./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/pthread-nondet/nondet-array-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version ff03de63 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/pthread-nondet/nondet-array-1.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash e22e1beeef18edf77effe210ae0122c1338eccee79cdab905e0b74599361bc08 --- Real Ultimate output --- This is Ultimate 0.2.2-dev-ff03de6 [2021-12-21 15:10:01,501 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-21 15:10:01,502 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-21 15:10:01,557 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-21 15:10:01,558 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-21 15:10:01,561 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-21 15:10:01,562 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-21 15:10:01,566 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-21 15:10:01,568 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-21 15:10:01,568 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-21 15:10:01,569 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-21 15:10:01,570 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-21 15:10:01,570 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-21 15:10:01,572 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-21 15:10:01,573 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-21 15:10:01,573 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-21 15:10:01,574 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-21 15:10:01,575 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-21 15:10:01,576 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-21 15:10:01,577 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-21 15:10:01,578 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-21 15:10:01,582 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-21 15:10:01,583 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-21 15:10:01,587 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-21 15:10:01,588 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-21 15:10:01,591 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-21 15:10:01,591 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-21 15:10:01,592 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-21 15:10:01,593 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-21 15:10:01,594 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-21 15:10:01,594 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-21 15:10:01,595 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-21 15:10:01,595 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-21 15:10:01,596 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-21 15:10:01,597 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-21 15:10:01,597 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-21 15:10:01,598 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-21 15:10:01,599 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-21 15:10:01,599 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-21 15:10:01,599 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-21 15:10:01,600 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-21 15:10:01,601 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-21 15:10:01,631 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-21 15:10:01,632 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-21 15:10:01,632 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-21 15:10:01,632 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-21 15:10:01,633 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-21 15:10:01,633 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-21 15:10:01,634 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-21 15:10:01,634 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-21 15:10:01,634 INFO L138 SettingsManager]: * Use SBE=true [2021-12-21 15:10:01,634 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-21 15:10:01,635 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-21 15:10:01,635 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-21 15:10:01,635 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-21 15:10:01,635 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-21 15:10:01,635 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-21 15:10:01,635 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-21 15:10:01,636 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-21 15:10:01,636 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-21 15:10:01,636 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-21 15:10:01,636 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-21 15:10:01,636 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-21 15:10:01,636 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-21 15:10:01,636 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-21 15:10:01,636 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-21 15:10:01,637 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-21 15:10:01,637 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-21 15:10:01,637 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-21 15:10:01,637 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-21 15:10:01,637 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-21 15:10:01,637 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-21 15:10:01,638 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-21 15:10:01,638 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-21 15:10:01,638 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-21 15:10:01,638 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-21 15:10:01,638 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e22e1beeef18edf77effe210ae0122c1338eccee79cdab905e0b74599361bc08 [2021-12-21 15:10:01,814 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-21 15:10:01,848 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-21 15:10:01,850 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-21 15:10:01,851 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-21 15:10:01,852 INFO L275 PluginConnector]: CDTParser initialized [2021-12-21 15:10:01,853 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-nondet/nondet-array-1.i [2021-12-21 15:10:01,902 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9e7a5c03f/76d688828b2b443a99f8131c91abe1ed/FLAGe6ffa4256 [2021-12-21 15:10:02,290 INFO L306 CDTParser]: Found 1 translation units. [2021-12-21 15:10:02,290 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-nondet/nondet-array-1.i [2021-12-21 15:10:02,300 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9e7a5c03f/76d688828b2b443a99f8131c91abe1ed/FLAGe6ffa4256 [2021-12-21 15:10:02,656 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9e7a5c03f/76d688828b2b443a99f8131c91abe1ed [2021-12-21 15:10:02,659 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-21 15:10:02,660 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-21 15:10:02,663 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-21 15:10:02,663 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-21 15:10:02,665 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-21 15:10:02,665 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 03:10:02" (1/1) ... [2021-12-21 15:10:02,666 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1c95f122 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 03:10:02, skipping insertion in model container [2021-12-21 15:10:02,667 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 03:10:02" (1/1) ... [2021-12-21 15:10:02,672 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-21 15:10:02,708 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-21 15:10:02,926 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-nondet/nondet-array-1.i[30035,30048] [2021-12-21 15:10:02,943 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-21 15:10:02,954 INFO L203 MainTranslator]: Completed pre-run [2021-12-21 15:10:02,986 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-nondet/nondet-array-1.i[30035,30048] [2021-12-21 15:10:02,990 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-21 15:10:03,014 INFO L208 MainTranslator]: Completed translation [2021-12-21 15:10:03,015 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 03:10:03 WrapperNode [2021-12-21 15:10:03,016 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-21 15:10:03,017 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-21 15:10:03,017 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-21 15:10:03,017 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-21 15:10:03,022 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 03:10:03" (1/1) ... [2021-12-21 15:10:03,047 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 03:10:03" (1/1) ... [2021-12-21 15:10:03,070 INFO L137 Inliner]: procedures = 170, calls = 18, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 73 [2021-12-21 15:10:03,071 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-21 15:10:03,072 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-21 15:10:03,072 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-21 15:10:03,072 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-21 15:10:03,077 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 03:10:03" (1/1) ... [2021-12-21 15:10:03,077 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 03:10:03" (1/1) ... [2021-12-21 15:10:03,083 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 03:10:03" (1/1) ... [2021-12-21 15:10:03,084 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 03:10:03" (1/1) ... [2021-12-21 15:10:03,090 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 03:10:03" (1/1) ... [2021-12-21 15:10:03,095 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 03:10:03" (1/1) ... [2021-12-21 15:10:03,101 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 03:10:03" (1/1) ... [2021-12-21 15:10:03,107 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-21 15:10:03,112 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-21 15:10:03,112 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-21 15:10:03,113 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-21 15:10:03,114 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 03:10:03" (1/1) ... [2021-12-21 15:10:03,119 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-21 15:10:03,127 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 15:10:03,137 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) [2021-12-21 15:10:03,139 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 [2021-12-21 15:10:03,190 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-12-21 15:10:03,190 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-12-21 15:10:03,190 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-12-21 15:10:03,190 INFO L130 BoogieDeclarations]: Found specification of procedure thr [2021-12-21 15:10:03,190 INFO L138 BoogieDeclarations]: Found implementation of procedure thr [2021-12-21 15:10:03,190 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-21 15:10:03,190 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-21 15:10:03,190 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-21 15:10:03,191 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-21 15:10:03,191 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-21 15:10:03,191 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-21 15:10:03,192 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-12-21 15:10:03,296 INFO L234 CfgBuilder]: Building ICFG [2021-12-21 15:10:03,297 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-21 15:10:03,450 INFO L275 CfgBuilder]: Performing block encoding [2021-12-21 15:10:03,455 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-21 15:10:03,455 INFO L299 CfgBuilder]: Removed 3 assume(true) statements. [2021-12-21 15:10:03,457 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 03:10:03 BoogieIcfgContainer [2021-12-21 15:10:03,457 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-21 15:10:03,458 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-21 15:10:03,458 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-21 15:10:03,477 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-21 15:10:03,477 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.12 03:10:02" (1/3) ... [2021-12-21 15:10:03,478 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6eaa0a43 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 03:10:03, skipping insertion in model container [2021-12-21 15:10:03,478 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 03:10:03" (2/3) ... [2021-12-21 15:10:03,478 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6eaa0a43 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 03:10:03, skipping insertion in model container [2021-12-21 15:10:03,478 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 03:10:03" (3/3) ... [2021-12-21 15:10:03,479 INFO L111 eAbstractionObserver]: Analyzing ICFG nondet-array-1.i [2021-12-21 15:10:03,490 WARN L149 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-12-21 15:10:03,491 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-21 15:10:03,491 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-21 15:10:03,491 INFO L513 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-12-21 15:10:03,528 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:03,529 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:03,529 WARN L322 ript$VariableManager]: TermVariabe thrThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:03,529 WARN L322 ript$VariableManager]: TermVariabe thrThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:03,530 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:03,530 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:03,530 WARN L322 ript$VariableManager]: TermVariabe thrThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:03,530 WARN L322 ript$VariableManager]: TermVariabe thrThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:03,531 WARN L322 ript$VariableManager]: TermVariabe thrThread1of1ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:03,532 WARN L322 ript$VariableManager]: TermVariabe thrThread1of1ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:03,533 WARN L322 ript$VariableManager]: TermVariabe thrThread1of1ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:03,533 WARN L322 ript$VariableManager]: TermVariabe thrThread1of1ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:03,535 WARN L322 ript$VariableManager]: TermVariabe thrThread1of1ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:03,536 WARN L322 ript$VariableManager]: TermVariabe thrThread1of1ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:03,540 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:03,543 WARN L322 ript$VariableManager]: TermVariabe thrThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:03,543 WARN L322 ript$VariableManager]: TermVariabe thrThread1of1ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:03,544 WARN L322 ript$VariableManager]: TermVariabe thrThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:03,544 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:03,547 INFO L148 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2021-12-21 15:10:03,592 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-21 15:10:03,604 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=true, 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 [2021-12-21 15:10:03,605 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-12-21 15:10:03,615 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 84 places, 88 transitions, 184 flow [2021-12-21 15:10:03,674 INFO L129 PetriNetUnfolder]: 12/126 cut-off events. [2021-12-21 15:10:03,675 INFO L130 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2021-12-21 15:10:03,678 INFO L84 FinitePrefix]: Finished finitePrefix Result has 132 conditions, 126 events. 12/126 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 225 event pairs, 0 based on Foata normal form. 0/109 useless extension candidates. Maximal degree in co-relation 71. Up to 4 conditions per place. [2021-12-21 15:10:03,678 INFO L82 GeneralOperation]: Start removeDead. Operand has 84 places, 88 transitions, 184 flow [2021-12-21 15:10:03,682 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 75 places, 78 transitions, 164 flow [2021-12-21 15:10:03,701 INFO L129 PetriNetUnfolder]: 6/74 cut-off events. [2021-12-21 15:10:03,702 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-12-21 15:10:03,702 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-21 15:10:03,703 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] [2021-12-21 15:10:03,703 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION] === [2021-12-21 15:10:03,708 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 15:10:03,708 INFO L85 PathProgramCache]: Analyzing trace with hash -744396743, now seen corresponding path program 1 times [2021-12-21 15:10:03,713 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 15:10:03,714 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [306909965] [2021-12-21 15:10:03,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 15:10:03,715 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 15:10:03,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:10:03,892 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 15:10:03,892 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 15:10:03,892 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [306909965] [2021-12-21 15:10:03,893 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [306909965] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 15:10:03,893 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 15:10:03,893 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-21 15:10:03,895 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1613961535] [2021-12-21 15:10:03,895 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 15:10:03,903 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-12-21 15:10:03,903 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 15:10:03,929 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-12-21 15:10:03,931 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-12-21 15:10:03,933 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 80 out of 88 [2021-12-21 15:10:03,938 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 78 transitions, 164 flow. Second operand has 2 states, 2 states have (on average 81.0) internal successors, (162), 2 states have internal predecessors, (162), 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) [2021-12-21 15:10:03,938 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-21 15:10:03,938 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 80 of 88 [2021-12-21 15:10:03,939 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-21 15:10:03,966 INFO L129 PetriNetUnfolder]: 3/99 cut-off events. [2021-12-21 15:10:03,967 INFO L130 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2021-12-21 15:10:03,967 INFO L84 FinitePrefix]: Finished finitePrefix Result has 108 conditions, 99 events. 3/99 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 145 event pairs, 0 based on Foata normal form. 7/99 useless extension candidates. Maximal degree in co-relation 57. Up to 4 conditions per place. [2021-12-21 15:10:03,969 INFO L132 encePairwiseOnDemand]: 84/88 looper letters, 2 selfloop transitions, 0 changer transitions 1/74 dead transitions. [2021-12-21 15:10:03,969 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 74 transitions, 160 flow [2021-12-21 15:10:03,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-12-21 15:10:03,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2021-12-21 15:10:03,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 166 transitions. [2021-12-21 15:10:03,980 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.9431818181818182 [2021-12-21 15:10:03,981 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 166 transitions. [2021-12-21 15:10:03,981 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 166 transitions. [2021-12-21 15:10:03,998 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-21 15:10:04,000 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 166 transitions. [2021-12-21 15:10:04,006 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 83.0) internal successors, (166), 2 states have internal predecessors, (166), 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) [2021-12-21 15:10:04,009 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 88.0) internal successors, (264), 3 states have internal predecessors, (264), 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) [2021-12-21 15:10:04,010 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 88.0) internal successors, (264), 3 states have internal predecessors, (264), 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) [2021-12-21 15:10:04,011 INFO L186 Difference]: Start difference. First operand has 75 places, 78 transitions, 164 flow. Second operand 2 states and 166 transitions. [2021-12-21 15:10:04,012 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 74 transitions, 160 flow [2021-12-21 15:10:04,018 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 74 transitions, 160 flow, removed 0 selfloop flow, removed 0 redundant places. [2021-12-21 15:10:04,023 INFO L242 Difference]: Finished difference. Result has 76 places, 73 transitions, 154 flow [2021-12-21 15:10:04,024 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=88, PETRI_DIFFERENCE_MINUEND_FLOW=156, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=154, PETRI_PLACES=76, PETRI_TRANSITIONS=73} [2021-12-21 15:10:04,028 INFO L334 CegarLoopForPetriNet]: 75 programPoint places, 1 predicate places. [2021-12-21 15:10:04,029 INFO L470 AbstractCegarLoop]: Abstraction has has 76 places, 73 transitions, 154 flow [2021-12-21 15:10:04,029 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 81.0) internal successors, (162), 2 states have internal predecessors, (162), 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) [2021-12-21 15:10:04,029 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-21 15:10:04,030 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] [2021-12-21 15:10:04,032 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-21 15:10:04,032 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION] === [2021-12-21 15:10:04,033 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 15:10:04,033 INFO L85 PathProgramCache]: Analyzing trace with hash -53406567, now seen corresponding path program 1 times [2021-12-21 15:10:04,033 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 15:10:04,034 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1863892839] [2021-12-21 15:10:04,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 15:10:04,034 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 15:10:04,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:10:04,184 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 15:10:04,185 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 15:10:04,185 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1863892839] [2021-12-21 15:10:04,185 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1863892839] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 15:10:04,185 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 15:10:04,185 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-21 15:10:04,186 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [904126286] [2021-12-21 15:10:04,186 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 15:10:04,187 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-21 15:10:04,187 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 15:10:04,187 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-21 15:10:04,191 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2021-12-21 15:10:04,193 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 54 out of 88 [2021-12-21 15:10:04,195 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 73 transitions, 154 flow. Second operand has 6 states, 6 states have (on average 56.166666666666664) internal successors, (337), 6 states have internal predecessors, (337), 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) [2021-12-21 15:10:04,195 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-21 15:10:04,195 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 54 of 88 [2021-12-21 15:10:04,195 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-21 15:10:04,260 INFO L129 PetriNetUnfolder]: 1/85 cut-off events. [2021-12-21 15:10:04,260 INFO L130 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2021-12-21 15:10:04,260 INFO L84 FinitePrefix]: Finished finitePrefix Result has 128 conditions, 85 events. 1/85 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 31 event pairs, 0 based on Foata normal form. 0/82 useless extension candidates. Maximal degree in co-relation 124. Up to 15 conditions per place. [2021-12-21 15:10:04,261 INFO L132 encePairwiseOnDemand]: 76/88 looper letters, 24 selfloop transitions, 9 changer transitions 2/81 dead transitions. [2021-12-21 15:10:04,261 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 81 transitions, 240 flow [2021-12-21 15:10:04,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-21 15:10:04,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2021-12-21 15:10:04,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 362 transitions. [2021-12-21 15:10:04,264 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.6856060606060606 [2021-12-21 15:10:04,264 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 362 transitions. [2021-12-21 15:10:04,264 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 362 transitions. [2021-12-21 15:10:04,265 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-21 15:10:04,265 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 362 transitions. [2021-12-21 15:10:04,266 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 60.333333333333336) internal successors, (362), 6 states have internal predecessors, (362), 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) [2021-12-21 15:10:04,268 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 88.0) internal successors, (616), 7 states have internal predecessors, (616), 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) [2021-12-21 15:10:04,268 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 88.0) internal successors, (616), 7 states have internal predecessors, (616), 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) [2021-12-21 15:10:04,269 INFO L186 Difference]: Start difference. First operand has 76 places, 73 transitions, 154 flow. Second operand 6 states and 362 transitions. [2021-12-21 15:10:04,269 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 81 transitions, 240 flow [2021-12-21 15:10:04,270 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 81 transitions, 240 flow, removed 0 selfloop flow, removed 0 redundant places. [2021-12-21 15:10:04,271 INFO L242 Difference]: Finished difference. Result has 81 places, 74 transitions, 188 flow [2021-12-21 15:10:04,271 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=88, PETRI_DIFFERENCE_MINUEND_FLOW=154, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=188, PETRI_PLACES=81, PETRI_TRANSITIONS=74} [2021-12-21 15:10:04,272 INFO L334 CegarLoopForPetriNet]: 75 programPoint places, 6 predicate places. [2021-12-21 15:10:04,272 INFO L470 AbstractCegarLoop]: Abstraction has has 81 places, 74 transitions, 188 flow [2021-12-21 15:10:04,273 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 56.166666666666664) internal successors, (337), 6 states have internal predecessors, (337), 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) [2021-12-21 15:10:04,273 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-21 15:10:04,273 INFO L254 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 15:10:04,273 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-21 15:10:04,273 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION] === [2021-12-21 15:10:04,274 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 15:10:04,274 INFO L85 PathProgramCache]: Analyzing trace with hash -658806082, now seen corresponding path program 1 times [2021-12-21 15:10:04,274 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 15:10:04,274 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1832302481] [2021-12-21 15:10:04,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 15:10:04,275 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 15:10:04,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-21 15:10:04,305 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-21 15:10:04,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-21 15:10:04,354 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-21 15:10:04,354 INFO L628 BasicCegarLoop]: Counterexample is feasible [2021-12-21 15:10:04,356 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATION (1 of 2 remaining) [2021-12-21 15:10:04,358 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2021-12-21 15:10:04,358 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-21 15:10:04,361 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2021-12-21 15:10:04,362 WARN L234 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2021-12-21 15:10:04,362 INFO L513 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2021-12-21 15:10:04,382 WARN L322 ript$VariableManager]: TermVariabe |thrThread2of2ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:04,383 WARN L322 ript$VariableManager]: TermVariabe |thrThread2of2ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:04,384 WARN L322 ript$VariableManager]: TermVariabe thrThread2of2ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:04,384 WARN L322 ript$VariableManager]: TermVariabe thrThread2of2ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:04,384 WARN L322 ript$VariableManager]: TermVariabe |thrThread2of2ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:04,385 WARN L322 ript$VariableManager]: TermVariabe |thrThread2of2ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:04,385 WARN L322 ript$VariableManager]: TermVariabe thrThread2of2ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:04,385 WARN L322 ript$VariableManager]: TermVariabe thrThread2of2ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:04,385 WARN L322 ript$VariableManager]: TermVariabe thrThread2of2ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:04,385 WARN L322 ript$VariableManager]: TermVariabe thrThread2of2ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:04,385 WARN L322 ript$VariableManager]: TermVariabe thrThread2of2ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:04,386 WARN L322 ript$VariableManager]: TermVariabe thrThread2of2ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:04,386 WARN L322 ript$VariableManager]: TermVariabe thrThread2of2ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:04,386 WARN L322 ript$VariableManager]: TermVariabe thrThread2of2ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:04,386 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of2ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:04,387 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of2ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:04,387 WARN L322 ript$VariableManager]: TermVariabe thrThread1of2ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:04,387 WARN L322 ript$VariableManager]: TermVariabe thrThread1of2ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:04,387 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of2ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:04,387 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of2ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:04,387 WARN L322 ript$VariableManager]: TermVariabe thrThread1of2ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:04,387 WARN L322 ript$VariableManager]: TermVariabe thrThread1of2ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:04,387 WARN L322 ript$VariableManager]: TermVariabe thrThread1of2ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:04,388 WARN L322 ript$VariableManager]: TermVariabe thrThread1of2ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:04,388 WARN L322 ript$VariableManager]: TermVariabe thrThread1of2ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:04,389 WARN L322 ript$VariableManager]: TermVariabe thrThread1of2ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:04,389 WARN L322 ript$VariableManager]: TermVariabe thrThread1of2ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:04,389 WARN L322 ript$VariableManager]: TermVariabe thrThread1of2ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:04,390 WARN L322 ript$VariableManager]: TermVariabe thrThread1of2ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:04,390 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of2ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:04,390 WARN L322 ript$VariableManager]: TermVariabe thrThread1of2ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:04,390 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of2ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:04,390 WARN L322 ript$VariableManager]: TermVariabe thrThread1of2ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:04,392 WARN L322 ript$VariableManager]: TermVariabe |thrThread2of2ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:04,392 WARN L322 ript$VariableManager]: TermVariabe thrThread2of2ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:04,392 WARN L322 ript$VariableManager]: TermVariabe thrThread2of2ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:04,392 WARN L322 ript$VariableManager]: TermVariabe thrThread2of2ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:04,392 WARN L322 ript$VariableManager]: TermVariabe |thrThread2of2ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:04,395 INFO L148 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2021-12-21 15:10:04,399 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-21 15:10:04,403 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=true, 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 [2021-12-21 15:10:04,403 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-12-21 15:10:04,406 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 92 places, 95 transitions, 208 flow [2021-12-21 15:10:04,444 INFO L129 PetriNetUnfolder]: 23/217 cut-off events. [2021-12-21 15:10:04,445 INFO L130 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2021-12-21 15:10:04,446 INFO L84 FinitePrefix]: Finished finitePrefix Result has 231 conditions, 217 events. 23/217 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 512 event pairs, 0 based on Foata normal form. 0/186 useless extension candidates. Maximal degree in co-relation 128. Up to 8 conditions per place. [2021-12-21 15:10:04,446 INFO L82 GeneralOperation]: Start removeDead. Operand has 92 places, 95 transitions, 208 flow [2021-12-21 15:10:04,447 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 83 places, 85 transitions, 188 flow [2021-12-21 15:10:04,458 INFO L129 PetriNetUnfolder]: 7/76 cut-off events. [2021-12-21 15:10:04,459 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-12-21 15:10:04,459 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-21 15:10:04,459 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] [2021-12-21 15:10:04,459 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION] === [2021-12-21 15:10:04,460 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 15:10:04,460 INFO L85 PathProgramCache]: Analyzing trace with hash 477382265, now seen corresponding path program 1 times [2021-12-21 15:10:04,461 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 15:10:04,463 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1625486519] [2021-12-21 15:10:04,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 15:10:04,463 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 15:10:04,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:10:04,493 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 15:10:04,493 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 15:10:04,493 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1625486519] [2021-12-21 15:10:04,494 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1625486519] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 15:10:04,494 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 15:10:04,494 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-21 15:10:04,494 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1075348706] [2021-12-21 15:10:04,494 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 15:10:04,494 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-12-21 15:10:04,494 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 15:10:04,495 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-12-21 15:10:04,495 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-12-21 15:10:04,495 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 85 out of 95 [2021-12-21 15:10:04,496 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 85 transitions, 188 flow. Second operand has 2 states, 2 states have (on average 85.5) internal successors, (171), 2 states have internal predecessors, (171), 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) [2021-12-21 15:10:04,496 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-21 15:10:04,496 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 85 of 95 [2021-12-21 15:10:04,496 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-21 15:10:04,515 INFO L129 PetriNetUnfolder]: 7/165 cut-off events. [2021-12-21 15:10:04,516 INFO L130 PetriNetUnfolder]: For 17/17 co-relation queries the response was YES. [2021-12-21 15:10:04,517 INFO L84 FinitePrefix]: Finished finitePrefix Result has 186 conditions, 165 events. 7/165 cut-off events. For 17/17 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 344 event pairs, 0 based on Foata normal form. 12/165 useless extension candidates. Maximal degree in co-relation 103. Up to 8 conditions per place. [2021-12-21 15:10:04,517 INFO L132 encePairwiseOnDemand]: 91/95 looper letters, 4 selfloop transitions, 0 changer transitions 1/81 dead transitions. [2021-12-21 15:10:04,518 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 81 transitions, 188 flow [2021-12-21 15:10:04,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-12-21 15:10:04,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2021-12-21 15:10:04,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 178 transitions. [2021-12-21 15:10:04,522 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.9368421052631579 [2021-12-21 15:10:04,523 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 178 transitions. [2021-12-21 15:10:04,523 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 178 transitions. [2021-12-21 15:10:04,524 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-21 15:10:04,524 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 178 transitions. [2021-12-21 15:10:04,524 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 89.0) internal successors, (178), 2 states have internal predecessors, (178), 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) [2021-12-21 15:10:04,525 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 95.0) internal successors, (285), 3 states have internal predecessors, (285), 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) [2021-12-21 15:10:04,525 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 95.0) internal successors, (285), 3 states have internal predecessors, (285), 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) [2021-12-21 15:10:04,525 INFO L186 Difference]: Start difference. First operand has 83 places, 85 transitions, 188 flow. Second operand 2 states and 178 transitions. [2021-12-21 15:10:04,525 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 81 transitions, 188 flow [2021-12-21 15:10:04,526 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 81 transitions, 188 flow, removed 0 selfloop flow, removed 0 redundant places. [2021-12-21 15:10:04,527 INFO L242 Difference]: Finished difference. Result has 84 places, 80 transitions, 178 flow [2021-12-21 15:10:04,527 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=95, PETRI_DIFFERENCE_MINUEND_FLOW=180, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=178, PETRI_PLACES=84, PETRI_TRANSITIONS=80} [2021-12-21 15:10:04,528 INFO L334 CegarLoopForPetriNet]: 83 programPoint places, 1 predicate places. [2021-12-21 15:10:04,528 INFO L470 AbstractCegarLoop]: Abstraction has has 84 places, 80 transitions, 178 flow [2021-12-21 15:10:04,529 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 85.5) internal successors, (171), 2 states have internal predecessors, (171), 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) [2021-12-21 15:10:04,529 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-21 15:10:04,529 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] [2021-12-21 15:10:04,529 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-21 15:10:04,530 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION] === [2021-12-21 15:10:04,530 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 15:10:04,530 INFO L85 PathProgramCache]: Analyzing trace with hash 280868760, now seen corresponding path program 1 times [2021-12-21 15:10:04,530 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 15:10:04,530 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2103045362] [2021-12-21 15:10:04,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 15:10:04,531 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 15:10:04,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:10:04,590 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 15:10:04,591 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 15:10:04,591 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2103045362] [2021-12-21 15:10:04,591 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2103045362] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 15:10:04,591 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 15:10:04,591 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-21 15:10:04,591 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1647632720] [2021-12-21 15:10:04,591 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 15:10:04,592 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-21 15:10:04,592 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 15:10:04,592 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-21 15:10:04,592 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2021-12-21 15:10:04,593 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 59 out of 95 [2021-12-21 15:10:04,594 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 80 transitions, 178 flow. Second operand has 6 states, 6 states have (on average 61.166666666666664) internal successors, (367), 6 states have internal predecessors, (367), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 15:10:04,594 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-21 15:10:04,594 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 59 of 95 [2021-12-21 15:10:04,594 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-21 15:10:04,690 INFO L129 PetriNetUnfolder]: 5/169 cut-off events. [2021-12-21 15:10:04,690 INFO L130 PetriNetUnfolder]: For 7/7 co-relation queries the response was YES. [2021-12-21 15:10:04,691 INFO L84 FinitePrefix]: Finished finitePrefix Result has 266 conditions, 169 events. 5/169 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 322 event pairs, 0 based on Foata normal form. 0/161 useless extension candidates. Maximal degree in co-relation 261. Up to 45 conditions per place. [2021-12-21 15:10:04,691 INFO L132 encePairwiseOnDemand]: 83/95 looper letters, 34 selfloop transitions, 9 changer transitions 0/94 dead transitions. [2021-12-21 15:10:04,691 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 94 transitions, 298 flow [2021-12-21 15:10:04,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-21 15:10:04,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2021-12-21 15:10:04,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 400 transitions. [2021-12-21 15:10:04,693 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7017543859649122 [2021-12-21 15:10:04,694 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 400 transitions. [2021-12-21 15:10:04,694 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 400 transitions. [2021-12-21 15:10:04,694 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-21 15:10:04,694 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 400 transitions. [2021-12-21 15:10:04,695 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 66.66666666666667) internal successors, (400), 6 states have internal predecessors, (400), 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) [2021-12-21 15:10:04,696 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 95.0) internal successors, (665), 7 states have internal predecessors, (665), 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) [2021-12-21 15:10:04,696 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 95.0) internal successors, (665), 7 states have internal predecessors, (665), 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) [2021-12-21 15:10:04,697 INFO L186 Difference]: Start difference. First operand has 84 places, 80 transitions, 178 flow. Second operand 6 states and 400 transitions. [2021-12-21 15:10:04,697 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 94 transitions, 298 flow [2021-12-21 15:10:04,699 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 94 transitions, 298 flow, removed 0 selfloop flow, removed 0 redundant places. [2021-12-21 15:10:04,701 INFO L242 Difference]: Finished difference. Result has 89 places, 83 transitions, 220 flow [2021-12-21 15:10:04,701 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=95, PETRI_DIFFERENCE_MINUEND_FLOW=178, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=220, PETRI_PLACES=89, PETRI_TRANSITIONS=83} [2021-12-21 15:10:04,702 INFO L334 CegarLoopForPetriNet]: 83 programPoint places, 6 predicate places. [2021-12-21 15:10:04,702 INFO L470 AbstractCegarLoop]: Abstraction has has 89 places, 83 transitions, 220 flow [2021-12-21 15:10:04,702 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 61.166666666666664) internal successors, (367), 6 states have internal predecessors, (367), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 15:10:04,702 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-21 15:10:04,702 INFO L254 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 15:10:04,702 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-12-21 15:10:04,703 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION] === [2021-12-21 15:10:04,703 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 15:10:04,703 INFO L85 PathProgramCache]: Analyzing trace with hash 618023769, now seen corresponding path program 1 times [2021-12-21 15:10:04,703 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 15:10:04,703 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1264596709] [2021-12-21 15:10:04,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 15:10:04,704 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 15:10:04,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-21 15:10:04,724 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-21 15:10:04,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-21 15:10:04,750 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-21 15:10:04,750 INFO L628 BasicCegarLoop]: Counterexample is feasible [2021-12-21 15:10:04,751 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATION (1 of 2 remaining) [2021-12-21 15:10:04,751 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2021-12-21 15:10:04,751 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-12-21 15:10:04,751 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2021-12-21 15:10:04,752 WARN L234 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2021-12-21 15:10:04,752 INFO L513 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2021-12-21 15:10:04,758 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of3ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:04,758 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of3ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:04,758 WARN L322 ript$VariableManager]: TermVariabe thrThread1of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:04,758 WARN L322 ript$VariableManager]: TermVariabe thrThread1of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:04,759 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of3ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:04,759 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of3ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:04,759 WARN L322 ript$VariableManager]: TermVariabe thrThread1of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:04,759 WARN L322 ript$VariableManager]: TermVariabe thrThread1of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:04,759 WARN L322 ript$VariableManager]: TermVariabe thrThread1of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:04,759 WARN L322 ript$VariableManager]: TermVariabe thrThread1of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:04,759 WARN L322 ript$VariableManager]: TermVariabe thrThread1of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:04,760 WARN L322 ript$VariableManager]: TermVariabe thrThread1of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:04,760 WARN L322 ript$VariableManager]: TermVariabe thrThread1of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:04,760 WARN L322 ript$VariableManager]: TermVariabe thrThread1of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:04,760 WARN L322 ript$VariableManager]: TermVariabe |thrThread3of3ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:04,760 WARN L322 ript$VariableManager]: TermVariabe |thrThread3of3ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:04,760 WARN L322 ript$VariableManager]: TermVariabe thrThread3of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:04,760 WARN L322 ript$VariableManager]: TermVariabe thrThread3of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:04,761 WARN L322 ript$VariableManager]: TermVariabe |thrThread3of3ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:04,761 WARN L322 ript$VariableManager]: TermVariabe |thrThread3of3ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:04,761 WARN L322 ript$VariableManager]: TermVariabe thrThread3of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:04,761 WARN L322 ript$VariableManager]: TermVariabe thrThread3of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:04,761 WARN L322 ript$VariableManager]: TermVariabe thrThread3of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:04,761 WARN L322 ript$VariableManager]: TermVariabe thrThread3of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:04,761 WARN L322 ript$VariableManager]: TermVariabe thrThread3of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:04,762 WARN L322 ript$VariableManager]: TermVariabe thrThread3of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:04,762 WARN L322 ript$VariableManager]: TermVariabe thrThread3of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:04,762 WARN L322 ript$VariableManager]: TermVariabe thrThread3of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:04,762 WARN L322 ript$VariableManager]: TermVariabe |thrThread2of3ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:04,762 WARN L322 ript$VariableManager]: TermVariabe |thrThread2of3ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:04,762 WARN L322 ript$VariableManager]: TermVariabe thrThread2of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:04,762 WARN L322 ript$VariableManager]: TermVariabe thrThread2of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:04,763 WARN L322 ript$VariableManager]: TermVariabe |thrThread2of3ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:04,763 WARN L322 ript$VariableManager]: TermVariabe |thrThread2of3ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:04,763 WARN L322 ript$VariableManager]: TermVariabe thrThread2of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:04,763 WARN L322 ript$VariableManager]: TermVariabe thrThread2of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:04,763 WARN L322 ript$VariableManager]: TermVariabe thrThread2of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:04,763 WARN L322 ript$VariableManager]: TermVariabe thrThread2of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:04,763 WARN L322 ript$VariableManager]: TermVariabe thrThread2of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:04,764 WARN L322 ript$VariableManager]: TermVariabe thrThread2of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:04,764 WARN L322 ript$VariableManager]: TermVariabe thrThread2of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:04,764 WARN L322 ript$VariableManager]: TermVariabe thrThread2of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:04,764 WARN L322 ript$VariableManager]: TermVariabe thrThread1of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:04,764 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:04,764 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:04,765 WARN L322 ript$VariableManager]: TermVariabe thrThread1of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:04,765 WARN L322 ript$VariableManager]: TermVariabe thrThread1of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:04,765 WARN L322 ript$VariableManager]: TermVariabe |thrThread2of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:04,765 WARN L322 ript$VariableManager]: TermVariabe thrThread2of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:04,765 WARN L322 ript$VariableManager]: TermVariabe |thrThread2of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:04,765 WARN L322 ript$VariableManager]: TermVariabe thrThread2of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:04,766 WARN L322 ript$VariableManager]: TermVariabe thrThread2of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:04,766 WARN L322 ript$VariableManager]: TermVariabe |thrThread3of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:04,766 WARN L322 ript$VariableManager]: TermVariabe |thrThread3of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:04,766 WARN L322 ript$VariableManager]: TermVariabe thrThread3of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:04,766 WARN L322 ript$VariableManager]: TermVariabe thrThread3of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:04,766 WARN L322 ript$VariableManager]: TermVariabe thrThread3of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:04,767 INFO L148 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2021-12-21 15:10:04,768 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-21 15:10:04,769 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=true, 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 [2021-12-21 15:10:04,769 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-12-21 15:10:04,770 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 100 places, 102 transitions, 234 flow [2021-12-21 15:10:04,788 INFO L129 PetriNetUnfolder]: 45/383 cut-off events. [2021-12-21 15:10:04,788 INFO L130 PetriNetUnfolder]: For 19/19 co-relation queries the response was YES. [2021-12-21 15:10:04,789 INFO L84 FinitePrefix]: Finished finitePrefix Result has 411 conditions, 383 events. 45/383 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 1193 event pairs, 1 based on Foata normal form. 0/326 useless extension candidates. Maximal degree in co-relation 225. Up to 16 conditions per place. [2021-12-21 15:10:04,789 INFO L82 GeneralOperation]: Start removeDead. Operand has 100 places, 102 transitions, 234 flow [2021-12-21 15:10:04,790 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 91 places, 92 transitions, 214 flow [2021-12-21 15:10:04,793 INFO L129 PetriNetUnfolder]: 6/74 cut-off events. [2021-12-21 15:10:04,793 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-12-21 15:10:04,794 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-21 15:10:04,794 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] [2021-12-21 15:10:04,794 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION] === [2021-12-21 15:10:04,794 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 15:10:04,794 INFO L85 PathProgramCache]: Analyzing trace with hash -783703138, now seen corresponding path program 1 times [2021-12-21 15:10:04,794 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 15:10:04,795 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1843421345] [2021-12-21 15:10:04,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 15:10:04,795 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 15:10:04,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:10:04,812 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 15:10:04,813 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 15:10:04,813 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1843421345] [2021-12-21 15:10:04,813 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1843421345] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 15:10:04,813 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 15:10:04,813 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-21 15:10:04,814 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1906569046] [2021-12-21 15:10:04,814 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 15:10:04,814 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-12-21 15:10:04,814 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 15:10:04,815 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-12-21 15:10:04,815 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-12-21 15:10:04,815 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 90 out of 102 [2021-12-21 15:10:04,816 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 92 transitions, 214 flow. Second operand has 2 states, 2 states have (on average 91.0) internal successors, (182), 2 states have internal predecessors, (182), 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) [2021-12-21 15:10:04,816 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-21 15:10:04,816 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 90 of 102 [2021-12-21 15:10:04,816 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-21 15:10:04,838 INFO L129 PetriNetUnfolder]: 16/282 cut-off events. [2021-12-21 15:10:04,839 INFO L130 PetriNetUnfolder]: For 49/49 co-relation queries the response was YES. [2021-12-21 15:10:04,839 INFO L84 FinitePrefix]: Finished finitePrefix Result has 326 conditions, 282 events. 16/282 cut-off events. For 49/49 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 769 event pairs, 1 based on Foata normal form. 21/282 useless extension candidates. Maximal degree in co-relation 179. Up to 16 conditions per place. [2021-12-21 15:10:04,840 INFO L132 encePairwiseOnDemand]: 98/102 looper letters, 6 selfloop transitions, 0 changer transitions 1/88 dead transitions. [2021-12-21 15:10:04,840 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 88 transitions, 218 flow [2021-12-21 15:10:04,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-12-21 15:10:04,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2021-12-21 15:10:04,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 190 transitions. [2021-12-21 15:10:04,841 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.9313725490196079 [2021-12-21 15:10:04,841 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 190 transitions. [2021-12-21 15:10:04,841 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 190 transitions. [2021-12-21 15:10:04,842 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-21 15:10:04,842 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 190 transitions. [2021-12-21 15:10:04,842 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 95.0) internal successors, (190), 2 states have internal predecessors, (190), 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) [2021-12-21 15:10:04,843 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 102.0) internal successors, (306), 3 states have internal predecessors, (306), 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) [2021-12-21 15:10:04,843 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 102.0) internal successors, (306), 3 states have internal predecessors, (306), 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) [2021-12-21 15:10:04,843 INFO L186 Difference]: Start difference. First operand has 91 places, 92 transitions, 214 flow. Second operand 2 states and 190 transitions. [2021-12-21 15:10:04,843 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 88 transitions, 218 flow [2021-12-21 15:10:04,844 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 88 transitions, 218 flow, removed 0 selfloop flow, removed 0 redundant places. [2021-12-21 15:10:04,845 INFO L242 Difference]: Finished difference. Result has 92 places, 87 transitions, 204 flow [2021-12-21 15:10:04,845 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=102, PETRI_DIFFERENCE_MINUEND_FLOW=206, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=88, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=204, PETRI_PLACES=92, PETRI_TRANSITIONS=87} [2021-12-21 15:10:04,846 INFO L334 CegarLoopForPetriNet]: 91 programPoint places, 1 predicate places. [2021-12-21 15:10:04,846 INFO L470 AbstractCegarLoop]: Abstraction has has 92 places, 87 transitions, 204 flow [2021-12-21 15:10:04,846 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 91.0) internal successors, (182), 2 states have internal predecessors, (182), 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) [2021-12-21 15:10:04,846 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-21 15:10:04,846 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] [2021-12-21 15:10:04,846 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-12-21 15:10:04,847 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION] === [2021-12-21 15:10:04,847 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 15:10:04,847 INFO L85 PathProgramCache]: Analyzing trace with hash 232883262, now seen corresponding path program 1 times [2021-12-21 15:10:04,847 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 15:10:04,847 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1780490515] [2021-12-21 15:10:04,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 15:10:04,848 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 15:10:04,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:10:04,897 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 15:10:04,897 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 15:10:04,898 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1780490515] [2021-12-21 15:10:04,898 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1780490515] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 15:10:04,898 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 15:10:04,898 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-21 15:10:04,898 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1236890656] [2021-12-21 15:10:04,898 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 15:10:04,899 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-21 15:10:04,899 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 15:10:04,899 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-21 15:10:04,899 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2021-12-21 15:10:04,900 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 64 out of 102 [2021-12-21 15:10:04,900 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 87 transitions, 204 flow. Second operand has 6 states, 6 states have (on average 66.16666666666667) internal successors, (397), 6 states have internal predecessors, (397), 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) [2021-12-21 15:10:04,900 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-21 15:10:04,900 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 64 of 102 [2021-12-21 15:10:04,901 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-21 15:10:04,996 INFO L129 PetriNetUnfolder]: 15/320 cut-off events. [2021-12-21 15:10:04,996 INFO L130 PetriNetUnfolder]: For 22/22 co-relation queries the response was YES. [2021-12-21 15:10:04,997 INFO L84 FinitePrefix]: Finished finitePrefix Result has 516 conditions, 320 events. 15/320 cut-off events. For 22/22 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 1092 event pairs, 0 based on Foata normal form. 0/303 useless extension candidates. Maximal degree in co-relation 510. Up to 103 conditions per place. [2021-12-21 15:10:04,998 INFO L132 encePairwiseOnDemand]: 90/102 looper letters, 37 selfloop transitions, 9 changer transitions 0/102 dead transitions. [2021-12-21 15:10:04,998 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 102 transitions, 335 flow [2021-12-21 15:10:04,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-21 15:10:04,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2021-12-21 15:10:05,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 433 transitions. [2021-12-21 15:10:05,000 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7075163398692811 [2021-12-21 15:10:05,001 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 433 transitions. [2021-12-21 15:10:05,001 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 433 transitions. [2021-12-21 15:10:05,001 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-21 15:10:05,001 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 433 transitions. [2021-12-21 15:10:05,002 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 72.16666666666667) internal successors, (433), 6 states have internal predecessors, (433), 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) [2021-12-21 15:10:05,003 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 102.0) internal successors, (714), 7 states have internal predecessors, (714), 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) [2021-12-21 15:10:05,003 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 102.0) internal successors, (714), 7 states have internal predecessors, (714), 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) [2021-12-21 15:10:05,004 INFO L186 Difference]: Start difference. First operand has 92 places, 87 transitions, 204 flow. Second operand 6 states and 433 transitions. [2021-12-21 15:10:05,004 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 102 transitions, 335 flow [2021-12-21 15:10:05,005 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 102 transitions, 335 flow, removed 0 selfloop flow, removed 0 redundant places. [2021-12-21 15:10:05,008 INFO L242 Difference]: Finished difference. Result has 97 places, 90 transitions, 246 flow [2021-12-21 15:10:05,008 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=102, PETRI_DIFFERENCE_MINUEND_FLOW=204, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=87, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=246, PETRI_PLACES=97, PETRI_TRANSITIONS=90} [2021-12-21 15:10:05,009 INFO L334 CegarLoopForPetriNet]: 91 programPoint places, 6 predicate places. [2021-12-21 15:10:05,009 INFO L470 AbstractCegarLoop]: Abstraction has has 97 places, 90 transitions, 246 flow [2021-12-21 15:10:05,010 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 66.16666666666667) internal successors, (397), 6 states have internal predecessors, (397), 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) [2021-12-21 15:10:05,010 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-21 15:10:05,010 INFO L254 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 15:10:05,010 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-12-21 15:10:05,010 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION] === [2021-12-21 15:10:05,011 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 15:10:05,011 INFO L85 PathProgramCache]: Analyzing trace with hash 1470109151, now seen corresponding path program 1 times [2021-12-21 15:10:05,011 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 15:10:05,011 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [607785164] [2021-12-21 15:10:05,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 15:10:05,012 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 15:10:05,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-21 15:10:05,055 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-21 15:10:05,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-21 15:10:05,087 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-21 15:10:05,091 INFO L628 BasicCegarLoop]: Counterexample is feasible [2021-12-21 15:10:05,092 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATION (1 of 2 remaining) [2021-12-21 15:10:05,092 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2021-12-21 15:10:05,092 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-12-21 15:10:05,092 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2021-12-21 15:10:05,093 WARN L234 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2021-12-21 15:10:05,093 INFO L513 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2021-12-21 15:10:05,103 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of4ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:05,103 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of4ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:05,103 WARN L322 ript$VariableManager]: TermVariabe thrThread1of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:05,103 WARN L322 ript$VariableManager]: TermVariabe thrThread1of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:05,104 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of4ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:05,104 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of4ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:05,104 WARN L322 ript$VariableManager]: TermVariabe thrThread1of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:05,104 WARN L322 ript$VariableManager]: TermVariabe thrThread1of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:05,104 WARN L322 ript$VariableManager]: TermVariabe thrThread1of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:05,104 WARN L322 ript$VariableManager]: TermVariabe thrThread1of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:05,104 WARN L322 ript$VariableManager]: TermVariabe thrThread1of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:05,105 WARN L322 ript$VariableManager]: TermVariabe thrThread1of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:05,105 WARN L322 ript$VariableManager]: TermVariabe thrThread1of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:05,105 WARN L322 ript$VariableManager]: TermVariabe thrThread1of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:05,105 WARN L322 ript$VariableManager]: TermVariabe |thrThread2of4ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:05,105 WARN L322 ript$VariableManager]: TermVariabe |thrThread2of4ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:05,106 WARN L322 ript$VariableManager]: TermVariabe thrThread2of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:05,106 WARN L322 ript$VariableManager]: TermVariabe thrThread2of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:05,106 WARN L322 ript$VariableManager]: TermVariabe |thrThread2of4ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:05,106 WARN L322 ript$VariableManager]: TermVariabe |thrThread2of4ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:05,106 WARN L322 ript$VariableManager]: TermVariabe thrThread2of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:05,106 WARN L322 ript$VariableManager]: TermVariabe thrThread2of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:05,106 WARN L322 ript$VariableManager]: TermVariabe thrThread2of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:05,107 WARN L322 ript$VariableManager]: TermVariabe thrThread2of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:05,107 WARN L322 ript$VariableManager]: TermVariabe thrThread2of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:05,107 WARN L322 ript$VariableManager]: TermVariabe thrThread2of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:05,107 WARN L322 ript$VariableManager]: TermVariabe thrThread2of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:05,107 WARN L322 ript$VariableManager]: TermVariabe thrThread2of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:05,107 WARN L322 ript$VariableManager]: TermVariabe |thrThread3of4ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:05,108 WARN L322 ript$VariableManager]: TermVariabe |thrThread3of4ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:05,108 WARN L322 ript$VariableManager]: TermVariabe thrThread3of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:05,108 WARN L322 ript$VariableManager]: TermVariabe thrThread3of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:05,108 WARN L322 ript$VariableManager]: TermVariabe |thrThread3of4ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:05,108 WARN L322 ript$VariableManager]: TermVariabe |thrThread3of4ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:05,108 WARN L322 ript$VariableManager]: TermVariabe thrThread3of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:05,108 WARN L322 ript$VariableManager]: TermVariabe thrThread3of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:05,109 WARN L322 ript$VariableManager]: TermVariabe thrThread3of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:05,109 WARN L322 ript$VariableManager]: TermVariabe thrThread3of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:05,109 WARN L322 ript$VariableManager]: TermVariabe thrThread3of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:05,109 WARN L322 ript$VariableManager]: TermVariabe thrThread3of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:05,109 WARN L322 ript$VariableManager]: TermVariabe thrThread3of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:05,109 WARN L322 ript$VariableManager]: TermVariabe thrThread3of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:05,110 WARN L322 ript$VariableManager]: TermVariabe |thrThread4of4ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:05,110 WARN L322 ript$VariableManager]: TermVariabe |thrThread4of4ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:05,110 WARN L322 ript$VariableManager]: TermVariabe thrThread4of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:05,110 WARN L322 ript$VariableManager]: TermVariabe thrThread4of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:05,110 WARN L322 ript$VariableManager]: TermVariabe |thrThread4of4ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:05,110 WARN L322 ript$VariableManager]: TermVariabe |thrThread4of4ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:05,110 WARN L322 ript$VariableManager]: TermVariabe thrThread4of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:05,110 WARN L322 ript$VariableManager]: TermVariabe thrThread4of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:05,111 WARN L322 ript$VariableManager]: TermVariabe thrThread4of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:05,111 WARN L322 ript$VariableManager]: TermVariabe thrThread4of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:05,111 WARN L322 ript$VariableManager]: TermVariabe thrThread4of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:05,111 WARN L322 ript$VariableManager]: TermVariabe thrThread4of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:05,111 WARN L322 ript$VariableManager]: TermVariabe thrThread4of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:05,111 WARN L322 ript$VariableManager]: TermVariabe thrThread4of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:05,112 WARN L322 ript$VariableManager]: TermVariabe thrThread1of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:05,112 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:05,112 WARN L322 ript$VariableManager]: TermVariabe thrThread1of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:05,112 WARN L322 ript$VariableManager]: TermVariabe thrThread1of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:05,112 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:05,113 WARN L322 ript$VariableManager]: TermVariabe |thrThread2of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:05,113 WARN L322 ript$VariableManager]: TermVariabe thrThread2of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:05,113 WARN L322 ript$VariableManager]: TermVariabe thrThread2of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:05,113 WARN L322 ript$VariableManager]: TermVariabe thrThread2of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:05,113 WARN L322 ript$VariableManager]: TermVariabe |thrThread2of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:05,114 WARN L322 ript$VariableManager]: TermVariabe |thrThread3of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:05,114 WARN L322 ript$VariableManager]: TermVariabe thrThread3of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:05,114 WARN L322 ript$VariableManager]: TermVariabe thrThread3of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:05,114 WARN L322 ript$VariableManager]: TermVariabe thrThread3of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:05,114 WARN L322 ript$VariableManager]: TermVariabe |thrThread3of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:05,114 WARN L322 ript$VariableManager]: TermVariabe thrThread4of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:05,115 WARN L322 ript$VariableManager]: TermVariabe |thrThread4of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:05,115 WARN L322 ript$VariableManager]: TermVariabe thrThread4of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:05,115 WARN L322 ript$VariableManager]: TermVariabe thrThread4of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:05,115 WARN L322 ript$VariableManager]: TermVariabe |thrThread4of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:05,127 INFO L148 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2021-12-21 15:10:05,129 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-21 15:10:05,130 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=true, 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 [2021-12-21 15:10:05,130 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-12-21 15:10:05,131 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 108 places, 109 transitions, 262 flow [2021-12-21 15:10:05,174 INFO L129 PetriNetUnfolder]: 91/701 cut-off events. [2021-12-21 15:10:05,175 INFO L130 PetriNetUnfolder]: For 48/48 co-relation queries the response was YES. [2021-12-21 15:10:05,176 INFO L84 FinitePrefix]: Finished finitePrefix Result has 756 conditions, 701 events. 91/701 cut-off events. For 48/48 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 3012 event pairs, 6 based on Foata normal form. 0/594 useless extension candidates. Maximal degree in co-relation 403. Up to 32 conditions per place. [2021-12-21 15:10:05,176 INFO L82 GeneralOperation]: Start removeDead. Operand has 108 places, 109 transitions, 262 flow [2021-12-21 15:10:05,178 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 99 places, 99 transitions, 242 flow [2021-12-21 15:10:05,181 INFO L129 PetriNetUnfolder]: 6/74 cut-off events. [2021-12-21 15:10:05,181 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-12-21 15:10:05,181 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-21 15:10:05,181 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] [2021-12-21 15:10:05,182 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION] === [2021-12-21 15:10:05,182 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 15:10:05,182 INFO L85 PathProgramCache]: Analyzing trace with hash -888353237, now seen corresponding path program 1 times [2021-12-21 15:10:05,182 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 15:10:05,182 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1662129009] [2021-12-21 15:10:05,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 15:10:05,183 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 15:10:05,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:10:05,197 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 15:10:05,197 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 15:10:05,197 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1662129009] [2021-12-21 15:10:05,197 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1662129009] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 15:10:05,197 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 15:10:05,198 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-21 15:10:05,198 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1748317238] [2021-12-21 15:10:05,198 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 15:10:05,198 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-12-21 15:10:05,198 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 15:10:05,199 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-12-21 15:10:05,199 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-12-21 15:10:05,199 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 95 out of 109 [2021-12-21 15:10:05,199 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 99 transitions, 242 flow. Second operand has 2 states, 2 states have (on average 96.0) internal successors, (192), 2 states have internal predecessors, (192), 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) [2021-12-21 15:10:05,199 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-21 15:10:05,199 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 95 of 109 [2021-12-21 15:10:05,200 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-21 15:10:05,236 INFO L129 PetriNetUnfolder]: 37/503 cut-off events. [2021-12-21 15:10:05,236 INFO L130 PetriNetUnfolder]: For 122/122 co-relation queries the response was YES. [2021-12-21 15:10:05,237 INFO L84 FinitePrefix]: Finished finitePrefix Result has 595 conditions, 503 events. 37/503 cut-off events. For 122/122 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 2010 event pairs, 6 based on Foata normal form. 38/503 useless extension candidates. Maximal degree in co-relation 317. Up to 37 conditions per place. [2021-12-21 15:10:05,238 INFO L132 encePairwiseOnDemand]: 105/109 looper letters, 8 selfloop transitions, 0 changer transitions 1/95 dead transitions. [2021-12-21 15:10:05,238 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 95 transitions, 250 flow [2021-12-21 15:10:05,238 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-12-21 15:10:05,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2021-12-21 15:10:05,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 202 transitions. [2021-12-21 15:10:05,239 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.926605504587156 [2021-12-21 15:10:05,239 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 202 transitions. [2021-12-21 15:10:05,239 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 202 transitions. [2021-12-21 15:10:05,240 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-21 15:10:05,240 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 202 transitions. [2021-12-21 15:10:05,240 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 101.0) internal successors, (202), 2 states have internal predecessors, (202), 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) [2021-12-21 15:10:05,241 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 109.0) internal successors, (327), 3 states have internal predecessors, (327), 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) [2021-12-21 15:10:05,241 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 109.0) internal successors, (327), 3 states have internal predecessors, (327), 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) [2021-12-21 15:10:05,241 INFO L186 Difference]: Start difference. First operand has 99 places, 99 transitions, 242 flow. Second operand 2 states and 202 transitions. [2021-12-21 15:10:05,241 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 95 transitions, 250 flow [2021-12-21 15:10:05,242 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 95 transitions, 250 flow, removed 0 selfloop flow, removed 0 redundant places. [2021-12-21 15:10:05,243 INFO L242 Difference]: Finished difference. Result has 100 places, 94 transitions, 232 flow [2021-12-21 15:10:05,243 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=109, PETRI_DIFFERENCE_MINUEND_FLOW=234, PETRI_DIFFERENCE_MINUEND_PLACES=99, 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=2, PETRI_FLOW=232, PETRI_PLACES=100, PETRI_TRANSITIONS=94} [2021-12-21 15:10:05,243 INFO L334 CegarLoopForPetriNet]: 99 programPoint places, 1 predicate places. [2021-12-21 15:10:05,244 INFO L470 AbstractCegarLoop]: Abstraction has has 100 places, 94 transitions, 232 flow [2021-12-21 15:10:05,244 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 96.0) internal successors, (192), 2 states have internal predecessors, (192), 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) [2021-12-21 15:10:05,244 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-21 15:10:05,244 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] [2021-12-21 15:10:05,244 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-12-21 15:10:05,244 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION] === [2021-12-21 15:10:05,245 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 15:10:05,245 INFO L85 PathProgramCache]: Analyzing trace with hash -197363061, now seen corresponding path program 1 times [2021-12-21 15:10:05,245 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 15:10:05,245 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [134108981] [2021-12-21 15:10:05,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 15:10:05,245 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 15:10:05,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:10:05,288 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 15:10:05,289 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 15:10:05,289 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [134108981] [2021-12-21 15:10:05,289 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [134108981] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 15:10:05,289 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 15:10:05,289 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-21 15:10:05,289 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [705034535] [2021-12-21 15:10:05,290 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 15:10:05,290 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-21 15:10:05,290 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 15:10:05,290 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-21 15:10:05,290 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2021-12-21 15:10:05,291 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 69 out of 109 [2021-12-21 15:10:05,291 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 94 transitions, 232 flow. Second operand has 6 states, 6 states have (on average 71.16666666666667) internal successors, (427), 6 states have internal predecessors, (427), 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) [2021-12-21 15:10:05,292 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-21 15:10:05,292 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 69 of 109 [2021-12-21 15:10:05,292 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-21 15:10:05,398 INFO L129 PetriNetUnfolder]: 38/603 cut-off events. [2021-12-21 15:10:05,398 INFO L130 PetriNetUnfolder]: For 54/54 co-relation queries the response was YES. [2021-12-21 15:10:05,400 INFO L84 FinitePrefix]: Finished finitePrefix Result has 987 conditions, 603 events. 38/603 cut-off events. For 54/54 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 2859 event pairs, 1 based on Foata normal form. 0/569 useless extension candidates. Maximal degree in co-relation 980. Up to 218 conditions per place. [2021-12-21 15:10:05,401 INFO L132 encePairwiseOnDemand]: 97/109 looper letters, 40 selfloop transitions, 9 changer transitions 0/110 dead transitions. [2021-12-21 15:10:05,401 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 110 transitions, 374 flow [2021-12-21 15:10:05,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-21 15:10:05,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2021-12-21 15:10:05,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 466 transitions. [2021-12-21 15:10:05,402 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7125382262996942 [2021-12-21 15:10:05,403 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 466 transitions. [2021-12-21 15:10:05,403 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 466 transitions. [2021-12-21 15:10:05,403 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-21 15:10:05,403 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 466 transitions. [2021-12-21 15:10:05,404 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 77.66666666666667) internal successors, (466), 6 states have internal predecessors, (466), 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) [2021-12-21 15:10:05,405 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 109.0) internal successors, (763), 7 states have internal predecessors, (763), 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) [2021-12-21 15:10:05,405 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 109.0) internal successors, (763), 7 states have internal predecessors, (763), 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) [2021-12-21 15:10:05,405 INFO L186 Difference]: Start difference. First operand has 100 places, 94 transitions, 232 flow. Second operand 6 states and 466 transitions. [2021-12-21 15:10:05,405 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 104 places, 110 transitions, 374 flow [2021-12-21 15:10:05,406 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 104 places, 110 transitions, 374 flow, removed 0 selfloop flow, removed 0 redundant places. [2021-12-21 15:10:05,407 INFO L242 Difference]: Finished difference. Result has 105 places, 97 transitions, 274 flow [2021-12-21 15:10:05,408 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=109, PETRI_DIFFERENCE_MINUEND_FLOW=232, PETRI_DIFFERENCE_MINUEND_PLACES=99, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=94, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=85, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=274, PETRI_PLACES=105, PETRI_TRANSITIONS=97} [2021-12-21 15:10:05,408 INFO L334 CegarLoopForPetriNet]: 99 programPoint places, 6 predicate places. [2021-12-21 15:10:05,408 INFO L470 AbstractCegarLoop]: Abstraction has has 105 places, 97 transitions, 274 flow [2021-12-21 15:10:05,408 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 71.16666666666667) internal successors, (427), 6 states have internal predecessors, (427), 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) [2021-12-21 15:10:05,409 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-21 15:10:05,409 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] [2021-12-21 15:10:05,409 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-12-21 15:10:05,409 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION] === [2021-12-21 15:10:05,409 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 15:10:05,409 INFO L85 PathProgramCache]: Analyzing trace with hash 1092255810, now seen corresponding path program 1 times [2021-12-21 15:10:05,410 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 15:10:05,410 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [173013180] [2021-12-21 15:10:05,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 15:10:05,410 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 15:10:05,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:10:05,480 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-12-21 15:10:05,481 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 15:10:05,481 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [173013180] [2021-12-21 15:10:05,481 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [173013180] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-21 15:10:05,481 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [841575749] [2021-12-21 15:10:05,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 15:10:05,482 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 15:10:05,482 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 15:10:05,483 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-21 15:10:05,484 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-12-21 15:10:05,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:10:05,556 INFO L263 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 9 conjunts are in the unsatisfiable core [2021-12-21 15:10:05,558 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 15:10:05,843 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-12-21 15:10:05,843 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-21 15:10:06,006 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-12-21 15:10:06,006 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [841575749] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-21 15:10:06,006 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-21 15:10:06,007 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 20 [2021-12-21 15:10:06,007 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1724883847] [2021-12-21 15:10:06,007 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-21 15:10:06,007 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-12-21 15:10:06,007 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 15:10:06,008 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-12-21 15:10:06,008 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=104, Invalid=276, Unknown=0, NotChecked=0, Total=380 [2021-12-21 15:10:06,009 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 109 [2021-12-21 15:10:06,010 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 105 places, 97 transitions, 274 flow. Second operand has 20 states, 20 states have (on average 70.6) internal successors, (1412), 20 states have internal predecessors, (1412), 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) [2021-12-21 15:10:06,011 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-21 15:10:06,011 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 109 [2021-12-21 15:10:06,011 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-21 15:10:06,435 INFO L129 PetriNetUnfolder]: 35/583 cut-off events. [2021-12-21 15:10:06,435 INFO L130 PetriNetUnfolder]: For 130/130 co-relation queries the response was YES. [2021-12-21 15:10:06,436 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1081 conditions, 583 events. 35/583 cut-off events. For 130/130 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 2947 event pairs, 2 based on Foata normal form. 2/585 useless extension candidates. Maximal degree in co-relation 1072. Up to 125 conditions per place. [2021-12-21 15:10:06,437 INFO L132 encePairwiseOnDemand]: 94/109 looper letters, 37 selfloop transitions, 20 changer transitions 0/117 dead transitions. [2021-12-21 15:10:06,437 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 116 places, 117 transitions, 442 flow [2021-12-21 15:10:06,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-12-21 15:10:06,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2021-12-21 15:10:06,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 875 transitions. [2021-12-21 15:10:06,440 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.668960244648318 [2021-12-21 15:10:06,440 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 875 transitions. [2021-12-21 15:10:06,440 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 875 transitions. [2021-12-21 15:10:06,440 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-21 15:10:06,440 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 875 transitions. [2021-12-21 15:10:06,442 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 72.91666666666667) internal successors, (875), 12 states have internal predecessors, (875), 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) [2021-12-21 15:10:06,443 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 109.0) internal successors, (1417), 13 states have internal predecessors, (1417), 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) [2021-12-21 15:10:06,444 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 109.0) internal successors, (1417), 13 states have internal predecessors, (1417), 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) [2021-12-21 15:10:06,444 INFO L186 Difference]: Start difference. First operand has 105 places, 97 transitions, 274 flow. Second operand 12 states and 875 transitions. [2021-12-21 15:10:06,444 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 116 places, 117 transitions, 442 flow [2021-12-21 15:10:06,445 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 112 places, 117 transitions, 430 flow, removed 0 selfloop flow, removed 4 redundant places. [2021-12-21 15:10:06,446 INFO L242 Difference]: Finished difference. Result has 115 places, 105 transitions, 355 flow [2021-12-21 15:10:06,447 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=109, PETRI_DIFFERENCE_MINUEND_FLOW=262, PETRI_DIFFERENCE_MINUEND_PLACES=101, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=97, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=355, PETRI_PLACES=115, PETRI_TRANSITIONS=105} [2021-12-21 15:10:06,447 INFO L334 CegarLoopForPetriNet]: 99 programPoint places, 16 predicate places. [2021-12-21 15:10:06,447 INFO L470 AbstractCegarLoop]: Abstraction has has 115 places, 105 transitions, 355 flow [2021-12-21 15:10:06,448 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 70.6) internal successors, (1412), 20 states have internal predecessors, (1412), 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) [2021-12-21 15:10:06,448 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-21 15:10:06,448 INFO L254 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 15:10:06,466 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2021-12-21 15:10:06,668 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2021-12-21 15:10:06,668 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION] === [2021-12-21 15:10:06,668 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 15:10:06,669 INFO L85 PathProgramCache]: Analyzing trace with hash -1090444432, now seen corresponding path program 1 times [2021-12-21 15:10:06,669 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 15:10:06,669 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [813575027] [2021-12-21 15:10:06,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 15:10:06,669 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 15:10:06,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-21 15:10:06,700 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-21 15:10:06,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-21 15:10:06,726 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-21 15:10:06,727 INFO L628 BasicCegarLoop]: Counterexample is feasible [2021-12-21 15:10:06,727 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATION (1 of 2 remaining) [2021-12-21 15:10:06,728 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2021-12-21 15:10:06,728 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-12-21 15:10:06,728 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2021-12-21 15:10:06,728 WARN L234 ceAbstractionStarter]: 4 thread instances were not sufficient, I will increase this number and restart the analysis [2021-12-21 15:10:06,728 INFO L513 ceAbstractionStarter]: Constructing petrified ICFG for 5 thread instances. [2021-12-21 15:10:06,740 WARN L322 ript$VariableManager]: TermVariabe |thrThread4of5ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:06,740 WARN L322 ript$VariableManager]: TermVariabe |thrThread4of5ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:06,740 WARN L322 ript$VariableManager]: TermVariabe thrThread4of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:06,740 WARN L322 ript$VariableManager]: TermVariabe thrThread4of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:06,741 WARN L322 ript$VariableManager]: TermVariabe |thrThread4of5ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:06,741 WARN L322 ript$VariableManager]: TermVariabe |thrThread4of5ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:06,741 WARN L322 ript$VariableManager]: TermVariabe thrThread4of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:06,741 WARN L322 ript$VariableManager]: TermVariabe thrThread4of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:06,741 WARN L322 ript$VariableManager]: TermVariabe thrThread4of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:06,741 WARN L322 ript$VariableManager]: TermVariabe thrThread4of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:06,741 WARN L322 ript$VariableManager]: TermVariabe thrThread4of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:06,742 WARN L322 ript$VariableManager]: TermVariabe thrThread4of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:06,742 WARN L322 ript$VariableManager]: TermVariabe thrThread4of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:06,742 WARN L322 ript$VariableManager]: TermVariabe thrThread4of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:06,742 WARN L322 ript$VariableManager]: TermVariabe |thrThread5of5ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:06,742 WARN L322 ript$VariableManager]: TermVariabe |thrThread5of5ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:06,742 WARN L322 ript$VariableManager]: TermVariabe thrThread5of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:06,744 WARN L322 ript$VariableManager]: TermVariabe thrThread5of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:06,744 WARN L322 ript$VariableManager]: TermVariabe |thrThread5of5ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:06,744 WARN L322 ript$VariableManager]: TermVariabe |thrThread5of5ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:06,744 WARN L322 ript$VariableManager]: TermVariabe thrThread5of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:06,744 WARN L322 ript$VariableManager]: TermVariabe thrThread5of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:06,744 WARN L322 ript$VariableManager]: TermVariabe thrThread5of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:06,744 WARN L322 ript$VariableManager]: TermVariabe thrThread5of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:06,745 WARN L322 ript$VariableManager]: TermVariabe thrThread5of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:06,745 WARN L322 ript$VariableManager]: TermVariabe thrThread5of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:06,745 WARN L322 ript$VariableManager]: TermVariabe thrThread5of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:06,745 WARN L322 ript$VariableManager]: TermVariabe thrThread5of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:06,745 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of5ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:06,745 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of5ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:06,745 WARN L322 ript$VariableManager]: TermVariabe thrThread1of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:06,746 WARN L322 ript$VariableManager]: TermVariabe thrThread1of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:06,746 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of5ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:06,746 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of5ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:06,746 WARN L322 ript$VariableManager]: TermVariabe thrThread1of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:06,746 WARN L322 ript$VariableManager]: TermVariabe thrThread1of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:06,746 WARN L322 ript$VariableManager]: TermVariabe thrThread1of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:06,746 WARN L322 ript$VariableManager]: TermVariabe thrThread1of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:06,746 WARN L322 ript$VariableManager]: TermVariabe thrThread1of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:06,747 WARN L322 ript$VariableManager]: TermVariabe thrThread1of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:06,747 WARN L322 ript$VariableManager]: TermVariabe thrThread1of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:06,747 WARN L322 ript$VariableManager]: TermVariabe thrThread1of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:06,747 WARN L322 ript$VariableManager]: TermVariabe |thrThread2of5ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:06,747 WARN L322 ript$VariableManager]: TermVariabe |thrThread2of5ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:06,747 WARN L322 ript$VariableManager]: TermVariabe thrThread2of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:06,747 WARN L322 ript$VariableManager]: TermVariabe thrThread2of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:06,748 WARN L322 ript$VariableManager]: TermVariabe |thrThread2of5ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:06,748 WARN L322 ript$VariableManager]: TermVariabe |thrThread2of5ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:06,748 WARN L322 ript$VariableManager]: TermVariabe thrThread2of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:06,748 WARN L322 ript$VariableManager]: TermVariabe thrThread2of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:06,748 WARN L322 ript$VariableManager]: TermVariabe thrThread2of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:06,749 WARN L322 ript$VariableManager]: TermVariabe thrThread2of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:06,749 WARN L322 ript$VariableManager]: TermVariabe thrThread2of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:06,750 WARN L322 ript$VariableManager]: TermVariabe thrThread2of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:06,750 WARN L322 ript$VariableManager]: TermVariabe thrThread2of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:06,750 WARN L322 ript$VariableManager]: TermVariabe thrThread2of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:06,750 WARN L322 ript$VariableManager]: TermVariabe |thrThread3of5ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:06,750 WARN L322 ript$VariableManager]: TermVariabe |thrThread3of5ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:06,750 WARN L322 ript$VariableManager]: TermVariabe thrThread3of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:06,750 WARN L322 ript$VariableManager]: TermVariabe thrThread3of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:06,751 WARN L322 ript$VariableManager]: TermVariabe |thrThread3of5ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:06,751 WARN L322 ript$VariableManager]: TermVariabe |thrThread3of5ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:06,751 WARN L322 ript$VariableManager]: TermVariabe thrThread3of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:06,751 WARN L322 ript$VariableManager]: TermVariabe thrThread3of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:06,751 WARN L322 ript$VariableManager]: TermVariabe thrThread3of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:06,751 WARN L322 ript$VariableManager]: TermVariabe thrThread3of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:06,751 WARN L322 ript$VariableManager]: TermVariabe thrThread3of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:06,752 WARN L322 ript$VariableManager]: TermVariabe thrThread3of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:06,752 WARN L322 ript$VariableManager]: TermVariabe thrThread3of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:06,752 WARN L322 ript$VariableManager]: TermVariabe thrThread3of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:06,752 WARN L322 ript$VariableManager]: TermVariabe thrThread1of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:06,752 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:06,752 WARN L322 ript$VariableManager]: TermVariabe thrThread1of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:06,753 WARN L322 ript$VariableManager]: TermVariabe thrThread1of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:06,753 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:06,753 WARN L322 ript$VariableManager]: TermVariabe thrThread2of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:06,753 WARN L322 ript$VariableManager]: TermVariabe |thrThread2of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:06,753 WARN L322 ript$VariableManager]: TermVariabe thrThread2of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:06,753 WARN L322 ript$VariableManager]: TermVariabe |thrThread2of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:06,753 WARN L322 ript$VariableManager]: TermVariabe thrThread2of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:06,755 WARN L322 ript$VariableManager]: TermVariabe |thrThread3of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:06,755 WARN L322 ript$VariableManager]: TermVariabe thrThread3of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:06,755 WARN L322 ript$VariableManager]: TermVariabe thrThread3of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:06,755 WARN L322 ript$VariableManager]: TermVariabe thrThread3of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:06,755 WARN L322 ript$VariableManager]: TermVariabe |thrThread3of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:06,755 WARN L322 ript$VariableManager]: TermVariabe |thrThread4of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:06,756 WARN L322 ript$VariableManager]: TermVariabe thrThread4of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:06,756 WARN L322 ript$VariableManager]: TermVariabe |thrThread4of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:06,756 WARN L322 ript$VariableManager]: TermVariabe thrThread4of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:06,756 WARN L322 ript$VariableManager]: TermVariabe thrThread4of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:06,756 WARN L322 ript$VariableManager]: TermVariabe thrThread5of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:06,756 WARN L322 ript$VariableManager]: TermVariabe thrThread5of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:06,756 WARN L322 ript$VariableManager]: TermVariabe |thrThread5of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:06,757 WARN L322 ript$VariableManager]: TermVariabe |thrThread5of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:06,757 WARN L322 ript$VariableManager]: TermVariabe thrThread5of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:06,760 INFO L148 ThreadInstanceAdder]: Constructed 5 joinOtherThreadTransitions. [2021-12-21 15:10:06,762 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-21 15:10:06,762 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=true, 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 [2021-12-21 15:10:06,762 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-12-21 15:10:06,763 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 116 places, 116 transitions, 292 flow [2021-12-21 15:10:06,837 INFO L129 PetriNetUnfolder]: 189/1327 cut-off events. [2021-12-21 15:10:06,838 INFO L130 PetriNetUnfolder]: For 110/110 co-relation queries the response was YES. [2021-12-21 15:10:06,864 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1438 conditions, 1327 events. 189/1327 cut-off events. For 110/110 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 7613 event pairs, 23 based on Foata normal form. 0/1122 useless extension candidates. Maximal degree in co-relation 746. Up to 80 conditions per place. [2021-12-21 15:10:06,864 INFO L82 GeneralOperation]: Start removeDead. Operand has 116 places, 116 transitions, 292 flow [2021-12-21 15:10:06,867 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 107 places, 106 transitions, 272 flow [2021-12-21 15:10:06,870 INFO L129 PetriNetUnfolder]: 6/74 cut-off events. [2021-12-21 15:10:06,870 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-12-21 15:10:06,870 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-21 15:10:06,870 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] [2021-12-21 15:10:06,870 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION] === [2021-12-21 15:10:06,870 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 15:10:06,870 INFO L85 PathProgramCache]: Analyzing trace with hash -1138952928, now seen corresponding path program 1 times [2021-12-21 15:10:06,870 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 15:10:06,870 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1344404371] [2021-12-21 15:10:06,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 15:10:06,871 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 15:10:06,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:10:06,894 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 15:10:06,894 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 15:10:06,894 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1344404371] [2021-12-21 15:10:06,894 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1344404371] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 15:10:06,895 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 15:10:06,895 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-21 15:10:06,895 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [377893826] [2021-12-21 15:10:06,895 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 15:10:06,895 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-12-21 15:10:06,895 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 15:10:06,896 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-12-21 15:10:06,896 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-12-21 15:10:06,896 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 100 out of 116 [2021-12-21 15:10:06,897 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 107 places, 106 transitions, 272 flow. Second operand has 2 states, 2 states have (on average 100.5) internal successors, (201), 2 states have internal predecessors, (201), 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) [2021-12-21 15:10:06,897 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-21 15:10:06,897 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 100 of 116 [2021-12-21 15:10:06,897 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-21 15:10:06,968 INFO L129 PetriNetUnfolder]: 86/936 cut-off events. [2021-12-21 15:10:06,968 INFO L130 PetriNetUnfolder]: For 285/285 co-relation queries the response was YES. [2021-12-21 15:10:06,970 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1133 conditions, 936 events. 86/936 cut-off events. For 285/285 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 4964 event pairs, 23 based on Foata normal form. 71/936 useless extension candidates. Maximal degree in co-relation 584. Up to 86 conditions per place. [2021-12-21 15:10:06,972 INFO L132 encePairwiseOnDemand]: 112/116 looper letters, 10 selfloop transitions, 0 changer transitions 1/102 dead transitions. [2021-12-21 15:10:06,972 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 102 transitions, 284 flow [2021-12-21 15:10:06,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-12-21 15:10:06,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2021-12-21 15:10:06,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 214 transitions. [2021-12-21 15:10:06,973 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.9224137931034483 [2021-12-21 15:10:06,973 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 214 transitions. [2021-12-21 15:10:06,974 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 214 transitions. [2021-12-21 15:10:06,974 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-21 15:10:06,974 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 214 transitions. [2021-12-21 15:10:06,974 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 107.0) internal successors, (214), 2 states have internal predecessors, (214), 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) [2021-12-21 15:10:06,975 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 116.0) internal successors, (348), 3 states have internal predecessors, (348), 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) [2021-12-21 15:10:06,975 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 116.0) internal successors, (348), 3 states have internal predecessors, (348), 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) [2021-12-21 15:10:06,975 INFO L186 Difference]: Start difference. First operand has 107 places, 106 transitions, 272 flow. Second operand 2 states and 214 transitions. [2021-12-21 15:10:06,975 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 108 places, 102 transitions, 284 flow [2021-12-21 15:10:06,976 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 108 places, 102 transitions, 284 flow, removed 0 selfloop flow, removed 0 redundant places. [2021-12-21 15:10:06,977 INFO L242 Difference]: Finished difference. Result has 108 places, 101 transitions, 262 flow [2021-12-21 15:10:06,978 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=116, PETRI_DIFFERENCE_MINUEND_FLOW=264, PETRI_DIFFERENCE_MINUEND_PLACES=107, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=102, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=102, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=262, PETRI_PLACES=108, PETRI_TRANSITIONS=101} [2021-12-21 15:10:06,979 INFO L334 CegarLoopForPetriNet]: 107 programPoint places, 1 predicate places. [2021-12-21 15:10:06,979 INFO L470 AbstractCegarLoop]: Abstraction has has 108 places, 101 transitions, 262 flow [2021-12-21 15:10:06,979 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 100.5) internal successors, (201), 2 states have internal predecessors, (201), 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) [2021-12-21 15:10:06,979 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-21 15:10:06,979 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] [2021-12-21 15:10:06,979 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-12-21 15:10:06,979 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION] === [2021-12-21 15:10:06,980 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 15:10:06,980 INFO L85 PathProgramCache]: Analyzing trace with hash -1009870209, now seen corresponding path program 1 times [2021-12-21 15:10:06,980 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 15:10:06,980 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1802741710] [2021-12-21 15:10:06,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 15:10:06,980 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 15:10:06,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:10:07,028 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 15:10:07,029 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 15:10:07,029 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1802741710] [2021-12-21 15:10:07,029 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1802741710] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 15:10:07,029 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 15:10:07,029 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-21 15:10:07,031 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [963672061] [2021-12-21 15:10:07,031 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 15:10:07,031 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-21 15:10:07,031 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 15:10:07,032 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-21 15:10:07,032 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2021-12-21 15:10:07,033 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 74 out of 116 [2021-12-21 15:10:07,033 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 108 places, 101 transitions, 262 flow. Second operand has 6 states, 6 states have (on average 76.16666666666667) internal successors, (457), 6 states have internal predecessors, (457), 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) [2021-12-21 15:10:07,033 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-21 15:10:07,033 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 74 of 116 [2021-12-21 15:10:07,033 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-21 15:10:07,201 INFO L129 PetriNetUnfolder]: 90/1150 cut-off events. [2021-12-21 15:10:07,202 INFO L130 PetriNetUnfolder]: For 120/120 co-relation queries the response was YES. [2021-12-21 15:10:07,203 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1903 conditions, 1150 events. 90/1150 cut-off events. For 120/120 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 7075 event pairs, 7 based on Foata normal form. 0/1083 useless extension candidates. Maximal degree in co-relation 1895. Up to 450 conditions per place. [2021-12-21 15:10:07,206 INFO L132 encePairwiseOnDemand]: 104/116 looper letters, 43 selfloop transitions, 9 changer transitions 0/118 dead transitions. [2021-12-21 15:10:07,206 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 112 places, 118 transitions, 415 flow [2021-12-21 15:10:07,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-21 15:10:07,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2021-12-21 15:10:07,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 499 transitions. [2021-12-21 15:10:07,208 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7169540229885057 [2021-12-21 15:10:07,208 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 499 transitions. [2021-12-21 15:10:07,208 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 499 transitions. [2021-12-21 15:10:07,208 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-21 15:10:07,208 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 499 transitions. [2021-12-21 15:10:07,209 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 83.16666666666667) internal successors, (499), 6 states have internal predecessors, (499), 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) [2021-12-21 15:10:07,210 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 116.0) internal successors, (812), 7 states have internal predecessors, (812), 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) [2021-12-21 15:10:07,210 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 116.0) internal successors, (812), 7 states have internal predecessors, (812), 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) [2021-12-21 15:10:07,211 INFO L186 Difference]: Start difference. First operand has 108 places, 101 transitions, 262 flow. Second operand 6 states and 499 transitions. [2021-12-21 15:10:07,211 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 112 places, 118 transitions, 415 flow [2021-12-21 15:10:07,212 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 112 places, 118 transitions, 415 flow, removed 0 selfloop flow, removed 0 redundant places. [2021-12-21 15:10:07,213 INFO L242 Difference]: Finished difference. Result has 113 places, 104 transitions, 304 flow [2021-12-21 15:10:07,213 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=116, PETRI_DIFFERENCE_MINUEND_FLOW=262, PETRI_DIFFERENCE_MINUEND_PLACES=107, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=101, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=92, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=304, PETRI_PLACES=113, PETRI_TRANSITIONS=104} [2021-12-21 15:10:07,213 INFO L334 CegarLoopForPetriNet]: 107 programPoint places, 6 predicate places. [2021-12-21 15:10:07,213 INFO L470 AbstractCegarLoop]: Abstraction has has 113 places, 104 transitions, 304 flow [2021-12-21 15:10:07,214 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 76.16666666666667) internal successors, (457), 6 states have internal predecessors, (457), 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) [2021-12-21 15:10:07,214 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-21 15:10:07,214 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] [2021-12-21 15:10:07,214 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-12-21 15:10:07,214 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION] === [2021-12-21 15:10:07,214 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 15:10:07,215 INFO L85 PathProgramCache]: Analyzing trace with hash -796867189, now seen corresponding path program 1 times [2021-12-21 15:10:07,215 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 15:10:07,215 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [329780047] [2021-12-21 15:10:07,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 15:10:07,215 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 15:10:07,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:10:07,276 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-12-21 15:10:07,276 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 15:10:07,276 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [329780047] [2021-12-21 15:10:07,276 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [329780047] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-21 15:10:07,276 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [703875269] [2021-12-21 15:10:07,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 15:10:07,277 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 15:10:07,277 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 15:10:07,292 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-21 15:10:07,293 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-12-21 15:10:07,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:10:07,363 INFO L263 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 9 conjunts are in the unsatisfiable core [2021-12-21 15:10:07,364 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 15:10:07,607 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-12-21 15:10:07,607 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-21 15:10:07,764 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-12-21 15:10:07,764 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [703875269] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-21 15:10:07,764 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-21 15:10:07,764 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 20 [2021-12-21 15:10:07,765 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1720932230] [2021-12-21 15:10:07,765 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-21 15:10:07,765 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-12-21 15:10:07,765 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 15:10:07,765 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-12-21 15:10:07,766 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=104, Invalid=276, Unknown=0, NotChecked=0, Total=380 [2021-12-21 15:10:07,767 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 73 out of 116 [2021-12-21 15:10:07,768 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 113 places, 104 transitions, 304 flow. Second operand has 20 states, 20 states have (on average 75.6) internal successors, (1512), 20 states have internal predecessors, (1512), 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) [2021-12-21 15:10:07,768 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-21 15:10:07,768 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 73 of 116 [2021-12-21 15:10:07,768 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-21 15:10:08,170 INFO L129 PetriNetUnfolder]: 87/1130 cut-off events. [2021-12-21 15:10:08,171 INFO L130 PetriNetUnfolder]: For 276/276 co-relation queries the response was YES. [2021-12-21 15:10:08,172 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2122 conditions, 1130 events. 87/1130 cut-off events. For 276/276 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 7284 event pairs, 8 based on Foata normal form. 2/1132 useless extension candidates. Maximal degree in co-relation 2112. Up to 271 conditions per place. [2021-12-21 15:10:08,175 INFO L132 encePairwiseOnDemand]: 101/116 looper letters, 40 selfloop transitions, 20 changer transitions 0/125 dead transitions. [2021-12-21 15:10:08,175 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 124 places, 125 transitions, 483 flow [2021-12-21 15:10:08,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-12-21 15:10:08,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2021-12-21 15:10:08,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 938 transitions. [2021-12-21 15:10:08,177 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.6738505747126436 [2021-12-21 15:10:08,177 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 938 transitions. [2021-12-21 15:10:08,177 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 938 transitions. [2021-12-21 15:10:08,178 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-21 15:10:08,178 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 938 transitions. [2021-12-21 15:10:08,179 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 78.16666666666667) internal successors, (938), 12 states have internal predecessors, (938), 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) [2021-12-21 15:10:08,181 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 116.0) internal successors, (1508), 13 states have internal predecessors, (1508), 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) [2021-12-21 15:10:08,182 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 116.0) internal successors, (1508), 13 states have internal predecessors, (1508), 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) [2021-12-21 15:10:08,182 INFO L186 Difference]: Start difference. First operand has 113 places, 104 transitions, 304 flow. Second operand 12 states and 938 transitions. [2021-12-21 15:10:08,182 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 124 places, 125 transitions, 483 flow [2021-12-21 15:10:08,183 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 120 places, 125 transitions, 471 flow, removed 0 selfloop flow, removed 4 redundant places. [2021-12-21 15:10:08,184 INFO L242 Difference]: Finished difference. Result has 123 places, 112 transitions, 385 flow [2021-12-21 15:10:08,184 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=116, PETRI_DIFFERENCE_MINUEND_FLOW=292, PETRI_DIFFERENCE_MINUEND_PLACES=109, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=104, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=87, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=385, PETRI_PLACES=123, PETRI_TRANSITIONS=112} [2021-12-21 15:10:08,185 INFO L334 CegarLoopForPetriNet]: 107 programPoint places, 16 predicate places. [2021-12-21 15:10:08,185 INFO L470 AbstractCegarLoop]: Abstraction has has 123 places, 112 transitions, 385 flow [2021-12-21 15:10:08,185 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 75.6) internal successors, (1512), 20 states have internal predecessors, (1512), 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) [2021-12-21 15:10:08,185 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-21 15:10:08,186 INFO L254 CegarLoopForPetriNet]: trace histogram [6, 6, 6, 6, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 15:10:08,225 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-12-21 15:10:08,401 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2021-12-21 15:10:08,402 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION] === [2021-12-21 15:10:08,402 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 15:10:08,402 INFO L85 PathProgramCache]: Analyzing trace with hash -1793274580, now seen corresponding path program 1 times [2021-12-21 15:10:08,402 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 15:10:08,402 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1020419571] [2021-12-21 15:10:08,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 15:10:08,403 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 15:10:08,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-21 15:10:08,416 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-21 15:10:08,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-21 15:10:08,431 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-21 15:10:08,431 INFO L628 BasicCegarLoop]: Counterexample is feasible [2021-12-21 15:10:08,431 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATION (1 of 2 remaining) [2021-12-21 15:10:08,431 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2021-12-21 15:10:08,432 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-12-21 15:10:08,432 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2021-12-21 15:10:08,432 WARN L234 ceAbstractionStarter]: 5 thread instances were not sufficient, I will increase this number and restart the analysis [2021-12-21 15:10:08,432 INFO L513 ceAbstractionStarter]: Constructing petrified ICFG for 6 thread instances. [2021-12-21 15:10:08,440 WARN L322 ript$VariableManager]: TermVariabe |thrThread3of6ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:08,440 WARN L322 ript$VariableManager]: TermVariabe |thrThread3of6ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:08,440 WARN L322 ript$VariableManager]: TermVariabe thrThread3of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:08,440 WARN L322 ript$VariableManager]: TermVariabe thrThread3of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:08,440 WARN L322 ript$VariableManager]: TermVariabe |thrThread3of6ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:08,440 WARN L322 ript$VariableManager]: TermVariabe |thrThread3of6ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:08,441 WARN L322 ript$VariableManager]: TermVariabe thrThread3of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:08,441 WARN L322 ript$VariableManager]: TermVariabe thrThread3of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:08,441 WARN L322 ript$VariableManager]: TermVariabe thrThread3of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:08,441 WARN L322 ript$VariableManager]: TermVariabe thrThread3of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:08,441 WARN L322 ript$VariableManager]: TermVariabe thrThread3of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:08,441 WARN L322 ript$VariableManager]: TermVariabe thrThread3of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:08,441 WARN L322 ript$VariableManager]: TermVariabe thrThread3of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:08,442 WARN L322 ript$VariableManager]: TermVariabe thrThread3of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:08,442 WARN L322 ript$VariableManager]: TermVariabe |thrThread4of6ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:08,442 WARN L322 ript$VariableManager]: TermVariabe |thrThread4of6ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:08,442 WARN L322 ript$VariableManager]: TermVariabe thrThread4of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:08,442 WARN L322 ript$VariableManager]: TermVariabe thrThread4of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:08,442 WARN L322 ript$VariableManager]: TermVariabe |thrThread4of6ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:08,442 WARN L322 ript$VariableManager]: TermVariabe |thrThread4of6ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:08,442 WARN L322 ript$VariableManager]: TermVariabe thrThread4of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:08,442 WARN L322 ript$VariableManager]: TermVariabe thrThread4of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:08,443 WARN L322 ript$VariableManager]: TermVariabe thrThread4of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:08,443 WARN L322 ript$VariableManager]: TermVariabe thrThread4of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:08,443 WARN L322 ript$VariableManager]: TermVariabe thrThread4of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:08,443 WARN L322 ript$VariableManager]: TermVariabe thrThread4of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:08,443 WARN L322 ript$VariableManager]: TermVariabe thrThread4of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:08,443 WARN L322 ript$VariableManager]: TermVariabe thrThread4of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:08,444 WARN L322 ript$VariableManager]: TermVariabe |thrThread5of6ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:08,444 WARN L322 ript$VariableManager]: TermVariabe |thrThread5of6ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:08,444 WARN L322 ript$VariableManager]: TermVariabe thrThread5of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:08,444 WARN L322 ript$VariableManager]: TermVariabe thrThread5of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:08,444 WARN L322 ript$VariableManager]: TermVariabe |thrThread5of6ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:08,444 WARN L322 ript$VariableManager]: TermVariabe |thrThread5of6ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:08,444 WARN L322 ript$VariableManager]: TermVariabe thrThread5of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:08,444 WARN L322 ript$VariableManager]: TermVariabe thrThread5of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:08,444 WARN L322 ript$VariableManager]: TermVariabe thrThread5of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:08,445 WARN L322 ript$VariableManager]: TermVariabe thrThread5of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:08,445 WARN L322 ript$VariableManager]: TermVariabe thrThread5of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:08,445 WARN L322 ript$VariableManager]: TermVariabe thrThread5of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:08,445 WARN L322 ript$VariableManager]: TermVariabe thrThread5of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:08,445 WARN L322 ript$VariableManager]: TermVariabe thrThread5of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:08,445 WARN L322 ript$VariableManager]: TermVariabe |thrThread6of6ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:08,445 WARN L322 ript$VariableManager]: TermVariabe |thrThread6of6ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:08,446 WARN L322 ript$VariableManager]: TermVariabe thrThread6of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:08,446 WARN L322 ript$VariableManager]: TermVariabe thrThread6of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:08,446 WARN L322 ript$VariableManager]: TermVariabe |thrThread6of6ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:08,446 WARN L322 ript$VariableManager]: TermVariabe |thrThread6of6ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:08,446 WARN L322 ript$VariableManager]: TermVariabe thrThread6of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:08,446 WARN L322 ript$VariableManager]: TermVariabe thrThread6of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:08,446 WARN L322 ript$VariableManager]: TermVariabe thrThread6of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:08,446 WARN L322 ript$VariableManager]: TermVariabe thrThread6of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:08,446 WARN L322 ript$VariableManager]: TermVariabe thrThread6of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:08,447 WARN L322 ript$VariableManager]: TermVariabe thrThread6of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:08,447 WARN L322 ript$VariableManager]: TermVariabe thrThread6of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:08,447 WARN L322 ript$VariableManager]: TermVariabe thrThread6of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:08,447 WARN L322 ript$VariableManager]: TermVariabe |thrThread2of6ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:08,447 WARN L322 ript$VariableManager]: TermVariabe |thrThread2of6ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:08,447 WARN L322 ript$VariableManager]: TermVariabe thrThread2of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:08,447 WARN L322 ript$VariableManager]: TermVariabe thrThread2of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:08,447 WARN L322 ript$VariableManager]: TermVariabe |thrThread2of6ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:08,448 WARN L322 ript$VariableManager]: TermVariabe |thrThread2of6ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:08,448 WARN L322 ript$VariableManager]: TermVariabe thrThread2of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:08,448 WARN L322 ript$VariableManager]: TermVariabe thrThread2of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:08,448 WARN L322 ript$VariableManager]: TermVariabe thrThread2of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:08,448 WARN L322 ript$VariableManager]: TermVariabe thrThread2of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:08,448 WARN L322 ript$VariableManager]: TermVariabe thrThread2of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:08,448 WARN L322 ript$VariableManager]: TermVariabe thrThread2of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:08,448 WARN L322 ript$VariableManager]: TermVariabe thrThread2of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:08,449 WARN L322 ript$VariableManager]: TermVariabe thrThread2of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:08,449 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of6ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:08,449 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of6ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:08,449 WARN L322 ript$VariableManager]: TermVariabe thrThread1of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:08,449 WARN L322 ript$VariableManager]: TermVariabe thrThread1of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:08,449 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of6ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:08,449 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of6ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:08,449 WARN L322 ript$VariableManager]: TermVariabe thrThread1of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:08,450 WARN L322 ript$VariableManager]: TermVariabe thrThread1of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:08,450 WARN L322 ript$VariableManager]: TermVariabe thrThread1of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:08,450 WARN L322 ript$VariableManager]: TermVariabe thrThread1of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:08,450 WARN L322 ript$VariableManager]: TermVariabe thrThread1of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:08,450 WARN L322 ript$VariableManager]: TermVariabe thrThread1of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:08,450 WARN L322 ript$VariableManager]: TermVariabe thrThread1of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:08,450 WARN L322 ript$VariableManager]: TermVariabe thrThread1of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:08,451 WARN L322 ript$VariableManager]: TermVariabe thrThread1of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:08,451 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:08,451 WARN L322 ript$VariableManager]: TermVariabe thrThread1of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:08,451 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:08,451 WARN L322 ript$VariableManager]: TermVariabe thrThread1of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:08,451 WARN L322 ript$VariableManager]: TermVariabe |thrThread2of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:08,452 WARN L322 ript$VariableManager]: TermVariabe thrThread2of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:08,452 WARN L322 ript$VariableManager]: TermVariabe |thrThread2of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:08,452 WARN L322 ript$VariableManager]: TermVariabe thrThread2of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:08,452 WARN L322 ript$VariableManager]: TermVariabe thrThread2of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:08,452 WARN L322 ript$VariableManager]: TermVariabe thrThread3of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:08,452 WARN L322 ript$VariableManager]: TermVariabe |thrThread3of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:08,452 WARN L322 ript$VariableManager]: TermVariabe |thrThread3of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:08,453 WARN L322 ript$VariableManager]: TermVariabe thrThread3of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:08,453 WARN L322 ript$VariableManager]: TermVariabe thrThread3of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:08,453 WARN L322 ript$VariableManager]: TermVariabe thrThread4of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:08,453 WARN L322 ript$VariableManager]: TermVariabe thrThread4of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:08,453 WARN L322 ript$VariableManager]: TermVariabe thrThread4of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:08,453 WARN L322 ript$VariableManager]: TermVariabe |thrThread4of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:08,453 WARN L322 ript$VariableManager]: TermVariabe |thrThread4of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:08,454 WARN L322 ript$VariableManager]: TermVariabe |thrThread5of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:08,454 WARN L322 ript$VariableManager]: TermVariabe thrThread5of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:08,454 WARN L322 ript$VariableManager]: TermVariabe thrThread5of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:08,454 WARN L322 ript$VariableManager]: TermVariabe |thrThread5of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:08,454 WARN L322 ript$VariableManager]: TermVariabe thrThread5of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:08,454 WARN L322 ript$VariableManager]: TermVariabe thrThread6of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:08,454 WARN L322 ript$VariableManager]: TermVariabe |thrThread6of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:08,455 WARN L322 ript$VariableManager]: TermVariabe thrThread6of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:08,455 WARN L322 ript$VariableManager]: TermVariabe thrThread6of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:08,455 WARN L322 ript$VariableManager]: TermVariabe |thrThread6of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:08,456 INFO L148 ThreadInstanceAdder]: Constructed 6 joinOtherThreadTransitions. [2021-12-21 15:10:08,457 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-21 15:10:08,458 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=true, 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 [2021-12-21 15:10:08,458 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-12-21 15:10:08,458 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 124 places, 123 transitions, 324 flow [2021-12-21 15:10:08,654 INFO L129 PetriNetUnfolder]: 399/2577 cut-off events. [2021-12-21 15:10:08,654 INFO L130 PetriNetUnfolder]: For 242/242 co-relation queries the response was YES. [2021-12-21 15:10:08,658 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2809 conditions, 2577 events. 399/2577 cut-off events. For 242/242 co-relation queries the response was YES. Maximal size of possible extension queue 51. Compared 18391 event pairs, 72 based on Foata normal form. 0/2178 useless extension candidates. Maximal degree in co-relation 1426. Up to 192 conditions per place. [2021-12-21 15:10:08,658 INFO L82 GeneralOperation]: Start removeDead. Operand has 124 places, 123 transitions, 324 flow [2021-12-21 15:10:08,663 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 115 places, 113 transitions, 304 flow [2021-12-21 15:10:08,666 INFO L129 PetriNetUnfolder]: 6/74 cut-off events. [2021-12-21 15:10:08,666 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-12-21 15:10:08,666 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-21 15:10:08,666 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] [2021-12-21 15:10:08,666 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION] === [2021-12-21 15:10:08,667 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 15:10:08,667 INFO L85 PathProgramCache]: Analyzing trace with hash 1073742714, now seen corresponding path program 1 times [2021-12-21 15:10:08,667 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 15:10:08,667 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [171028411] [2021-12-21 15:10:08,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 15:10:08,667 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 15:10:08,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:10:08,677 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 15:10:08,677 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 15:10:08,678 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [171028411] [2021-12-21 15:10:08,678 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [171028411] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 15:10:08,678 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 15:10:08,678 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-21 15:10:08,678 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [716717474] [2021-12-21 15:10:08,678 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 15:10:08,678 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-12-21 15:10:08,678 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 15:10:08,679 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-12-21 15:10:08,679 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-12-21 15:10:08,679 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 105 out of 123 [2021-12-21 15:10:08,682 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 115 places, 113 transitions, 304 flow. Second operand has 2 states, 2 states have (on average 106.0) internal successors, (212), 2 states have internal predecessors, (212), 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) [2021-12-21 15:10:08,682 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-21 15:10:08,682 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 105 of 123 [2021-12-21 15:10:08,682 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-21 15:10:08,812 INFO L129 PetriNetUnfolder]: 199/1801 cut-off events. [2021-12-21 15:10:08,813 INFO L130 PetriNetUnfolder]: For 647/647 co-relation queries the response was YES. [2021-12-21 15:10:08,817 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2232 conditions, 1801 events. 199/1801 cut-off events. For 647/647 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 12225 event pairs, 72 based on Foata normal form. 136/1801 useless extension candidates. Maximal degree in co-relation 1120. Up to 199 conditions per place. [2021-12-21 15:10:08,822 INFO L132 encePairwiseOnDemand]: 119/123 looper letters, 12 selfloop transitions, 0 changer transitions 1/109 dead transitions. [2021-12-21 15:10:08,822 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 116 places, 109 transitions, 320 flow [2021-12-21 15:10:08,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-12-21 15:10:08,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2021-12-21 15:10:08,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 226 transitions. [2021-12-21 15:10:08,824 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.9186991869918699 [2021-12-21 15:10:08,824 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 226 transitions. [2021-12-21 15:10:08,824 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 226 transitions. [2021-12-21 15:10:08,824 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-21 15:10:08,824 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 226 transitions. [2021-12-21 15:10:08,825 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 113.0) internal successors, (226), 2 states have internal predecessors, (226), 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) [2021-12-21 15:10:08,826 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 123.0) internal successors, (369), 3 states have internal predecessors, (369), 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) [2021-12-21 15:10:08,826 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 123.0) internal successors, (369), 3 states have internal predecessors, (369), 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) [2021-12-21 15:10:08,826 INFO L186 Difference]: Start difference. First operand has 115 places, 113 transitions, 304 flow. Second operand 2 states and 226 transitions. [2021-12-21 15:10:08,826 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 116 places, 109 transitions, 320 flow [2021-12-21 15:10:08,828 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 116 places, 109 transitions, 320 flow, removed 0 selfloop flow, removed 0 redundant places. [2021-12-21 15:10:08,829 INFO L242 Difference]: Finished difference. Result has 116 places, 108 transitions, 294 flow [2021-12-21 15:10:08,829 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=123, PETRI_DIFFERENCE_MINUEND_FLOW=296, PETRI_DIFFERENCE_MINUEND_PLACES=115, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=109, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=109, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=294, PETRI_PLACES=116, PETRI_TRANSITIONS=108} [2021-12-21 15:10:08,830 INFO L334 CegarLoopForPetriNet]: 115 programPoint places, 1 predicate places. [2021-12-21 15:10:08,830 INFO L470 AbstractCegarLoop]: Abstraction has has 116 places, 108 transitions, 294 flow [2021-12-21 15:10:08,830 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 106.0) internal successors, (212), 2 states have internal predecessors, (212), 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) [2021-12-21 15:10:08,830 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-21 15:10:08,831 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] [2021-12-21 15:10:08,831 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-12-21 15:10:08,831 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION] === [2021-12-21 15:10:08,831 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 15:10:08,831 INFO L85 PathProgramCache]: Analyzing trace with hash 2090329114, now seen corresponding path program 1 times [2021-12-21 15:10:08,831 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 15:10:08,831 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [816252628] [2021-12-21 15:10:08,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 15:10:08,832 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 15:10:08,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:10:08,873 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 15:10:08,873 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 15:10:08,873 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [816252628] [2021-12-21 15:10:08,873 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [816252628] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 15:10:08,874 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 15:10:08,874 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-21 15:10:08,874 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1385130902] [2021-12-21 15:10:08,874 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 15:10:08,875 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-21 15:10:08,875 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 15:10:08,875 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-21 15:10:08,875 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2021-12-21 15:10:08,875 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 79 out of 123 [2021-12-21 15:10:08,876 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 116 places, 108 transitions, 294 flow. Second operand has 6 states, 6 states have (on average 81.16666666666667) internal successors, (487), 6 states have internal predecessors, (487), 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) [2021-12-21 15:10:08,876 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-21 15:10:08,876 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 79 of 123 [2021-12-21 15:10:08,876 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-21 15:10:09,117 INFO L129 PetriNetUnfolder]: 207/2229 cut-off events. [2021-12-21 15:10:09,118 INFO L130 PetriNetUnfolder]: For 257/257 co-relation queries the response was YES. [2021-12-21 15:10:09,123 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3724 conditions, 2229 events. 207/2229 cut-off events. For 257/257 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 16900 event pairs, 30 based on Foata normal form. 0/2097 useless extension candidates. Maximal degree in co-relation 3715. Up to 923 conditions per place. [2021-12-21 15:10:09,129 INFO L132 encePairwiseOnDemand]: 111/123 looper letters, 46 selfloop transitions, 9 changer transitions 0/126 dead transitions. [2021-12-21 15:10:09,129 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 120 places, 126 transitions, 458 flow [2021-12-21 15:10:09,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-21 15:10:09,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2021-12-21 15:10:09,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 532 transitions. [2021-12-21 15:10:09,131 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7208672086720868 [2021-12-21 15:10:09,131 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 532 transitions. [2021-12-21 15:10:09,131 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 532 transitions. [2021-12-21 15:10:09,131 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-21 15:10:09,132 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 532 transitions. [2021-12-21 15:10:09,133 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 88.66666666666667) internal successors, (532), 6 states have internal predecessors, (532), 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) [2021-12-21 15:10:09,134 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 123.0) internal successors, (861), 7 states have internal predecessors, (861), 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) [2021-12-21 15:10:09,135 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 123.0) internal successors, (861), 7 states have internal predecessors, (861), 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) [2021-12-21 15:10:09,135 INFO L186 Difference]: Start difference. First operand has 116 places, 108 transitions, 294 flow. Second operand 6 states and 532 transitions. [2021-12-21 15:10:09,135 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 120 places, 126 transitions, 458 flow [2021-12-21 15:10:09,136 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 120 places, 126 transitions, 458 flow, removed 0 selfloop flow, removed 0 redundant places. [2021-12-21 15:10:09,137 INFO L242 Difference]: Finished difference. Result has 121 places, 111 transitions, 336 flow [2021-12-21 15:10:09,138 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=123, PETRI_DIFFERENCE_MINUEND_FLOW=294, PETRI_DIFFERENCE_MINUEND_PLACES=115, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=108, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=99, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=336, PETRI_PLACES=121, PETRI_TRANSITIONS=111} [2021-12-21 15:10:09,138 INFO L334 CegarLoopForPetriNet]: 115 programPoint places, 6 predicate places. [2021-12-21 15:10:09,138 INFO L470 AbstractCegarLoop]: Abstraction has has 121 places, 111 transitions, 336 flow [2021-12-21 15:10:09,138 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 81.16666666666667) internal successors, (487), 6 states have internal predecessors, (487), 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) [2021-12-21 15:10:09,139 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-21 15:10:09,139 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] [2021-12-21 15:10:09,139 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-12-21 15:10:09,139 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION] === [2021-12-21 15:10:09,139 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 15:10:09,139 INFO L85 PathProgramCache]: Analyzing trace with hash 1136105305, now seen corresponding path program 1 times [2021-12-21 15:10:09,140 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 15:10:09,140 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [331049168] [2021-12-21 15:10:09,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 15:10:09,140 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 15:10:09,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:10:09,196 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-12-21 15:10:09,197 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 15:10:09,197 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [331049168] [2021-12-21 15:10:09,197 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [331049168] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-21 15:10:09,197 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [882434295] [2021-12-21 15:10:09,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 15:10:09,197 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 15:10:09,198 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 15:10:09,203 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-21 15:10:09,204 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-12-21 15:10:09,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:10:09,274 INFO L263 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 9 conjunts are in the unsatisfiable core [2021-12-21 15:10:09,276 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 15:10:09,587 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-12-21 15:10:09,587 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-21 15:10:09,746 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-12-21 15:10:09,746 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [882434295] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-21 15:10:09,746 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-21 15:10:09,747 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 20 [2021-12-21 15:10:09,747 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1477403537] [2021-12-21 15:10:09,747 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-21 15:10:09,747 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-12-21 15:10:09,747 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 15:10:09,748 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-12-21 15:10:09,748 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=104, Invalid=276, Unknown=0, NotChecked=0, Total=380 [2021-12-21 15:10:09,749 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 78 out of 123 [2021-12-21 15:10:09,751 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 121 places, 111 transitions, 336 flow. Second operand has 20 states, 20 states have (on average 80.6) internal successors, (1612), 20 states have internal predecessors, (1612), 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) [2021-12-21 15:10:09,751 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-21 15:10:09,751 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 78 of 123 [2021-12-21 15:10:09,751 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-21 15:10:10,386 INFO L129 PetriNetUnfolder]: 204/2209 cut-off events. [2021-12-21 15:10:10,386 INFO L130 PetriNetUnfolder]: For 573/573 co-relation queries the response was YES. [2021-12-21 15:10:10,389 INFO L84 FinitePrefix]: Finished finitePrefix Result has 4182 conditions, 2209 events. 204/2209 cut-off events. For 573/573 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 17141 event pairs, 31 based on Foata normal form. 2/2211 useless extension candidates. Maximal degree in co-relation 4171. Up to 577 conditions per place. [2021-12-21 15:10:10,394 INFO L132 encePairwiseOnDemand]: 108/123 looper letters, 43 selfloop transitions, 20 changer transitions 0/133 dead transitions. [2021-12-21 15:10:10,394 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 132 places, 133 transitions, 526 flow [2021-12-21 15:10:10,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-12-21 15:10:10,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2021-12-21 15:10:10,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1001 transitions. [2021-12-21 15:10:10,396 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.6781842818428184 [2021-12-21 15:10:10,397 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 1001 transitions. [2021-12-21 15:10:10,397 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 1001 transitions. [2021-12-21 15:10:10,397 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-21 15:10:10,397 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 1001 transitions. [2021-12-21 15:10:10,399 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 83.41666666666667) internal successors, (1001), 12 states have internal predecessors, (1001), 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) [2021-12-21 15:10:10,400 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 123.0) internal successors, (1599), 13 states have internal predecessors, (1599), 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) [2021-12-21 15:10:10,401 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 123.0) internal successors, (1599), 13 states have internal predecessors, (1599), 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) [2021-12-21 15:10:10,401 INFO L186 Difference]: Start difference. First operand has 121 places, 111 transitions, 336 flow. Second operand 12 states and 1001 transitions. [2021-12-21 15:10:10,401 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 132 places, 133 transitions, 526 flow [2021-12-21 15:10:10,403 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 128 places, 133 transitions, 514 flow, removed 0 selfloop flow, removed 4 redundant places. [2021-12-21 15:10:10,404 INFO L242 Difference]: Finished difference. Result has 131 places, 119 transitions, 417 flow [2021-12-21 15:10:10,404 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=123, PETRI_DIFFERENCE_MINUEND_FLOW=324, PETRI_DIFFERENCE_MINUEND_PLACES=117, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=111, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=94, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=417, PETRI_PLACES=131, PETRI_TRANSITIONS=119} [2021-12-21 15:10:10,404 INFO L334 CegarLoopForPetriNet]: 115 programPoint places, 16 predicate places. [2021-12-21 15:10:10,404 INFO L470 AbstractCegarLoop]: Abstraction has has 131 places, 119 transitions, 417 flow [2021-12-21 15:10:10,405 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 80.6) internal successors, (1612), 20 states have internal predecessors, (1612), 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) [2021-12-21 15:10:10,405 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-21 15:10:10,405 INFO L254 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 15:10:10,422 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2021-12-21 15:10:10,619 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 15:10:10,619 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION] === [2021-12-21 15:10:10,620 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 15:10:10,620 INFO L85 PathProgramCache]: Analyzing trace with hash -86842844, now seen corresponding path program 1 times [2021-12-21 15:10:10,620 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 15:10:10,620 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1348549419] [2021-12-21 15:10:10,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 15:10:10,620 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 15:10:10,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:10:10,695 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 2 proven. 32 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-21 15:10:10,696 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 15:10:10,696 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1348549419] [2021-12-21 15:10:10,696 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1348549419] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-21 15:10:10,696 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1215533929] [2021-12-21 15:10:10,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 15:10:10,696 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 15:10:10,696 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 15:10:10,697 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-21 15:10:10,698 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-12-21 15:10:10,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:10:10,775 INFO L263 TraceCheckSpWp]: Trace formula consists of 199 conjuncts, 10 conjunts are in the unsatisfiable core [2021-12-21 15:10:10,777 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 15:10:10,997 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 12 proven. 22 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-21 15:10:10,997 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-21 15:10:11,173 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 12 proven. 22 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-21 15:10:11,173 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1215533929] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-21 15:10:11,173 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-21 15:10:11,173 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 21 [2021-12-21 15:10:11,173 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [884508065] [2021-12-21 15:10:11,173 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-21 15:10:11,174 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2021-12-21 15:10:11,174 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 15:10:11,174 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-12-21 15:10:11,174 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=341, Unknown=0, NotChecked=0, Total=420 [2021-12-21 15:10:11,176 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 81 out of 123 [2021-12-21 15:10:11,177 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 131 places, 119 transitions, 417 flow. Second operand has 21 states, 21 states have (on average 84.57142857142857) internal successors, (1776), 21 states have internal predecessors, (1776), 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) [2021-12-21 15:10:11,177 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-21 15:10:11,177 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 81 of 123 [2021-12-21 15:10:11,177 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-21 15:10:11,669 INFO L129 PetriNetUnfolder]: 209/1895 cut-off events. [2021-12-21 15:10:11,669 INFO L130 PetriNetUnfolder]: For 1240/1240 co-relation queries the response was YES. [2021-12-21 15:10:11,674 INFO L84 FinitePrefix]: Finished finitePrefix Result has 4470 conditions, 1895 events. 209/1895 cut-off events. For 1240/1240 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 14149 event pairs, 8 based on Foata normal form. 52/1947 useless extension candidates. Maximal degree in co-relation 4456. Up to 491 conditions per place. [2021-12-21 15:10:11,679 INFO L132 encePairwiseOnDemand]: 108/123 looper letters, 45 selfloop transitions, 29 changer transitions 0/146 dead transitions. [2021-12-21 15:10:11,680 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 153 places, 146 transitions, 673 flow [2021-12-21 15:10:11,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-12-21 15:10:11,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2021-12-21 15:10:11,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 1939 transitions. [2021-12-21 15:10:11,683 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.6854012018381054 [2021-12-21 15:10:11,683 INFO L72 ComplementDD]: Start complementDD. Operand 23 states and 1939 transitions. [2021-12-21 15:10:11,683 INFO L73 IsDeterministic]: Start isDeterministic. Operand 23 states and 1939 transitions. [2021-12-21 15:10:11,684 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-21 15:10:11,684 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 23 states and 1939 transitions. [2021-12-21 15:10:11,686 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 24 states, 23 states have (on average 84.30434782608695) internal successors, (1939), 23 states have internal predecessors, (1939), 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) [2021-12-21 15:10:11,691 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 24 states, 24 states have (on average 123.0) internal successors, (2952), 24 states have internal predecessors, (2952), 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) [2021-12-21 15:10:11,691 INFO L81 ComplementDD]: Finished complementDD. Result has 24 states, 24 states have (on average 123.0) internal successors, (2952), 24 states have internal predecessors, (2952), 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) [2021-12-21 15:10:11,692 INFO L186 Difference]: Start difference. First operand has 131 places, 119 transitions, 417 flow. Second operand 23 states and 1939 transitions. [2021-12-21 15:10:11,692 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 153 places, 146 transitions, 673 flow [2021-12-21 15:10:11,695 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 149 places, 146 transitions, 652 flow, removed 5 selfloop flow, removed 4 redundant places. [2021-12-21 15:10:11,697 INFO L242 Difference]: Finished difference. Result has 150 places, 127 transitions, 497 flow [2021-12-21 15:10:11,697 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=123, PETRI_DIFFERENCE_MINUEND_FLOW=398, PETRI_DIFFERENCE_MINUEND_PLACES=127, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=119, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=95, PETRI_DIFFERENCE_SUBTRAHEND_STATES=23, PETRI_FLOW=497, PETRI_PLACES=150, PETRI_TRANSITIONS=127} [2021-12-21 15:10:11,697 INFO L334 CegarLoopForPetriNet]: 115 programPoint places, 35 predicate places. [2021-12-21 15:10:11,697 INFO L470 AbstractCegarLoop]: Abstraction has has 150 places, 127 transitions, 497 flow [2021-12-21 15:10:11,698 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 84.57142857142857) internal successors, (1776), 21 states have internal predecessors, (1776), 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) [2021-12-21 15:10:11,698 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-21 15:10:11,698 INFO L254 CegarLoopForPetriNet]: trace histogram [7, 7, 7, 7, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 15:10:11,715 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-12-21 15:10:11,913 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 15:10:11,914 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0INUSE_VIOLATION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION] === [2021-12-21 15:10:11,914 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 15:10:11,914 INFO L85 PathProgramCache]: Analyzing trace with hash 1969581107, now seen corresponding path program 1 times [2021-12-21 15:10:11,914 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 15:10:11,914 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1403983696] [2021-12-21 15:10:11,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 15:10:11,914 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 15:10:11,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-21 15:10:11,930 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-21 15:10:11,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-21 15:10:11,951 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-21 15:10:11,951 INFO L628 BasicCegarLoop]: Counterexample is feasible [2021-12-21 15:10:11,951 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATION (1 of 2 remaining) [2021-12-21 15:10:11,951 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2021-12-21 15:10:11,951 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2021-12-21 15:10:11,952 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1] [2021-12-21 15:10:11,952 WARN L234 ceAbstractionStarter]: 6 thread instances were not sufficient, I will increase this number and restart the analysis [2021-12-21 15:10:11,952 INFO L513 ceAbstractionStarter]: Constructing petrified ICFG for 7 thread instances. [2021-12-21 15:10:11,960 WARN L322 ript$VariableManager]: TermVariabe |thrThread2of7ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:11,960 WARN L322 ript$VariableManager]: TermVariabe |thrThread2of7ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:11,960 WARN L322 ript$VariableManager]: TermVariabe thrThread2of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:11,960 WARN L322 ript$VariableManager]: TermVariabe thrThread2of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:11,960 WARN L322 ript$VariableManager]: TermVariabe |thrThread2of7ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:11,961 WARN L322 ript$VariableManager]: TermVariabe |thrThread2of7ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:11,961 WARN L322 ript$VariableManager]: TermVariabe thrThread2of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:11,961 WARN L322 ript$VariableManager]: TermVariabe thrThread2of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:11,961 WARN L322 ript$VariableManager]: TermVariabe thrThread2of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:11,961 WARN L322 ript$VariableManager]: TermVariabe thrThread2of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:11,961 WARN L322 ript$VariableManager]: TermVariabe thrThread2of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:11,961 WARN L322 ript$VariableManager]: TermVariabe thrThread2of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:11,961 WARN L322 ript$VariableManager]: TermVariabe thrThread2of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:11,961 WARN L322 ript$VariableManager]: TermVariabe thrThread2of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:11,961 WARN L322 ript$VariableManager]: TermVariabe |thrThread6of7ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:11,961 WARN L322 ript$VariableManager]: TermVariabe |thrThread6of7ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:11,961 WARN L322 ript$VariableManager]: TermVariabe thrThread6of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:11,961 WARN L322 ript$VariableManager]: TermVariabe thrThread6of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:11,961 WARN L322 ript$VariableManager]: TermVariabe |thrThread6of7ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:11,961 WARN L322 ript$VariableManager]: TermVariabe |thrThread6of7ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:11,961 WARN L322 ript$VariableManager]: TermVariabe thrThread6of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:11,961 WARN L322 ript$VariableManager]: TermVariabe thrThread6of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:11,961 WARN L322 ript$VariableManager]: TermVariabe thrThread6of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:11,962 WARN L322 ript$VariableManager]: TermVariabe thrThread6of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:11,962 WARN L322 ript$VariableManager]: TermVariabe thrThread6of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:11,962 WARN L322 ript$VariableManager]: TermVariabe thrThread6of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:11,962 WARN L322 ript$VariableManager]: TermVariabe thrThread6of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:11,962 WARN L322 ript$VariableManager]: TermVariabe thrThread6of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:11,962 WARN L322 ript$VariableManager]: TermVariabe |thrThread7of7ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:11,962 WARN L322 ript$VariableManager]: TermVariabe |thrThread7of7ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:11,962 WARN L322 ript$VariableManager]: TermVariabe thrThread7of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:11,962 WARN L322 ript$VariableManager]: TermVariabe thrThread7of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:11,962 WARN L322 ript$VariableManager]: TermVariabe |thrThread7of7ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:11,962 WARN L322 ript$VariableManager]: TermVariabe |thrThread7of7ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:11,962 WARN L322 ript$VariableManager]: TermVariabe thrThread7of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:11,962 WARN L322 ript$VariableManager]: TermVariabe thrThread7of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:11,962 WARN L322 ript$VariableManager]: TermVariabe thrThread7of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:11,962 WARN L322 ript$VariableManager]: TermVariabe thrThread7of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:11,962 WARN L322 ript$VariableManager]: TermVariabe thrThread7of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:11,962 WARN L322 ript$VariableManager]: TermVariabe thrThread7of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:11,963 WARN L322 ript$VariableManager]: TermVariabe thrThread7of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:11,963 WARN L322 ript$VariableManager]: TermVariabe thrThread7of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:11,963 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of7ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:11,963 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of7ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:11,963 WARN L322 ript$VariableManager]: TermVariabe thrThread1of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:11,963 WARN L322 ript$VariableManager]: TermVariabe thrThread1of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:11,963 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of7ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:11,963 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of7ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:11,963 WARN L322 ript$VariableManager]: TermVariabe thrThread1of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:11,963 WARN L322 ript$VariableManager]: TermVariabe thrThread1of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:11,963 WARN L322 ript$VariableManager]: TermVariabe thrThread1of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:11,963 WARN L322 ript$VariableManager]: TermVariabe thrThread1of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:11,963 WARN L322 ript$VariableManager]: TermVariabe thrThread1of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:11,963 WARN L322 ript$VariableManager]: TermVariabe thrThread1of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:11,963 WARN L322 ript$VariableManager]: TermVariabe thrThread1of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:11,963 WARN L322 ript$VariableManager]: TermVariabe thrThread1of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:11,964 WARN L322 ript$VariableManager]: TermVariabe |thrThread3of7ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:11,964 WARN L322 ript$VariableManager]: TermVariabe |thrThread3of7ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:11,964 WARN L322 ript$VariableManager]: TermVariabe thrThread3of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:11,964 WARN L322 ript$VariableManager]: TermVariabe thrThread3of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:11,964 WARN L322 ript$VariableManager]: TermVariabe |thrThread3of7ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:11,964 WARN L322 ript$VariableManager]: TermVariabe |thrThread3of7ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:11,964 WARN L322 ript$VariableManager]: TermVariabe thrThread3of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:11,964 WARN L322 ript$VariableManager]: TermVariabe thrThread3of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:11,964 WARN L322 ript$VariableManager]: TermVariabe thrThread3of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:11,964 WARN L322 ript$VariableManager]: TermVariabe thrThread3of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:11,964 WARN L322 ript$VariableManager]: TermVariabe thrThread3of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:11,967 WARN L322 ript$VariableManager]: TermVariabe thrThread3of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:11,967 WARN L322 ript$VariableManager]: TermVariabe thrThread3of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:11,967 WARN L322 ript$VariableManager]: TermVariabe thrThread3of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:11,968 WARN L322 ript$VariableManager]: TermVariabe |thrThread4of7ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:11,968 WARN L322 ript$VariableManager]: TermVariabe |thrThread4of7ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:11,968 WARN L322 ript$VariableManager]: TermVariabe thrThread4of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:11,968 WARN L322 ript$VariableManager]: TermVariabe thrThread4of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:11,968 WARN L322 ript$VariableManager]: TermVariabe |thrThread4of7ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:11,968 WARN L322 ript$VariableManager]: TermVariabe |thrThread4of7ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:11,968 WARN L322 ript$VariableManager]: TermVariabe thrThread4of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:11,968 WARN L322 ript$VariableManager]: TermVariabe thrThread4of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:11,968 WARN L322 ript$VariableManager]: TermVariabe thrThread4of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:11,968 WARN L322 ript$VariableManager]: TermVariabe thrThread4of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:11,968 WARN L322 ript$VariableManager]: TermVariabe thrThread4of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:11,968 WARN L322 ript$VariableManager]: TermVariabe thrThread4of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:11,968 WARN L322 ript$VariableManager]: TermVariabe thrThread4of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:11,968 WARN L322 ript$VariableManager]: TermVariabe thrThread4of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:11,968 WARN L322 ript$VariableManager]: TermVariabe |thrThread5of7ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:11,969 WARN L322 ript$VariableManager]: TermVariabe |thrThread5of7ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:11,969 WARN L322 ript$VariableManager]: TermVariabe thrThread5of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:11,969 WARN L322 ript$VariableManager]: TermVariabe thrThread5of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:11,969 WARN L322 ript$VariableManager]: TermVariabe |thrThread5of7ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:11,969 WARN L322 ript$VariableManager]: TermVariabe |thrThread5of7ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:11,969 WARN L322 ript$VariableManager]: TermVariabe thrThread5of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:11,969 WARN L322 ript$VariableManager]: TermVariabe thrThread5of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:11,969 WARN L322 ript$VariableManager]: TermVariabe thrThread5of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:11,969 WARN L322 ript$VariableManager]: TermVariabe thrThread5of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:11,969 WARN L322 ript$VariableManager]: TermVariabe thrThread5of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:11,969 WARN L322 ript$VariableManager]: TermVariabe thrThread5of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:11,969 WARN L322 ript$VariableManager]: TermVariabe thrThread5of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:11,969 WARN L322 ript$VariableManager]: TermVariabe thrThread5of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:11,969 WARN L322 ript$VariableManager]: TermVariabe thrThread1of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:11,969 WARN L322 ript$VariableManager]: TermVariabe thrThread1of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:11,970 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of7ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:11,970 WARN L322 ript$VariableManager]: TermVariabe thrThread1of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:11,970 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of7ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:11,970 WARN L322 ript$VariableManager]: TermVariabe thrThread2of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:11,970 WARN L322 ript$VariableManager]: TermVariabe |thrThread2of7ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:11,970 WARN L322 ript$VariableManager]: TermVariabe thrThread2of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:11,970 WARN L322 ript$VariableManager]: TermVariabe thrThread2of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:11,970 WARN L322 ript$VariableManager]: TermVariabe |thrThread2of7ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:11,971 WARN L322 ript$VariableManager]: TermVariabe |thrThread3of7ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:11,971 WARN L322 ript$VariableManager]: TermVariabe thrThread3of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:11,971 WARN L322 ript$VariableManager]: TermVariabe thrThread3of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:11,971 WARN L322 ript$VariableManager]: TermVariabe |thrThread3of7ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:11,971 WARN L322 ript$VariableManager]: TermVariabe thrThread3of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:11,971 WARN L322 ript$VariableManager]: TermVariabe |thrThread4of7ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:11,971 WARN L322 ript$VariableManager]: TermVariabe thrThread4of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:11,972 WARN L322 ript$VariableManager]: TermVariabe thrThread4of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:11,972 WARN L322 ript$VariableManager]: TermVariabe thrThread4of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:11,972 WARN L322 ript$VariableManager]: TermVariabe |thrThread4of7ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:11,972 WARN L322 ript$VariableManager]: TermVariabe |thrThread5of7ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:11,972 WARN L322 ript$VariableManager]: TermVariabe thrThread5of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:11,972 WARN L322 ript$VariableManager]: TermVariabe thrThread5of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:11,972 WARN L322 ript$VariableManager]: TermVariabe |thrThread5of7ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:11,972 WARN L322 ript$VariableManager]: TermVariabe thrThread5of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:11,973 WARN L322 ript$VariableManager]: TermVariabe thrThread6of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:11,973 WARN L322 ript$VariableManager]: TermVariabe |thrThread6of7ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:11,973 WARN L322 ript$VariableManager]: TermVariabe |thrThread6of7ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:11,973 WARN L322 ript$VariableManager]: TermVariabe thrThread6of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:11,973 WARN L322 ript$VariableManager]: TermVariabe thrThread6of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:11,973 WARN L322 ript$VariableManager]: TermVariabe thrThread7of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:11,973 WARN L322 ript$VariableManager]: TermVariabe |thrThread7of7ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:11,973 WARN L322 ript$VariableManager]: TermVariabe |thrThread7of7ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:11,973 WARN L322 ript$VariableManager]: TermVariabe thrThread7of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:11,973 WARN L322 ript$VariableManager]: TermVariabe thrThread7of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:11,975 INFO L148 ThreadInstanceAdder]: Constructed 7 joinOtherThreadTransitions. [2021-12-21 15:10:11,976 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-21 15:10:11,976 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=true, 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 [2021-12-21 15:10:11,976 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-12-21 15:10:11,977 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 132 places, 130 transitions, 358 flow [2021-12-21 15:10:12,330 INFO L129 PetriNetUnfolder]: 849/5091 cut-off events. [2021-12-21 15:10:12,331 INFO L130 PetriNetUnfolder]: For 525/525 co-relation queries the response was YES. [2021-12-21 15:10:12,346 INFO L84 FinitePrefix]: Finished finitePrefix Result has 5589 conditions, 5091 events. 849/5091 cut-off events. For 525/525 co-relation queries the response was YES. Maximal size of possible extension queue 96. Compared 44321 event pairs, 201 based on Foata normal form. 0/4306 useless extension candidates. Maximal degree in co-relation 2795. Up to 448 conditions per place. [2021-12-21 15:10:12,346 INFO L82 GeneralOperation]: Start removeDead. Operand has 132 places, 130 transitions, 358 flow [2021-12-21 15:10:12,358 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 123 places, 120 transitions, 338 flow [2021-12-21 15:10:12,360 INFO L129 PetriNetUnfolder]: 6/74 cut-off events. [2021-12-21 15:10:12,360 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-12-21 15:10:12,360 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-21 15:10:12,360 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] [2021-12-21 15:10:12,360 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION] === [2021-12-21 15:10:12,360 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 15:10:12,360 INFO L85 PathProgramCache]: Analyzing trace with hash -177689860, now seen corresponding path program 1 times [2021-12-21 15:10:12,360 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 15:10:12,361 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1851580951] [2021-12-21 15:10:12,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 15:10:12,361 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 15:10:12,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:10:12,371 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 15:10:12,371 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 15:10:12,371 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1851580951] [2021-12-21 15:10:12,371 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1851580951] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 15:10:12,371 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 15:10:12,371 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-21 15:10:12,371 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1466480303] [2021-12-21 15:10:12,371 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 15:10:12,371 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-12-21 15:10:12,371 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 15:10:12,372 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-12-21 15:10:12,372 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-12-21 15:10:12,372 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 110 out of 130 [2021-12-21 15:10:12,372 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 123 places, 120 transitions, 338 flow. Second operand has 2 states, 2 states have (on average 111.0) internal successors, (222), 2 states have internal predecessors, (222), 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) [2021-12-21 15:10:12,372 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-21 15:10:12,372 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 110 of 130 [2021-12-21 15:10:12,372 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-21 15:10:12,622 INFO L129 PetriNetUnfolder]: 456/3546 cut-off events. [2021-12-21 15:10:12,623 INFO L130 PetriNetUnfolder]: For 1449/1449 co-relation queries the response was YES. [2021-12-21 15:10:12,636 INFO L84 FinitePrefix]: Finished finitePrefix Result has 4500 conditions, 3546 events. 456/3546 cut-off events. For 1449/1449 co-relation queries the response was YES. Maximal size of possible extension queue 77. Compared 29289 event pairs, 201 based on Foata normal form. 265/3546 useless extension candidates. Maximal degree in co-relation 2217. Up to 456 conditions per place. [2021-12-21 15:10:12,644 INFO L132 encePairwiseOnDemand]: 126/130 looper letters, 14 selfloop transitions, 0 changer transitions 1/116 dead transitions. [2021-12-21 15:10:12,644 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 124 places, 116 transitions, 358 flow [2021-12-21 15:10:12,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-12-21 15:10:12,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2021-12-21 15:10:12,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 238 transitions. [2021-12-21 15:10:12,645 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.9153846153846154 [2021-12-21 15:10:12,645 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 238 transitions. [2021-12-21 15:10:12,645 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 238 transitions. [2021-12-21 15:10:12,645 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-21 15:10:12,645 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 238 transitions. [2021-12-21 15:10:12,646 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 119.0) internal successors, (238), 2 states have internal predecessors, (238), 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) [2021-12-21 15:10:12,646 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 130.0) internal successors, (390), 3 states have internal predecessors, (390), 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) [2021-12-21 15:10:12,646 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 130.0) internal successors, (390), 3 states have internal predecessors, (390), 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) [2021-12-21 15:10:12,646 INFO L186 Difference]: Start difference. First operand has 123 places, 120 transitions, 338 flow. Second operand 2 states and 238 transitions. [2021-12-21 15:10:12,647 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 124 places, 116 transitions, 358 flow [2021-12-21 15:10:12,648 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 124 places, 116 transitions, 358 flow, removed 0 selfloop flow, removed 0 redundant places. [2021-12-21 15:10:12,649 INFO L242 Difference]: Finished difference. Result has 124 places, 115 transitions, 328 flow [2021-12-21 15:10:12,649 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=130, PETRI_DIFFERENCE_MINUEND_FLOW=330, PETRI_DIFFERENCE_MINUEND_PLACES=123, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=116, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=116, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=328, PETRI_PLACES=124, PETRI_TRANSITIONS=115} [2021-12-21 15:10:12,649 INFO L334 CegarLoopForPetriNet]: 123 programPoint places, 1 predicate places. [2021-12-21 15:10:12,649 INFO L470 AbstractCegarLoop]: Abstraction has has 124 places, 115 transitions, 328 flow [2021-12-21 15:10:12,649 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 111.0) internal successors, (222), 2 states have internal predecessors, (222), 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) [2021-12-21 15:10:12,649 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-21 15:10:12,649 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] [2021-12-21 15:10:12,649 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2021-12-21 15:10:12,650 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION] === [2021-12-21 15:10:12,650 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 15:10:12,650 INFO L85 PathProgramCache]: Analyzing trace with hash 513300316, now seen corresponding path program 1 times [2021-12-21 15:10:12,650 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 15:10:12,650 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1139355604] [2021-12-21 15:10:12,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 15:10:12,650 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 15:10:12,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:10:12,685 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 15:10:12,685 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 15:10:12,685 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1139355604] [2021-12-21 15:10:12,685 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1139355604] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 15:10:12,685 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 15:10:12,685 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-21 15:10:12,685 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [856731860] [2021-12-21 15:10:12,685 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 15:10:12,685 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-21 15:10:12,685 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 15:10:12,686 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-21 15:10:12,686 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2021-12-21 15:10:12,686 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 84 out of 130 [2021-12-21 15:10:12,687 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 124 places, 115 transitions, 328 flow. Second operand has 6 states, 6 states have (on average 86.16666666666667) internal successors, (517), 6 states have internal predecessors, (517), 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) [2021-12-21 15:10:12,687 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-21 15:10:12,687 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 84 of 130 [2021-12-21 15:10:12,687 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-21 15:10:13,173 INFO L129 PetriNetUnfolder]: 469/4384 cut-off events. [2021-12-21 15:10:13,173 INFO L130 PetriNetUnfolder]: For 546/546 co-relation queries the response was YES. [2021-12-21 15:10:13,181 INFO L84 FinitePrefix]: Finished finitePrefix Result has 7394 conditions, 4384 events. 469/4384 cut-off events. For 546/546 co-relation queries the response was YES. Maximal size of possible extension queue 99. Compared 39826 event pairs, 102 based on Foata normal form. 0/4123 useless extension candidates. Maximal degree in co-relation 7384. Up to 1893 conditions per place. [2021-12-21 15:10:13,189 INFO L132 encePairwiseOnDemand]: 118/130 looper letters, 49 selfloop transitions, 9 changer transitions 0/134 dead transitions. [2021-12-21 15:10:13,189 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 128 places, 134 transitions, 503 flow [2021-12-21 15:10:13,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-21 15:10:13,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2021-12-21 15:10:13,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 565 transitions. [2021-12-21 15:10:13,190 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7243589743589743 [2021-12-21 15:10:13,190 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 565 transitions. [2021-12-21 15:10:13,190 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 565 transitions. [2021-12-21 15:10:13,191 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-21 15:10:13,191 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 565 transitions. [2021-12-21 15:10:13,191 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 94.16666666666667) internal successors, (565), 6 states have internal predecessors, (565), 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) [2021-12-21 15:10:13,192 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 130.0) internal successors, (910), 7 states have internal predecessors, (910), 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) [2021-12-21 15:10:13,192 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 130.0) internal successors, (910), 7 states have internal predecessors, (910), 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) [2021-12-21 15:10:13,192 INFO L186 Difference]: Start difference. First operand has 124 places, 115 transitions, 328 flow. Second operand 6 states and 565 transitions. [2021-12-21 15:10:13,193 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 128 places, 134 transitions, 503 flow [2021-12-21 15:10:13,194 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 128 places, 134 transitions, 503 flow, removed 0 selfloop flow, removed 0 redundant places. [2021-12-21 15:10:13,195 INFO L242 Difference]: Finished difference. Result has 129 places, 118 transitions, 370 flow [2021-12-21 15:10:13,195 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=130, PETRI_DIFFERENCE_MINUEND_FLOW=328, PETRI_DIFFERENCE_MINUEND_PLACES=123, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=115, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=106, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=370, PETRI_PLACES=129, PETRI_TRANSITIONS=118} [2021-12-21 15:10:13,195 INFO L334 CegarLoopForPetriNet]: 123 programPoint places, 6 predicate places. [2021-12-21 15:10:13,195 INFO L470 AbstractCegarLoop]: Abstraction has has 129 places, 118 transitions, 370 flow [2021-12-21 15:10:13,196 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 86.16666666666667) internal successors, (517), 6 states have internal predecessors, (517), 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) [2021-12-21 15:10:13,196 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-21 15:10:13,196 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] [2021-12-21 15:10:13,196 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2021-12-21 15:10:13,196 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION] === [2021-12-21 15:10:13,196 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 15:10:13,196 INFO L85 PathProgramCache]: Analyzing trace with hash -199260274, now seen corresponding path program 1 times [2021-12-21 15:10:13,196 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 15:10:13,196 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1581531753] [2021-12-21 15:10:13,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 15:10:13,196 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 15:10:13,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:10:13,289 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-12-21 15:10:13,289 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 15:10:13,289 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1581531753] [2021-12-21 15:10:13,289 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1581531753] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-21 15:10:13,289 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [910694860] [2021-12-21 15:10:13,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 15:10:13,289 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 15:10:13,290 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 15:10:13,290 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-21 15:10:13,330 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-12-21 15:10:13,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:10:13,390 INFO L263 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 9 conjunts are in the unsatisfiable core [2021-12-21 15:10:13,392 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 15:10:13,602 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-12-21 15:10:13,602 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-21 15:10:13,726 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-12-21 15:10:13,727 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [910694860] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-21 15:10:13,727 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-21 15:10:13,727 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 20 [2021-12-21 15:10:13,727 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1594901669] [2021-12-21 15:10:13,727 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-21 15:10:13,727 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-12-21 15:10:13,728 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 15:10:13,728 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-12-21 15:10:13,728 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=104, Invalid=276, Unknown=0, NotChecked=0, Total=380 [2021-12-21 15:10:13,729 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 130 [2021-12-21 15:10:13,730 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 129 places, 118 transitions, 370 flow. Second operand has 20 states, 20 states have (on average 85.6) internal successors, (1712), 20 states have internal predecessors, (1712), 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) [2021-12-21 15:10:13,730 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-21 15:10:13,730 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 130 [2021-12-21 15:10:13,730 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-21 15:10:14,472 INFO L129 PetriNetUnfolder]: 466/4364 cut-off events. [2021-12-21 15:10:14,472 INFO L130 PetriNetUnfolder]: For 1182/1182 co-relation queries the response was YES. [2021-12-21 15:10:14,493 INFO L84 FinitePrefix]: Finished finitePrefix Result has 8317 conditions, 4364 events. 466/4364 cut-off events. For 1182/1182 co-relation queries the response was YES. Maximal size of possible extension queue 99. Compared 40048 event pairs, 103 based on Foata normal form. 2/4366 useless extension candidates. Maximal degree in co-relation 8305. Up to 1219 conditions per place. [2021-12-21 15:10:14,503 INFO L132 encePairwiseOnDemand]: 115/130 looper letters, 46 selfloop transitions, 20 changer transitions 0/141 dead transitions. [2021-12-21 15:10:14,503 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 140 places, 141 transitions, 571 flow [2021-12-21 15:10:14,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-12-21 15:10:14,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2021-12-21 15:10:14,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1064 transitions. [2021-12-21 15:10:14,504 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.6820512820512821 [2021-12-21 15:10:14,505 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 1064 transitions. [2021-12-21 15:10:14,505 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 1064 transitions. [2021-12-21 15:10:14,505 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-21 15:10:14,505 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 1064 transitions. [2021-12-21 15:10:14,506 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 88.66666666666667) internal successors, (1064), 12 states have internal predecessors, (1064), 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) [2021-12-21 15:10:14,508 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 130.0) internal successors, (1690), 13 states have internal predecessors, (1690), 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) [2021-12-21 15:10:14,509 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 130.0) internal successors, (1690), 13 states have internal predecessors, (1690), 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) [2021-12-21 15:10:14,509 INFO L186 Difference]: Start difference. First operand has 129 places, 118 transitions, 370 flow. Second operand 12 states and 1064 transitions. [2021-12-21 15:10:14,509 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 140 places, 141 transitions, 571 flow [2021-12-21 15:10:14,512 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 136 places, 141 transitions, 559 flow, removed 0 selfloop flow, removed 4 redundant places. [2021-12-21 15:10:14,514 INFO L242 Difference]: Finished difference. Result has 139 places, 126 transitions, 451 flow [2021-12-21 15:10:14,514 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=130, PETRI_DIFFERENCE_MINUEND_FLOW=358, PETRI_DIFFERENCE_MINUEND_PLACES=125, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=118, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=101, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=451, PETRI_PLACES=139, PETRI_TRANSITIONS=126} [2021-12-21 15:10:14,514 INFO L334 CegarLoopForPetriNet]: 123 programPoint places, 16 predicate places. [2021-12-21 15:10:14,514 INFO L470 AbstractCegarLoop]: Abstraction has has 139 places, 126 transitions, 451 flow [2021-12-21 15:10:14,525 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 85.6) internal successors, (1712), 20 states have internal predecessors, (1712), 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) [2021-12-21 15:10:14,526 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-21 15:10:14,526 INFO L254 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 15:10:14,558 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-12-21 15:10:14,726 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2021-12-21 15:10:14,727 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION] === [2021-12-21 15:10:14,727 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 15:10:14,727 INFO L85 PathProgramCache]: Analyzing trace with hash -1937108701, now seen corresponding path program 1 times [2021-12-21 15:10:14,727 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 15:10:14,727 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [726547895] [2021-12-21 15:10:14,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 15:10:14,728 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 15:10:14,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:10:14,812 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 2 proven. 32 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-21 15:10:14,813 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 15:10:14,813 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [726547895] [2021-12-21 15:10:14,813 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [726547895] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-21 15:10:14,813 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [92793159] [2021-12-21 15:10:14,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 15:10:14,813 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 15:10:14,813 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 15:10:14,822 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-21 15:10:14,823 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-12-21 15:10:14,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:10:14,918 INFO L263 TraceCheckSpWp]: Trace formula consists of 199 conjuncts, 10 conjunts are in the unsatisfiable core [2021-12-21 15:10:14,919 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 15:10:15,154 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 12 proven. 22 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-21 15:10:15,154 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-21 15:10:15,319 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 12 proven. 22 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-21 15:10:15,320 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [92793159] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-21 15:10:15,320 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-21 15:10:15,320 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 21 [2021-12-21 15:10:15,320 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [282886633] [2021-12-21 15:10:15,320 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-21 15:10:15,320 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2021-12-21 15:10:15,320 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 15:10:15,321 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-12-21 15:10:15,321 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=341, Unknown=0, NotChecked=0, Total=420 [2021-12-21 15:10:15,322 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 86 out of 130 [2021-12-21 15:10:15,324 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 139 places, 126 transitions, 451 flow. Second operand has 21 states, 21 states have (on average 89.57142857142857) internal successors, (1881), 21 states have internal predecessors, (1881), 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) [2021-12-21 15:10:15,324 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-21 15:10:15,324 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 86 of 130 [2021-12-21 15:10:15,324 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-21 15:10:16,004 INFO L129 PetriNetUnfolder]: 488/4012 cut-off events. [2021-12-21 15:10:16,004 INFO L130 PetriNetUnfolder]: For 2645/2645 co-relation queries the response was YES. [2021-12-21 15:10:16,014 INFO L84 FinitePrefix]: Finished finitePrefix Result has 9401 conditions, 4012 events. 488/4012 cut-off events. For 2645/2645 co-relation queries the response was YES. Maximal size of possible extension queue 112. Compared 36779 event pairs, 38 based on Foata normal form. 80/4092 useless extension candidates. Maximal degree in co-relation 9386. Up to 1124 conditions per place. [2021-12-21 15:10:16,022 INFO L132 encePairwiseOnDemand]: 115/130 looper letters, 49 selfloop transitions, 29 changer transitions 0/155 dead transitions. [2021-12-21 15:10:16,022 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 161 places, 155 transitions, 725 flow [2021-12-21 15:10:16,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-12-21 15:10:16,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2021-12-21 15:10:16,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 2058 transitions. [2021-12-21 15:10:16,024 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.6882943143812709 [2021-12-21 15:10:16,024 INFO L72 ComplementDD]: Start complementDD. Operand 23 states and 2058 transitions. [2021-12-21 15:10:16,024 INFO L73 IsDeterministic]: Start isDeterministic. Operand 23 states and 2058 transitions. [2021-12-21 15:10:16,025 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-21 15:10:16,025 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 23 states and 2058 transitions. [2021-12-21 15:10:16,027 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 24 states, 23 states have (on average 89.47826086956522) internal successors, (2058), 23 states have internal predecessors, (2058), 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) [2021-12-21 15:10:16,029 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 24 states, 24 states have (on average 130.0) internal successors, (3120), 24 states have internal predecessors, (3120), 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) [2021-12-21 15:10:16,030 INFO L81 ComplementDD]: Finished complementDD. Result has 24 states, 24 states have (on average 130.0) internal successors, (3120), 24 states have internal predecessors, (3120), 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) [2021-12-21 15:10:16,030 INFO L186 Difference]: Start difference. First operand has 139 places, 126 transitions, 451 flow. Second operand 23 states and 2058 transitions. [2021-12-21 15:10:16,030 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 161 places, 155 transitions, 725 flow [2021-12-21 15:10:16,035 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 157 places, 155 transitions, 704 flow, removed 5 selfloop flow, removed 4 redundant places. [2021-12-21 15:10:16,037 INFO L242 Difference]: Finished difference. Result has 158 places, 134 transitions, 531 flow [2021-12-21 15:10:16,037 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=130, PETRI_DIFFERENCE_MINUEND_FLOW=432, PETRI_DIFFERENCE_MINUEND_PLACES=135, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=126, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=102, PETRI_DIFFERENCE_SUBTRAHEND_STATES=23, PETRI_FLOW=531, PETRI_PLACES=158, PETRI_TRANSITIONS=134} [2021-12-21 15:10:16,037 INFO L334 CegarLoopForPetriNet]: 123 programPoint places, 35 predicate places. [2021-12-21 15:10:16,037 INFO L470 AbstractCegarLoop]: Abstraction has has 158 places, 134 transitions, 531 flow [2021-12-21 15:10:16,038 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 89.57142857142857) internal successors, (1881), 21 states have internal predecessors, (1881), 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) [2021-12-21 15:10:16,038 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-21 15:10:16,038 INFO L254 CegarLoopForPetriNet]: trace histogram [8, 8, 8, 8, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 15:10:16,069 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2021-12-21 15:10:16,256 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2021-12-21 15:10:16,258 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0INUSE_VIOLATION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION] === [2021-12-21 15:10:16,258 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 15:10:16,258 INFO L85 PathProgramCache]: Analyzing trace with hash 204495269, now seen corresponding path program 1 times [2021-12-21 15:10:16,258 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 15:10:16,259 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [564837561] [2021-12-21 15:10:16,259 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 15:10:16,259 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 15:10:16,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-21 15:10:16,276 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-21 15:10:16,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-21 15:10:16,299 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-21 15:10:16,300 INFO L628 BasicCegarLoop]: Counterexample is feasible [2021-12-21 15:10:16,300 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATION (1 of 2 remaining) [2021-12-21 15:10:16,300 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2021-12-21 15:10:16,300 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2021-12-21 15:10:16,301 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1] [2021-12-21 15:10:16,301 WARN L234 ceAbstractionStarter]: 7 thread instances were not sufficient, I will increase this number and restart the analysis [2021-12-21 15:10:16,301 INFO L513 ceAbstractionStarter]: Constructing petrified ICFG for 8 thread instances. [2021-12-21 15:10:16,308 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of8ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:16,308 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of8ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:16,308 WARN L322 ript$VariableManager]: TermVariabe thrThread1of8ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:16,308 WARN L322 ript$VariableManager]: TermVariabe thrThread1of8ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:16,308 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of8ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:16,308 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of8ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:16,308 WARN L322 ript$VariableManager]: TermVariabe thrThread1of8ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:16,308 WARN L322 ript$VariableManager]: TermVariabe thrThread1of8ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:16,308 WARN L322 ript$VariableManager]: TermVariabe thrThread1of8ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:16,308 WARN L322 ript$VariableManager]: TermVariabe thrThread1of8ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:16,309 WARN L322 ript$VariableManager]: TermVariabe thrThread1of8ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:16,309 WARN L322 ript$VariableManager]: TermVariabe thrThread1of8ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:16,309 WARN L322 ript$VariableManager]: TermVariabe thrThread1of8ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:16,310 WARN L322 ript$VariableManager]: TermVariabe thrThread1of8ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:16,310 WARN L322 ript$VariableManager]: TermVariabe |thrThread4of8ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:16,310 WARN L322 ript$VariableManager]: TermVariabe |thrThread4of8ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:16,310 WARN L322 ript$VariableManager]: TermVariabe thrThread4of8ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:16,310 WARN L322 ript$VariableManager]: TermVariabe thrThread4of8ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:16,310 WARN L322 ript$VariableManager]: TermVariabe |thrThread4of8ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:16,310 WARN L322 ript$VariableManager]: TermVariabe |thrThread4of8ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:16,310 WARN L322 ript$VariableManager]: TermVariabe thrThread4of8ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:16,310 WARN L322 ript$VariableManager]: TermVariabe thrThread4of8ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:16,310 WARN L322 ript$VariableManager]: TermVariabe thrThread4of8ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:16,310 WARN L322 ript$VariableManager]: TermVariabe thrThread4of8ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:16,310 WARN L322 ript$VariableManager]: TermVariabe thrThread4of8ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:16,310 WARN L322 ript$VariableManager]: TermVariabe thrThread4of8ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:16,310 WARN L322 ript$VariableManager]: TermVariabe thrThread4of8ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:16,310 WARN L322 ript$VariableManager]: TermVariabe thrThread4of8ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:16,310 WARN L322 ript$VariableManager]: TermVariabe |thrThread3of8ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:16,310 WARN L322 ript$VariableManager]: TermVariabe |thrThread3of8ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:16,310 WARN L322 ript$VariableManager]: TermVariabe thrThread3of8ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:16,311 WARN L322 ript$VariableManager]: TermVariabe thrThread3of8ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:16,311 WARN L322 ript$VariableManager]: TermVariabe |thrThread3of8ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:16,311 WARN L322 ript$VariableManager]: TermVariabe |thrThread3of8ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:16,311 WARN L322 ript$VariableManager]: TermVariabe thrThread3of8ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:16,311 WARN L322 ript$VariableManager]: TermVariabe thrThread3of8ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:16,311 WARN L322 ript$VariableManager]: TermVariabe thrThread3of8ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:16,311 WARN L322 ript$VariableManager]: TermVariabe thrThread3of8ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:16,311 WARN L322 ript$VariableManager]: TermVariabe thrThread3of8ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:16,311 WARN L322 ript$VariableManager]: TermVariabe thrThread3of8ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:16,311 WARN L322 ript$VariableManager]: TermVariabe thrThread3of8ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:16,311 WARN L322 ript$VariableManager]: TermVariabe thrThread3of8ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:16,311 WARN L322 ript$VariableManager]: TermVariabe |thrThread2of8ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:16,311 WARN L322 ript$VariableManager]: TermVariabe |thrThread2of8ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:16,311 WARN L322 ript$VariableManager]: TermVariabe thrThread2of8ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:16,311 WARN L322 ript$VariableManager]: TermVariabe thrThread2of8ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:16,312 WARN L322 ript$VariableManager]: TermVariabe |thrThread2of8ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:16,312 WARN L322 ript$VariableManager]: TermVariabe |thrThread2of8ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:16,312 WARN L322 ript$VariableManager]: TermVariabe thrThread2of8ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:16,312 WARN L322 ript$VariableManager]: TermVariabe thrThread2of8ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:16,312 WARN L322 ript$VariableManager]: TermVariabe thrThread2of8ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:16,312 WARN L322 ript$VariableManager]: TermVariabe thrThread2of8ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:16,312 WARN L322 ript$VariableManager]: TermVariabe thrThread2of8ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:16,312 WARN L322 ript$VariableManager]: TermVariabe thrThread2of8ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:16,312 WARN L322 ript$VariableManager]: TermVariabe thrThread2of8ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:16,312 WARN L322 ript$VariableManager]: TermVariabe thrThread2of8ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:16,312 WARN L322 ript$VariableManager]: TermVariabe |thrThread5of8ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:16,312 WARN L322 ript$VariableManager]: TermVariabe |thrThread5of8ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:16,312 WARN L322 ript$VariableManager]: TermVariabe thrThread5of8ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:16,312 WARN L322 ript$VariableManager]: TermVariabe thrThread5of8ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:16,312 WARN L322 ript$VariableManager]: TermVariabe |thrThread5of8ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:16,312 WARN L322 ript$VariableManager]: TermVariabe |thrThread5of8ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:16,312 WARN L322 ript$VariableManager]: TermVariabe thrThread5of8ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:16,312 WARN L322 ript$VariableManager]: TermVariabe thrThread5of8ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:16,312 WARN L322 ript$VariableManager]: TermVariabe thrThread5of8ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:16,312 WARN L322 ript$VariableManager]: TermVariabe thrThread5of8ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:16,313 WARN L322 ript$VariableManager]: TermVariabe thrThread5of8ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:16,313 WARN L322 ript$VariableManager]: TermVariabe thrThread5of8ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:16,313 WARN L322 ript$VariableManager]: TermVariabe thrThread5of8ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:16,313 WARN L322 ript$VariableManager]: TermVariabe thrThread5of8ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:16,313 WARN L322 ript$VariableManager]: TermVariabe |thrThread6of8ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:16,313 WARN L322 ript$VariableManager]: TermVariabe |thrThread6of8ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:16,313 WARN L322 ript$VariableManager]: TermVariabe thrThread6of8ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:16,313 WARN L322 ript$VariableManager]: TermVariabe thrThread6of8ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:16,313 WARN L322 ript$VariableManager]: TermVariabe |thrThread6of8ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:16,313 WARN L322 ript$VariableManager]: TermVariabe |thrThread6of8ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:16,313 WARN L322 ript$VariableManager]: TermVariabe thrThread6of8ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:16,313 WARN L322 ript$VariableManager]: TermVariabe thrThread6of8ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:16,313 WARN L322 ript$VariableManager]: TermVariabe thrThread6of8ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:16,313 WARN L322 ript$VariableManager]: TermVariabe thrThread6of8ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:16,313 WARN L322 ript$VariableManager]: TermVariabe thrThread6of8ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:16,313 WARN L322 ript$VariableManager]: TermVariabe thrThread6of8ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:16,313 WARN L322 ript$VariableManager]: TermVariabe thrThread6of8ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:16,314 WARN L322 ript$VariableManager]: TermVariabe thrThread6of8ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:16,314 WARN L322 ript$VariableManager]: TermVariabe |thrThread7of8ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:16,314 WARN L322 ript$VariableManager]: TermVariabe |thrThread7of8ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:16,314 WARN L322 ript$VariableManager]: TermVariabe thrThread7of8ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:16,314 WARN L322 ript$VariableManager]: TermVariabe thrThread7of8ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:16,314 WARN L322 ript$VariableManager]: TermVariabe |thrThread7of8ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:16,314 WARN L322 ript$VariableManager]: TermVariabe |thrThread7of8ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:16,314 WARN L322 ript$VariableManager]: TermVariabe thrThread7of8ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:16,314 WARN L322 ript$VariableManager]: TermVariabe thrThread7of8ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:16,314 WARN L322 ript$VariableManager]: TermVariabe thrThread7of8ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:16,314 WARN L322 ript$VariableManager]: TermVariabe thrThread7of8ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:16,314 WARN L322 ript$VariableManager]: TermVariabe thrThread7of8ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:16,314 WARN L322 ript$VariableManager]: TermVariabe thrThread7of8ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:16,315 WARN L322 ript$VariableManager]: TermVariabe thrThread7of8ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:16,315 WARN L322 ript$VariableManager]: TermVariabe thrThread7of8ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:16,315 WARN L322 ript$VariableManager]: TermVariabe |thrThread8of8ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:16,315 WARN L322 ript$VariableManager]: TermVariabe |thrThread8of8ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:16,315 WARN L322 ript$VariableManager]: TermVariabe thrThread8of8ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:16,315 WARN L322 ript$VariableManager]: TermVariabe thrThread8of8ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:16,315 WARN L322 ript$VariableManager]: TermVariabe |thrThread8of8ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:16,315 WARN L322 ript$VariableManager]: TermVariabe |thrThread8of8ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:16,315 WARN L322 ript$VariableManager]: TermVariabe thrThread8of8ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:16,315 WARN L322 ript$VariableManager]: TermVariabe thrThread8of8ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:16,315 WARN L322 ript$VariableManager]: TermVariabe thrThread8of8ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:16,315 WARN L322 ript$VariableManager]: TermVariabe thrThread8of8ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:16,315 WARN L322 ript$VariableManager]: TermVariabe thrThread8of8ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:16,315 WARN L322 ript$VariableManager]: TermVariabe thrThread8of8ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:16,315 WARN L322 ript$VariableManager]: TermVariabe thrThread8of8ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:16,315 WARN L322 ript$VariableManager]: TermVariabe thrThread8of8ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:16,316 WARN L322 ript$VariableManager]: TermVariabe thrThread1of8ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:16,316 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of8ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:16,316 WARN L322 ript$VariableManager]: TermVariabe thrThread1of8ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:16,316 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of8ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:16,316 WARN L322 ript$VariableManager]: TermVariabe thrThread1of8ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:16,316 WARN L322 ript$VariableManager]: TermVariabe thrThread2of8ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:16,316 WARN L322 ript$VariableManager]: TermVariabe |thrThread2of8ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:16,316 WARN L322 ript$VariableManager]: TermVariabe thrThread2of8ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:16,316 WARN L322 ript$VariableManager]: TermVariabe thrThread2of8ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:16,316 WARN L322 ript$VariableManager]: TermVariabe |thrThread2of8ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:16,316 WARN L322 ript$VariableManager]: TermVariabe thrThread3of8ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:16,316 WARN L322 ript$VariableManager]: TermVariabe |thrThread3of8ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:16,316 WARN L322 ript$VariableManager]: TermVariabe thrThread3of8ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:16,317 WARN L322 ript$VariableManager]: TermVariabe |thrThread3of8ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:16,317 WARN L322 ript$VariableManager]: TermVariabe thrThread3of8ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:16,317 WARN L322 ript$VariableManager]: TermVariabe |thrThread4of8ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:16,317 WARN L322 ript$VariableManager]: TermVariabe thrThread4of8ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:16,317 WARN L322 ript$VariableManager]: TermVariabe |thrThread4of8ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:16,317 WARN L322 ript$VariableManager]: TermVariabe thrThread4of8ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:16,317 WARN L322 ript$VariableManager]: TermVariabe thrThread4of8ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:16,317 WARN L322 ript$VariableManager]: TermVariabe |thrThread5of8ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:16,317 WARN L322 ript$VariableManager]: TermVariabe thrThread5of8ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:16,317 WARN L322 ript$VariableManager]: TermVariabe |thrThread5of8ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:16,317 WARN L322 ript$VariableManager]: TermVariabe thrThread5of8ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:16,317 WARN L322 ript$VariableManager]: TermVariabe thrThread5of8ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:16,318 WARN L322 ript$VariableManager]: TermVariabe |thrThread6of8ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:16,318 WARN L322 ript$VariableManager]: TermVariabe |thrThread6of8ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:16,318 WARN L322 ript$VariableManager]: TermVariabe thrThread6of8ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:16,318 WARN L322 ript$VariableManager]: TermVariabe thrThread6of8ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:16,318 WARN L322 ript$VariableManager]: TermVariabe thrThread6of8ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:16,318 WARN L322 ript$VariableManager]: TermVariabe thrThread7of8ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:16,318 WARN L322 ript$VariableManager]: TermVariabe |thrThread7of8ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:16,318 WARN L322 ript$VariableManager]: TermVariabe |thrThread7of8ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:16,318 WARN L322 ript$VariableManager]: TermVariabe thrThread7of8ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:16,318 WARN L322 ript$VariableManager]: TermVariabe thrThread7of8ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:16,318 WARN L322 ript$VariableManager]: TermVariabe thrThread8of8ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:16,318 WARN L322 ript$VariableManager]: TermVariabe |thrThread8of8ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:16,318 WARN L322 ript$VariableManager]: TermVariabe thrThread8of8ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:16,318 WARN L322 ript$VariableManager]: TermVariabe thrThread8of8ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:16,318 WARN L322 ript$VariableManager]: TermVariabe |thrThread8of8ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:16,321 INFO L148 ThreadInstanceAdder]: Constructed 8 joinOtherThreadTransitions. [2021-12-21 15:10:16,322 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-21 15:10:16,322 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=true, 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 [2021-12-21 15:10:16,322 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-12-21 15:10:16,323 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 140 places, 137 transitions, 394 flow [2021-12-21 15:10:17,069 INFO L129 PetriNetUnfolder]: 1811/10165 cut-off events. [2021-12-21 15:10:17,069 INFO L130 PetriNetUnfolder]: For 1136/1136 co-relation queries the response was YES. [2021-12-21 15:10:17,149 INFO L84 FinitePrefix]: Finished finitePrefix Result has 11250 conditions, 10165 events. 1811/10165 cut-off events. For 1136/1136 co-relation queries the response was YES. Maximal size of possible extension queue 182. Compared 102534 event pairs, 522 based on Foata normal form. 0/8610 useless extension candidates. Maximal degree in co-relation 5573. Up to 1024 conditions per place. [2021-12-21 15:10:17,150 INFO L82 GeneralOperation]: Start removeDead. Operand has 140 places, 137 transitions, 394 flow [2021-12-21 15:10:17,163 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 131 places, 127 transitions, 374 flow [2021-12-21 15:10:17,166 INFO L129 PetriNetUnfolder]: 6/74 cut-off events. [2021-12-21 15:10:17,166 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-12-21 15:10:17,166 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-21 15:10:17,166 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] [2021-12-21 15:10:17,166 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION] === [2021-12-21 15:10:17,166 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 15:10:17,167 INFO L85 PathProgramCache]: Analyzing trace with hash 1961474308, now seen corresponding path program 1 times [2021-12-21 15:10:17,167 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 15:10:17,167 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1740928158] [2021-12-21 15:10:17,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 15:10:17,167 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 15:10:17,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:10:17,194 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 15:10:17,195 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 15:10:17,195 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1740928158] [2021-12-21 15:10:17,195 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1740928158] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 15:10:17,195 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 15:10:17,195 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-21 15:10:17,195 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [610397166] [2021-12-21 15:10:17,195 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 15:10:17,195 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-12-21 15:10:17,195 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 15:10:17,196 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-12-21 15:10:17,196 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-12-21 15:10:17,196 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 115 out of 137 [2021-12-21 15:10:17,196 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 131 places, 127 transitions, 374 flow. Second operand has 2 states, 2 states have (on average 115.5) internal successors, (231), 2 states have internal predecessors, (231), 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) [2021-12-21 15:10:17,196 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-21 15:10:17,196 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 115 of 137 [2021-12-21 15:10:17,196 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-21 15:10:17,781 INFO L129 PetriNetUnfolder]: 1033/7083 cut-off events. [2021-12-21 15:10:17,781 INFO L130 PetriNetUnfolder]: For 3220/3220 co-relation queries the response was YES. [2021-12-21 15:10:17,803 INFO L84 FinitePrefix]: Finished finitePrefix Result has 9201 conditions, 7083 events. 1033/7083 cut-off events. For 3220/3220 co-relation queries the response was YES. Maximal size of possible extension queue 143. Compared 68981 event pairs, 522 based on Foata normal form. 522/7083 useless extension candidates. Maximal degree in co-relation 4483. Up to 1033 conditions per place. [2021-12-21 15:10:17,816 INFO L132 encePairwiseOnDemand]: 133/137 looper letters, 16 selfloop transitions, 0 changer transitions 1/123 dead transitions. [2021-12-21 15:10:17,816 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 132 places, 123 transitions, 398 flow [2021-12-21 15:10:17,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-12-21 15:10:17,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2021-12-21 15:10:17,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 250 transitions. [2021-12-21 15:10:17,817 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.9124087591240876 [2021-12-21 15:10:17,817 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 250 transitions. [2021-12-21 15:10:17,817 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 250 transitions. [2021-12-21 15:10:17,817 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-21 15:10:17,817 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 250 transitions. [2021-12-21 15:10:17,818 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 125.0) internal successors, (250), 2 states have internal predecessors, (250), 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) [2021-12-21 15:10:17,818 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 137.0) internal successors, (411), 3 states have internal predecessors, (411), 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) [2021-12-21 15:10:17,818 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 137.0) internal successors, (411), 3 states have internal predecessors, (411), 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) [2021-12-21 15:10:17,818 INFO L186 Difference]: Start difference. First operand has 131 places, 127 transitions, 374 flow. Second operand 2 states and 250 transitions. [2021-12-21 15:10:17,818 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 132 places, 123 transitions, 398 flow [2021-12-21 15:10:17,820 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 132 places, 123 transitions, 398 flow, removed 0 selfloop flow, removed 0 redundant places. [2021-12-21 15:10:17,821 INFO L242 Difference]: Finished difference. Result has 132 places, 122 transitions, 364 flow [2021-12-21 15:10:17,821 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=137, PETRI_DIFFERENCE_MINUEND_FLOW=366, PETRI_DIFFERENCE_MINUEND_PLACES=131, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=123, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=123, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=364, PETRI_PLACES=132, PETRI_TRANSITIONS=122} [2021-12-21 15:10:17,821 INFO L334 CegarLoopForPetriNet]: 131 programPoint places, 1 predicate places. [2021-12-21 15:10:17,821 INFO L470 AbstractCegarLoop]: Abstraction has has 132 places, 122 transitions, 364 flow [2021-12-21 15:10:17,821 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 115.5) internal successors, (231), 2 states have internal predecessors, (231), 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) [2021-12-21 15:10:17,821 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-21 15:10:17,821 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] [2021-12-21 15:10:17,822 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2021-12-21 15:10:17,822 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION] === [2021-12-21 15:10:17,822 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 15:10:17,822 INFO L85 PathProgramCache]: Analyzing trace with hash -1445989307, now seen corresponding path program 1 times [2021-12-21 15:10:17,822 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 15:10:17,822 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1159767342] [2021-12-21 15:10:17,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 15:10:17,822 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 15:10:17,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:10:17,856 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 15:10:17,856 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 15:10:17,856 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1159767342] [2021-12-21 15:10:17,856 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1159767342] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 15:10:17,856 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 15:10:17,856 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-21 15:10:17,856 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2035773293] [2021-12-21 15:10:17,857 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 15:10:17,857 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-21 15:10:17,857 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 15:10:17,857 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-21 15:10:17,857 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2021-12-21 15:10:17,858 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 137 [2021-12-21 15:10:17,858 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 132 places, 122 transitions, 364 flow. Second operand has 6 states, 6 states have (on average 91.16666666666667) internal successors, (547), 6 states have internal predecessors, (547), 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) [2021-12-21 15:10:17,858 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-21 15:10:17,858 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 137 [2021-12-21 15:10:17,858 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-21 15:10:18,779 INFO L129 PetriNetUnfolder]: 1052/8719 cut-off events. [2021-12-21 15:10:18,779 INFO L130 PetriNetUnfolder]: For 1164/1164 co-relation queries the response was YES. [2021-12-21 15:10:18,809 INFO L84 FinitePrefix]: Finished finitePrefix Result has 14849 conditions, 8719 events. 1052/8719 cut-off events. For 1164/1164 co-relation queries the response was YES. Maximal size of possible extension queue 193. Compared 91882 event pairs, 303 based on Foata normal form. 0/8201 useless extension candidates. Maximal degree in co-relation 14838. Up to 3888 conditions per place. [2021-12-21 15:10:18,825 INFO L132 encePairwiseOnDemand]: 125/137 looper letters, 52 selfloop transitions, 9 changer transitions 0/142 dead transitions. [2021-12-21 15:10:18,826 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 136 places, 142 transitions, 550 flow [2021-12-21 15:10:18,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-21 15:10:18,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2021-12-21 15:10:18,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 598 transitions. [2021-12-21 15:10:18,827 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7274939172749392 [2021-12-21 15:10:18,827 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 598 transitions. [2021-12-21 15:10:18,827 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 598 transitions. [2021-12-21 15:10:18,827 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-21 15:10:18,827 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 598 transitions. [2021-12-21 15:10:18,828 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 99.66666666666667) internal successors, (598), 6 states have internal predecessors, (598), 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) [2021-12-21 15:10:18,828 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 137.0) internal successors, (959), 7 states have internal predecessors, (959), 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) [2021-12-21 15:10:18,829 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 137.0) internal successors, (959), 7 states have internal predecessors, (959), 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) [2021-12-21 15:10:18,829 INFO L186 Difference]: Start difference. First operand has 132 places, 122 transitions, 364 flow. Second operand 6 states and 598 transitions. [2021-12-21 15:10:18,829 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 136 places, 142 transitions, 550 flow [2021-12-21 15:10:18,830 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 136 places, 142 transitions, 550 flow, removed 0 selfloop flow, removed 0 redundant places. [2021-12-21 15:10:18,831 INFO L242 Difference]: Finished difference. Result has 137 places, 125 transitions, 406 flow [2021-12-21 15:10:18,831 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=137, PETRI_DIFFERENCE_MINUEND_FLOW=364, PETRI_DIFFERENCE_MINUEND_PLACES=131, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=122, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=113, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=406, PETRI_PLACES=137, PETRI_TRANSITIONS=125} [2021-12-21 15:10:18,832 INFO L334 CegarLoopForPetriNet]: 131 programPoint places, 6 predicate places. [2021-12-21 15:10:18,832 INFO L470 AbstractCegarLoop]: Abstraction has has 137 places, 125 transitions, 406 flow [2021-12-21 15:10:18,832 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 91.16666666666667) internal successors, (547), 6 states have internal predecessors, (547), 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) [2021-12-21 15:10:18,832 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-21 15:10:18,832 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] [2021-12-21 15:10:18,832 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2021-12-21 15:10:18,832 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION] === [2021-12-21 15:10:18,832 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 15:10:18,833 INFO L85 PathProgramCache]: Analyzing trace with hash 1355647550, now seen corresponding path program 1 times [2021-12-21 15:10:18,833 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 15:10:18,833 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [337578243] [2021-12-21 15:10:18,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 15:10:18,833 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 15:10:18,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:10:18,885 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-12-21 15:10:18,885 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 15:10:18,886 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [337578243] [2021-12-21 15:10:18,886 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [337578243] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-21 15:10:18,886 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2077058399] [2021-12-21 15:10:18,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 15:10:18,886 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 15:10:18,886 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 15:10:18,900 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-21 15:10:18,901 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-12-21 15:10:19,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:10:19,009 INFO L263 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 9 conjunts are in the unsatisfiable core [2021-12-21 15:10:19,010 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 15:10:19,270 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-12-21 15:10:19,271 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-21 15:10:19,436 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-12-21 15:10:19,436 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2077058399] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-21 15:10:19,436 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-21 15:10:19,436 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 20 [2021-12-21 15:10:19,437 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1565440037] [2021-12-21 15:10:19,437 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-21 15:10:19,437 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-12-21 15:10:19,438 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 15:10:19,438 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-12-21 15:10:19,439 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=104, Invalid=276, Unknown=0, NotChecked=0, Total=380 [2021-12-21 15:10:19,440 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 88 out of 137 [2021-12-21 15:10:19,441 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 137 places, 125 transitions, 406 flow. Second operand has 20 states, 20 states have (on average 90.6) internal successors, (1812), 20 states have internal predecessors, (1812), 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) [2021-12-21 15:10:19,441 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-21 15:10:19,441 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 88 of 137 [2021-12-21 15:10:19,441 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-21 15:10:20,675 INFO L129 PetriNetUnfolder]: 1049/8699 cut-off events. [2021-12-21 15:10:20,676 INFO L130 PetriNetUnfolder]: For 2440/2440 co-relation queries the response was YES. [2021-12-21 15:10:20,719 INFO L84 FinitePrefix]: Finished finitePrefix Result has 16687 conditions, 8699 events. 1049/8699 cut-off events. For 2440/2440 co-relation queries the response was YES. Maximal size of possible extension queue 193. Compared 92161 event pairs, 304 based on Foata normal form. 2/8701 useless extension candidates. Maximal degree in co-relation 16674. Up to 2565 conditions per place. [2021-12-21 15:10:20,738 INFO L132 encePairwiseOnDemand]: 122/137 looper letters, 49 selfloop transitions, 20 changer transitions 0/149 dead transitions. [2021-12-21 15:10:20,738 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 148 places, 149 transitions, 618 flow [2021-12-21 15:10:20,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-12-21 15:10:20,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2021-12-21 15:10:20,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1127 transitions. [2021-12-21 15:10:20,740 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.6855231143552312 [2021-12-21 15:10:20,740 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 1127 transitions. [2021-12-21 15:10:20,740 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 1127 transitions. [2021-12-21 15:10:20,740 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-21 15:10:20,740 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 1127 transitions. [2021-12-21 15:10:20,741 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 93.91666666666667) internal successors, (1127), 12 states have internal predecessors, (1127), 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) [2021-12-21 15:10:20,743 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 137.0) internal successors, (1781), 13 states have internal predecessors, (1781), 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) [2021-12-21 15:10:20,743 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 137.0) internal successors, (1781), 13 states have internal predecessors, (1781), 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) [2021-12-21 15:10:20,743 INFO L186 Difference]: Start difference. First operand has 137 places, 125 transitions, 406 flow. Second operand 12 states and 1127 transitions. [2021-12-21 15:10:20,743 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 148 places, 149 transitions, 618 flow [2021-12-21 15:10:20,747 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 144 places, 149 transitions, 606 flow, removed 0 selfloop flow, removed 4 redundant places. [2021-12-21 15:10:20,749 INFO L242 Difference]: Finished difference. Result has 147 places, 133 transitions, 487 flow [2021-12-21 15:10:20,749 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=137, PETRI_DIFFERENCE_MINUEND_FLOW=394, PETRI_DIFFERENCE_MINUEND_PLACES=133, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=125, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=108, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=487, PETRI_PLACES=147, PETRI_TRANSITIONS=133} [2021-12-21 15:10:20,749 INFO L334 CegarLoopForPetriNet]: 131 programPoint places, 16 predicate places. [2021-12-21 15:10:20,750 INFO L470 AbstractCegarLoop]: Abstraction has has 147 places, 133 transitions, 487 flow [2021-12-21 15:10:20,750 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 90.6) internal successors, (1812), 20 states have internal predecessors, (1812), 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) [2021-12-21 15:10:20,750 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-21 15:10:20,750 INFO L254 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 15:10:20,780 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2021-12-21 15:10:20,963 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 15:10:20,964 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION] === [2021-12-21 15:10:20,964 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 15:10:20,964 INFO L85 PathProgramCache]: Analyzing trace with hash 224936797, now seen corresponding path program 1 times [2021-12-21 15:10:20,964 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 15:10:20,964 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1001730582] [2021-12-21 15:10:20,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 15:10:20,965 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 15:10:20,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:10:21,067 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 2 proven. 32 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-21 15:10:21,067 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 15:10:21,067 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1001730582] [2021-12-21 15:10:21,067 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1001730582] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-21 15:10:21,068 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [121056592] [2021-12-21 15:10:21,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 15:10:21,068 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 15:10:21,068 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 15:10:21,069 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-21 15:10:21,070 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-12-21 15:10:21,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:10:21,170 INFO L263 TraceCheckSpWp]: Trace formula consists of 199 conjuncts, 10 conjunts are in the unsatisfiable core [2021-12-21 15:10:21,171 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 15:10:21,369 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 12 proven. 22 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-21 15:10:21,369 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-21 15:10:21,526 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 12 proven. 22 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-21 15:10:21,526 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [121056592] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-21 15:10:21,526 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-21 15:10:21,526 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 21 [2021-12-21 15:10:21,527 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1062180551] [2021-12-21 15:10:21,527 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-21 15:10:21,527 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2021-12-21 15:10:21,527 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 15:10:21,527 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-12-21 15:10:21,527 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=341, Unknown=0, NotChecked=0, Total=420 [2021-12-21 15:10:21,528 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 91 out of 137 [2021-12-21 15:10:21,529 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 147 places, 133 transitions, 487 flow. Second operand has 21 states, 21 states have (on average 94.57142857142857) internal successors, (1986), 21 states have internal predecessors, (1986), 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) [2021-12-21 15:10:21,529 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-21 15:10:21,529 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 91 of 137 [2021-12-21 15:10:21,529 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-21 15:10:22,736 INFO L129 PetriNetUnfolder]: 1098/8331 cut-off events. [2021-12-21 15:10:22,736 INFO L130 PetriNetUnfolder]: For 5494/5494 co-relation queries the response was YES. [2021-12-21 15:10:22,758 INFO L84 FinitePrefix]: Finished finitePrefix Result has 19416 conditions, 8331 events. 1098/8331 cut-off events. For 5494/5494 co-relation queries the response was YES. Maximal size of possible extension queue 222. Compared 89485 event pairs, 140 based on Foata normal form. 116/8447 useless extension candidates. Maximal degree in co-relation 19400. Up to 2468 conditions per place. [2021-12-21 15:10:22,774 INFO L132 encePairwiseOnDemand]: 122/137 looper letters, 53 selfloop transitions, 29 changer transitions 0/164 dead transitions. [2021-12-21 15:10:22,774 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 169 places, 164 transitions, 779 flow [2021-12-21 15:10:22,775 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-12-21 15:10:22,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2021-12-21 15:10:22,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 2177 transitions. [2021-12-21 15:10:22,776 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.6908917803871787 [2021-12-21 15:10:22,777 INFO L72 ComplementDD]: Start complementDD. Operand 23 states and 2177 transitions. [2021-12-21 15:10:22,777 INFO L73 IsDeterministic]: Start isDeterministic. Operand 23 states and 2177 transitions. [2021-12-21 15:10:22,777 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-21 15:10:22,777 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 23 states and 2177 transitions. [2021-12-21 15:10:22,779 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 24 states, 23 states have (on average 94.65217391304348) internal successors, (2177), 23 states have internal predecessors, (2177), 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) [2021-12-21 15:10:22,781 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 24 states, 24 states have (on average 137.0) internal successors, (3288), 24 states have internal predecessors, (3288), 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) [2021-12-21 15:10:22,782 INFO L81 ComplementDD]: Finished complementDD. Result has 24 states, 24 states have (on average 137.0) internal successors, (3288), 24 states have internal predecessors, (3288), 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) [2021-12-21 15:10:22,783 INFO L186 Difference]: Start difference. First operand has 147 places, 133 transitions, 487 flow. Second operand 23 states and 2177 transitions. [2021-12-21 15:10:22,783 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 169 places, 164 transitions, 779 flow [2021-12-21 15:10:22,795 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 165 places, 164 transitions, 758 flow, removed 5 selfloop flow, removed 4 redundant places. [2021-12-21 15:10:22,799 INFO L242 Difference]: Finished difference. Result has 166 places, 141 transitions, 567 flow [2021-12-21 15:10:22,799 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=137, PETRI_DIFFERENCE_MINUEND_FLOW=468, PETRI_DIFFERENCE_MINUEND_PLACES=143, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=133, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=109, PETRI_DIFFERENCE_SUBTRAHEND_STATES=23, PETRI_FLOW=567, PETRI_PLACES=166, PETRI_TRANSITIONS=141} [2021-12-21 15:10:22,799 INFO L334 CegarLoopForPetriNet]: 131 programPoint places, 35 predicate places. [2021-12-21 15:10:22,799 INFO L470 AbstractCegarLoop]: Abstraction has has 166 places, 141 transitions, 567 flow [2021-12-21 15:10:22,800 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 94.57142857142857) internal successors, (1986), 21 states have internal predecessors, (1986), 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) [2021-12-21 15:10:22,800 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-21 15:10:22,800 INFO L254 CegarLoopForPetriNet]: trace histogram [9, 9, 9, 9, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 15:10:22,835 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2021-12-21 15:10:23,020 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable30 [2021-12-21 15:10:23,020 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0INUSE_VIOLATION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION] === [2021-12-21 15:10:23,020 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 15:10:23,021 INFO L85 PathProgramCache]: Analyzing trace with hash -523637086, now seen corresponding path program 1 times [2021-12-21 15:10:23,021 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 15:10:23,021 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2112083341] [2021-12-21 15:10:23,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 15:10:23,021 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 15:10:23,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-21 15:10:23,038 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-21 15:10:23,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-21 15:10:23,054 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-21 15:10:23,055 INFO L628 BasicCegarLoop]: Counterexample is feasible [2021-12-21 15:10:23,055 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATION (1 of 2 remaining) [2021-12-21 15:10:23,055 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2021-12-21 15:10:23,055 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2021-12-21 15:10:23,055 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1] [2021-12-21 15:10:23,056 WARN L234 ceAbstractionStarter]: 8 thread instances were not sufficient, I will increase this number and restart the analysis [2021-12-21 15:10:23,056 INFO L513 ceAbstractionStarter]: Constructing petrified ICFG for 9 thread instances. [2021-12-21 15:10:23,067 WARN L322 ript$VariableManager]: TermVariabe |thrThread6of9ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:23,067 WARN L322 ript$VariableManager]: TermVariabe |thrThread6of9ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:23,068 WARN L322 ript$VariableManager]: TermVariabe thrThread6of9ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:23,068 WARN L322 ript$VariableManager]: TermVariabe thrThread6of9ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:23,068 WARN L322 ript$VariableManager]: TermVariabe |thrThread6of9ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:23,068 WARN L322 ript$VariableManager]: TermVariabe |thrThread6of9ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:23,068 WARN L322 ript$VariableManager]: TermVariabe thrThread6of9ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:23,068 WARN L322 ript$VariableManager]: TermVariabe thrThread6of9ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:23,068 WARN L322 ript$VariableManager]: TermVariabe thrThread6of9ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:23,068 WARN L322 ript$VariableManager]: TermVariabe thrThread6of9ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:23,068 WARN L322 ript$VariableManager]: TermVariabe thrThread6of9ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:23,069 WARN L322 ript$VariableManager]: TermVariabe thrThread6of9ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:23,069 WARN L322 ript$VariableManager]: TermVariabe thrThread6of9ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:23,069 WARN L322 ript$VariableManager]: TermVariabe thrThread6of9ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:23,069 WARN L322 ript$VariableManager]: TermVariabe |thrThread5of9ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:23,069 WARN L322 ript$VariableManager]: TermVariabe |thrThread5of9ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:23,069 WARN L322 ript$VariableManager]: TermVariabe thrThread5of9ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:23,069 WARN L322 ript$VariableManager]: TermVariabe thrThread5of9ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:23,069 WARN L322 ript$VariableManager]: TermVariabe |thrThread5of9ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:23,069 WARN L322 ript$VariableManager]: TermVariabe |thrThread5of9ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:23,070 WARN L322 ript$VariableManager]: TermVariabe thrThread5of9ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:23,070 WARN L322 ript$VariableManager]: TermVariabe thrThread5of9ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:23,070 WARN L322 ript$VariableManager]: TermVariabe thrThread5of9ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:23,070 WARN L322 ript$VariableManager]: TermVariabe thrThread5of9ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:23,070 WARN L322 ript$VariableManager]: TermVariabe thrThread5of9ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:23,070 WARN L322 ript$VariableManager]: TermVariabe thrThread5of9ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:23,070 WARN L322 ript$VariableManager]: TermVariabe thrThread5of9ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:23,070 WARN L322 ript$VariableManager]: TermVariabe thrThread5of9ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:23,071 WARN L322 ript$VariableManager]: TermVariabe |thrThread7of9ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:23,071 WARN L322 ript$VariableManager]: TermVariabe |thrThread7of9ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:23,071 WARN L322 ript$VariableManager]: TermVariabe thrThread7of9ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:23,071 WARN L322 ript$VariableManager]: TermVariabe thrThread7of9ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:23,071 WARN L322 ript$VariableManager]: TermVariabe |thrThread7of9ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:23,071 WARN L322 ript$VariableManager]: TermVariabe |thrThread7of9ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:23,071 WARN L322 ript$VariableManager]: TermVariabe thrThread7of9ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:23,072 WARN L322 ript$VariableManager]: TermVariabe thrThread7of9ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:23,072 WARN L322 ript$VariableManager]: TermVariabe thrThread7of9ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:23,072 WARN L322 ript$VariableManager]: TermVariabe thrThread7of9ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:23,072 WARN L322 ript$VariableManager]: TermVariabe thrThread7of9ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:23,072 WARN L322 ript$VariableManager]: TermVariabe thrThread7of9ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:23,072 WARN L322 ript$VariableManager]: TermVariabe thrThread7of9ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:23,072 WARN L322 ript$VariableManager]: TermVariabe thrThread7of9ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:23,073 WARN L322 ript$VariableManager]: TermVariabe |thrThread9of9ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:23,073 WARN L322 ript$VariableManager]: TermVariabe |thrThread9of9ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:23,073 WARN L322 ript$VariableManager]: TermVariabe thrThread9of9ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:23,073 WARN L322 ript$VariableManager]: TermVariabe thrThread9of9ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:23,073 WARN L322 ript$VariableManager]: TermVariabe |thrThread9of9ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:23,073 WARN L322 ript$VariableManager]: TermVariabe |thrThread9of9ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:23,073 WARN L322 ript$VariableManager]: TermVariabe thrThread9of9ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:23,073 WARN L322 ript$VariableManager]: TermVariabe thrThread9of9ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:23,073 WARN L322 ript$VariableManager]: TermVariabe thrThread9of9ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:23,074 WARN L322 ript$VariableManager]: TermVariabe thrThread9of9ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:23,074 WARN L322 ript$VariableManager]: TermVariabe thrThread9of9ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:23,074 WARN L322 ript$VariableManager]: TermVariabe thrThread9of9ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:23,074 WARN L322 ript$VariableManager]: TermVariabe thrThread9of9ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:23,074 WARN L322 ript$VariableManager]: TermVariabe thrThread9of9ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:23,074 WARN L322 ript$VariableManager]: TermVariabe |thrThread2of9ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:23,074 WARN L322 ript$VariableManager]: TermVariabe |thrThread2of9ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:23,074 WARN L322 ript$VariableManager]: TermVariabe thrThread2of9ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:23,074 WARN L322 ript$VariableManager]: TermVariabe thrThread2of9ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:23,075 WARN L322 ript$VariableManager]: TermVariabe |thrThread2of9ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:23,075 WARN L322 ript$VariableManager]: TermVariabe |thrThread2of9ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:23,075 WARN L322 ript$VariableManager]: TermVariabe thrThread2of9ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:23,075 WARN L322 ript$VariableManager]: TermVariabe thrThread2of9ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:23,075 WARN L322 ript$VariableManager]: TermVariabe thrThread2of9ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:23,075 WARN L322 ript$VariableManager]: TermVariabe thrThread2of9ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:23,075 WARN L322 ript$VariableManager]: TermVariabe thrThread2of9ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:23,075 WARN L322 ript$VariableManager]: TermVariabe thrThread2of9ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:23,075 WARN L322 ript$VariableManager]: TermVariabe thrThread2of9ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:23,076 WARN L322 ript$VariableManager]: TermVariabe thrThread2of9ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:23,076 WARN L322 ript$VariableManager]: TermVariabe |thrThread8of9ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:23,076 WARN L322 ript$VariableManager]: TermVariabe |thrThread8of9ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:23,076 WARN L322 ript$VariableManager]: TermVariabe thrThread8of9ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:23,076 WARN L322 ript$VariableManager]: TermVariabe thrThread8of9ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:23,076 WARN L322 ript$VariableManager]: TermVariabe |thrThread8of9ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:23,076 WARN L322 ript$VariableManager]: TermVariabe |thrThread8of9ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:23,076 WARN L322 ript$VariableManager]: TermVariabe thrThread8of9ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:23,076 WARN L322 ript$VariableManager]: TermVariabe thrThread8of9ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:23,077 WARN L322 ript$VariableManager]: TermVariabe thrThread8of9ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:23,077 WARN L322 ript$VariableManager]: TermVariabe thrThread8of9ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:23,077 WARN L322 ript$VariableManager]: TermVariabe thrThread8of9ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:23,077 WARN L322 ript$VariableManager]: TermVariabe thrThread8of9ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:23,077 WARN L322 ript$VariableManager]: TermVariabe thrThread8of9ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:23,077 WARN L322 ript$VariableManager]: TermVariabe thrThread8of9ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:23,078 WARN L322 ript$VariableManager]: TermVariabe |thrThread3of9ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:23,078 WARN L322 ript$VariableManager]: TermVariabe |thrThread3of9ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:23,078 WARN L322 ript$VariableManager]: TermVariabe thrThread3of9ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:23,078 WARN L322 ript$VariableManager]: TermVariabe thrThread3of9ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:23,078 WARN L322 ript$VariableManager]: TermVariabe |thrThread3of9ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:23,078 WARN L322 ript$VariableManager]: TermVariabe |thrThread3of9ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:23,078 WARN L322 ript$VariableManager]: TermVariabe thrThread3of9ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:23,078 WARN L322 ript$VariableManager]: TermVariabe thrThread3of9ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:23,079 WARN L322 ript$VariableManager]: TermVariabe thrThread3of9ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:23,079 WARN L322 ript$VariableManager]: TermVariabe thrThread3of9ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:23,079 WARN L322 ript$VariableManager]: TermVariabe thrThread3of9ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:23,079 WARN L322 ript$VariableManager]: TermVariabe thrThread3of9ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:23,079 WARN L322 ript$VariableManager]: TermVariabe thrThread3of9ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:23,079 WARN L322 ript$VariableManager]: TermVariabe thrThread3of9ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:23,079 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of9ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:23,080 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of9ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:23,080 WARN L322 ript$VariableManager]: TermVariabe thrThread1of9ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:23,080 WARN L322 ript$VariableManager]: TermVariabe thrThread1of9ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:23,080 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of9ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:23,080 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of9ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:23,080 WARN L322 ript$VariableManager]: TermVariabe thrThread1of9ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:23,080 WARN L322 ript$VariableManager]: TermVariabe thrThread1of9ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:23,080 WARN L322 ript$VariableManager]: TermVariabe thrThread1of9ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:23,080 WARN L322 ript$VariableManager]: TermVariabe thrThread1of9ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:23,080 WARN L322 ript$VariableManager]: TermVariabe thrThread1of9ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:23,081 WARN L322 ript$VariableManager]: TermVariabe thrThread1of9ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:23,081 WARN L322 ript$VariableManager]: TermVariabe thrThread1of9ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:23,081 WARN L322 ript$VariableManager]: TermVariabe thrThread1of9ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:23,081 WARN L322 ript$VariableManager]: TermVariabe |thrThread4of9ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:23,081 WARN L322 ript$VariableManager]: TermVariabe |thrThread4of9ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:23,081 WARN L322 ript$VariableManager]: TermVariabe thrThread4of9ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:23,081 WARN L322 ript$VariableManager]: TermVariabe thrThread4of9ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:23,081 WARN L322 ript$VariableManager]: TermVariabe |thrThread4of9ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:23,082 WARN L322 ript$VariableManager]: TermVariabe |thrThread4of9ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:23,082 WARN L322 ript$VariableManager]: TermVariabe thrThread4of9ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:23,082 WARN L322 ript$VariableManager]: TermVariabe thrThread4of9ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:23,082 WARN L322 ript$VariableManager]: TermVariabe thrThread4of9ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:23,082 WARN L322 ript$VariableManager]: TermVariabe thrThread4of9ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:23,082 WARN L322 ript$VariableManager]: TermVariabe thrThread4of9ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:23,082 WARN L322 ript$VariableManager]: TermVariabe thrThread4of9ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:23,082 WARN L322 ript$VariableManager]: TermVariabe thrThread4of9ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:23,083 WARN L322 ript$VariableManager]: TermVariabe thrThread4of9ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:23,083 WARN L322 ript$VariableManager]: TermVariabe thrThread1of9ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:23,083 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of9ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:23,084 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of9ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:23,084 WARN L322 ript$VariableManager]: TermVariabe thrThread1of9ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:23,084 WARN L322 ript$VariableManager]: TermVariabe thrThread1of9ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:23,084 WARN L322 ript$VariableManager]: TermVariabe |thrThread2of9ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:23,084 WARN L322 ript$VariableManager]: TermVariabe thrThread2of9ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:23,084 WARN L322 ript$VariableManager]: TermVariabe |thrThread2of9ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:23,085 WARN L322 ript$VariableManager]: TermVariabe thrThread2of9ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:23,085 WARN L322 ript$VariableManager]: TermVariabe thrThread2of9ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:23,085 WARN L322 ript$VariableManager]: TermVariabe |thrThread3of9ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:23,085 WARN L322 ript$VariableManager]: TermVariabe thrThread3of9ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:23,085 WARN L322 ript$VariableManager]: TermVariabe |thrThread3of9ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:23,085 WARN L322 ript$VariableManager]: TermVariabe thrThread3of9ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:23,085 WARN L322 ript$VariableManager]: TermVariabe thrThread3of9ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:23,086 WARN L322 ript$VariableManager]: TermVariabe thrThread4of9ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:23,086 WARN L322 ript$VariableManager]: TermVariabe thrThread4of9ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:23,086 WARN L322 ript$VariableManager]: TermVariabe |thrThread4of9ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:23,086 WARN L322 ript$VariableManager]: TermVariabe thrThread4of9ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:23,086 WARN L322 ript$VariableManager]: TermVariabe |thrThread4of9ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:23,087 WARN L322 ript$VariableManager]: TermVariabe thrThread5of9ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:23,087 WARN L322 ript$VariableManager]: TermVariabe |thrThread5of9ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:23,087 WARN L322 ript$VariableManager]: TermVariabe thrThread5of9ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:23,087 WARN L322 ript$VariableManager]: TermVariabe |thrThread5of9ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:23,087 WARN L322 ript$VariableManager]: TermVariabe thrThread5of9ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:23,087 WARN L322 ript$VariableManager]: TermVariabe thrThread6of9ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:23,088 WARN L322 ript$VariableManager]: TermVariabe |thrThread6of9ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:23,088 WARN L322 ript$VariableManager]: TermVariabe thrThread6of9ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:23,088 WARN L322 ript$VariableManager]: TermVariabe thrThread6of9ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:23,088 WARN L322 ript$VariableManager]: TermVariabe |thrThread6of9ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:23,088 WARN L322 ript$VariableManager]: TermVariabe thrThread7of9ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:23,088 WARN L322 ript$VariableManager]: TermVariabe thrThread7of9ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:23,089 WARN L322 ript$VariableManager]: TermVariabe |thrThread7of9ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:23,089 WARN L322 ript$VariableManager]: TermVariabe thrThread7of9ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:23,089 WARN L322 ript$VariableManager]: TermVariabe |thrThread7of9ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:23,089 WARN L322 ript$VariableManager]: TermVariabe thrThread8of9ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:23,089 WARN L322 ript$VariableManager]: TermVariabe |thrThread8of9ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:23,089 WARN L322 ript$VariableManager]: TermVariabe thrThread8of9ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:23,089 WARN L322 ript$VariableManager]: TermVariabe thrThread8of9ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:23,090 WARN L322 ript$VariableManager]: TermVariabe |thrThread8of9ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:23,090 WARN L322 ript$VariableManager]: TermVariabe |thrThread9of9ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:23,090 WARN L322 ript$VariableManager]: TermVariabe thrThread9of9ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:23,090 WARN L322 ript$VariableManager]: TermVariabe thrThread9of9ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:23,091 WARN L322 ript$VariableManager]: TermVariabe thrThread9of9ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:23,091 WARN L322 ript$VariableManager]: TermVariabe |thrThread9of9ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:23,095 INFO L148 ThreadInstanceAdder]: Constructed 9 joinOtherThreadTransitions. [2021-12-21 15:10:23,096 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-21 15:10:23,097 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=true, 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 [2021-12-21 15:10:23,097 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-12-21 15:10:23,098 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 148 places, 144 transitions, 432 flow [2021-12-21 15:10:24,869 INFO L129 PetriNetUnfolder]: 3861/20423 cut-off events. [2021-12-21 15:10:24,869 INFO L130 PetriNetUnfolder]: For 2460/2460 co-relation queries the response was YES. [2021-12-21 15:10:24,975 INFO L84 FinitePrefix]: Finished finitePrefix Result has 22800 conditions, 20423 events. 3861/20423 cut-off events. For 2460/2460 co-relation queries the response was YES. Maximal size of possible extension queue 353. Compared 236307 event pairs, 1291 based on Foata normal form. 0/17330 useless extension candidates. Maximal degree in co-relation 11232. Up to 2304 conditions per place. [2021-12-21 15:10:24,976 INFO L82 GeneralOperation]: Start removeDead. Operand has 148 places, 144 transitions, 432 flow [2021-12-21 15:10:25,016 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 139 places, 134 transitions, 412 flow [2021-12-21 15:10:25,018 INFO L129 PetriNetUnfolder]: 7/77 cut-off events. [2021-12-21 15:10:25,018 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-12-21 15:10:25,018 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-21 15:10:25,019 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] [2021-12-21 15:10:25,019 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION] === [2021-12-21 15:10:25,019 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 15:10:25,019 INFO L85 PathProgramCache]: Analyzing trace with hash 507427541, now seen corresponding path program 1 times [2021-12-21 15:10:25,019 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 15:10:25,019 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1418814663] [2021-12-21 15:10:25,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 15:10:25,020 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 15:10:25,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:10:25,052 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 15:10:25,052 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 15:10:25,052 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1418814663] [2021-12-21 15:10:25,052 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1418814663] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 15:10:25,052 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 15:10:25,053 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-21 15:10:25,053 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1734794254] [2021-12-21 15:10:25,053 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 15:10:25,053 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-21 15:10:25,053 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 15:10:25,053 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-21 15:10:25,054 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2021-12-21 15:10:25,054 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 94 out of 144 [2021-12-21 15:10:25,054 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 139 places, 134 transitions, 412 flow. Second operand has 6 states, 6 states have (on average 96.16666666666667) internal successors, (577), 6 states have internal predecessors, (577), 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) [2021-12-21 15:10:25,055 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-21 15:10:25,055 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 94 of 144 [2021-12-21 15:10:25,055 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-21 15:10:26,927 INFO L129 PetriNetUnfolder]: 2340/17475 cut-off events. [2021-12-21 15:10:26,927 INFO L130 PetriNetUnfolder]: For 2496/2496 co-relation queries the response was YES. [2021-12-21 15:10:26,991 INFO L84 FinitePrefix]: Finished finitePrefix Result has 30058 conditions, 17475 events. 2340/17475 cut-off events. For 2496/2496 co-relation queries the response was YES. Maximal size of possible extension queue 363. Compared 210326 event pairs, 825 based on Foata normal form. 1/16444 useless extension candidates. Maximal degree in co-relation 14831. Up to 7996 conditions per place. [2021-12-21 15:10:27,026 INFO L132 encePairwiseOnDemand]: 128/144 looper letters, 55 selfloop transitions, 9 changer transitions 1/151 dead transitions. [2021-12-21 15:10:27,026 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 144 places, 151 transitions, 603 flow [2021-12-21 15:10:27,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-21 15:10:27,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2021-12-21 15:10:27,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 639 transitions. [2021-12-21 15:10:27,028 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7395833333333334 [2021-12-21 15:10:27,028 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 639 transitions. [2021-12-21 15:10:27,028 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 639 transitions. [2021-12-21 15:10:27,028 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-21 15:10:27,028 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 639 transitions. [2021-12-21 15:10:27,029 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 106.5) internal successors, (639), 6 states have internal predecessors, (639), 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) [2021-12-21 15:10:27,030 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 144.0) internal successors, (1008), 7 states have internal predecessors, (1008), 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) [2021-12-21 15:10:27,030 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 144.0) internal successors, (1008), 7 states have internal predecessors, (1008), 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) [2021-12-21 15:10:27,030 INFO L186 Difference]: Start difference. First operand has 139 places, 134 transitions, 412 flow. Second operand 6 states and 639 transitions. [2021-12-21 15:10:27,030 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 144 places, 151 transitions, 603 flow [2021-12-21 15:10:27,033 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 144 places, 151 transitions, 603 flow, removed 0 selfloop flow, removed 0 redundant places. [2021-12-21 15:10:27,035 INFO L242 Difference]: Finished difference. Result has 145 places, 132 transitions, 444 flow [2021-12-21 15:10:27,035 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=144, PETRI_DIFFERENCE_MINUEND_FLOW=404, PETRI_DIFFERENCE_MINUEND_PLACES=139, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=130, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=121, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=444, PETRI_PLACES=145, PETRI_TRANSITIONS=132} [2021-12-21 15:10:27,035 INFO L334 CegarLoopForPetriNet]: 139 programPoint places, 6 predicate places. [2021-12-21 15:10:27,035 INFO L470 AbstractCegarLoop]: Abstraction has has 145 places, 132 transitions, 444 flow [2021-12-21 15:10:27,036 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 96.16666666666667) internal successors, (577), 6 states have internal predecessors, (577), 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) [2021-12-21 15:10:27,036 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-21 15:10:27,036 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] [2021-12-21 15:10:27,036 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2021-12-21 15:10:27,036 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION] === [2021-12-21 15:10:27,036 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 15:10:27,036 INFO L85 PathProgramCache]: Analyzing trace with hash -1959051616, now seen corresponding path program 1 times [2021-12-21 15:10:27,037 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 15:10:27,037 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1446904287] [2021-12-21 15:10:27,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 15:10:27,037 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 15:10:27,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:10:27,090 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-12-21 15:10:27,090 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 15:10:27,090 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1446904287] [2021-12-21 15:10:27,090 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1446904287] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-21 15:10:27,091 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [186265455] [2021-12-21 15:10:27,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 15:10:27,091 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 15:10:27,091 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 15:10:27,095 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-21 15:10:27,097 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-12-21 15:10:27,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:10:27,193 INFO L263 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 9 conjunts are in the unsatisfiable core [2021-12-21 15:10:27,194 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 15:10:27,411 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-12-21 15:10:27,411 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-21 15:10:27,541 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-12-21 15:10:27,541 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [186265455] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-21 15:10:27,542 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-21 15:10:27,542 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 20 [2021-12-21 15:10:27,542 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [258999751] [2021-12-21 15:10:27,542 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-21 15:10:27,542 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-12-21 15:10:27,542 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 15:10:27,542 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-12-21 15:10:27,543 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=104, Invalid=276, Unknown=0, NotChecked=0, Total=380 [2021-12-21 15:10:27,544 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 93 out of 144 [2021-12-21 15:10:27,545 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 145 places, 132 transitions, 444 flow. Second operand has 20 states, 20 states have (on average 95.6) internal successors, (1912), 20 states have internal predecessors, (1912), 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) [2021-12-21 15:10:27,545 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-21 15:10:27,545 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 93 of 144 [2021-12-21 15:10:27,545 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-21 15:10:29,868 INFO L129 PetriNetUnfolder]: 2337/17454 cut-off events. [2021-12-21 15:10:29,868 INFO L130 PetriNetUnfolder]: For 5052/5052 co-relation queries the response was YES. [2021-12-21 15:10:29,916 INFO L84 FinitePrefix]: Finished finitePrefix Result has 33707 conditions, 17454 events. 2337/17454 cut-off events. For 5052/5052 co-relation queries the response was YES. Maximal size of possible extension queue 363. Compared 210625 event pairs, 826 based on Foata normal form. 2/17456 useless extension candidates. Maximal degree in co-relation 16679. Up to 5383 conditions per place. [2021-12-21 15:10:29,952 INFO L132 encePairwiseOnDemand]: 129/144 looper letters, 52 selfloop transitions, 20 changer transitions 0/157 dead transitions. [2021-12-21 15:10:29,952 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 155 places, 157 transitions, 667 flow [2021-12-21 15:10:29,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-12-21 15:10:29,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2021-12-21 15:10:29,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1190 transitions. [2021-12-21 15:10:29,954 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.6886574074074074 [2021-12-21 15:10:29,954 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 1190 transitions. [2021-12-21 15:10:29,954 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 1190 transitions. [2021-12-21 15:10:29,954 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-21 15:10:29,954 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 1190 transitions. [2021-12-21 15:10:29,955 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 99.16666666666667) internal successors, (1190), 12 states have internal predecessors, (1190), 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) [2021-12-21 15:10:29,957 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 144.0) internal successors, (1872), 13 states have internal predecessors, (1872), 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) [2021-12-21 15:10:29,957 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 144.0) internal successors, (1872), 13 states have internal predecessors, (1872), 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) [2021-12-21 15:10:29,957 INFO L186 Difference]: Start difference. First operand has 145 places, 132 transitions, 444 flow. Second operand 12 states and 1190 transitions. [2021-12-21 15:10:29,957 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 155 places, 157 transitions, 667 flow [2021-12-21 15:10:29,966 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 151 places, 157 transitions, 655 flow, removed 0 selfloop flow, removed 4 redundant places. [2021-12-21 15:10:29,967 INFO L242 Difference]: Finished difference. Result has 154 places, 140 transitions, 525 flow [2021-12-21 15:10:29,967 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=144, PETRI_DIFFERENCE_MINUEND_FLOW=432, PETRI_DIFFERENCE_MINUEND_PLACES=140, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=132, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=115, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=525, PETRI_PLACES=154, PETRI_TRANSITIONS=140} [2021-12-21 15:10:29,968 INFO L334 CegarLoopForPetriNet]: 139 programPoint places, 15 predicate places. [2021-12-21 15:10:29,968 INFO L470 AbstractCegarLoop]: Abstraction has has 154 places, 140 transitions, 525 flow [2021-12-21 15:10:29,968 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 95.6) internal successors, (1912), 20 states have internal predecessors, (1912), 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) [2021-12-21 15:10:29,968 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-21 15:10:29,969 INFO L254 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 15:10:29,995 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2021-12-21 15:10:30,187 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 15:10:30,187 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION] === [2021-12-21 15:10:30,187 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 15:10:30,187 INFO L85 PathProgramCache]: Analyzing trace with hash -1360586743, now seen corresponding path program 1 times [2021-12-21 15:10:30,187 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 15:10:30,187 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2075017267] [2021-12-21 15:10:30,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 15:10:30,188 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 15:10:30,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:10:30,265 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 2 proven. 32 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-21 15:10:30,266 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 15:10:30,266 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2075017267] [2021-12-21 15:10:30,266 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2075017267] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-21 15:10:30,266 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1283395282] [2021-12-21 15:10:30,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 15:10:30,266 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 15:10:30,267 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 15:10:30,267 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-21 15:10:30,294 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2021-12-21 15:10:30,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:10:30,374 INFO L263 TraceCheckSpWp]: Trace formula consists of 199 conjuncts, 10 conjunts are in the unsatisfiable core [2021-12-21 15:10:30,378 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 15:10:30,600 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 12 proven. 22 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-21 15:10:30,600 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-21 15:10:30,787 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 12 proven. 22 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-21 15:10:30,788 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1283395282] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-21 15:10:30,788 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-21 15:10:30,788 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 21 [2021-12-21 15:10:30,788 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [86731374] [2021-12-21 15:10:30,788 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-21 15:10:30,790 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2021-12-21 15:10:30,790 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 15:10:30,790 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-12-21 15:10:30,791 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=341, Unknown=0, NotChecked=0, Total=420 [2021-12-21 15:10:30,793 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 96 out of 144 [2021-12-21 15:10:30,794 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 154 places, 140 transitions, 525 flow. Second operand has 21 states, 21 states have (on average 99.57142857142857) internal successors, (2091), 21 states have internal predecessors, (2091), 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) [2021-12-21 15:10:30,794 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-21 15:10:30,794 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 96 of 144 [2021-12-21 15:10:30,794 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-21 15:10:33,536 INFO L129 PetriNetUnfolder]: 2425/17099 cut-off events. [2021-12-21 15:10:33,537 INFO L130 PetriNetUnfolder]: For 11266/11266 co-relation queries the response was YES. [2021-12-21 15:10:33,637 INFO L84 FinitePrefix]: Finished finitePrefix Result has 39718 conditions, 17099 events. 2425/17099 cut-off events. For 11266/11266 co-relation queries the response was YES. Maximal size of possible extension queue 419. Compared 208813 event pairs, 443 based on Foata normal form. 161/17260 useless extension candidates. Maximal degree in co-relation 20303. Up to 5293 conditions per place. [2021-12-21 15:10:33,692 INFO L132 encePairwiseOnDemand]: 129/144 looper letters, 57 selfloop transitions, 29 changer transitions 0/173 dead transitions. [2021-12-21 15:10:33,692 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 176 places, 173 transitions, 835 flow [2021-12-21 15:10:33,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-12-21 15:10:33,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2021-12-21 15:10:33,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 2296 transitions. [2021-12-21 15:10:33,695 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.6932367149758454 [2021-12-21 15:10:33,695 INFO L72 ComplementDD]: Start complementDD. Operand 23 states and 2296 transitions. [2021-12-21 15:10:33,695 INFO L73 IsDeterministic]: Start isDeterministic. Operand 23 states and 2296 transitions. [2021-12-21 15:10:33,696 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-21 15:10:33,696 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 23 states and 2296 transitions. [2021-12-21 15:10:33,698 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 24 states, 23 states have (on average 99.82608695652173) internal successors, (2296), 23 states have internal predecessors, (2296), 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) [2021-12-21 15:10:33,700 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 24 states, 24 states have (on average 144.0) internal successors, (3456), 24 states have internal predecessors, (3456), 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) [2021-12-21 15:10:33,700 INFO L81 ComplementDD]: Finished complementDD. Result has 24 states, 24 states have (on average 144.0) internal successors, (3456), 24 states have internal predecessors, (3456), 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) [2021-12-21 15:10:33,701 INFO L186 Difference]: Start difference. First operand has 154 places, 140 transitions, 525 flow. Second operand 23 states and 2296 transitions. [2021-12-21 15:10:33,701 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 176 places, 173 transitions, 835 flow [2021-12-21 15:10:33,725 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 172 places, 173 transitions, 814 flow, removed 5 selfloop flow, removed 4 redundant places. [2021-12-21 15:10:33,727 INFO L242 Difference]: Finished difference. Result has 173 places, 148 transitions, 605 flow [2021-12-21 15:10:33,727 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=144, PETRI_DIFFERENCE_MINUEND_FLOW=506, PETRI_DIFFERENCE_MINUEND_PLACES=150, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=140, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=116, PETRI_DIFFERENCE_SUBTRAHEND_STATES=23, PETRI_FLOW=605, PETRI_PLACES=173, PETRI_TRANSITIONS=148} [2021-12-21 15:10:33,727 INFO L334 CegarLoopForPetriNet]: 139 programPoint places, 34 predicate places. [2021-12-21 15:10:33,727 INFO L470 AbstractCegarLoop]: Abstraction has has 173 places, 148 transitions, 605 flow [2021-12-21 15:10:33,728 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 99.57142857142857) internal successors, (2091), 21 states have internal predecessors, (2091), 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) [2021-12-21 15:10:33,728 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-21 15:10:33,728 INFO L254 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 15:10:33,746 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2021-12-21 15:10:33,947 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable34 [2021-12-21 15:10:33,947 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION] === [2021-12-21 15:10:33,947 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 15:10:33,947 INFO L85 PathProgramCache]: Analyzing trace with hash -1024113870, now seen corresponding path program 1 times [2021-12-21 15:10:33,947 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 15:10:33,947 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1888410893] [2021-12-21 15:10:33,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 15:10:33,948 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 15:10:33,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:10:34,035 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 2 proven. 32 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2021-12-21 15:10:34,035 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 15:10:34,035 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1888410893] [2021-12-21 15:10:34,036 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1888410893] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-21 15:10:34,036 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2058316059] [2021-12-21 15:10:34,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 15:10:34,036 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 15:10:34,036 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 15:10:34,037 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-21 15:10:34,038 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2021-12-21 15:10:34,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:10:34,155 INFO L263 TraceCheckSpWp]: Trace formula consists of 247 conjuncts, 10 conjunts are in the unsatisfiable core [2021-12-21 15:10:34,157 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 15:10:34,421 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 12 proven. 22 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2021-12-21 15:10:34,422 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-21 15:10:34,626 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 12 proven. 22 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2021-12-21 15:10:34,626 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2058316059] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-21 15:10:34,626 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-21 15:10:34,626 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 21 [2021-12-21 15:10:34,626 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1411868106] [2021-12-21 15:10:34,627 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-21 15:10:34,627 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2021-12-21 15:10:34,627 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 15:10:34,627 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-12-21 15:10:34,628 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=341, Unknown=0, NotChecked=0, Total=420 [2021-12-21 15:10:34,629 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 96 out of 144 [2021-12-21 15:10:34,630 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 173 places, 148 transitions, 605 flow. Second operand has 21 states, 21 states have (on average 100.0) internal successors, (2100), 21 states have internal predecessors, (2100), 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) [2021-12-21 15:10:34,630 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-21 15:10:34,630 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 96 of 144 [2021-12-21 15:10:34,630 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-21 15:10:38,111 INFO L129 PetriNetUnfolder]: 2425/21293 cut-off events. [2021-12-21 15:10:38,111 INFO L130 PetriNetUnfolder]: For 24512/24512 co-relation queries the response was YES. [2021-12-21 15:10:38,185 INFO L84 FinitePrefix]: Finished finitePrefix Result has 57818 conditions, 21293 events. 2425/21293 cut-off events. For 24512/24512 co-relation queries the response was YES. Maximal size of possible extension queue 367. Compared 275349 event pairs, 909 based on Foata normal form. 932/22225 useless extension candidates. Maximal degree in co-relation 29788. Up to 6547 conditions per place. [2021-12-21 15:10:38,235 INFO L132 encePairwiseOnDemand]: 129/144 looper letters, 49 selfloop transitions, 31 changer transitions 0/169 dead transitions. [2021-12-21 15:10:38,236 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 195 places, 169 transitions, 855 flow [2021-12-21 15:10:38,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-12-21 15:10:38,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2021-12-21 15:10:38,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 2287 transitions. [2021-12-21 15:10:38,238 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.6905193236714976 [2021-12-21 15:10:38,238 INFO L72 ComplementDD]: Start complementDD. Operand 23 states and 2287 transitions. [2021-12-21 15:10:38,238 INFO L73 IsDeterministic]: Start isDeterministic. Operand 23 states and 2287 transitions. [2021-12-21 15:10:38,238 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-21 15:10:38,238 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 23 states and 2287 transitions. [2021-12-21 15:10:38,241 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 24 states, 23 states have (on average 99.43478260869566) internal successors, (2287), 23 states have internal predecessors, (2287), 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) [2021-12-21 15:10:38,243 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 24 states, 24 states have (on average 144.0) internal successors, (3456), 24 states have internal predecessors, (3456), 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) [2021-12-21 15:10:38,243 INFO L81 ComplementDD]: Finished complementDD. Result has 24 states, 24 states have (on average 144.0) internal successors, (3456), 24 states have internal predecessors, (3456), 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) [2021-12-21 15:10:38,243 INFO L186 Difference]: Start difference. First operand has 173 places, 148 transitions, 605 flow. Second operand 23 states and 2287 transitions. [2021-12-21 15:10:38,243 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 195 places, 169 transitions, 855 flow [2021-12-21 15:10:38,289 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 186 places, 169 transitions, 812 flow, removed 7 selfloop flow, removed 9 redundant places. [2021-12-21 15:10:38,291 INFO L242 Difference]: Finished difference. Result has 187 places, 154 transitions, 665 flow [2021-12-21 15:10:38,291 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=144, PETRI_DIFFERENCE_MINUEND_FLOW=562, PETRI_DIFFERENCE_MINUEND_PLACES=164, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=148, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=120, PETRI_DIFFERENCE_SUBTRAHEND_STATES=23, PETRI_FLOW=665, PETRI_PLACES=187, PETRI_TRANSITIONS=154} [2021-12-21 15:10:38,291 INFO L334 CegarLoopForPetriNet]: 139 programPoint places, 48 predicate places. [2021-12-21 15:10:38,291 INFO L470 AbstractCegarLoop]: Abstraction has has 187 places, 154 transitions, 665 flow [2021-12-21 15:10:38,292 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 100.0) internal successors, (2100), 21 states have internal predecessors, (2100), 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) [2021-12-21 15:10:38,292 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-21 15:10:38,292 INFO L254 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 10, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 15:10:38,320 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2021-12-21 15:10:38,518 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable35 [2021-12-21 15:10:38,519 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0INUSE_VIOLATION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION] === [2021-12-21 15:10:38,519 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 15:10:38,519 INFO L85 PathProgramCache]: Analyzing trace with hash 436831306, now seen corresponding path program 1 times [2021-12-21 15:10:38,519 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 15:10:38,519 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2062607537] [2021-12-21 15:10:38,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 15:10:38,520 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 15:10:38,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-21 15:10:38,537 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-21 15:10:38,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-21 15:10:38,553 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-21 15:10:38,554 INFO L628 BasicCegarLoop]: Counterexample is feasible [2021-12-21 15:10:38,554 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATION (1 of 2 remaining) [2021-12-21 15:10:38,554 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2021-12-21 15:10:38,554 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2021-12-21 15:10:38,555 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1] [2021-12-21 15:10:38,555 WARN L234 ceAbstractionStarter]: 9 thread instances were not sufficient, I will increase this number and restart the analysis [2021-12-21 15:10:38,555 INFO L513 ceAbstractionStarter]: Constructing petrified ICFG for 10 thread instances. [2021-12-21 15:10:38,566 WARN L322 ript$VariableManager]: TermVariabe |thrThread4of10ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:38,566 WARN L322 ript$VariableManager]: TermVariabe |thrThread4of10ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:38,566 WARN L322 ript$VariableManager]: TermVariabe thrThread4of10ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:38,566 WARN L322 ript$VariableManager]: TermVariabe thrThread4of10ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:38,566 WARN L322 ript$VariableManager]: TermVariabe |thrThread4of10ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:38,566 WARN L322 ript$VariableManager]: TermVariabe |thrThread4of10ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:38,566 WARN L322 ript$VariableManager]: TermVariabe thrThread4of10ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:38,566 WARN L322 ript$VariableManager]: TermVariabe thrThread4of10ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:38,566 WARN L322 ript$VariableManager]: TermVariabe thrThread4of10ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:38,567 WARN L322 ript$VariableManager]: TermVariabe thrThread4of10ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:38,567 WARN L322 ript$VariableManager]: TermVariabe thrThread4of10ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:38,567 WARN L322 ript$VariableManager]: TermVariabe thrThread4of10ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:38,567 WARN L322 ript$VariableManager]: TermVariabe thrThread4of10ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:38,567 WARN L322 ript$VariableManager]: TermVariabe thrThread4of10ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:38,567 WARN L322 ript$VariableManager]: TermVariabe |thrThread6of10ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:38,567 WARN L322 ript$VariableManager]: TermVariabe |thrThread6of10ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:38,567 WARN L322 ript$VariableManager]: TermVariabe thrThread6of10ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:38,568 WARN L322 ript$VariableManager]: TermVariabe thrThread6of10ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:38,568 WARN L322 ript$VariableManager]: TermVariabe |thrThread6of10ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:38,568 WARN L322 ript$VariableManager]: TermVariabe |thrThread6of10ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:38,568 WARN L322 ript$VariableManager]: TermVariabe thrThread6of10ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:38,568 WARN L322 ript$VariableManager]: TermVariabe thrThread6of10ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:38,568 WARN L322 ript$VariableManager]: TermVariabe thrThread6of10ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:38,568 WARN L322 ript$VariableManager]: TermVariabe thrThread6of10ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:38,568 WARN L322 ript$VariableManager]: TermVariabe thrThread6of10ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:38,568 WARN L322 ript$VariableManager]: TermVariabe thrThread6of10ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:38,569 WARN L322 ript$VariableManager]: TermVariabe thrThread6of10ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:38,569 WARN L322 ript$VariableManager]: TermVariabe thrThread6of10ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:38,569 WARN L322 ript$VariableManager]: TermVariabe |thrThread3of10ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:38,569 WARN L322 ript$VariableManager]: TermVariabe |thrThread3of10ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:38,569 WARN L322 ript$VariableManager]: TermVariabe thrThread3of10ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:38,569 WARN L322 ript$VariableManager]: TermVariabe thrThread3of10ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:38,569 WARN L322 ript$VariableManager]: TermVariabe |thrThread3of10ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:38,569 WARN L322 ript$VariableManager]: TermVariabe |thrThread3of10ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:38,569 WARN L322 ript$VariableManager]: TermVariabe thrThread3of10ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:38,569 WARN L322 ript$VariableManager]: TermVariabe thrThread3of10ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:38,570 WARN L322 ript$VariableManager]: TermVariabe thrThread3of10ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:38,570 WARN L322 ript$VariableManager]: TermVariabe thrThread3of10ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:38,570 WARN L322 ript$VariableManager]: TermVariabe thrThread3of10ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:38,570 WARN L322 ript$VariableManager]: TermVariabe thrThread3of10ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:38,570 WARN L322 ript$VariableManager]: TermVariabe thrThread3of10ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:38,570 WARN L322 ript$VariableManager]: TermVariabe thrThread3of10ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:38,570 WARN L322 ript$VariableManager]: TermVariabe |thrThread7of10ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:38,570 WARN L322 ript$VariableManager]: TermVariabe |thrThread7of10ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:38,571 WARN L322 ript$VariableManager]: TermVariabe thrThread7of10ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:38,571 WARN L322 ript$VariableManager]: TermVariabe thrThread7of10ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:38,571 WARN L322 ript$VariableManager]: TermVariabe |thrThread7of10ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:38,571 WARN L322 ript$VariableManager]: TermVariabe |thrThread7of10ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:38,571 WARN L322 ript$VariableManager]: TermVariabe thrThread7of10ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:38,571 WARN L322 ript$VariableManager]: TermVariabe thrThread7of10ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:38,571 WARN L322 ript$VariableManager]: TermVariabe thrThread7of10ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:38,571 WARN L322 ript$VariableManager]: TermVariabe thrThread7of10ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:38,571 WARN L322 ript$VariableManager]: TermVariabe thrThread7of10ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:38,572 WARN L322 ript$VariableManager]: TermVariabe thrThread7of10ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:38,572 WARN L322 ript$VariableManager]: TermVariabe thrThread7of10ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:38,572 WARN L322 ript$VariableManager]: TermVariabe thrThread7of10ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:38,572 WARN L322 ript$VariableManager]: TermVariabe |thrThread2of10ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:38,572 WARN L322 ript$VariableManager]: TermVariabe |thrThread2of10ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:38,572 WARN L322 ript$VariableManager]: TermVariabe thrThread2of10ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:38,572 WARN L322 ript$VariableManager]: TermVariabe thrThread2of10ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:38,572 WARN L322 ript$VariableManager]: TermVariabe |thrThread2of10ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:38,572 WARN L322 ript$VariableManager]: TermVariabe |thrThread2of10ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:38,573 WARN L322 ript$VariableManager]: TermVariabe thrThread2of10ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:38,573 WARN L322 ript$VariableManager]: TermVariabe thrThread2of10ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:38,573 WARN L322 ript$VariableManager]: TermVariabe thrThread2of10ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:38,573 WARN L322 ript$VariableManager]: TermVariabe thrThread2of10ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:38,573 WARN L322 ript$VariableManager]: TermVariabe thrThread2of10ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:38,573 WARN L322 ript$VariableManager]: TermVariabe thrThread2of10ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:38,573 WARN L322 ript$VariableManager]: TermVariabe thrThread2of10ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:38,573 WARN L322 ript$VariableManager]: TermVariabe thrThread2of10ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:38,574 WARN L322 ript$VariableManager]: TermVariabe |thrThread8of10ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:38,574 WARN L322 ript$VariableManager]: TermVariabe |thrThread8of10ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:38,574 WARN L322 ript$VariableManager]: TermVariabe thrThread8of10ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:38,574 WARN L322 ript$VariableManager]: TermVariabe thrThread8of10ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:38,574 WARN L322 ript$VariableManager]: TermVariabe |thrThread8of10ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:38,574 WARN L322 ript$VariableManager]: TermVariabe |thrThread8of10ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:38,574 WARN L322 ript$VariableManager]: TermVariabe thrThread8of10ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:38,574 WARN L322 ript$VariableManager]: TermVariabe thrThread8of10ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:38,574 WARN L322 ript$VariableManager]: TermVariabe thrThread8of10ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:38,574 WARN L322 ript$VariableManager]: TermVariabe thrThread8of10ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:38,575 WARN L322 ript$VariableManager]: TermVariabe thrThread8of10ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:38,575 WARN L322 ript$VariableManager]: TermVariabe thrThread8of10ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:38,575 WARN L322 ript$VariableManager]: TermVariabe thrThread8of10ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:38,575 WARN L322 ript$VariableManager]: TermVariabe thrThread8of10ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:38,575 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of10ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:38,575 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of10ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:38,575 WARN L322 ript$VariableManager]: TermVariabe thrThread1of10ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:38,575 WARN L322 ript$VariableManager]: TermVariabe thrThread1of10ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:38,575 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of10ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:38,576 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of10ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:38,576 WARN L322 ript$VariableManager]: TermVariabe thrThread1of10ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:38,576 WARN L322 ript$VariableManager]: TermVariabe thrThread1of10ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:38,576 WARN L322 ript$VariableManager]: TermVariabe thrThread1of10ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:38,576 WARN L322 ript$VariableManager]: TermVariabe thrThread1of10ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:38,576 WARN L322 ript$VariableManager]: TermVariabe thrThread1of10ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:38,576 WARN L322 ript$VariableManager]: TermVariabe thrThread1of10ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:38,576 WARN L322 ript$VariableManager]: TermVariabe thrThread1of10ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:38,576 WARN L322 ript$VariableManager]: TermVariabe thrThread1of10ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:38,577 WARN L322 ript$VariableManager]: TermVariabe |thrThread5of10ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:38,577 WARN L322 ript$VariableManager]: TermVariabe |thrThread5of10ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:38,577 WARN L322 ript$VariableManager]: TermVariabe thrThread5of10ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:38,577 WARN L322 ript$VariableManager]: TermVariabe thrThread5of10ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:38,577 WARN L322 ript$VariableManager]: TermVariabe |thrThread5of10ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:38,577 WARN L322 ript$VariableManager]: TermVariabe |thrThread5of10ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:38,577 WARN L322 ript$VariableManager]: TermVariabe thrThread5of10ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:38,577 WARN L322 ript$VariableManager]: TermVariabe thrThread5of10ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:38,577 WARN L322 ript$VariableManager]: TermVariabe thrThread5of10ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:38,578 WARN L322 ript$VariableManager]: TermVariabe thrThread5of10ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:38,578 WARN L322 ript$VariableManager]: TermVariabe thrThread5of10ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:38,578 WARN L322 ript$VariableManager]: TermVariabe thrThread5of10ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:38,578 WARN L322 ript$VariableManager]: TermVariabe thrThread5of10ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:38,578 WARN L322 ript$VariableManager]: TermVariabe thrThread5of10ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:38,578 WARN L322 ript$VariableManager]: TermVariabe |thrThread9of10ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:38,578 WARN L322 ript$VariableManager]: TermVariabe |thrThread9of10ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:38,578 WARN L322 ript$VariableManager]: TermVariabe thrThread9of10ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:38,578 WARN L322 ript$VariableManager]: TermVariabe thrThread9of10ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:38,579 WARN L322 ript$VariableManager]: TermVariabe |thrThread9of10ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:38,579 WARN L322 ript$VariableManager]: TermVariabe |thrThread9of10ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:38,579 WARN L322 ript$VariableManager]: TermVariabe thrThread9of10ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:38,579 WARN L322 ript$VariableManager]: TermVariabe thrThread9of10ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:38,579 WARN L322 ript$VariableManager]: TermVariabe thrThread9of10ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:38,579 WARN L322 ript$VariableManager]: TermVariabe thrThread9of10ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:38,579 WARN L322 ript$VariableManager]: TermVariabe thrThread9of10ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:38,579 WARN L322 ript$VariableManager]: TermVariabe thrThread9of10ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:38,579 WARN L322 ript$VariableManager]: TermVariabe thrThread9of10ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:38,580 WARN L322 ript$VariableManager]: TermVariabe thrThread9of10ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:38,580 WARN L322 ript$VariableManager]: TermVariabe |thrThread10of10ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:38,580 WARN L322 ript$VariableManager]: TermVariabe |thrThread10of10ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:38,580 WARN L322 ript$VariableManager]: TermVariabe thrThread10of10ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:38,580 WARN L322 ript$VariableManager]: TermVariabe thrThread10of10ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:38,580 WARN L322 ript$VariableManager]: TermVariabe |thrThread10of10ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:38,580 WARN L322 ript$VariableManager]: TermVariabe |thrThread10of10ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:38,580 WARN L322 ript$VariableManager]: TermVariabe thrThread10of10ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:38,580 WARN L322 ript$VariableManager]: TermVariabe thrThread10of10ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:38,581 WARN L322 ript$VariableManager]: TermVariabe thrThread10of10ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:38,581 WARN L322 ript$VariableManager]: TermVariabe thrThread10of10ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:38,581 WARN L322 ript$VariableManager]: TermVariabe thrThread10of10ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:38,581 WARN L322 ript$VariableManager]: TermVariabe thrThread10of10ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:38,581 WARN L322 ript$VariableManager]: TermVariabe thrThread10of10ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:38,581 WARN L322 ript$VariableManager]: TermVariabe thrThread10of10ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:38,581 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of10ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:38,582 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of10ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:38,582 WARN L322 ript$VariableManager]: TermVariabe thrThread1of10ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:38,582 WARN L322 ript$VariableManager]: TermVariabe thrThread1of10ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:38,582 WARN L322 ript$VariableManager]: TermVariabe thrThread1of10ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:38,582 WARN L322 ript$VariableManager]: TermVariabe |thrThread2of10ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:38,582 WARN L322 ript$VariableManager]: TermVariabe thrThread2of10ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:38,582 WARN L322 ript$VariableManager]: TermVariabe thrThread2of10ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:38,583 WARN L322 ript$VariableManager]: TermVariabe |thrThread2of10ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:38,583 WARN L322 ript$VariableManager]: TermVariabe thrThread2of10ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:38,583 WARN L322 ript$VariableManager]: TermVariabe thrThread3of10ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:38,583 WARN L322 ript$VariableManager]: TermVariabe |thrThread3of10ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:38,583 WARN L322 ript$VariableManager]: TermVariabe thrThread3of10ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:38,583 WARN L322 ript$VariableManager]: TermVariabe |thrThread3of10ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:38,583 WARN L322 ript$VariableManager]: TermVariabe thrThread3of10ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:38,584 WARN L322 ript$VariableManager]: TermVariabe |thrThread4of10ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:38,584 WARN L322 ript$VariableManager]: TermVariabe |thrThread4of10ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:38,584 WARN L322 ript$VariableManager]: TermVariabe thrThread4of10ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:38,584 WARN L322 ript$VariableManager]: TermVariabe thrThread4of10ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:38,584 WARN L322 ript$VariableManager]: TermVariabe thrThread4of10ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:38,584 WARN L322 ript$VariableManager]: TermVariabe thrThread5of10ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:38,584 WARN L322 ript$VariableManager]: TermVariabe |thrThread5of10ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:38,584 WARN L322 ript$VariableManager]: TermVariabe |thrThread5of10ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:38,585 WARN L322 ript$VariableManager]: TermVariabe thrThread5of10ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:38,585 WARN L322 ript$VariableManager]: TermVariabe thrThread5of10ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:38,585 WARN L322 ript$VariableManager]: TermVariabe thrThread6of10ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:38,585 WARN L322 ript$VariableManager]: TermVariabe |thrThread6of10ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:38,585 WARN L322 ript$VariableManager]: TermVariabe thrThread6of10ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:38,585 WARN L322 ript$VariableManager]: TermVariabe |thrThread6of10ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:38,585 WARN L322 ript$VariableManager]: TermVariabe thrThread6of10ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:38,586 WARN L322 ript$VariableManager]: TermVariabe thrThread7of10ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:38,586 WARN L322 ript$VariableManager]: TermVariabe |thrThread7of10ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:38,586 WARN L322 ript$VariableManager]: TermVariabe thrThread7of10ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:38,586 WARN L322 ript$VariableManager]: TermVariabe |thrThread7of10ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:38,586 WARN L322 ript$VariableManager]: TermVariabe thrThread7of10ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:38,587 WARN L322 ript$VariableManager]: TermVariabe |thrThread8of10ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:38,587 WARN L322 ript$VariableManager]: TermVariabe thrThread8of10ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:38,587 WARN L322 ript$VariableManager]: TermVariabe thrThread8of10ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:38,587 WARN L322 ript$VariableManager]: TermVariabe |thrThread8of10ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:38,587 WARN L322 ript$VariableManager]: TermVariabe thrThread8of10ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:38,587 WARN L322 ript$VariableManager]: TermVariabe |thrThread9of10ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:38,587 WARN L322 ript$VariableManager]: TermVariabe |thrThread9of10ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:38,587 WARN L322 ript$VariableManager]: TermVariabe thrThread9of10ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:38,588 WARN L322 ript$VariableManager]: TermVariabe thrThread9of10ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:38,588 WARN L322 ript$VariableManager]: TermVariabe thrThread9of10ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:38,588 WARN L322 ript$VariableManager]: TermVariabe thrThread10of10ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:38,588 WARN L322 ript$VariableManager]: TermVariabe |thrThread10of10ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:38,588 WARN L322 ript$VariableManager]: TermVariabe thrThread10of10ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:38,588 WARN L322 ript$VariableManager]: TermVariabe |thrThread10of10ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:38,588 WARN L322 ript$VariableManager]: TermVariabe thrThread10of10ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:10:38,590 INFO L148 ThreadInstanceAdder]: Constructed 10 joinOtherThreadTransitions. [2021-12-21 15:10:38,590 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-21 15:10:38,591 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=true, 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 [2021-12-21 15:10:38,591 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-12-21 15:10:38,592 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 156 places, 151 transitions, 472 flow [2021-12-21 15:10:42,814 INFO L129 PetriNetUnfolder]: 8215/41177 cut-off events. [2021-12-21 15:10:42,814 INFO L130 PetriNetUnfolder]: For 5330/5330 co-relation queries the response was YES. [2021-12-21 15:10:43,059 INFO L84 FinitePrefix]: Finished finitePrefix Result has 46383 conditions, 41177 events. 8215/41177 cut-off events. For 5330/5330 co-relation queries the response was YES. Maximal size of possible extension queue 715. Compared 535162 event pairs, 3084 based on Foata normal form. 0/35010 useless extension candidates. Maximal degree in co-relation 22780. Up to 5120 conditions per place. [2021-12-21 15:10:43,060 INFO L82 GeneralOperation]: Start removeDead. Operand has 156 places, 151 transitions, 472 flow [2021-12-21 15:10:43,137 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 147 places, 141 transitions, 452 flow [2021-12-21 15:10:43,140 INFO L129 PetriNetUnfolder]: 6/74 cut-off events. [2021-12-21 15:10:43,140 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-12-21 15:10:43,140 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-21 15:10:43,140 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] [2021-12-21 15:10:43,140 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION] === [2021-12-21 15:10:43,140 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 15:10:43,140 INFO L85 PathProgramCache]: Analyzing trace with hash 1949500845, now seen corresponding path program 1 times [2021-12-21 15:10:43,141 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 15:10:43,141 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1596796796] [2021-12-21 15:10:43,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 15:10:43,141 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 15:10:43,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:10:43,156 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 15:10:43,156 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 15:10:43,156 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1596796796] [2021-12-21 15:10:43,156 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1596796796] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 15:10:43,156 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 15:10:43,157 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-21 15:10:43,157 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [630700027] [2021-12-21 15:10:43,157 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 15:10:43,157 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-12-21 15:10:43,157 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 15:10:43,157 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-12-21 15:10:43,157 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-12-21 15:10:43,158 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 125 out of 151 [2021-12-21 15:10:43,158 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 147 places, 141 transitions, 452 flow. Second operand has 2 states, 2 states have (on average 125.5) internal successors, (251), 2 states have internal predecessors, (251), 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) [2021-12-21 15:10:43,158 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-21 15:10:43,158 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 125 of 151 [2021-12-21 15:10:43,159 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-21 15:10:46,362 INFO L129 PetriNetUnfolder]: 5131/28877 cut-off events. [2021-12-21 15:10:46,363 INFO L130 PetriNetUnfolder]: For 15625/15625 co-relation queries the response was YES. [2021-12-21 15:10:46,456 INFO L84 FinitePrefix]: Finished finitePrefix Result has 39214 conditions, 28877 events. 5131/28877 cut-off events. For 15625/15625 co-relation queries the response was YES. Maximal size of possible extension queue 541. Compared 363627 event pairs, 3084 based on Foata normal form. 2060/28877 useless extension candidates. Maximal degree in co-relation 18938. Up to 5131 conditions per place. [2021-12-21 15:10:46,524 INFO L132 encePairwiseOnDemand]: 147/151 looper letters, 20 selfloop transitions, 0 changer transitions 1/137 dead transitions. [2021-12-21 15:10:46,524 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 148 places, 137 transitions, 484 flow [2021-12-21 15:10:46,525 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-12-21 15:10:46,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2021-12-21 15:10:46,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 274 transitions. [2021-12-21 15:10:46,525 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.9072847682119205 [2021-12-21 15:10:46,525 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 274 transitions. [2021-12-21 15:10:46,525 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 274 transitions. [2021-12-21 15:10:46,526 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-21 15:10:46,526 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 274 transitions. [2021-12-21 15:10:46,526 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 137.0) internal successors, (274), 2 states have internal predecessors, (274), 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) [2021-12-21 15:10:46,526 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 151.0) internal successors, (453), 3 states have internal predecessors, (453), 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) [2021-12-21 15:10:46,527 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 151.0) internal successors, (453), 3 states have internal predecessors, (453), 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) [2021-12-21 15:10:46,527 INFO L186 Difference]: Start difference. First operand has 147 places, 141 transitions, 452 flow. Second operand 2 states and 274 transitions. [2021-12-21 15:10:46,527 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 148 places, 137 transitions, 484 flow [2021-12-21 15:10:46,530 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 148 places, 137 transitions, 484 flow, removed 0 selfloop flow, removed 0 redundant places. [2021-12-21 15:10:46,531 INFO L242 Difference]: Finished difference. Result has 148 places, 136 transitions, 442 flow [2021-12-21 15:10:46,531 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=151, PETRI_DIFFERENCE_MINUEND_FLOW=444, PETRI_DIFFERENCE_MINUEND_PLACES=147, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=137, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=137, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=442, PETRI_PLACES=148, PETRI_TRANSITIONS=136} [2021-12-21 15:10:46,532 INFO L334 CegarLoopForPetriNet]: 147 programPoint places, 1 predicate places. [2021-12-21 15:10:46,532 INFO L470 AbstractCegarLoop]: Abstraction has has 148 places, 136 transitions, 442 flow [2021-12-21 15:10:46,532 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 125.5) internal successors, (251), 2 states have internal predecessors, (251), 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) [2021-12-21 15:10:46,532 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-21 15:10:46,533 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] [2021-12-21 15:10:46,533 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2021-12-21 15:10:46,533 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION] === [2021-12-21 15:10:46,533 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 15:10:46,533 INFO L85 PathProgramCache]: Analyzing trace with hash 2078583564, now seen corresponding path program 1 times [2021-12-21 15:10:46,533 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 15:10:46,533 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [320188171] [2021-12-21 15:10:46,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 15:10:46,534 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 15:10:46,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:10:46,570 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 15:10:46,570 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 15:10:46,570 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [320188171] [2021-12-21 15:10:46,571 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [320188171] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 15:10:46,571 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 15:10:46,571 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-21 15:10:46,571 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [450619985] [2021-12-21 15:10:46,571 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 15:10:46,571 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-21 15:10:46,571 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 15:10:46,572 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-21 15:10:46,572 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2021-12-21 15:10:46,572 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 99 out of 151 [2021-12-21 15:10:46,573 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 148 places, 136 transitions, 442 flow. Second operand has 6 states, 6 states have (on average 101.16666666666667) internal successors, (607), 6 states have internal predecessors, (607), 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) [2021-12-21 15:10:46,573 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-21 15:10:46,573 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 99 of 151 [2021-12-21 15:10:46,573 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-21 15:10:51,293 INFO L129 PetriNetUnfolder]: 5165/35193 cut-off events. [2021-12-21 15:10:51,293 INFO L130 PetriNetUnfolder]: For 5375/5375 co-relation queries the response was YES. [2021-12-21 15:10:51,563 INFO L84 FinitePrefix]: Finished finitePrefix Result has 61146 conditions, 35193 events. 5165/35193 cut-off events. For 5375/5375 co-relation queries the response was YES. Maximal size of possible extension queue 722. Compared 474996 event pairs, 2116 based on Foata normal form. 0/33137 useless extension candidates. Maximal degree in co-relation 61133. Up to 16457 conditions per place. [2021-12-21 15:10:51,654 INFO L132 encePairwiseOnDemand]: 139/151 looper letters, 58 selfloop transitions, 9 changer transitions 0/158 dead transitions. [2021-12-21 15:10:51,654 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 152 places, 158 transitions, 650 flow [2021-12-21 15:10:51,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-21 15:10:51,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2021-12-21 15:10:51,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 664 transitions. [2021-12-21 15:10:51,655 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7328918322295805 [2021-12-21 15:10:51,655 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 664 transitions. [2021-12-21 15:10:51,656 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 664 transitions. [2021-12-21 15:10:51,656 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-21 15:10:51,656 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 664 transitions. [2021-12-21 15:10:51,657 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 110.66666666666667) internal successors, (664), 6 states have internal predecessors, (664), 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) [2021-12-21 15:10:51,657 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 151.0) internal successors, (1057), 7 states have internal predecessors, (1057), 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) [2021-12-21 15:10:51,657 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 151.0) internal successors, (1057), 7 states have internal predecessors, (1057), 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) [2021-12-21 15:10:51,658 INFO L186 Difference]: Start difference. First operand has 148 places, 136 transitions, 442 flow. Second operand 6 states and 664 transitions. [2021-12-21 15:10:51,658 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 152 places, 158 transitions, 650 flow [2021-12-21 15:10:51,665 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 152 places, 158 transitions, 650 flow, removed 0 selfloop flow, removed 0 redundant places. [2021-12-21 15:10:51,666 INFO L242 Difference]: Finished difference. Result has 153 places, 139 transitions, 484 flow [2021-12-21 15:10:51,666 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=151, PETRI_DIFFERENCE_MINUEND_FLOW=442, PETRI_DIFFERENCE_MINUEND_PLACES=147, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=136, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=127, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=484, PETRI_PLACES=153, PETRI_TRANSITIONS=139} [2021-12-21 15:10:51,667 INFO L334 CegarLoopForPetriNet]: 147 programPoint places, 6 predicate places. [2021-12-21 15:10:51,667 INFO L470 AbstractCegarLoop]: Abstraction has has 153 places, 139 transitions, 484 flow [2021-12-21 15:10:51,667 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 101.16666666666667) internal successors, (607), 6 states have internal predecessors, (607), 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) [2021-12-21 15:10:51,667 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-21 15:10:51,667 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] [2021-12-21 15:10:51,668 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2021-12-21 15:10:51,668 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION] === [2021-12-21 15:10:51,668 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 15:10:51,668 INFO L85 PathProgramCache]: Analyzing trace with hash -1349887398, now seen corresponding path program 1 times [2021-12-21 15:10:51,668 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 15:10:51,668 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [295827809] [2021-12-21 15:10:51,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 15:10:51,669 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 15:10:51,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:10:51,720 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-12-21 15:10:51,720 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 15:10:51,720 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [295827809] [2021-12-21 15:10:51,721 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [295827809] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-21 15:10:51,721 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [981351880] [2021-12-21 15:10:51,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 15:10:51,721 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 15:10:51,721 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 15:10:51,740 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-21 15:10:51,741 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2021-12-21 15:10:51,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:10:51,858 INFO L263 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 9 conjunts are in the unsatisfiable core [2021-12-21 15:10:51,859 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 15:10:52,091 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-12-21 15:10:52,092 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-21 15:10:52,248 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-12-21 15:10:52,248 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [981351880] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-21 15:10:52,248 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-21 15:10:52,249 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 20 [2021-12-21 15:10:52,249 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [693925231] [2021-12-21 15:10:52,249 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-21 15:10:52,249 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-12-21 15:10:52,249 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 15:10:52,250 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-12-21 15:10:52,250 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=104, Invalid=276, Unknown=0, NotChecked=0, Total=380 [2021-12-21 15:10:52,251 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 98 out of 151 [2021-12-21 15:10:52,252 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 153 places, 139 transitions, 484 flow. Second operand has 20 states, 20 states have (on average 100.6) internal successors, (2012), 20 states have internal predecessors, (2012), 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) [2021-12-21 15:10:52,252 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-21 15:10:52,253 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 98 of 151 [2021-12-21 15:10:52,253 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-21 15:10:57,496 INFO L129 PetriNetUnfolder]: 5162/35173 cut-off events. [2021-12-21 15:10:57,496 INFO L130 PetriNetUnfolder]: For 10491/10491 co-relation queries the response was YES. [2021-12-21 15:10:57,760 INFO L84 FinitePrefix]: Finished finitePrefix Result has 68404 conditions, 35173 events. 5162/35173 cut-off events. For 10491/10491 co-relation queries the response was YES. Maximal size of possible extension queue 722. Compared 475219 event pairs, 2117 based on Foata normal form. 2/35175 useless extension candidates. Maximal degree in co-relation 68389. Up to 11273 conditions per place. [2021-12-21 15:10:57,863 INFO L132 encePairwiseOnDemand]: 136/151 looper letters, 55 selfloop transitions, 20 changer transitions 0/165 dead transitions. [2021-12-21 15:10:57,864 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 164 places, 165 transitions, 718 flow [2021-12-21 15:10:57,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-12-21 15:10:57,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2021-12-21 15:10:57,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1253 transitions. [2021-12-21 15:10:57,866 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.6915011037527594 [2021-12-21 15:10:57,866 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 1253 transitions. [2021-12-21 15:10:57,866 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 1253 transitions. [2021-12-21 15:10:57,866 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-21 15:10:57,866 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 1253 transitions. [2021-12-21 15:10:57,868 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 104.41666666666667) internal successors, (1253), 12 states have internal predecessors, (1253), 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) [2021-12-21 15:10:57,869 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 151.0) internal successors, (1963), 13 states have internal predecessors, (1963), 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) [2021-12-21 15:10:57,869 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 151.0) internal successors, (1963), 13 states have internal predecessors, (1963), 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) [2021-12-21 15:10:57,869 INFO L186 Difference]: Start difference. First operand has 153 places, 139 transitions, 484 flow. Second operand 12 states and 1253 transitions. [2021-12-21 15:10:57,869 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 164 places, 165 transitions, 718 flow [2021-12-21 15:10:57,894 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 160 places, 165 transitions, 706 flow, removed 0 selfloop flow, removed 4 redundant places. [2021-12-21 15:10:57,896 INFO L242 Difference]: Finished difference. Result has 163 places, 147 transitions, 565 flow [2021-12-21 15:10:57,896 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=151, PETRI_DIFFERENCE_MINUEND_FLOW=472, PETRI_DIFFERENCE_MINUEND_PLACES=149, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=139, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=122, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=565, PETRI_PLACES=163, PETRI_TRANSITIONS=147} [2021-12-21 15:10:57,896 INFO L334 CegarLoopForPetriNet]: 147 programPoint places, 16 predicate places. [2021-12-21 15:10:57,896 INFO L470 AbstractCegarLoop]: Abstraction has has 163 places, 147 transitions, 565 flow [2021-12-21 15:10:57,897 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 100.6) internal successors, (2012), 20 states have internal predecessors, (2012), 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) [2021-12-21 15:10:57,897 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-21 15:10:57,897 INFO L254 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 15:10:57,923 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2021-12-21 15:10:58,124 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2021-12-21 15:10:58,124 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION] === [2021-12-21 15:10:58,124 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 15:10:58,125 INFO L85 PathProgramCache]: Analyzing trace with hash 2099791053, now seen corresponding path program 1 times [2021-12-21 15:10:58,125 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 15:10:58,125 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [922845602] [2021-12-21 15:10:58,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 15:10:58,125 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 15:10:58,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:10:58,207 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 2 proven. 32 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-21 15:10:58,207 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 15:10:58,207 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [922845602] [2021-12-21 15:10:58,207 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [922845602] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-21 15:10:58,208 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [198504913] [2021-12-21 15:10:58,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 15:10:58,209 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 15:10:58,209 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 15:10:58,210 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-21 15:10:58,211 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2021-12-21 15:10:58,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:10:58,336 INFO L263 TraceCheckSpWp]: Trace formula consists of 199 conjuncts, 10 conjunts are in the unsatisfiable core [2021-12-21 15:10:58,338 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 15:10:58,532 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 12 proven. 22 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-21 15:10:58,532 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-21 15:10:58,721 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 12 proven. 22 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-21 15:10:58,721 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [198504913] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-21 15:10:58,721 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-21 15:10:58,721 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 21 [2021-12-21 15:10:58,722 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [502746514] [2021-12-21 15:10:58,722 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-21 15:10:58,722 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2021-12-21 15:10:58,722 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 15:10:58,723 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-12-21 15:10:58,723 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=341, Unknown=0, NotChecked=0, Total=420 [2021-12-21 15:10:58,724 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 101 out of 151 [2021-12-21 15:10:58,725 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 163 places, 147 transitions, 565 flow. Second operand has 21 states, 21 states have (on average 104.57142857142857) internal successors, (2196), 21 states have internal predecessors, (2196), 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) [2021-12-21 15:10:58,725 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-21 15:10:58,725 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 101 of 151 [2021-12-21 15:10:58,725 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-21 15:11:04,337 INFO L129 PetriNetUnfolder]: 5303/34867 cut-off events. [2021-12-21 15:11:04,338 INFO L130 PetriNetUnfolder]: For 22976/22976 co-relation queries the response was YES. [2021-12-21 15:11:04,589 INFO L84 FinitePrefix]: Finished finitePrefix Result has 80890 conditions, 34867 events. 5303/34867 cut-off events. For 22976/22976 co-relation queries the response was YES. Maximal size of possible extension queue 794. Compared 475079 event pairs, 1268 based on Foata normal form. 216/35083 useless extension candidates. Maximal degree in co-relation 80872. Up to 11201 conditions per place. [2021-12-21 15:11:04,816 INFO L132 encePairwiseOnDemand]: 136/151 looper letters, 61 selfloop transitions, 29 changer transitions 0/182 dead transitions. [2021-12-21 15:11:04,816 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 185 places, 182 transitions, 893 flow [2021-12-21 15:11:04,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-12-21 15:11:04,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2021-12-21 15:11:04,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 2415 transitions. [2021-12-21 15:11:04,819 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.695364238410596 [2021-12-21 15:11:04,819 INFO L72 ComplementDD]: Start complementDD. Operand 23 states and 2415 transitions. [2021-12-21 15:11:04,819 INFO L73 IsDeterministic]: Start isDeterministic. Operand 23 states and 2415 transitions. [2021-12-21 15:11:04,819 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-21 15:11:04,819 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 23 states and 2415 transitions. [2021-12-21 15:11:04,822 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 24 states, 23 states have (on average 105.0) internal successors, (2415), 23 states have internal predecessors, (2415), 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) [2021-12-21 15:11:04,827 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 24 states, 24 states have (on average 151.0) internal successors, (3624), 24 states have internal predecessors, (3624), 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) [2021-12-21 15:11:04,828 INFO L81 ComplementDD]: Finished complementDD. Result has 24 states, 24 states have (on average 151.0) internal successors, (3624), 24 states have internal predecessors, (3624), 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) [2021-12-21 15:11:04,828 INFO L186 Difference]: Start difference. First operand has 163 places, 147 transitions, 565 flow. Second operand 23 states and 2415 transitions. [2021-12-21 15:11:04,828 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 185 places, 182 transitions, 893 flow [2021-12-21 15:11:04,861 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 181 places, 182 transitions, 872 flow, removed 5 selfloop flow, removed 4 redundant places. [2021-12-21 15:11:04,863 INFO L242 Difference]: Finished difference. Result has 182 places, 155 transitions, 645 flow [2021-12-21 15:11:04,864 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=151, PETRI_DIFFERENCE_MINUEND_FLOW=546, PETRI_DIFFERENCE_MINUEND_PLACES=159, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=147, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=123, PETRI_DIFFERENCE_SUBTRAHEND_STATES=23, PETRI_FLOW=645, PETRI_PLACES=182, PETRI_TRANSITIONS=155} [2021-12-21 15:11:04,864 INFO L334 CegarLoopForPetriNet]: 147 programPoint places, 35 predicate places. [2021-12-21 15:11:04,864 INFO L470 AbstractCegarLoop]: Abstraction has has 182 places, 155 transitions, 645 flow [2021-12-21 15:11:04,865 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 104.57142857142857) internal successors, (2196), 21 states have internal predecessors, (2196), 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) [2021-12-21 15:11:04,865 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-21 15:11:04,865 INFO L254 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 15:11:04,882 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2021-12-21 15:11:05,079 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable40 [2021-12-21 15:11:05,079 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION] === [2021-12-21 15:11:05,079 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 15:11:05,080 INFO L85 PathProgramCache]: Analyzing trace with hash -721855566, now seen corresponding path program 1 times [2021-12-21 15:11:05,080 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 15:11:05,080 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [28006013] [2021-12-21 15:11:05,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 15:11:05,080 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 15:11:05,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:11:05,167 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 2 proven. 32 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2021-12-21 15:11:05,167 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 15:11:05,168 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [28006013] [2021-12-21 15:11:05,168 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [28006013] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-21 15:11:05,168 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [34559128] [2021-12-21 15:11:05,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 15:11:05,168 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 15:11:05,168 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 15:11:05,169 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-21 15:11:05,170 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2021-12-21 15:11:05,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:11:05,288 INFO L263 TraceCheckSpWp]: Trace formula consists of 247 conjuncts, 10 conjunts are in the unsatisfiable core [2021-12-21 15:11:05,289 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 15:11:05,512 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 12 proven. 22 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2021-12-21 15:11:05,512 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-21 15:11:05,697 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 12 proven. 22 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2021-12-21 15:11:05,697 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [34559128] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-21 15:11:05,698 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-21 15:11:05,698 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 21 [2021-12-21 15:11:05,698 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [764521465] [2021-12-21 15:11:05,698 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-21 15:11:05,698 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2021-12-21 15:11:05,698 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 15:11:05,698 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-12-21 15:11:05,699 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=341, Unknown=0, NotChecked=0, Total=420 [2021-12-21 15:11:05,700 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 101 out of 151 [2021-12-21 15:11:05,701 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 182 places, 155 transitions, 645 flow. Second operand has 21 states, 21 states have (on average 105.0) internal successors, (2205), 21 states have internal predecessors, (2205), 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) [2021-12-21 15:11:05,701 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-21 15:11:05,701 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 101 of 151 [2021-12-21 15:11:05,701 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand