/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-NoLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/pthread/triangular-longest-1.i -------------------------------------------------------------------------------- This is Ultimate 0.2.2-wip.dk.repeated-lipton-a802222-m [2022-12-11 18:54:58,872 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-11 18:54:58,873 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-11 18:54:58,901 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-11 18:54:58,901 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-11 18:54:58,903 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-11 18:54:58,906 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-11 18:54:58,909 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-11 18:54:58,912 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-11 18:54:58,915 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-11 18:54:58,916 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-11 18:54:58,917 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-11 18:54:58,917 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-11 18:54:58,919 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-11 18:54:58,920 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-11 18:54:58,922 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-11 18:54:58,922 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-11 18:54:58,923 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-11 18:54:58,925 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-11 18:54:58,928 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-11 18:54:58,930 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-11 18:54:58,931 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-11 18:54:58,931 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-11 18:54:58,932 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-11 18:54:58,953 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-11 18:54:58,953 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-11 18:54:58,954 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-11 18:54:58,955 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-11 18:54:58,955 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-11 18:54:58,955 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-11 18:54:58,956 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-11 18:54:58,957 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-11 18:54:58,958 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-11 18:54:58,958 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-11 18:54:58,959 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-11 18:54:58,959 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-11 18:54:58,959 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-11 18:54:58,959 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-11 18:54:58,959 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-11 18:54:58,960 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-11 18:54:58,960 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-11 18:54:58,969 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-NoLbe.epf [2022-12-11 18:54:58,993 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-11 18:54:58,994 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-11 18:54:58,995 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-11 18:54:58,995 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-11 18:54:58,995 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-11 18:54:58,996 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-11 18:54:58,996 INFO L138 SettingsManager]: * Use SBE=true [2022-12-11 18:54:58,996 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-11 18:54:58,996 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-11 18:54:58,996 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-11 18:54:58,996 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-11 18:54:58,997 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-11 18:54:58,997 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-11 18:54:58,997 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-11 18:54:58,997 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-11 18:54:58,997 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-11 18:54:58,997 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-11 18:54:58,997 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-11 18:54:58,997 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-11 18:54:58,997 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-11 18:54:58,997 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-11 18:54:58,997 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-12-11 18:54:58,998 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-11 18:54:58,998 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-11 18:54:58,998 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-11 18:54:58,998 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-11 18:54:58,998 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-11 18:54:58,998 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-12-11 18:54:58,998 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-11 18:54:58,998 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-11 18:54:58,998 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-11 18:54:58,998 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-12-11 18:54:59,238 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-11 18:54:59,251 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-11 18:54:59,253 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-11 18:54:59,253 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-11 18:54:59,254 INFO L275 PluginConnector]: CDTParser initialized [2022-12-11 18:54:59,255 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread/triangular-longest-1.i [2022-12-11 18:55:00,179 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-11 18:55:00,401 INFO L351 CDTParser]: Found 1 translation units. [2022-12-11 18:55:00,401 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread/triangular-longest-1.i [2022-12-11 18:55:00,417 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/19aad40f9/edfdb5c3f2344ceb92ba949ba5ba0696/FLAG2effa592f [2022-12-11 18:55:00,738 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/19aad40f9/edfdb5c3f2344ceb92ba949ba5ba0696 [2022-12-11 18:55:00,739 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-11 18:55:00,741 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-12-11 18:55:00,743 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-11 18:55:00,743 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-11 18:55:00,744 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-11 18:55:00,745 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.12 06:55:00" (1/1) ... [2022-12-11 18:55:00,746 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3b61e9ad and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.12 06:55:00, skipping insertion in model container [2022-12-11 18:55:00,746 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.12 06:55:00" (1/1) ... [2022-12-11 18:55:00,750 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-11 18:55:00,788 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-11 18:55:00,973 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-11 18:55:00,974 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-11 18:55:00,978 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-11 18:55:00,979 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-11 18:55:00,989 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-11 18:55:00,990 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-11 18:55:00,990 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-11 18:55:00,990 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-11 18:55:00,991 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/triangular-longest-1.i[30962,30975] [2022-12-11 18:55:00,993 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-11 18:55:01,003 INFO L203 MainTranslator]: Completed pre-run [2022-12-11 18:55:01,045 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-11 18:55:01,046 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-11 18:55:01,046 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-11 18:55:01,047 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-11 18:55:01,049 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-11 18:55:01,050 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-11 18:55:01,050 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-11 18:55:01,050 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-11 18:55:01,051 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/triangular-longest-1.i[30962,30975] [2022-12-11 18:55:01,051 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-11 18:55:01,077 INFO L208 MainTranslator]: Completed translation [2022-12-11 18:55:01,077 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.12 06:55:01 WrapperNode [2022-12-11 18:55:01,078 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-11 18:55:01,079 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-11 18:55:01,079 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-11 18:55:01,079 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-11 18:55:01,083 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.12 06:55:01" (1/1) ... [2022-12-11 18:55:01,091 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.12 06:55:01" (1/1) ... [2022-12-11 18:55:01,105 INFO L138 Inliner]: procedures = 169, calls = 24, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 47 [2022-12-11 18:55:01,106 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-11 18:55:01,107 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-11 18:55:01,107 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-11 18:55:01,111 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-11 18:55:01,117 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.12 06:55:01" (1/1) ... [2022-12-11 18:55:01,117 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.12 06:55:01" (1/1) ... [2022-12-11 18:55:01,118 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.12 06:55:01" (1/1) ... [2022-12-11 18:55:01,119 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.12 06:55:01" (1/1) ... [2022-12-11 18:55:01,121 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.12 06:55:01" (1/1) ... [2022-12-11 18:55:01,123 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.12 06:55:01" (1/1) ... [2022-12-11 18:55:01,124 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.12 06:55:01" (1/1) ... [2022-12-11 18:55:01,125 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.12 06:55:01" (1/1) ... [2022-12-11 18:55:01,126 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-11 18:55:01,127 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-11 18:55:01,127 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-11 18:55:01,127 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-11 18:55:01,127 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.12 06:55:01" (1/1) ... [2022-12-11 18:55:01,131 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-11 18:55:01,147 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-11 18:55:01,160 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) [2022-12-11 18:55:01,183 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 [2022-12-11 18:55:01,187 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2022-12-11 18:55:01,188 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2022-12-11 18:55:01,188 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2022-12-11 18:55:01,188 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2022-12-11 18:55:01,188 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-11 18:55:01,188 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-12-11 18:55:01,188 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-11 18:55:01,188 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-11 18:55:01,189 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-11 18:55:01,189 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-11 18:55:01,189 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-12-11 18:55:01,189 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-11 18:55:01,189 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-11 18:55:01,190 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2022-12-11 18:55:01,301 INFO L236 CfgBuilder]: Building ICFG [2022-12-11 18:55:01,303 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-11 18:55:01,474 INFO L277 CfgBuilder]: Performing block encoding [2022-12-11 18:55:01,478 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-11 18:55:01,479 INFO L302 CfgBuilder]: Removed 2 assume(true) statements. [2022-12-11 18:55:01,480 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.12 06:55:01 BoogieIcfgContainer [2022-12-11 18:55:01,480 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-11 18:55:01,482 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-11 18:55:01,482 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-11 18:55:01,484 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-11 18:55:01,484 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.12 06:55:00" (1/3) ... [2022-12-11 18:55:01,485 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6e5db504 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.12 06:55:01, skipping insertion in model container [2022-12-11 18:55:01,485 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.12 06:55:01" (2/3) ... [2022-12-11 18:55:01,485 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6e5db504 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.12 06:55:01, skipping insertion in model container [2022-12-11 18:55:01,486 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.12 06:55:01" (3/3) ... [2022-12-11 18:55:01,487 INFO L112 eAbstractionObserver]: Analyzing ICFG triangular-longest-1.i [2022-12-11 18:55:01,500 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-11 18:55:01,501 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-12-11 18:55:01,501 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-12-11 18:55:01,576 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-12-11 18:55:01,620 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 68 places, 66 transitions, 142 flow [2022-12-11 18:55:01,662 INFO L130 PetriNetUnfolder]: 5/64 cut-off events. [2022-12-11 18:55:01,662 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-11 18:55:01,667 INFO L83 FinitePrefix]: Finished finitePrefix Result has 71 conditions, 64 events. 5/64 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 63 event pairs, 0 based on Foata normal form. 0/58 useless extension candidates. Maximal degree in co-relation 46. Up to 2 conditions per place. [2022-12-11 18:55:01,667 INFO L82 GeneralOperation]: Start removeDead. Operand has 68 places, 66 transitions, 142 flow [2022-12-11 18:55:01,671 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 66 places, 64 transitions, 134 flow [2022-12-11 18:55:01,683 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-11 18:55:01,690 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;@38f00da8, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, Conditionality=CONDITIONAL_DISJUNCTIVE, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-11 18:55:01,690 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2022-12-11 18:55:01,716 INFO L130 PetriNetUnfolder]: 4/54 cut-off events. [2022-12-11 18:55:01,717 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-11 18:55:01,717 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-11 18:55:01,717 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-11 18:55:01,718 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-11 18:55:01,721 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-11 18:55:01,721 INFO L85 PathProgramCache]: Analyzing trace with hash -869864902, now seen corresponding path program 1 times [2022-12-11 18:55:01,728 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-11 18:55:01,729 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1668872376] [2022-12-11 18:55:01,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-11 18:55:01,729 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-11 18:55:01,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-11 18:55:02,186 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-11 18:55:02,187 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-11 18:55:02,187 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1668872376] [2022-12-11 18:55:02,188 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1668872376] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-11 18:55:02,188 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-11 18:55:02,188 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-12-11 18:55:02,189 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1591023266] [2022-12-11 18:55:02,189 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-11 18:55:02,195 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-11 18:55:02,195 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-11 18:55:02,226 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-11 18:55:02,227 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-12-11 18:55:02,233 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 51 out of 66 [2022-12-11 18:55:02,235 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 64 transitions, 134 flow. Second operand has 6 states, 6 states have (on average 52.333333333333336) internal successors, (314), 6 states have internal predecessors, (314), 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) [2022-12-11 18:55:02,235 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-11 18:55:02,235 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 51 of 66 [2022-12-11 18:55:02,236 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-11 18:55:02,369 INFO L130 PetriNetUnfolder]: 46/204 cut-off events. [2022-12-11 18:55:02,369 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-12-11 18:55:02,370 INFO L83 FinitePrefix]: Finished finitePrefix Result has 289 conditions, 204 events. 46/204 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 790 event pairs, 3 based on Foata normal form. 49/233 useless extension candidates. Maximal degree in co-relation 259. Up to 32 conditions per place. [2022-12-11 18:55:02,371 INFO L137 encePairwiseOnDemand]: 55/66 looper letters, 14 selfloop transitions, 9 changer transitions 23/88 dead transitions. [2022-12-11 18:55:02,371 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 88 transitions, 263 flow [2022-12-11 18:55:02,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-12-11 18:55:02,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-12-11 18:55:02,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 573 transitions. [2022-12-11 18:55:02,389 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.8681818181818182 [2022-12-11 18:55:02,390 INFO L175 Difference]: Start difference. First operand has 66 places, 64 transitions, 134 flow. Second operand 10 states and 573 transitions. [2022-12-11 18:55:02,390 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 88 transitions, 263 flow [2022-12-11 18:55:02,392 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 88 transitions, 260 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-12-11 18:55:02,395 INFO L231 Difference]: Finished difference. Result has 79 places, 61 transitions, 175 flow [2022-12-11 18:55:02,396 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=66, PETRI_DIFFERENCE_MINUEND_FLOW=124, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=175, PETRI_PLACES=79, PETRI_TRANSITIONS=61} [2022-12-11 18:55:02,399 INFO L295 CegarLoopForPetriNet]: 66 programPoint places, 13 predicate places. [2022-12-11 18:55:02,399 INFO L495 AbstractCegarLoop]: Abstraction has has 79 places, 61 transitions, 175 flow [2022-12-11 18:55:02,399 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 52.333333333333336) internal successors, (314), 6 states have internal predecessors, (314), 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) [2022-12-11 18:55:02,399 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-11 18:55:02,399 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-11 18:55:02,400 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-11 18:55:02,400 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-11 18:55:02,401 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-11 18:55:02,401 INFO L85 PathProgramCache]: Analyzing trace with hash -1673234708, now seen corresponding path program 1 times [2022-12-11 18:55:02,401 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-11 18:55:02,401 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [172525731] [2022-12-11 18:55:02,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-11 18:55:02,401 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-11 18:55:02,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-11 18:55:02,600 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-11 18:55:02,600 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-11 18:55:02,601 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [172525731] [2022-12-11 18:55:02,601 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [172525731] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-11 18:55:02,601 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-11 18:55:02,601 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-12-11 18:55:02,601 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [813945784] [2022-12-11 18:55:02,601 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-11 18:55:02,602 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-11 18:55:02,603 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-11 18:55:02,605 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-11 18:55:02,610 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-12-11 18:55:02,611 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 51 out of 66 [2022-12-11 18:55:02,611 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 61 transitions, 175 flow. Second operand has 6 states, 6 states have (on average 52.5) internal successors, (315), 6 states have internal predecessors, (315), 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) [2022-12-11 18:55:02,612 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-11 18:55:02,612 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 51 of 66 [2022-12-11 18:55:02,612 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-11 18:55:02,696 INFO L130 PetriNetUnfolder]: 27/134 cut-off events. [2022-12-11 18:55:02,696 INFO L131 PetriNetUnfolder]: For 64/66 co-relation queries the response was YES. [2022-12-11 18:55:02,699 INFO L83 FinitePrefix]: Finished finitePrefix Result has 256 conditions, 134 events. 27/134 cut-off events. For 64/66 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 370 event pairs, 0 based on Foata normal form. 2/123 useless extension candidates. Maximal degree in co-relation 220. Up to 29 conditions per place. [2022-12-11 18:55:02,701 INFO L137 encePairwiseOnDemand]: 60/66 looper letters, 16 selfloop transitions, 9 changer transitions 5/72 dead transitions. [2022-12-11 18:55:02,701 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 72 transitions, 281 flow [2022-12-11 18:55:02,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-11 18:55:02,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-12-11 18:55:02,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 383 transitions. [2022-12-11 18:55:02,703 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.829004329004329 [2022-12-11 18:55:02,703 INFO L175 Difference]: Start difference. First operand has 79 places, 61 transitions, 175 flow. Second operand 7 states and 383 transitions. [2022-12-11 18:55:02,703 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 72 transitions, 281 flow [2022-12-11 18:55:02,705 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 72 transitions, 273 flow, removed 4 selfloop flow, removed 4 redundant places. [2022-12-11 18:55:02,706 INFO L231 Difference]: Finished difference. Result has 73 places, 64 transitions, 214 flow [2022-12-11 18:55:02,707 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=66, PETRI_DIFFERENCE_MINUEND_FLOW=167, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=214, PETRI_PLACES=73, PETRI_TRANSITIONS=64} [2022-12-11 18:55:02,707 INFO L295 CegarLoopForPetriNet]: 66 programPoint places, 7 predicate places. [2022-12-11 18:55:02,707 INFO L495 AbstractCegarLoop]: Abstraction has has 73 places, 64 transitions, 214 flow [2022-12-11 18:55:02,707 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 52.5) internal successors, (315), 6 states have internal predecessors, (315), 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) [2022-12-11 18:55:02,708 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-11 18:55:02,708 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-11 18:55:02,708 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-11 18:55:02,708 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-11 18:55:02,708 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-11 18:55:02,708 INFO L85 PathProgramCache]: Analyzing trace with hash 1128844342, now seen corresponding path program 1 times [2022-12-11 18:55:02,708 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-11 18:55:02,709 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1445460187] [2022-12-11 18:55:02,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-11 18:55:02,709 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-11 18:55:02,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-11 18:55:02,854 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-11 18:55:02,855 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-11 18:55:02,855 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1445460187] [2022-12-11 18:55:02,855 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1445460187] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-11 18:55:02,855 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-11 18:55:02,855 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-12-11 18:55:02,856 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1093859401] [2022-12-11 18:55:02,856 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-11 18:55:02,857 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-11 18:55:02,857 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-11 18:55:02,857 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-11 18:55:02,857 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-12-11 18:55:02,858 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 51 out of 66 [2022-12-11 18:55:02,858 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 64 transitions, 214 flow. Second operand has 6 states, 6 states have (on average 52.5) internal successors, (315), 6 states have internal predecessors, (315), 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) [2022-12-11 18:55:02,858 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-11 18:55:02,858 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 51 of 66 [2022-12-11 18:55:02,858 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-11 18:55:02,945 INFO L130 PetriNetUnfolder]: 37/200 cut-off events. [2022-12-11 18:55:02,945 INFO L131 PetriNetUnfolder]: For 127/138 co-relation queries the response was YES. [2022-12-11 18:55:02,947 INFO L83 FinitePrefix]: Finished finitePrefix Result has 385 conditions, 200 events. 37/200 cut-off events. For 127/138 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 702 event pairs, 0 based on Foata normal form. 12/193 useless extension candidates. Maximal degree in co-relation 345. Up to 35 conditions per place. [2022-12-11 18:55:02,948 INFO L137 encePairwiseOnDemand]: 60/66 looper letters, 23 selfloop transitions, 11 changer transitions 8/84 dead transitions. [2022-12-11 18:55:02,949 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 84 transitions, 404 flow [2022-12-11 18:55:02,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-12-11 18:55:02,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-12-11 18:55:02,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 494 transitions. [2022-12-11 18:55:02,950 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.8316498316498316 [2022-12-11 18:55:02,950 INFO L175 Difference]: Start difference. First operand has 73 places, 64 transitions, 214 flow. Second operand 9 states and 494 transitions. [2022-12-11 18:55:02,950 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 84 transitions, 404 flow [2022-12-11 18:55:02,954 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 84 transitions, 381 flow, removed 9 selfloop flow, removed 3 redundant places. [2022-12-11 18:55:02,956 INFO L231 Difference]: Finished difference. Result has 83 places, 69 transitions, 283 flow [2022-12-11 18:55:02,956 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=66, PETRI_DIFFERENCE_MINUEND_FLOW=203, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=283, PETRI_PLACES=83, PETRI_TRANSITIONS=69} [2022-12-11 18:55:02,957 INFO L295 CegarLoopForPetriNet]: 66 programPoint places, 17 predicate places. [2022-12-11 18:55:02,957 INFO L495 AbstractCegarLoop]: Abstraction has has 83 places, 69 transitions, 283 flow [2022-12-11 18:55:02,958 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 52.5) internal successors, (315), 6 states have internal predecessors, (315), 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) [2022-12-11 18:55:02,958 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-11 18:55:02,958 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-11 18:55:02,958 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-12-11 18:55:02,958 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-11 18:55:02,959 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-11 18:55:02,959 INFO L85 PathProgramCache]: Analyzing trace with hash 1724335678, now seen corresponding path program 2 times [2022-12-11 18:55:02,959 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-11 18:55:02,960 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1711887811] [2022-12-11 18:55:02,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-11 18:55:02,960 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-11 18:55:02,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-11 18:55:03,105 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-11 18:55:03,105 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-11 18:55:03,105 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1711887811] [2022-12-11 18:55:03,105 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1711887811] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-11 18:55:03,105 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-11 18:55:03,105 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-12-11 18:55:03,106 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1584181027] [2022-12-11 18:55:03,106 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-11 18:55:03,106 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-11 18:55:03,106 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-11 18:55:03,106 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-11 18:55:03,106 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-12-11 18:55:03,107 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 51 out of 66 [2022-12-11 18:55:03,107 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 69 transitions, 283 flow. Second operand has 6 states, 6 states have (on average 52.5) internal successors, (315), 6 states have internal predecessors, (315), 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) [2022-12-11 18:55:03,108 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-11 18:55:03,108 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 51 of 66 [2022-12-11 18:55:03,108 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-11 18:55:03,184 INFO L130 PetriNetUnfolder]: 30/181 cut-off events. [2022-12-11 18:55:03,184 INFO L131 PetriNetUnfolder]: For 246/267 co-relation queries the response was YES. [2022-12-11 18:55:03,185 INFO L83 FinitePrefix]: Finished finitePrefix Result has 401 conditions, 181 events. 30/181 cut-off events. For 246/267 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 626 event pairs, 0 based on Foata normal form. 18/181 useless extension candidates. Maximal degree in co-relation 369. Up to 32 conditions per place. [2022-12-11 18:55:03,186 INFO L137 encePairwiseOnDemand]: 59/66 looper letters, 19 selfloop transitions, 12 changer transitions 11/84 dead transitions. [2022-12-11 18:55:03,186 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 84 transitions, 481 flow [2022-12-11 18:55:03,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-12-11 18:55:03,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-12-11 18:55:03,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 488 transitions. [2022-12-11 18:55:03,187 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.8215488215488216 [2022-12-11 18:55:03,187 INFO L175 Difference]: Start difference. First operand has 83 places, 69 transitions, 283 flow. Second operand 9 states and 488 transitions. [2022-12-11 18:55:03,187 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 84 transitions, 481 flow [2022-12-11 18:55:03,189 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 84 transitions, 461 flow, removed 6 selfloop flow, removed 3 redundant places. [2022-12-11 18:55:03,190 INFO L231 Difference]: Finished difference. Result has 90 places, 70 transitions, 326 flow [2022-12-11 18:55:03,190 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=66, PETRI_DIFFERENCE_MINUEND_FLOW=267, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=326, PETRI_PLACES=90, PETRI_TRANSITIONS=70} [2022-12-11 18:55:03,191 INFO L295 CegarLoopForPetriNet]: 66 programPoint places, 24 predicate places. [2022-12-11 18:55:03,191 INFO L495 AbstractCegarLoop]: Abstraction has has 90 places, 70 transitions, 326 flow [2022-12-11 18:55:03,191 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 52.5) internal successors, (315), 6 states have internal predecessors, (315), 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) [2022-12-11 18:55:03,191 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-11 18:55:03,191 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-11 18:55:03,191 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-12-11 18:55:03,191 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-11 18:55:03,192 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-11 18:55:03,192 INFO L85 PathProgramCache]: Analyzing trace with hash 2072817640, now seen corresponding path program 1 times [2022-12-11 18:55:03,192 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-11 18:55:03,192 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2005802725] [2022-12-11 18:55:03,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-11 18:55:03,192 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-11 18:55:03,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-11 18:55:03,280 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-11 18:55:03,281 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-11 18:55:03,281 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2005802725] [2022-12-11 18:55:03,281 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2005802725] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-11 18:55:03,281 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-11 18:55:03,281 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-11 18:55:03,281 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1925192517] [2022-12-11 18:55:03,281 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-11 18:55:03,282 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-11 18:55:03,282 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-11 18:55:03,282 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-11 18:55:03,282 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-12-11 18:55:03,283 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 51 out of 66 [2022-12-11 18:55:03,283 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 70 transitions, 326 flow. Second operand has 7 states, 7 states have (on average 52.42857142857143) internal successors, (367), 7 states have internal predecessors, (367), 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) [2022-12-11 18:55:03,283 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-11 18:55:03,283 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 51 of 66 [2022-12-11 18:55:03,283 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-11 18:55:03,376 INFO L130 PetriNetUnfolder]: 43/224 cut-off events. [2022-12-11 18:55:03,376 INFO L131 PetriNetUnfolder]: For 600/624 co-relation queries the response was YES. [2022-12-11 18:55:03,377 INFO L83 FinitePrefix]: Finished finitePrefix Result has 579 conditions, 224 events. 43/224 cut-off events. For 600/624 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 802 event pairs, 1 based on Foata normal form. 17/220 useless extension candidates. Maximal degree in co-relation 528. Up to 50 conditions per place. [2022-12-11 18:55:03,378 INFO L137 encePairwiseOnDemand]: 59/66 looper letters, 23 selfloop transitions, 21 changer transitions 8/94 dead transitions. [2022-12-11 18:55:03,378 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 94 transitions, 654 flow [2022-12-11 18:55:03,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-12-11 18:55:03,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-12-11 18:55:03,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 600 transitions. [2022-12-11 18:55:03,380 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.8264462809917356 [2022-12-11 18:55:03,380 INFO L175 Difference]: Start difference. First operand has 90 places, 70 transitions, 326 flow. Second operand 11 states and 600 transitions. [2022-12-11 18:55:03,380 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 97 places, 94 transitions, 654 flow [2022-12-11 18:55:03,382 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 94 transitions, 538 flow, removed 45 selfloop flow, removed 10 redundant places. [2022-12-11 18:55:03,384 INFO L231 Difference]: Finished difference. Result has 94 places, 76 transitions, 411 flow [2022-12-11 18:55:03,384 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=66, PETRI_DIFFERENCE_MINUEND_FLOW=280, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=411, PETRI_PLACES=94, PETRI_TRANSITIONS=76} [2022-12-11 18:55:03,386 INFO L295 CegarLoopForPetriNet]: 66 programPoint places, 28 predicate places. [2022-12-11 18:55:03,386 INFO L495 AbstractCegarLoop]: Abstraction has has 94 places, 76 transitions, 411 flow [2022-12-11 18:55:03,386 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 52.42857142857143) internal successors, (367), 7 states have internal predecessors, (367), 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) [2022-12-11 18:55:03,386 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-11 18:55:03,386 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-11 18:55:03,386 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-12-11 18:55:03,386 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-11 18:55:03,387 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-11 18:55:03,387 INFO L85 PathProgramCache]: Analyzing trace with hash -1626658320, now seen corresponding path program 2 times [2022-12-11 18:55:03,387 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-11 18:55:03,387 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [478632272] [2022-12-11 18:55:03,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-11 18:55:03,387 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-11 18:55:03,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-11 18:55:03,480 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-11 18:55:03,481 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-11 18:55:03,481 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [478632272] [2022-12-11 18:55:03,481 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [478632272] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-11 18:55:03,481 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-11 18:55:03,481 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-11 18:55:03,481 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1974971550] [2022-12-11 18:55:03,481 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-11 18:55:03,482 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-11 18:55:03,482 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-11 18:55:03,482 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-11 18:55:03,482 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-12-11 18:55:03,482 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 51 out of 66 [2022-12-11 18:55:03,483 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 76 transitions, 411 flow. Second operand has 7 states, 7 states have (on average 52.42857142857143) internal successors, (367), 7 states have internal predecessors, (367), 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) [2022-12-11 18:55:03,483 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-11 18:55:03,483 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 51 of 66 [2022-12-11 18:55:03,483 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-11 18:55:03,585 INFO L130 PetriNetUnfolder]: 36/213 cut-off events. [2022-12-11 18:55:03,585 INFO L131 PetriNetUnfolder]: For 773/808 co-relation queries the response was YES. [2022-12-11 18:55:03,586 INFO L83 FinitePrefix]: Finished finitePrefix Result has 599 conditions, 213 events. 36/213 cut-off events. For 773/808 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 761 event pairs, 1 based on Foata normal form. 27/220 useless extension candidates. Maximal degree in co-relation 555. Up to 44 conditions per place. [2022-12-11 18:55:03,587 INFO L137 encePairwiseOnDemand]: 59/66 looper letters, 20 selfloop transitions, 21 changer transitions 11/94 dead transitions. [2022-12-11 18:55:03,587 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 94 transitions, 743 flow [2022-12-11 18:55:03,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-12-11 18:55:03,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-12-11 18:55:03,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 594 transitions. [2022-12-11 18:55:03,588 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.8181818181818182 [2022-12-11 18:55:03,588 INFO L175 Difference]: Start difference. First operand has 94 places, 76 transitions, 411 flow. Second operand 11 states and 594 transitions. [2022-12-11 18:55:03,589 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 101 places, 94 transitions, 743 flow [2022-12-11 18:55:03,591 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 94 transitions, 687 flow, removed 19 selfloop flow, removed 5 redundant places. [2022-12-11 18:55:03,592 INFO L231 Difference]: Finished difference. Result has 101 places, 77 transitions, 464 flow [2022-12-11 18:55:03,593 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=66, PETRI_DIFFERENCE_MINUEND_FLOW=377, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=76, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=464, PETRI_PLACES=101, PETRI_TRANSITIONS=77} [2022-12-11 18:55:03,595 INFO L295 CegarLoopForPetriNet]: 66 programPoint places, 35 predicate places. [2022-12-11 18:55:03,595 INFO L495 AbstractCegarLoop]: Abstraction has has 101 places, 77 transitions, 464 flow [2022-12-11 18:55:03,595 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 52.42857142857143) internal successors, (367), 7 states have internal predecessors, (367), 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) [2022-12-11 18:55:03,595 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-11 18:55:03,596 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-11 18:55:03,596 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-12-11 18:55:03,596 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-11 18:55:03,596 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-11 18:55:03,596 INFO L85 PathProgramCache]: Analyzing trace with hash 661120386, now seen corresponding path program 3 times [2022-12-11 18:55:03,596 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-11 18:55:03,596 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1783972171] [2022-12-11 18:55:03,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-11 18:55:03,597 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-11 18:55:03,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-11 18:55:03,703 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-11 18:55:03,703 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-11 18:55:03,703 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1783972171] [2022-12-11 18:55:03,703 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1783972171] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-11 18:55:03,703 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-11 18:55:03,703 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-11 18:55:03,706 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1942815418] [2022-12-11 18:55:03,706 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-11 18:55:03,707 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-11 18:55:03,707 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-11 18:55:03,707 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-11 18:55:03,707 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-12-11 18:55:03,708 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 51 out of 66 [2022-12-11 18:55:03,708 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 77 transitions, 464 flow. Second operand has 7 states, 7 states have (on average 52.42857142857143) internal successors, (367), 7 states have internal predecessors, (367), 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) [2022-12-11 18:55:03,708 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-11 18:55:03,708 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 51 of 66 [2022-12-11 18:55:03,709 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-11 18:55:03,835 INFO L130 PetriNetUnfolder]: 35/197 cut-off events. [2022-12-11 18:55:03,835 INFO L131 PetriNetUnfolder]: For 861/888 co-relation queries the response was YES. [2022-12-11 18:55:03,836 INFO L83 FinitePrefix]: Finished finitePrefix Result has 600 conditions, 197 events. 35/197 cut-off events. For 861/888 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 729 event pairs, 0 based on Foata normal form. 23/202 useless extension candidates. Maximal degree in co-relation 552. Up to 42 conditions per place. [2022-12-11 18:55:03,837 INFO L137 encePairwiseOnDemand]: 59/66 looper letters, 25 selfloop transitions, 17 changer transitions 5/89 dead transitions. [2022-12-11 18:55:03,837 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 89 transitions, 712 flow [2022-12-11 18:55:03,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-12-11 18:55:03,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2022-12-11 18:55:03,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 647 transitions. [2022-12-11 18:55:03,862 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.8169191919191919 [2022-12-11 18:55:03,862 INFO L175 Difference]: Start difference. First operand has 101 places, 77 transitions, 464 flow. Second operand 12 states and 647 transitions. [2022-12-11 18:55:03,862 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 109 places, 89 transitions, 712 flow [2022-12-11 18:55:03,865 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 89 transitions, 638 flow, removed 19 selfloop flow, removed 9 redundant places. [2022-12-11 18:55:03,868 INFO L231 Difference]: Finished difference. Result has 104 places, 80 transitions, 497 flow [2022-12-11 18:55:03,868 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=66, PETRI_DIFFERENCE_MINUEND_FLOW=408, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=497, PETRI_PLACES=104, PETRI_TRANSITIONS=80} [2022-12-11 18:55:03,869 INFO L295 CegarLoopForPetriNet]: 66 programPoint places, 38 predicate places. [2022-12-11 18:55:03,869 INFO L495 AbstractCegarLoop]: Abstraction has has 104 places, 80 transitions, 497 flow [2022-12-11 18:55:03,869 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 52.42857142857143) internal successors, (367), 7 states have internal predecessors, (367), 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) [2022-12-11 18:55:03,869 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-11 18:55:03,869 INFO L214 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-11 18:55:03,869 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-12-11 18:55:03,869 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-11 18:55:03,870 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-11 18:55:03,870 INFO L85 PathProgramCache]: Analyzing trace with hash 345650302, now seen corresponding path program 1 times [2022-12-11 18:55:03,870 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-11 18:55:03,871 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [619053542] [2022-12-11 18:55:03,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-11 18:55:03,871 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-11 18:55:03,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-11 18:55:03,976 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-11 18:55:03,977 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-11 18:55:03,977 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [619053542] [2022-12-11 18:55:03,977 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [619053542] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-11 18:55:03,977 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1693310420] [2022-12-11 18:55:03,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-11 18:55:03,977 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-11 18:55:03,977 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-11 18:55:03,980 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-11 18:55:03,981 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-12-11 18:55:04,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-11 18:55:04,043 INFO L263 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 9 conjunts are in the unsatisfiable core [2022-12-11 18:55:04,047 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-11 18:55:04,176 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-11 18:55:04,177 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-11 18:55:04,297 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-11 18:55:04,298 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1693310420] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-11 18:55:04,298 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-11 18:55:04,298 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 13 [2022-12-11 18:55:04,298 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1008607931] [2022-12-11 18:55:04,298 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-11 18:55:04,299 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-12-11 18:55:04,299 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-11 18:55:04,299 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-12-11 18:55:04,299 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2022-12-11 18:55:04,300 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 51 out of 66 [2022-12-11 18:55:04,301 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 104 places, 80 transitions, 497 flow. Second operand has 13 states, 13 states have (on average 52.61538461538461) internal successors, (684), 13 states have internal predecessors, (684), 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) [2022-12-11 18:55:04,301 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-11 18:55:04,301 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 51 of 66 [2022-12-11 18:55:04,301 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-11 18:55:04,526 INFO L130 PetriNetUnfolder]: 53/296 cut-off events. [2022-12-11 18:55:04,526 INFO L131 PetriNetUnfolder]: For 1244/1284 co-relation queries the response was YES. [2022-12-11 18:55:04,527 INFO L83 FinitePrefix]: Finished finitePrefix Result has 887 conditions, 296 events. 53/296 cut-off events. For 1244/1284 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 1166 event pairs, 1 based on Foata normal form. 28/295 useless extension candidates. Maximal degree in co-relation 840. Up to 64 conditions per place. [2022-12-11 18:55:04,528 INFO L137 encePairwiseOnDemand]: 59/66 looper letters, 27 selfloop transitions, 36 changer transitions 14/119 dead transitions. [2022-12-11 18:55:04,528 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 121 places, 119 transitions, 1181 flow [2022-12-11 18:55:04,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-12-11 18:55:04,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2022-12-11 18:55:04,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 1079 transitions. [2022-12-11 18:55:04,531 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.8174242424242424 [2022-12-11 18:55:04,531 INFO L175 Difference]: Start difference. First operand has 104 places, 80 transitions, 497 flow. Second operand 20 states and 1079 transitions. [2022-12-11 18:55:04,531 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 121 places, 119 transitions, 1181 flow [2022-12-11 18:55:04,534 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 114 places, 119 transitions, 1145 flow, removed 10 selfloop flow, removed 7 redundant places. [2022-12-11 18:55:04,535 INFO L231 Difference]: Finished difference. Result has 124 places, 96 transitions, 822 flow [2022-12-11 18:55:04,535 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=66, PETRI_DIFFERENCE_MINUEND_FLOW=461, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=822, PETRI_PLACES=124, PETRI_TRANSITIONS=96} [2022-12-11 18:55:04,536 INFO L295 CegarLoopForPetriNet]: 66 programPoint places, 58 predicate places. [2022-12-11 18:55:04,536 INFO L495 AbstractCegarLoop]: Abstraction has has 124 places, 96 transitions, 822 flow [2022-12-11 18:55:04,536 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 52.61538461538461) internal successors, (684), 13 states have internal predecessors, (684), 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) [2022-12-11 18:55:04,537 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-11 18:55:04,537 INFO L214 CegarLoopForPetriNet]: trace histogram [4, 4, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-11 18:55:04,554 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-12-11 18:55:04,747 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-11 18:55:04,748 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-11 18:55:04,748 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-11 18:55:04,748 INFO L85 PathProgramCache]: Analyzing trace with hash 64894311, now seen corresponding path program 1 times [2022-12-11 18:55:04,749 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-11 18:55:04,749 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [9712216] [2022-12-11 18:55:04,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-11 18:55:04,749 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-11 18:55:04,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-11 18:55:04,882 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-12-11 18:55:04,882 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-11 18:55:04,883 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [9712216] [2022-12-11 18:55:04,883 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [9712216] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-11 18:55:04,883 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [265175536] [2022-12-11 18:55:04,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-11 18:55:04,883 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-11 18:55:04,883 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-11 18:55:04,884 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-11 18:55:04,886 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-12-11 18:55:04,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-11 18:55:04,943 INFO L263 TraceCheckSpWp]: Trace formula consists of 157 conjuncts, 11 conjunts are in the unsatisfiable core [2022-12-11 18:55:04,945 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-11 18:55:05,041 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-12-11 18:55:05,041 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-11 18:55:05,202 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-12-11 18:55:05,202 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [265175536] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-11 18:55:05,202 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-11 18:55:05,202 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 17 [2022-12-11 18:55:05,203 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1259702716] [2022-12-11 18:55:05,203 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-11 18:55:05,203 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-12-11 18:55:05,203 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-11 18:55:05,203 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-12-11 18:55:05,204 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=205, Unknown=0, NotChecked=0, Total=272 [2022-12-11 18:55:05,204 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 51 out of 66 [2022-12-11 18:55:05,205 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 124 places, 96 transitions, 822 flow. Second operand has 17 states, 17 states have (on average 52.64705882352941) internal successors, (895), 17 states have internal predecessors, (895), 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) [2022-12-11 18:55:05,205 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-11 18:55:05,205 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 51 of 66 [2022-12-11 18:55:05,205 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-11 18:55:05,519 INFO L130 PetriNetUnfolder]: 75/462 cut-off events. [2022-12-11 18:55:05,520 INFO L131 PetriNetUnfolder]: For 3309/3355 co-relation queries the response was YES. [2022-12-11 18:55:05,521 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1579 conditions, 462 events. 75/462 cut-off events. For 3309/3355 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 1885 event pairs, 0 based on Foata normal form. 31/444 useless extension candidates. Maximal degree in co-relation 1516. Up to 100 conditions per place. [2022-12-11 18:55:05,523 INFO L137 encePairwiseOnDemand]: 60/66 looper letters, 58 selfloop transitions, 25 changer transitions 26/151 dead transitions. [2022-12-11 18:55:05,523 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 143 places, 151 transitions, 2054 flow [2022-12-11 18:55:05,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2022-12-11 18:55:05,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2022-12-11 18:55:05,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 1350 transitions. [2022-12-11 18:55:05,527 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.8181818181818182 [2022-12-11 18:55:05,528 INFO L175 Difference]: Start difference. First operand has 124 places, 96 transitions, 822 flow. Second operand 25 states and 1350 transitions. [2022-12-11 18:55:05,528 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 143 places, 151 transitions, 2054 flow [2022-12-11 18:55:05,535 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 131 places, 151 transitions, 1641 flow, removed 189 selfloop flow, removed 12 redundant places. [2022-12-11 18:55:05,538 INFO L231 Difference]: Finished difference. Result has 150 places, 110 transitions, 949 flow [2022-12-11 18:55:05,538 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=66, PETRI_DIFFERENCE_MINUEND_FLOW=621, PETRI_DIFFERENCE_MINUEND_PLACES=107, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=96, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=25, PETRI_FLOW=949, PETRI_PLACES=150, PETRI_TRANSITIONS=110} [2022-12-11 18:55:05,539 INFO L295 CegarLoopForPetriNet]: 66 programPoint places, 84 predicate places. [2022-12-11 18:55:05,539 INFO L495 AbstractCegarLoop]: Abstraction has has 150 places, 110 transitions, 949 flow [2022-12-11 18:55:05,540 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 52.64705882352941) internal successors, (895), 17 states have internal predecessors, (895), 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) [2022-12-11 18:55:05,540 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-11 18:55:05,540 INFO L214 CegarLoopForPetriNet]: trace histogram [4, 4, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-11 18:55:05,546 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-12-11 18:55:05,746 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2022-12-11 18:55:05,747 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-11 18:55:05,747 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-11 18:55:05,747 INFO L85 PathProgramCache]: Analyzing trace with hash 1563130219, now seen corresponding path program 2 times [2022-12-11 18:55:05,748 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-11 18:55:05,748 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [200269266] [2022-12-11 18:55:05,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-11 18:55:05,748 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-11 18:55:05,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-11 18:55:05,854 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-11 18:55:05,854 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-11 18:55:05,854 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [200269266] [2022-12-11 18:55:05,854 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [200269266] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-11 18:55:05,855 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [236942814] [2022-12-11 18:55:05,855 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-11 18:55:05,855 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-11 18:55:05,855 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-11 18:55:05,856 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-11 18:55:05,858 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-12-11 18:55:05,912 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-11 18:55:05,912 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-11 18:55:05,913 INFO L263 TraceCheckSpWp]: Trace formula consists of 157 conjuncts, 11 conjunts are in the unsatisfiable core [2022-12-11 18:55:05,914 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-11 18:55:05,978 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-11 18:55:05,978 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-11 18:55:06,112 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-11 18:55:06,112 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [236942814] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-11 18:55:06,112 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-11 18:55:06,112 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 17 [2022-12-11 18:55:06,112 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1808597470] [2022-12-11 18:55:06,113 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-11 18:55:06,113 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-12-11 18:55:06,113 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-11 18:55:06,113 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-12-11 18:55:06,113 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=214, Unknown=0, NotChecked=0, Total=272 [2022-12-11 18:55:06,114 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 51 out of 66 [2022-12-11 18:55:06,115 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 150 places, 110 transitions, 949 flow. Second operand has 17 states, 17 states have (on average 52.64705882352941) internal successors, (895), 17 states have internal predecessors, (895), 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) [2022-12-11 18:55:06,115 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-11 18:55:06,115 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 51 of 66 [2022-12-11 18:55:06,115 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-11 18:55:06,550 INFO L130 PetriNetUnfolder]: 129/762 cut-off events. [2022-12-11 18:55:06,550 INFO L131 PetriNetUnfolder]: For 14140/14327 co-relation queries the response was YES. [2022-12-11 18:55:06,553 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3335 conditions, 762 events. 129/762 cut-off events. For 14140/14327 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 4393 event pairs, 0 based on Foata normal form. 40/725 useless extension candidates. Maximal degree in co-relation 3259. Up to 160 conditions per place. [2022-12-11 18:55:06,557 INFO L137 encePairwiseOnDemand]: 59/66 looper letters, 58 selfloop transitions, 81 changer transitions 26/207 dead transitions. [2022-12-11 18:55:06,557 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 173 places, 207 transitions, 3487 flow [2022-12-11 18:55:06,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2022-12-11 18:55:06,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2022-12-11 18:55:06,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 1783 transitions. [2022-12-11 18:55:06,559 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.8186409550045913 [2022-12-11 18:55:06,559 INFO L175 Difference]: Start difference. First operand has 150 places, 110 transitions, 949 flow. Second operand 33 states and 1783 transitions. [2022-12-11 18:55:06,559 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 173 places, 207 transitions, 3487 flow [2022-12-11 18:55:06,577 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 160 places, 207 transitions, 2911 flow, removed 280 selfloop flow, removed 13 redundant places. [2022-12-11 18:55:06,579 INFO L231 Difference]: Finished difference. Result has 183 places, 153 transitions, 1802 flow [2022-12-11 18:55:06,580 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=66, PETRI_DIFFERENCE_MINUEND_FLOW=823, PETRI_DIFFERENCE_MINUEND_PLACES=128, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=110, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=33, PETRI_FLOW=1802, PETRI_PLACES=183, PETRI_TRANSITIONS=153} [2022-12-11 18:55:06,580 INFO L295 CegarLoopForPetriNet]: 66 programPoint places, 117 predicate places. [2022-12-11 18:55:06,580 INFO L495 AbstractCegarLoop]: Abstraction has has 183 places, 153 transitions, 1802 flow [2022-12-11 18:55:06,581 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 52.64705882352941) internal successors, (895), 17 states have internal predecessors, (895), 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) [2022-12-11 18:55:06,581 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-11 18:55:06,581 INFO L214 CegarLoopForPetriNet]: trace histogram [4, 4, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-11 18:55:06,586 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-12-11 18:55:06,786 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-11 18:55:06,786 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-11 18:55:06,787 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-11 18:55:06,787 INFO L85 PathProgramCache]: Analyzing trace with hash 219801811, now seen corresponding path program 3 times [2022-12-11 18:55:06,787 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-11 18:55:06,787 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1365168990] [2022-12-11 18:55:06,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-11 18:55:06,787 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-11 18:55:06,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-11 18:55:06,902 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-12-11 18:55:06,903 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-11 18:55:06,903 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1365168990] [2022-12-11 18:55:06,903 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1365168990] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-11 18:55:06,903 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [993451253] [2022-12-11 18:55:06,903 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-11 18:55:06,903 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-11 18:55:06,903 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-11 18:55:06,905 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-11 18:55:06,907 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-12-11 18:55:06,960 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-12-11 18:55:06,960 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-11 18:55:06,961 INFO L263 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 11 conjunts are in the unsatisfiable core [2022-12-11 18:55:06,965 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-11 18:55:07,038 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-12-11 18:55:07,038 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-11 18:55:07,173 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-12-11 18:55:07,173 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [993451253] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-11 18:55:07,173 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-11 18:55:07,173 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 17 [2022-12-11 18:55:07,173 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [945484930] [2022-12-11 18:55:07,173 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-11 18:55:07,174 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-12-11 18:55:07,174 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-11 18:55:07,174 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-12-11 18:55:07,174 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=210, Unknown=0, NotChecked=0, Total=272 [2022-12-11 18:55:07,175 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 51 out of 66 [2022-12-11 18:55:07,176 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 183 places, 153 transitions, 1802 flow. Second operand has 17 states, 17 states have (on average 52.64705882352941) internal successors, (895), 17 states have internal predecessors, (895), 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) [2022-12-11 18:55:07,176 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-11 18:55:07,176 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 51 of 66 [2022-12-11 18:55:07,176 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-11 18:55:07,759 INFO L130 PetriNetUnfolder]: 167/1061 cut-off events. [2022-12-11 18:55:07,760 INFO L131 PetriNetUnfolder]: For 36354/36593 co-relation queries the response was YES. [2022-12-11 18:55:07,765 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5373 conditions, 1061 events. 167/1061 cut-off events. For 36354/36593 co-relation queries the response was YES. Maximal size of possible extension queue 48. Compared 7279 event pairs, 0 based on Foata normal form. 48/1000 useless extension candidates. Maximal degree in co-relation 5281. Up to 212 conditions per place. [2022-12-11 18:55:07,770 INFO L137 encePairwiseOnDemand]: 59/66 looper letters, 62 selfloop transitions, 128 changer transitions 31/263 dead transitions. [2022-12-11 18:55:07,771 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 209 places, 263 transitions, 5539 flow [2022-12-11 18:55:07,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2022-12-11 18:55:07,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2022-12-11 18:55:07,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 1941 transitions. [2022-12-11 18:55:07,773 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.8169191919191919 [2022-12-11 18:55:07,773 INFO L175 Difference]: Start difference. First operand has 183 places, 153 transitions, 1802 flow. Second operand 36 states and 1941 transitions. [2022-12-11 18:55:07,773 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 209 places, 263 transitions, 5539 flow [2022-12-11 18:55:07,850 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 191 places, 263 transitions, 4701 flow, removed 403 selfloop flow, removed 18 redundant places. [2022-12-11 18:55:07,853 INFO L231 Difference]: Finished difference. Result has 213 places, 200 transitions, 2829 flow [2022-12-11 18:55:07,854 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=66, PETRI_DIFFERENCE_MINUEND_FLOW=1494, PETRI_DIFFERENCE_MINUEND_PLACES=156, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=153, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=85, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=36, PETRI_FLOW=2829, PETRI_PLACES=213, PETRI_TRANSITIONS=200} [2022-12-11 18:55:07,854 INFO L295 CegarLoopForPetriNet]: 66 programPoint places, 147 predicate places. [2022-12-11 18:55:07,854 INFO L495 AbstractCegarLoop]: Abstraction has has 213 places, 200 transitions, 2829 flow [2022-12-11 18:55:07,854 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 52.64705882352941) internal successors, (895), 17 states have internal predecessors, (895), 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) [2022-12-11 18:55:07,855 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-11 18:55:07,855 INFO L214 CegarLoopForPetriNet]: trace histogram [5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-11 18:55:07,867 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-12-11 18:55:08,061 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-11 18:55:08,061 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-11 18:55:08,062 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-11 18:55:08,062 INFO L85 PathProgramCache]: Analyzing trace with hash 1195607409, now seen corresponding path program 4 times [2022-12-11 18:55:08,062 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-11 18:55:08,062 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1719926979] [2022-12-11 18:55:08,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-11 18:55:08,062 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-11 18:55:08,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-11 18:55:08,235 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 5 proven. 54 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-11 18:55:08,235 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-11 18:55:08,235 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1719926979] [2022-12-11 18:55:08,235 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1719926979] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-11 18:55:08,235 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1396155499] [2022-12-11 18:55:08,235 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-12-11 18:55:08,236 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-11 18:55:08,236 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-11 18:55:08,237 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-11 18:55:08,239 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-12-11 18:55:08,300 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-12-11 18:55:08,300 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-11 18:55:08,301 INFO L263 TraceCheckSpWp]: Trace formula consists of 181 conjuncts, 15 conjunts are in the unsatisfiable core [2022-12-11 18:55:08,309 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-11 18:55:08,431 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 5 proven. 54 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-11 18:55:08,431 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-11 18:55:08,659 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 5 proven. 54 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-11 18:55:08,660 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1396155499] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-11 18:55:08,660 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-11 18:55:08,660 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 14] total 26 [2022-12-11 18:55:08,661 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1163066081] [2022-12-11 18:55:08,662 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-11 18:55:08,662 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-12-11 18:55:08,662 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-11 18:55:08,662 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-12-11 18:55:08,663 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=123, Invalid=527, Unknown=0, NotChecked=0, Total=650 [2022-12-11 18:55:08,664 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 51 out of 66 [2022-12-11 18:55:08,665 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 213 places, 200 transitions, 2829 flow. Second operand has 26 states, 26 states have (on average 52.34615384615385) internal successors, (1361), 26 states have internal predecessors, (1361), 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) [2022-12-11 18:55:08,665 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-11 18:55:08,665 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 51 of 66 [2022-12-11 18:55:08,665 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-11 18:55:09,367 INFO L130 PetriNetUnfolder]: 229/1504 cut-off events. [2022-12-11 18:55:09,367 INFO L131 PetriNetUnfolder]: For 78067/78416 co-relation queries the response was YES. [2022-12-11 18:55:09,376 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9067 conditions, 1504 events. 229/1504 cut-off events. For 78067/78416 co-relation queries the response was YES. Maximal size of possible extension queue 63. Compared 11539 event pairs, 1 based on Foata normal form. 53/1401 useless extension candidates. Maximal degree in co-relation 8963. Up to 312 conditions per place. [2022-12-11 18:55:09,385 INFO L137 encePairwiseOnDemand]: 59/66 looper letters, 82 selfloop transitions, 172 changer transitions 32/328 dead transitions. [2022-12-11 18:55:09,385 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 242 places, 328 transitions, 9004 flow [2022-12-11 18:55:09,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2022-12-11 18:55:09,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2022-12-11 18:55:09,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 2098 transitions. [2022-12-11 18:55:09,388 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.815073815073815 [2022-12-11 18:55:09,388 INFO L175 Difference]: Start difference. First operand has 213 places, 200 transitions, 2829 flow. Second operand 39 states and 2098 transitions. [2022-12-11 18:55:09,388 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 242 places, 328 transitions, 9004 flow [2022-12-11 18:55:09,530 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 221 places, 328 transitions, 7311 flow, removed 815 selfloop flow, removed 21 redundant places. [2022-12-11 18:55:09,539 INFO L231 Difference]: Finished difference. Result has 245 places, 267 transitions, 4485 flow [2022-12-11 18:55:09,539 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=66, PETRI_DIFFERENCE_MINUEND_FLOW=2335, PETRI_DIFFERENCE_MINUEND_PLACES=183, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=200, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=112, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=39, PETRI_FLOW=4485, PETRI_PLACES=245, PETRI_TRANSITIONS=267} [2022-12-11 18:55:09,540 INFO L295 CegarLoopForPetriNet]: 66 programPoint places, 179 predicate places. [2022-12-11 18:55:09,540 INFO L495 AbstractCegarLoop]: Abstraction has has 245 places, 267 transitions, 4485 flow [2022-12-11 18:55:09,541 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 52.34615384615385) internal successors, (1361), 26 states have internal predecessors, (1361), 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) [2022-12-11 18:55:09,541 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-11 18:55:09,541 INFO L214 CegarLoopForPetriNet]: trace histogram [5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-11 18:55:09,548 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-12-11 18:55:09,748 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2022-12-11 18:55:09,748 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-11 18:55:09,748 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-11 18:55:09,748 INFO L85 PathProgramCache]: Analyzing trace with hash 1715363599, now seen corresponding path program 5 times [2022-12-11 18:55:09,748 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-11 18:55:09,749 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1152151377] [2022-12-11 18:55:09,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-11 18:55:09,749 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-11 18:55:09,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-11 18:55:09,957 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 0 proven. 59 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-11 18:55:09,958 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-11 18:55:09,958 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1152151377] [2022-12-11 18:55:09,958 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1152151377] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-11 18:55:09,958 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [336345864] [2022-12-11 18:55:09,958 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-12-11 18:55:09,958 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-11 18:55:09,958 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-11 18:55:09,959 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-11 18:55:09,961 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-12-11 18:55:10,019 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2022-12-11 18:55:10,020 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-11 18:55:10,021 INFO L263 TraceCheckSpWp]: Trace formula consists of 181 conjuncts, 15 conjunts are in the unsatisfiable core [2022-12-11 18:55:10,022 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-11 18:55:10,098 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 0 proven. 59 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-11 18:55:10,099 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-11 18:55:10,305 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 0 proven. 59 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-11 18:55:10,305 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [336345864] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-11 18:55:10,305 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-11 18:55:10,305 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 14] total 26 [2022-12-11 18:55:10,305 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [700855028] [2022-12-11 18:55:10,306 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-11 18:55:10,306 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-12-11 18:55:10,306 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-11 18:55:10,306 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-12-11 18:55:10,306 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=148, Invalid=502, Unknown=0, NotChecked=0, Total=650 [2022-12-11 18:55:10,307 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 51 out of 66 [2022-12-11 18:55:10,308 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 245 places, 267 transitions, 4485 flow. Second operand has 26 states, 26 states have (on average 52.30769230769231) internal successors, (1360), 26 states have internal predecessors, (1360), 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) [2022-12-11 18:55:10,308 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-11 18:55:10,308 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 51 of 66 [2022-12-11 18:55:10,308 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-11 18:55:11,559 INFO L130 PetriNetUnfolder]: 368/2418 cut-off events. [2022-12-11 18:55:11,559 INFO L131 PetriNetUnfolder]: For 190773/191329 co-relation queries the response was YES. [2022-12-11 18:55:11,569 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16834 conditions, 2418 events. 368/2418 cut-off events. For 190773/191329 co-relation queries the response was YES. Maximal size of possible extension queue 77. Compared 20003 event pairs, 1 based on Foata normal form. 83/2251 useless extension candidates. Maximal degree in co-relation 16715. Up to 528 conditions per place. [2022-12-11 18:55:11,587 INFO L137 encePairwiseOnDemand]: 59/66 looper letters, 82 selfloop transitions, 319 changer transitions 38/481 dead transitions. [2022-12-11 18:55:11,587 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 285 places, 481 transitions, 14993 flow [2022-12-11 18:55:11,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2022-12-11 18:55:11,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2022-12-11 18:55:11,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 2803 transitions. [2022-12-11 18:55:11,596 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.8167249417249417 [2022-12-11 18:55:11,596 INFO L175 Difference]: Start difference. First operand has 245 places, 267 transitions, 4485 flow. Second operand 52 states and 2803 transitions. [2022-12-11 18:55:11,596 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 285 places, 481 transitions, 14993 flow [2022-12-11 18:55:11,800 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 264 places, 481 transitions, 11458 flow, removed 1719 selfloop flow, removed 21 redundant places. [2022-12-11 18:55:11,807 INFO L231 Difference]: Finished difference. Result has 296 places, 417 transitions, 8462 flow [2022-12-11 18:55:11,808 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=66, PETRI_DIFFERENCE_MINUEND_FLOW=3727, PETRI_DIFFERENCE_MINUEND_PLACES=213, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=267, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=190, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=52, PETRI_FLOW=8462, PETRI_PLACES=296, PETRI_TRANSITIONS=417} [2022-12-11 18:55:11,808 INFO L295 CegarLoopForPetriNet]: 66 programPoint places, 230 predicate places. [2022-12-11 18:55:11,808 INFO L495 AbstractCegarLoop]: Abstraction has has 296 places, 417 transitions, 8462 flow [2022-12-11 18:55:11,808 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 52.30769230769231) internal successors, (1360), 26 states have internal predecessors, (1360), 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) [2022-12-11 18:55:11,809 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-11 18:55:11,809 INFO L214 CegarLoopForPetriNet]: trace histogram [10, 10, 9, 9, 9, 8, 8, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-11 18:55:11,834 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-12-11 18:55:12,013 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-11 18:55:12,013 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-11 18:55:12,013 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-11 18:55:12,014 INFO L85 PathProgramCache]: Analyzing trace with hash 725547055, now seen corresponding path program 6 times [2022-12-11 18:55:12,014 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-11 18:55:12,014 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2088196043] [2022-12-11 18:55:12,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-11 18:55:12,014 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-11 18:55:12,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-11 18:55:12,394 INFO L134 CoverageAnalysis]: Checked inductivity of 317 backedges. 0 proven. 312 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-12-11 18:55:12,395 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-11 18:55:12,395 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2088196043] [2022-12-11 18:55:12,395 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2088196043] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-11 18:55:12,395 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1995149364] [2022-12-11 18:55:12,395 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-12-11 18:55:12,395 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-11 18:55:12,395 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-11 18:55:12,396 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-11 18:55:12,398 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-12-11 18:55:12,506 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 12 check-sat command(s) [2022-12-11 18:55:12,506 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-11 18:55:12,507 INFO L263 TraceCheckSpWp]: Trace formula consists of 253 conjuncts, 23 conjunts are in the unsatisfiable core [2022-12-11 18:55:12,509 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-11 18:55:12,743 INFO L134 CoverageAnalysis]: Checked inductivity of 317 backedges. 0 proven. 312 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-12-11 18:55:12,744 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-11 18:55:13,303 INFO L134 CoverageAnalysis]: Checked inductivity of 317 backedges. 0 proven. 312 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-12-11 18:55:13,303 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1995149364] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-11 18:55:13,303 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-11 18:55:13,303 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22, 22] total 41 [2022-12-11 18:55:13,303 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [614015050] [2022-12-11 18:55:13,304 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-11 18:55:13,304 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2022-12-11 18:55:13,304 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-11 18:55:13,304 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2022-12-11 18:55:13,305 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=397, Invalid=1243, Unknown=0, NotChecked=0, Total=1640 [2022-12-11 18:55:13,306 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 51 out of 66 [2022-12-11 18:55:13,308 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 296 places, 417 transitions, 8462 flow. Second operand has 41 states, 41 states have (on average 52.26829268292683) internal successors, (2143), 41 states have internal predecessors, (2143), 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) [2022-12-11 18:55:13,308 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-11 18:55:13,308 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 51 of 66 [2022-12-11 18:55:13,308 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-11 18:55:14,901 INFO L130 PetriNetUnfolder]: 414/2846 cut-off events. [2022-12-11 18:55:14,901 INFO L131 PetriNetUnfolder]: For 226684/226980 co-relation queries the response was YES. [2022-12-11 18:55:14,915 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19244 conditions, 2846 events. 414/2846 cut-off events. For 226684/226980 co-relation queries the response was YES. Maximal size of possible extension queue 78. Compared 22003 event pairs, 0 based on Foata normal form. 46/2587 useless extension candidates. Maximal degree in co-relation 19103. Up to 590 conditions per place. [2022-12-11 18:55:14,931 INFO L137 encePairwiseOnDemand]: 60/66 looper letters, 390 selfloop transitions, 59 changer transitions 62/553 dead transitions. [2022-12-11 18:55:14,931 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 343 places, 553 transitions, 18258 flow [2022-12-11 18:55:14,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2022-12-11 18:55:14,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2022-12-11 18:55:14,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 3282 transitions. [2022-12-11 18:55:14,934 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.8152011922503726 [2022-12-11 18:55:14,934 INFO L175 Difference]: Start difference. First operand has 296 places, 417 transitions, 8462 flow. Second operand 61 states and 3282 transitions. [2022-12-11 18:55:14,934 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 343 places, 553 transitions, 18258 flow [2022-12-11 18:55:15,199 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 323 places, 553 transitions, 14781 flow, removed 1714 selfloop flow, removed 20 redundant places. [2022-12-11 18:55:15,207 INFO L231 Difference]: Finished difference. Result has 368 places, 447 transitions, 7972 flow [2022-12-11 18:55:15,207 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=66, PETRI_DIFFERENCE_MINUEND_FLOW=6321, PETRI_DIFFERENCE_MINUEND_PLACES=263, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=417, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=376, PETRI_DIFFERENCE_SUBTRAHEND_STATES=61, PETRI_FLOW=7972, PETRI_PLACES=368, PETRI_TRANSITIONS=447} [2022-12-11 18:55:15,208 INFO L295 CegarLoopForPetriNet]: 66 programPoint places, 302 predicate places. [2022-12-11 18:55:15,208 INFO L495 AbstractCegarLoop]: Abstraction has has 368 places, 447 transitions, 7972 flow [2022-12-11 18:55:15,208 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 52.26829268292683) internal successors, (2143), 41 states have internal predecessors, (2143), 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) [2022-12-11 18:55:15,208 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-11 18:55:15,209 INFO L214 CegarLoopForPetriNet]: trace histogram [10, 10, 9, 9, 9, 8, 8, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-11 18:55:15,216 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-12-11 18:55:15,411 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-11 18:55:15,411 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-11 18:55:15,412 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-11 18:55:15,412 INFO L85 PathProgramCache]: Analyzing trace with hash 1287869275, now seen corresponding path program 7 times [2022-12-11 18:55:15,412 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-11 18:55:15,412 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1419424799] [2022-12-11 18:55:15,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-11 18:55:15,412 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-11 18:55:15,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-11 18:55:15,754 INFO L134 CoverageAnalysis]: Checked inductivity of 317 backedges. 0 proven. 312 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-12-11 18:55:15,754 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-11 18:55:15,754 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1419424799] [2022-12-11 18:55:15,754 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1419424799] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-11 18:55:15,755 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [161634413] [2022-12-11 18:55:15,755 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-12-11 18:55:15,755 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-11 18:55:15,755 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-11 18:55:15,756 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-11 18:55:15,758 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-12-11 18:55:15,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-11 18:55:15,830 INFO L263 TraceCheckSpWp]: Trace formula consists of 253 conjuncts, 23 conjunts are in the unsatisfiable core [2022-12-11 18:55:15,832 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-11 18:55:16,007 INFO L134 CoverageAnalysis]: Checked inductivity of 317 backedges. 0 proven. 312 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-12-11 18:55:16,008 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-11 18:55:16,583 INFO L134 CoverageAnalysis]: Checked inductivity of 317 backedges. 0 proven. 312 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-12-11 18:55:16,584 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [161634413] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-11 18:55:16,584 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-11 18:55:16,584 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22, 22] total 41 [2022-12-11 18:55:16,584 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [48126068] [2022-12-11 18:55:16,584 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-11 18:55:16,584 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2022-12-11 18:55:16,584 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-11 18:55:16,585 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2022-12-11 18:55:16,585 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=352, Invalid=1288, Unknown=0, NotChecked=0, Total=1640 [2022-12-11 18:55:16,587 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 51 out of 66 [2022-12-11 18:55:16,588 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 368 places, 447 transitions, 7972 flow. Second operand has 41 states, 41 states have (on average 52.26829268292683) internal successors, (2143), 41 states have internal predecessors, (2143), 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) [2022-12-11 18:55:16,588 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-11 18:55:16,588 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 51 of 66 [2022-12-11 18:55:16,588 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-11 18:55:18,486 INFO L130 PetriNetUnfolder]: 500/3627 cut-off events. [2022-12-11 18:55:18,486 INFO L131 PetriNetUnfolder]: For 450686/451101 co-relation queries the response was YES. [2022-12-11 18:55:18,507 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25557 conditions, 3627 events. 500/3627 cut-off events. For 450686/451101 co-relation queries the response was YES. Maximal size of possible extension queue 84. Compared 29942 event pairs, 0 based on Foata normal form. 64/3300 useless extension candidates. Maximal degree in co-relation 25384. Up to 560 conditions per place. [2022-12-11 18:55:18,526 INFO L137 encePairwiseOnDemand]: 59/66 looper letters, 330 selfloop transitions, 235 changer transitions 62/669 dead transitions. [2022-12-11 18:55:18,526 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 415 places, 669 transitions, 22439 flow [2022-12-11 18:55:18,526 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 69 states. [2022-12-11 18:55:18,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69 states. [2022-12-11 18:55:18,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 3709 transitions. [2022-12-11 18:55:18,529 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.8144488361879666 [2022-12-11 18:55:18,529 INFO L175 Difference]: Start difference. First operand has 368 places, 447 transitions, 7972 flow. Second operand 69 states and 3709 transitions. [2022-12-11 18:55:18,529 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 415 places, 669 transitions, 22439 flow [2022-12-11 18:55:19,077 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 379 places, 669 transitions, 19294 flow, removed 1544 selfloop flow, removed 36 redundant places. [2022-12-11 18:55:19,086 INFO L231 Difference]: Finished difference. Result has 420 places, 533 transitions, 10402 flow [2022-12-11 18:55:19,086 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=66, PETRI_DIFFERENCE_MINUEND_FLOW=6809, PETRI_DIFFERENCE_MINUEND_PLACES=311, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=447, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=163, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=252, PETRI_DIFFERENCE_SUBTRAHEND_STATES=69, PETRI_FLOW=10402, PETRI_PLACES=420, PETRI_TRANSITIONS=533} [2022-12-11 18:55:19,087 INFO L295 CegarLoopForPetriNet]: 66 programPoint places, 354 predicate places. [2022-12-11 18:55:19,087 INFO L495 AbstractCegarLoop]: Abstraction has has 420 places, 533 transitions, 10402 flow [2022-12-11 18:55:19,087 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 52.26829268292683) internal successors, (2143), 41 states have internal predecessors, (2143), 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) [2022-12-11 18:55:19,087 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-11 18:55:19,088 INFO L214 CegarLoopForPetriNet]: trace histogram [10, 10, 9, 9, 9, 8, 8, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-11 18:55:19,092 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-12-11 18:55:19,288 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2022-12-11 18:55:19,289 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-11 18:55:19,289 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-11 18:55:19,289 INFO L85 PathProgramCache]: Analyzing trace with hash -638373129, now seen corresponding path program 8 times [2022-12-11 18:55:19,289 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-11 18:55:19,289 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [475352006] [2022-12-11 18:55:19,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-11 18:55:19,289 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-11 18:55:19,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-11 18:55:19,598 INFO L134 CoverageAnalysis]: Checked inductivity of 317 backedges. 0 proven. 312 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-12-11 18:55:19,598 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-11 18:55:19,598 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [475352006] [2022-12-11 18:55:19,598 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [475352006] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-11 18:55:19,598 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1360725435] [2022-12-11 18:55:19,598 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-11 18:55:19,598 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-11 18:55:19,599 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-11 18:55:19,600 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-11 18:55:19,602 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-12-11 18:55:19,681 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-11 18:55:19,681 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-11 18:55:19,683 INFO L263 TraceCheckSpWp]: Trace formula consists of 253 conjuncts, 23 conjunts are in the unsatisfiable core [2022-12-11 18:55:19,684 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-11 18:55:19,857 INFO L134 CoverageAnalysis]: Checked inductivity of 317 backedges. 0 proven. 312 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-12-11 18:55:19,858 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-11 18:55:20,338 INFO L134 CoverageAnalysis]: Checked inductivity of 317 backedges. 0 proven. 312 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-12-11 18:55:20,338 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1360725435] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-11 18:55:20,339 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-11 18:55:20,339 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22, 22] total 41 [2022-12-11 18:55:20,339 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1230644399] [2022-12-11 18:55:20,339 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-11 18:55:20,339 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2022-12-11 18:55:20,339 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-11 18:55:20,340 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2022-12-11 18:55:20,340 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=298, Invalid=1342, Unknown=0, NotChecked=0, Total=1640 [2022-12-11 18:55:20,342 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 51 out of 66 [2022-12-11 18:55:20,343 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 420 places, 533 transitions, 10402 flow. Second operand has 41 states, 41 states have (on average 52.26829268292683) internal successors, (2143), 41 states have internal predecessors, (2143), 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) [2022-12-11 18:55:20,343 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-11 18:55:20,343 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 51 of 66 [2022-12-11 18:55:20,343 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-11 18:55:22,697 INFO L130 PetriNetUnfolder]: 652/4732 cut-off events. [2022-12-11 18:55:22,698 INFO L131 PetriNetUnfolder]: For 794031/795528 co-relation queries the response was YES. [2022-12-11 18:55:22,850 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37096 conditions, 4732 events. 652/4732 cut-off events. For 794031/795528 co-relation queries the response was YES. Maximal size of possible extension queue 122. Compared 43135 event pairs, 0 based on Foata normal form. 113/4343 useless extension candidates. Maximal degree in co-relation 36902. Up to 734 conditions per place. [2022-12-11 18:55:22,981 INFO L137 encePairwiseOnDemand]: 59/66 looper letters, 164 selfloop transitions, 584 changer transitions 62/852 dead transitions. [2022-12-11 18:55:22,981 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 475 places, 852 transitions, 30137 flow [2022-12-11 18:55:22,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 77 states. [2022-12-11 18:55:22,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 77 states. [2022-12-11 18:55:22,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 4141 transitions. [2022-12-11 18:55:22,984 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.8148366784730421 [2022-12-11 18:55:22,984 INFO L175 Difference]: Start difference. First operand has 420 places, 533 transitions, 10402 flow. Second operand 77 states and 4141 transitions. [2022-12-11 18:55:22,984 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 475 places, 852 transitions, 30137 flow [2022-12-11 18:55:24,202 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 438 places, 852 transitions, 26326 flow, removed 1855 selfloop flow, removed 37 redundant places. [2022-12-11 18:55:24,215 INFO L231 Difference]: Finished difference. Result has 484 places, 693 transitions, 15191 flow [2022-12-11 18:55:24,216 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=66, PETRI_DIFFERENCE_MINUEND_FLOW=8797, PETRI_DIFFERENCE_MINUEND_PLACES=362, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=533, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=439, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=77, PETRI_FLOW=15191, PETRI_PLACES=484, PETRI_TRANSITIONS=693} [2022-12-11 18:55:24,216 INFO L295 CegarLoopForPetriNet]: 66 programPoint places, 418 predicate places. [2022-12-11 18:55:24,216 INFO L495 AbstractCegarLoop]: Abstraction has has 484 places, 693 transitions, 15191 flow [2022-12-11 18:55:24,217 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 52.26829268292683) internal successors, (2143), 41 states have internal predecessors, (2143), 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) [2022-12-11 18:55:24,217 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-11 18:55:24,217 INFO L214 CegarLoopForPetriNet]: trace histogram [10, 10, 9, 9, 9, 8, 8, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-11 18:55:24,222 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2022-12-11 18:55:24,417 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-12-11 18:55:24,417 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-11 18:55:24,418 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-11 18:55:24,418 INFO L85 PathProgramCache]: Analyzing trace with hash -1251296069, now seen corresponding path program 9 times [2022-12-11 18:55:24,418 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-11 18:55:24,418 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1085681738] [2022-12-11 18:55:24,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-11 18:55:24,418 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-11 18:55:24,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-11 18:55:24,678 INFO L134 CoverageAnalysis]: Checked inductivity of 317 backedges. 0 proven. 312 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-12-11 18:55:24,679 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-11 18:55:24,679 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1085681738] [2022-12-11 18:55:24,679 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1085681738] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-11 18:55:24,679 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1151871853] [2022-12-11 18:55:24,679 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-11 18:55:24,679 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-11 18:55:24,679 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-11 18:55:24,680 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-11 18:55:24,707 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-12-11 18:55:24,753 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 10 check-sat command(s) [2022-12-11 18:55:24,754 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-11 18:55:24,755 INFO L263 TraceCheckSpWp]: Trace formula consists of 253 conjuncts, 26 conjunts are in the unsatisfiable core [2022-12-11 18:55:24,756 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-11 18:55:24,893 INFO L134 CoverageAnalysis]: Checked inductivity of 317 backedges. 0 proven. 312 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-12-11 18:55:24,893 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-11 18:55:25,266 INFO L134 CoverageAnalysis]: Checked inductivity of 317 backedges. 0 proven. 312 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-12-11 18:55:25,267 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1151871853] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-11 18:55:25,267 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-11 18:55:25,267 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22, 22] total 41 [2022-12-11 18:55:25,267 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1876791447] [2022-12-11 18:55:25,267 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-11 18:55:25,267 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2022-12-11 18:55:25,267 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-11 18:55:25,268 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2022-12-11 18:55:25,268 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=334, Invalid=1306, Unknown=0, NotChecked=0, Total=1640 [2022-12-11 18:55:25,269 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 51 out of 66 [2022-12-11 18:55:25,270 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 484 places, 693 transitions, 15191 flow. Second operand has 41 states, 41 states have (on average 52.26829268292683) internal successors, (2143), 41 states have internal predecessors, (2143), 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) [2022-12-11 18:55:25,270 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-11 18:55:25,270 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 51 of 66 [2022-12-11 18:55:25,271 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-11 18:55:28,646 INFO L130 PetriNetUnfolder]: 784/5654 cut-off events. [2022-12-11 18:55:28,646 INFO L131 PetriNetUnfolder]: For 1384677/1385536 co-relation queries the response was YES. [2022-12-11 18:55:28,697 INFO L83 FinitePrefix]: Finished finitePrefix Result has 52203 conditions, 5654 events. 784/5654 cut-off events. For 1384677/1385536 co-relation queries the response was YES. Maximal size of possible extension queue 123. Compared 52402 event pairs, 0 based on Foata normal form. 137/5192 useless extension candidates. Maximal degree in co-relation 51983. Up to 888 conditions per place. [2022-12-11 18:55:28,745 INFO L137 encePairwiseOnDemand]: 59/66 looper letters, 151 selfloop transitions, 726 changer transitions 62/981 dead transitions. [2022-12-11 18:55:28,746 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 555 places, 981 transitions, 41807 flow [2022-12-11 18:55:28,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 93 states. [2022-12-11 18:55:28,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 93 states. [2022-12-11 18:55:28,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 5011 transitions. [2022-12-11 18:55:28,750 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.8163897034864777 [2022-12-11 18:55:28,750 INFO L175 Difference]: Start difference. First operand has 484 places, 693 transitions, 15191 flow. Second operand 93 states and 5011 transitions. [2022-12-11 18:55:28,750 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 555 places, 981 transitions, 41807 flow [2022-12-11 18:55:30,305 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 519 places, 981 transitions, 32242 flow, removed 4719 selfloop flow, removed 36 redundant places. [2022-12-11 18:55:30,321 INFO L231 Difference]: Finished difference. Result has 577 places, 817 transitions, 19104 flow [2022-12-11 18:55:30,321 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=66, PETRI_DIFFERENCE_MINUEND_FLOW=12212, PETRI_DIFFERENCE_MINUEND_PLACES=427, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=693, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=603, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=93, PETRI_FLOW=19104, PETRI_PLACES=577, PETRI_TRANSITIONS=817} [2022-12-11 18:55:30,322 INFO L295 CegarLoopForPetriNet]: 66 programPoint places, 511 predicate places. [2022-12-11 18:55:30,322 INFO L495 AbstractCegarLoop]: Abstraction has has 577 places, 817 transitions, 19104 flow [2022-12-11 18:55:30,323 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 52.26829268292683) internal successors, (2143), 41 states have internal predecessors, (2143), 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) [2022-12-11 18:55:30,323 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-11 18:55:30,323 INFO L214 CegarLoopForPetriNet]: trace histogram [13, 13, 13, 13, 12, 12, 12, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-11 18:55:30,327 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2022-12-11 18:55:30,527 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2022-12-11 18:55:30,527 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-11 18:55:30,527 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-11 18:55:30,528 INFO L85 PathProgramCache]: Analyzing trace with hash 1909001612, now seen corresponding path program 10 times [2022-12-11 18:55:30,528 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-11 18:55:30,528 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1830590035] [2022-12-11 18:55:30,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-11 18:55:30,528 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-11 18:55:30,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-11 18:55:31,013 INFO L134 CoverageAnalysis]: Checked inductivity of 708 backedges. 0 proven. 708 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-11 18:55:31,013 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-11 18:55:31,013 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1830590035] [2022-12-11 18:55:31,014 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1830590035] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-11 18:55:31,014 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1894545915] [2022-12-11 18:55:31,014 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-12-11 18:55:31,014 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-11 18:55:31,014 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-11 18:55:31,015 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-11 18:55:31,016 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-12-11 18:55:31,090 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-12-11 18:55:31,091 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-11 18:55:31,092 INFO L263 TraceCheckSpWp]: Trace formula consists of 317 conjuncts, 32 conjunts are in the unsatisfiable core [2022-12-11 18:55:31,094 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-11 18:55:31,254 INFO L134 CoverageAnalysis]: Checked inductivity of 708 backedges. 0 proven. 708 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-11 18:55:31,254 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-11 18:55:31,733 INFO L134 CoverageAnalysis]: Checked inductivity of 708 backedges. 0 proven. 708 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-11 18:55:31,733 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1894545915] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-11 18:55:31,734 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-11 18:55:31,734 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 31, 31] total 47 [2022-12-11 18:55:31,734 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1000563889] [2022-12-11 18:55:31,734 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-11 18:55:31,734 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2022-12-11 18:55:31,734 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-11 18:55:31,735 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2022-12-11 18:55:31,735 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=495, Invalid=1667, Unknown=0, NotChecked=0, Total=2162 [2022-12-11 18:55:31,736 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 51 out of 66 [2022-12-11 18:55:31,738 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 577 places, 817 transitions, 19104 flow. Second operand has 47 states, 47 states have (on average 52.191489361702125) internal successors, (2453), 47 states have internal predecessors, (2453), 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) [2022-12-11 18:55:31,738 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-11 18:55:31,738 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 51 of 66 [2022-12-11 18:55:31,738 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-11 18:55:36,253 INFO L130 PetriNetUnfolder]: 880/6420 cut-off events. [2022-12-11 18:55:36,253 INFO L131 PetriNetUnfolder]: For 1946530/1947606 co-relation queries the response was YES. [2022-12-11 18:55:36,314 INFO L83 FinitePrefix]: Finished finitePrefix Result has 65184 conditions, 6420 events. 880/6420 cut-off events. For 1946530/1947606 co-relation queries the response was YES. Maximal size of possible extension queue 122. Compared 58691 event pairs, 0 based on Foata normal form. 156/5893 useless extension candidates. Maximal degree in co-relation 64928. Up to 1046 conditions per place. [2022-12-11 18:55:36,360 INFO L137 encePairwiseOnDemand]: 59/66 looper letters, 135 selfloop transitions, 831 changer transitions 61/1069 dead transitions. [2022-12-11 18:55:36,360 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 658 places, 1069 transitions, 50885 flow [2022-12-11 18:55:36,361 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 103 states. [2022-12-11 18:55:36,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 103 states. [2022-12-11 18:55:36,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 5538 transitions. [2022-12-11 18:55:36,365 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.8146513680494263 [2022-12-11 18:55:36,365 INFO L175 Difference]: Start difference. First operand has 577 places, 817 transitions, 19104 flow. Second operand 103 states and 5538 transitions. [2022-12-11 18:55:36,365 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 658 places, 1069 transitions, 50885 flow [2022-12-11 18:55:39,310 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 614 places, 1069 transitions, 39662 flow, removed 5458 selfloop flow, removed 44 redundant places. [2022-12-11 18:55:39,328 INFO L231 Difference]: Finished difference. Result has 661 places, 927 transitions, 22388 flow [2022-12-11 18:55:39,329 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=66, PETRI_DIFFERENCE_MINUEND_FLOW=15229, PETRI_DIFFERENCE_MINUEND_PLACES=512, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=817, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=722, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=93, PETRI_DIFFERENCE_SUBTRAHEND_STATES=103, PETRI_FLOW=22388, PETRI_PLACES=661, PETRI_TRANSITIONS=927} [2022-12-11 18:55:39,329 INFO L295 CegarLoopForPetriNet]: 66 programPoint places, 595 predicate places. [2022-12-11 18:55:39,329 INFO L495 AbstractCegarLoop]: Abstraction has has 661 places, 927 transitions, 22388 flow [2022-12-11 18:55:39,330 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 47 states, 47 states have (on average 52.191489361702125) internal successors, (2453), 47 states have internal predecessors, (2453), 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) [2022-12-11 18:55:39,330 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-11 18:55:39,330 INFO L214 CegarLoopForPetriNet]: trace histogram [20, 20, 20, 20, 19, 19, 19, 19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-11 18:55:39,335 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-12-11 18:55:39,534 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2022-12-11 18:55:39,535 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-11 18:55:39,535 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-11 18:55:39,535 INFO L85 PathProgramCache]: Analyzing trace with hash -1301351943, now seen corresponding path program 11 times [2022-12-11 18:55:39,536 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-11 18:55:39,536 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1072284056] [2022-12-11 18:55:39,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-11 18:55:39,536 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-11 18:55:39,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-11 18:55:40,404 INFO L134 CoverageAnalysis]: Checked inductivity of 1786 backedges. 0 proven. 1786 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-11 18:55:40,404 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-11 18:55:40,404 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1072284056] [2022-12-11 18:55:40,404 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1072284056] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-11 18:55:40,404 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1876994442] [2022-12-11 18:55:40,404 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-12-11 18:55:40,404 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-11 18:55:40,405 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-11 18:55:40,440 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-11 18:55:40,442 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-12-11 18:55:40,535 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 21 check-sat command(s) [2022-12-11 18:55:40,535 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-11 18:55:40,537 INFO L263 TraceCheckSpWp]: Trace formula consists of 429 conjuncts, 46 conjunts are in the unsatisfiable core [2022-12-11 18:55:40,540 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-11 18:55:40,787 INFO L134 CoverageAnalysis]: Checked inductivity of 1786 backedges. 0 proven. 1786 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-11 18:55:40,787 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-11 18:55:41,666 INFO L134 CoverageAnalysis]: Checked inductivity of 1786 backedges. 0 proven. 1786 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-11 18:55:41,666 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1876994442] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-11 18:55:41,666 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-11 18:55:41,666 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [45, 45, 45] total 88 [2022-12-11 18:55:41,666 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1585534986] [2022-12-11 18:55:41,666 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-11 18:55:41,667 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 88 states [2022-12-11 18:55:41,667 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-11 18:55:41,668 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 88 interpolants. [2022-12-11 18:55:41,669 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1747, Invalid=5909, Unknown=0, NotChecked=0, Total=7656 [2022-12-11 18:55:41,671 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 51 out of 66 [2022-12-11 18:55:41,674 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 661 places, 927 transitions, 22388 flow. Second operand has 88 states, 88 states have (on average 52.10227272727273) internal successors, (4585), 88 states have internal predecessors, (4585), 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) [2022-12-11 18:55:41,674 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-11 18:55:41,674 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 51 of 66 [2022-12-11 18:55:41,674 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-11 18:55:46,626 INFO L130 PetriNetUnfolder]: 904/6652 cut-off events. [2022-12-11 18:55:46,626 INFO L131 PetriNetUnfolder]: For 2340374/2340700 co-relation queries the response was YES. [2022-12-11 18:55:46,688 INFO L83 FinitePrefix]: Finished finitePrefix Result has 68705 conditions, 6652 events. 904/6652 cut-off events. For 2340374/2340700 co-relation queries the response was YES. Maximal size of possible extension queue 123. Compared 60569 event pairs, 0 based on Foata normal form. 138/6081 useless extension candidates. Maximal degree in co-relation 68423. Up to 1090 conditions per place. [2022-12-11 18:55:46,745 INFO L137 encePairwiseOnDemand]: 59/66 looper letters, 168 selfloop transitions, 887 changer transitions 11/1108 dead transitions. [2022-12-11 18:55:46,745 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 736 places, 1108 transitions, 43738 flow [2022-12-11 18:55:46,745 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 93 states. [2022-12-11 18:55:46,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 93 states. [2022-12-11 18:55:46,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 4984 transitions. [2022-12-11 18:55:46,748 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.8119908765070055 [2022-12-11 18:55:46,748 INFO L175 Difference]: Start difference. First operand has 661 places, 927 transitions, 22388 flow. Second operand 93 states and 4984 transitions. [2022-12-11 18:55:46,748 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 736 places, 1108 transitions, 43738 flow [2022-12-11 18:55:51,320 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 697 places, 1108 transitions, 35326 flow, removed 3974 selfloop flow, removed 39 redundant places. [2022-12-11 18:55:51,339 INFO L231 Difference]: Finished difference. Result has 709 places, 987 transitions, 21436 flow [2022-12-11 18:55:51,339 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=66, PETRI_DIFFERENCE_MINUEND_FLOW=17808, PETRI_DIFFERENCE_MINUEND_PLACES=605, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=927, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=828, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=93, PETRI_DIFFERENCE_SUBTRAHEND_STATES=93, PETRI_FLOW=21436, PETRI_PLACES=709, PETRI_TRANSITIONS=987} [2022-12-11 18:55:51,340 INFO L295 CegarLoopForPetriNet]: 66 programPoint places, 643 predicate places. [2022-12-11 18:55:51,340 INFO L495 AbstractCegarLoop]: Abstraction has has 709 places, 987 transitions, 21436 flow [2022-12-11 18:55:51,341 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 88 states, 88 states have (on average 52.10227272727273) internal successors, (4585), 88 states have internal predecessors, (4585), 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) [2022-12-11 18:55:51,341 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-11 18:55:51,341 INFO L214 CegarLoopForPetriNet]: trace histogram [21, 21, 20, 20, 20, 20, 20, 19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-11 18:55:51,346 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2022-12-11 18:55:51,545 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-11 18:55:51,545 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-11 18:55:51,545 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-11 18:55:51,546 INFO L85 PathProgramCache]: Analyzing trace with hash 1096077069, now seen corresponding path program 12 times [2022-12-11 18:55:51,546 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-11 18:55:51,546 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1167512369] [2022-12-11 18:55:51,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-11 18:55:51,546 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-11 18:55:51,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-11 18:55:52,325 INFO L134 CoverageAnalysis]: Checked inductivity of 1883 backedges. 1759 proven. 115 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-12-11 18:55:52,326 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-11 18:55:52,326 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1167512369] [2022-12-11 18:55:52,326 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1167512369] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-11 18:55:52,326 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1134945799] [2022-12-11 18:55:52,326 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-12-11 18:55:52,326 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-11 18:55:52,326 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-11 18:55:52,327 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-11 18:55:52,328 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-12-11 18:55:52,430 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 21 check-sat command(s) [2022-12-11 18:55:52,431 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-11 18:55:52,432 INFO L263 TraceCheckSpWp]: Trace formula consists of 437 conjuncts, 42 conjunts are in the unsatisfiable core [2022-12-11 18:55:52,435 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-11 18:55:52,659 INFO L134 CoverageAnalysis]: Checked inductivity of 1883 backedges. 1874 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-12-11 18:55:52,660 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-11 18:55:52,660 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1134945799] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-11 18:55:52,660 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-11 18:55:52,660 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [43] imperfect sequences [43] total 45 [2022-12-11 18:55:52,660 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1907117642] [2022-12-11 18:55:52,660 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-11 18:55:52,660 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2022-12-11 18:55:52,660 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-11 18:55:52,661 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2022-12-11 18:55:52,661 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=489, Invalid=1491, Unknown=0, NotChecked=0, Total=1980 [2022-12-11 18:55:52,662 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 54 out of 66 [2022-12-11 18:55:52,664 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 709 places, 987 transitions, 21436 flow. Second operand has 43 states, 43 states have (on average 55.95348837209303) internal successors, (2406), 43 states have internal predecessors, (2406), 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) [2022-12-11 18:55:52,664 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-11 18:55:52,664 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 54 of 66 [2022-12-11 18:55:52,664 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-11 18:56:32,730 INFO L130 PetriNetUnfolder]: 14937/75067 cut-off events. [2022-12-11 18:56:32,731 INFO L131 PetriNetUnfolder]: For 20977292/20978300 co-relation queries the response was YES. [2022-12-11 18:56:35,722 INFO L83 FinitePrefix]: Finished finitePrefix Result has 699282 conditions, 75067 events. 14937/75067 cut-off events. For 20977292/20978300 co-relation queries the response was YES. Maximal size of possible extension queue 1293. Compared 1087016 event pairs, 4247 based on Foata normal form. 414/66583 useless extension candidates. Maximal degree in co-relation 699036. Up to 12306 conditions per place. [2022-12-11 18:56:35,805 INFO L137 encePairwiseOnDemand]: 60/66 looper letters, 0 selfloop transitions, 0 changer transitions 1132/1132 dead transitions. [2022-12-11 18:56:35,805 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 764 places, 1132 transitions, 21206 flow [2022-12-11 18:56:35,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2022-12-11 18:56:35,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states. [2022-12-11 18:56:35,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 3568 transitions. [2022-12-11 18:56:35,807 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.8581048581048581 [2022-12-11 18:56:35,807 INFO L175 Difference]: Start difference. First operand has 709 places, 987 transitions, 21436 flow. Second operand 63 states and 3568 transitions. [2022-12-11 18:56:35,808 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 764 places, 1132 transitions, 21206 flow [2022-12-11 18:57:21,952 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 694 places, 1132 transitions, 19202 flow, removed 240 selfloop flow, removed 70 redundant places. [2022-12-11 18:57:21,962 INFO L231 Difference]: Finished difference. Result has 694 places, 0 transitions, 0 flow [2022-12-11 18:57:21,963 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=66, PETRI_DIFFERENCE_MINUEND_FLOW=18436, PETRI_DIFFERENCE_MINUEND_PLACES=632, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=975, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=975, PETRI_DIFFERENCE_SUBTRAHEND_STATES=63, PETRI_FLOW=0, PETRI_PLACES=694, PETRI_TRANSITIONS=0} [2022-12-11 18:57:21,963 INFO L295 CegarLoopForPetriNet]: 66 programPoint places, 628 predicate places. [2022-12-11 18:57:21,963 INFO L495 AbstractCegarLoop]: Abstraction has has 694 places, 0 transitions, 0 flow [2022-12-11 18:57:21,964 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 43 states, 43 states have (on average 55.95348837209303) internal successors, (2406), 43 states have internal predecessors, (2406), 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) [2022-12-11 18:57:21,966 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining) [2022-12-11 18:57:21,966 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 3 remaining) [2022-12-11 18:57:21,966 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 3 remaining) [2022-12-11 18:57:21,971 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2022-12-11 18:57:22,166 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable19 [2022-12-11 18:57:22,167 INFO L445 BasicCegarLoop]: Path program histogram: [12, 3, 2, 1, 1, 1] [2022-12-11 18:57:22,169 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-12-11 18:57:22,170 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-12-11 18:57:22,173 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.12 06:57:22 BasicIcfg [2022-12-11 18:57:22,173 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-12-11 18:57:22,173 INFO L158 Benchmark]: Toolchain (without parser) took 141432.51ms. Allocated memory was 174.1MB in the beginning and 7.5GB in the end (delta: 7.3GB). Free memory was 147.8MB in the beginning and 3.5GB in the end (delta: -3.4GB). Peak memory consumption was 4.8GB. Max. memory is 8.0GB. [2022-12-11 18:57:22,173 INFO L158 Benchmark]: CDTParser took 0.17ms. Allocated memory is still 127.9MB. Free memory was 104.2MB in the beginning and 104.1MB in the end (delta: 76.2kB). There was no memory consumed. Max. memory is 8.0GB. [2022-12-11 18:57:22,173 INFO L158 Benchmark]: CACSL2BoogieTranslator took 335.61ms. Allocated memory is still 174.1MB. Free memory was 147.3MB in the beginning and 127.4MB in the end (delta: 19.9MB). Peak memory consumption was 19.9MB. Max. memory is 8.0GB. [2022-12-11 18:57:22,173 INFO L158 Benchmark]: Boogie Procedure Inliner took 27.37ms. Allocated memory is still 174.1MB. Free memory was 127.4MB in the beginning and 125.7MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-12-11 18:57:22,174 INFO L158 Benchmark]: Boogie Preprocessor took 19.05ms. Allocated memory is still 174.1MB. Free memory was 125.7MB in the beginning and 124.3MB in the end (delta: 1.4MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-12-11 18:57:22,174 INFO L158 Benchmark]: RCFGBuilder took 353.52ms. Allocated memory is still 174.1MB. Free memory was 124.1MB in the beginning and 111.7MB in the end (delta: 12.4MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. [2022-12-11 18:57:22,174 INFO L158 Benchmark]: TraceAbstraction took 140691.01ms. Allocated memory was 174.1MB in the beginning and 7.5GB in the end (delta: 7.3GB). Free memory was 110.6MB in the beginning and 3.5GB in the end (delta: -3.4GB). Peak memory consumption was 4.7GB. Max. memory is 8.0GB. [2022-12-11 18:57:22,175 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17ms. Allocated memory is still 127.9MB. Free memory was 104.2MB in the beginning and 104.1MB in the end (delta: 76.2kB). There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 335.61ms. Allocated memory is still 174.1MB. Free memory was 147.3MB in the beginning and 127.4MB in the end (delta: 19.9MB). Peak memory consumption was 19.9MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 27.37ms. Allocated memory is still 174.1MB. Free memory was 127.4MB in the beginning and 125.7MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 19.05ms. Allocated memory is still 174.1MB. Free memory was 125.7MB in the beginning and 124.3MB in the end (delta: 1.4MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 353.52ms. Allocated memory is still 174.1MB. Free memory was 124.1MB in the beginning and 111.7MB in the end (delta: 12.4MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. * TraceAbstraction took 140691.01ms. Allocated memory was 174.1MB in the beginning and 7.5GB in the end (delta: 7.3GB). Free memory was 110.6MB in the beginning and 3.5GB in the end (delta: -3.4GB). Peak memory consumption was 4.7GB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 722]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 84 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: 140.6s, OverallIterations: 20, TraceHistogramMax: 21, PathProgramHistogramMax: 12, EmptinessCheckTime: 0.0s, AutomataDifference: 124.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 3846 SdHoareTripleChecker+Valid, 2.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 3846 mSDsluCounter, 389 SdHoareTripleChecker+Invalid, 1.9s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 285 mSDsCounter, 797 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 4244 IncrementalHoareTripleChecker+Invalid, 5041 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 797 mSolverCounterUnsat, 104 mSDtfsCounter, 4244 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 3716 GetRequests, 2528 SyntacticMatches, 25 SemanticMatches, 1163 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36498 ImplicationChecksByTransitivity, 14.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=22388occurred in iteration=18, InterpolantAutomatonStates: 833, 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: 0.2s SsaConstructionTime, 0.6s SatisfiabilityAnalysisTime, 11.3s InterpolantComputationTime, 3220 NumberOfCodeBlocks, 3215 NumberOfCodeBlocksAsserted, 102 NumberOfCheckSat, 4420 ConstructedInterpolants, 0 QuantifiedInterpolants, 16965 SizeOfPredicates, 222 NumberOfNonLiveVariables, 3153 ConjunctsInSsa, 287 ConjunctsInUnsatCore, 45 InterpolantComputations, 8 PerfectInterpolantSequences, 3759/15619 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! [2022-12-11 18:57:22,185 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...