO L277 CfgBuilder]: Performing block encoding [2022-12-05 21:07:04,170 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-05 21:07:04,170 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2022-12-05 21:07:04,172 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.12 09:07:04 BoogieIcfgContainer [2022-12-05 21:07:04,172 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-05 21:07:04,174 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-05 21:07:04,174 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-05 21:07:04,177 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-05 21:07:04,177 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 05.12 09:07:02" (1/3) ... [2022-12-05 21:07:04,179 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@34a60679 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.12 09:07:04, skipping insertion in model container [2022-12-05 21:07:04,179 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:07:03" (2/3) ... [2022-12-05 21:07:04,189 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@34a60679 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.12 09:07:04, skipping insertion in model container [2022-12-05 21:07:04,190 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.12 09:07:04" (3/3) ... [2022-12-05 21:07:04,202 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-time-subst.wvr.c [2022-12-05 21:07:04,219 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-05 21:07:04,219 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-12-05 21:07:04,219 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-12-05 21:07:04,286 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-12-05 21:07:04,321 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 114 places, 105 transitions, 234 flow [2022-12-05 21:07:04,406 INFO L130 PetriNetUnfolder]: 1/102 cut-off events. [2022-12-05 21:07:04,406 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-12-05 21:07:04,410 INFO L83 FinitePrefix]: Finished finitePrefix Result has 115 conditions, 102 events. 1/102 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 20 event pairs, 0 based on Foata normal form. 0/100 useless extension candidates. Maximal degree in co-relation 33. Up to 2 conditions per place. [2022-12-05 21:07:04,410 INFO L82 GeneralOperation]: Start removeDead. Operand has 114 places, 105 transitions, 234 flow [2022-12-05 21:07:04,415 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 101 places, 92 transitions, 202 flow [2022-12-05 21:07:04,416 INFO L195 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-12-05 21:07:04,438 INFO L167 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 101 places, 92 transitions, 202 flow [2022-12-05 21:07:04,445 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 101 places, 92 transitions, 202 flow [2022-12-05 21:07:04,489 INFO L130 PetriNetUnfolder]: 1/92 cut-off events. [2022-12-05 21:07:04,489 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-12-05 21:07:04,490 INFO L83 FinitePrefix]: Finished finitePrefix Result has 105 conditions, 92 events. 1/92 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 19 event pairs, 0 based on Foata normal form. 0/91 useless extension candidates. Maximal degree in co-relation 23. Up to 2 conditions per place. [2022-12-05 21:07:04,492 INFO L184 LiptonReduction]: Starting Lipton reduction on Petri net that has 101 places, 92 transitions, 202 flow [2022-12-05 21:07:04,492 INFO L188 LiptonReduction]: Number of co-enabled transitions 270 [2022-12-05 21:07:09,908 INFO L203 LiptonReduction]: Total number of compositions: 76 [2022-12-05 21:07:09,921 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-05 21:07:09,926 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;@31298569, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, Conditionality=CONDITIONAL_DISJUNCTIVE, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-05 21:07:09,927 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2022-12-05 21:07:09,933 INFO L130 PetriNetUnfolder]: 0/15 cut-off events. [2022-12-05 21:07:09,933 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-12-05 21:07:09,933 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 21:07:09,934 INFO L213 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-05 21:07:09,934 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-05 21:07:09,938 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 21:07:09,938 INFO L85 PathProgramCache]: Analyzing trace with hash -330264479, now seen corresponding path program 1 times [2022-12-05 21:07:09,946 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 21:07:09,946 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1288169175] [2022-12-05 21:07:09,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 21:07:09,947 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 21:07:10,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 21:07:11,725 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-05 21:07:11,725 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 21:07:11,726 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1288169175] [2022-12-05 21:07:11,726 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1288169175] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-05 21:07:11,726 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-05 21:07:11,727 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-05 21:07:11,728 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1758468865] [2022-12-05 21:07:11,728 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-05 21:07:11,736 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-05 21:07:11,736 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 21:07:11,757 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-05 21:07:11,757 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-05 21:07:11,758 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 0 out of 16 [2022-12-05 21:07:11,759 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 26 places, 16 transitions, 50 flow. Second operand has 5 states, 4 states have (on average 4.0) internal successors, (16), 5 states have internal predecessors, (16), 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) [2022-12-05 21:07:11,760 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 21:07:11,760 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 0 of 16 [2022-12-05 21:07:11,761 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 21:07:12,070 INFO L130 PetriNetUnfolder]: 38/100 cut-off events. [2022-12-05 21:07:12,070 INFO L131 PetriNetUnfolder]: For 25/25 co-relation queries the response was YES. [2022-12-05 21:07:12,072 INFO L83 FinitePrefix]: Finished finitePrefix Result has 233 conditions, 100 events. 38/100 cut-off events. For 25/25 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 274 event pairs, 17 based on Foata normal form. 1/101 useless extension candidates. Maximal degree in co-relation 130. Up to 45 conditions per place. [2022-12-05 21:07:12,073 INFO L137 encePairwiseOnDemand]: 12/16 looper letters, 28 selfloop transitions, 2 changer transitions 7/37 dead transitions. [2022-12-05 21:07:12,074 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 30 places, 37 transitions, 190 flow [2022-12-05 21:07:12,075 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-05 21:07:12,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-12-05 21:07:12,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 38 transitions. [2022-12-05 21:07:12,085 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.475 [2022-12-05 21:07:12,086 INFO L175 Difference]: Start difference. First operand has 26 places, 16 transitions, 50 flow. Second operand 5 states and 38 transitions. [2022-12-05 21:07:12,087 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 30 places, 37 transitions, 190 flow [2022-12-05 21:07:12,089 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 24 places, 37 transitions, 162 flow, removed 0 selfloop flow, removed 6 redundant places. [2022-12-05 21:07:12,091 INFO L231 Difference]: Finished difference. Result has 27 places, 17 transitions, 53 flow [2022-12-05 21:07:12,092 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=16, PETRI_DIFFERENCE_MINUEND_FLOW=38, PETRI_DIFFERENCE_MINUEND_PLACES=20, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=16, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=53, PETRI_PLACES=27, PETRI_TRANSITIONS=17} [2022-12-05 21:07:12,096 INFO L294 CegarLoopForPetriNet]: 26 programPoint places, 1 predicate places. [2022-12-05 21:07:12,097 INFO L495 AbstractCegarLoop]: Abstraction has has 27 places, 17 transitions, 53 flow [2022-12-05 21:07:12,097 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 4.0) internal successors, (16), 5 states have internal predecessors, (16), 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) [2022-12-05 21:07:12,097 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 21:07:12,097 INFO L213 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-05 21:07:12,098 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-05 21:07:12,098 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-05 21:07:12,106 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 21:07:12,106 INFO L85 PathProgramCache]: Analyzing trace with hash -2530013, now seen corresponding path program 2 times [2022-12-05 21:07:12,106 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 21:07:12,107 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [593664828] [2022-12-05 21:07:12,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 21:07:12,107 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 21:07:12,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 21:07:13,250 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-05 21:07:13,251 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 21:07:13,251 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [593664828] [2022-12-05 21:07:13,253 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [593664828] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-05 21:07:13,257 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-05 21:07:13,257 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-05 21:07:13,258 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [331771379] [2022-12-05 21:07:13,258 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-05 21:07:13,259 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-05 21:07:13,259 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 21:07:13,260 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-05 21:07:13,260 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-05 21:07:13,260 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 0 out of 16 [2022-12-05 21:07:13,260 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 27 places, 17 transitions, 53 flow. Second operand has 5 states, 4 states have (on average 4.0) internal successors, (16), 5 states have internal predecessors, (16), 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) [2022-12-05 21:07:13,261 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 21:07:13,261 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 0 of 16 [2022-12-05 21:07:13,261 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 21:07:13,541 INFO L130 PetriNetUnfolder]: 38/116 cut-off events. [2022-12-05 21:07:13,541 INFO L131 PetriNetUnfolder]: For 82/82 co-relation queries the response was YES. [2022-12-05 21:07:13,542 INFO L83 FinitePrefix]: Finished finitePrefix Result has 303 conditions, 116 events. 38/116 cut-off events. For 82/82 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 408 event pairs, 13 based on Foata normal form. 1/117 useless extension candidates. Maximal degree in co-relation 288. Up to 58 conditions per place. [2022-12-05 21:07:13,543 INFO L137 encePairwiseOnDemand]: 12/16 looper letters, 28 selfloop transitions, 3 changer transitions 9/40 dead transitions. [2022-12-05 21:07:13,543 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 30 places, 40 transitions, 198 flow [2022-12-05 21:07:13,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-05 21:07:13,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-12-05 21:07:13,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 40 transitions. [2022-12-05 21:07:13,546 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.5 [2022-12-05 21:07:13,547 INFO L175 Difference]: Start difference. First operand has 27 places, 17 transitions, 53 flow. Second operand 5 states and 40 transitions. [2022-12-05 21:07:13,547 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 30 places, 40 transitions, 198 flow [2022-12-05 21:07:13,548 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 28 places, 40 transitions, 191 flow, removed 2 selfloop flow, removed 2 redundant places. [2022-12-05 21:07:13,548 INFO L231 Difference]: Finished difference. Result has 31 places, 18 transitions, 70 flow [2022-12-05 21:07:13,548 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=16, PETRI_DIFFERENCE_MINUEND_FLOW=50, PETRI_DIFFERENCE_MINUEND_PLACES=24, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=17, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=70, PETRI_PLACES=31, PETRI_TRANSITIONS=18} [2022-12-05 21:07:13,549 INFO L294 CegarLoopForPetriNet]: 26 programPoint places, 5 predicate places. [2022-12-05 21:07:13,549 INFO L495 AbstractCegarLoop]: Abstraction has has 31 places, 18 transitions, 70 flow [2022-12-05 21:07:13,549 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 4.0) internal successors, (16), 5 states have internal predecessors, (16), 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) [2022-12-05 21:07:13,549 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 21:07:13,549 INFO L213 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-05 21:07:13,549 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-05 21:07:13,550 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-05 21:07:13,550 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 21:07:13,550 INFO L85 PathProgramCache]: Analyzing trace with hash -1918533477, now seen corresponding path program 3 times [2022-12-05 21:07:13,550 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 21:07:13,550 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [483568824] [2022-12-05 21:07:13,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 21:07:13,551 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 21:07:13,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 21:07:14,515 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-05 21:07:14,516 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 21:07:14,519 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [483568824] [2022-12-05 21:07:14,519 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [483568824] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-05 21:07:14,519 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-05 21:07:14,519 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-05 21:07:14,519 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2042396470] [2022-12-05 21:07:14,519 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-05 21:07:14,520 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-05 21:07:14,520 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 21:07:14,520 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-05 21:07:14,520 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-05 21:07:14,521 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 0 out of 16 [2022-12-05 21:07:14,521 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 18 transitions, 70 flow. Second operand has 5 states, 4 states have (on average 4.0) internal successors, (16), 5 states have internal predecessors, (16), 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) [2022-12-05 21:07:14,521 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 21:07:14,521 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 0 of 16 [2022-12-05 21:07:14,521 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 21:07:14,828 INFO L130 PetriNetUnfolder]: 33/103 cut-off events. [2022-12-05 21:07:14,828 INFO L131 PetriNetUnfolder]: For 169/169 co-relation queries the response was YES. [2022-12-05 21:07:14,829 INFO L83 FinitePrefix]: Finished finitePrefix Result has 326 conditions, 103 events. 33/103 cut-off events. For 169/169 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 331 event pairs, 10 based on Foata normal form. 1/104 useless extension candidates. Maximal degree in co-relation 312. Up to 36 conditions per place. [2022-12-05 21:07:14,829 INFO L137 encePairwiseOnDemand]: 12/16 looper letters, 28 selfloop transitions, 3 changer transitions 11/42 dead transitions. [2022-12-05 21:07:14,829 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 42 transitions, 233 flow [2022-12-05 21:07:14,830 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-05 21:07:14,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-12-05 21:07:14,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 40 transitions. [2022-12-05 21:07:14,831 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.5 [2022-12-05 21:07:14,831 INFO L175 Difference]: Start difference. First operand has 31 places, 18 transitions, 70 flow. Second operand 5 states and 40 transitions. [2022-12-05 21:07:14,831 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 42 transitions, 233 flow [2022-12-05 21:07:14,832 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 42 transitions, 223 flow, removed 3 selfloop flow, removed 2 redundant places. [2022-12-05 21:07:14,833 INFO L231 Difference]: Finished difference. Result has 35 places, 18 transitions, 80 flow [2022-12-05 21:07:14,833 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=16, PETRI_DIFFERENCE_MINUEND_FLOW=64, PETRI_DIFFERENCE_MINUEND_PLACES=28, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=18, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=80, PETRI_PLACES=35, PETRI_TRANSITIONS=18} [2022-12-05 21:07:14,834 INFO L294 CegarLoopForPetriNet]: 26 programPoint places, 9 predicate places. [2022-12-05 21:07:14,834 INFO L495 AbstractCegarLoop]: Abstraction has has 35 places, 18 transitions, 80 flow [2022-12-05 21:07:14,834 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 4.0) internal successors, (16), 5 states have internal predecessors, (16), 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) [2022-12-05 21:07:14,834 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 21:07:14,835 INFO L213 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-05 21:07:14,835 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-12-05 21:07:14,835 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-05 21:07:14,835 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 21:07:14,835 INFO L85 PathProgramCache]: Analyzing trace with hash 1021889155, now seen corresponding path program 4 times [2022-12-05 21:07:14,836 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 21:07:14,836 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1566145856] [2022-12-05 21:07:14,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 21:07:14,836 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 21:07:14,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 21:07:15,797 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-05 21:07:15,797 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 21:07:15,797 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1566145856] [2022-12-05 21:07:15,799 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1566145856] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-05 21:07:15,799 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-05 21:07:15,799 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-05 21:07:15,799 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [479543897] [2022-12-05 21:07:15,799 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-05 21:07:15,800 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-05 21:07:15,800 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 21:07:15,801 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-05 21:07:15,801 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-05 21:07:15,801 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 0 out of 16 [2022-12-05 21:07:15,801 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 18 transitions, 80 flow. Second operand has 5 states, 4 states have (on average 4.0) internal successors, (16), 5 states have internal predecessors, (16), 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) [2022-12-05 21:07:15,802 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 21:07:15,802 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 0 of 16 [2022-12-05 21:07:15,802 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 21:07:16,034 INFO L130 PetriNetUnfolder]: 24/74 cut-off events. [2022-12-05 21:07:16,034 INFO L131 PetriNetUnfolder]: For 211/211 co-relation queries the response was YES. [2022-12-05 21:07:16,034 INFO L83 FinitePrefix]: Finished finitePrefix Result has 270 conditions, 74 events. 24/74 cut-off events. For 211/211 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 176 event pairs, 9 based on Foata normal form. 1/75 useless extension candidates. Maximal degree in co-relation 257. Up to 35 conditions per place. [2022-12-05 21:07:16,035 INFO L137 encePairwiseOnDemand]: 12/16 looper letters, 16 selfloop transitions, 1 changer transitions 17/34 dead transitions. [2022-12-05 21:07:16,035 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 34 transitions, 201 flow [2022-12-05 21:07:16,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-05 21:07:16,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-12-05 21:07:16,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 34 transitions. [2022-12-05 21:07:16,038 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.425 [2022-12-05 21:07:16,038 INFO L175 Difference]: Start difference. First operand has 35 places, 18 transitions, 80 flow. Second operand 5 states and 34 transitions. [2022-12-05 21:07:16,038 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 34 transitions, 201 flow [2022-12-05 21:07:16,040 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 34 transitions, 186 flow, removed 5 selfloop flow, removed 4 redundant places. [2022-12-05 21:07:16,040 INFO L231 Difference]: Finished difference. Result has 36 places, 16 transitions, 61 flow [2022-12-05 21:07:16,041 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=16, PETRI_DIFFERENCE_MINUEND_FLOW=70, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=18, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=61, PETRI_PLACES=36, PETRI_TRANSITIONS=16} [2022-12-05 21:07:16,041 INFO L294 CegarLoopForPetriNet]: 26 programPoint places, 10 predicate places. [2022-12-05 21:07:16,041 INFO L495 AbstractCegarLoop]: Abstraction has has 36 places, 16 transitions, 61 flow [2022-12-05 21:07:16,041 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 4.0) internal successors, (16), 5 states have internal predecessors, (16), 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) [2022-12-05 21:07:16,041 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 21:07:16,042 INFO L213 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-05 21:07:16,042 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-12-05 21:07:16,042 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-05 21:07:16,042 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 21:07:16,042 INFO L85 PathProgramCache]: Analyzing trace with hash -642463495, now seen corresponding path program 5 times [2022-12-05 21:07:16,042 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 21:07:16,043 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1084807697] [2022-12-05 21:07:16,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 21:07:16,043 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 21:07:16,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 21:07:17,177 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-05 21:07:17,177 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 21:07:17,178 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1084807697] [2022-12-05 21:07:17,178 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1084807697] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-05 21:07:17,178 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-05 21:07:17,178 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-05 21:07:17,178 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1103875824] [2022-12-05 21:07:17,178 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-05 21:07:17,178 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-05 21:07:17,179 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 21:07:17,179 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-05 21:07:17,179 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-05 21:07:17,179 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 0 out of 16 [2022-12-05 21:07:17,179 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 16 transitions, 61 flow. Second operand has 5 states, 4 states have (on average 4.0) internal successors, (16), 5 states have internal predecessors, (16), 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) [2022-12-05 21:07:17,179 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 21:07:17,180 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 0 of 16 [2022-12-05 21:07:17,180 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 21:07:17,462 INFO L130 PetriNetUnfolder]: 8/40 cut-off events. [2022-12-05 21:07:17,462 INFO L131 PetriNetUnfolder]: For 61/61 co-relation queries the response was YES. [2022-12-05 21:07:17,463 INFO L83 FinitePrefix]: Finished finitePrefix Result has 142 conditions, 40 events. 8/40 cut-off events. For 61/61 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 66 event pairs, 1 based on Foata normal form. 1/41 useless extension candidates. Maximal degree in co-relation 130. Up to 19 conditions per place. [2022-12-05 21:07:17,463 INFO L137 encePairwiseOnDemand]: 12/16 looper letters, 16 selfloop transitions, 1 changer transitions 11/28 dead transitions. [2022-12-05 21:07:17,463 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 28 transitions, 162 flow [2022-12-05 21:07:17,463 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-05 21:07:17,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-12-05 21:07:17,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 29 transitions. [2022-12-05 21:07:17,464 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.3625 [2022-12-05 21:07:17,465 INFO L175 Difference]: Start difference. First operand has 36 places, 16 transitions, 61 flow. Second operand 5 states and 29 transitions. [2022-12-05 21:07:17,465 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 28 transitions, 162 flow [2022-12-05 21:07:17,465 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 27 places, 28 transitions, 127 flow, removed 6 selfloop flow, removed 10 redundant places. [2022-12-05 21:07:17,466 INFO L231 Difference]: Finished difference. Result has 30 places, 16 transitions, 49 flow [2022-12-05 21:07:17,466 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=16, PETRI_DIFFERENCE_MINUEND_FLOW=40, PETRI_DIFFERENCE_MINUEND_PLACES=23, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=16, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=49, PETRI_PLACES=30, PETRI_TRANSITIONS=16} [2022-12-05 21:07:17,467 INFO L294 CegarLoopForPetriNet]: 26 programPoint places, 4 predicate places. [2022-12-05 21:07:17,467 INFO L495 AbstractCegarLoop]: Abstraction has has 30 places, 16 transitions, 49 flow [2022-12-05 21:07:17,467 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 4.0) internal successors, (16), 5 states have internal predecessors, (16), 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) [2022-12-05 21:07:17,467 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 21:07:17,467 INFO L213 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-05 21:07:17,467 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-12-05 21:07:17,468 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-05 21:07:17,468 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 21:07:17,468 INFO L85 PathProgramCache]: Analyzing trace with hash -1626700993, now seen corresponding path program 6 times [2022-12-05 21:07:17,468 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 21:07:17,468 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1427746784] [2022-12-05 21:07:17,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 21:07:17,469 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 21:07:17,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 21:07:18,195 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-05 21:07:18,195 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 21:07:18,195 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1427746784] [2022-12-05 21:07:18,195 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1427746784] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-05 21:07:18,195 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-05 21:07:18,196 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-05 21:07:18,196 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [431793911] [2022-12-05 21:07:18,196 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-05 21:07:18,196 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-05 21:07:18,196 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 21:07:18,197 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-05 21:07:18,197 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-05 21:07:18,197 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 0 out of 16 [2022-12-05 21:07:18,197 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 16 transitions, 49 flow. Second operand has 5 states, 4 states have (on average 4.0) internal successors, (16), 5 states have internal predecessors, (16), 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) [2022-12-05 21:07:18,197 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 21:07:18,197 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 0 of 16 [2022-12-05 21:07:18,198 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 21:07:18,342 INFO L130 PetriNetUnfolder]: 6/28 cut-off events. [2022-12-05 21:07:18,343 INFO L131 PetriNetUnfolder]: For 15/15 co-relation queries the response was YES. [2022-12-05 21:07:18,343 INFO L83 FinitePrefix]: Finished finitePrefix Result has 83 conditions, 28 events. 6/28 cut-off events. For 15/15 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 25 event pairs, 3 based on Foata normal form. 1/29 useless extension candidates. Maximal degree in co-relation 77. Up to 15 conditions per place. [2022-12-05 21:07:18,343 INFO L137 encePairwiseOnDemand]: 12/16 looper letters, 0 selfloop transitions, 0 changer transitions 19/19 dead transitions. [2022-12-05 21:07:18,343 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 31 places, 19 transitions, 94 flow [2022-12-05 21:07:18,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-05 21:07:18,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-12-05 21:07:18,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 20 transitions. [2022-12-05 21:07:18,344 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.25 [2022-12-05 21:07:18,344 INFO L175 Difference]: Start difference. First operand has 30 places, 16 transitions, 49 flow. Second operand 5 states and 20 transitions. [2022-12-05 21:07:18,344 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 31 places, 19 transitions, 94 flow [2022-12-05 21:07:18,345 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 29 places, 19 transitions, 90 flow, removed 1 selfloop flow, removed 2 redundant places. [2022-12-05 21:07:18,345 INFO L231 Difference]: Finished difference. Result has 29 places, 0 transitions, 0 flow [2022-12-05 21:07:18,345 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=16, PETRI_DIFFERENCE_MINUEND_FLOW=42, PETRI_DIFFERENCE_MINUEND_PLACES=25, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=15, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=0, PETRI_PLACES=29, PETRI_TRANSITIONS=0} [2022-12-05 21:07:18,346 INFO L294 CegarLoopForPetriNet]: 26 programPoint places, 3 predicate places. [2022-12-05 21:07:18,346 INFO L495 AbstractCegarLoop]: Abstraction has has 29 places, 0 transitions, 0 flow [2022-12-05 21:07:18,346 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 4.0) internal successors, (16), 5 states have internal predecessors, (16), 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) [2022-12-05 21:07:18,350 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 4 remaining) [2022-12-05 21:07:18,351 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 4 remaining) [2022-12-05 21:07:18,351 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2022-12-05 21:07:18,351 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2022-12-05 21:07:18,351 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-12-05 21:07:18,351 INFO L458 BasicCegarLoop]: Path program histogram: [6] [2022-12-05 21:07:18,354 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-12-05 21:07:18,354 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-12-05 21:07:18,356 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 05.12 09:07:18 BasicIcfg [2022-12-05 21:07:18,356 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-12-05 21:07:18,357 INFO L158 Benchmark]: Toolchain (without parser) took 15522.67ms. Allocated memory was 178.3MB in the beginning and 475.0MB in the end (delta: 296.7MB). Free memory was 155.1MB in the beginning and 352.0MB in the end (delta: -197.0MB). Peak memory consumption was 101.2MB. Max. memory is 8.0GB. [2022-12-05 21:07:18,357 INFO L158 Benchmark]: CDTParser took 0.12ms. Allocated memory is still 178.3MB. Free memory is still 155.1MB. There was no memory consumed. Max. memory is 8.0GB. [2022-12-05 21:07:18,357 INFO L158 Benchmark]: CACSL2BoogieTranslator took 296.92ms. Allocated memory is still 178.3MB. Free memory was 155.1MB in the beginning and 142.9MB in the end (delta: 12.2MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. [2022-12-05 21:07:18,358 INFO L158 Benchmark]: Boogie Procedure Inliner took 60.43ms. Allocated memory is still 178.3MB. Free memory was 142.9MB in the beginning and 140.8MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-12-05 21:07:18,358 INFO L158 Benchmark]: Boogie Preprocessor took 33.54ms. Allocated memory is still 178.3MB. Free memory was 140.8MB in the beginning and 139.2MB in the end (delta: 1.6MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-12-05 21:07:18,358 INFO L158 Benchmark]: RCFGBuilder took 941.91ms. Allocated memory was 178.3MB in the beginning and 213.9MB in the end (delta: 35.7MB). Free memory was 138.7MB in the beginning and 187.5MB in the end (delta: -48.8MB). Peak memory consumption was 62.3MB. Max. memory is 8.0GB. [2022-12-05 21:07:18,359 INFO L158 Benchmark]: TraceAbstraction took 14182.11ms. Allocated memory was 213.9MB in the beginning and 475.0MB in the end (delta: 261.1MB). Free memory was 186.5MB in the beginning and 352.0MB in the end (delta: -165.6MB). Peak memory consumption was 95.5MB. Max. memory is 8.0GB. [2022-12-05 21:07:18,360 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12ms. Allocated memory is still 178.3MB. Free memory is still 155.1MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 296.92ms. Allocated memory is still 178.3MB. Free memory was 155.1MB in the beginning and 142.9MB in the end (delta: 12.2MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 60.43ms. Allocated memory is still 178.3MB. Free memory was 142.9MB in the beginning and 140.8MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 33.54ms. Allocated memory is still 178.3MB. Free memory was 140.8MB in the beginning and 139.2MB in the end (delta: 1.6MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 941.91ms. Allocated memory was 178.3MB in the beginning and 213.9MB in the end (delta: 35.7MB). Free memory was 138.7MB in the beginning and 187.5MB in the end (delta: -48.8MB). Peak memory consumption was 62.3MB. Max. memory is 8.0GB. * TraceAbstraction took 14182.11ms. Allocated memory was 213.9MB in the beginning and 475.0MB in the end (delta: 261.1MB). Free memory was 186.5MB in the beginning and 352.0MB in the end (delta: -165.6MB). Peak memory consumption was 95.5MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 5.4s, 101 PlacesBefore, 26 PlacesAfterwards, 92 TransitionsBefore, 16 TransitionsAfterwards, 270 CoEnabledTransitionPairs, 2 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 57 TrivialYvCompositions, 18 ConcurrentYvCompositions, 1 ChoiceCompositions, 76 TotalNumberOfCompositions, Independence Relation Statistics: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 117, independent: 117, independent conditional: 117, independent unconditional: 0, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: DisjunctiveConditionalIndependenceRelation.Independence Queries: [ total: 117, independent: 117, independent conditional: 0, independent unconditional: 117, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , DisjunctiveConditionalIndependenceRelation.Statistics on underlying relation: SemanticConditionEliminator.Independence Queries: [ total: 117, independent: 117, independent conditional: 0, independent unconditional: 117, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticConditionEliminator.Statistics on underlying relation: CachedIndependenceRelation.Independence Queries: [ total: 117, independent: 117, independent conditional: 0, independent unconditional: 117, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 117, independent: 117, independent conditional: 0, independent unconditional: 117, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 117, independent: 117, independent conditional: 0, independent unconditional: 117, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 0, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 0, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 117, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 117, unknown conditional: 0, unknown unconditional: 117] , Statistics on independence cache: Total cache size (in pairs): 171, Positive cache size: 171, Positive conditional cache size: 0, Positive unconditional cache size: 171, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0, Eliminated conditions: 0, Maximal queried relation: -1 - PositiveResult [Line: 93]: 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 7 procedures, 120 locations, 4 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: 14.0s, OverallIterations: 6, TraceHistogramMax: 1, PathProgramHistogramMax: 6, EmptinessCheckTime: 0.0s, AutomataDifference: 1.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 5.6s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 106 SdHoareTripleChecker+Valid, 0.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 106 mSDsluCounter, 0 SdHoareTripleChecker+Invalid, 0.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 0 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 521 IncrementalHoareTripleChecker+Invalid, 521 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 0 mSolverCounterUnsat, 0 mSDtfsCounter, 521 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 36 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=80occurred in iteration=3, InterpolantAutomatonStates: 30, 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, 0.3s SatisfiabilityAnalysisTime, 6.3s InterpolantComputationTime, 96 NumberOfCodeBlocks, 96 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 90 ConstructedInterpolants, 0 QuantifiedInterpolants, 3630 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! [2022-12-05 21:07:18,390 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...