/usr/bin/java -Xmx16000000000 -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-wmm/safe027_pso.oepc_pso.opt_tso.oepc_tso.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-bf34d27 [2022-01-18 22:52:46,535 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-18 22:52:46,537 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-18 22:52:46,595 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-18 22:52:46,596 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-18 22:52:46,599 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-18 22:52:46,608 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-18 22:52:46,611 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-18 22:52:46,613 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-18 22:52:46,617 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-18 22:52:46,618 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-18 22:52:46,619 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-18 22:52:46,619 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-18 22:52:46,621 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-18 22:52:46,622 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-18 22:52:46,624 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-18 22:52:46,625 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-18 22:52:46,626 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-18 22:52:46,628 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-18 22:52:46,633 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-18 22:52:46,634 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-18 22:52:46,635 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-18 22:52:46,636 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-18 22:52:46,637 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-18 22:52:46,643 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-01-18 22:52:46,643 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-01-18 22:52:46,643 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-01-18 22:52:46,645 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-01-18 22:52:46,645 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-01-18 22:52:46,645 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-01-18 22:52:46,646 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-01-18 22:52:46,646 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-01-18 22:52:46,648 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-01-18 22:52:46,648 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-01-18 22:52:46,649 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-01-18 22:52:46,649 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-01-18 22:52:46,650 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-01-18 22:52:46,650 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-01-18 22:52:46,650 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-18 22:52:46,651 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-18 22:52:46,651 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-18 22:52:46,652 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 [2022-01-18 22:52:46,681 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-18 22:52:46,682 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-18 22:52:46,683 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-01-18 22:52:46,683 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-01-18 22:52:46,683 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-18 22:52:46,684 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-18 22:52:46,684 INFO L138 SettingsManager]: * Use SBE=true [2022-01-18 22:52:46,684 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-18 22:52:46,684 INFO L138 SettingsManager]: * sizeof long=4 [2022-01-18 22:52:46,685 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-18 22:52:46,685 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-01-18 22:52:46,685 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-18 22:52:46,686 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-18 22:52:46,686 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-18 22:52:46,686 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-18 22:52:46,686 INFO L138 SettingsManager]: * sizeof long double=12 [2022-01-18 22:52:46,686 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-18 22:52:46,686 INFO L138 SettingsManager]: * Use constant arrays=true [2022-01-18 22:52:46,686 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-18 22:52:46,687 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-18 22:52:46,687 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-18 22:52:46,687 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-01-18 22:52:46,687 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-18 22:52:46,687 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-18 22:52:46,687 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-18 22:52:46,688 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-18 22:52:46,688 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-18 22:52:46,689 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-18 22:52:46,689 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-18 22:52:46,689 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-18 22:52:46,689 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-18 22:52:46,689 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-01-18 22:52:46,930 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-18 22:52:46,953 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-18 22:52:46,955 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-18 22:52:46,956 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-18 22:52:46,956 INFO L275 PluginConnector]: CDTParser initialized [2022-01-18 22:52:46,957 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe027_pso.oepc_pso.opt_tso.oepc_tso.opt.i [2022-01-18 22:52:47,014 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e325183a8/cf7ae853bb7845a09d51810f8bbf7e36/FLAGd132be45a [2022-01-18 22:52:47,515 INFO L306 CDTParser]: Found 1 translation units. [2022-01-18 22:52:47,516 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe027_pso.oepc_pso.opt_tso.oepc_tso.opt.i [2022-01-18 22:52:47,537 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e325183a8/cf7ae853bb7845a09d51810f8bbf7e36/FLAGd132be45a [2022-01-18 22:52:47,842 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e325183a8/cf7ae853bb7845a09d51810f8bbf7e36 [2022-01-18 22:52:47,844 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-18 22:52:47,845 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-01-18 22:52:47,847 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-18 22:52:47,847 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-18 22:52:47,850 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-18 22:52:47,850 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.01 10:52:47" (1/1) ... [2022-01-18 22:52:47,851 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3672d839 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 10:52:47, skipping insertion in model container [2022-01-18 22:52:47,851 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.01 10:52:47" (1/1) ... [2022-01-18 22:52:47,856 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-18 22:52:47,893 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-18 22:52:48,064 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe027_pso.oepc_pso.opt_tso.oepc_tso.opt.i[975,988] [2022-01-18 22:52:48,198 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-18 22:52:48,205 INFO L203 MainTranslator]: Completed pre-run [2022-01-18 22:52:48,212 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe027_pso.oepc_pso.opt_tso.oepc_tso.opt.i[975,988] [2022-01-18 22:52:48,236 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-18 22:52:48,267 INFO L208 MainTranslator]: Completed translation [2022-01-18 22:52:48,268 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 10:52:48 WrapperNode [2022-01-18 22:52:48,268 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-18 22:52:48,269 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-18 22:52:48,269 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-18 22:52:48,269 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-18 22:52:48,275 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 10:52:48" (1/1) ... [2022-01-18 22:52:48,287 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 10:52:48" (1/1) ... [2022-01-18 22:52:48,302 INFO L137 Inliner]: procedures = 177, calls = 62, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 83 [2022-01-18 22:52:48,303 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-18 22:52:48,303 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-18 22:52:48,303 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-18 22:52:48,303 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-18 22:52:48,309 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 10:52:48" (1/1) ... [2022-01-18 22:52:48,309 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 10:52:48" (1/1) ... [2022-01-18 22:52:48,313 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 10:52:48" (1/1) ... [2022-01-18 22:52:48,313 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 10:52:48" (1/1) ... [2022-01-18 22:52:48,319 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 10:52:48" (1/1) ... [2022-01-18 22:52:48,321 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 10:52:48" (1/1) ... [2022-01-18 22:52:48,323 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 10:52:48" (1/1) ... [2022-01-18 22:52:48,326 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-18 22:52:48,326 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-18 22:52:48,326 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-18 22:52:48,327 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-18 22:52:48,327 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 10:52:48" (1/1) ... [2022-01-18 22:52:48,333 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-18 22:52:48,342 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 22:52:48,352 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) [2022-01-18 22:52:48,379 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 [2022-01-18 22:52:48,406 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-01-18 22:52:48,407 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-01-18 22:52:48,407 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-18 22:52:48,407 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-01-18 22:52:48,407 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-01-18 22:52:48,407 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2022-01-18 22:52:48,407 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2022-01-18 22:52:48,407 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2022-01-18 22:52:48,407 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2022-01-18 22:52:48,407 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2022-01-18 22:52:48,407 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2022-01-18 22:52:48,408 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2022-01-18 22:52:48,408 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2022-01-18 22:52:48,408 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-01-18 22:52:48,408 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-01-18 22:52:48,408 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-18 22:52:48,408 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-18 22:52:48,409 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-01-18 22:52:48,495 INFO L234 CfgBuilder]: Building ICFG [2022-01-18 22:52:48,497 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-18 22:52:48,726 INFO L275 CfgBuilder]: Performing block encoding [2022-01-18 22:52:48,733 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-18 22:52:48,733 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-01-18 22:52:48,735 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.01 10:52:48 BoogieIcfgContainer [2022-01-18 22:52:48,735 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-18 22:52:48,736 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-18 22:52:48,736 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-18 22:52:48,754 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-18 22:52:48,754 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.01 10:52:47" (1/3) ... [2022-01-18 22:52:48,755 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@34588472 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.01 10:52:48, skipping insertion in model container [2022-01-18 22:52:48,755 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 10:52:48" (2/3) ... [2022-01-18 22:52:48,755 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@34588472 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.01 10:52:48, skipping insertion in model container [2022-01-18 22:52:48,755 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.01 10:52:48" (3/3) ... [2022-01-18 22:52:48,756 INFO L111 eAbstractionObserver]: Analyzing ICFG safe027_pso.oepc_pso.opt_tso.oepc_tso.opt.i [2022-01-18 22:52:48,761 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-18 22:52:48,761 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-18 22:52:48,762 INFO L534 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-01-18 22:52:48,831 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 22:52:48,831 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 22:52:48,831 WARN L322 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 22:52:48,831 WARN L322 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 22:52:48,832 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 22:52:48,832 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 22:52:48,832 WARN L322 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 22:52:48,832 WARN L322 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 22:52:48,832 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 22:52:48,833 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 22:52:48,833 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 22:52:48,833 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 22:52:48,834 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 22:52:48,834 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 22:52:48,834 WARN L322 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 22:52:48,834 WARN L322 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 22:52:48,834 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 22:52:48,834 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 22:52:48,834 WARN L322 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 22:52:48,834 WARN L322 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 22:52:48,835 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 22:52:48,835 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 22:52:48,835 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 22:52:48,835 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 22:52:48,835 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork3_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 22:52:48,836 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork3_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 22:52:48,836 WARN L322 ript$VariableManager]: TermVariabe P2Thread1of1ForFork3_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 22:52:48,836 WARN L322 ript$VariableManager]: TermVariabe P2Thread1of1ForFork3_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 22:52:48,836 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork3_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 22:52:48,836 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork3_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 22:52:48,836 WARN L322 ript$VariableManager]: TermVariabe P2Thread1of1ForFork3_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 22:52:48,836 WARN L322 ript$VariableManager]: TermVariabe P2Thread1of1ForFork3_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 22:52:48,837 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 22:52:48,837 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 22:52:48,837 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 22:52:48,837 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 22:52:48,837 WARN L322 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 22:52:48,838 WARN L322 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 22:52:48,838 WARN L322 ript$VariableManager]: TermVariabe P3Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 22:52:48,838 WARN L322 ript$VariableManager]: TermVariabe P3Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 22:52:48,838 WARN L322 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 22:52:48,838 WARN L322 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 22:52:48,838 WARN L322 ript$VariableManager]: TermVariabe P3Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 22:52:48,838 WARN L322 ript$VariableManager]: TermVariabe P3Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 22:52:48,839 WARN L322 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 22:52:48,839 WARN L322 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 22:52:48,839 WARN L322 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 22:52:48,839 WARN L322 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 22:52:48,850 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 22:52:48,850 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 22:52:48,851 WARN L322 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 22:52:48,851 WARN L322 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 22:52:48,854 WARN L322 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 22:52:48,854 WARN L322 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 22:52:48,854 WARN L322 ript$VariableManager]: TermVariabe P3Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 22:52:48,855 WARN L322 ript$VariableManager]: TermVariabe P3Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 22:52:48,855 WARN L322 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 22:52:48,855 WARN L322 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 22:52:48,856 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 22:52:48,856 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 22:52:48,856 WARN L322 ript$VariableManager]: TermVariabe P2Thread1of1ForFork3_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 22:52:48,857 WARN L322 ript$VariableManager]: TermVariabe P2Thread1of1ForFork3_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 22:52:48,857 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 22:52:48,857 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 22:52:48,857 INFO L148 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-01-18 22:52:48,915 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-18 22:52:48,926 INFO L339 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, mLoopAccelerationTechnique=FAST_UPR [2022-01-18 22:52:48,926 INFO L340 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2022-01-18 22:52:48,941 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 118 places, 107 transitions, 234 flow [2022-01-18 22:52:49,010 INFO L129 PetriNetUnfolder]: 2/103 cut-off events. [2022-01-18 22:52:49,011 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-01-18 22:52:49,014 INFO L84 FinitePrefix]: Finished finitePrefix Result has 116 conditions, 103 events. 2/103 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 51 event pairs, 0 based on Foata normal form. 0/100 useless extension candidates. Maximal degree in co-relation 83. Up to 2 conditions per place. [2022-01-18 22:52:49,014 INFO L82 GeneralOperation]: Start removeDead. Operand has 118 places, 107 transitions, 234 flow [2022-01-18 22:52:49,019 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 99 places, 87 transitions, 186 flow [2022-01-18 22:52:49,048 INFO L129 PetriNetUnfolder]: 1/86 cut-off events. [2022-01-18 22:52:49,048 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-01-18 22:52:49,048 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-18 22:52:49,049 INFO L254 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 22:52:49,050 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-01-18 22:52:49,054 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 22:52:49,054 INFO L85 PathProgramCache]: Analyzing trace with hash 915847760, now seen corresponding path program 1 times [2022-01-18 22:52:49,062 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 22:52:49,062 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [155712172] [2022-01-18 22:52:49,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 22:52:49,063 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 22:52:49,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 22:52:49,567 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 22:52:49,568 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 22:52:49,569 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [155712172] [2022-01-18 22:52:49,570 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [155712172] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 22:52:49,573 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 22:52:49,578 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-18 22:52:49,579 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1341076547] [2022-01-18 22:52:49,580 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 22:52:49,588 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-18 22:52:49,588 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 22:52:49,615 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-18 22:52:49,619 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-01-18 22:52:49,626 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 85 out of 107 [2022-01-18 22:52:49,631 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 87 transitions, 186 flow. Second operand has 7 states, 7 states have (on average 87.0) internal successors, (609), 7 states have internal predecessors, (609), 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) [2022-01-18 22:52:49,632 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-18 22:52:49,632 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 85 of 107 [2022-01-18 22:52:49,633 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-18 22:52:49,876 INFO L129 PetriNetUnfolder]: 97/321 cut-off events. [2022-01-18 22:52:49,876 INFO L130 PetriNetUnfolder]: For 16/16 co-relation queries the response was YES. [2022-01-18 22:52:49,878 INFO L84 FinitePrefix]: Finished finitePrefix Result has 551 conditions, 321 events. 97/321 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1219 event pairs, 21 based on Foata normal form. 11/310 useless extension candidates. Maximal degree in co-relation 511. Up to 93 conditions per place. [2022-01-18 22:52:49,881 INFO L132 encePairwiseOnDemand]: 98/107 looper letters, 17 selfloop transitions, 4 changer transitions 25/114 dead transitions. [2022-01-18 22:52:49,881 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 114 transitions, 335 flow [2022-01-18 22:52:49,883 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-01-18 22:52:49,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-01-18 22:52:49,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 900 transitions. [2022-01-18 22:52:49,896 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8411214953271028 [2022-01-18 22:52:49,897 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 900 transitions. [2022-01-18 22:52:49,897 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 900 transitions. [2022-01-18 22:52:49,900 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-18 22:52:49,902 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 900 transitions. [2022-01-18 22:52:49,908 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 90.0) internal successors, (900), 10 states have internal predecessors, (900), 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) [2022-01-18 22:52:49,915 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 107.0) internal successors, (1177), 11 states have internal predecessors, (1177), 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) [2022-01-18 22:52:49,916 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 107.0) internal successors, (1177), 11 states have internal predecessors, (1177), 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) [2022-01-18 22:52:49,918 INFO L186 Difference]: Start difference. First operand has 99 places, 87 transitions, 186 flow. Second operand 10 states and 900 transitions. [2022-01-18 22:52:49,919 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 108 places, 114 transitions, 335 flow [2022-01-18 22:52:49,921 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 104 places, 114 transitions, 330 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-01-18 22:52:49,924 INFO L242 Difference]: Finished difference. Result has 111 places, 86 transitions, 204 flow [2022-01-18 22:52:49,926 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=107, PETRI_DIFFERENCE_MINUEND_FLOW=180, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=86, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=204, PETRI_PLACES=111, PETRI_TRANSITIONS=86} [2022-01-18 22:52:49,929 INFO L334 CegarLoopForPetriNet]: 99 programPoint places, 12 predicate places. [2022-01-18 22:52:49,929 INFO L470 AbstractCegarLoop]: Abstraction has has 111 places, 86 transitions, 204 flow [2022-01-18 22:52:49,930 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 87.0) internal successors, (609), 7 states have internal predecessors, (609), 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) [2022-01-18 22:52:49,930 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-18 22:52:49,930 INFO L254 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 22:52:49,930 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-18 22:52:49,930 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-01-18 22:52:49,931 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 22:52:49,931 INFO L85 PathProgramCache]: Analyzing trace with hash -1477336817, now seen corresponding path program 1 times [2022-01-18 22:52:49,931 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 22:52:49,931 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2104128904] [2022-01-18 22:52:49,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 22:52:49,932 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 22:52:49,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 22:52:50,074 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 22:52:50,074 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 22:52:50,074 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2104128904] [2022-01-18 22:52:50,074 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2104128904] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 22:52:50,075 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 22:52:50,075 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-18 22:52:50,075 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [304745009] [2022-01-18 22:52:50,075 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 22:52:50,076 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-18 22:52:50,076 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 22:52:50,077 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-18 22:52:50,077 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-01-18 22:52:50,078 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 85 out of 107 [2022-01-18 22:52:50,079 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 111 places, 86 transitions, 204 flow. Second operand has 7 states, 7 states have (on average 87.14285714285714) internal successors, (610), 7 states have internal predecessors, (610), 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) [2022-01-18 22:52:50,080 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-18 22:52:50,080 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 85 of 107 [2022-01-18 22:52:50,080 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-18 22:52:50,257 INFO L129 PetriNetUnfolder]: 64/289 cut-off events. [2022-01-18 22:52:50,257 INFO L130 PetriNetUnfolder]: For 63/72 co-relation queries the response was YES. [2022-01-18 22:52:50,259 INFO L84 FinitePrefix]: Finished finitePrefix Result has 537 conditions, 289 events. 64/289 cut-off events. For 63/72 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 1024 event pairs, 33 based on Foata normal form. 6/277 useless extension candidates. Maximal degree in co-relation 499. Up to 75 conditions per place. [2022-01-18 22:52:50,260 INFO L132 encePairwiseOnDemand]: 101/107 looper letters, 21 selfloop transitions, 2 changer transitions 19/110 dead transitions. [2022-01-18 22:52:50,260 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 113 places, 110 transitions, 363 flow [2022-01-18 22:52:50,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-18 22:52:50,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-01-18 22:52:50,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 809 transitions. [2022-01-18 22:52:50,263 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8400830737279336 [2022-01-18 22:52:50,263 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 809 transitions. [2022-01-18 22:52:50,263 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 809 transitions. [2022-01-18 22:52:50,264 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-18 22:52:50,264 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 809 transitions. [2022-01-18 22:52:50,266 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 89.88888888888889) internal successors, (809), 9 states have internal predecessors, (809), 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) [2022-01-18 22:52:50,268 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 107.0) internal successors, (1070), 10 states have internal predecessors, (1070), 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) [2022-01-18 22:52:50,268 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 107.0) internal successors, (1070), 10 states have internal predecessors, (1070), 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) [2022-01-18 22:52:50,268 INFO L186 Difference]: Start difference. First operand has 111 places, 86 transitions, 204 flow. Second operand 9 states and 809 transitions. [2022-01-18 22:52:50,269 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 113 places, 110 transitions, 363 flow [2022-01-18 22:52:50,271 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 104 places, 110 transitions, 325 flow, removed 14 selfloop flow, removed 9 redundant places. [2022-01-18 22:52:50,273 INFO L242 Difference]: Finished difference. Result has 111 places, 86 transitions, 204 flow [2022-01-18 22:52:50,273 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=107, PETRI_DIFFERENCE_MINUEND_FLOW=184, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=86, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=84, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=204, PETRI_PLACES=111, PETRI_TRANSITIONS=86} [2022-01-18 22:52:50,274 INFO L334 CegarLoopForPetriNet]: 99 programPoint places, 12 predicate places. [2022-01-18 22:52:50,274 INFO L470 AbstractCegarLoop]: Abstraction has has 111 places, 86 transitions, 204 flow [2022-01-18 22:52:50,274 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 87.14285714285714) internal successors, (610), 7 states have internal predecessors, (610), 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) [2022-01-18 22:52:50,274 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-18 22:52:50,275 INFO L254 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 22:52:50,275 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-18 22:52:50,275 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-01-18 22:52:50,275 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 22:52:50,275 INFO L85 PathProgramCache]: Analyzing trace with hash 898502224, now seen corresponding path program 1 times [2022-01-18 22:52:50,276 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 22:52:50,276 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1570521062] [2022-01-18 22:52:50,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 22:52:50,276 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 22:52:50,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 22:52:50,404 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 22:52:50,404 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 22:52:50,405 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1570521062] [2022-01-18 22:52:50,405 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1570521062] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 22:52:50,405 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 22:52:50,405 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-18 22:52:50,405 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1064557023] [2022-01-18 22:52:50,405 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 22:52:50,406 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-18 22:52:50,406 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 22:52:50,406 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-18 22:52:50,407 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-01-18 22:52:50,408 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 107 [2022-01-18 22:52:50,409 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 111 places, 86 transitions, 204 flow. Second operand has 8 states, 8 states have (on average 85.125) internal successors, (681), 8 states have internal predecessors, (681), 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) [2022-01-18 22:52:50,409 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-18 22:52:50,409 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 107 [2022-01-18 22:52:50,409 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-18 22:52:50,598 INFO L129 PetriNetUnfolder]: 101/348 cut-off events. [2022-01-18 22:52:50,598 INFO L130 PetriNetUnfolder]: For 114/222 co-relation queries the response was YES. [2022-01-18 22:52:50,601 INFO L84 FinitePrefix]: Finished finitePrefix Result has 703 conditions, 348 events. 101/348 cut-off events. For 114/222 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 1342 event pairs, 30 based on Foata normal form. 8/332 useless extension candidates. Maximal degree in co-relation 664. Up to 51 conditions per place. [2022-01-18 22:52:50,602 INFO L132 encePairwiseOnDemand]: 99/107 looper letters, 20 selfloop transitions, 4 changer transitions 26/116 dead transitions. [2022-01-18 22:52:50,602 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 114 places, 116 transitions, 393 flow [2022-01-18 22:52:50,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-01-18 22:52:50,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-01-18 22:52:50,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 882 transitions. [2022-01-18 22:52:50,605 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8242990654205608 [2022-01-18 22:52:50,606 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 882 transitions. [2022-01-18 22:52:50,609 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 882 transitions. [2022-01-18 22:52:50,610 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-18 22:52:50,610 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 882 transitions. [2022-01-18 22:52:50,613 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 88.2) internal successors, (882), 10 states have internal predecessors, (882), 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) [2022-01-18 22:52:50,615 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 107.0) internal successors, (1177), 11 states have internal predecessors, (1177), 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) [2022-01-18 22:52:50,616 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 107.0) internal successors, (1177), 11 states have internal predecessors, (1177), 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) [2022-01-18 22:52:50,616 INFO L186 Difference]: Start difference. First operand has 111 places, 86 transitions, 204 flow. Second operand 10 states and 882 transitions. [2022-01-18 22:52:50,616 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 114 places, 116 transitions, 393 flow [2022-01-18 22:52:50,620 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 106 places, 116 transitions, 359 flow, removed 14 selfloop flow, removed 8 redundant places. [2022-01-18 22:52:50,624 INFO L242 Difference]: Finished difference. Result has 114 places, 86 transitions, 218 flow [2022-01-18 22:52:50,625 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=107, PETRI_DIFFERENCE_MINUEND_FLOW=188, PETRI_DIFFERENCE_MINUEND_PLACES=97, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=86, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=218, PETRI_PLACES=114, PETRI_TRANSITIONS=86} [2022-01-18 22:52:50,627 INFO L334 CegarLoopForPetriNet]: 99 programPoint places, 15 predicate places. [2022-01-18 22:52:50,627 INFO L470 AbstractCegarLoop]: Abstraction has has 114 places, 86 transitions, 218 flow [2022-01-18 22:52:50,627 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 85.125) internal successors, (681), 8 states have internal predecessors, (681), 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) [2022-01-18 22:52:50,627 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-18 22:52:50,628 INFO L254 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 22:52:50,628 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-01-18 22:52:50,628 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-01-18 22:52:50,629 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 22:52:50,629 INFO L85 PathProgramCache]: Analyzing trace with hash -895468465, now seen corresponding path program 1 times [2022-01-18 22:52:50,629 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 22:52:50,629 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1557175736] [2022-01-18 22:52:50,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 22:52:50,629 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 22:52:50,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 22:52:50,783 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 22:52:50,784 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 22:52:50,784 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1557175736] [2022-01-18 22:52:50,784 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1557175736] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 22:52:50,784 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 22:52:50,785 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-18 22:52:50,785 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1366168886] [2022-01-18 22:52:50,785 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 22:52:50,786 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-18 22:52:50,787 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 22:52:50,787 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-18 22:52:50,790 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-01-18 22:52:50,791 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 88 out of 107 [2022-01-18 22:52:50,792 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 114 places, 86 transitions, 218 flow. Second operand has 7 states, 7 states have (on average 89.85714285714286) internal successors, (629), 7 states have internal predecessors, (629), 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) [2022-01-18 22:52:50,792 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-18 22:52:50,792 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 88 of 107 [2022-01-18 22:52:50,792 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-18 22:52:50,965 INFO L129 PetriNetUnfolder]: 30/222 cut-off events. [2022-01-18 22:52:50,965 INFO L130 PetriNetUnfolder]: For 110/128 co-relation queries the response was YES. [2022-01-18 22:52:50,966 INFO L84 FinitePrefix]: Finished finitePrefix Result has 406 conditions, 222 events. 30/222 cut-off events. For 110/128 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 754 event pairs, 2 based on Foata normal form. 5/219 useless extension candidates. Maximal degree in co-relation 381. Up to 21 conditions per place. [2022-01-18 22:52:50,967 INFO L132 encePairwiseOnDemand]: 99/107 looper letters, 16 selfloop transitions, 4 changer transitions 18/109 dead transitions. [2022-01-18 22:52:50,967 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 117 places, 109 transitions, 379 flow [2022-01-18 22:52:50,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-01-18 22:52:50,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-01-18 22:52:50,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 920 transitions. [2022-01-18 22:52:51,000 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8598130841121495 [2022-01-18 22:52:51,000 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 920 transitions. [2022-01-18 22:52:51,000 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 920 transitions. [2022-01-18 22:52:51,001 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-18 22:52:51,001 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 920 transitions. [2022-01-18 22:52:51,003 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 92.0) internal successors, (920), 10 states have internal predecessors, (920), 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) [2022-01-18 22:52:51,004 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 107.0) internal successors, (1177), 11 states have internal predecessors, (1177), 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) [2022-01-18 22:52:51,005 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 107.0) internal successors, (1177), 11 states have internal predecessors, (1177), 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) [2022-01-18 22:52:51,005 INFO L186 Difference]: Start difference. First operand has 114 places, 86 transitions, 218 flow. Second operand 10 states and 920 transitions. [2022-01-18 22:52:51,005 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 117 places, 109 transitions, 379 flow [2022-01-18 22:52:51,007 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 107 places, 109 transitions, 329 flow, removed 20 selfloop flow, removed 10 redundant places. [2022-01-18 22:52:51,008 INFO L242 Difference]: Finished difference. Result has 115 places, 86 transitions, 222 flow [2022-01-18 22:52:51,008 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=107, PETRI_DIFFERENCE_MINUEND_FLOW=192, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=86, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=222, PETRI_PLACES=115, PETRI_TRANSITIONS=86} [2022-01-18 22:52:51,009 INFO L334 CegarLoopForPetriNet]: 99 programPoint places, 16 predicate places. [2022-01-18 22:52:51,009 INFO L470 AbstractCegarLoop]: Abstraction has has 115 places, 86 transitions, 222 flow [2022-01-18 22:52:51,009 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 89.85714285714286) internal successors, (629), 7 states have internal predecessors, (629), 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) [2022-01-18 22:52:51,009 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-18 22:52:51,010 INFO L254 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 22:52:51,010 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-01-18 22:52:51,010 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-01-18 22:52:51,010 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 22:52:51,010 INFO L85 PathProgramCache]: Analyzing trace with hash 925818260, now seen corresponding path program 1 times [2022-01-18 22:52:51,010 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 22:52:51,011 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [650781004] [2022-01-18 22:52:51,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 22:52:51,011 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 22:52:51,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 22:52:51,127 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 22:52:51,127 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 22:52:51,127 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [650781004] [2022-01-18 22:52:51,127 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [650781004] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 22:52:51,127 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 22:52:51,128 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-18 22:52:51,128 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [964807326] [2022-01-18 22:52:51,128 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 22:52:51,128 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-18 22:52:51,128 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 22:52:51,128 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-18 22:52:51,129 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-01-18 22:52:51,129 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 88 out of 107 [2022-01-18 22:52:51,130 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 115 places, 86 transitions, 222 flow. Second operand has 6 states, 6 states have (on average 89.83333333333333) internal successors, (539), 6 states have internal predecessors, (539), 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) [2022-01-18 22:52:51,130 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-18 22:52:51,130 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 88 of 107 [2022-01-18 22:52:51,130 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-18 22:52:51,294 INFO L129 PetriNetUnfolder]: 335/806 cut-off events. [2022-01-18 22:52:51,295 INFO L130 PetriNetUnfolder]: For 140/143 co-relation queries the response was YES. [2022-01-18 22:52:51,298 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1533 conditions, 806 events. 335/806 cut-off events. For 140/143 co-relation queries the response was YES. Maximal size of possible extension queue 85. Compared 4843 event pairs, 13 based on Foata normal form. 0/786 useless extension candidates. Maximal degree in co-relation 1485. Up to 216 conditions per place. [2022-01-18 22:52:51,301 INFO L132 encePairwiseOnDemand]: 96/107 looper letters, 18 selfloop transitions, 7 changer transitions 30/125 dead transitions. [2022-01-18 22:52:51,301 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 118 places, 125 transitions, 414 flow [2022-01-18 22:52:51,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-01-18 22:52:51,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-01-18 22:52:51,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 937 transitions. [2022-01-18 22:52:51,304 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8757009345794392 [2022-01-18 22:52:51,304 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 937 transitions. [2022-01-18 22:52:51,304 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 937 transitions. [2022-01-18 22:52:51,304 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-18 22:52:51,305 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 937 transitions. [2022-01-18 22:52:51,306 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 93.7) internal successors, (937), 10 states have internal predecessors, (937), 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) [2022-01-18 22:52:51,308 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 107.0) internal successors, (1177), 11 states have internal predecessors, (1177), 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) [2022-01-18 22:52:51,309 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 107.0) internal successors, (1177), 11 states have internal predecessors, (1177), 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) [2022-01-18 22:52:51,309 INFO L186 Difference]: Start difference. First operand has 115 places, 86 transitions, 222 flow. Second operand 10 states and 937 transitions. [2022-01-18 22:52:51,309 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 118 places, 125 transitions, 414 flow [2022-01-18 22:52:51,313 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 108 places, 125 transitions, 388 flow, removed 8 selfloop flow, removed 10 redundant places. [2022-01-18 22:52:51,316 INFO L242 Difference]: Finished difference. Result has 114 places, 89 transitions, 262 flow [2022-01-18 22:52:51,317 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=107, PETRI_DIFFERENCE_MINUEND_FLOW=196, PETRI_DIFFERENCE_MINUEND_PLACES=99, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=86, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=262, PETRI_PLACES=114, PETRI_TRANSITIONS=89} [2022-01-18 22:52:51,319 INFO L334 CegarLoopForPetriNet]: 99 programPoint places, 15 predicate places. [2022-01-18 22:52:51,319 INFO L470 AbstractCegarLoop]: Abstraction has has 114 places, 89 transitions, 262 flow [2022-01-18 22:52:51,319 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 89.83333333333333) internal successors, (539), 6 states have internal predecessors, (539), 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) [2022-01-18 22:52:51,320 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-18 22:52:51,320 INFO L254 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 22:52:51,320 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-01-18 22:52:51,320 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-01-18 22:52:51,321 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 22:52:51,321 INFO L85 PathProgramCache]: Analyzing trace with hash 2084729738, now seen corresponding path program 1 times [2022-01-18 22:52:51,321 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 22:52:51,321 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [91571203] [2022-01-18 22:52:51,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 22:52:51,321 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 22:52:51,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 22:52:51,437 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 22:52:51,437 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 22:52:51,438 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [91571203] [2022-01-18 22:52:51,438 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [91571203] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 22:52:51,438 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 22:52:51,438 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-18 22:52:51,438 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2133285929] [2022-01-18 22:52:51,438 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 22:52:51,439 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-18 22:52:51,439 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 22:52:51,440 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-18 22:52:51,440 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-01-18 22:52:51,441 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 88 out of 107 [2022-01-18 22:52:51,441 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 114 places, 89 transitions, 262 flow. Second operand has 7 states, 7 states have (on average 89.71428571428571) internal successors, (628), 7 states have internal predecessors, (628), 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) [2022-01-18 22:52:51,442 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-18 22:52:51,442 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 88 of 107 [2022-01-18 22:52:51,442 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-18 22:52:51,625 INFO L129 PetriNetUnfolder]: 203/574 cut-off events. [2022-01-18 22:52:51,625 INFO L130 PetriNetUnfolder]: For 985/1020 co-relation queries the response was YES. [2022-01-18 22:52:51,627 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1815 conditions, 574 events. 203/574 cut-off events. For 985/1020 co-relation queries the response was YES. Maximal size of possible extension queue 55. Compared 3080 event pairs, 2 based on Foata normal form. 17/588 useless extension candidates. Maximal degree in co-relation 1769. Up to 256 conditions per place. [2022-01-18 22:52:51,630 INFO L132 encePairwiseOnDemand]: 97/107 looper letters, 19 selfloop transitions, 11 changer transitions 23/123 dead transitions. [2022-01-18 22:52:51,630 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 117 places, 123 transitions, 605 flow [2022-01-18 22:52:51,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-01-18 22:52:51,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-01-18 22:52:51,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 935 transitions. [2022-01-18 22:52:51,633 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8738317757009346 [2022-01-18 22:52:51,633 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 935 transitions. [2022-01-18 22:52:51,633 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 935 transitions. [2022-01-18 22:52:51,634 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-18 22:52:51,634 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 935 transitions. [2022-01-18 22:52:51,637 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 93.5) internal successors, (935), 10 states have internal predecessors, (935), 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) [2022-01-18 22:52:51,639 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 107.0) internal successors, (1177), 11 states have internal predecessors, (1177), 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) [2022-01-18 22:52:51,639 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 107.0) internal successors, (1177), 11 states have internal predecessors, (1177), 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) [2022-01-18 22:52:51,640 INFO L186 Difference]: Start difference. First operand has 114 places, 89 transitions, 262 flow. Second operand 10 states and 935 transitions. [2022-01-18 22:52:51,640 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 117 places, 123 transitions, 605 flow [2022-01-18 22:52:51,642 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 112 places, 123 transitions, 580 flow, removed 7 selfloop flow, removed 5 redundant places. [2022-01-18 22:52:51,644 INFO L242 Difference]: Finished difference. Result has 118 places, 93 transitions, 350 flow [2022-01-18 22:52:51,644 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=107, PETRI_DIFFERENCE_MINUEND_FLOW=247, PETRI_DIFFERENCE_MINUEND_PLACES=103, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=89, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=350, PETRI_PLACES=118, PETRI_TRANSITIONS=93} [2022-01-18 22:52:51,646 INFO L334 CegarLoopForPetriNet]: 99 programPoint places, 19 predicate places. [2022-01-18 22:52:51,646 INFO L470 AbstractCegarLoop]: Abstraction has has 118 places, 93 transitions, 350 flow [2022-01-18 22:52:51,647 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 89.71428571428571) internal successors, (628), 7 states have internal predecessors, (628), 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) [2022-01-18 22:52:51,647 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-18 22:52:51,647 INFO L254 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 22:52:51,647 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-01-18 22:52:51,647 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-01-18 22:52:51,648 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 22:52:51,648 INFO L85 PathProgramCache]: Analyzing trace with hash -326737363, now seen corresponding path program 1 times [2022-01-18 22:52:51,648 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 22:52:51,648 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1868622617] [2022-01-18 22:52:51,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 22:52:51,649 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 22:52:51,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 22:52:51,761 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 22:52:51,761 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 22:52:51,761 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1868622617] [2022-01-18 22:52:51,761 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1868622617] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 22:52:51,761 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 22:52:51,762 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-18 22:52:51,762 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1466688771] [2022-01-18 22:52:51,765 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 22:52:51,766 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-18 22:52:51,766 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 22:52:51,766 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-18 22:52:51,767 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-01-18 22:52:51,768 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 88 out of 107 [2022-01-18 22:52:51,769 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 118 places, 93 transitions, 350 flow. Second operand has 8 states, 8 states have (on average 89.625) internal successors, (717), 8 states have internal predecessors, (717), 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) [2022-01-18 22:52:51,769 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-18 22:52:51,769 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 88 of 107 [2022-01-18 22:52:51,769 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-18 22:52:51,937 INFO L129 PetriNetUnfolder]: 101/362 cut-off events. [2022-01-18 22:52:51,937 INFO L130 PetriNetUnfolder]: For 1754/1822 co-relation queries the response was YES. [2022-01-18 22:52:51,939 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1435 conditions, 362 events. 101/362 cut-off events. For 1754/1822 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 1577 event pairs, 0 based on Foata normal form. 19/380 useless extension candidates. Maximal degree in co-relation 1385. Up to 138 conditions per place. [2022-01-18 22:52:51,940 INFO L132 encePairwiseOnDemand]: 97/107 looper letters, 19 selfloop transitions, 15 changer transitions 23/127 dead transitions. [2022-01-18 22:52:51,940 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 124 places, 127 transitions, 854 flow [2022-01-18 22:52:51,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-01-18 22:52:51,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-01-18 22:52:51,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1027 transitions. [2022-01-18 22:52:51,943 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8725573491928632 [2022-01-18 22:52:51,943 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1027 transitions. [2022-01-18 22:52:51,944 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1027 transitions. [2022-01-18 22:52:51,944 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-18 22:52:51,944 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1027 transitions. [2022-01-18 22:52:51,946 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 93.36363636363636) internal successors, (1027), 11 states have internal predecessors, (1027), 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) [2022-01-18 22:52:51,948 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 107.0) internal successors, (1284), 12 states have internal predecessors, (1284), 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) [2022-01-18 22:52:51,949 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 107.0) internal successors, (1284), 12 states have internal predecessors, (1284), 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) [2022-01-18 22:52:51,949 INFO L186 Difference]: Start difference. First operand has 118 places, 93 transitions, 350 flow. Second operand 11 states and 1027 transitions. [2022-01-18 22:52:51,949 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 124 places, 127 transitions, 854 flow [2022-01-18 22:52:51,953 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 115 places, 127 transitions, 674 flow, removed 79 selfloop flow, removed 9 redundant places. [2022-01-18 22:52:51,955 INFO L242 Difference]: Finished difference. Result has 121 places, 97 transitions, 400 flow [2022-01-18 22:52:51,955 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=107, PETRI_DIFFERENCE_MINUEND_FLOW=281, PETRI_DIFFERENCE_MINUEND_PLACES=105, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=93, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=400, PETRI_PLACES=121, PETRI_TRANSITIONS=97} [2022-01-18 22:52:51,956 INFO L334 CegarLoopForPetriNet]: 99 programPoint places, 22 predicate places. [2022-01-18 22:52:51,956 INFO L470 AbstractCegarLoop]: Abstraction has has 121 places, 97 transitions, 400 flow [2022-01-18 22:52:51,956 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 89.625) internal successors, (717), 8 states have internal predecessors, (717), 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) [2022-01-18 22:52:51,957 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-18 22:52:51,957 INFO L254 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 22:52:51,957 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-01-18 22:52:51,957 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-01-18 22:52:51,958 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 22:52:51,958 INFO L85 PathProgramCache]: Analyzing trace with hash 472979402, now seen corresponding path program 1 times [2022-01-18 22:52:51,958 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 22:52:51,958 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [752739974] [2022-01-18 22:52:51,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 22:52:51,958 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 22:52:51,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 22:52:52,073 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 22:52:52,073 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 22:52:52,073 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [752739974] [2022-01-18 22:52:52,073 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [752739974] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 22:52:52,073 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 22:52:52,074 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-01-18 22:52:52,074 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1275704029] [2022-01-18 22:52:52,074 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 22:52:52,074 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-01-18 22:52:52,074 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 22:52:52,075 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-01-18 22:52:52,075 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2022-01-18 22:52:52,076 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 88 out of 107 [2022-01-18 22:52:52,077 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 121 places, 97 transitions, 400 flow. Second operand has 9 states, 9 states have (on average 89.55555555555556) internal successors, (806), 9 states have internal predecessors, (806), 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) [2022-01-18 22:52:52,077 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-18 22:52:52,077 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 88 of 107 [2022-01-18 22:52:52,077 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-18 22:52:52,265 INFO L129 PetriNetUnfolder]: 37/208 cut-off events. [2022-01-18 22:52:52,265 INFO L130 PetriNetUnfolder]: For 804/826 co-relation queries the response was YES. [2022-01-18 22:52:52,266 INFO L84 FinitePrefix]: Finished finitePrefix Result has 672 conditions, 208 events. 37/208 cut-off events. For 804/826 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 650 event pairs, 0 based on Foata normal form. 17/224 useless extension candidates. Maximal degree in co-relation 642. Up to 53 conditions per place. [2022-01-18 22:52:52,267 INFO L132 encePairwiseOnDemand]: 97/107 looper letters, 11 selfloop transitions, 19 changer transitions 15/115 dead transitions. [2022-01-18 22:52:52,267 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 128 places, 115 transitions, 676 flow [2022-01-18 22:52:52,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-01-18 22:52:52,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2022-01-18 22:52:52,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1103 transitions. [2022-01-18 22:52:52,270 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8590342679127726 [2022-01-18 22:52:52,270 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 1103 transitions. [2022-01-18 22:52:52,270 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 1103 transitions. [2022-01-18 22:52:52,271 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-18 22:52:52,271 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 1103 transitions. [2022-01-18 22:52:52,274 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 91.91666666666667) internal successors, (1103), 12 states have internal predecessors, (1103), 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) [2022-01-18 22:52:52,276 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 107.0) internal successors, (1391), 13 states have internal predecessors, (1391), 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) [2022-01-18 22:52:52,276 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 107.0) internal successors, (1391), 13 states have internal predecessors, (1391), 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) [2022-01-18 22:52:52,276 INFO L186 Difference]: Start difference. First operand has 121 places, 97 transitions, 400 flow. Second operand 12 states and 1103 transitions. [2022-01-18 22:52:52,276 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 128 places, 115 transitions, 676 flow [2022-01-18 22:52:52,279 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 116 places, 115 transitions, 536 flow, removed 53 selfloop flow, removed 12 redundant places. [2022-01-18 22:52:52,281 INFO L242 Difference]: Finished difference. Result has 122 places, 97 transitions, 370 flow [2022-01-18 22:52:52,281 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=107, PETRI_DIFFERENCE_MINUEND_FLOW=307, PETRI_DIFFERENCE_MINUEND_PLACES=105, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=97, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=370, PETRI_PLACES=122, PETRI_TRANSITIONS=97} [2022-01-18 22:52:52,283 INFO L334 CegarLoopForPetriNet]: 99 programPoint places, 23 predicate places. [2022-01-18 22:52:52,283 INFO L470 AbstractCegarLoop]: Abstraction has has 122 places, 97 transitions, 370 flow [2022-01-18 22:52:52,284 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 89.55555555555556) internal successors, (806), 9 states have internal predecessors, (806), 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) [2022-01-18 22:52:52,284 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-18 22:52:52,284 INFO L254 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 22:52:52,284 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-01-18 22:52:52,284 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-01-18 22:52:52,284 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 22:52:52,284 INFO L85 PathProgramCache]: Analyzing trace with hash 1797744709, now seen corresponding path program 1 times [2022-01-18 22:52:52,285 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 22:52:52,285 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1047452465] [2022-01-18 22:52:52,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 22:52:52,285 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 22:52:52,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 22:52:52,391 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 22:52:52,391 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 22:52:52,391 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1047452465] [2022-01-18 22:52:52,391 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1047452465] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 22:52:52,391 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 22:52:52,391 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-18 22:52:52,391 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [439783472] [2022-01-18 22:52:52,392 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 22:52:52,392 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-18 22:52:52,392 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 22:52:52,392 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-18 22:52:52,392 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-01-18 22:52:52,393 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 88 out of 107 [2022-01-18 22:52:52,394 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 122 places, 97 transitions, 370 flow. Second operand has 7 states, 7 states have (on average 90.14285714285714) internal successors, (631), 7 states have internal predecessors, (631), 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) [2022-01-18 22:52:52,394 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-18 22:52:52,394 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 88 of 107 [2022-01-18 22:52:52,394 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-18 22:52:52,507 INFO L129 PetriNetUnfolder]: 43/257 cut-off events. [2022-01-18 22:52:52,507 INFO L130 PetriNetUnfolder]: For 323/370 co-relation queries the response was YES. [2022-01-18 22:52:52,508 INFO L84 FinitePrefix]: Finished finitePrefix Result has 609 conditions, 257 events. 43/257 cut-off events. For 323/370 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 931 event pairs, 1 based on Foata normal form. 1/247 useless extension candidates. Maximal degree in co-relation 564. Up to 41 conditions per place. [2022-01-18 22:52:52,509 INFO L132 encePairwiseOnDemand]: 101/107 looper letters, 14 selfloop transitions, 1 changer transitions 8/105 dead transitions. [2022-01-18 22:52:52,510 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 124 places, 105 transitions, 437 flow [2022-01-18 22:52:52,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-18 22:52:52,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-01-18 22:52:52,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 640 transitions. [2022-01-18 22:52:52,512 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8544726301735648 [2022-01-18 22:52:52,512 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 640 transitions. [2022-01-18 22:52:52,512 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 640 transitions. [2022-01-18 22:52:52,513 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-18 22:52:52,513 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 640 transitions. [2022-01-18 22:52:52,514 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 91.42857142857143) internal successors, (640), 7 states have internal predecessors, (640), 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) [2022-01-18 22:52:52,515 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 107.0) internal successors, (856), 8 states have internal predecessors, (856), 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) [2022-01-18 22:52:52,516 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 107.0) internal successors, (856), 8 states have internal predecessors, (856), 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) [2022-01-18 22:52:52,516 INFO L186 Difference]: Start difference. First operand has 122 places, 97 transitions, 370 flow. Second operand 7 states and 640 transitions. [2022-01-18 22:52:52,516 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 124 places, 105 transitions, 437 flow [2022-01-18 22:52:52,518 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 107 places, 105 transitions, 311 flow, removed 31 selfloop flow, removed 17 redundant places. [2022-01-18 22:52:52,519 INFO L242 Difference]: Finished difference. Result has 112 places, 97 transitions, 257 flow [2022-01-18 22:52:52,519 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=107, PETRI_DIFFERENCE_MINUEND_FLOW=244, PETRI_DIFFERENCE_MINUEND_PLACES=101, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=97, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=96, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=257, PETRI_PLACES=112, PETRI_TRANSITIONS=97} [2022-01-18 22:52:52,520 INFO L334 CegarLoopForPetriNet]: 99 programPoint places, 13 predicate places. [2022-01-18 22:52:52,520 INFO L470 AbstractCegarLoop]: Abstraction has has 112 places, 97 transitions, 257 flow [2022-01-18 22:52:52,521 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 90.14285714285714) internal successors, (631), 7 states have internal predecessors, (631), 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) [2022-01-18 22:52:52,521 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-18 22:52:52,521 INFO L254 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 22:52:52,521 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-01-18 22:52:52,521 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-01-18 22:52:52,522 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 22:52:52,522 INFO L85 PathProgramCache]: Analyzing trace with hash -1553836557, now seen corresponding path program 2 times [2022-01-18 22:52:52,522 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 22:52:52,522 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [680292153] [2022-01-18 22:52:52,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 22:52:52,522 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 22:52:52,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 22:52:52,594 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 22:52:52,594 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 22:52:52,594 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [680292153] [2022-01-18 22:52:52,595 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [680292153] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 22:52:52,595 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 22:52:52,595 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-18 22:52:52,595 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [709532416] [2022-01-18 22:52:52,595 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 22:52:52,595 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-18 22:52:52,596 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 22:52:52,596 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-18 22:52:52,596 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-01-18 22:52:52,597 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 88 out of 107 [2022-01-18 22:52:52,598 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 112 places, 97 transitions, 257 flow. Second operand has 7 states, 7 states have (on average 90.14285714285714) internal successors, (631), 7 states have internal predecessors, (631), 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) [2022-01-18 22:52:52,598 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-18 22:52:52,598 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 88 of 107 [2022-01-18 22:52:52,598 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-18 22:52:52,683 INFO L129 PetriNetUnfolder]: 34/212 cut-off events. [2022-01-18 22:52:52,684 INFO L130 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2022-01-18 22:52:52,685 INFO L84 FinitePrefix]: Finished finitePrefix Result has 330 conditions, 212 events. 34/212 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 772 event pairs, 1 based on Foata normal form. 1/204 useless extension candidates. Maximal degree in co-relation 322. Up to 30 conditions per place. [2022-01-18 22:52:52,685 INFO L132 encePairwiseOnDemand]: 101/107 looper letters, 0 selfloop transitions, 0 changer transitions 97/97 dead transitions. [2022-01-18 22:52:52,685 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 112 places, 97 transitions, 288 flow [2022-01-18 22:52:52,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-18 22:52:52,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-01-18 22:52:52,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 633 transitions. [2022-01-18 22:52:52,687 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8451268357810414 [2022-01-18 22:52:52,687 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 633 transitions. [2022-01-18 22:52:52,687 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 633 transitions. [2022-01-18 22:52:52,687 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-18 22:52:52,687 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 633 transitions. [2022-01-18 22:52:52,689 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 90.42857142857143) internal successors, (633), 7 states have internal predecessors, (633), 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) [2022-01-18 22:52:52,690 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 107.0) internal successors, (856), 8 states have internal predecessors, (856), 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) [2022-01-18 22:52:52,690 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 107.0) internal successors, (856), 8 states have internal predecessors, (856), 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) [2022-01-18 22:52:52,691 INFO L186 Difference]: Start difference. First operand has 112 places, 97 transitions, 257 flow. Second operand 7 states and 633 transitions. [2022-01-18 22:52:52,691 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 112 places, 97 transitions, 288 flow [2022-01-18 22:52:52,692 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 108 places, 97 transitions, 281 flow, removed 3 selfloop flow, removed 4 redundant places. [2022-01-18 22:52:52,692 INFO L242 Difference]: Finished difference. Result has 108 places, 0 transitions, 0 flow [2022-01-18 22:52:52,693 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=107, PETRI_DIFFERENCE_MINUEND_FLOW=244, PETRI_DIFFERENCE_MINUEND_PLACES=102, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=95, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=95, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=0, PETRI_PLACES=108, PETRI_TRANSITIONS=0} [2022-01-18 22:52:52,693 INFO L334 CegarLoopForPetriNet]: 99 programPoint places, 9 predicate places. [2022-01-18 22:52:52,693 INFO L470 AbstractCegarLoop]: Abstraction has has 108 places, 0 transitions, 0 flow [2022-01-18 22:52:52,694 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 90.14285714285714) internal successors, (631), 7 states have internal predecessors, (631), 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) [2022-01-18 22:52:52,696 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (4 of 5 remaining) [2022-01-18 22:52:52,696 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATION (3 of 5 remaining) [2022-01-18 22:52:52,697 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATION (2 of 5 remaining) [2022-01-18 22:52:52,697 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATION (1 of 5 remaining) [2022-01-18 22:52:52,697 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3INUSE_VIOLATION (0 of 5 remaining) [2022-01-18 22:52:52,697 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-01-18 22:52:52,700 INFO L732 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 22:52:52,702 INFO L230 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-01-18 22:52:52,702 INFO L180 ceAbstractionStarter]: Computing trace abstraction results [2022-01-18 22:52:52,705 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.01 10:52:52 BasicIcfg [2022-01-18 22:52:52,705 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-01-18 22:52:52,705 INFO L158 Benchmark]: Toolchain (without parser) took 4859.93ms. Allocated memory was 392.2MB in the beginning and 534.8MB in the end (delta: 142.6MB). Free memory was 337.1MB in the beginning and 458.5MB in the end (delta: -121.5MB). Peak memory consumption was 22.4MB. Max. memory is 16.0GB. [2022-01-18 22:52:52,705 INFO L158 Benchmark]: CDTParser took 0.15ms. Allocated memory is still 392.2MB. Free memory was 355.3MB in the beginning and 355.2MB in the end (delta: 95.4kB). There was no memory consumed. Max. memory is 16.0GB. [2022-01-18 22:52:52,706 INFO L158 Benchmark]: CACSL2BoogieTranslator took 421.23ms. Allocated memory is still 392.2MB. Free memory was 336.9MB in the beginning and 353.9MB in the end (delta: -17.0MB). Peak memory consumption was 18.0MB. Max. memory is 16.0GB. [2022-01-18 22:52:52,706 INFO L158 Benchmark]: Boogie Procedure Inliner took 33.73ms. Allocated memory is still 392.2MB. Free memory was 353.9MB in the beginning and 351.8MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2022-01-18 22:52:52,706 INFO L158 Benchmark]: Boogie Preprocessor took 22.44ms. Allocated memory is still 392.2MB. Free memory was 351.8MB in the beginning and 350.8MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2022-01-18 22:52:52,706 INFO L158 Benchmark]: RCFGBuilder took 408.92ms. Allocated memory is still 392.2MB. Free memory was 350.8MB in the beginning and 336.1MB in the end (delta: 14.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.0GB. [2022-01-18 22:52:52,707 INFO L158 Benchmark]: TraceAbstraction took 3968.40ms. Allocated memory was 392.2MB in the beginning and 534.8MB in the end (delta: 142.6MB). Free memory was 336.1MB in the beginning and 458.5MB in the end (delta: -122.5MB). Peak memory consumption was 21.2MB. Max. memory is 16.0GB. [2022-01-18 22:52:52,708 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15ms. Allocated memory is still 392.2MB. Free memory was 355.3MB in the beginning and 355.2MB in the end (delta: 95.4kB). There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 421.23ms. Allocated memory is still 392.2MB. Free memory was 336.9MB in the beginning and 353.9MB in the end (delta: -17.0MB). Peak memory consumption was 18.0MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 33.73ms. Allocated memory is still 392.2MB. Free memory was 353.9MB in the beginning and 351.8MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 22.44ms. Allocated memory is still 392.2MB. Free memory was 351.8MB in the beginning and 350.8MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 408.92ms. Allocated memory is still 392.2MB. Free memory was 350.8MB in the beginning and 336.1MB in the end (delta: 14.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.0GB. * TraceAbstraction took 3968.40ms. Allocated memory was 392.2MB in the beginning and 534.8MB in the end (delta: 142.6MB). Free memory was 336.1MB in the beginning and 458.5MB in the end (delta: -122.5MB). Peak memory consumption was 21.2MB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 18]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 9 procedures, 136 locations, 5 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 3.8s, OverallIterations: 10, TraceHistogramMax: 1, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 2.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 359 SdHoareTripleChecker+Valid, 0.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 359 mSDsluCounter, 423 SdHoareTripleChecker+Invalid, 0.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 493 mSDsCounter, 114 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 724 IncrementalHoareTripleChecker+Invalid, 838 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 114 mSolverCounterUnsat, 100 mSDtfsCounter, 724 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 131 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 111 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 121 ImplicationChecksByTransitivity, 0.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=400occurred in iteration=7, InterpolantAutomatonStates: 96, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.1s InterpolantComputationTime, 709 NumberOfCodeBlocks, 709 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 699 ConstructedInterpolants, 0 QuantifiedInterpolants, 2719 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 10 InterpolantComputations, 10 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2022-01-18 22:52:52,740 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...