/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-SemanticLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/weaver/popl20-more-sum-array-hom.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-wip.dk.repeated-lipton-a802222-m [2022-12-12 16:18:11,105 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-12 16:18:11,106 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-12 16:18:11,138 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-12 16:18:11,139 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-12 16:18:11,141 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-12 16:18:11,143 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-12 16:18:11,145 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-12 16:18:11,146 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-12 16:18:11,146 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-12 16:18:11,147 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-12 16:18:11,148 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-12 16:18:11,148 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-12 16:18:11,149 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-12 16:18:11,150 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-12 16:18:11,151 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-12 16:18:11,151 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-12 16:18:11,152 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-12 16:18:11,153 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-12 16:18:11,155 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-12 16:18:11,159 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-12 16:18:11,164 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-12 16:18:11,168 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-12 16:18:11,169 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-12 16:18:11,179 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-12 16:18:11,180 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-12 16:18:11,180 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-12 16:18:11,180 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-12 16:18:11,181 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-12 16:18:11,181 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-12 16:18:11,181 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-12 16:18:11,182 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-12 16:18:11,182 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-12 16:18:11,183 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-12 16:18:11,183 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-12 16:18:11,184 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-12 16:18:11,184 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-12 16:18:11,184 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-12 16:18:11,184 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-12 16:18:11,185 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-12 16:18:11,185 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-12 16:18:11,196 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-SemanticLbe.epf [2022-12-12 16:18:11,211 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-12 16:18:11,212 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-12 16:18:11,213 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-12 16:18:11,214 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-12 16:18:11,215 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-12 16:18:11,215 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-12 16:18:11,215 INFO L138 SettingsManager]: * Use SBE=true [2022-12-12 16:18:11,215 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-12 16:18:11,216 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-12 16:18:11,216 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-12 16:18:11,216 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-12 16:18:11,216 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-12 16:18:11,217 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-12 16:18:11,217 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-12 16:18:11,217 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-12 16:18:11,217 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-12 16:18:11,217 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-12 16:18:11,217 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-12 16:18:11,217 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-12 16:18:11,217 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-12 16:18:11,217 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-12 16:18:11,217 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-12-12 16:18:11,218 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-12 16:18:11,218 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-12 16:18:11,218 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-12 16:18:11,218 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-12 16:18:11,218 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-12 16:18:11,218 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-12 16:18:11,218 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-12 16:18:11,218 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-12 16:18:11,218 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-12-12 16:18:11,493 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-12 16:18:11,517 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-12 16:18:11,519 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-12 16:18:11,520 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-12 16:18:11,521 INFO L275 PluginConnector]: CDTParser initialized [2022-12-12 16:18:11,522 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/popl20-more-sum-array-hom.wvr.c [2022-12-12 16:18:12,591 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-12 16:18:12,775 INFO L351 CDTParser]: Found 1 translation units. [2022-12-12 16:18:12,776 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-more-sum-array-hom.wvr.c [2022-12-12 16:18:12,797 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/06499ac9a/400cebff6b13443eb3ddfcdb8a76f750/FLAG2076dd0e7 [2022-12-12 16:18:12,812 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/06499ac9a/400cebff6b13443eb3ddfcdb8a76f750 [2022-12-12 16:18:12,814 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-12 16:18:12,815 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-12-12 16:18:12,817 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-12 16:18:12,817 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-12 16:18:12,819 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-12 16:18:12,819 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.12 04:18:12" (1/1) ... [2022-12-12 16:18:12,820 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4ef3d697 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 04:18:12, skipping insertion in model container [2022-12-12 16:18:12,820 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.12 04:18:12" (1/1) ... [2022-12-12 16:18:12,825 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-12 16:18:12,844 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-12 16:18:12,980 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-more-sum-array-hom.wvr.c[2396,2409] [2022-12-12 16:18:12,997 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-12 16:18:13,004 INFO L203 MainTranslator]: Completed pre-run [2022-12-12 16:18:13,034 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-more-sum-array-hom.wvr.c[2396,2409] [2022-12-12 16:18:13,039 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-12 16:18:13,051 INFO L208 MainTranslator]: Completed translation [2022-12-12 16:18:13,051 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 04:18:13 WrapperNode [2022-12-12 16:18:13,053 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-12 16:18:13,054 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-12 16:18:13,054 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-12 16:18:13,054 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-12 16:18:13,059 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 04:18:13" (1/1) ... [2022-12-12 16:18:13,072 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 04:18:13" (1/1) ... [2022-12-12 16:18:13,095 INFO L138 Inliner]: procedures = 25, calls = 34, calls flagged for inlining = 7, calls inlined = 7, statements flattened = 102 [2022-12-12 16:18:13,096 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-12 16:18:13,096 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-12 16:18:13,096 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-12 16:18:13,096 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-12 16:18:13,103 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 04:18:13" (1/1) ... [2022-12-12 16:18:13,103 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 04:18:13" (1/1) ... [2022-12-12 16:18:13,115 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 04:18:13" (1/1) ... [2022-12-12 16:18:13,115 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 04:18:13" (1/1) ... [2022-12-12 16:18:13,123 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 04:18:13" (1/1) ... [2022-12-12 16:18:13,125 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 04:18:13" (1/1) ... [2022-12-12 16:18:13,127 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 04:18:13" (1/1) ... [2022-12-12 16:18:13,127 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 04:18:13" (1/1) ... [2022-12-12 16:18:13,129 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-12 16:18:13,130 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-12 16:18:13,130 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-12 16:18:13,130 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-12 16:18:13,130 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 04:18:13" (1/1) ... [2022-12-12 16:18:13,141 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-12 16:18:13,150 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-12 16:18:13,194 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-12 16:18:13,211 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-12 16:18:13,237 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-12 16:18:13,237 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-12 16:18:13,237 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-12 16:18:13,237 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-12-12 16:18:13,237 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-12-12 16:18:13,238 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-12-12 16:18:13,238 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-12-12 16:18:13,238 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-12-12 16:18:13,238 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-12-12 16:18:13,238 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-12-12 16:18:13,238 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-12 16:18:13,238 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-12-12 16:18:13,238 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-12 16:18:13,238 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-12 16:18:13,238 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-12 16:18:13,240 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2022-12-12 16:18:13,306 INFO L236 CfgBuilder]: Building ICFG [2022-12-12 16:18:13,308 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-12 16:18:13,531 INFO L277 CfgBuilder]: Performing block encoding [2022-12-12 16:18:13,553 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-12 16:18:13,553 INFO L302 CfgBuilder]: Removed 4 assume(true) statements. [2022-12-12 16:18:13,554 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.12 04:18:13 BoogieIcfgContainer [2022-12-12 16:18:13,555 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-12 16:18:13,556 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-12 16:18:13,556 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-12 16:18:13,559 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-12 16:18:13,559 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.12 04:18:12" (1/3) ... [2022-12-12 16:18:13,559 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3d58a4c0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.12 04:18:13, skipping insertion in model container [2022-12-12 16:18:13,559 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 04:18:13" (2/3) ... [2022-12-12 16:18:13,560 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3d58a4c0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.12 04:18:13, skipping insertion in model container [2022-12-12 16:18:13,560 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.12 04:18:13" (3/3) ... [2022-12-12 16:18:13,561 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-more-sum-array-hom.wvr.c [2022-12-12 16:18:13,589 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-12 16:18:13,589 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-12-12 16:18:13,589 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-12-12 16:18:13,703 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-12-12 16:18:13,751 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 146 places, 148 transitions, 320 flow [2022-12-12 16:18:13,830 INFO L130 PetriNetUnfolder]: 12/145 cut-off events. [2022-12-12 16:18:13,830 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-12-12 16:18:13,835 INFO L83 FinitePrefix]: Finished finitePrefix Result has 158 conditions, 145 events. 12/145 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 100 event pairs, 0 based on Foata normal form. 0/132 useless extension candidates. Maximal degree in co-relation 107. Up to 2 conditions per place. [2022-12-12 16:18:13,835 INFO L82 GeneralOperation]: Start removeDead. Operand has 146 places, 148 transitions, 320 flow [2022-12-12 16:18:13,842 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 133 places, 135 transitions, 288 flow [2022-12-12 16:18:13,844 INFO L203 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-12-12 16:18:13,869 INFO L174 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 133 places, 135 transitions, 288 flow [2022-12-12 16:18:13,875 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 133 places, 135 transitions, 288 flow [2022-12-12 16:18:13,911 INFO L130 PetriNetUnfolder]: 12/135 cut-off events. [2022-12-12 16:18:13,911 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-12-12 16:18:13,914 INFO L83 FinitePrefix]: Finished finitePrefix Result has 148 conditions, 135 events. 12/135 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 101 event pairs, 0 based on Foata normal form. 0/123 useless extension candidates. Maximal degree in co-relation 107. Up to 2 conditions per place. [2022-12-12 16:18:13,917 INFO L222 LiptonReduction]: Starting Lipton reduction on Petri net that has 133 places, 135 transitions, 288 flow [2022-12-12 16:18:13,917 INFO L226 LiptonReduction]: Number of co-enabled transitions 1728 [2022-12-12 16:18:18,048 INFO L241 LiptonReduction]: Total number of compositions: 111 [2022-12-12 16:18:18,077 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-12 16:18:18,084 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@1e868848, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, Conditionality=CONDITIONAL_DISJUNCTIVE, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-12 16:18:18,084 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2022-12-12 16:18:18,090 INFO L130 PetriNetUnfolder]: 4/23 cut-off events. [2022-12-12 16:18:18,091 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-12-12 16:18:18,091 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 16:18:18,091 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 16:18:18,092 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-12 16:18:18,095 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 16:18:18,096 INFO L85 PathProgramCache]: Analyzing trace with hash 2027454459, now seen corresponding path program 1 times [2022-12-12 16:18:18,107 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 16:18:18,107 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1594372632] [2022-12-12 16:18:18,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 16:18:18,108 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 16:18:18,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 16:18:18,636 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 16:18:18,637 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 16:18:18,637 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1594372632] [2022-12-12 16:18:18,637 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1594372632] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 16:18:18,637 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 16:18:18,637 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-12 16:18:18,638 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1737951878] [2022-12-12 16:18:18,639 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 16:18:18,644 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-12 16:18:18,644 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 16:18:18,661 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-12 16:18:18,662 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-12 16:18:18,663 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 24 [2022-12-12 16:18:18,664 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 24 transitions, 66 flow. Second operand has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 16:18:18,664 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 16:18:18,664 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 24 [2022-12-12 16:18:18,665 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 16:18:18,773 INFO L130 PetriNetUnfolder]: 360/508 cut-off events. [2022-12-12 16:18:18,774 INFO L131 PetriNetUnfolder]: For 50/50 co-relation queries the response was YES. [2022-12-12 16:18:18,777 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1068 conditions, 508 events. 360/508 cut-off events. For 50/50 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 1619 event pairs, 39 based on Foata normal form. 1/306 useless extension candidates. Maximal degree in co-relation 803. Up to 421 conditions per place. [2022-12-12 16:18:18,781 INFO L137 encePairwiseOnDemand]: 19/24 looper letters, 32 selfloop transitions, 4 changer transitions 1/40 dead transitions. [2022-12-12 16:18:18,781 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 40 transitions, 187 flow [2022-12-12 16:18:18,782 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-12 16:18:18,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-12 16:18:18,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 47 transitions. [2022-12-12 16:18:18,789 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.6527777777777778 [2022-12-12 16:18:18,790 INFO L175 Difference]: Start difference. First operand has 30 places, 24 transitions, 66 flow. Second operand 3 states and 47 transitions. [2022-12-12 16:18:18,791 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 32 places, 40 transitions, 187 flow [2022-12-12 16:18:18,793 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 26 places, 40 transitions, 165 flow, removed 0 selfloop flow, removed 6 redundant places. [2022-12-12 16:18:18,794 INFO L231 Difference]: Finished difference. Result has 27 places, 27 transitions, 80 flow [2022-12-12 16:18:18,796 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=54, PETRI_DIFFERENCE_MINUEND_PLACES=24, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=80, PETRI_PLACES=27, PETRI_TRANSITIONS=27} [2022-12-12 16:18:18,798 INFO L295 CegarLoopForPetriNet]: 30 programPoint places, -3 predicate places. [2022-12-12 16:18:18,798 INFO L495 AbstractCegarLoop]: Abstraction has has 27 places, 27 transitions, 80 flow [2022-12-12 16:18:18,799 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 16:18:18,799 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 16:18:18,799 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 16:18:18,799 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-12 16:18:18,800 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-12 16:18:18,805 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 16:18:18,805 INFO L85 PathProgramCache]: Analyzing trace with hash -1702965316, now seen corresponding path program 1 times [2022-12-12 16:18:18,805 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 16:18:18,806 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [17741877] [2022-12-12 16:18:18,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 16:18:18,806 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 16:18:18,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 16:18:18,955 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 16:18:18,955 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 16:18:18,955 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [17741877] [2022-12-12 16:18:18,956 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [17741877] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 16:18:18,956 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 16:18:18,956 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-12 16:18:18,956 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [174112541] [2022-12-12 16:18:18,956 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 16:18:18,957 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-12 16:18:18,957 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 16:18:18,957 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-12 16:18:18,958 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-12 16:18:18,958 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 2 out of 24 [2022-12-12 16:18:18,958 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 27 places, 27 transitions, 80 flow. Second operand has 5 states, 5 states have (on average 5.8) internal successors, (29), 5 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 16:18:18,958 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 16:18:18,958 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 2 of 24 [2022-12-12 16:18:18,958 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 16:18:19,128 INFO L130 PetriNetUnfolder]: 663/975 cut-off events. [2022-12-12 16:18:19,129 INFO L131 PetriNetUnfolder]: For 287/287 co-relation queries the response was YES. [2022-12-12 16:18:19,130 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2385 conditions, 975 events. 663/975 cut-off events. For 287/287 co-relation queries the response was YES. Maximal size of possible extension queue 72. Compared 4056 event pairs, 179 based on Foata normal form. 38/1003 useless extension candidates. Maximal degree in co-relation 488. Up to 368 conditions per place. [2022-12-12 16:18:19,133 INFO L137 encePairwiseOnDemand]: 18/24 looper letters, 64 selfloop transitions, 5 changer transitions 0/71 dead transitions. [2022-12-12 16:18:19,133 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 71 transitions, 348 flow [2022-12-12 16:18:19,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-12 16:18:19,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-12-12 16:18:19,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 73 transitions. [2022-12-12 16:18:19,135 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.5069444444444444 [2022-12-12 16:18:19,135 INFO L175 Difference]: Start difference. First operand has 27 places, 27 transitions, 80 flow. Second operand 6 states and 73 transitions. [2022-12-12 16:18:19,135 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 32 places, 71 transitions, 348 flow [2022-12-12 16:18:19,136 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 71 transitions, 338 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-12 16:18:19,137 INFO L231 Difference]: Finished difference. Result has 35 places, 31 transitions, 115 flow [2022-12-12 16:18:19,137 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=76, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=115, PETRI_PLACES=35, PETRI_TRANSITIONS=31} [2022-12-12 16:18:19,138 INFO L295 CegarLoopForPetriNet]: 30 programPoint places, 5 predicate places. [2022-12-12 16:18:19,138 INFO L495 AbstractCegarLoop]: Abstraction has has 35 places, 31 transitions, 115 flow [2022-12-12 16:18:19,138 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.8) internal successors, (29), 5 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 16:18:19,138 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 16:18:19,138 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 16:18:19,138 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-12 16:18:19,138 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-12 16:18:19,139 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 16:18:19,139 INFO L85 PathProgramCache]: Analyzing trace with hash -1489304406, now seen corresponding path program 1 times [2022-12-12 16:18:19,139 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 16:18:19,139 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1927826098] [2022-12-12 16:18:19,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 16:18:19,139 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 16:18:19,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 16:18:19,206 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 16:18:19,206 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 16:18:19,206 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1927826098] [2022-12-12 16:18:19,206 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1927826098] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 16:18:19,207 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 16:18:19,207 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-12 16:18:19,207 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1025344543] [2022-12-12 16:18:19,207 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 16:18:19,207 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-12 16:18:19,207 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 16:18:19,208 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-12 16:18:19,208 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-12-12 16:18:19,208 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 2 out of 24 [2022-12-12 16:18:19,208 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 31 transitions, 115 flow. Second operand has 5 states, 5 states have (on average 5.8) internal successors, (29), 5 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 16:18:19,208 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 16:18:19,208 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 2 of 24 [2022-12-12 16:18:19,208 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 16:18:19,323 INFO L130 PetriNetUnfolder]: 483/758 cut-off events. [2022-12-12 16:18:19,323 INFO L131 PetriNetUnfolder]: For 418/444 co-relation queries the response was YES. [2022-12-12 16:18:19,324 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1994 conditions, 758 events. 483/758 cut-off events. For 418/444 co-relation queries the response was YES. Maximal size of possible extension queue 57. Compared 3276 event pairs, 185 based on Foata normal form. 52/775 useless extension candidates. Maximal degree in co-relation 1345. Up to 476 conditions per place. [2022-12-12 16:18:19,327 INFO L137 encePairwiseOnDemand]: 19/24 looper letters, 50 selfloop transitions, 4 changer transitions 0/57 dead transitions. [2022-12-12 16:18:19,327 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 57 transitions, 295 flow [2022-12-12 16:18:19,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-12 16:18:19,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-12-12 16:18:19,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 60 transitions. [2022-12-12 16:18:19,328 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.5 [2022-12-12 16:18:19,328 INFO L175 Difference]: Start difference. First operand has 35 places, 31 transitions, 115 flow. Second operand 5 states and 60 transitions. [2022-12-12 16:18:19,328 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 57 transitions, 295 flow [2022-12-12 16:18:19,330 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 57 transitions, 293 flow, removed 1 selfloop flow, removed 0 redundant places. [2022-12-12 16:18:19,331 INFO L231 Difference]: Finished difference. Result has 41 places, 32 transitions, 132 flow [2022-12-12 16:18:19,331 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=113, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=132, PETRI_PLACES=41, PETRI_TRANSITIONS=32} [2022-12-12 16:18:19,331 INFO L295 CegarLoopForPetriNet]: 30 programPoint places, 11 predicate places. [2022-12-12 16:18:19,331 INFO L495 AbstractCegarLoop]: Abstraction has has 41 places, 32 transitions, 132 flow [2022-12-12 16:18:19,331 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.8) internal successors, (29), 5 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 16:18:19,332 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 16:18:19,332 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 16:18:19,332 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-12-12 16:18:19,332 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-12 16:18:19,332 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 16:18:19,332 INFO L85 PathProgramCache]: Analyzing trace with hash 482585012, now seen corresponding path program 1 times [2022-12-12 16:18:19,332 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 16:18:19,333 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [506357509] [2022-12-12 16:18:19,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 16:18:19,333 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 16:18:19,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 16:18:19,431 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 16:18:19,431 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 16:18:19,432 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [506357509] [2022-12-12 16:18:19,432 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [506357509] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 16:18:19,432 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 16:18:19,432 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-12 16:18:19,432 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [915904298] [2022-12-12 16:18:19,432 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 16:18:19,432 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-12 16:18:19,433 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 16:18:19,433 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-12 16:18:19,433 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-12-12 16:18:19,433 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 1 out of 24 [2022-12-12 16:18:19,433 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 32 transitions, 132 flow. Second operand has 5 states, 5 states have (on average 5.0) internal successors, (25), 5 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 16:18:19,433 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 16:18:19,434 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 1 of 24 [2022-12-12 16:18:19,434 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 16:18:19,559 INFO L130 PetriNetUnfolder]: 483/741 cut-off events. [2022-12-12 16:18:19,559 INFO L131 PetriNetUnfolder]: For 514/538 co-relation queries the response was YES. [2022-12-12 16:18:19,560 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2017 conditions, 741 events. 483/741 cut-off events. For 514/538 co-relation queries the response was YES. Maximal size of possible extension queue 50. Compared 2858 event pairs, 248 based on Foata normal form. 46/785 useless extension candidates. Maximal degree in co-relation 1580. Up to 568 conditions per place. [2022-12-12 16:18:19,562 INFO L137 encePairwiseOnDemand]: 19/24 looper letters, 25 selfloop transitions, 2 changer transitions 26/54 dead transitions. [2022-12-12 16:18:19,562 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 54 transitions, 294 flow [2022-12-12 16:18:19,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-12 16:18:19,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-12-12 16:18:19,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 55 transitions. [2022-12-12 16:18:19,563 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.4583333333333333 [2022-12-12 16:18:19,563 INFO L175 Difference]: Start difference. First operand has 41 places, 32 transitions, 132 flow. Second operand 5 states and 55 transitions. [2022-12-12 16:18:19,563 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 54 transitions, 294 flow [2022-12-12 16:18:19,565 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 54 transitions, 285 flow, removed 2 selfloop flow, removed 2 redundant places. [2022-12-12 16:18:19,566 INFO L231 Difference]: Finished difference. Result has 45 places, 28 transitions, 107 flow [2022-12-12 16:18:19,566 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=123, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=107, PETRI_PLACES=45, PETRI_TRANSITIONS=28} [2022-12-12 16:18:19,566 INFO L295 CegarLoopForPetriNet]: 30 programPoint places, 15 predicate places. [2022-12-12 16:18:19,567 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 28 transitions, 107 flow [2022-12-12 16:18:19,567 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.0) internal successors, (25), 5 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 16:18:19,567 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 16:18:19,567 INFO L214 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] [2022-12-12 16:18:19,567 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-12-12 16:18:19,567 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-12 16:18:19,567 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 16:18:19,568 INFO L85 PathProgramCache]: Analyzing trace with hash -980835168, now seen corresponding path program 1 times [2022-12-12 16:18:19,568 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 16:18:19,568 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1390038204] [2022-12-12 16:18:19,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 16:18:19,568 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 16:18:19,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 16:18:19,657 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-12 16:18:19,658 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 16:18:19,658 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1390038204] [2022-12-12 16:18:19,658 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1390038204] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-12 16:18:19,658 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [192938908] [2022-12-12 16:18:19,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 16:18:19,658 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 16:18:19,659 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-12 16:18:19,661 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-12 16:18:19,665 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-12-12 16:18:19,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 16:18:19,756 INFO L263 TraceCheckSpWp]: Trace formula consists of 217 conjuncts, 8 conjunts are in the unsatisfiable core [2022-12-12 16:18:19,758 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-12 16:18:19,855 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-12 16:18:19,855 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-12 16:18:19,897 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-12 16:18:19,897 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [192938908] provided 1 perfect and 1 imperfect interpolant sequences [2022-12-12 16:18:19,898 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-12-12 16:18:19,898 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6, 6] total 12 [2022-12-12 16:18:19,898 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1029648903] [2022-12-12 16:18:19,898 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 16:18:19,898 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-12 16:18:19,898 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 16:18:19,898 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-12 16:18:19,899 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=116, Unknown=0, NotChecked=0, Total=156 [2022-12-12 16:18:19,899 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 1 out of 24 [2022-12-12 16:18:19,899 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 28 transitions, 107 flow. Second operand has 7 states, 7 states have (on average 4.0) internal successors, (28), 7 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 16:18:19,899 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 16:18:19,899 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 1 of 24 [2022-12-12 16:18:19,899 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 16:18:20,063 INFO L130 PetriNetUnfolder]: 544/799 cut-off events. [2022-12-12 16:18:20,063 INFO L131 PetriNetUnfolder]: For 455/455 co-relation queries the response was YES. [2022-12-12 16:18:20,065 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2213 conditions, 799 events. 544/799 cut-off events. For 455/455 co-relation queries the response was YES. Maximal size of possible extension queue 55. Compared 3018 event pairs, 139 based on Foata normal form. 16/814 useless extension candidates. Maximal degree in co-relation 2191. Up to 410 conditions per place. [2022-12-12 16:18:20,067 INFO L137 encePairwiseOnDemand]: 16/24 looper letters, 58 selfloop transitions, 9 changer transitions 0/68 dead transitions. [2022-12-12 16:18:20,067 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 68 transitions, 379 flow [2022-12-12 16:18:20,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-12 16:18:20,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-12-12 16:18:20,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 66 transitions. [2022-12-12 16:18:20,068 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.39285714285714285 [2022-12-12 16:18:20,068 INFO L175 Difference]: Start difference. First operand has 45 places, 28 transitions, 107 flow. Second operand 7 states and 66 transitions. [2022-12-12 16:18:20,068 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 68 transitions, 379 flow [2022-12-12 16:18:20,070 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 68 transitions, 337 flow, removed 14 selfloop flow, removed 10 redundant places. [2022-12-12 16:18:20,071 INFO L231 Difference]: Finished difference. Result has 38 places, 33 transitions, 142 flow [2022-12-12 16:18:20,071 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=85, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=142, PETRI_PLACES=38, PETRI_TRANSITIONS=33} [2022-12-12 16:18:20,072 INFO L295 CegarLoopForPetriNet]: 30 programPoint places, 8 predicate places. [2022-12-12 16:18:20,072 INFO L495 AbstractCegarLoop]: Abstraction has has 38 places, 33 transitions, 142 flow [2022-12-12 16:18:20,072 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 4.0) internal successors, (28), 7 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 16:18:20,072 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 16:18:20,072 INFO L214 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] [2022-12-12 16:18:20,079 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-12-12 16:18:20,277 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 16:18:20,277 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-12 16:18:20,277 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 16:18:20,277 INFO L85 PathProgramCache]: Analyzing trace with hash 1958639916, now seen corresponding path program 2 times [2022-12-12 16:18:20,278 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 16:18:20,278 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [160538272] [2022-12-12 16:18:20,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 16:18:20,278 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 16:18:20,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 16:18:20,407 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-12 16:18:20,407 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 16:18:20,407 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [160538272] [2022-12-12 16:18:20,407 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [160538272] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-12 16:18:20,407 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [17851736] [2022-12-12 16:18:20,407 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-12 16:18:20,408 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 16:18:20,408 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-12 16:18:20,409 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-12 16:18:20,458 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-12-12 16:18:20,499 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-12 16:18:20,500 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-12 16:18:20,501 INFO L263 TraceCheckSpWp]: Trace formula consists of 217 conjuncts, 8 conjunts are in the unsatisfiable core [2022-12-12 16:18:20,502 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-12 16:18:20,544 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-12 16:18:20,544 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-12 16:18:20,587 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-12 16:18:20,587 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [17851736] provided 1 perfect and 1 imperfect interpolant sequences [2022-12-12 16:18:20,587 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-12-12 16:18:20,587 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6, 6] total 12 [2022-12-12 16:18:20,587 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1675376173] [2022-12-12 16:18:20,587 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 16:18:20,588 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-12 16:18:20,588 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 16:18:20,589 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-12 16:18:20,590 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=116, Unknown=0, NotChecked=0, Total=156 [2022-12-12 16:18:20,590 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 1 out of 24 [2022-12-12 16:18:20,590 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 33 transitions, 142 flow. Second operand has 7 states, 7 states have (on average 4.0) internal successors, (28), 7 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 16:18:20,590 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 16:18:20,590 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 1 of 24 [2022-12-12 16:18:20,590 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 16:18:20,772 INFO L130 PetriNetUnfolder]: 736/1083 cut-off events. [2022-12-12 16:18:20,772 INFO L131 PetriNetUnfolder]: For 1013/1013 co-relation queries the response was YES. [2022-12-12 16:18:20,775 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3402 conditions, 1083 events. 736/1083 cut-off events. For 1013/1013 co-relation queries the response was YES. Maximal size of possible extension queue 77. Compared 4305 event pairs, 221 based on Foata normal form. 12/1094 useless extension candidates. Maximal degree in co-relation 3380. Up to 648 conditions per place. [2022-12-12 16:18:20,781 INFO L137 encePairwiseOnDemand]: 16/24 looper letters, 60 selfloop transitions, 12 changer transitions 0/73 dead transitions. [2022-12-12 16:18:20,781 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 73 transitions, 449 flow [2022-12-12 16:18:20,782 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-12 16:18:20,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-12-12 16:18:20,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 62 transitions. [2022-12-12 16:18:20,782 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.36904761904761907 [2022-12-12 16:18:20,783 INFO L175 Difference]: Start difference. First operand has 38 places, 33 transitions, 142 flow. Second operand 7 states and 62 transitions. [2022-12-12 16:18:20,783 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 73 transitions, 449 flow [2022-12-12 16:18:20,784 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 73 transitions, 414 flow, removed 10 selfloop flow, removed 3 redundant places. [2022-12-12 16:18:20,786 INFO L231 Difference]: Finished difference. Result has 44 places, 38 transitions, 200 flow [2022-12-12 16:18:20,786 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=127, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=200, PETRI_PLACES=44, PETRI_TRANSITIONS=38} [2022-12-12 16:18:20,789 INFO L295 CegarLoopForPetriNet]: 30 programPoint places, 14 predicate places. [2022-12-12 16:18:20,789 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 38 transitions, 200 flow [2022-12-12 16:18:20,789 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 4.0) internal successors, (28), 7 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 16:18:20,789 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 16:18:20,789 INFO L214 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] [2022-12-12 16:18:20,807 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-12-12 16:18:21,007 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2022-12-12 16:18:21,008 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-12 16:18:21,008 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 16:18:21,008 INFO L85 PathProgramCache]: Analyzing trace with hash 613525214, now seen corresponding path program 3 times [2022-12-12 16:18:21,008 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 16:18:21,009 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [17026051] [2022-12-12 16:18:21,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 16:18:21,009 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 16:18:21,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 16:18:21,120 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-12 16:18:21,120 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 16:18:21,120 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [17026051] [2022-12-12 16:18:21,120 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [17026051] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-12 16:18:21,120 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [30554723] [2022-12-12 16:18:21,121 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-12 16:18:21,121 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 16:18:21,121 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-12 16:18:21,122 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-12 16:18:21,124 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-12-12 16:18:21,190 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-12-12 16:18:21,190 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-12 16:18:21,191 INFO L263 TraceCheckSpWp]: Trace formula consists of 217 conjuncts, 8 conjunts are in the unsatisfiable core [2022-12-12 16:18:21,192 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-12 16:18:21,299 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-12 16:18:21,299 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-12 16:18:21,359 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-12 16:18:21,359 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [30554723] provided 1 perfect and 1 imperfect interpolant sequences [2022-12-12 16:18:21,359 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-12-12 16:18:21,359 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6, 6] total 13 [2022-12-12 16:18:21,360 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1476198287] [2022-12-12 16:18:21,360 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 16:18:21,360 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-12 16:18:21,360 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 16:18:21,360 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-12 16:18:21,360 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=135, Unknown=0, NotChecked=0, Total=182 [2022-12-12 16:18:21,361 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 1 out of 24 [2022-12-12 16:18:21,361 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 38 transitions, 200 flow. Second operand has 7 states, 7 states have (on average 4.0) internal successors, (28), 7 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 16:18:21,361 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 16:18:21,361 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 1 of 24 [2022-12-12 16:18:21,361 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 16:18:21,560 INFO L130 PetriNetUnfolder]: 840/1246 cut-off events. [2022-12-12 16:18:21,560 INFO L131 PetriNetUnfolder]: For 2207/2207 co-relation queries the response was YES. [2022-12-12 16:18:21,562 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4494 conditions, 1246 events. 840/1246 cut-off events. For 2207/2207 co-relation queries the response was YES. Maximal size of possible extension queue 93. Compared 5229 event pairs, 211 based on Foata normal form. 16/1261 useless extension candidates. Maximal degree in co-relation 4469. Up to 612 conditions per place. [2022-12-12 16:18:21,566 INFO L137 encePairwiseOnDemand]: 16/24 looper letters, 62 selfloop transitions, 19 changer transitions 0/82 dead transitions. [2022-12-12 16:18:21,566 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 82 transitions, 561 flow [2022-12-12 16:18:21,577 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-12 16:18:21,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-12-12 16:18:21,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 69 transitions. [2022-12-12 16:18:21,578 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.4107142857142857 [2022-12-12 16:18:21,578 INFO L175 Difference]: Start difference. First operand has 44 places, 38 transitions, 200 flow. Second operand 7 states and 69 transitions. [2022-12-12 16:18:21,578 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 82 transitions, 561 flow [2022-12-12 16:18:21,581 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 82 transitions, 520 flow, removed 12 selfloop flow, removed 3 redundant places. [2022-12-12 16:18:21,582 INFO L231 Difference]: Finished difference. Result has 50 places, 46 transitions, 310 flow [2022-12-12 16:18:21,582 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=182, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=310, PETRI_PLACES=50, PETRI_TRANSITIONS=46} [2022-12-12 16:18:21,582 INFO L295 CegarLoopForPetriNet]: 30 programPoint places, 20 predicate places. [2022-12-12 16:18:21,583 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 46 transitions, 310 flow [2022-12-12 16:18:21,583 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 4.0) internal successors, (28), 7 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 16:18:21,583 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 16:18:21,583 INFO L214 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] [2022-12-12 16:18:21,602 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-12-12 16:18:21,799 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 16:18:21,800 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-12 16:18:21,800 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 16:18:21,800 INFO L85 PathProgramCache]: Analyzing trace with hash 1717854792, now seen corresponding path program 4 times [2022-12-12 16:18:21,800 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 16:18:21,800 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [194515331] [2022-12-12 16:18:21,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 16:18:21,800 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 16:18:21,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 16:18:21,908 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-12 16:18:21,908 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 16:18:21,909 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [194515331] [2022-12-12 16:18:21,910 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [194515331] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-12 16:18:21,910 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1504578830] [2022-12-12 16:18:21,910 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-12-12 16:18:21,910 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 16:18:21,910 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-12 16:18:21,911 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-12 16:18:21,913 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-12-12 16:18:21,970 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-12-12 16:18:21,970 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-12 16:18:21,971 INFO L263 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 6 conjunts are in the unsatisfiable core [2022-12-12 16:18:21,972 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-12 16:18:22,029 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-12 16:18:22,029 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-12 16:18:22,080 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-12 16:18:22,080 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1504578830] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-12 16:18:22,080 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-12 16:18:22,080 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7, 7] total 13 [2022-12-12 16:18:22,080 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1087486330] [2022-12-12 16:18:22,081 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-12 16:18:22,081 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-12-12 16:18:22,081 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 16:18:22,081 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-12-12 16:18:22,081 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2022-12-12 16:18:22,082 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 0 out of 24 [2022-12-12 16:18:22,082 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 46 transitions, 310 flow. Second operand has 13 states, 13 states have (on average 3.0) internal successors, (39), 13 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 16:18:22,082 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 16:18:22,082 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 0 of 24 [2022-12-12 16:18:22,082 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 16:18:22,434 INFO L130 PetriNetUnfolder]: 869/1312 cut-off events. [2022-12-12 16:18:22,434 INFO L131 PetriNetUnfolder]: For 3825/3825 co-relation queries the response was YES. [2022-12-12 16:18:22,437 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5202 conditions, 1312 events. 869/1312 cut-off events. For 3825/3825 co-relation queries the response was YES. Maximal size of possible extension queue 78. Compared 5349 event pairs, 30 based on Foata normal form. 18/1329 useless extension candidates. Maximal degree in co-relation 5174. Up to 590 conditions per place. [2022-12-12 16:18:22,442 INFO L137 encePairwiseOnDemand]: 15/24 looper letters, 80 selfloop transitions, 43 changer transitions 0/123 dead transitions. [2022-12-12 16:18:22,442 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 123 transitions, 1016 flow [2022-12-12 16:18:22,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-12-12 16:18:22,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-12-12 16:18:22,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 87 transitions. [2022-12-12 16:18:22,444 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.32954545454545453 [2022-12-12 16:18:22,444 INFO L175 Difference]: Start difference. First operand has 50 places, 46 transitions, 310 flow. Second operand 11 states and 87 transitions. [2022-12-12 16:18:22,444 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 123 transitions, 1016 flow [2022-12-12 16:18:22,450 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 123 transitions, 977 flow, removed 8 selfloop flow, removed 3 redundant places. [2022-12-12 16:18:22,452 INFO L231 Difference]: Finished difference. Result has 63 places, 72 transitions, 673 flow [2022-12-12 16:18:22,452 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=288, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=673, PETRI_PLACES=63, PETRI_TRANSITIONS=72} [2022-12-12 16:18:22,453 INFO L295 CegarLoopForPetriNet]: 30 programPoint places, 33 predicate places. [2022-12-12 16:18:22,453 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 72 transitions, 673 flow [2022-12-12 16:18:22,453 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.0) internal successors, (39), 13 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 16:18:22,453 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 16:18:22,453 INFO L214 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] [2022-12-12 16:18:22,462 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-12-12 16:18:22,659 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 16:18:22,659 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-12 16:18:22,660 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 16:18:22,660 INFO L85 PathProgramCache]: Analyzing trace with hash -1064539182, now seen corresponding path program 5 times [2022-12-12 16:18:22,660 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 16:18:22,660 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1367910327] [2022-12-12 16:18:22,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 16:18:22,660 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 16:18:22,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 16:18:22,768 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-12 16:18:22,769 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 16:18:22,769 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1367910327] [2022-12-12 16:18:22,769 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1367910327] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-12 16:18:22,769 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1511068927] [2022-12-12 16:18:22,769 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-12-12 16:18:22,769 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 16:18:22,770 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-12 16:18:22,784 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) [2022-12-12 16:18:22,785 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-12-12 16:18:22,866 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-12 16:18:22,866 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-12 16:18:22,867 INFO L263 TraceCheckSpWp]: Trace formula consists of 217 conjuncts, 6 conjunts are in the unsatisfiable core [2022-12-12 16:18:22,868 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-12 16:18:22,924 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-12 16:18:22,924 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-12 16:18:22,973 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-12 16:18:22,973 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1511068927] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-12 16:18:22,973 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-12 16:18:22,973 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7, 7] total 16 [2022-12-12 16:18:22,973 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [639792549] [2022-12-12 16:18:22,973 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-12 16:18:22,975 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-12-12 16:18:22,978 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 16:18:22,978 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-12-12 16:18:22,980 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=187, Unknown=0, NotChecked=0, Total=240 [2022-12-12 16:18:22,980 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 0 out of 24 [2022-12-12 16:18:22,982 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 72 transitions, 673 flow. Second operand has 16 states, 16 states have (on average 3.0) internal successors, (48), 16 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 16:18:22,982 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 16:18:22,982 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 0 of 24 [2022-12-12 16:18:22,982 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 16:18:23,348 INFO L130 PetriNetUnfolder]: 1230/1853 cut-off events. [2022-12-12 16:18:23,348 INFO L131 PetriNetUnfolder]: For 8979/8979 co-relation queries the response was YES. [2022-12-12 16:18:23,353 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8613 conditions, 1853 events. 1230/1853 cut-off events. For 8979/8979 co-relation queries the response was YES. Maximal size of possible extension queue 115. Compared 8097 event pairs, 194 based on Foata normal form. 26/1878 useless extension candidates. Maximal degree in co-relation 8579. Up to 713 conditions per place. [2022-12-12 16:18:23,363 INFO L137 encePairwiseOnDemand]: 14/24 looper letters, 102 selfloop transitions, 60 changer transitions 0/162 dead transitions. [2022-12-12 16:18:23,363 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 162 transitions, 1547 flow [2022-12-12 16:18:23,364 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-12-12 16:18:23,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-12-12 16:18:23,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 96 transitions. [2022-12-12 16:18:23,365 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.4 [2022-12-12 16:18:23,365 INFO L175 Difference]: Start difference. First operand has 63 places, 72 transitions, 673 flow. Second operand 10 states and 96 transitions. [2022-12-12 16:18:23,365 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 162 transitions, 1547 flow [2022-12-12 16:18:23,382 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 162 transitions, 1498 flow, removed 23 selfloop flow, removed 2 redundant places. [2022-12-12 16:18:23,384 INFO L231 Difference]: Finished difference. Result has 75 places, 100 transitions, 1119 flow [2022-12-12 16:18:23,384 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=642, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1119, PETRI_PLACES=75, PETRI_TRANSITIONS=100} [2022-12-12 16:18:23,385 INFO L295 CegarLoopForPetriNet]: 30 programPoint places, 45 predicate places. [2022-12-12 16:18:23,385 INFO L495 AbstractCegarLoop]: Abstraction has has 75 places, 100 transitions, 1119 flow [2022-12-12 16:18:23,385 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 3.0) internal successors, (48), 16 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 16:18:23,385 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 16:18:23,385 INFO L214 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] [2022-12-12 16:18:23,402 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-12-12 16:18:23,590 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 16:18:23,591 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-12 16:18:23,591 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 16:18:23,591 INFO L85 PathProgramCache]: Analyzing trace with hash 1093310952, now seen corresponding path program 6 times [2022-12-12 16:18:23,591 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 16:18:23,591 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1754714135] [2022-12-12 16:18:23,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 16:18:23,591 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 16:18:23,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 16:18:23,678 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-12 16:18:23,678 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 16:18:23,678 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1754714135] [2022-12-12 16:18:23,678 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1754714135] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-12 16:18:23,678 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1595136966] [2022-12-12 16:18:23,679 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-12-12 16:18:23,679 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 16:18:23,679 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-12 16:18:23,680 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) [2022-12-12 16:18:23,682 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-12-12 16:18:23,835 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2022-12-12 16:18:23,835 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-12 16:18:23,836 INFO L263 TraceCheckSpWp]: Trace formula consists of 217 conjuncts, 8 conjunts are in the unsatisfiable core [2022-12-12 16:18:23,844 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-12 16:18:23,921 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-12 16:18:23,921 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-12 16:18:23,986 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-12 16:18:23,986 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1595136966] provided 1 perfect and 1 imperfect interpolant sequences [2022-12-12 16:18:23,986 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-12-12 16:18:23,986 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6, 6] total 14 [2022-12-12 16:18:23,986 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2055960124] [2022-12-12 16:18:23,987 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 16:18:23,987 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-12 16:18:23,987 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 16:18:23,987 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-12 16:18:23,987 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=157, Unknown=0, NotChecked=0, Total=210 [2022-12-12 16:18:23,987 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 1 out of 24 [2022-12-12 16:18:23,987 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 100 transitions, 1119 flow. Second operand has 7 states, 7 states have (on average 4.0) internal successors, (28), 7 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 16:18:23,988 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 16:18:23,988 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 1 of 24 [2022-12-12 16:18:23,988 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 16:18:24,233 INFO L130 PetriNetUnfolder]: 1158/1728 cut-off events. [2022-12-12 16:18:24,233 INFO L131 PetriNetUnfolder]: For 12420/12459 co-relation queries the response was YES. [2022-12-12 16:18:24,241 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9329 conditions, 1728 events. 1158/1728 cut-off events. For 12420/12459 co-relation queries the response was YES. Maximal size of possible extension queue 117. Compared 7460 event pairs, 261 based on Foata normal form. 42/1762 useless extension candidates. Maximal degree in co-relation 9289. Up to 918 conditions per place. [2022-12-12 16:18:24,255 INFO L137 encePairwiseOnDemand]: 16/24 looper letters, 72 selfloop transitions, 55 changer transitions 0/134 dead transitions. [2022-12-12 16:18:24,255 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 134 transitions, 1571 flow [2022-12-12 16:18:24,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-12 16:18:24,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-12-12 16:18:24,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 63 transitions. [2022-12-12 16:18:24,256 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.375 [2022-12-12 16:18:24,256 INFO L175 Difference]: Start difference. First operand has 75 places, 100 transitions, 1119 flow. Second operand 7 states and 63 transitions. [2022-12-12 16:18:24,256 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 134 transitions, 1571 flow [2022-12-12 16:18:24,288 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 134 transitions, 1511 flow, removed 6 selfloop flow, removed 3 redundant places. [2022-12-12 16:18:24,291 INFO L231 Difference]: Finished difference. Result has 80 places, 106 transitions, 1296 flow [2022-12-12 16:18:24,292 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=1066, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=100, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1296, PETRI_PLACES=80, PETRI_TRANSITIONS=106} [2022-12-12 16:18:24,292 INFO L295 CegarLoopForPetriNet]: 30 programPoint places, 50 predicate places. [2022-12-12 16:18:24,292 INFO L495 AbstractCegarLoop]: Abstraction has has 80 places, 106 transitions, 1296 flow [2022-12-12 16:18:24,292 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 4.0) internal successors, (28), 7 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 16:18:24,293 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 16:18:24,293 INFO L214 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] [2022-12-12 16:18:24,301 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-12-12 16:18:24,498 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 16:18:24,499 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-12 16:18:24,499 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 16:18:24,499 INFO L85 PathProgramCache]: Analyzing trace with hash -302388184, now seen corresponding path program 1 times [2022-12-12 16:18:24,499 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 16:18:24,499 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [542665507] [2022-12-12 16:18:24,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 16:18:24,500 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 16:18:24,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 16:18:24,554 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-12 16:18:24,555 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 16:18:24,555 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [542665507] [2022-12-12 16:18:24,555 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [542665507] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-12 16:18:24,555 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [528504845] [2022-12-12 16:18:24,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 16:18:24,555 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 16:18:24,555 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-12 16:18:24,578 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-12 16:18:24,579 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-12-12 16:18:24,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 16:18:24,661 INFO L263 TraceCheckSpWp]: Trace formula consists of 217 conjuncts, 6 conjunts are in the unsatisfiable core [2022-12-12 16:18:24,662 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-12 16:18:24,682 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-12 16:18:24,683 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-12 16:18:24,703 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-12 16:18:24,703 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [528504845] provided 1 perfect and 1 imperfect interpolant sequences [2022-12-12 16:18:24,703 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-12-12 16:18:24,703 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4, 4] total 8 [2022-12-12 16:18:24,703 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [944027152] [2022-12-12 16:18:24,703 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 16:18:24,703 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-12 16:18:24,704 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 16:18:24,704 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-12 16:18:24,704 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2022-12-12 16:18:24,704 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 2 out of 24 [2022-12-12 16:18:24,704 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 106 transitions, 1296 flow. Second operand has 5 states, 5 states have (on average 6.0) internal successors, (30), 5 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 16:18:24,704 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 16:18:24,705 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 2 of 24 [2022-12-12 16:18:24,705 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 16:18:24,858 INFO L130 PetriNetUnfolder]: 963/1420 cut-off events. [2022-12-12 16:18:24,859 INFO L131 PetriNetUnfolder]: For 11655/11882 co-relation queries the response was YES. [2022-12-12 16:18:24,864 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7881 conditions, 1420 events. 963/1420 cut-off events. For 11655/11882 co-relation queries the response was YES. Maximal size of possible extension queue 119. Compared 6223 event pairs, 278 based on Foata normal form. 224/1566 useless extension candidates. Maximal degree in co-relation 7838. Up to 1101 conditions per place. [2022-12-12 16:18:24,872 INFO L137 encePairwiseOnDemand]: 19/24 looper letters, 105 selfloop transitions, 11 changer transitions 0/129 dead transitions. [2022-12-12 16:18:24,872 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 129 transitions, 1751 flow [2022-12-12 16:18:24,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-12 16:18:24,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-12-12 16:18:24,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 44 transitions. [2022-12-12 16:18:24,873 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.36666666666666664 [2022-12-12 16:18:24,873 INFO L175 Difference]: Start difference. First operand has 80 places, 106 transitions, 1296 flow. Second operand 5 states and 44 transitions. [2022-12-12 16:18:24,873 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 129 transitions, 1751 flow [2022-12-12 16:18:24,890 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 129 transitions, 1624 flow, removed 21 selfloop flow, removed 4 redundant places. [2022-12-12 16:18:24,892 INFO L231 Difference]: Finished difference. Result has 81 places, 107 transitions, 1226 flow [2022-12-12 16:18:24,892 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=1181, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=106, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=95, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1226, PETRI_PLACES=81, PETRI_TRANSITIONS=107} [2022-12-12 16:18:24,892 INFO L295 CegarLoopForPetriNet]: 30 programPoint places, 51 predicate places. [2022-12-12 16:18:24,893 INFO L495 AbstractCegarLoop]: Abstraction has has 81 places, 107 transitions, 1226 flow [2022-12-12 16:18:24,893 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.0) internal successors, (30), 5 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 16:18:24,893 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 16:18:24,893 INFO L214 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] [2022-12-12 16:18:24,922 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-12-12 16:18:25,103 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 16:18:25,104 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-12 16:18:25,105 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 16:18:25,105 INFO L85 PathProgramCache]: Analyzing trace with hash 1716387651, now seen corresponding path program 1 times [2022-12-12 16:18:25,105 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 16:18:25,105 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1913131453] [2022-12-12 16:18:25,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 16:18:25,105 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 16:18:25,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 16:18:25,935 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 16:18:25,935 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 16:18:25,935 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1913131453] [2022-12-12 16:18:25,935 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1913131453] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-12 16:18:25,935 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [209772602] [2022-12-12 16:18:25,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 16:18:25,936 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 16:18:25,936 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-12 16:18:25,939 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-12 16:18:25,939 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-12-12 16:18:26,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 16:18:26,033 INFO L263 TraceCheckSpWp]: Trace formula consists of 222 conjuncts, 50 conjunts are in the unsatisfiable core [2022-12-12 16:18:26,035 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-12 16:18:26,105 INFO L350 Elim1Store]: Elim1 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 [2022-12-12 16:18:26,161 INFO L350 Elim1Store]: Elim1 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 [2022-12-12 16:18:26,403 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-12 16:18:26,405 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-12-12 16:18:26,464 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-12 16:18:26,465 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-12-12 16:18:26,515 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-12 16:18:26,515 INFO L350 Elim1Store]: Elim1 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 24 treesize of output 20 [2022-12-12 16:18:26,671 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 16:18:26,671 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-12 16:18:28,836 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_437 (Array Int Int)) (~M~0 Int)) (or (= (mod (+ (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_437) c_~A~0.base) (+ c_~A~0.offset (* ~M~0 4))) c_~sum3~0 c_~sum2~0) 4294967296) (mod c_~sum1~0 4294967296)) (not (< ~M~0 c_~N~0)) (< (+ ~M~0 1) c_~N~0))) is different from false [2022-12-12 16:18:30,922 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_436 (Array Int Int)) (v_ArrVal_437 (Array Int Int)) (~M~0 Int)) (or (= (mod c_~sum1~0 4294967296) (mod (+ c_~sum3~0 (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_436) |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_437) c_~A~0.base) (+ c_~A~0.offset (* ~M~0 4))) c_~sum2~0) 4294967296)) (not (< ~M~0 c_~N~0)) (< (+ ~M~0 1) c_~N~0))) is different from false [2022-12-12 16:18:32,967 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_436 (Array Int Int)) (v_ArrVal_437 (Array Int Int)) (~M~0 Int)) (or (not (< ~M~0 c_~N~0)) (= (mod (+ (select (select |c_#memory_int| c_~A~0.base) (+ c_~A~0.offset (* c_thread1Thread1of1ForFork1_~i~0 4))) c_~sum1~0) 4294967296) (mod (+ c_~sum3~0 (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_436) |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_437) c_~A~0.base) (+ c_~A~0.offset (* ~M~0 4))) c_~sum2~0) 4294967296)) (< (+ ~M~0 1) c_~N~0))) is different from false [2022-12-12 16:18:35,003 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_436 (Array Int Int)) (v_ArrVal_437 (Array Int Int)) (~M~0 Int)) (or (= (mod (+ (select (select |c_#memory_int| c_~A~0.base) c_~A~0.offset) c_~sum1~0) 4294967296) (mod (+ c_~sum3~0 (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_436) |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_437) c_~A~0.base) (+ c_~A~0.offset (* ~M~0 4))) c_~sum2~0) 4294967296)) (not (< ~M~0 c_~N~0)) (< (+ ~M~0 1) c_~N~0))) is different from false [2022-12-12 16:18:37,107 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-12 16:18:37,107 INFO L350 Elim1Store]: Elim1 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 60 treesize of output 49 [2022-12-12 16:18:37,122 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-12 16:18:37,123 INFO L350 Elim1Store]: Elim1 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 990 treesize of output 904 [2022-12-12 16:18:37,131 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 894 treesize of output 798 [2022-12-12 16:18:37,140 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 798 treesize of output 750 [2022-12-12 16:18:37,154 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-12 16:18:37,154 INFO L350 Elim1Store]: Elim1 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 750 treesize of output 704 [2022-12-12 16:18:43,676 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2022-12-12 16:19:31,145 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts.