./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/weaver/popl20-more-max-array.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version ff03de63 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/weaver/popl20-more-max-array.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 a87860dbf851812846995aa918799e2b576306268e8c461660702f868d3b2804 --- Real Ultimate output --- This is Ultimate 0.2.2-dev-ff03de6 [2021-12-21 15:21:50,775 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-21 15:21:50,777 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-21 15:21:50,806 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-21 15:21:50,807 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-21 15:21:50,808 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-21 15:21:50,809 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-21 15:21:50,811 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-21 15:21:50,824 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-21 15:21:50,824 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-21 15:21:50,825 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-21 15:21:50,826 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-21 15:21:50,826 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-21 15:21:50,827 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-21 15:21:50,827 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-21 15:21:50,828 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-21 15:21:50,829 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-21 15:21:50,829 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-21 15:21:50,830 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-21 15:21:50,836 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-21 15:21:50,839 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-21 15:21:50,846 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-21 15:21:50,846 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-21 15:21:50,847 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-21 15:21:50,848 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-21 15:21:50,852 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-21 15:21:50,852 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-21 15:21:50,853 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-21 15:21:50,853 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-21 15:21:50,853 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-21 15:21:50,854 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-21 15:21:50,854 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-21 15:21:50,855 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-21 15:21:50,855 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-21 15:21:50,856 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-21 15:21:50,857 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-21 15:21:50,858 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-21 15:21:50,858 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-21 15:21:50,859 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-21 15:21:50,859 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-21 15:21:50,860 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-21 15:21:50,861 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-21 15:21:50,878 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-21 15:21:50,878 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-21 15:21:50,879 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-21 15:21:50,879 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-21 15:21:50,879 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-21 15:21:50,880 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-21 15:21:50,880 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-21 15:21:50,880 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-21 15:21:50,880 INFO L138 SettingsManager]: * Use SBE=true [2021-12-21 15:21:50,880 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-21 15:21:50,881 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-21 15:21:50,881 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-21 15:21:50,881 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-21 15:21:50,881 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-21 15:21:50,882 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-21 15:21:50,882 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-21 15:21:50,882 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-21 15:21:50,882 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-21 15:21:50,882 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-21 15:21:50,882 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-21 15:21:50,882 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-21 15:21:50,883 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-21 15:21:50,883 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-21 15:21:50,883 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-21 15:21:50,883 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-21 15:21:50,883 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-21 15:21:50,883 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-21 15:21:50,883 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-21 15:21:50,884 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-21 15:21:50,884 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-21 15:21:50,884 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-21 15:21:50,884 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-21 15:21:50,884 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-21 15:21:50,884 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-21 15:21:50,884 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a87860dbf851812846995aa918799e2b576306268e8c461660702f868d3b2804 [2021-12-21 15:21:51,079 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-21 15:21:51,102 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-21 15:21:51,104 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-21 15:21:51,105 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-21 15:21:51,106 INFO L275 PluginConnector]: CDTParser initialized [2021-12-21 15:21:51,107 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/popl20-more-max-array.wvr.c [2021-12-21 15:21:51,152 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8a8209a9a/07ab85c4ca7f432aa839d0b5ed27bebb/FLAG26140dbc9 [2021-12-21 15:21:51,469 INFO L306 CDTParser]: Found 1 translation units. [2021-12-21 15:21:51,469 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-more-max-array.wvr.c [2021-12-21 15:21:51,480 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8a8209a9a/07ab85c4ca7f432aa839d0b5ed27bebb/FLAG26140dbc9 [2021-12-21 15:21:51,887 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8a8209a9a/07ab85c4ca7f432aa839d0b5ed27bebb [2021-12-21 15:21:51,889 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-21 15:21:51,890 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-21 15:21:51,890 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-21 15:21:51,891 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-21 15:21:51,893 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-21 15:21:51,893 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 03:21:51" (1/1) ... [2021-12-21 15:21:51,894 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@28bed86e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 03:21:51, skipping insertion in model container [2021-12-21 15:21:51,894 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 03:21:51" (1/1) ... [2021-12-21 15:21:51,898 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-21 15:21:51,909 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-21 15:21:52,033 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/popl20-more-max-array.wvr.c[2553,2566] [2021-12-21 15:21:52,040 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-21 15:21:52,046 INFO L203 MainTranslator]: Completed pre-run [2021-12-21 15:21:52,060 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/popl20-more-max-array.wvr.c[2553,2566] [2021-12-21 15:21:52,063 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-21 15:21:52,071 INFO L208 MainTranslator]: Completed translation [2021-12-21 15:21:52,072 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 03:21:52 WrapperNode [2021-12-21 15:21:52,072 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-21 15:21:52,073 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-21 15:21:52,073 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-21 15:21:52,073 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-21 15:21:52,078 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 03:21:52" (1/1) ... [2021-12-21 15:21:52,092 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 03:21:52" (1/1) ... [2021-12-21 15:21:52,105 INFO L137 Inliner]: procedures = 24, calls = 43, calls flagged for inlining = 7, calls inlined = 7, statements flattened = 101 [2021-12-21 15:21:52,105 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-21 15:21:52,106 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-21 15:21:52,106 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-21 15:21:52,106 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-21 15:21:52,111 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 03:21:52" (1/1) ... [2021-12-21 15:21:52,112 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 03:21:52" (1/1) ... [2021-12-21 15:21:52,113 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 03:21:52" (1/1) ... [2021-12-21 15:21:52,114 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 03:21:52" (1/1) ... [2021-12-21 15:21:52,119 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 03:21:52" (1/1) ... [2021-12-21 15:21:52,126 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 03:21:52" (1/1) ... [2021-12-21 15:21:52,127 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 03:21:52" (1/1) ... [2021-12-21 15:21:52,129 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-21 15:21:52,130 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-21 15:21:52,130 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-21 15:21:52,130 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-21 15:21:52,137 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 03:21:52" (1/1) ... [2021-12-21 15:21:52,141 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-21 15:21:52,148 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 15:21:52,157 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-21 15:21:52,167 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-21 15:21:52,182 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-21 15:21:52,183 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-12-21 15:21:52,183 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-12-21 15:21:52,183 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-12-21 15:21:52,183 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-12-21 15:21:52,183 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2021-12-21 15:21:52,183 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2021-12-21 15:21:52,183 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-21 15:21:52,184 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-21 15:21:52,184 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-12-21 15:21:52,184 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-12-21 15:21:52,184 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-12-21 15:21:52,184 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-12-21 15:21:52,184 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-21 15:21:52,184 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-21 15:21:52,185 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-12-21 15:21:52,185 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-21 15:21:52,186 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-12-21 15:21:52,239 INFO L234 CfgBuilder]: Building ICFG [2021-12-21 15:21:52,240 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-21 15:21:52,490 INFO L275 CfgBuilder]: Performing block encoding [2021-12-21 15:21:52,533 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-21 15:21:52,533 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2021-12-21 15:21:52,535 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 03:21:52 BoogieIcfgContainer [2021-12-21 15:21:52,535 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-21 15:21:52,536 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-21 15:21:52,536 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-21 15:21:52,539 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-21 15:21:52,540 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.12 03:21:51" (1/3) ... [2021-12-21 15:21:52,540 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@54e9f9a2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 03:21:52, skipping insertion in model container [2021-12-21 15:21:52,540 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 03:21:52" (2/3) ... [2021-12-21 15:21:52,541 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@54e9f9a2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 03:21:52, skipping insertion in model container [2021-12-21 15:21:52,541 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 03:21:52" (3/3) ... [2021-12-21 15:21:52,542 INFO L111 eAbstractionObserver]: Analyzing ICFG popl20-more-max-array.wvr.c [2021-12-21 15:21:52,546 WARN L149 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-12-21 15:21:52,546 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-21 15:21:52,547 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-21 15:21:52,547 INFO L513 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-12-21 15:21:52,578 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork2_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:21:52,578 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork2_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:21:52,579 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork2_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:21:52,579 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork2_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:21:52,580 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork2_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:21:52,580 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork2_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:21:52,580 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:21:52,581 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:21:52,581 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:21:52,581 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:21:52,581 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:21:52,581 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork2_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:21:52,582 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~mem2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:21:52,582 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:21:52,584 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:21:52,584 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork2_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:21:52,585 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~mem2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:21:52,585 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:21:52,587 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork2_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:21:52,587 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:21:52,587 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork2_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:21:52,587 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:21:52,588 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:21:52,588 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork2_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:21:52,588 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:21:52,588 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork2_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:21:52,589 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:21:52,589 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:21:52,589 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:21:52,590 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:21:52,590 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:21:52,590 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:21:52,590 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:21:52,591 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:21:52,591 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:21:52,591 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:21:52,592 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:21:52,592 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:21:52,592 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:21:52,592 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:21:52,592 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:21:52,592 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:21:52,594 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:21:52,594 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:21:52,595 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:21:52,595 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:21:52,596 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:21:52,596 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:21:52,596 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:21:52,596 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:21:52,597 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:21:52,597 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:21:52,597 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:21:52,597 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:21:52,597 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:21:52,598 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:21:52,598 WARN L322 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:21:52,599 WARN L322 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:21:52,599 WARN L322 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:21:52,599 WARN L322 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:21:52,599 WARN L322 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:21:52,600 WARN L322 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:21:52,600 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:21:52,601 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:21:52,601 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:21:52,601 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:21:52,601 WARN L322 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:21:52,601 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~mem9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:21:52,602 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~mem8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:21:52,602 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~mem9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:21:52,603 WARN L322 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:21:52,603 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~mem9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:21:52,603 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~mem8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:21:52,603 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~mem9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:21:52,603 WARN L322 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:21:52,603 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~post7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:21:52,603 WARN L322 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:21:52,603 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~post7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:21:52,604 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~post7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:21:52,604 WARN L322 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:21:52,604 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~post7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:21:52,604 WARN L322 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:21:52,604 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~post7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:21:52,604 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~post7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:21:52,606 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:21:52,606 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:21:52,606 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:21:52,606 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:21:52,606 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:21:52,606 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:21:52,607 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~mem9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:21:52,607 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:21:52,607 WARN L322 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:21:52,607 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~mem8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:21:52,607 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:21:52,607 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~post7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:21:52,608 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:21:52,608 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~mem2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:21:52,608 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:21:52,608 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork2_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:21:52,608 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:21:52,608 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:21:52,611 INFO L148 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2021-12-21 15:21:52,647 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-21 15:21:52,651 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-12-21 15:21:52,652 INFO L340 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-12-21 15:21:52,659 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 151 places, 153 transitions, 330 flow [2021-12-21 15:21:52,700 INFO L129 PetriNetUnfolder]: 12/150 cut-off events. [2021-12-21 15:21:52,700 INFO L130 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2021-12-21 15:21:52,703 INFO L84 FinitePrefix]: Finished finitePrefix Result has 163 conditions, 150 events. 12/150 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 92 event pairs, 0 based on Foata normal form. 0/137 useless extension candidates. Maximal degree in co-relation 112. Up to 2 conditions per place. [2021-12-21 15:21:52,703 INFO L82 GeneralOperation]: Start removeDead. Operand has 151 places, 153 transitions, 330 flow [2021-12-21 15:21:52,719 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 137 places, 139 transitions, 296 flow [2021-12-21 15:21:52,741 INFO L129 PetriNetUnfolder]: 12/138 cut-off events. [2021-12-21 15:21:52,741 INFO L130 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2021-12-21 15:21:52,742 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-21 15:21:52,742 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] [2021-12-21 15:21:52,743 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-12-21 15:21:52,747 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 15:21:52,748 INFO L85 PathProgramCache]: Analyzing trace with hash -977644638, now seen corresponding path program 1 times [2021-12-21 15:21:52,753 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 15:21:52,754 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2088363370] [2021-12-21 15:21:52,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 15:21:52,755 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 15:21:52,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:21:52,920 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 15:21:52,920 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 15:21:52,920 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2088363370] [2021-12-21 15:21:52,921 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2088363370] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 15:21:52,921 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 15:21:52,921 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-21 15:21:52,922 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [912667803] [2021-12-21 15:21:52,923 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 15:21:52,929 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-12-21 15:21:52,929 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 15:21:52,957 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-12-21 15:21:52,959 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-12-21 15:21:52,961 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 135 out of 153 [2021-12-21 15:21:52,967 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 137 places, 139 transitions, 296 flow. Second operand has 2 states, 2 states have (on average 139.0) internal successors, (278), 2 states have internal predecessors, (278), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 15:21:52,967 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-21 15:21:52,967 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 135 of 153 [2021-12-21 15:21:52,968 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-21 15:21:53,054 INFO L129 PetriNetUnfolder]: 41/264 cut-off events. [2021-12-21 15:21:53,055 INFO L130 PetriNetUnfolder]: For 50/51 co-relation queries the response was YES. [2021-12-21 15:21:53,056 INFO L84 FinitePrefix]: Finished finitePrefix Result has 355 conditions, 264 events. 41/264 cut-off events. For 50/51 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 695 event pairs, 15 based on Foata normal form. 42/275 useless extension candidates. Maximal degree in co-relation 216. Up to 59 conditions per place. [2021-12-21 15:21:53,058 INFO L132 encePairwiseOnDemand]: 145/153 looper letters, 9 selfloop transitions, 0 changer transitions 4/131 dead transitions. [2021-12-21 15:21:53,058 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 138 places, 131 transitions, 298 flow [2021-12-21 15:21:53,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-12-21 15:21:53,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2021-12-21 15:21:53,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 287 transitions. [2021-12-21 15:21:53,072 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.9379084967320261 [2021-12-21 15:21:53,073 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 287 transitions. [2021-12-21 15:21:53,074 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 287 transitions. [2021-12-21 15:21:53,077 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-21 15:21:53,079 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 287 transitions. [2021-12-21 15:21:53,082 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 143.5) internal successors, (287), 2 states have internal predecessors, (287), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 15:21:53,089 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 153.0) internal successors, (459), 3 states have internal predecessors, (459), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 15:21:53,090 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 153.0) internal successors, (459), 3 states have internal predecessors, (459), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 15:21:53,091 INFO L186 Difference]: Start difference. First operand has 137 places, 139 transitions, 296 flow. Second operand 2 states and 287 transitions. [2021-12-21 15:21:53,092 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 138 places, 131 transitions, 298 flow [2021-12-21 15:21:53,096 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 132 places, 131 transitions, 286 flow, removed 0 selfloop flow, removed 6 redundant places. [2021-12-21 15:21:53,098 INFO L242 Difference]: Finished difference. Result has 132 places, 127 transitions, 260 flow [2021-12-21 15:21:53,100 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=153, PETRI_DIFFERENCE_MINUEND_FLOW=268, PETRI_DIFFERENCE_MINUEND_PLACES=131, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=131, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=131, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=260, PETRI_PLACES=132, PETRI_TRANSITIONS=127} [2021-12-21 15:21:53,104 INFO L334 CegarLoopForPetriNet]: 137 programPoint places, -5 predicate places. [2021-12-21 15:21:53,104 INFO L470 AbstractCegarLoop]: Abstraction has has 132 places, 127 transitions, 260 flow [2021-12-21 15:21:53,105 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 139.0) internal successors, (278), 2 states have internal predecessors, (278), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 15:21:53,105 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-21 15:21:53,105 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] [2021-12-21 15:21:53,105 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-21 15:21:53,106 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-12-21 15:21:53,106 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 15:21:53,106 INFO L85 PathProgramCache]: Analyzing trace with hash 1446866490, now seen corresponding path program 1 times [2021-12-21 15:21:53,107 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 15:21:53,107 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [298577768] [2021-12-21 15:21:53,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 15:21:53,107 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 15:21:53,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:21:53,419 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 15:21:53,420 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 15:21:53,420 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [298577768] [2021-12-21 15:21:53,421 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [298577768] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 15:21:53,421 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 15:21:53,421 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-21 15:21:53,421 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1243225946] [2021-12-21 15:21:53,421 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 15:21:53,422 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-21 15:21:53,422 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 15:21:53,423 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-21 15:21:53,423 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2021-12-21 15:21:53,424 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 94 out of 153 [2021-12-21 15:21:53,426 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 132 places, 127 transitions, 260 flow. Second operand has 8 states, 8 states have (on average 98.5) internal successors, (788), 8 states have internal predecessors, (788), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 15:21:53,426 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-21 15:21:53,426 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 94 of 153 [2021-12-21 15:21:53,426 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-21 15:21:53,609 INFO L129 PetriNetUnfolder]: 295/678 cut-off events. [2021-12-21 15:21:53,609 INFO L130 PetriNetUnfolder]: For 26/26 co-relation queries the response was YES. [2021-12-21 15:21:53,612 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1137 conditions, 678 events. 295/678 cut-off events. For 26/26 co-relation queries the response was YES. Maximal size of possible extension queue 55. Compared 2975 event pairs, 167 based on Foata normal form. 1/510 useless extension candidates. Maximal degree in co-relation 1134. Up to 421 conditions per place. [2021-12-21 15:21:53,616 INFO L132 encePairwiseOnDemand]: 143/153 looper letters, 44 selfloop transitions, 6 changer transitions 4/135 dead transitions. [2021-12-21 15:21:53,617 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 135 places, 135 transitions, 384 flow [2021-12-21 15:21:53,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-21 15:21:53,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-12-21 15:21:53,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 807 transitions. [2021-12-21 15:21:53,620 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.6593137254901961 [2021-12-21 15:21:53,620 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 807 transitions. [2021-12-21 15:21:53,620 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 807 transitions. [2021-12-21 15:21:53,621 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-21 15:21:53,621 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 807 transitions. [2021-12-21 15:21:53,624 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 100.875) internal successors, (807), 8 states have internal predecessors, (807), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 15:21:53,627 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 153.0) internal successors, (1377), 9 states have internal predecessors, (1377), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 15:21:53,628 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 153.0) internal successors, (1377), 9 states have internal predecessors, (1377), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 15:21:53,628 INFO L186 Difference]: Start difference. First operand has 132 places, 127 transitions, 260 flow. Second operand 8 states and 807 transitions. [2021-12-21 15:21:53,628 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 135 places, 135 transitions, 384 flow [2021-12-21 15:21:53,630 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 135 places, 135 transitions, 384 flow, removed 0 selfloop flow, removed 0 redundant places. [2021-12-21 15:21:53,632 INFO L242 Difference]: Finished difference. Result has 139 places, 128 transitions, 288 flow [2021-12-21 15:21:53,632 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=153, PETRI_DIFFERENCE_MINUEND_FLOW=260, PETRI_DIFFERENCE_MINUEND_PLACES=128, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=127, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=121, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=288, PETRI_PLACES=139, PETRI_TRANSITIONS=128} [2021-12-21 15:21:53,633 INFO L334 CegarLoopForPetriNet]: 137 programPoint places, 2 predicate places. [2021-12-21 15:21:53,637 INFO L470 AbstractCegarLoop]: Abstraction has has 139 places, 128 transitions, 288 flow [2021-12-21 15:21:53,637 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 98.5) internal successors, (788), 8 states have internal predecessors, (788), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 15:21:53,637 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-21 15:21:53,638 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] [2021-12-21 15:21:53,638 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-21 15:21:53,643 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-12-21 15:21:53,643 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 15:21:53,643 INFO L85 PathProgramCache]: Analyzing trace with hash -312552496, now seen corresponding path program 1 times [2021-12-21 15:21:53,644 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 15:21:53,644 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [125209599] [2021-12-21 15:21:53,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 15:21:53,644 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 15:21:53,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:21:53,726 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 15:21:53,727 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 15:21:53,727 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [125209599] [2021-12-21 15:21:53,727 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [125209599] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-21 15:21:53,727 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1660212462] [2021-12-21 15:21:53,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 15:21:53,727 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 15:21:53,728 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 15:21:53,729 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-21 15:21:53,730 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-12-21 15:21:53,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:21:53,806 INFO L263 TraceCheckSpWp]: Trace formula consists of 270 conjuncts, 6 conjunts are in the unsatisfiable core [2021-12-21 15:21:53,811 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 15:21:54,106 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 15:21:54,107 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-21 15:21:54,349 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 15:21:54,350 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1660212462] provided 1 perfect and 1 imperfect interpolant sequences [2021-12-21 15:21:54,350 INFO L186 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2021-12-21 15:21:54,350 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [8, 7] total 14 [2021-12-21 15:21:54,350 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [232372245] [2021-12-21 15:21:54,350 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 15:21:54,351 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-21 15:21:54,351 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 15:21:54,351 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-21 15:21:54,351 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2021-12-21 15:21:54,352 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 113 out of 153 [2021-12-21 15:21:54,353 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 139 places, 128 transitions, 288 flow. Second operand has 7 states, 7 states have (on average 116.42857142857143) internal successors, (815), 7 states have internal predecessors, (815), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 15:21:54,353 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-21 15:21:54,353 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 113 of 153 [2021-12-21 15:21:54,354 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-21 15:21:54,461 INFO L129 PetriNetUnfolder]: 175/510 cut-off events. [2021-12-21 15:21:54,461 INFO L130 PetriNetUnfolder]: For 26/26 co-relation queries the response was YES. [2021-12-21 15:21:54,463 INFO L84 FinitePrefix]: Finished finitePrefix Result has 834 conditions, 510 events. 175/510 cut-off events. For 26/26 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 2082 event pairs, 45 based on Foata normal form. 0/424 useless extension candidates. Maximal degree in co-relation 826. Up to 137 conditions per place. [2021-12-21 15:21:54,465 INFO L132 encePairwiseOnDemand]: 145/153 looper letters, 33 selfloop transitions, 7 changer transitions 0/136 dead transitions. [2021-12-21 15:21:54,466 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 143 places, 136 transitions, 386 flow [2021-12-21 15:21:54,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-21 15:21:54,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-12-21 15:21:54,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 831 transitions. [2021-12-21 15:21:54,467 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7759103641456583 [2021-12-21 15:21:54,468 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 831 transitions. [2021-12-21 15:21:54,468 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 831 transitions. [2021-12-21 15:21:54,468 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-21 15:21:54,468 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 831 transitions. [2021-12-21 15:21:54,469 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 118.71428571428571) internal successors, (831), 7 states have internal predecessors, (831), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 15:21:54,471 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 153.0) internal successors, (1224), 8 states have internal predecessors, (1224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 15:21:54,471 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 153.0) internal successors, (1224), 8 states have internal predecessors, (1224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 15:21:54,472 INFO L186 Difference]: Start difference. First operand has 139 places, 128 transitions, 288 flow. Second operand 7 states and 831 transitions. [2021-12-21 15:21:54,472 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 143 places, 136 transitions, 386 flow [2021-12-21 15:21:54,474 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 136 places, 136 transitions, 368 flow, removed 3 selfloop flow, removed 7 redundant places. [2021-12-21 15:21:54,477 INFO L242 Difference]: Finished difference. Result has 139 places, 130 transitions, 303 flow [2021-12-21 15:21:54,477 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=153, PETRI_DIFFERENCE_MINUEND_FLOW=270, PETRI_DIFFERENCE_MINUEND_PLACES=130, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=128, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=121, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=303, PETRI_PLACES=139, PETRI_TRANSITIONS=130} [2021-12-21 15:21:54,478 INFO L334 CegarLoopForPetriNet]: 137 programPoint places, 2 predicate places. [2021-12-21 15:21:54,479 INFO L470 AbstractCegarLoop]: Abstraction has has 139 places, 130 transitions, 303 flow [2021-12-21 15:21:54,479 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 116.42857142857143) internal successors, (815), 7 states have internal predecessors, (815), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 15:21:54,479 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-21 15:21:54,479 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] [2021-12-21 15:21:54,501 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-12-21 15:21:54,701 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 15:21:54,701 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-12-21 15:21:54,701 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 15:21:54,702 INFO L85 PathProgramCache]: Analyzing trace with hash -505819659, now seen corresponding path program 1 times [2021-12-21 15:21:54,702 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 15:21:54,702 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1834837259] [2021-12-21 15:21:54,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 15:21:54,702 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 15:21:54,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:21:54,801 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-21 15:21:54,801 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 15:21:54,801 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1834837259] [2021-12-21 15:21:54,802 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1834837259] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-21 15:21:54,802 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [565229098] [2021-12-21 15:21:54,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 15:21:54,802 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 15:21:54,802 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 15:21:54,805 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-21 15:21:54,806 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-12-21 15:21:54,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:21:54,876 INFO L263 TraceCheckSpWp]: Trace formula consists of 277 conjuncts, 8 conjunts are in the unsatisfiable core [2021-12-21 15:21:54,879 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 15:21:55,108 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-21 15:21:55,108 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-21 15:21:55,357 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-21 15:21:55,358 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [565229098] provided 1 perfect and 1 imperfect interpolant sequences [2021-12-21 15:21:55,358 INFO L186 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2021-12-21 15:21:55,358 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [10, 9] total 18 [2021-12-21 15:21:55,358 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [898290587] [2021-12-21 15:21:55,358 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 15:21:55,359 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-21 15:21:55,359 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 15:21:55,360 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-21 15:21:55,360 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=242, Unknown=0, NotChecked=0, Total=306 [2021-12-21 15:21:55,361 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 106 out of 153 [2021-12-21 15:21:55,362 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 139 places, 130 transitions, 303 flow. Second operand has 9 states, 9 states have (on average 109.33333333333333) internal successors, (984), 9 states have internal predecessors, (984), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 15:21:55,362 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-21 15:21:55,362 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 106 of 153 [2021-12-21 15:21:55,362 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-21 15:21:55,682 INFO L129 PetriNetUnfolder]: 599/1273 cut-off events. [2021-12-21 15:21:55,682 INFO L130 PetriNetUnfolder]: For 404/585 co-relation queries the response was YES. [2021-12-21 15:21:55,685 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2530 conditions, 1273 events. 599/1273 cut-off events. For 404/585 co-relation queries the response was YES. Maximal size of possible extension queue 75. Compared 6934 event pairs, 124 based on Foata normal form. 181/1303 useless extension candidates. Maximal degree in co-relation 2522. Up to 249 conditions per place. [2021-12-21 15:21:55,690 INFO L132 encePairwiseOnDemand]: 141/153 looper letters, 74 selfloop transitions, 19 changer transitions 0/182 dead transitions. [2021-12-21 15:21:55,690 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 149 places, 182 transitions, 642 flow [2021-12-21 15:21:55,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-12-21 15:21:55,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2021-12-21 15:21:55,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1253 transitions. [2021-12-21 15:21:55,704 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.744503862150921 [2021-12-21 15:21:55,704 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1253 transitions. [2021-12-21 15:21:55,704 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1253 transitions. [2021-12-21 15:21:55,705 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-21 15:21:55,705 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1253 transitions. [2021-12-21 15:21:55,707 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 113.9090909090909) internal successors, (1253), 11 states have internal predecessors, (1253), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 15:21:55,709 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 153.0) internal successors, (1836), 12 states have internal predecessors, (1836), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 15:21:55,710 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 153.0) internal successors, (1836), 12 states have internal predecessors, (1836), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 15:21:55,710 INFO L186 Difference]: Start difference. First operand has 139 places, 130 transitions, 303 flow. Second operand 11 states and 1253 transitions. [2021-12-21 15:21:55,710 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 149 places, 182 transitions, 642 flow [2021-12-21 15:21:55,711 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 145 places, 182 transitions, 629 flow, removed 0 selfloop flow, removed 4 redundant places. [2021-12-21 15:21:55,713 INFO L242 Difference]: Finished difference. Result has 151 places, 142 transitions, 402 flow [2021-12-21 15:21:55,713 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=153, PETRI_DIFFERENCE_MINUEND_FLOW=295, PETRI_DIFFERENCE_MINUEND_PLACES=135, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=130, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=119, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=402, PETRI_PLACES=151, PETRI_TRANSITIONS=142} [2021-12-21 15:21:55,714 INFO L334 CegarLoopForPetriNet]: 137 programPoint places, 14 predicate places. [2021-12-21 15:21:55,714 INFO L470 AbstractCegarLoop]: Abstraction has has 151 places, 142 transitions, 402 flow [2021-12-21 15:21:55,715 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 109.33333333333333) internal successors, (984), 9 states have internal predecessors, (984), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 15:21:55,715 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-21 15:21:55,715 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] [2021-12-21 15:21:55,751 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-12-21 15:21:55,931 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2021-12-21 15:21:55,932 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-12-21 15:21:55,932 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 15:21:55,932 INFO L85 PathProgramCache]: Analyzing trace with hash 1014903075, now seen corresponding path program 2 times [2021-12-21 15:21:55,932 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 15:21:55,932 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1921567260] [2021-12-21 15:21:55,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 15:21:55,932 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 15:21:55,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:21:56,033 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-21 15:21:56,034 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 15:21:56,034 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1921567260] [2021-12-21 15:21:56,034 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1921567260] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-21 15:21:56,035 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [570196143] [2021-12-21 15:21:56,035 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-21 15:21:56,035 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 15:21:56,035 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 15:21:56,036 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-21 15:21:56,037 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-12-21 15:21:56,110 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-12-21 15:21:56,110 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-21 15:21:56,111 INFO L263 TraceCheckSpWp]: Trace formula consists of 257 conjuncts, 7 conjunts are in the unsatisfiable core [2021-12-21 15:21:56,120 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 15:21:56,403 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-12-21 15:21:56,403 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-21 15:21:56,403 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [570196143] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 15:21:56,403 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-21 15:21:56,403 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [10] total 14 [2021-12-21 15:21:56,404 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [503045484] [2021-12-21 15:21:56,404 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 15:21:56,404 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-21 15:21:56,404 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 15:21:56,405 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-21 15:21:56,405 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2021-12-21 15:21:56,406 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 101 out of 153 [2021-12-21 15:21:56,407 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 151 places, 142 transitions, 402 flow. Second operand has 6 states, 6 states have (on average 106.5) internal successors, (639), 6 states have internal predecessors, (639), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 15:21:56,407 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-21 15:21:56,407 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 101 of 153 [2021-12-21 15:21:56,407 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-21 15:21:56,610 INFO L129 PetriNetUnfolder]: 413/833 cut-off events. [2021-12-21 15:21:56,610 INFO L130 PetriNetUnfolder]: For 772/877 co-relation queries the response was YES. [2021-12-21 15:21:56,612 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2163 conditions, 833 events. 413/833 cut-off events. For 772/877 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 3682 event pairs, 111 based on Foata normal form. 131/942 useless extension candidates. Maximal degree in co-relation 2149. Up to 334 conditions per place. [2021-12-21 15:21:56,615 INFO L132 encePairwiseOnDemand]: 144/153 looper letters, 42 selfloop transitions, 11 changer transitions 0/144 dead transitions. [2021-12-21 15:21:56,615 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 156 places, 144 transitions, 501 flow [2021-12-21 15:21:56,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-21 15:21:56,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-12-21 15:21:56,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 857 transitions. [2021-12-21 15:21:56,618 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7001633986928104 [2021-12-21 15:21:56,619 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 857 transitions. [2021-12-21 15:21:56,619 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 857 transitions. [2021-12-21 15:21:56,619 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-21 15:21:56,619 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 857 transitions. [2021-12-21 15:21:56,621 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 107.125) internal successors, (857), 8 states have internal predecessors, (857), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 15:21:56,622 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 153.0) internal successors, (1377), 9 states have internal predecessors, (1377), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 15:21:56,623 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 153.0) internal successors, (1377), 9 states have internal predecessors, (1377), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 15:21:56,623 INFO L186 Difference]: Start difference. First operand has 151 places, 142 transitions, 402 flow. Second operand 8 states and 857 transitions. [2021-12-21 15:21:56,623 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 156 places, 144 transitions, 501 flow [2021-12-21 15:21:56,628 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 150 places, 144 transitions, 488 flow, removed 3 selfloop flow, removed 6 redundant places. [2021-12-21 15:21:56,630 INFO L242 Difference]: Finished difference. Result has 150 places, 136 transitions, 379 flow [2021-12-21 15:21:56,631 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=153, PETRI_DIFFERENCE_MINUEND_FLOW=357, PETRI_DIFFERENCE_MINUEND_PLACES=143, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=136, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=125, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=379, PETRI_PLACES=150, PETRI_TRANSITIONS=136} [2021-12-21 15:21:56,632 INFO L334 CegarLoopForPetriNet]: 137 programPoint places, 13 predicate places. [2021-12-21 15:21:56,633 INFO L470 AbstractCegarLoop]: Abstraction has has 150 places, 136 transitions, 379 flow [2021-12-21 15:21:56,633 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 106.5) internal successors, (639), 6 states have internal predecessors, (639), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 15:21:56,633 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-21 15:21:56,633 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, 1, 1, 1, 1, 1] [2021-12-21 15:21:56,653 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-12-21 15:21:56,849 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 15:21:56,850 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-12-21 15:21:56,850 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 15:21:56,850 INFO L85 PathProgramCache]: Analyzing trace with hash 1225204200, now seen corresponding path program 1 times [2021-12-21 15:21:56,850 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 15:21:56,850 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1687199861] [2021-12-21 15:21:56,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 15:21:56,851 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 15:21:56,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:21:57,374 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 15:21:57,375 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 15:21:57,375 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1687199861] [2021-12-21 15:21:57,375 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1687199861] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-21 15:21:57,375 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2023346058] [2021-12-21 15:21:57,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 15:21:57,376 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 15:21:57,376 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 15:21:57,377 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-21 15:21:57,379 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-12-21 15:21:57,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:21:57,461 INFO L263 TraceCheckSpWp]: Trace formula consists of 284 conjuncts, 37 conjunts are in the unsatisfiable core [2021-12-21 15:21:57,465 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 15:21:58,799 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-21 15:21:58,801 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-21 15:21:58,802 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 63 treesize of output 36 [2021-12-21 15:21:58,931 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 15:21:58,931 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-21 15:21:59,199 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-21 15:21:59,200 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 87 treesize of output 55 [2021-12-21 15:21:59,924 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 15:21:59,925 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2023346058] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-21 15:21:59,925 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-21 15:21:59,925 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 24, 18] total 56 [2021-12-21 15:21:59,925 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1396464057] [2021-12-21 15:21:59,925 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-21 15:21:59,926 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 56 states [2021-12-21 15:21:59,926 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 15:21:59,927 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 56 interpolants. [2021-12-21 15:21:59,928 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=389, Invalid=2691, Unknown=0, NotChecked=0, Total=3080 [2021-12-21 15:21:59,931 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 65 out of 153 [2021-12-21 15:21:59,936 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 150 places, 136 transitions, 379 flow. Second operand has 56 states, 56 states have (on average 68.39285714285714) internal successors, (3830), 56 states have internal predecessors, (3830), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 15:21:59,936 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-21 15:21:59,936 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 65 of 153 [2021-12-21 15:21:59,936 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-21 15:22:04,338 INFO L129 PetriNetUnfolder]: 7004/11453 cut-off events. [2021-12-21 15:22:04,338 INFO L130 PetriNetUnfolder]: For 9233/9233 co-relation queries the response was YES. [2021-12-21 15:22:04,361 INFO L84 FinitePrefix]: Finished finitePrefix Result has 29290 conditions, 11453 events. 7004/11453 cut-off events. For 9233/9233 co-relation queries the response was YES. Maximal size of possible extension queue 541. Compared 79516 event pairs, 711 based on Foata normal form. 84/11378 useless extension candidates. Maximal degree in co-relation 29278. Up to 3532 conditions per place. [2021-12-21 15:22:04,407 INFO L132 encePairwiseOnDemand]: 110/153 looper letters, 431 selfloop transitions, 193 changer transitions 13/689 dead transitions. [2021-12-21 15:22:04,407 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 223 places, 689 transitions, 3573 flow [2021-12-21 15:22:04,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 74 states. [2021-12-21 15:22:04,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74 states. [2021-12-21 15:22:04,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 5413 transitions. [2021-12-21 15:22:04,419 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.47809574280162515 [2021-12-21 15:22:04,420 INFO L72 ComplementDD]: Start complementDD. Operand 74 states and 5413 transitions. [2021-12-21 15:22:04,420 INFO L73 IsDeterministic]: Start isDeterministic. Operand 74 states and 5413 transitions. [2021-12-21 15:22:04,423 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-21 15:22:04,423 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 74 states and 5413 transitions. [2021-12-21 15:22:04,433 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 75 states, 74 states have (on average 73.14864864864865) internal successors, (5413), 74 states have internal predecessors, (5413), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 15:22:04,481 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 75 states, 75 states have (on average 153.0) internal successors, (11475), 75 states have internal predecessors, (11475), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 15:22:04,483 INFO L81 ComplementDD]: Finished complementDD. Result has 75 states, 75 states have (on average 153.0) internal successors, (11475), 75 states have internal predecessors, (11475), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 15:22:04,483 INFO L186 Difference]: Start difference. First operand has 150 places, 136 transitions, 379 flow. Second operand 74 states and 5413 transitions. [2021-12-21 15:22:04,483 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 223 places, 689 transitions, 3573 flow [2021-12-21 15:22:04,560 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 218 places, 689 transitions, 3509 flow, removed 0 selfloop flow, removed 5 redundant places. [2021-12-21 15:22:04,569 INFO L242 Difference]: Finished difference. Result has 262 places, 325 transitions, 1831 flow [2021-12-21 15:22:04,569 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=153, PETRI_DIFFERENCE_MINUEND_FLOW=366, PETRI_DIFFERENCE_MINUEND_PLACES=145, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=136, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=91, PETRI_DIFFERENCE_SUBTRAHEND_STATES=74, PETRI_FLOW=1831, PETRI_PLACES=262, PETRI_TRANSITIONS=325} [2021-12-21 15:22:04,570 INFO L334 CegarLoopForPetriNet]: 137 programPoint places, 125 predicate places. [2021-12-21 15:22:04,571 INFO L470 AbstractCegarLoop]: Abstraction has has 262 places, 325 transitions, 1831 flow [2021-12-21 15:22:04,572 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 56 states, 56 states have (on average 68.39285714285714) internal successors, (3830), 56 states have internal predecessors, (3830), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 15:22:04,572 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-21 15:22:04,572 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, 1, 1, 1, 1, 1] [2021-12-21 15:22:04,591 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2021-12-21 15:22:04,772 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 15:22:04,773 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-12-21 15:22:04,773 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 15:22:04,774 INFO L85 PathProgramCache]: Analyzing trace with hash 513619604, now seen corresponding path program 2 times [2021-12-21 15:22:04,774 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 15:22:04,774 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [589976407] [2021-12-21 15:22:04,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 15:22:04,774 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 15:22:04,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:22:05,387 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 15:22:05,387 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 15:22:05,387 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [589976407] [2021-12-21 15:22:05,387 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [589976407] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-21 15:22:05,387 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1385801777] [2021-12-21 15:22:05,387 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-21 15:22:05,387 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 15:22:05,388 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 15:22:05,388 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-21 15:22:05,412 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-12-21 15:22:05,473 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-12-21 15:22:05,473 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-21 15:22:05,474 INFO L263 TraceCheckSpWp]: Trace formula consists of 284 conjuncts, 29 conjunts are in the unsatisfiable core [2021-12-21 15:22:05,476 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 15:22:06,020 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-21 15:22:06,020 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 69 treesize of output 45 [2021-12-21 15:22:06,664 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-21 15:22:06,664 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-21 15:22:06,853 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-21 15:22:06,854 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 87 treesize of output 55 [2021-12-21 15:22:07,335 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-21 15:22:07,338 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1385801777] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-21 15:22:07,338 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-21 15:22:07,338 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 16, 15] total 42 [2021-12-21 15:22:07,339 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [789736120] [2021-12-21 15:22:07,339 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-21 15:22:07,340 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2021-12-21 15:22:07,340 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 15:22:07,341 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2021-12-21 15:22:07,341 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=284, Invalid=1438, Unknown=0, NotChecked=0, Total=1722 [2021-12-21 15:22:07,343 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 66 out of 153 [2021-12-21 15:22:07,345 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 262 places, 325 transitions, 1831 flow. Second operand has 42 states, 42 states have (on average 70.28571428571429) internal successors, (2952), 42 states have internal predecessors, (2952), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 15:22:07,345 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-21 15:22:07,345 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 66 of 153 [2021-12-21 15:22:07,345 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-21 15:22:12,043 INFO L129 PetriNetUnfolder]: 7974/13195 cut-off events. [2021-12-21 15:22:12,043 INFO L130 PetriNetUnfolder]: For 84287/84676 co-relation queries the response was YES. [2021-12-21 15:22:12,127 INFO L84 FinitePrefix]: Finished finitePrefix Result has 54371 conditions, 13195 events. 7974/13195 cut-off events. For 84287/84676 co-relation queries the response was YES. Maximal size of possible extension queue 636. Compared 96243 event pairs, 1643 based on Foata normal form. 45/13074 useless extension candidates. Maximal degree in co-relation 54316. Up to 7387 conditions per place. [2021-12-21 15:22:12,192 INFO L132 encePairwiseOnDemand]: 122/153 looper letters, 373 selfloop transitions, 165 changer transitions 19/611 dead transitions. [2021-12-21 15:22:12,192 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 301 places, 611 transitions, 4700 flow [2021-12-21 15:22:12,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2021-12-21 15:22:12,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2021-12-21 15:22:12,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 3226 transitions. [2021-12-21 15:22:12,196 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.4792038027332145 [2021-12-21 15:22:12,196 INFO L72 ComplementDD]: Start complementDD. Operand 44 states and 3226 transitions. [2021-12-21 15:22:12,197 INFO L73 IsDeterministic]: Start isDeterministic. Operand 44 states and 3226 transitions. [2021-12-21 15:22:12,199 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-21 15:22:12,199 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 44 states and 3226 transitions. [2021-12-21 15:22:12,204 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 45 states, 44 states have (on average 73.31818181818181) internal successors, (3226), 44 states have internal predecessors, (3226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 15:22:12,211 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 45 states, 45 states have (on average 153.0) internal successors, (6885), 45 states have internal predecessors, (6885), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 15:22:12,212 INFO L81 ComplementDD]: Finished complementDD. Result has 45 states, 45 states have (on average 153.0) internal successors, (6885), 45 states have internal predecessors, (6885), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 15:22:12,212 INFO L186 Difference]: Start difference. First operand has 262 places, 325 transitions, 1831 flow. Second operand 44 states and 3226 transitions. [2021-12-21 15:22:12,212 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 301 places, 611 transitions, 4700 flow [2021-12-21 15:22:12,563 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 284 places, 611 transitions, 4628 flow, removed 20 selfloop flow, removed 17 redundant places. [2021-12-21 15:22:12,610 INFO L242 Difference]: Finished difference. Result has 307 places, 416 transitions, 3071 flow [2021-12-21 15:22:12,611 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=153, PETRI_DIFFERENCE_MINUEND_FLOW=1775, PETRI_DIFFERENCE_MINUEND_PLACES=241, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=325, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=83, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=207, PETRI_DIFFERENCE_SUBTRAHEND_STATES=44, PETRI_FLOW=3071, PETRI_PLACES=307, PETRI_TRANSITIONS=416} [2021-12-21 15:22:12,611 INFO L334 CegarLoopForPetriNet]: 137 programPoint places, 170 predicate places. [2021-12-21 15:22:12,611 INFO L470 AbstractCegarLoop]: Abstraction has has 307 places, 416 transitions, 3071 flow [2021-12-21 15:22:12,612 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 42 states, 42 states have (on average 70.28571428571429) internal successors, (2952), 42 states have internal predecessors, (2952), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 15:22:12,612 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-21 15:22:12,612 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, 1, 1, 1, 1, 1] [2021-12-21 15:22:12,636 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-12-21 15:22:12,813 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 15:22:12,813 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-12-21 15:22:12,813 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 15:22:12,814 INFO L85 PathProgramCache]: Analyzing trace with hash -1183853158, now seen corresponding path program 3 times [2021-12-21 15:22:12,814 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 15:22:12,814 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1770843017] [2021-12-21 15:22:12,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 15:22:12,814 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 15:22:12,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:22:13,465 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 15:22:13,466 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 15:22:13,466 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1770843017] [2021-12-21 15:22:13,466 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1770843017] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-21 15:22:13,466 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1303978993] [2021-12-21 15:22:13,466 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-12-21 15:22:13,466 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 15:22:13,466 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 15:22:13,467 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-21 15:22:13,468 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-12-21 15:22:13,589 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-12-21 15:22:13,589 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-21 15:22:13,591 INFO L263 TraceCheckSpWp]: Trace formula consists of 284 conjuncts, 49 conjunts are in the unsatisfiable core [2021-12-21 15:22:13,594 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 15:22:14,254 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-12-21 15:22:14,632 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-12-21 15:22:14,738 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-12-21 15:22:14,980 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-12-21 15:22:15,322 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-21 15:22:15,323 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 69 treesize of output 45 [2021-12-21 15:22:15,868 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 15:22:15,868 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-21 15:22:16,957 WARN L838 $PredicateComparison]: unable to prove that (or (and (forall ((v_ArrVal_225 (Array Int Int))) (let ((.cse3 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_225) c_~A~0.base))) (let ((.cse0 (select .cse3 c_~A~0.offset))) (or (not (< c_~max1~0 .cse0)) (let ((.cse2 (select .cse3 (+ c_~A~0.offset (* 4 c_~M~0))))) (let ((.cse1 (< c_~max2~0 .cse2))) (and (or (= c_~max2~0 .cse0) .cse1) (or (not .cse1) (= .cse2 .cse0))))))))) (forall ((v_ArrVal_225 (Array Int Int))) (let ((.cse6 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_225) c_~A~0.base))) (or (let ((.cse4 (select .cse6 (+ c_~A~0.offset (* 4 c_~M~0))))) (let ((.cse5 (< c_~max2~0 .cse4))) (and (or (= c_~max1~0 .cse4) (not .cse5)) (or (= c_~max1~0 c_~max2~0) .cse5)))) (< c_~max1~0 (select .cse6 c_~A~0.offset)))))) (<= (+ 2 c_~M~0) c_~N~0) (not (< c_~M~0 c_~N~0))) is different from false [2021-12-21 15:22:20,257 WARN L838 $PredicateComparison]: unable to prove that (forall ((~M~0 Int)) (or (<= (+ 2 ~M~0) c_~N~0) (not (< ~M~0 c_~N~0)) (< 0 ~M~0) (and (forall ((v_ArrVal_225 (Array Int Int)) (v_ArrVal_224 (Array Int Int))) (let ((.cse2 (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_224) |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_225) c_~A~0.base))) (or (let ((.cse0 (select .cse2 (+ c_~A~0.offset (* ~M~0 4))))) (let ((.cse1 (< c_~max2~0 .cse0))) (and (or (= c_~max1~0 .cse0) (not .cse1)) (or (= c_~max1~0 c_~max2~0) .cse1)))) (< c_~max1~0 (select .cse2 c_~A~0.offset))))) (forall ((v_ArrVal_225 (Array Int Int)) (v_ArrVal_224 (Array Int Int))) (let ((.cse6 (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_224) |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_225) c_~A~0.base))) (let ((.cse3 (select .cse6 c_~A~0.offset))) (or (not (< c_~max1~0 .cse3)) (let ((.cse4 (select .cse6 (+ c_~A~0.offset (* ~M~0 4))))) (let ((.cse5 (< c_~max2~0 .cse4))) (and (or (= .cse3 .cse4) (not .cse5)) (or (= .cse3 c_~max2~0) .cse5))))))))))) is different from false [2021-12-21 15:22:23,090 WARN L838 $PredicateComparison]: unable to prove that (forall ((~M~0 Int)) (or (<= (+ 2 ~M~0) c_~N~0) (not (< ~M~0 c_~N~0)) (< 0 ~M~0) (and (forall ((v_ArrVal_223 (Array Int Int)) (v_ArrVal_225 (Array Int Int)) (v_ArrVal_224 (Array Int Int))) (let ((.cse2 (select (store (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_223) |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_224) |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_225) c_~A~0.base))) (or (let ((.cse1 (select .cse2 (+ c_~A~0.offset (* ~M~0 4))))) (let ((.cse0 (< c_~max2~0 .cse1))) (and (or (not .cse0) (= c_~max1~0 .cse1)) (or .cse0 (= c_~max1~0 c_~max2~0))))) (< c_~max1~0 (select .cse2 c_~A~0.offset))))) (forall ((v_ArrVal_223 (Array Int Int)) (v_ArrVal_225 (Array Int Int)) (v_ArrVal_224 (Array Int Int))) (let ((.cse6 (select (store (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_223) |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_224) |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_225) c_~A~0.base))) (let ((.cse3 (select .cse6 c_~A~0.offset))) (or (not (< c_~max1~0 .cse3)) (let ((.cse5 (select .cse6 (+ c_~A~0.offset (* ~M~0 4))))) (let ((.cse4 (< c_~max2~0 .cse5))) (and (or (not .cse4) (= .cse3 .cse5)) (or .cse4 (= .cse3 c_~max2~0)))))))))))) is different from false [2021-12-21 15:22:33,396 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-21 15:22:33,398 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 316 treesize of output 209 [2021-12-21 15:22:33,422 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-21 15:22:33,423 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 2593 treesize of output 2497 [2021-12-21 15:22:33,468 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-21 15:22:33,468 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 2452 treesize of output 2385 [2021-12-21 15:22:33,497 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-21 15:22:33,497 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 2372 treesize of output 2225 [2021-12-21 15:22:33,523 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-21 15:22:33,526 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 2212 treesize of output 2185 [2021-12-21 15:22:33,553 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-21 15:22:33,553 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 2172 treesize of output 2089 [2021-12-21 15:22:33,581 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-21 15:22:33,582 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 2076 treesize of output 1897 [2021-12-21 15:22:33,612 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-21 15:22:33,612 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 1884 treesize of output 1849 [2021-12-21 15:22:36,870 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 1 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 15:22:36,871 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1303978993] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-21 15:22:36,871 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-21 15:22:36,871 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 31, 26] total 69 [2021-12-21 15:22:36,871 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [386627331] [2021-12-21 15:22:36,871 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-21 15:22:36,872 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 69 states [2021-12-21 15:22:36,872 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 15:22:36,872 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 69 interpolants. [2021-12-21 15:22:36,873 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=634, Invalid=3602, Unknown=66, NotChecked=390, Total=4692 [2021-12-21 15:22:36,875 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 153 [2021-12-21 15:22:36,878 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 307 places, 416 transitions, 3071 flow. Second operand has 69 states, 69 states have (on average 57.85507246376812) internal successors, (3992), 69 states have internal predecessors, (3992), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 15:22:36,878 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-21 15:22:36,878 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 153 [2021-12-21 15:22:36,878 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-21 15:22:46,266 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse1 (= c_~max2~0 0)) (.cse2 (< 0 c_~max2~0)) (.cse0 (= c_~max1~0 0)) (.cse3 (= c_~max1~0 c_~max2~0))) (and (or (and .cse0 .cse1) (and .cse2 .cse3)) (<= 1 c_~N~0) (let ((.cse5 (< 0 c_~max1~0)) (.cse4 (<= c_thread3Thread1of1ForFork1_~i~2 1)) (.cse6 (< c_thread3Thread1of1ForFork1_~i~2 1))) (or (and .cse1 (or (and .cse0 .cse4) (and .cse5 .cse6))) (and .cse2 (or (and .cse5 (or .cse6 (and .cse3 .cse4))) (and .cse0 .cse6))))) (or (and (forall ((v_ArrVal_225 (Array Int Int))) (let ((.cse10 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_225) c_~A~0.base))) (let ((.cse7 (select .cse10 c_~A~0.offset))) (or (not (< c_~max1~0 .cse7)) (let ((.cse9 (select .cse10 (+ c_~A~0.offset (* 4 c_~M~0))))) (let ((.cse8 (< c_~max2~0 .cse9))) (and (or (= c_~max2~0 .cse7) .cse8) (or (not .cse8) (= .cse9 .cse7))))))))) (forall ((v_ArrVal_225 (Array Int Int))) (let ((.cse13 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_225) c_~A~0.base))) (or (let ((.cse11 (select .cse13 (+ c_~A~0.offset (* 4 c_~M~0))))) (let ((.cse12 (< c_~max2~0 .cse11))) (and (or (= c_~max1~0 .cse11) (not .cse12)) (or (= c_~max1~0 c_~max2~0) .cse12)))) (< c_~max1~0 (select .cse13 c_~A~0.offset)))))) (<= (+ 2 c_~M~0) c_~N~0) (not (< c_~M~0 c_~N~0))) (< 0 c_~N~0) (or .cse3 (<= 2 c_~N~0)) (forall ((~M~0 Int)) (or (<= (+ 2 ~M~0) c_~N~0) (not (< ~M~0 c_~N~0)) (and (forall ((v_ArrVal_225 (Array Int Int))) (let ((.cse17 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_225) c_~A~0.base))) (let ((.cse14 (select .cse17 c_~A~0.offset))) (or (not (< c_~max1~0 .cse14)) (let ((.cse15 (select .cse17 (+ c_~A~0.offset (* ~M~0 4))))) (let ((.cse16 (< c_~max2~0 .cse15))) (and (or (= .cse15 .cse14) (not .cse16)) (or (= c_~max2~0 .cse14) .cse16)))))))) (forall ((v_ArrVal_225 (Array Int Int))) (let ((.cse20 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_225) c_~A~0.base))) (or (let ((.cse19 (select .cse20 (+ c_~A~0.offset (* ~M~0 4))))) (let ((.cse18 (< c_~max2~0 .cse19))) (and (or (= c_~max1~0 c_~max2~0) .cse18) (or (not .cse18) (= .cse19 c_~max1~0))))) (< c_~max1~0 (select .cse20 c_~A~0.offset)))))) (< c_thread2Thread1of1ForFork0_~i~1 ~M~0))) (or (let ((.cse26 (select |c_#memory_int| c_~A~0.base))) (let ((.cse23 (select .cse26 (+ c_~A~0.offset (* c_thread3Thread1of1ForFork1_~i~2 4))))) (let ((.cse25 (select .cse26 (+ c_~A~0.offset (* c_thread1Thread1of1ForFork2_~i~0 4)))) (.cse21 (< c_~max2~0 .cse23))) (let ((.cse22 (not .cse21)) (.cse24 (< c_~max1~0 .cse25))) (and (or (and (or .cse3 .cse21) (or .cse22 (= c_~max1~0 .cse23))) .cse24) (or (and (or .cse22 (= .cse25 .cse23)) (or .cse21 (= .cse25 c_~max2~0))) (not .cse24))))))) (<= (+ 2 c_thread3Thread1of1ForFork1_~i~2) c_~N~0) (not (< c_thread3Thread1of1ForFork1_~i~2 c_~N~0))))) is different from false [2021-12-21 15:22:50,298 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse1 (= c_~max2~0 0)) (.cse2 (< 0 c_~max2~0)) (.cse0 (= c_~max1~0 0)) (.cse3 (= c_~max1~0 c_~max2~0))) (and (or (and .cse0 .cse1) (and .cse2 .cse3)) (<= 1 c_~N~0) (let ((.cse5 (< 0 c_~max1~0)) (.cse4 (<= c_thread3Thread1of1ForFork1_~i~2 1)) (.cse6 (< c_thread3Thread1of1ForFork1_~i~2 1))) (or (and .cse1 (or (and .cse0 .cse4) (and .cse5 .cse6))) (and .cse2 (or (and .cse5 (or .cse6 (and .cse3 .cse4))) (and .cse0 .cse6))))) (< 0 c_~N~0) (or .cse3 (<= 2 c_~N~0)) (forall ((~M~0 Int)) (or (<= (+ 2 ~M~0) c_~N~0) (not (< ~M~0 c_~N~0)) (and (forall ((v_ArrVal_225 (Array Int Int))) (let ((.cse10 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_225) c_~A~0.base))) (let ((.cse7 (select .cse10 c_~A~0.offset))) (or (not (< c_~max1~0 .cse7)) (let ((.cse8 (select .cse10 (+ c_~A~0.offset (* ~M~0 4))))) (let ((.cse9 (< c_~max2~0 .cse8))) (and (or (= .cse8 .cse7) (not .cse9)) (or (= c_~max2~0 .cse7) .cse9)))))))) (forall ((v_ArrVal_225 (Array Int Int))) (let ((.cse13 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_225) c_~A~0.base))) (or (let ((.cse12 (select .cse13 (+ c_~A~0.offset (* ~M~0 4))))) (let ((.cse11 (< c_~max2~0 .cse12))) (and (or (= c_~max1~0 c_~max2~0) .cse11) (or (not .cse11) (= .cse12 c_~max1~0))))) (< c_~max1~0 (select .cse13 c_~A~0.offset)))))) (< c_thread2Thread1of1ForFork0_~i~1 ~M~0))) (= |c_ULTIMATE.start_assume_abort_if_not_#in~cond#1| 0))) is different from false [2021-12-21 15:22:50,571 INFO L129 PetriNetUnfolder]: 10977/18712 cut-off events. [2021-12-21 15:22:50,571 INFO L130 PetriNetUnfolder]: For 151790/152126 co-relation queries the response was YES. [2021-12-21 15:22:50,692 INFO L84 FinitePrefix]: Finished finitePrefix Result has 86377 conditions, 18712 events. 10977/18712 cut-off events. For 151790/152126 co-relation queries the response was YES. Maximal size of possible extension queue 951. Compared 148364 event pairs, 2333 based on Foata normal form. 46/18537 useless extension candidates. Maximal degree in co-relation 86303. Up to 7863 conditions per place. [2021-12-21 15:22:50,772 INFO L132 encePairwiseOnDemand]: 106/153 looper letters, 556 selfloop transitions, 391 changer transitions 28/1023 dead transitions. [2021-12-21 15:22:50,773 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 387 places, 1023 transitions, 10299 flow [2021-12-21 15:22:50,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 86 states. [2021-12-21 15:22:50,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 86 states. [2021-12-21 15:22:50,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 5355 transitions. [2021-12-21 15:22:50,779 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.4069767441860465 [2021-12-21 15:22:50,779 INFO L72 ComplementDD]: Start complementDD. Operand 86 states and 5355 transitions. [2021-12-21 15:22:50,779 INFO L73 IsDeterministic]: Start isDeterministic. Operand 86 states and 5355 transitions. [2021-12-21 15:22:50,780 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-21 15:22:50,780 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 86 states and 5355 transitions. [2021-12-21 15:22:50,794 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 87 states, 86 states have (on average 62.26744186046512) internal successors, (5355), 86 states have internal predecessors, (5355), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 15:22:50,807 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 87 states, 87 states have (on average 153.0) internal successors, (13311), 87 states have internal predecessors, (13311), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 15:22:50,810 INFO L81 ComplementDD]: Finished complementDD. Result has 87 states, 87 states have (on average 153.0) internal successors, (13311), 87 states have internal predecessors, (13311), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 15:22:50,810 INFO L186 Difference]: Start difference. First operand has 307 places, 416 transitions, 3071 flow. Second operand 86 states and 5355 transitions. [2021-12-21 15:22:50,810 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 387 places, 1023 transitions, 10299 flow