./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/weaver/test-easy10.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version c3fed411 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/weaver/test-easy10.wvr.c -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 5b38e7cb0150abfd3f300ad6ccdd66bb35d80de0668e553c35b4b9d13b84c85b --- Real Ultimate output --- This is Ultimate 0.2.2-tmp.no-commuhash-c3fed41 [2021-12-17 23:17:42,076 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-17 23:17:42,079 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-17 23:17:42,129 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-17 23:17:42,130 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-17 23:17:42,133 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-17 23:17:42,135 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-17 23:17:42,137 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-17 23:17:42,139 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-17 23:17:42,143 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-17 23:17:42,144 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-17 23:17:42,145 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-17 23:17:42,145 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-17 23:17:42,148 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-17 23:17:42,149 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-17 23:17:42,152 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-17 23:17:42,153 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-17 23:17:42,154 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-17 23:17:42,156 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-17 23:17:42,162 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-17 23:17:42,163 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-17 23:17:42,164 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-17 23:17:42,165 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-17 23:17:42,166 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-17 23:17:42,172 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-17 23:17:42,172 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-17 23:17:42,172 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-17 23:17:42,174 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-17 23:17:42,174 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-17 23:17:42,175 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-17 23:17:42,175 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-17 23:17:42,176 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-17 23:17:42,177 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-17 23:17:42,179 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-17 23:17:42,180 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-17 23:17:42,180 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-17 23:17:42,181 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-17 23:17:42,181 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-17 23:17:42,182 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-17 23:17:42,182 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-17 23:17:42,183 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-17 23:17:42,184 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-17 23:17:42,216 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-17 23:17:42,216 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-17 23:17:42,217 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-17 23:17:42,217 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-17 23:17:42,218 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-17 23:17:42,218 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-17 23:17:42,219 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-17 23:17:42,219 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-17 23:17:42,219 INFO L138 SettingsManager]: * Use SBE=true [2021-12-17 23:17:42,219 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-17 23:17:42,220 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-17 23:17:42,220 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-17 23:17:42,220 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-17 23:17:42,221 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-17 23:17:42,221 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-17 23:17:42,221 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-17 23:17:42,221 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-17 23:17:42,221 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-17 23:17:42,221 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-17 23:17:42,222 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-17 23:17:42,222 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-17 23:17:42,222 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-17 23:17:42,222 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-17 23:17:42,222 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-17 23:17:42,223 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-17 23:17:42,223 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-17 23:17:42,223 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-17 23:17:42,223 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-17 23:17:42,223 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-17 23:17:42,224 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-17 23:17:42,224 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-17 23:17:42,224 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-17 23:17:42,224 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-17 23:17:42,224 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-17 23:17:42,225 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5b38e7cb0150abfd3f300ad6ccdd66bb35d80de0668e553c35b4b9d13b84c85b [2021-12-17 23:17:42,477 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-17 23:17:42,500 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-17 23:17:42,502 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-17 23:17:42,503 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-17 23:17:42,503 INFO L275 PluginConnector]: CDTParser initialized [2021-12-17 23:17:42,504 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/test-easy10.wvr.c [2021-12-17 23:17:42,564 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/34eb1a568/87d353c896374c289871bb99b28e28b9/FLAGb7b0a3dff [2021-12-17 23:17:42,971 INFO L306 CDTParser]: Found 1 translation units. [2021-12-17 23:17:42,972 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/test-easy10.wvr.c [2021-12-17 23:17:42,980 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/34eb1a568/87d353c896374c289871bb99b28e28b9/FLAGb7b0a3dff [2021-12-17 23:17:43,378 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/34eb1a568/87d353c896374c289871bb99b28e28b9 [2021-12-17 23:17:43,380 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-17 23:17:43,381 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-17 23:17:43,384 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-17 23:17:43,385 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-17 23:17:43,387 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-17 23:17:43,388 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.12 11:17:43" (1/1) ... [2021-12-17 23:17:43,390 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1ef09406 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 11:17:43, skipping insertion in model container [2021-12-17 23:17:43,390 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.12 11:17:43" (1/1) ... [2021-12-17 23:17:43,395 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-17 23:17:43,417 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-17 23:17:43,596 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/weaver/test-easy10.wvr.c[3907,3920] [2021-12-17 23:17:43,599 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-17 23:17:43,605 INFO L203 MainTranslator]: Completed pre-run [2021-12-17 23:17:43,627 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/weaver/test-easy10.wvr.c[3907,3920] [2021-12-17 23:17:43,628 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-17 23:17:43,639 INFO L208 MainTranslator]: Completed translation [2021-12-17 23:17:43,639 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 11:17:43 WrapperNode [2021-12-17 23:17:43,639 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-17 23:17:43,640 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-17 23:17:43,640 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-17 23:17:43,640 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-17 23:17:43,646 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 11:17:43" (1/1) ... [2021-12-17 23:17:43,653 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 11:17:43" (1/1) ... [2021-12-17 23:17:43,684 INFO L137 Inliner]: procedures = 23, calls = 84, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 188 [2021-12-17 23:17:43,686 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-17 23:17:43,687 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-17 23:17:43,687 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-17 23:17:43,687 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-17 23:17:43,694 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 11:17:43" (1/1) ... [2021-12-17 23:17:43,694 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 11:17:43" (1/1) ... [2021-12-17 23:17:43,697 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 11:17:43" (1/1) ... [2021-12-17 23:17:43,697 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 11:17:43" (1/1) ... [2021-12-17 23:17:43,701 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 11:17:43" (1/1) ... [2021-12-17 23:17:43,703 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 11:17:43" (1/1) ... [2021-12-17 23:17:43,704 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 11:17:43" (1/1) ... [2021-12-17 23:17:43,706 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-17 23:17:43,707 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-17 23:17:43,707 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-17 23:17:43,707 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-17 23:17:43,708 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 11:17:43" (1/1) ... [2021-12-17 23:17:43,713 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-17 23:17:43,723 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-17 23:17:43,736 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) [2021-12-17 23:17:43,743 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 [2021-12-17 23:17:43,768 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-17 23:17:43,768 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-12-17 23:17:43,769 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-12-17 23:17:43,769 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-12-17 23:17:43,769 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-12-17 23:17:43,769 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2021-12-17 23:17:43,769 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2021-12-17 23:17:43,771 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2021-12-17 23:17:43,771 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2021-12-17 23:17:43,771 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-17 23:17:43,771 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-17 23:17:43,772 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-12-17 23:17:43,772 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-12-17 23:17:43,772 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-12-17 23:17:43,772 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-17 23:17:43,772 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-17 23:17:43,772 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-12-17 23:17:43,772 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-17 23:17:43,774 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-12-17 23:17:43,909 INFO L236 CfgBuilder]: Building ICFG [2021-12-17 23:17:43,910 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-17 23:17:44,180 INFO L277 CfgBuilder]: Performing block encoding [2021-12-17 23:17:44,234 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-17 23:17:44,234 INFO L301 CfgBuilder]: Removed 0 assume(true) statements. [2021-12-17 23:17:44,236 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.12 11:17:44 BoogieIcfgContainer [2021-12-17 23:17:44,237 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-17 23:17:44,239 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-17 23:17:44,240 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-17 23:17:44,243 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-17 23:17:44,244 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.12 11:17:43" (1/3) ... [2021-12-17 23:17:44,244 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@237adcaf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.12 11:17:44, skipping insertion in model container [2021-12-17 23:17:44,245 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 11:17:43" (2/3) ... [2021-12-17 23:17:44,245 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@237adcaf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.12 11:17:44, skipping insertion in model container [2021-12-17 23:17:44,245 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.12 11:17:44" (3/3) ... [2021-12-17 23:17:44,247 INFO L111 eAbstractionObserver]: Analyzing ICFG test-easy10.wvr.c [2021-12-17 23:17:44,252 WARN L149 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-12-17 23:17:44,252 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-17 23:17:44,252 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-17 23:17:44,252 INFO L513 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-12-17 23:17:44,295 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:17:44,295 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:17:44,296 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:17:44,296 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:17:44,296 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:17:44,297 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:17:44,297 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:17:44,297 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:17:44,310 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:17:44,311 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:17:44,311 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:17:44,311 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:17:44,312 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:17:44,312 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:17:44,312 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:17:44,313 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:17:44,313 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork3_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:17:44,313 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork3_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:17:44,314 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork3_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:17:44,314 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork3_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:17:44,315 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork3_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:17:44,315 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork3_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:17:44,315 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork3_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:17:44,316 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork3_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:17:44,316 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:17:44,316 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:17:44,317 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:17:44,317 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:17:44,317 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork1_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:17:44,317 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork1_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:17:44,318 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork1_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:17:44,318 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork1_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:17:44,322 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:17:44,322 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:17:44,322 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:17:44,322 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:17:44,323 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork1_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:17:44,323 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:17:44,324 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork1_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:17:44,324 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:17:44,331 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:17:44,332 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:17:44,332 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:17:44,332 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:17:44,334 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork3_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:17:44,335 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork3_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:17:44,335 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork3_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:17:44,335 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork3_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:17:44,339 INFO L148 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2021-12-17 23:17:44,377 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-17 23:17:44,383 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 [2021-12-17 23:17:44,383 INFO L340 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2021-12-17 23:17:44,393 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 149 places, 138 transitions, 308 flow [2021-12-17 23:17:44,445 INFO L129 PetriNetUnfolder]: 2/134 cut-off events. [2021-12-17 23:17:44,445 INFO L130 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2021-12-17 23:17:44,448 INFO L84 FinitePrefix]: Finished finitePrefix Result has 151 conditions, 134 events. 2/134 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 74 event pairs, 0 based on Foata normal form. 0/131 useless extension candidates. Maximal degree in co-relation 95. Up to 2 conditions per place. [2021-12-17 23:17:44,448 INFO L82 GeneralOperation]: Start removeDead. Operand has 149 places, 138 transitions, 308 flow [2021-12-17 23:17:44,452 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 132 places, 121 transitions, 266 flow [2021-12-17 23:17:44,479 INFO L129 PetriNetUnfolder]: 2/120 cut-off events. [2021-12-17 23:17:44,480 INFO L130 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2021-12-17 23:17:44,480 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-17 23:17:44,481 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 23:17:44,481 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-12-17 23:17:44,485 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 23:17:44,486 INFO L85 PathProgramCache]: Analyzing trace with hash -936094455, now seen corresponding path program 1 times [2021-12-17 23:17:44,493 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 23:17:44,493 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [99767414] [2021-12-17 23:17:44,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 23:17:44,494 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 23:17:44,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 23:17:45,002 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 23:17:45,003 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 23:17:45,003 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [99767414] [2021-12-17 23:17:45,004 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [99767414] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 23:17:45,005 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 23:17:45,005 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-17 23:17:45,007 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1320696374] [2021-12-17 23:17:45,009 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 23:17:45,017 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-17 23:17:45,017 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 23:17:45,043 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-17 23:17:45,046 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-17 23:17:45,049 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 121 out of 138 [2021-12-17 23:17:45,055 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 132 places, 121 transitions, 266 flow. Second operand has 3 states, 3 states have (on average 125.66666666666667) internal successors, (377), 3 states have internal predecessors, (377), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 23:17:45,055 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-17 23:17:45,055 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 121 of 138 [2021-12-17 23:17:45,060 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-17 23:17:45,184 INFO L129 PetriNetUnfolder]: 58/329 cut-off events. [2021-12-17 23:17:45,185 INFO L130 PetriNetUnfolder]: For 62/62 co-relation queries the response was YES. [2021-12-17 23:17:45,188 INFO L84 FinitePrefix]: Finished finitePrefix Result has 494 conditions, 329 events. 58/329 cut-off events. For 62/62 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 1238 event pairs, 13 based on Foata normal form. 10/330 useless extension candidates. Maximal degree in co-relation 376. Up to 100 conditions per place. [2021-12-17 23:17:45,191 INFO L132 encePairwiseOnDemand]: 133/138 looper letters, 16 selfloop transitions, 2 changer transitions 2/123 dead transitions. [2021-12-17 23:17:45,191 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 134 places, 123 transitions, 312 flow [2021-12-17 23:17:45,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-17 23:17:45,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-12-17 23:17:45,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 384 transitions. [2021-12-17 23:17:45,207 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.927536231884058 [2021-12-17 23:17:45,207 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 384 transitions. [2021-12-17 23:17:45,208 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 384 transitions. [2021-12-17 23:17:45,210 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-17 23:17:45,212 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 384 transitions. [2021-12-17 23:17:45,215 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 128.0) internal successors, (384), 3 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) [2021-12-17 23:17:45,221 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 138.0) internal successors, (552), 4 states have internal predecessors, (552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 23:17:45,222 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 138.0) internal successors, (552), 4 states have internal predecessors, (552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 23:17:45,223 INFO L186 Difference]: Start difference. First operand has 132 places, 121 transitions, 266 flow. Second operand 3 states and 384 transitions. [2021-12-17 23:17:45,223 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 134 places, 123 transitions, 312 flow [2021-12-17 23:17:45,227 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 126 places, 123 transitions, 292 flow, removed 0 selfloop flow, removed 8 redundant places. [2021-12-17 23:17:45,233 INFO L242 Difference]: Finished difference. Result has 127 places, 117 transitions, 250 flow [2021-12-17 23:17:45,235 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=138, PETRI_DIFFERENCE_MINUEND_FLOW=246, PETRI_DIFFERENCE_MINUEND_PLACES=124, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=119, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=117, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=250, PETRI_PLACES=127, PETRI_TRANSITIONS=117} [2021-12-17 23:17:45,237 INFO L334 CegarLoopForPetriNet]: 132 programPoint places, -5 predicate places. [2021-12-17 23:17:45,237 INFO L470 AbstractCegarLoop]: Abstraction has has 127 places, 117 transitions, 250 flow [2021-12-17 23:17:45,238 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 125.66666666666667) internal successors, (377), 3 states have internal predecessors, (377), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 23:17:45,238 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-17 23:17:45,238 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 23:17:45,238 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-17 23:17:45,239 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-12-17 23:17:45,239 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 23:17:45,239 INFO L85 PathProgramCache]: Analyzing trace with hash 767252375, now seen corresponding path program 2 times [2021-12-17 23:17:45,239 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 23:17:45,239 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [654150809] [2021-12-17 23:17:45,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 23:17:45,240 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 23:17:45,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 23:17:46,875 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 23:17:46,875 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 23:17:46,875 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [654150809] [2021-12-17 23:17:46,875 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [654150809] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 23:17:46,876 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 23:17:46,876 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-12-17 23:17:46,876 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1514371245] [2021-12-17 23:17:46,876 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 23:17:46,877 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-12-17 23:17:46,877 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 23:17:46,878 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-12-17 23:17:46,878 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=191, Unknown=0, NotChecked=0, Total=240 [2021-12-17 23:17:46,880 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 85 out of 138 [2021-12-17 23:17:46,882 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 127 places, 117 transitions, 250 flow. Second operand has 16 states, 16 states have (on average 88.0) internal successors, (1408), 16 states have internal predecessors, (1408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 23:17:46,882 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-17 23:17:46,882 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 85 of 138 [2021-12-17 23:17:46,882 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-17 23:17:50,239 INFO L129 PetriNetUnfolder]: 7174/14147 cut-off events. [2021-12-17 23:17:50,240 INFO L130 PetriNetUnfolder]: For 1060/1060 co-relation queries the response was YES. [2021-12-17 23:17:50,276 INFO L84 FinitePrefix]: Finished finitePrefix Result has 25835 conditions, 14147 events. 7174/14147 cut-off events. For 1060/1060 co-relation queries the response was YES. Maximal size of possible extension queue 613. Compared 124289 event pairs, 973 based on Foata normal form. 1/14098 useless extension candidates. Maximal degree in co-relation 18193. Up to 3730 conditions per place. [2021-12-17 23:17:50,361 INFO L132 encePairwiseOnDemand]: 120/138 looper letters, 202 selfloop transitions, 16 changer transitions 13/300 dead transitions. [2021-12-17 23:17:50,361 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 140 places, 300 transitions, 1129 flow [2021-12-17 23:17:50,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-12-17 23:17:50,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2021-12-17 23:17:50,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 1592 transitions. [2021-12-17 23:17:50,367 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7210144927536232 [2021-12-17 23:17:50,368 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 1592 transitions. [2021-12-17 23:17:50,368 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 1592 transitions. [2021-12-17 23:17:50,369 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-17 23:17:50,369 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 1592 transitions. [2021-12-17 23:17:50,373 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 99.5) internal successors, (1592), 16 states have internal predecessors, (1592), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 23:17:50,379 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 138.0) internal successors, (2346), 17 states have internal predecessors, (2346), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 23:17:50,380 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 138.0) internal successors, (2346), 17 states have internal predecessors, (2346), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 23:17:50,381 INFO L186 Difference]: Start difference. First operand has 127 places, 117 transitions, 250 flow. Second operand 16 states and 1592 transitions. [2021-12-17 23:17:50,381 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 140 places, 300 transitions, 1129 flow [2021-12-17 23:17:50,392 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 138 places, 300 transitions, 1125 flow, removed 0 selfloop flow, removed 2 redundant places. [2021-12-17 23:17:50,396 INFO L242 Difference]: Finished difference. Result has 152 places, 130 transitions, 369 flow [2021-12-17 23:17:50,396 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=138, PETRI_DIFFERENCE_MINUEND_FLOW=246, PETRI_DIFFERENCE_MINUEND_PLACES=123, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=117, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=103, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=369, PETRI_PLACES=152, PETRI_TRANSITIONS=130} [2021-12-17 23:17:50,397 INFO L334 CegarLoopForPetriNet]: 132 programPoint places, 20 predicate places. [2021-12-17 23:17:50,397 INFO L470 AbstractCegarLoop]: Abstraction has has 152 places, 130 transitions, 369 flow [2021-12-17 23:17:50,399 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 88.0) internal successors, (1408), 16 states have internal predecessors, (1408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 23:17:50,399 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-17 23:17:50,399 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 23:17:50,399 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-17 23:17:50,400 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-12-17 23:17:50,400 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 23:17:50,401 INFO L85 PathProgramCache]: Analyzing trace with hash 924146363, now seen corresponding path program 3 times [2021-12-17 23:17:50,401 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 23:17:50,401 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [215447794] [2021-12-17 23:17:50,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 23:17:50,401 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 23:17:50,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 23:17:50,572 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 23:17:50,573 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 23:17:50,573 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [215447794] [2021-12-17 23:17:50,573 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [215447794] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 23:17:50,573 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 23:17:50,574 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-17 23:17:50,574 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1756324885] [2021-12-17 23:17:50,574 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 23:17:50,575 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-17 23:17:50,575 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 23:17:50,575 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-17 23:17:50,576 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-17 23:17:50,576 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 121 out of 138 [2021-12-17 23:17:50,577 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 152 places, 130 transitions, 369 flow. Second operand has 3 states, 3 states have (on average 125.66666666666667) internal successors, (377), 3 states have internal predecessors, (377), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 23:17:50,577 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-17 23:17:50,577 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 121 of 138 [2021-12-17 23:17:50,578 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-17 23:17:50,801 INFO L129 PetriNetUnfolder]: 354/1739 cut-off events. [2021-12-17 23:17:50,801 INFO L130 PetriNetUnfolder]: For 503/515 co-relation queries the response was YES. [2021-12-17 23:17:50,812 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3233 conditions, 1739 events. 354/1739 cut-off events. For 503/515 co-relation queries the response was YES. Maximal size of possible extension queue 126. Compared 15146 event pairs, 171 based on Foata normal form. 38/1670 useless extension candidates. Maximal degree in co-relation 3187. Up to 496 conditions per place. [2021-12-17 23:17:50,819 INFO L132 encePairwiseOnDemand]: 135/138 looper letters, 16 selfloop transitions, 2 changer transitions 0/134 dead transitions. [2021-12-17 23:17:50,820 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 150 places, 134 transitions, 417 flow [2021-12-17 23:17:50,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-17 23:17:50,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-12-17 23:17:50,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 382 transitions. [2021-12-17 23:17:50,821 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.9227053140096618 [2021-12-17 23:17:50,822 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 382 transitions. [2021-12-17 23:17:50,822 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 382 transitions. [2021-12-17 23:17:50,822 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-17 23:17:50,822 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 382 transitions. [2021-12-17 23:17:50,823 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 127.33333333333333) internal successors, (382), 3 states have internal predecessors, (382), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 23:17:50,824 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 138.0) internal successors, (552), 4 states have internal predecessors, (552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 23:17:50,825 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 138.0) internal successors, (552), 4 states have internal predecessors, (552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 23:17:50,825 INFO L186 Difference]: Start difference. First operand has 152 places, 130 transitions, 369 flow. Second operand 3 states and 382 transitions. [2021-12-17 23:17:50,825 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 150 places, 134 transitions, 417 flow [2021-12-17 23:17:50,833 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 145 places, 134 transitions, 406 flow, removed 4 selfloop flow, removed 5 redundant places. [2021-12-17 23:17:50,836 INFO L242 Difference]: Finished difference. Result has 146 places, 130 transitions, 366 flow [2021-12-17 23:17:50,836 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=138, PETRI_DIFFERENCE_MINUEND_FLOW=358, PETRI_DIFFERENCE_MINUEND_PLACES=143, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=130, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=128, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=366, PETRI_PLACES=146, PETRI_TRANSITIONS=130} [2021-12-17 23:17:50,837 INFO L334 CegarLoopForPetriNet]: 132 programPoint places, 14 predicate places. [2021-12-17 23:17:50,837 INFO L470 AbstractCegarLoop]: Abstraction has has 146 places, 130 transitions, 366 flow [2021-12-17 23:17:50,837 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 125.66666666666667) internal successors, (377), 3 states have internal predecessors, (377), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 23:17:50,838 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-17 23:17:50,838 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 23:17:50,838 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-17 23:17:50,838 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-12-17 23:17:50,839 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 23:17:50,839 INFO L85 PathProgramCache]: Analyzing trace with hash 764863945, now seen corresponding path program 4 times [2021-12-17 23:17:50,839 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 23:17:50,839 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [877051786] [2021-12-17 23:17:50,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 23:17:50,840 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 23:17:50,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 23:17:50,990 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 23:17:50,991 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 23:17:50,991 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [877051786] [2021-12-17 23:17:50,991 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [877051786] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 23:17:50,991 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 23:17:50,991 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-17 23:17:50,992 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1355166123] [2021-12-17 23:17:50,992 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 23:17:50,992 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-17 23:17:50,993 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 23:17:50,994 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-17 23:17:50,994 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-17 23:17:50,996 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 121 out of 138 [2021-12-17 23:17:50,997 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 146 places, 130 transitions, 366 flow. Second operand has 3 states, 3 states have (on average 125.66666666666667) internal successors, (377), 3 states have internal predecessors, (377), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 23:17:50,997 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-17 23:17:50,997 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 121 of 138 [2021-12-17 23:17:50,997 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-17 23:17:51,226 INFO L129 PetriNetUnfolder]: 257/1474 cut-off events. [2021-12-17 23:17:51,227 INFO L130 PetriNetUnfolder]: For 376/392 co-relation queries the response was YES. [2021-12-17 23:17:51,236 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2640 conditions, 1474 events. 257/1474 cut-off events. For 376/392 co-relation queries the response was YES. Maximal size of possible extension queue 90. Compared 12064 event pairs, 173 based on Foata normal form. 20/1404 useless extension candidates. Maximal degree in co-relation 2439. Up to 440 conditions per place. [2021-12-17 23:17:51,241 INFO L132 encePairwiseOnDemand]: 135/138 looper letters, 17 selfloop transitions, 2 changer transitions 0/134 dead transitions. [2021-12-17 23:17:51,242 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 148 places, 134 transitions, 413 flow [2021-12-17 23:17:51,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-17 23:17:51,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-12-17 23:17:51,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 383 transitions. [2021-12-17 23:17:51,243 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.9251207729468599 [2021-12-17 23:17:51,243 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 383 transitions. [2021-12-17 23:17:51,244 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 383 transitions. [2021-12-17 23:17:51,244 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-17 23:17:51,244 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 383 transitions. [2021-12-17 23:17:51,245 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 127.66666666666667) internal successors, (383), 3 states have internal predecessors, (383), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 23:17:51,246 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 138.0) internal successors, (552), 4 states have internal predecessors, (552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 23:17:51,246 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 138.0) internal successors, (552), 4 states have internal predecessors, (552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 23:17:51,246 INFO L186 Difference]: Start difference. First operand has 146 places, 130 transitions, 366 flow. Second operand 3 states and 383 transitions. [2021-12-17 23:17:51,247 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 148 places, 134 transitions, 413 flow [2021-12-17 23:17:51,251 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 146 places, 134 transitions, 407 flow, removed 1 selfloop flow, removed 2 redundant places. [2021-12-17 23:17:51,253 INFO L242 Difference]: Finished difference. Result has 147 places, 129 transitions, 362 flow [2021-12-17 23:17:51,254 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=138, PETRI_DIFFERENCE_MINUEND_FLOW=354, PETRI_DIFFERENCE_MINUEND_PLACES=144, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=129, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=127, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=362, PETRI_PLACES=147, PETRI_TRANSITIONS=129} [2021-12-17 23:17:51,254 INFO L334 CegarLoopForPetriNet]: 132 programPoint places, 15 predicate places. [2021-12-17 23:17:51,255 INFO L470 AbstractCegarLoop]: Abstraction has has 147 places, 129 transitions, 362 flow [2021-12-17 23:17:51,255 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 125.66666666666667) internal successors, (377), 3 states have internal predecessors, (377), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 23:17:51,255 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-17 23:17:51,255 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 23:17:51,256 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-17 23:17:51,256 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-12-17 23:17:51,256 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 23:17:51,256 INFO L85 PathProgramCache]: Analyzing trace with hash -336564779, now seen corresponding path program 5 times [2021-12-17 23:17:51,257 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 23:17:51,257 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1817507522] [2021-12-17 23:17:51,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 23:17:51,257 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 23:17:51,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 23:17:51,325 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 23:17:51,326 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 23:17:51,326 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1817507522] [2021-12-17 23:17:51,326 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1817507522] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 23:17:51,326 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 23:17:51,326 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-17 23:17:51,326 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1355688618] [2021-12-17 23:17:51,327 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 23:17:51,327 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-17 23:17:51,327 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 23:17:51,328 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-17 23:17:51,328 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-17 23:17:51,328 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 121 out of 138 [2021-12-17 23:17:51,329 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 147 places, 129 transitions, 362 flow. Second operand has 3 states, 3 states have (on average 125.66666666666667) internal successors, (377), 3 states have internal predecessors, (377), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 23:17:51,329 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-17 23:17:51,329 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 121 of 138 [2021-12-17 23:17:51,329 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-17 23:17:51,526 INFO L129 PetriNetUnfolder]: 284/1390 cut-off events. [2021-12-17 23:17:51,526 INFO L130 PetriNetUnfolder]: For 436/452 co-relation queries the response was YES. [2021-12-17 23:17:51,532 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2649 conditions, 1390 events. 284/1390 cut-off events. For 436/452 co-relation queries the response was YES. Maximal size of possible extension queue 110. Compared 11105 event pairs, 77 based on Foata normal form. 30/1364 useless extension candidates. Maximal degree in co-relation 2367. Up to 436 conditions per place. [2021-12-17 23:17:51,537 INFO L132 encePairwiseOnDemand]: 135/138 looper letters, 17 selfloop transitions, 2 changer transitions 0/134 dead transitions. [2021-12-17 23:17:51,537 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 149 places, 134 transitions, 417 flow [2021-12-17 23:17:51,537 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-17 23:17:51,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-12-17 23:17:51,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 383 transitions. [2021-12-17 23:17:51,539 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.9251207729468599 [2021-12-17 23:17:51,539 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 383 transitions. [2021-12-17 23:17:51,539 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 383 transitions. [2021-12-17 23:17:51,539 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-17 23:17:51,539 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 383 transitions. [2021-12-17 23:17:51,540 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 127.66666666666667) internal successors, (383), 3 states have internal predecessors, (383), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 23:17:51,541 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 138.0) internal successors, (552), 4 states have internal predecessors, (552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 23:17:51,542 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 138.0) internal successors, (552), 4 states have internal predecessors, (552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 23:17:51,542 INFO L186 Difference]: Start difference. First operand has 147 places, 129 transitions, 362 flow. Second operand 3 states and 383 transitions. [2021-12-17 23:17:51,542 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 149 places, 134 transitions, 417 flow [2021-12-17 23:17:51,545 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 147 places, 134 transitions, 413 flow, removed 0 selfloop flow, removed 2 redundant places. [2021-12-17 23:17:51,547 INFO L242 Difference]: Finished difference. Result has 148 places, 129 transitions, 366 flow [2021-12-17 23:17:51,548 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=138, PETRI_DIFFERENCE_MINUEND_FLOW=358, PETRI_DIFFERENCE_MINUEND_PLACES=145, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=129, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=127, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=366, PETRI_PLACES=148, PETRI_TRANSITIONS=129} [2021-12-17 23:17:51,548 INFO L334 CegarLoopForPetriNet]: 132 programPoint places, 16 predicate places. [2021-12-17 23:17:51,548 INFO L470 AbstractCegarLoop]: Abstraction has has 148 places, 129 transitions, 366 flow [2021-12-17 23:17:51,549 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 125.66666666666667) internal successors, (377), 3 states have internal predecessors, (377), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 23:17:51,549 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-17 23:17:51,549 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 23:17:51,549 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-12-17 23:17:51,549 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-12-17 23:17:51,550 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 23:17:51,550 INFO L85 PathProgramCache]: Analyzing trace with hash 548602791, now seen corresponding path program 6 times [2021-12-17 23:17:51,550 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 23:17:51,550 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1617627174] [2021-12-17 23:17:51,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 23:17:51,551 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 23:17:51,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 23:17:52,434 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 23:17:52,434 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 23:17:52,434 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1617627174] [2021-12-17 23:17:52,434 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1617627174] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 23:17:52,434 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 23:17:52,435 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-12-17 23:17:52,435 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1130306725] [2021-12-17 23:17:52,435 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 23:17:52,435 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-12-17 23:17:52,435 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 23:17:52,436 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-12-17 23:17:52,436 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=191, Unknown=0, NotChecked=0, Total=240 [2021-12-17 23:17:52,437 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 85 out of 138 [2021-12-17 23:17:52,438 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 148 places, 129 transitions, 366 flow. Second operand has 16 states, 16 states have (on average 88.0) internal successors, (1408), 16 states have internal predecessors, (1408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 23:17:52,438 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-17 23:17:52,438 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 85 of 138 [2021-12-17 23:17:52,438 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-17 23:17:55,684 INFO L129 PetriNetUnfolder]: 6440/14601 cut-off events. [2021-12-17 23:17:55,685 INFO L130 PetriNetUnfolder]: For 11146/11146 co-relation queries the response was YES. [2021-12-17 23:17:55,734 INFO L84 FinitePrefix]: Finished finitePrefix Result has 35898 conditions, 14601 events. 6440/14601 cut-off events. For 11146/11146 co-relation queries the response was YES. Maximal size of possible extension queue 836. Compared 139408 event pairs, 2048 based on Foata normal form. 1/14513 useless extension candidates. Maximal degree in co-relation 28315. Up to 3104 conditions per place. [2021-12-17 23:17:55,797 INFO L132 encePairwiseOnDemand]: 121/138 looper letters, 204 selfloop transitions, 28 changer transitions 13/314 dead transitions. [2021-12-17 23:17:55,797 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 163 places, 314 transitions, 1609 flow [2021-12-17 23:17:55,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-12-17 23:17:55,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2021-12-17 23:17:55,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 1560 transitions. [2021-12-17 23:17:55,801 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7065217391304348 [2021-12-17 23:17:55,802 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 1560 transitions. [2021-12-17 23:17:55,802 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 1560 transitions. [2021-12-17 23:17:55,803 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-17 23:17:55,803 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 1560 transitions. [2021-12-17 23:17:55,806 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 97.5) internal successors, (1560), 16 states have internal predecessors, (1560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 23:17:55,810 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 138.0) internal successors, (2346), 17 states have internal predecessors, (2346), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 23:17:55,811 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 138.0) internal successors, (2346), 17 states have internal predecessors, (2346), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 23:17:55,811 INFO L186 Difference]: Start difference. First operand has 148 places, 129 transitions, 366 flow. Second operand 16 states and 1560 transitions. [2021-12-17 23:17:55,811 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 163 places, 314 transitions, 1609 flow [2021-12-17 23:17:55,882 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 161 places, 314 transitions, 1605 flow, removed 0 selfloop flow, removed 2 redundant places. [2021-12-17 23:17:55,885 INFO L242 Difference]: Finished difference. Result has 175 places, 153 transitions, 654 flow [2021-12-17 23:17:55,885 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=138, PETRI_DIFFERENCE_MINUEND_FLOW=362, PETRI_DIFFERENCE_MINUEND_PLACES=146, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=129, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=106, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=654, PETRI_PLACES=175, PETRI_TRANSITIONS=153} [2021-12-17 23:17:55,886 INFO L334 CegarLoopForPetriNet]: 132 programPoint places, 43 predicate places. [2021-12-17 23:17:55,886 INFO L470 AbstractCegarLoop]: Abstraction has has 175 places, 153 transitions, 654 flow [2021-12-17 23:17:55,887 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 88.0) internal successors, (1408), 16 states have internal predecessors, (1408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 23:17:55,887 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-17 23:17:55,887 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 23:17:55,887 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-12-17 23:17:55,888 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-12-17 23:17:55,888 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 23:17:55,888 INFO L85 PathProgramCache]: Analyzing trace with hash -1808688941, now seen corresponding path program 7 times [2021-12-17 23:17:55,888 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 23:17:55,888 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1795404776] [2021-12-17 23:17:55,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 23:17:55,889 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 23:17:55,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 23:17:56,939 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 23:17:56,940 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 23:17:56,940 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1795404776] [2021-12-17 23:17:56,940 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1795404776] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 23:17:56,940 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 23:17:56,940 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-12-17 23:17:56,940 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [430273797] [2021-12-17 23:17:56,940 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 23:17:56,941 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-12-17 23:17:56,941 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 23:17:56,941 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-12-17 23:17:56,942 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=194, Unknown=0, NotChecked=0, Total=240 [2021-12-17 23:17:56,943 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 85 out of 138 [2021-12-17 23:17:56,945 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 175 places, 153 transitions, 654 flow. Second operand has 16 states, 16 states have (on average 88.0) internal successors, (1408), 16 states have internal predecessors, (1408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 23:17:56,945 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-17 23:17:56,945 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 85 of 138 [2021-12-17 23:17:56,945 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-17 23:18:01,945 INFO L129 PetriNetUnfolder]: 11557/29300 cut-off events. [2021-12-17 23:18:01,946 INFO L130 PetriNetUnfolder]: For 54632/54648 co-relation queries the response was YES. [2021-12-17 23:18:02,149 INFO L84 FinitePrefix]: Finished finitePrefix Result has 83475 conditions, 29300 events. 11557/29300 cut-off events. For 54632/54648 co-relation queries the response was YES. Maximal size of possible extension queue 1766. Compared 341061 event pairs, 3786 based on Foata normal form. 5/28988 useless extension candidates. Maximal degree in co-relation 82889. Up to 7681 conditions per place. [2021-12-17 23:18:02,287 INFO L132 encePairwiseOnDemand]: 119/138 looper letters, 303 selfloop transitions, 41 changer transitions 9/422 dead transitions. [2021-12-17 23:18:02,287 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 186 places, 422 transitions, 2938 flow [2021-12-17 23:18:02,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-12-17 23:18:02,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2021-12-17 23:18:02,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 1598 transitions. [2021-12-17 23:18:02,292 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7237318840579711 [2021-12-17 23:18:02,292 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 1598 transitions. [2021-12-17 23:18:02,292 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 1598 transitions. [2021-12-17 23:18:02,293 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-17 23:18:02,293 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 1598 transitions. [2021-12-17 23:18:02,298 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 99.875) internal successors, (1598), 16 states have internal predecessors, (1598), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 23:18:02,302 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 138.0) internal successors, (2346), 17 states have internal predecessors, (2346), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 23:18:02,304 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 138.0) internal successors, (2346), 17 states have internal predecessors, (2346), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 23:18:02,304 INFO L186 Difference]: Start difference. First operand has 175 places, 153 transitions, 654 flow. Second operand 16 states and 1598 transitions. [2021-12-17 23:18:02,304 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 186 places, 422 transitions, 2938 flow [2021-12-17 23:18:02,901 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 181 places, 422 transitions, 2829 flow, removed 47 selfloop flow, removed 5 redundant places. [2021-12-17 23:18:02,906 INFO L242 Difference]: Finished difference. Result has 195 places, 186 transitions, 1138 flow [2021-12-17 23:18:02,907 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=138, PETRI_DIFFERENCE_MINUEND_FLOW=638, PETRI_DIFFERENCE_MINUEND_PLACES=166, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=153, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=115, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=1138, PETRI_PLACES=195, PETRI_TRANSITIONS=186} [2021-12-17 23:18:02,908 INFO L334 CegarLoopForPetriNet]: 132 programPoint places, 63 predicate places. [2021-12-17 23:18:02,908 INFO L470 AbstractCegarLoop]: Abstraction has has 195 places, 186 transitions, 1138 flow [2021-12-17 23:18:02,909 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 88.0) internal successors, (1408), 16 states have internal predecessors, (1408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 23:18:02,909 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-17 23:18:02,909 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 23:18:02,909 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-12-17 23:18:02,910 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-12-17 23:18:02,910 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 23:18:02,910 INFO L85 PathProgramCache]: Analyzing trace with hash 580101597, now seen corresponding path program 8 times [2021-12-17 23:18:02,911 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 23:18:02,911 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [659091245] [2021-12-17 23:18:02,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 23:18:02,911 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 23:18:02,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 23:18:03,877 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 23:18:03,878 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 23:18:03,878 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [659091245] [2021-12-17 23:18:03,878 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [659091245] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 23:18:03,878 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 23:18:03,878 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-12-17 23:18:03,878 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [468093184] [2021-12-17 23:18:03,878 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 23:18:03,879 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-12-17 23:18:03,879 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 23:18:03,879 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-12-17 23:18:03,879 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=194, Unknown=0, NotChecked=0, Total=240 [2021-12-17 23:18:03,881 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 85 out of 138 [2021-12-17 23:18:03,882 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 195 places, 186 transitions, 1138 flow. Second operand has 16 states, 16 states have (on average 88.0) internal successors, (1408), 16 states have internal predecessors, (1408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 23:18:03,882 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-17 23:18:03,882 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 85 of 138 [2021-12-17 23:18:03,882 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-17 23:18:10,209 INFO L129 PetriNetUnfolder]: 13774/37497 cut-off events. [2021-12-17 23:18:10,210 INFO L130 PetriNetUnfolder]: For 128797/128797 co-relation queries the response was YES. [2021-12-17 23:18:10,430 INFO L84 FinitePrefix]: Finished finitePrefix Result has 120850 conditions, 37497 events. 13774/37497 cut-off events. For 128797/128797 co-relation queries the response was YES. Maximal size of possible extension queue 2352. Compared 473196 event pairs, 4993 based on Foata normal form. 1/37118 useless extension candidates. Maximal degree in co-relation 119814. Up to 7195 conditions per place. [2021-12-17 23:18:10,593 INFO L132 encePairwiseOnDemand]: 120/138 looper letters, 298 selfloop transitions, 65 changer transitions 9/441 dead transitions. [2021-12-17 23:18:10,593 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 207 places, 441 transitions, 3680 flow [2021-12-17 23:18:10,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-12-17 23:18:10,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2021-12-17 23:18:10,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 1597 transitions. [2021-12-17 23:18:10,598 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7232789855072463 [2021-12-17 23:18:10,598 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 1597 transitions. [2021-12-17 23:18:10,598 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 1597 transitions. [2021-12-17 23:18:10,599 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-17 23:18:10,599 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 1597 transitions. [2021-12-17 23:18:10,602 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 99.8125) internal successors, (1597), 16 states have internal predecessors, (1597), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 23:18:10,606 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 138.0) internal successors, (2346), 17 states have internal predecessors, (2346), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 23:18:10,607 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 138.0) internal successors, (2346), 17 states have internal predecessors, (2346), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 23:18:10,607 INFO L186 Difference]: Start difference. First operand has 195 places, 186 transitions, 1138 flow. Second operand 16 states and 1597 transitions. [2021-12-17 23:18:10,607 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 207 places, 441 transitions, 3680 flow [2021-12-17 23:18:11,662 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 202 places, 441 transitions, 3566 flow, removed 52 selfloop flow, removed 5 redundant places. [2021-12-17 23:18:11,668 INFO L242 Difference]: Finished difference. Result has 216 places, 225 transitions, 1857 flow [2021-12-17 23:18:11,668 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=138, PETRI_DIFFERENCE_MINUEND_FLOW=1093, PETRI_DIFFERENCE_MINUEND_PLACES=187, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=186, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=132, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=1857, PETRI_PLACES=216, PETRI_TRANSITIONS=225} [2021-12-17 23:18:11,669 INFO L334 CegarLoopForPetriNet]: 132 programPoint places, 84 predicate places. [2021-12-17 23:18:11,669 INFO L470 AbstractCegarLoop]: Abstraction has has 216 places, 225 transitions, 1857 flow [2021-12-17 23:18:11,670 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 88.0) internal successors, (1408), 16 states have internal predecessors, (1408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 23:18:11,670 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-17 23:18:11,670 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 23:18:11,671 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-12-17 23:18:11,671 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-12-17 23:18:11,671 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 23:18:11,671 INFO L85 PathProgramCache]: Analyzing trace with hash -782744757, now seen corresponding path program 9 times [2021-12-17 23:18:11,672 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 23:18:11,672 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [193981781] [2021-12-17 23:18:11,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 23:18:11,672 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 23:18:11,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 23:18:12,538 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 23:18:12,538 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 23:18:12,538 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [193981781] [2021-12-17 23:18:12,539 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [193981781] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 23:18:12,539 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 23:18:12,539 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-12-17 23:18:12,539 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [668694246] [2021-12-17 23:18:12,539 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 23:18:12,539 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-12-17 23:18:12,540 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 23:18:12,540 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-12-17 23:18:12,540 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=195, Unknown=0, NotChecked=0, Total=240 [2021-12-17 23:18:12,541 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 85 out of 138 [2021-12-17 23:18:12,543 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 216 places, 225 transitions, 1857 flow. Second operand has 16 states, 16 states have (on average 88.0) internal successors, (1408), 16 states have internal predecessors, (1408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 23:18:12,543 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-17 23:18:12,543 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 85 of 138 [2021-12-17 23:18:12,543 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-17 23:18:21,180 INFO L129 PetriNetUnfolder]: 19053/53670 cut-off events. [2021-12-17 23:18:21,180 INFO L130 PetriNetUnfolder]: For 286765/286765 co-relation queries the response was YES. [2021-12-17 23:18:21,650 INFO L84 FinitePrefix]: Finished finitePrefix Result has 191134 conditions, 53670 events. 19053/53670 cut-off events. For 286765/286765 co-relation queries the response was YES. Maximal size of possible extension queue 3481. Compared 730628 event pairs, 5379 based on Foata normal form. 1/52787 useless extension candidates. Maximal degree in co-relation 189668. Up to 11993 conditions per place. [2021-12-17 23:18:21,877 INFO L132 encePairwiseOnDemand]: 120/138 looper letters, 350 selfloop transitions, 86 changer transitions 8/513 dead transitions. [2021-12-17 23:18:21,878 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 228 places, 513 transitions, 5243 flow [2021-12-17 23:18:21,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-12-17 23:18:21,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2021-12-17 23:18:21,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 1597 transitions. [2021-12-17 23:18:21,883 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7232789855072463 [2021-12-17 23:18:21,883 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 1597 transitions. [2021-12-17 23:18:21,883 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 1597 transitions. [2021-12-17 23:18:21,884 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-17 23:18:21,884 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 1597 transitions. [2021-12-17 23:18:21,888 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 99.8125) internal successors, (1597), 16 states have internal predecessors, (1597), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 23:18:21,892 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 138.0) internal successors, (2346), 17 states have internal predecessors, (2346), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 23:18:21,893 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 138.0) internal successors, (2346), 17 states have internal predecessors, (2346), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 23:18:21,893 INFO L186 Difference]: Start difference. First operand has 216 places, 225 transitions, 1857 flow. Second operand 16 states and 1597 transitions. [2021-12-17 23:18:21,893 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 228 places, 513 transitions, 5243 flow [2021-12-17 23:18:24,249 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 223 places, 513 transitions, 5044 flow, removed 89 selfloop flow, removed 5 redundant places. [2021-12-17 23:18:24,255 INFO L242 Difference]: Finished difference. Result has 237 places, 270 transitions, 2818 flow [2021-12-17 23:18:24,255 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=138, PETRI_DIFFERENCE_MINUEND_FLOW=1762, PETRI_DIFFERENCE_MINUEND_PLACES=208, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=225, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=145, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=2818, PETRI_PLACES=237, PETRI_TRANSITIONS=270} [2021-12-17 23:18:24,255 INFO L334 CegarLoopForPetriNet]: 132 programPoint places, 105 predicate places. [2021-12-17 23:18:24,256 INFO L470 AbstractCegarLoop]: Abstraction has has 237 places, 270 transitions, 2818 flow [2021-12-17 23:18:24,256 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 88.0) internal successors, (1408), 16 states have internal predecessors, (1408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 23:18:24,256 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-17 23:18:24,256 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 23:18:24,256 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-12-17 23:18:24,257 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-12-17 23:18:24,257 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 23:18:24,257 INFO L85 PathProgramCache]: Analyzing trace with hash -716411085, now seen corresponding path program 10 times [2021-12-17 23:18:24,257 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 23:18:24,257 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1906661978] [2021-12-17 23:18:24,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 23:18:24,257 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 23:18:24,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 23:18:25,112 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 23:18:25,113 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 23:18:25,113 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1906661978] [2021-12-17 23:18:25,113 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1906661978] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 23:18:25,113 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 23:18:25,113 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-12-17 23:18:25,113 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1312185151] [2021-12-17 23:18:25,113 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 23:18:25,114 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-12-17 23:18:25,115 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 23:18:25,115 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-12-17 23:18:25,115 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=196, Unknown=0, NotChecked=0, Total=240 [2021-12-17 23:18:25,117 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 85 out of 138 [2021-12-17 23:18:25,118 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 237 places, 270 transitions, 2818 flow. Second operand has 16 states, 16 states have (on average 88.0) internal successors, (1408), 16 states have internal predecessors, (1408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 23:18:25,118 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-17 23:18:25,118 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 85 of 138 [2021-12-17 23:18:25,119 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-17 23:18:36,471 INFO L129 PetriNetUnfolder]: 23341/67095 cut-off events. [2021-12-17 23:18:36,471 INFO L130 PetriNetUnfolder]: For 501736/501736 co-relation queries the response was YES. [2021-12-17 23:18:37,356 INFO L84 FinitePrefix]: Finished finitePrefix Result has 259900 conditions, 67095 events. 23341/67095 cut-off events. For 501736/501736 co-relation queries the response was YES. Maximal size of possible extension queue 4685. Compared 959670 event pairs, 7468 based on Foata normal form. 1/66203 useless extension candidates. Maximal degree in co-relation 258109. Up to 14361 conditions per place. [2021-12-17 23:18:37,588 INFO L132 encePairwiseOnDemand]: 121/138 looper letters, 383 selfloop transitions, 93 changer transitions 8/553 dead transitions. [2021-12-17 23:18:37,589 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 249 places, 553 transitions, 6585 flow [2021-12-17 23:18:37,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-12-17 23:18:37,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2021-12-17 23:18:37,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 1596 transitions. [2021-12-17 23:18:37,593 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7228260869565217 [2021-12-17 23:18:37,593 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 1596 transitions. [2021-12-17 23:18:37,593 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 1596 transitions. [2021-12-17 23:18:37,594 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-17 23:18:37,594 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 1596 transitions. [2021-12-17 23:18:37,597 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 99.75) internal successors, (1596), 16 states have internal predecessors, (1596), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 23:18:37,601 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 138.0) internal successors, (2346), 17 states have internal predecessors, (2346), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 23:18:37,601 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 138.0) internal successors, (2346), 17 states have internal predecessors, (2346), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 23:18:37,602 INFO L186 Difference]: Start difference. First operand has 237 places, 270 transitions, 2818 flow. Second operand 16 states and 1596 transitions. [2021-12-17 23:18:37,602 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 249 places, 553 transitions, 6585 flow [2021-12-17 23:18:41,823 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 245 places, 553 transitions, 6422 flow, removed 77 selfloop flow, removed 4 redundant places. [2021-12-17 23:18:41,829 INFO L242 Difference]: Finished difference. Result has 258 places, 310 transitions, 3782 flow [2021-12-17 23:18:41,830 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=138, PETRI_DIFFERENCE_MINUEND_FLOW=2724, PETRI_DIFFERENCE_MINUEND_PLACES=230, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=270, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=59, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=184, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=3782, PETRI_PLACES=258, PETRI_TRANSITIONS=310} [2021-12-17 23:18:41,831 INFO L334 CegarLoopForPetriNet]: 132 programPoint places, 126 predicate places. [2021-12-17 23:18:41,831 INFO L470 AbstractCegarLoop]: Abstraction has has 258 places, 310 transitions, 3782 flow [2021-12-17 23:18:41,832 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 88.0) internal successors, (1408), 16 states have internal predecessors, (1408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 23:18:41,832 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-17 23:18:41,832 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 23:18:41,832 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-12-17 23:18:41,833 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-12-17 23:18:41,833 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 23:18:41,833 INFO L85 PathProgramCache]: Analyzing trace with hash 1253535527, now seen corresponding path program 11 times [2021-12-17 23:18:41,833 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 23:18:41,833 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1950958627] [2021-12-17 23:18:41,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 23:18:41,834 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 23:18:41,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 23:18:42,705 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 23:18:42,706 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 23:18:42,706 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1950958627] [2021-12-17 23:18:42,706 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1950958627] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 23:18:42,706 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 23:18:42,706 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-12-17 23:18:42,706 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1474198059] [2021-12-17 23:18:42,706 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 23:18:42,707 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-12-17 23:18:42,707 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 23:18:42,707 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-12-17 23:18:42,708 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=198, Unknown=0, NotChecked=0, Total=240 [2021-12-17 23:18:42,709 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 85 out of 138 [2021-12-17 23:18:42,710 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 258 places, 310 transitions, 3782 flow. Second operand has 16 states, 16 states have (on average 88.0) internal successors, (1408), 16 states have internal predecessors, (1408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 23:18:42,710 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-17 23:18:42,710 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 85 of 138 [2021-12-17 23:18:42,711 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand