./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/pthread/fib_safe-5.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6c24879c 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/fib_safe-5.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 40fcfd4444bd180f6e5508f0972ed92e70894b01f23e03dc2e761819c6d5a859 --- Real Ultimate output --- This is Ultimate 0.2.2-?-6c24879 [2022-07-12 09:52:33,083 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-12 09:52:33,085 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-12 09:52:33,106 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-12 09:52:33,107 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-12 09:52:33,107 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-12 09:52:33,111 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-12 09:52:33,114 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-12 09:52:33,115 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-12 09:52:33,117 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-12 09:52:33,117 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-12 09:52:33,118 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-12 09:52:33,119 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-12 09:52:33,121 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-12 09:52:33,122 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-12 09:52:33,123 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-12 09:52:33,125 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-12 09:52:33,128 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-12 09:52:33,129 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-12 09:52:33,130 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-12 09:52:33,132 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-12 09:52:33,133 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-12 09:52:33,136 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-12 09:52:33,137 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-12 09:52:33,137 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-12 09:52:33,139 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-12 09:52:33,143 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-12 09:52:33,143 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-12 09:52:33,144 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-12 09:52:33,144 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-12 09:52:33,145 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-12 09:52:33,145 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-12 09:52:33,145 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-12 09:52:33,146 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-12 09:52:33,147 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-12 09:52:33,148 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-12 09:52:33,148 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-12 09:52:33,149 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-12 09:52:33,149 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-12 09:52:33,149 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-12 09:52:33,150 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-12 09:52:33,150 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-12 09:52:33,151 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-12 09:52:33,175 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-12 09:52:33,177 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-12 09:52:33,177 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-12 09:52:33,177 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-12 09:52:33,178 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-12 09:52:33,178 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-12 09:52:33,178 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-12 09:52:33,179 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-12 09:52:33,179 INFO L138 SettingsManager]: * Use SBE=true [2022-07-12 09:52:33,179 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-12 09:52:33,180 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-12 09:52:33,180 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-12 09:52:33,180 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-12 09:52:33,180 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-12 09:52:33,180 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-12 09:52:33,180 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-12 09:52:33,180 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-12 09:52:33,181 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-12 09:52:33,181 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-12 09:52:33,181 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-12 09:52:33,181 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-12 09:52:33,181 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-12 09:52:33,182 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-12 09:52:33,182 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-12 09:52:33,182 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-12 09:52:33,182 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-12 09:52:33,182 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-12 09:52:33,182 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-12 09:52:33,183 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-12 09:52:33,183 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-12 09:52:33,183 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-12 09:52:33,183 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-12 09:52:33,183 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-12 09:52:33,183 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 40fcfd4444bd180f6e5508f0972ed92e70894b01f23e03dc2e761819c6d5a859 [2022-07-12 09:52:33,376 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-12 09:52:33,402 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-12 09:52:33,404 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-12 09:52:33,405 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-12 09:52:33,406 INFO L275 PluginConnector]: CDTParser initialized [2022-07-12 09:52:33,407 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread/fib_safe-5.i [2022-07-12 09:52:33,449 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b17fd0d20/e7f131f7a0f742089f77e1e93cc251e7/FLAG511905d20 [2022-07-12 09:52:33,814 INFO L306 CDTParser]: Found 1 translation units. [2022-07-12 09:52:33,816 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread/fib_safe-5.i [2022-07-12 09:52:33,828 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b17fd0d20/e7f131f7a0f742089f77e1e93cc251e7/FLAG511905d20 [2022-07-12 09:52:34,190 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b17fd0d20/e7f131f7a0f742089f77e1e93cc251e7 [2022-07-12 09:52:34,192 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-12 09:52:34,194 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-12 09:52:34,196 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-12 09:52:34,197 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-12 09:52:34,199 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-12 09:52:34,199 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.07 09:52:34" (1/1) ... [2022-07-12 09:52:34,200 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@352522c8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 09:52:34, skipping insertion in model container [2022-07-12 09:52:34,200 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.07 09:52:34" (1/1) ... [2022-07-12 09:52:34,204 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-12 09:52:34,243 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-12 09:52:34,481 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/fib_safe-5.i[30813,30826] [2022-07-12 09:52:34,486 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-12 09:52:34,492 INFO L203 MainTranslator]: Completed pre-run [2022-07-12 09:52:34,525 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/fib_safe-5.i[30813,30826] [2022-07-12 09:52:34,532 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-12 09:52:34,556 INFO L208 MainTranslator]: Completed translation [2022-07-12 09:52:34,557 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 09:52:34 WrapperNode [2022-07-12 09:52:34,557 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-12 09:52:34,558 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-12 09:52:34,558 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-12 09:52:34,558 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-12 09:52:34,563 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 09:52:34" (1/1) ... [2022-07-12 09:52:34,584 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 09:52:34" (1/1) ... [2022-07-12 09:52:34,601 INFO L137 Inliner]: procedures = 164, calls = 26, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 71 [2022-07-12 09:52:34,602 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-12 09:52:34,603 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-12 09:52:34,603 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-12 09:52:34,603 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-12 09:52:34,608 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 09:52:34" (1/1) ... [2022-07-12 09:52:34,608 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 09:52:34" (1/1) ... [2022-07-12 09:52:34,612 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 09:52:34" (1/1) ... [2022-07-12 09:52:34,613 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 09:52:34" (1/1) ... [2022-07-12 09:52:34,626 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 09:52:34" (1/1) ... [2022-07-12 09:52:34,631 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 09:52:34" (1/1) ... [2022-07-12 09:52:34,632 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 09:52:34" (1/1) ... [2022-07-12 09:52:34,637 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-12 09:52:34,639 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-12 09:52:34,639 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-12 09:52:34,639 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-12 09:52:34,640 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 09:52:34" (1/1) ... [2022-07-12 09:52:34,645 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-12 09:52:34,653 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 09:52:34,662 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-07-12 09:52:34,663 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-07-12 09:52:34,684 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2022-07-12 09:52:34,684 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2022-07-12 09:52:34,684 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2022-07-12 09:52:34,684 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2022-07-12 09:52:34,685 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-07-12 09:52:34,685 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-07-12 09:52:34,685 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-12 09:52:34,685 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-12 09:52:34,685 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-12 09:52:34,685 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-12 09:52:34,685 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-07-12 09:52:34,686 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-12 09:52:34,686 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-12 09:52:34,687 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-07-12 09:52:34,752 INFO L234 CfgBuilder]: Building ICFG [2022-07-12 09:52:34,753 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-12 09:52:34,859 INFO L275 CfgBuilder]: Performing block encoding [2022-07-12 09:52:34,864 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-12 09:52:34,865 INFO L299 CfgBuilder]: Removed 3 assume(true) statements. [2022-07-12 09:52:34,866 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.07 09:52:34 BoogieIcfgContainer [2022-07-12 09:52:34,866 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-12 09:52:34,867 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-12 09:52:34,867 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-12 09:52:34,869 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-12 09:52:34,870 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.07 09:52:34" (1/3) ... [2022-07-12 09:52:34,870 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@129417c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.07 09:52:34, skipping insertion in model container [2022-07-12 09:52:34,870 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 09:52:34" (2/3) ... [2022-07-12 09:52:34,870 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@129417c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.07 09:52:34, skipping insertion in model container [2022-07-12 09:52:34,871 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.07 09:52:34" (3/3) ... [2022-07-12 09:52:34,871 INFO L111 eAbstractionObserver]: Analyzing ICFG fib_safe-5.i [2022-07-12 09:52:34,875 WARN L143 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-07-12 09:52:34,880 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-12 09:52:34,881 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-12 09:52:34,881 INFO L509 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-07-12 09:52:34,927 INFO L135 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-07-12 09:52:34,949 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 96 places, 96 transitions, 202 flow [2022-07-12 09:52:34,977 INFO L129 PetriNetUnfolder]: 7/94 cut-off events. [2022-07-12 09:52:34,977 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-07-12 09:52:34,981 INFO L84 FinitePrefix]: Finished finitePrefix Result has 101 conditions, 94 events. 7/94 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 73 event pairs, 0 based on Foata normal form. 0/86 useless extension candidates. Maximal degree in co-relation 64. Up to 2 conditions per place. [2022-07-12 09:52:34,981 INFO L82 GeneralOperation]: Start removeDead. Operand has 96 places, 96 transitions, 202 flow [2022-07-12 09:52:34,991 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 94 places, 94 transitions, 194 flow [2022-07-12 09:52:34,998 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-12 09:52:35,003 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=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, mPorIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@4dac6d1, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@79c41f95 [2022-07-12 09:52:35,003 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2022-07-12 09:52:35,025 INFO L129 PetriNetUnfolder]: 6/83 cut-off events. [2022-07-12 09:52:35,025 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-07-12 09:52:35,026 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 09:52:35,026 INFO L200 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] [2022-07-12 09:52:35,027 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-12 09:52:35,030 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:52:35,030 INFO L85 PathProgramCache]: Analyzing trace with hash -1927097680, now seen corresponding path program 1 times [2022-07-12 09:52:35,036 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 09:52:35,037 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [90613407] [2022-07-12 09:52:35,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:52:35,037 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 09:52:35,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:52:35,217 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 09:52:35,218 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 09:52:35,219 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [90613407] [2022-07-12 09:52:35,219 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [90613407] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 09:52:35,219 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 09:52:35,220 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-12 09:52:35,221 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [58405507] [2022-07-12 09:52:35,222 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 09:52:35,228 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-07-12 09:52:35,229 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 09:52:35,255 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-07-12 09:52:35,259 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-12 09:52:35,264 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 96 [2022-07-12 09:52:35,266 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 94 transitions, 194 flow. Second operand has 2 states, 2 states have (on average 90.5) internal successors, (181), 2 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 09:52:35,266 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 09:52:35,267 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 96 [2022-07-12 09:52:35,267 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 09:52:35,293 INFO L129 PetriNetUnfolder]: 3/89 cut-off events. [2022-07-12 09:52:35,293 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-07-12 09:52:35,294 INFO L84 FinitePrefix]: Finished finitePrefix Result has 99 conditions, 89 events. 3/89 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 64 event pairs, 0 based on Foata normal form. 5/90 useless extension candidates. Maximal degree in co-relation 60. Up to 3 conditions per place. [2022-07-12 09:52:35,295 INFO L132 encePairwiseOnDemand]: 92/96 looper letters, 2 selfloop transitions, 0 changer transitions 0/89 dead transitions. [2022-07-12 09:52:35,295 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 89 transitions, 188 flow [2022-07-12 09:52:35,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-07-12 09:52:35,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-07-12 09:52:35,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 184 transitions. [2022-07-12 09:52:35,303 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.9583333333333334 [2022-07-12 09:52:35,304 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 184 transitions. [2022-07-12 09:52:35,304 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 184 transitions. [2022-07-12 09:52:35,305 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 09:52:35,306 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 184 transitions. [2022-07-12 09:52:35,308 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 92.0) internal successors, (184), 2 states have internal predecessors, (184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 09:52:35,310 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 96.0) internal successors, (288), 3 states have internal predecessors, (288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 09:52:35,311 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 96.0) internal successors, (288), 3 states have internal predecessors, (288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 09:52:35,312 INFO L186 Difference]: Start difference. First operand has 94 places, 94 transitions, 194 flow. Second operand 2 states and 184 transitions. [2022-07-12 09:52:35,313 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 89 transitions, 188 flow [2022-07-12 09:52:35,315 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 89 transitions, 186 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-07-12 09:52:35,317 INFO L242 Difference]: Finished difference. Result has 92 places, 89 transitions, 182 flow [2022-07-12 09:52:35,318 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=96, PETRI_DIFFERENCE_MINUEND_FLOW=182, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=89, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=89, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=182, PETRI_PLACES=92, PETRI_TRANSITIONS=89} [2022-07-12 09:52:35,320 INFO L279 CegarLoopForPetriNet]: 94 programPoint places, -2 predicate places. [2022-07-12 09:52:35,321 INFO L495 AbstractCegarLoop]: Abstraction has has 92 places, 89 transitions, 182 flow [2022-07-12 09:52:35,321 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 90.5) internal successors, (181), 2 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 09:52:35,321 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 09:52:35,321 INFO L200 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] [2022-07-12 09:52:35,322 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-12 09:52:35,322 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-12 09:52:35,322 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:52:35,322 INFO L85 PathProgramCache]: Analyzing trace with hash 560415153, now seen corresponding path program 1 times [2022-07-12 09:52:35,323 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 09:52:35,323 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2099236338] [2022-07-12 09:52:35,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:52:35,323 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 09:52:35,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:52:35,372 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 09:52:35,372 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 09:52:35,372 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2099236338] [2022-07-12 09:52:35,372 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2099236338] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 09:52:35,372 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 09:52:35,373 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-12 09:52:35,373 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1073067075] [2022-07-12 09:52:35,373 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 09:52:35,374 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 09:52:35,374 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 09:52:35,374 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 09:52:35,375 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 09:52:35,375 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 96 [2022-07-12 09:52:35,376 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 89 transitions, 182 flow. Second operand has 3 states, 3 states have (on average 84.66666666666667) internal successors, (254), 3 states have internal predecessors, (254), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 09:52:35,376 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 09:52:35,376 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 96 [2022-07-12 09:52:35,376 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 09:52:35,398 INFO L129 PetriNetUnfolder]: 3/95 cut-off events. [2022-07-12 09:52:35,398 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-07-12 09:52:35,399 INFO L84 FinitePrefix]: Finished finitePrefix Result has 113 conditions, 95 events. 3/95 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 61 event pairs, 0 based on Foata normal form. 0/91 useless extension candidates. Maximal degree in co-relation 110. Up to 6 conditions per place. [2022-07-12 09:52:35,399 INFO L132 encePairwiseOnDemand]: 93/96 looper letters, 9 selfloop transitions, 2 changer transitions 0/92 dead transitions. [2022-07-12 09:52:35,399 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 92 transitions, 210 flow [2022-07-12 09:52:35,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 09:52:35,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-07-12 09:52:35,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 261 transitions. [2022-07-12 09:52:35,401 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.90625 [2022-07-12 09:52:35,401 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 261 transitions. [2022-07-12 09:52:35,401 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 261 transitions. [2022-07-12 09:52:35,402 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 09:52:35,402 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 261 transitions. [2022-07-12 09:52:35,403 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 87.0) internal successors, (261), 3 states have internal predecessors, (261), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 09:52:35,404 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 96.0) internal successors, (384), 4 states have internal predecessors, (384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 09:52:35,405 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 96.0) internal successors, (384), 4 states have internal predecessors, (384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 09:52:35,405 INFO L186 Difference]: Start difference. First operand has 92 places, 89 transitions, 182 flow. Second operand 3 states and 261 transitions. [2022-07-12 09:52:35,405 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 92 transitions, 210 flow [2022-07-12 09:52:35,406 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 92 transitions, 210 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-07-12 09:52:35,407 INFO L242 Difference]: Finished difference. Result has 95 places, 90 transitions, 194 flow [2022-07-12 09:52:35,407 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=96, PETRI_DIFFERENCE_MINUEND_FLOW=182, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=89, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=87, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=194, PETRI_PLACES=95, PETRI_TRANSITIONS=90} [2022-07-12 09:52:35,408 INFO L279 CegarLoopForPetriNet]: 94 programPoint places, 1 predicate places. [2022-07-12 09:52:35,408 INFO L495 AbstractCegarLoop]: Abstraction has has 95 places, 90 transitions, 194 flow [2022-07-12 09:52:35,409 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 84.66666666666667) internal successors, (254), 3 states have internal predecessors, (254), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 09:52:35,409 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 09:52:35,409 INFO L200 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] [2022-07-12 09:52:35,409 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-12 09:52:35,409 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-12 09:52:35,410 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:52:35,410 INFO L85 PathProgramCache]: Analyzing trace with hash -951035470, now seen corresponding path program 1 times [2022-07-12 09:52:35,410 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 09:52:35,410 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [637170903] [2022-07-12 09:52:35,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:52:35,410 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 09:52:35,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:52:35,462 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 09:52:35,462 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 09:52:35,462 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [637170903] [2022-07-12 09:52:35,462 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [637170903] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 09:52:35,462 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1079936750] [2022-07-12 09:52:35,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:52:35,463 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 09:52:35,463 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 09:52:35,484 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-12 09:52:35,485 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-07-12 09:52:35,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:52:35,552 INFO L263 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-12 09:52:35,556 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 09:52:35,597 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 09:52:35,597 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-12 09:52:35,625 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 09:52:35,625 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1079936750] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-12 09:52:35,625 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-12 09:52:35,625 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2022-07-12 09:52:35,626 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1115053405] [2022-07-12 09:52:35,626 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-12 09:52:35,626 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-12 09:52:35,626 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 09:52:35,627 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-12 09:52:35,627 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2022-07-12 09:52:35,628 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 81 out of 96 [2022-07-12 09:52:35,629 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 90 transitions, 194 flow. Second operand has 10 states, 10 states have (on average 83.0) internal successors, (830), 10 states have internal predecessors, (830), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 09:52:35,629 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 09:52:35,629 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 81 of 96 [2022-07-12 09:52:35,629 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 09:52:35,680 INFO L129 PetriNetUnfolder]: 3/104 cut-off events. [2022-07-12 09:52:35,680 INFO L130 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-07-12 09:52:35,681 INFO L84 FinitePrefix]: Finished finitePrefix Result has 138 conditions, 104 events. 3/104 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 52 event pairs, 0 based on Foata normal form. 2/103 useless extension candidates. Maximal degree in co-relation 133. Up to 6 conditions per place. [2022-07-12 09:52:35,681 INFO L132 encePairwiseOnDemand]: 90/96 looper letters, 10 selfloop transitions, 9 changer transitions 0/98 dead transitions. [2022-07-12 09:52:35,681 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 98 transitions, 250 flow [2022-07-12 09:52:35,681 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-12 09:52:35,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-07-12 09:52:35,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 750 transitions. [2022-07-12 09:52:35,684 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8680555555555556 [2022-07-12 09:52:35,684 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 750 transitions. [2022-07-12 09:52:35,684 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 750 transitions. [2022-07-12 09:52:35,685 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 09:52:35,685 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 750 transitions. [2022-07-12 09:52:35,686 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 83.33333333333333) internal successors, (750), 9 states have internal predecessors, (750), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 09:52:35,688 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 96.0) internal successors, (960), 10 states have internal predecessors, (960), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 09:52:35,689 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 96.0) internal successors, (960), 10 states have internal predecessors, (960), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 09:52:35,689 INFO L186 Difference]: Start difference. First operand has 95 places, 90 transitions, 194 flow. Second operand 9 states and 750 transitions. [2022-07-12 09:52:35,689 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 103 places, 98 transitions, 250 flow [2022-07-12 09:52:35,690 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 98 transitions, 248 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-07-12 09:52:35,691 INFO L242 Difference]: Finished difference. Result has 105 places, 96 transitions, 242 flow [2022-07-12 09:52:35,691 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=96, PETRI_DIFFERENCE_MINUEND_FLOW=192, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=90, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=84, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=242, PETRI_PLACES=105, PETRI_TRANSITIONS=96} [2022-07-12 09:52:35,692 INFO L279 CegarLoopForPetriNet]: 94 programPoint places, 11 predicate places. [2022-07-12 09:52:35,692 INFO L495 AbstractCegarLoop]: Abstraction has has 105 places, 96 transitions, 242 flow [2022-07-12 09:52:35,693 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 83.0) internal successors, (830), 10 states have internal predecessors, (830), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 09:52:35,693 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 09:52:35,693 INFO L200 CegarLoopForPetriNet]: trace histogram [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] [2022-07-12 09:52:35,712 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-07-12 09:52:35,909 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 09:52:35,909 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-12 09:52:35,910 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:52:35,910 INFO L85 PathProgramCache]: Analyzing trace with hash 1666707666, now seen corresponding path program 2 times [2022-07-12 09:52:35,910 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 09:52:35,910 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1768170385] [2022-07-12 09:52:35,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:52:35,911 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 09:52:35,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:52:36,022 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 09:52:36,024 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 09:52:36,024 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1768170385] [2022-07-12 09:52:36,024 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1768170385] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 09:52:36,024 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1540633419] [2022-07-12 09:52:36,024 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-12 09:52:36,025 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 09:52:36,025 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 09:52:36,026 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-12 09:52:36,028 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-07-12 09:52:36,116 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-07-12 09:52:36,117 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-12 09:52:36,118 INFO L263 TraceCheckSpWp]: Trace formula consists of 176 conjuncts, 8 conjunts are in the unsatisfiable core [2022-07-12 09:52:36,123 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 09:52:36,187 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 09:52:36,187 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-12 09:52:36,254 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 09:52:36,254 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1540633419] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-12 09:52:36,254 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-12 09:52:36,254 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 18 [2022-07-12 09:52:36,255 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [37150815] [2022-07-12 09:52:36,255 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-12 09:52:36,255 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-07-12 09:52:36,255 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 09:52:36,256 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-07-12 09:52:36,256 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=216, Unknown=0, NotChecked=0, Total=306 [2022-07-12 09:52:36,257 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 81 out of 96 [2022-07-12 09:52:36,258 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 105 places, 96 transitions, 242 flow. Second operand has 18 states, 18 states have (on average 83.0) internal successors, (1494), 18 states have internal predecessors, (1494), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 09:52:36,259 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 09:52:36,259 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 81 of 96 [2022-07-12 09:52:36,259 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 09:52:36,395 INFO L129 PetriNetUnfolder]: 3/132 cut-off events. [2022-07-12 09:52:36,396 INFO L130 PetriNetUnfolder]: For 30/30 co-relation queries the response was YES. [2022-07-12 09:52:36,396 INFO L84 FinitePrefix]: Finished finitePrefix Result has 231 conditions, 132 events. 3/132 cut-off events. For 30/30 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 52 event pairs, 0 based on Foata normal form. 4/133 useless extension candidates. Maximal degree in co-relation 224. Up to 11 conditions per place. [2022-07-12 09:52:36,397 INFO L132 encePairwiseOnDemand]: 90/96 looper letters, 14 selfloop transitions, 21 changer transitions 0/114 dead transitions. [2022-07-12 09:52:36,397 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 125 places, 114 transitions, 408 flow [2022-07-12 09:52:36,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-07-12 09:52:36,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2022-07-12 09:52:36,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 1740 transitions. [2022-07-12 09:52:36,400 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8630952380952381 [2022-07-12 09:52:36,400 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 1740 transitions. [2022-07-12 09:52:36,400 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 1740 transitions. [2022-07-12 09:52:36,401 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 09:52:36,401 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 1740 transitions. [2022-07-12 09:52:36,404 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 82.85714285714286) internal successors, (1740), 21 states have internal predecessors, (1740), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 09:52:36,406 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 96.0) internal successors, (2112), 22 states have internal predecessors, (2112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 09:52:36,407 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 96.0) internal successors, (2112), 22 states have internal predecessors, (2112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 09:52:36,407 INFO L186 Difference]: Start difference. First operand has 105 places, 96 transitions, 242 flow. Second operand 21 states and 1740 transitions. [2022-07-12 09:52:36,407 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 125 places, 114 transitions, 408 flow [2022-07-12 09:52:36,408 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 124 places, 114 transitions, 394 flow, removed 6 selfloop flow, removed 1 redundant places. [2022-07-12 09:52:36,410 INFO L242 Difference]: Finished difference. Result has 129 places, 109 transitions, 366 flow [2022-07-12 09:52:36,410 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=96, PETRI_DIFFERENCE_MINUEND_FLOW=236, PETRI_DIFFERENCE_MINUEND_PLACES=104, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=96, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=85, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=366, PETRI_PLACES=129, PETRI_TRANSITIONS=109} [2022-07-12 09:52:36,411 INFO L279 CegarLoopForPetriNet]: 94 programPoint places, 35 predicate places. [2022-07-12 09:52:36,411 INFO L495 AbstractCegarLoop]: Abstraction has has 129 places, 109 transitions, 366 flow [2022-07-12 09:52:36,411 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 83.0) internal successors, (1494), 18 states have internal predecessors, (1494), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 09:52:36,412 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 09:52:36,412 INFO L200 CegarLoopForPetriNet]: trace histogram [7, 7, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 09:52:36,430 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-07-12 09:52:36,630 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2022-07-12 09:52:36,630 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-12 09:52:36,631 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:52:36,631 INFO L85 PathProgramCache]: Analyzing trace with hash -1283180782, now seen corresponding path program 3 times [2022-07-12 09:52:36,631 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 09:52:36,631 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [545596250] [2022-07-12 09:52:36,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:52:36,631 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 09:52:36,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:52:36,839 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 0 proven. 154 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 09:52:36,839 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 09:52:36,839 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [545596250] [2022-07-12 09:52:36,839 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [545596250] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 09:52:36,840 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1792325981] [2022-07-12 09:52:36,840 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-07-12 09:52:36,840 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 09:52:36,840 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 09:52:36,842 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-12 09:52:36,843 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-07-12 09:52:36,907 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2022-07-12 09:52:36,907 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-12 09:52:36,908 INFO L263 TraceCheckSpWp]: Trace formula consists of 224 conjuncts, 16 conjunts are in the unsatisfiable core [2022-07-12 09:52:36,910 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 09:52:36,985 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 0 proven. 154 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 09:52:36,985 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-12 09:52:37,162 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 0 proven. 154 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 09:52:37,162 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1792325981] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-12 09:52:37,162 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-12 09:52:37,162 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 27 [2022-07-12 09:52:37,163 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1998304078] [2022-07-12 09:52:37,163 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-12 09:52:37,163 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-07-12 09:52:37,163 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 09:52:37,164 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-07-12 09:52:37,164 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=195, Invalid=507, Unknown=0, NotChecked=0, Total=702 [2022-07-12 09:52:37,167 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 81 out of 96 [2022-07-12 09:52:37,168 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 129 places, 109 transitions, 366 flow. Second operand has 27 states, 27 states have (on average 83.07407407407408) internal successors, (2243), 27 states have internal predecessors, (2243), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 09:52:37,168 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 09:52:37,169 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 81 of 96 [2022-07-12 09:52:37,169 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 09:52:37,496 INFO L129 PetriNetUnfolder]: 3/167 cut-off events. [2022-07-12 09:52:37,497 INFO L130 PetriNetUnfolder]: For 184/184 co-relation queries the response was YES. [2022-07-12 09:52:37,498 INFO L84 FinitePrefix]: Finished finitePrefix Result has 381 conditions, 167 events. 3/167 cut-off events. For 184/184 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 52 event pairs, 0 based on Foata normal form. 5/169 useless extension candidates. Maximal degree in co-relation 369. Up to 21 conditions per place. [2022-07-12 09:52:37,499 INFO L132 encePairwiseOnDemand]: 90/96 looper letters, 19 selfloop transitions, 36 changer transitions 0/134 dead transitions. [2022-07-12 09:52:37,499 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 164 places, 134 transitions, 668 flow [2022-07-12 09:52:37,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2022-07-12 09:52:37,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2022-07-12 09:52:37,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 2976 transitions. [2022-07-12 09:52:37,504 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8611111111111112 [2022-07-12 09:52:37,504 INFO L72 ComplementDD]: Start complementDD. Operand 36 states and 2976 transitions. [2022-07-12 09:52:37,504 INFO L73 IsDeterministic]: Start isDeterministic. Operand 36 states and 2976 transitions. [2022-07-12 09:52:37,505 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 09:52:37,505 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 36 states and 2976 transitions. [2022-07-12 09:52:37,509 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 37 states, 36 states have (on average 82.66666666666667) internal successors, (2976), 36 states have internal predecessors, (2976), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 09:52:37,514 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 37 states, 37 states have (on average 96.0) internal successors, (3552), 37 states have internal predecessors, (3552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 09:52:37,515 INFO L81 ComplementDD]: Finished complementDD. Result has 37 states, 37 states have (on average 96.0) internal successors, (3552), 37 states have internal predecessors, (3552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 09:52:37,515 INFO L186 Difference]: Start difference. First operand has 129 places, 109 transitions, 366 flow. Second operand 36 states and 2976 transitions. [2022-07-12 09:52:37,515 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 164 places, 134 transitions, 668 flow [2022-07-12 09:52:37,518 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 158 places, 134 transitions, 634 flow, removed 11 selfloop flow, removed 6 redundant places. [2022-07-12 09:52:37,520 INFO L242 Difference]: Finished difference. Result has 164 places, 125 transitions, 554 flow [2022-07-12 09:52:37,520 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=96, PETRI_DIFFERENCE_MINUEND_FLOW=342, PETRI_DIFFERENCE_MINUEND_PLACES=123, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=109, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=36, PETRI_FLOW=554, PETRI_PLACES=164, PETRI_TRANSITIONS=125} [2022-07-12 09:52:37,521 INFO L279 CegarLoopForPetriNet]: 94 programPoint places, 70 predicate places. [2022-07-12 09:52:37,521 INFO L495 AbstractCegarLoop]: Abstraction has has 164 places, 125 transitions, 554 flow [2022-07-12 09:52:37,522 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 83.07407407407408) internal successors, (2243), 27 states have internal predecessors, (2243), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 09:52:37,522 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 09:52:37,523 INFO L200 CegarLoopForPetriNet]: trace histogram [12, 12, 12, 12, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 09:52:37,543 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-07-12 09:52:37,739 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 09:52:37,740 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-12 09:52:37,741 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:52:37,741 INFO L85 PathProgramCache]: Analyzing trace with hash 1938020081, now seen corresponding path program 4 times [2022-07-12 09:52:37,741 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 09:52:37,741 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1550001315] [2022-07-12 09:52:37,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:52:37,741 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 09:52:37,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:52:38,739 INFO L134 CoverageAnalysis]: Checked inductivity of 474 backedges. 0 proven. 474 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 09:52:38,739 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 09:52:38,739 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1550001315] [2022-07-12 09:52:38,740 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1550001315] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 09:52:38,740 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [630607347] [2022-07-12 09:52:38,740 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-07-12 09:52:38,740 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 09:52:38,740 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 09:52:38,741 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-12 09:52:38,743 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-07-12 09:52:38,809 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-07-12 09:52:38,809 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-12 09:52:38,810 INFO L263 TraceCheckSpWp]: Trace formula consists of 267 conjuncts, 41 conjunts are in the unsatisfiable core [2022-07-12 09:52:38,813 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 09:52:40,986 INFO L134 CoverageAnalysis]: Checked inductivity of 474 backedges. 335 proven. 139 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 09:52:40,987 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-12 09:55:37,463 INFO L134 CoverageAnalysis]: Checked inductivity of 474 backedges. 0 proven. 472 refuted. 2 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 09:55:37,464 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [630607347] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-12 09:55:37,464 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-12 09:55:37,464 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [42, 42, 42] total 121 [2022-07-12 09:55:37,464 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1822086450] [2022-07-12 09:55:37,464 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-12 09:55:37,465 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 121 states [2022-07-12 09:55:37,465 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 09:55:37,466 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 121 interpolants. [2022-07-12 09:55:37,470 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=965, Invalid=13502, Unknown=53, NotChecked=0, Total=14520 [2022-07-12 09:55:37,478 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 96 [2022-07-12 09:55:37,487 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 164 places, 125 transitions, 554 flow. Second operand has 121 states, 121 states have (on average 69.27272727272727) internal successors, (8382), 121 states have internal predecessors, (8382), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 09:55:37,488 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 09:55:37,488 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 96 [2022-07-12 09:55:37,488 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 09:55:40,078 WARN L833 $PredicateComparison]: unable to prove that (let ((.cse5 (* 2 c_~cur~0))) (let ((.cse1 (* (- 1) c_~i~0)) (.cse0 (+ .cse5 c_~prev~0)) (.cse2 (+ c_~prev~0 1 c_~cur~0)) (.cse4 (* (- 1) c_~j~0)) (.cse3 (+ .cse5 3 c_~prev~0))) (and (forall ((aux_div_v_~next~0_20_56 Int) (v_~cur~0_22 Int) (v_~cur~0_24 Int) (aux_mod_v_~next~0_20_56 Int)) (or (<= (+ (* 5 aux_div_v_~next~0_20_56) v_~cur~0_22) (+ 20 (* 2 c_~i~0) (* aux_mod_v_~next~0_20_56 2))) (< (+ aux_mod_v_~next~0_20_56 c_~i~0 8) (+ (* 2 v_~cur~0_22) (* 2 aux_div_v_~next~0_20_56) v_~cur~0_24 c_~cur~0)) (< v_~cur~0_22 (+ (* 2 v_~cur~0_24) c_~cur~0)) (>= aux_mod_v_~next~0_20_56 2) (< v_~cur~0_24 (+ c_~prev~0 c_~cur~0)) (> 0 aux_mod_v_~next~0_20_56))) (forall ((aux_div_v_~next~0_20_56 Int) (v_~cur~0_22 Int) (aux_mod_v_~next~0_20_56 Int)) (or (< (+ aux_mod_v_~next~0_20_56 c_~j~0 8) (+ (* 2 v_~cur~0_22) (* 2 aux_div_v_~next~0_20_56) c_~cur~0)) (<= (+ (* 5 aux_div_v_~next~0_20_56) v_~cur~0_22) (+ 20 (* 2 c_~j~0) (* aux_mod_v_~next~0_20_56 2))) (< v_~cur~0_22 (+ c_~prev~0 c_~cur~0)) (>= aux_mod_v_~next~0_20_56 2) (> 0 aux_mod_v_~next~0_20_56))) (forall ((aux_div_v_~next~0_20_56 Int) (v_~cur~0_22 Int) (aux_mod_v_~next~0_20_56 Int)) (or (<= (+ (* 5 aux_div_v_~next~0_20_56) v_~cur~0_22) (+ 20 (* 2 c_~i~0) (* aux_mod_v_~next~0_20_56 2))) (>= aux_mod_v_~next~0_20_56 2) (< v_~cur~0_22 (+ (* 2 c_~cur~0) c_~prev~0)) (< (+ aux_mod_v_~next~0_20_56 c_~i~0 8) (+ (* 2 v_~cur~0_22) c_~prev~0 (* 2 aux_div_v_~next~0_20_56) c_~cur~0)) (> 0 aux_mod_v_~next~0_20_56))) (<= c_~j~0 .cse0) (forall ((aux_div_v_~next~0_20_56 Int) (v_~cur~0_22 Int) (v_~cur~0_24 Int) (aux_mod_v_~next~0_20_56 Int)) (or (<= (+ (* 5 aux_div_v_~next~0_20_56) v_~cur~0_22) (+ 20 (* 2 c_~i~0) (* aux_mod_v_~next~0_20_56 2))) (>= aux_mod_v_~next~0_20_56 2) (< (+ aux_mod_v_~next~0_20_56 c_~i~0 8) (+ (* 2 v_~cur~0_22) c_~prev~0 (* 2 aux_div_v_~next~0_20_56) v_~cur~0_24 c_~cur~0)) (< v_~cur~0_22 (+ (* 2 v_~cur~0_24) c_~prev~0 c_~cur~0)) (< v_~cur~0_24 (+ (* 2 c_~cur~0) c_~prev~0)) (> 0 aux_mod_v_~next~0_20_56))) (<= (div (+ (- 2) .cse1 c_~cur~0) (- 2)) .cse2) (forall ((aux_div_v_~next~0_20_56 Int) (v_~cur~0_22 Int) (aux_mod_v_~next~0_20_56 Int)) (or (<= (+ (* 5 aux_div_v_~next~0_20_56) v_~cur~0_22) (+ 20 (* 2 c_~i~0) (* aux_mod_v_~next~0_20_56 2))) (< v_~cur~0_22 (+ c_~prev~0 c_~cur~0)) (< (+ aux_mod_v_~next~0_20_56 c_~i~0 8) (+ (* 2 v_~cur~0_22) (* 2 aux_div_v_~next~0_20_56) c_~cur~0)) (>= aux_mod_v_~next~0_20_56 2) (> 0 aux_mod_v_~next~0_20_56))) (= c_~prev~0 0) (<= (div (+ c_~prev~0 .cse1 (- 6) c_~cur~0) (- 2)) .cse3) (forall ((aux_div_v_~next~0_20_56 Int) (aux_mod_v_~next~0_20_56 Int)) (or (<= (+ (* 5 aux_div_v_~next~0_20_56) c_~cur~0) (+ 20 (* 2 c_~j~0) (* aux_mod_v_~next~0_20_56 2))) (not (<= (+ (* 2 c_~cur~0) c_~prev~0 (* 2 aux_div_v_~next~0_20_56)) (+ aux_mod_v_~next~0_20_56 c_~j~0 8))) (>= aux_mod_v_~next~0_20_56 2) (> 0 aux_mod_v_~next~0_20_56))) (forall ((aux_div_v_~next~0_20_56 Int) (v_~cur~0_22 Int) (v_~cur~0_24 Int) (aux_mod_v_~next~0_20_56 Int)) (or (<= (+ (* 5 aux_div_v_~next~0_20_56) v_~cur~0_22) (+ 20 (* 2 c_~j~0) (* aux_mod_v_~next~0_20_56 2))) (>= aux_mod_v_~next~0_20_56 2) (< (+ aux_mod_v_~next~0_20_56 c_~j~0 8) (+ (* 2 v_~cur~0_22) c_~prev~0 (* 2 aux_div_v_~next~0_20_56) v_~cur~0_24 c_~cur~0)) (< v_~cur~0_22 (+ (* 2 v_~cur~0_24) c_~prev~0 c_~cur~0)) (< v_~cur~0_24 (+ (* 2 c_~cur~0) c_~prev~0)) (> 0 aux_mod_v_~next~0_20_56))) (<= c_~i~0 .cse0) (= 1 c_~cur~0) (forall ((aux_div_v_~next~0_20_56 Int) (aux_mod_v_~next~0_20_56 Int)) (or (<= (+ (* 5 aux_div_v_~next~0_20_56) c_~cur~0) (+ 20 (* 2 c_~i~0) (* aux_mod_v_~next~0_20_56 2))) (>= aux_mod_v_~next~0_20_56 2) (not (<= (+ (* 2 c_~cur~0) c_~prev~0 (* 2 aux_div_v_~next~0_20_56)) (+ aux_mod_v_~next~0_20_56 c_~i~0 8))) (> 0 aux_mod_v_~next~0_20_56))) (forall ((aux_div_v_~next~0_20_56 Int) (v_~cur~0_22 Int) (v_~cur~0_24 Int) (v_~cur~0_26 Int) (aux_mod_v_~next~0_20_56 Int)) (or (<= (+ (* 5 aux_div_v_~next~0_20_56) v_~cur~0_22) (+ 20 (* 2 c_~i~0) (* aux_mod_v_~next~0_20_56 2))) (< v_~cur~0_22 (+ (* 2 v_~cur~0_24) c_~prev~0 v_~cur~0_26 c_~cur~0)) (>= aux_mod_v_~next~0_20_56 2) (< (+ aux_mod_v_~next~0_20_56 c_~i~0 8) (+ (* 2 v_~cur~0_22) c_~prev~0 (* 2 aux_div_v_~next~0_20_56) v_~cur~0_26 v_~cur~0_24 c_~cur~0)) (< v_~cur~0_24 (+ (* 2 v_~cur~0_26) c_~prev~0 c_~cur~0)) (< v_~cur~0_26 (+ (* 2 c_~cur~0) c_~prev~0)) (> 0 aux_mod_v_~next~0_20_56))) (forall ((aux_div_v_~next~0_20_56 Int) (v_~cur~0_22 Int) (v_~cur~0_24 Int) (v_~cur~0_26 Int) (aux_mod_v_~next~0_20_56 Int)) (or (<= (+ (* 5 aux_div_v_~next~0_20_56) v_~cur~0_22) (+ 20 (* 2 c_~i~0) (* aux_mod_v_~next~0_20_56 2))) (< v_~cur~0_22 (+ (* 2 v_~cur~0_24) v_~cur~0_26 c_~cur~0)) (< v_~cur~0_26 (+ c_~prev~0 c_~cur~0)) (>= aux_mod_v_~next~0_20_56 2) (< (+ aux_mod_v_~next~0_20_56 c_~i~0 8) (+ (* 2 v_~cur~0_22) (* 2 aux_div_v_~next~0_20_56) v_~cur~0_26 v_~cur~0_24 c_~cur~0)) (< v_~cur~0_24 (+ (* 2 v_~cur~0_26) c_~cur~0)) (> 0 aux_mod_v_~next~0_20_56))) (forall ((v_~j~0_8 Int)) (or (forall ((aux_div_v_~next~0_20_56 Int) (v_~cur~0_22 Int) (v_~cur~0_24 Int) (v_~cur~0_26 Int) (aux_mod_v_~next~0_20_56 Int)) (or (< v_~cur~0_22 (+ (* 2 v_~cur~0_24) c_~prev~0 v_~cur~0_26 c_~cur~0)) (>= aux_mod_v_~next~0_20_56 2) (<= (+ (* 5 aux_div_v_~next~0_20_56) v_~cur~0_22) (+ 20 (* 2 v_~j~0_8) (* aux_mod_v_~next~0_20_56 2))) (< v_~cur~0_24 (+ (* 2 v_~cur~0_26) c_~prev~0 c_~cur~0)) (< (+ aux_mod_v_~next~0_20_56 8 v_~j~0_8) (+ (* 2 v_~cur~0_22) c_~prev~0 (* 2 aux_div_v_~next~0_20_56) v_~cur~0_26 v_~cur~0_24 c_~cur~0)) (< v_~cur~0_26 (+ (* 2 c_~cur~0) c_~prev~0)) (> 0 aux_mod_v_~next~0_20_56))) (not (<= v_~j~0_8 1)))) (forall ((aux_div_v_~next~0_20_56 Int) (v_~cur~0_22 Int) (aux_mod_v_~next~0_20_56 Int)) (or (<= (+ (* 5 aux_div_v_~next~0_20_56) v_~cur~0_22) (+ 20 (* 2 c_~j~0) (* aux_mod_v_~next~0_20_56 2))) (< (+ aux_mod_v_~next~0_20_56 c_~j~0 8) (+ (* 2 v_~cur~0_22) c_~prev~0 (* 2 aux_div_v_~next~0_20_56) c_~cur~0)) (>= aux_mod_v_~next~0_20_56 2) (< v_~cur~0_22 (+ (* 2 c_~cur~0) c_~prev~0)) (> 0 aux_mod_v_~next~0_20_56))) (forall ((aux_div_v_~next~0_20_56 Int) (v_~cur~0_22 Int) (v_~cur~0_24 Int) (v_~cur~0_26 Int) (aux_mod_v_~next~0_20_56 Int)) (or (<= (+ (* 5 aux_div_v_~next~0_20_56) v_~cur~0_22) (+ 20 (* 2 c_~j~0) (* aux_mod_v_~next~0_20_56 2))) (< v_~cur~0_22 (+ (* 2 v_~cur~0_24) c_~prev~0 v_~cur~0_26 c_~cur~0)) (< (+ aux_mod_v_~next~0_20_56 c_~j~0 8) (+ (* 2 v_~cur~0_22) c_~prev~0 (* 2 aux_div_v_~next~0_20_56) v_~cur~0_26 v_~cur~0_24 c_~cur~0)) (>= aux_mod_v_~next~0_20_56 2) (< v_~cur~0_24 (+ (* 2 v_~cur~0_26) c_~prev~0 c_~cur~0)) (< v_~cur~0_26 (+ (* 2 c_~cur~0) c_~prev~0)) (> 0 aux_mod_v_~next~0_20_56))) (<= (div (+ (- 2) .cse4 c_~cur~0) (- 2)) .cse2) (<= (div (+ c_~prev~0 .cse4 (- 6) c_~cur~0) (- 2)) .cse3) (forall ((aux_div_v_~next~0_20_56 Int) (v_~cur~0_22 Int) (v_~cur~0_24 Int) (aux_mod_v_~next~0_20_56 Int)) (or (<= (+ (* 5 aux_div_v_~next~0_20_56) v_~cur~0_22) (+ 20 (* 2 c_~j~0) (* aux_mod_v_~next~0_20_56 2))) (< (+ aux_mod_v_~next~0_20_56 c_~j~0 8) (+ (* 2 v_~cur~0_22) (* 2 aux_div_v_~next~0_20_56) v_~cur~0_24 c_~cur~0)) (< v_~cur~0_22 (+ (* 2 v_~cur~0_24) c_~cur~0)) (>= aux_mod_v_~next~0_20_56 2) (< v_~cur~0_24 (+ c_~prev~0 c_~cur~0)) (> 0 aux_mod_v_~next~0_20_56))) (forall ((aux_div_v_~next~0_20_56 Int) (v_~cur~0_22 Int) (v_~cur~0_24 Int) (v_~cur~0_26 Int) (aux_mod_v_~next~0_20_56 Int)) (or (<= (+ (* 5 aux_div_v_~next~0_20_56) v_~cur~0_22) (+ 20 (* 2 c_~j~0) (* aux_mod_v_~next~0_20_56 2))) (< (+ aux_mod_v_~next~0_20_56 c_~j~0 8) (+ (* 2 v_~cur~0_22) (* 2 aux_div_v_~next~0_20_56) v_~cur~0_26 v_~cur~0_24 c_~cur~0)) (< v_~cur~0_22 (+ (* 2 v_~cur~0_24) v_~cur~0_26 c_~cur~0)) (< v_~cur~0_26 (+ c_~prev~0 c_~cur~0)) (>= aux_mod_v_~next~0_20_56 2) (< v_~cur~0_24 (+ (* 2 v_~cur~0_26) c_~cur~0)) (> 0 aux_mod_v_~next~0_20_56)))))) is different from false