./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/weaver/popl20-prod-cons.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version aef121e0 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd104161-401f-48d8-8a40-88df5c6549f9/bin/uautomizer-w2VwFs6gM0/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd104161-401f-48d8-8a40-88df5c6549f9/bin/uautomizer-w2VwFs6gM0/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd104161-401f-48d8-8a40-88df5c6549f9/bin/uautomizer-w2VwFs6gM0/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd104161-401f-48d8-8a40-88df5c6549f9/bin/uautomizer-w2VwFs6gM0/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/popl20-prod-cons.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd104161-401f-48d8-8a40-88df5c6549f9/bin/uautomizer-w2VwFs6gM0/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd104161-401f-48d8-8a40-88df5c6549f9/bin/uautomizer-w2VwFs6gM0 --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash f9b434f3343269d91303305376bff127738dc22172486554888e346753333fd7 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-aef121e [2021-11-22 15:00:20,045 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-22 15:00:20,047 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-22 15:00:20,100 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-22 15:00:20,100 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-22 15:00:20,106 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-22 15:00:20,108 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-22 15:00:20,112 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-22 15:00:20,116 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-22 15:00:20,124 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-22 15:00:20,125 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-22 15:00:20,128 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-22 15:00:20,128 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-22 15:00:20,133 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-22 15:00:20,136 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-22 15:00:20,144 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-22 15:00:20,147 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-22 15:00:20,149 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-22 15:00:20,152 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-22 15:00:20,158 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-22 15:00:20,163 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-22 15:00:20,165 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-22 15:00:20,169 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-22 15:00:20,170 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-22 15:00:20,178 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-22 15:00:20,178 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-22 15:00:20,179 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-22 15:00:20,181 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-22 15:00:20,182 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-22 15:00:20,184 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-22 15:00:20,185 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-22 15:00:20,186 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-22 15:00:20,188 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-22 15:00:20,190 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-22 15:00:20,192 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-22 15:00:20,192 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-22 15:00:20,193 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-22 15:00:20,194 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-22 15:00:20,194 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-22 15:00:20,195 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-22 15:00:20,196 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-22 15:00:20,197 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd104161-401f-48d8-8a40-88df5c6549f9/bin/uautomizer-w2VwFs6gM0/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-11-22 15:00:20,251 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-22 15:00:20,251 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-22 15:00:20,252 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-22 15:00:20,252 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-22 15:00:20,254 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-22 15:00:20,255 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-22 15:00:20,255 INFO L138 SettingsManager]: * Use SBE=true [2021-11-22 15:00:20,255 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-22 15:00:20,256 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-22 15:00:20,256 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-22 15:00:20,257 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-22 15:00:20,258 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-22 15:00:20,258 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-22 15:00:20,258 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-22 15:00:20,258 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-22 15:00:20,259 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-22 15:00:20,259 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-22 15:00:20,259 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-22 15:00:20,259 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-22 15:00:20,260 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-22 15:00:20,260 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-22 15:00:20,260 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-22 15:00:20,260 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-22 15:00:20,261 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-22 15:00:20,261 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-22 15:00:20,261 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-22 15:00:20,262 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-22 15:00:20,262 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-22 15:00:20,262 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-22 15:00:20,264 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-22 15:00:20,264 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-22 15:00:20,265 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-22 15:00:20,265 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:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd104161-401f-48d8-8a40-88df5c6549f9/bin/uautomizer-w2VwFs6gM0/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd104161-401f-48d8-8a40-88df5c6549f9/bin/uautomizer-w2VwFs6gM0 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f9b434f3343269d91303305376bff127738dc22172486554888e346753333fd7 [2021-11-22 15:00:20,591 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-22 15:00:20,621 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-22 15:00:20,625 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-22 15:00:20,627 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-22 15:00:20,628 INFO L275 PluginConnector]: CDTParser initialized [2021-11-22 15:00:20,629 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd104161-401f-48d8-8a40-88df5c6549f9/bin/uautomizer-w2VwFs6gM0/../../sv-benchmarks/c/weaver/popl20-prod-cons.wvr.c [2021-11-22 15:00:20,709 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd104161-401f-48d8-8a40-88df5c6549f9/bin/uautomizer-w2VwFs6gM0/data/c2e7465d9/2d121df6a6c8402382d6975d62fa9a1d/FLAGacba3a262 [2021-11-22 15:00:21,225 INFO L306 CDTParser]: Found 1 translation units. [2021-11-22 15:00:21,226 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd104161-401f-48d8-8a40-88df5c6549f9/sv-benchmarks/c/weaver/popl20-prod-cons.wvr.c [2021-11-22 15:00:21,236 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd104161-401f-48d8-8a40-88df5c6549f9/bin/uautomizer-w2VwFs6gM0/data/c2e7465d9/2d121df6a6c8402382d6975d62fa9a1d/FLAGacba3a262 [2021-11-22 15:00:21,573 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd104161-401f-48d8-8a40-88df5c6549f9/bin/uautomizer-w2VwFs6gM0/data/c2e7465d9/2d121df6a6c8402382d6975d62fa9a1d [2021-11-22 15:00:21,578 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-22 15:00:21,581 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-22 15:00:21,582 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-22 15:00:21,583 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-22 15:00:21,593 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-22 15:00:21,595 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 03:00:21" (1/1) ... [2021-11-22 15:00:21,597 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2e746a83 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:00:21, skipping insertion in model container [2021-11-22 15:00:21,598 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 03:00:21" (1/1) ... [2021-11-22 15:00:21,604 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-22 15:00:21,636 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-22 15:00:21,855 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd104161-401f-48d8-8a40-88df5c6549f9/sv-benchmarks/c/weaver/popl20-prod-cons.wvr.c[3056,3069] [2021-11-22 15:00:21,864 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-22 15:00:21,874 INFO L203 MainTranslator]: Completed pre-run [2021-11-22 15:00:21,903 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd104161-401f-48d8-8a40-88df5c6549f9/sv-benchmarks/c/weaver/popl20-prod-cons.wvr.c[3056,3069] [2021-11-22 15:00:21,907 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-22 15:00:21,925 INFO L208 MainTranslator]: Completed translation [2021-11-22 15:00:21,926 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:00:21 WrapperNode [2021-11-22 15:00:21,926 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-22 15:00:21,928 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-22 15:00:21,928 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-22 15:00:21,928 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-22 15:00:21,938 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:00:21" (1/1) ... [2021-11-22 15:00:21,949 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:00:21" (1/1) ... [2021-11-22 15:00:21,980 INFO L137 Inliner]: procedures = 25, calls = 50, calls flagged for inlining = 10, calls inlined = 10, statements flattened = 166 [2021-11-22 15:00:21,981 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-22 15:00:21,982 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-22 15:00:21,982 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-22 15:00:21,982 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-22 15:00:21,992 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:00:21" (1/1) ... [2021-11-22 15:00:21,993 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:00:21" (1/1) ... [2021-11-22 15:00:21,996 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:00:21" (1/1) ... [2021-11-22 15:00:21,997 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:00:21" (1/1) ... [2021-11-22 15:00:22,005 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:00:21" (1/1) ... [2021-11-22 15:00:22,010 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:00:21" (1/1) ... [2021-11-22 15:00:22,012 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:00:21" (1/1) ... [2021-11-22 15:00:22,015 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-22 15:00:22,028 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-22 15:00:22,028 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-22 15:00:22,029 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-22 15:00:22,030 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:00:21" (1/1) ... [2021-11-22 15:00:22,039 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-22 15:00:22,053 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd104161-401f-48d8-8a40-88df5c6549f9/bin/uautomizer-w2VwFs6gM0/z3 [2021-11-22 15:00:22,079 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd104161-401f-48d8-8a40-88df5c6549f9/bin/uautomizer-w2VwFs6gM0/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-22 15:00:22,100 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd104161-401f-48d8-8a40-88df5c6549f9/bin/uautomizer-w2VwFs6gM0/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-22 15:00:22,134 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-22 15:00:22,135 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-22 15:00:22,135 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-22 15:00:22,135 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-22 15:00:22,136 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-11-22 15:00:22,136 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-11-22 15:00:22,136 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-11-22 15:00:22,136 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-11-22 15:00:22,137 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2021-11-22 15:00:22,137 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2021-11-22 15:00:22,138 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-22 15:00:22,138 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-11-22 15:00:22,138 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-11-22 15:00:22,139 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-22 15:00:22,139 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-22 15:00:22,139 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-22 15:00:22,139 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-22 15:00:22,141 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-11-22 15:00:22,287 INFO L236 CfgBuilder]: Building ICFG [2021-11-22 15:00:22,289 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-22 15:00:22,578 INFO L277 CfgBuilder]: Performing block encoding [2021-11-22 15:00:22,742 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-22 15:00:22,743 INFO L301 CfgBuilder]: Removed 3 assume(true) statements. [2021-11-22 15:00:22,759 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 03:00:22 BoogieIcfgContainer [2021-11-22 15:00:22,759 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-22 15:00:22,761 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-22 15:00:22,761 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-22 15:00:22,770 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-22 15:00:22,770 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 03:00:21" (1/3) ... [2021-11-22 15:00:22,771 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7bdc9080 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 03:00:22, skipping insertion in model container [2021-11-22 15:00:22,772 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:00:21" (2/3) ... [2021-11-22 15:00:22,773 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7bdc9080 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 03:00:22, skipping insertion in model container [2021-11-22 15:00:22,773 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 03:00:22" (3/3) ... [2021-11-22 15:00:22,774 INFO L111 eAbstractionObserver]: Analyzing ICFG popl20-prod-cons.wvr.c [2021-11-22 15:00:22,786 WARN L149 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-11-22 15:00:22,793 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-22 15:00:22,793 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-22 15:00:22,793 INFO L513 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-11-22 15:00:22,832 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_~w~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-22 15:00:22,832 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_~w~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-22 15:00:22,833 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_~w~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-22 15:00:22,833 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_~w~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-22 15:00:22,833 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_~w~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-22 15:00:22,833 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_~w~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-22 15:00:22,834 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-22 15:00:22,834 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-22 15:00:22,834 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-22 15:00:22,834 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-22 15:00:22,834 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_~cond~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-22 15:00:22,835 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_~cond~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-22 15:00:22,835 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_~cond~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-22 15:00:22,835 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_~cond~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-22 15:00:22,835 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_~cond~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-22 15:00:22,836 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_~cond~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-22 15:00:22,836 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-22 15:00:22,836 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-22 15:00:22,836 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-22 15:00:22,836 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-22 15:00:22,837 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-22 15:00:22,837 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-22 15:00:22,837 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-22 15:00:22,837 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-22 15:00:22,838 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_~w~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-22 15:00:22,838 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-22 15:00:22,838 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_~w~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-22 15:00:22,838 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-22 15:00:22,839 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-22 15:00:22,839 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_~w~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-22 15:00:22,839 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-22 15:00:22,839 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_~w~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-22 15:00:22,839 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-22 15:00:22,840 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-22 15:00:22,840 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_~temp~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-22 15:00:22,840 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_~temp~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-22 15:00:22,840 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_~cond~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-22 15:00:22,841 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_~cond~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-22 15:00:22,841 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_~cond~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-22 15:00:22,841 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_~cond~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-22 15:00:22,841 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_~cond~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-22 15:00:22,842 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_~cond~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-22 15:00:22,842 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-22 15:00:22,842 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-22 15:00:22,842 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-22 15:00:22,842 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-22 15:00:22,843 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~mem4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-22 15:00:22,843 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-22 15:00:22,843 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~post5#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-22 15:00:22,843 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_~temp~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-22 15:00:22,843 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-22 15:00:22,844 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~mem4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-22 15:00:22,844 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-22 15:00:22,844 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~post5#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-22 15:00:22,844 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_~temp~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-22 15:00:22,844 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-22 15:00:22,845 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_~temp~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-22 15:00:22,845 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_~temp~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-22 15:00:22,845 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_~cond~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-22 15:00:22,845 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_~cond~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-22 15:00:22,846 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-22 15:00:22,846 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-22 15:00:22,846 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-22 15:00:22,847 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-22 15:00:22,850 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-22 15:00:22,850 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-22 15:00:22,852 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-22 15:00:22,852 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-22 15:00:22,852 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-22 15:00:22,852 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_~w~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-22 15:00:22,852 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-22 15:00:22,853 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-22 15:00:22,853 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-22 15:00:22,853 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_~cond~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-22 15:00:22,853 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-22 15:00:22,854 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_~cond~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-22 15:00:22,855 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_~temp~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-22 15:00:22,855 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~post5#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-22 15:00:22,855 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-22 15:00:22,855 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-22 15:00:22,855 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~mem4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-22 15:00:22,856 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-22 15:00:22,856 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-22 15:00:22,860 INFO L148 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2021-11-22 15:00:22,916 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-22 15:00:22,925 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-22 15:00:22,926 INFO L340 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-11-22 15:00:22,944 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 155 places, 156 transitions, 336 flow [2021-11-22 15:00:23,033 INFO L129 PetriNetUnfolder]: 11/153 cut-off events. [2021-11-22 15:00:23,033 INFO L130 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2021-11-22 15:00:23,038 INFO L84 FinitePrefix]: Finished finitePrefix Result has 166 conditions, 153 events. 11/153 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 85 event pairs, 0 based on Foata normal form. 0/141 useless extension candidates. Maximal degree in co-relation 122. Up to 3 conditions per place. [2021-11-22 15:00:23,039 INFO L82 GeneralOperation]: Start removeDead. Operand has 155 places, 156 transitions, 336 flow [2021-11-22 15:00:23,046 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 141 places, 142 transitions, 302 flow [2021-11-22 15:00:23,094 INFO L129 PetriNetUnfolder]: 11/141 cut-off events. [2021-11-22 15:00:23,095 INFO L130 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2021-11-22 15:00:23,095 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-22 15:00:23,096 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 15:00:23,096 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-22 15:00:23,102 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:00:23,102 INFO L85 PathProgramCache]: Analyzing trace with hash -1502345378, now seen corresponding path program 1 times [2021-11-22 15:00:23,113 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:00:23,113 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1958973959] [2021-11-22 15:00:23,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:00:23,114 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:00:23,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:00:23,482 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:00:23,482 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:00:23,483 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1958973959] [2021-11-22 15:00:23,484 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1958973959] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 15:00:23,484 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:00:23,484 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-22 15:00:23,486 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [499999949] [2021-11-22 15:00:23,505 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 15:00:23,518 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-22 15:00:23,519 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:00:23,556 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-22 15:00:23,564 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-22 15:00:23,569 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 140 out of 156 [2021-11-22 15:00:23,577 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 141 places, 142 transitions, 302 flow. Second operand has 2 states, 2 states have (on average 143.5) internal successors, (287), 2 states have internal predecessors, (287), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:00:23,578 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-22 15:00:23,578 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 140 of 156 [2021-11-22 15:00:23,579 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-22 15:00:23,690 INFO L129 PetriNetUnfolder]: 24/206 cut-off events. [2021-11-22 15:00:23,690 INFO L130 PetriNetUnfolder]: For 28/28 co-relation queries the response was YES. [2021-11-22 15:00:23,692 INFO L84 FinitePrefix]: Finished finitePrefix Result has 263 conditions, 206 events. 24/206 cut-off events. For 28/28 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 370 event pairs, 7 based on Foata normal form. 22/206 useless extension candidates. Maximal degree in co-relation 154. Up to 32 conditions per place. [2021-11-22 15:00:23,695 INFO L132 encePairwiseOnDemand]: 149/156 looper letters, 8 selfloop transitions, 0 changer transitions 4/135 dead transitions. [2021-11-22 15:00:23,696 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 142 places, 135 transitions, 304 flow [2021-11-22 15:00:23,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-22 15:00:23,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2021-11-22 15:00:23,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 295 transitions. [2021-11-22 15:00:23,721 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.9455128205128205 [2021-11-22 15:00:23,722 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 295 transitions. [2021-11-22 15:00:23,722 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 295 transitions. [2021-11-22 15:00:23,731 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-22 15:00:23,735 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 295 transitions. [2021-11-22 15:00:23,745 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 147.5) internal successors, (295), 2 states have internal predecessors, (295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:00:23,755 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 156.0) internal successors, (468), 3 states have internal predecessors, (468), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:00:23,758 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 156.0) internal successors, (468), 3 states have internal predecessors, (468), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:00:23,761 INFO L186 Difference]: Start difference. First operand has 141 places, 142 transitions, 302 flow. Second operand 2 states and 295 transitions. [2021-11-22 15:00:23,762 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 142 places, 135 transitions, 304 flow [2021-11-22 15:00:23,769 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 136 places, 135 transitions, 292 flow, removed 0 selfloop flow, removed 6 redundant places. [2021-11-22 15:00:23,776 INFO L242 Difference]: Finished difference. Result has 136 places, 131 transitions, 268 flow [2021-11-22 15:00:23,778 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=156, PETRI_DIFFERENCE_MINUEND_FLOW=276, PETRI_DIFFERENCE_MINUEND_PLACES=135, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=135, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=135, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=268, PETRI_PLACES=136, PETRI_TRANSITIONS=131} [2021-11-22 15:00:23,784 INFO L334 CegarLoopForPetriNet]: 141 programPoint places, -5 predicate places. [2021-11-22 15:00:23,785 INFO L470 AbstractCegarLoop]: Abstraction has has 136 places, 131 transitions, 268 flow [2021-11-22 15:00:23,785 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 143.5) internal successors, (287), 2 states have internal predecessors, (287), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:00:23,786 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-22 15:00:23,786 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 15:00:23,786 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-22 15:00:23,788 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-22 15:00:23,789 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:00:23,789 INFO L85 PathProgramCache]: Analyzing trace with hash 1179471207, now seen corresponding path program 1 times [2021-11-22 15:00:23,789 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:00:23,790 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1362920537] [2021-11-22 15:00:23,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:00:23,790 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:00:23,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:00:24,107 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:00:24,107 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:00:24,108 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1362920537] [2021-11-22 15:00:24,108 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1362920537] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 15:00:24,108 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:00:24,108 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-22 15:00:24,109 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1237057190] [2021-11-22 15:00:24,109 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 15:00:24,112 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-22 15:00:24,112 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:00:24,113 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-22 15:00:24,113 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-22 15:00:24,116 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 131 out of 156 [2021-11-22 15:00:24,117 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 136 places, 131 transitions, 268 flow. Second operand has 4 states, 4 states have (on average 134.0) internal successors, (536), 4 states have internal predecessors, (536), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:00:24,117 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-22 15:00:24,117 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 131 of 156 [2021-11-22 15:00:24,117 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-22 15:00:24,316 INFO L129 PetriNetUnfolder]: 108/360 cut-off events. [2021-11-22 15:00:24,316 INFO L130 PetriNetUnfolder]: For 26/27 co-relation queries the response was YES. [2021-11-22 15:00:24,319 INFO L84 FinitePrefix]: Finished finitePrefix Result has 550 conditions, 360 events. 108/360 cut-off events. For 26/27 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 1321 event pairs, 16 based on Foata normal form. 0/331 useless extension candidates. Maximal degree in co-relation 547. Up to 61 conditions per place. [2021-11-22 15:00:24,322 INFO L132 encePairwiseOnDemand]: 151/156 looper letters, 30 selfloop transitions, 5 changer transitions 0/149 dead transitions. [2021-11-22 15:00:24,323 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 136 places, 149 transitions, 378 flow [2021-11-22 15:00:24,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-22 15:00:24,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-11-22 15:00:24,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 692 transitions. [2021-11-22 15:00:24,329 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8871794871794871 [2021-11-22 15:00:24,330 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 692 transitions. [2021-11-22 15:00:24,330 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 692 transitions. [2021-11-22 15:00:24,331 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-22 15:00:24,331 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 692 transitions. [2021-11-22 15:00:24,334 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 138.4) internal successors, (692), 5 states have internal predecessors, (692), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:00:24,339 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 156.0) internal successors, (936), 6 states have internal predecessors, (936), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:00:24,340 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 156.0) internal successors, (936), 6 states have internal predecessors, (936), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:00:24,341 INFO L186 Difference]: Start difference. First operand has 136 places, 131 transitions, 268 flow. Second operand 5 states and 692 transitions. [2021-11-22 15:00:24,341 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 136 places, 149 transitions, 378 flow [2021-11-22 15:00:24,343 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 136 places, 149 transitions, 378 flow, removed 0 selfloop flow, removed 0 redundant places. [2021-11-22 15:00:24,347 INFO L242 Difference]: Finished difference. Result has 139 places, 134 transitions, 299 flow [2021-11-22 15:00:24,348 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=156, PETRI_DIFFERENCE_MINUEND_FLOW=268, PETRI_DIFFERENCE_MINUEND_PLACES=132, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=131, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=127, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=299, PETRI_PLACES=139, PETRI_TRANSITIONS=134} [2021-11-22 15:00:24,349 INFO L334 CegarLoopForPetriNet]: 141 programPoint places, -2 predicate places. [2021-11-22 15:00:24,349 INFO L470 AbstractCegarLoop]: Abstraction has has 139 places, 134 transitions, 299 flow [2021-11-22 15:00:24,350 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 134.0) internal successors, (536), 4 states have internal predecessors, (536), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:00:24,350 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-22 15:00:24,351 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 15:00:24,351 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-22 15:00:24,351 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-22 15:00:24,352 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:00:24,352 INFO L85 PathProgramCache]: Analyzing trace with hash -1830553999, now seen corresponding path program 2 times [2021-11-22 15:00:24,353 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:00:24,353 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1127846347] [2021-11-22 15:00:24,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:00:24,354 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:00:24,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:00:24,908 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:00:24,909 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:00:24,909 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1127846347] [2021-11-22 15:00:24,909 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1127846347] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 15:00:24,910 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:00:24,910 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-22 15:00:24,910 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [370459013] [2021-11-22 15:00:24,910 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 15:00:24,911 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-22 15:00:24,911 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:00:24,912 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-22 15:00:24,912 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2021-11-22 15:00:24,916 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 107 out of 156 [2021-11-22 15:00:24,919 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 139 places, 134 transitions, 299 flow. Second operand has 10 states, 10 states have (on average 110.1) internal successors, (1101), 10 states have internal predecessors, (1101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:00:24,919 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-22 15:00:24,919 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 107 of 156 [2021-11-22 15:00:24,919 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-22 15:00:25,388 INFO L129 PetriNetUnfolder]: 223/638 cut-off events. [2021-11-22 15:00:25,389 INFO L130 PetriNetUnfolder]: For 153/153 co-relation queries the response was YES. [2021-11-22 15:00:25,393 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1255 conditions, 638 events. 223/638 cut-off events. For 153/153 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 3505 event pairs, 33 based on Foata normal form. 10/622 useless extension candidates. Maximal degree in co-relation 1248. Up to 144 conditions per place. [2021-11-22 15:00:25,401 INFO L132 encePairwiseOnDemand]: 145/156 looper letters, 52 selfloop transitions, 11 changer transitions 0/157 dead transitions. [2021-11-22 15:00:25,402 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 148 places, 157 transitions, 485 flow [2021-11-22 15:00:25,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-22 15:00:25,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-11-22 15:00:25,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1132 transitions. [2021-11-22 15:00:25,433 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7256410256410256 [2021-11-22 15:00:25,434 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1132 transitions. [2021-11-22 15:00:25,434 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1132 transitions. [2021-11-22 15:00:25,435 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-22 15:00:25,435 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1132 transitions. [2021-11-22 15:00:25,440 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 113.2) internal successors, (1132), 10 states have internal predecessors, (1132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:00:25,449 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 156.0) internal successors, (1716), 11 states have internal predecessors, (1716), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:00:25,451 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 156.0) internal successors, (1716), 11 states have internal predecessors, (1716), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:00:25,452 INFO L186 Difference]: Start difference. First operand has 139 places, 134 transitions, 299 flow. Second operand 10 states and 1132 transitions. [2021-11-22 15:00:25,452 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 148 places, 157 transitions, 485 flow [2021-11-22 15:00:25,457 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 147 places, 157 transitions, 481 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-11-22 15:00:25,462 INFO L242 Difference]: Finished difference. Result has 149 places, 136 transitions, 339 flow [2021-11-22 15:00:25,462 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=156, PETRI_DIFFERENCE_MINUEND_FLOW=296, PETRI_DIFFERENCE_MINUEND_PLACES=138, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=134, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=123, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=339, PETRI_PLACES=149, PETRI_TRANSITIONS=136} [2021-11-22 15:00:25,465 INFO L334 CegarLoopForPetriNet]: 141 programPoint places, 8 predicate places. [2021-11-22 15:00:25,466 INFO L470 AbstractCegarLoop]: Abstraction has has 149 places, 136 transitions, 339 flow [2021-11-22 15:00:25,467 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 110.1) internal successors, (1101), 10 states have internal predecessors, (1101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:00:25,467 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-22 15:00:25,468 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 15:00:25,468 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-22 15:00:25,469 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-22 15:00:25,471 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:00:25,471 INFO L85 PathProgramCache]: Analyzing trace with hash 468617734, now seen corresponding path program 1 times [2021-11-22 15:00:25,471 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:00:25,472 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [98328062] [2021-11-22 15:00:25,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:00:25,472 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:00:25,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:00:25,615 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:00:25,616 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:00:25,616 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [98328062] [2021-11-22 15:00:25,616 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [98328062] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 15:00:25,616 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:00:25,617 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-22 15:00:25,617 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [971554211] [2021-11-22 15:00:25,617 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 15:00:25,618 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-22 15:00:25,618 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:00:25,618 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-22 15:00:25,619 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 15:00:25,620 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 136 out of 156 [2021-11-22 15:00:25,621 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 149 places, 136 transitions, 339 flow. Second operand has 3 states, 3 states have (on average 139.66666666666666) internal successors, (419), 3 states have internal predecessors, (419), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:00:25,621 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-22 15:00:25,621 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 136 of 156 [2021-11-22 15:00:25,621 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-22 15:00:25,685 INFO L129 PetriNetUnfolder]: 33/243 cut-off events. [2021-11-22 15:00:25,685 INFO L130 PetriNetUnfolder]: For 47/47 co-relation queries the response was YES. [2021-11-22 15:00:25,687 INFO L84 FinitePrefix]: Finished finitePrefix Result has 377 conditions, 243 events. 33/243 cut-off events. For 47/47 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 571 event pairs, 5 based on Foata normal form. 4/229 useless extension candidates. Maximal degree in co-relation 368. Up to 41 conditions per place. [2021-11-22 15:00:25,688 INFO L132 encePairwiseOnDemand]: 153/156 looper letters, 13 selfloop transitions, 2 changer transitions 1/140 dead transitions. [2021-11-22 15:00:25,689 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 151 places, 140 transitions, 382 flow [2021-11-22 15:00:25,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-22 15:00:25,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-11-22 15:00:25,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 425 transitions. [2021-11-22 15:00:25,691 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.9081196581196581 [2021-11-22 15:00:25,691 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 425 transitions. [2021-11-22 15:00:25,692 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 425 transitions. [2021-11-22 15:00:25,692 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-22 15:00:25,692 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 425 transitions. [2021-11-22 15:00:25,694 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 141.66666666666666) internal successors, (425), 3 states have internal predecessors, (425), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:00:25,696 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 156.0) internal successors, (624), 4 states have internal predecessors, (624), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:00:25,697 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 156.0) internal successors, (624), 4 states have internal predecessors, (624), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:00:25,697 INFO L186 Difference]: Start difference. First operand has 149 places, 136 transitions, 339 flow. Second operand 3 states and 425 transitions. [2021-11-22 15:00:25,697 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 151 places, 140 transitions, 382 flow [2021-11-22 15:00:25,700 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 144 places, 140 transitions, 365 flow, removed 0 selfloop flow, removed 7 redundant places. [2021-11-22 15:00:25,703 INFO L242 Difference]: Finished difference. Result has 145 places, 137 transitions, 334 flow [2021-11-22 15:00:25,703 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=156, PETRI_DIFFERENCE_MINUEND_FLOW=322, PETRI_DIFFERENCE_MINUEND_PLACES=142, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=136, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=134, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=334, PETRI_PLACES=145, PETRI_TRANSITIONS=137} [2021-11-22 15:00:25,704 INFO L334 CegarLoopForPetriNet]: 141 programPoint places, 4 predicate places. [2021-11-22 15:00:25,705 INFO L470 AbstractCegarLoop]: Abstraction has has 145 places, 137 transitions, 334 flow [2021-11-22 15:00:25,706 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 139.66666666666666) internal successors, (419), 3 states have internal predecessors, (419), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:00:25,706 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-22 15:00:25,707 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 15:00:25,707 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-22 15:00:25,707 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-22 15:00:25,708 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:00:25,709 INFO L85 PathProgramCache]: Analyzing trace with hash 1349938213, now seen corresponding path program 1 times [2021-11-22 15:00:25,709 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:00:25,711 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1187561182] [2021-11-22 15:00:25,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:00:25,711 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:00:25,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:00:25,849 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:00:25,849 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:00:25,849 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1187561182] [2021-11-22 15:00:25,850 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1187561182] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 15:00:25,850 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:00:25,850 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-22 15:00:25,850 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [491780125] [2021-11-22 15:00:25,851 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 15:00:25,851 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-22 15:00:25,851 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:00:25,852 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-22 15:00:25,852 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-11-22 15:00:25,854 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 126 out of 156 [2021-11-22 15:00:25,856 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 145 places, 137 transitions, 334 flow. Second operand has 6 states, 6 states have (on average 129.0) internal successors, (774), 6 states have internal predecessors, (774), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:00:25,856 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-22 15:00:25,856 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 126 of 156 [2021-11-22 15:00:25,856 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-22 15:00:26,012 INFO L129 PetriNetUnfolder]: 34/302 cut-off events. [2021-11-22 15:00:26,012 INFO L130 PetriNetUnfolder]: For 71/79 co-relation queries the response was YES. [2021-11-22 15:00:26,014 INFO L84 FinitePrefix]: Finished finitePrefix Result has 486 conditions, 302 events. 34/302 cut-off events. For 71/79 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 803 event pairs, 9 based on Foata normal form. 3/282 useless extension candidates. Maximal degree in co-relation 476. Up to 51 conditions per place. [2021-11-22 15:00:26,016 INFO L132 encePairwiseOnDemand]: 148/156 looper letters, 21 selfloop transitions, 6 changer transitions 5/146 dead transitions. [2021-11-22 15:00:26,016 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 151 places, 146 transitions, 420 flow [2021-11-22 15:00:26,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-22 15:00:26,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-11-22 15:00:26,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 914 transitions. [2021-11-22 15:00:26,020 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.836996336996337 [2021-11-22 15:00:26,021 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 914 transitions. [2021-11-22 15:00:26,021 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 914 transitions. [2021-11-22 15:00:26,022 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-22 15:00:26,022 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 914 transitions. [2021-11-22 15:00:26,025 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 130.57142857142858) internal successors, (914), 7 states have internal predecessors, (914), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:00:26,029 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 156.0) internal successors, (1248), 8 states have internal predecessors, (1248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:00:26,030 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 156.0) internal successors, (1248), 8 states have internal predecessors, (1248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:00:26,030 INFO L186 Difference]: Start difference. First operand has 145 places, 137 transitions, 334 flow. Second operand 7 states and 914 transitions. [2021-11-22 15:00:26,030 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 151 places, 146 transitions, 420 flow [2021-11-22 15:00:26,033 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 150 places, 146 transitions, 418 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-11-22 15:00:26,036 INFO L242 Difference]: Finished difference. Result has 152 places, 138 transitions, 354 flow [2021-11-22 15:00:26,037 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=156, PETRI_DIFFERENCE_MINUEND_FLOW=332, PETRI_DIFFERENCE_MINUEND_PLACES=144, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=137, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=131, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=354, PETRI_PLACES=152, PETRI_TRANSITIONS=138} [2021-11-22 15:00:26,038 INFO L334 CegarLoopForPetriNet]: 141 programPoint places, 11 predicate places. [2021-11-22 15:00:26,038 INFO L470 AbstractCegarLoop]: Abstraction has has 152 places, 138 transitions, 354 flow [2021-11-22 15:00:26,039 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 129.0) internal successors, (774), 6 states have internal predecessors, (774), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:00:26,039 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-22 15:00:26,039 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 15:00:26,039 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-22 15:00:26,040 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-22 15:00:26,040 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:00:26,040 INFO L85 PathProgramCache]: Analyzing trace with hash 530472597, now seen corresponding path program 1 times [2021-11-22 15:00:26,040 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:00:26,041 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1904819080] [2021-11-22 15:00:26,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:00:26,041 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:00:26,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:00:27,151 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:00:27,152 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:00:27,152 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1904819080] [2021-11-22 15:00:27,152 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1904819080] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-22 15:00:27,152 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [678312364] [2021-11-22 15:00:27,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:00:27,153 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 15:00:27,153 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd104161-401f-48d8-8a40-88df5c6549f9/bin/uautomizer-w2VwFs6gM0/z3 [2021-11-22 15:00:27,157 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd104161-401f-48d8-8a40-88df5c6549f9/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-22 15:00:27,162 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd104161-401f-48d8-8a40-88df5c6549f9/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-22 15:00:27,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:00:27,305 INFO L263 TraceCheckSpWp]: Trace formula consists of 287 conjuncts, 51 conjunts are in the unsatisfiable core [2021-11-22 15:00:27,319 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 15:00:28,641 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2021-11-22 15:00:29,481 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 13 [2021-11-22 15:00:29,669 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 13 [2021-11-22 15:00:30,087 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 13 [2021-11-22 15:00:30,499 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 29 treesize of output 13 [2021-11-22 15:00:30,742 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:00:30,742 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-22 15:00:58,963 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-22 15:00:58,964 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 47308 treesize of output 46556 [2021-11-22 15:00:59,379 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: BigInteger out of long range [2021-11-22 15:00:59,379 INFO L186 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2021-11-22 15:00:59,379 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2021-11-22 15:00:59,380 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [967571059] [2021-11-22 15:00:59,380 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2021-11-22 15:00:59,381 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2021-11-22 15:00:59,381 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:00:59,386 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-11-22 15:00:59,389 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=588, Invalid=3960, Unknown=8, NotChecked=0, Total=4556 [2021-11-22 15:00:59,393 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 84 out of 156 [2021-11-22 15:00:59,396 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 152 places, 138 transitions, 354 flow. Second operand has 22 states, 22 states have (on average 86.9090909090909) internal successors, (1912), 22 states have internal predecessors, (1912), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:00:59,397 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-22 15:00:59,397 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 84 of 156 [2021-11-22 15:00:59,397 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-22 15:01:06,981 INFO L129 PetriNetUnfolder]: 4917/9577 cut-off events. [2021-11-22 15:01:06,981 INFO L130 PetriNetUnfolder]: For 5322/5322 co-relation queries the response was YES. [2021-11-22 15:01:07,092 INFO L84 FinitePrefix]: Finished finitePrefix Result has 22369 conditions, 9577 events. 4917/9577 cut-off events. For 5322/5322 co-relation queries the response was YES. Maximal size of possible extension queue 540. Compared 80524 event pairs, 265 based on Foata normal form. 28/8987 useless extension candidates. Maximal degree in co-relation 22357. Up to 947 conditions per place. [2021-11-22 15:01:07,141 INFO L132 encePairwiseOnDemand]: 125/156 looper letters, 331 selfloop transitions, 85 changer transitions 144/627 dead transitions. [2021-11-22 15:01:07,141 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 208 places, 627 transitions, 2920 flow [2021-11-22 15:01:07,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2021-11-22 15:01:07,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2021-11-22 15:01:07,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 5423 transitions. [2021-11-22 15:01:07,167 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.5993589743589743 [2021-11-22 15:01:07,168 INFO L72 ComplementDD]: Start complementDD. Operand 58 states and 5423 transitions. [2021-11-22 15:01:07,168 INFO L73 IsDeterministic]: Start isDeterministic. Operand 58 states and 5423 transitions. [2021-11-22 15:01:07,173 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-22 15:01:07,173 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 58 states and 5423 transitions. [2021-11-22 15:01:07,190 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 59 states, 58 states have (on average 93.5) internal successors, (5423), 58 states have internal predecessors, (5423), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:01:07,215 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 59 states, 59 states have (on average 156.0) internal successors, (9204), 59 states have internal predecessors, (9204), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:01:07,221 INFO L81 ComplementDD]: Finished complementDD. Result has 59 states, 59 states have (on average 156.0) internal successors, (9204), 59 states have internal predecessors, (9204), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:01:07,221 INFO L186 Difference]: Start difference. First operand has 152 places, 138 transitions, 354 flow. Second operand 58 states and 5423 transitions. [2021-11-22 15:01:07,221 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 208 places, 627 transitions, 2920 flow [2021-11-22 15:01:07,249 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 203 places, 627 transitions, 2898 flow, removed 6 selfloop flow, removed 5 redundant places. [2021-11-22 15:01:07,263 INFO L242 Difference]: Finished difference. Result has 243 places, 207 transitions, 1066 flow [2021-11-22 15:01:07,263 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=156, PETRI_DIFFERENCE_MINUEND_FLOW=342, PETRI_DIFFERENCE_MINUEND_PLACES=146, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=138, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=102, PETRI_DIFFERENCE_SUBTRAHEND_STATES=58, PETRI_FLOW=1066, PETRI_PLACES=243, PETRI_TRANSITIONS=207} [2021-11-22 15:01:07,267 INFO L334 CegarLoopForPetriNet]: 141 programPoint places, 102 predicate places. [2021-11-22 15:01:07,267 INFO L470 AbstractCegarLoop]: Abstraction has has 243 places, 207 transitions, 1066 flow [2021-11-22 15:01:07,268 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 86.9090909090909) internal successors, (1912), 22 states have internal predecessors, (1912), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:01:07,269 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-22 15:01:07,269 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 15:01:07,310 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd104161-401f-48d8-8a40-88df5c6549f9/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-22 15:01:07,485 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd104161-401f-48d8-8a40-88df5c6549f9/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2021-11-22 15:01:07,485 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-22 15:01:07,486 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:01:07,486 INFO L85 PathProgramCache]: Analyzing trace with hash -1142392979, now seen corresponding path program 2 times [2021-11-22 15:01:07,486 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:01:07,486 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1420737952] [2021-11-22 15:01:07,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:01:07,486 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:01:07,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:01:09,464 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:01:09,464 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:01:09,464 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1420737952] [2021-11-22 15:01:09,465 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1420737952] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-22 15:01:09,465 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [24660345] [2021-11-22 15:01:09,465 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-22 15:01:09,465 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 15:01:09,466 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd104161-401f-48d8-8a40-88df5c6549f9/bin/uautomizer-w2VwFs6gM0/z3 [2021-11-22 15:01:09,469 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd104161-401f-48d8-8a40-88df5c6549f9/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-22 15:01:09,489 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd104161-401f-48d8-8a40-88df5c6549f9/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-22 15:01:09,587 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-22 15:01:09,587 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-22 15:01:09,590 INFO L263 TraceCheckSpWp]: Trace formula consists of 287 conjuncts, 56 conjunts are in the unsatisfiable core [2021-11-22 15:01:09,606 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 15:01:11,118 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2021-11-22 15:01:12,051 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 13 [2021-11-22 15:01:12,216 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 13 [2021-11-22 15:01:12,959 INFO L354 Elim1Store]: treesize reduction 37, result has 22.9 percent of original size [2021-11-22 15:01:12,959 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 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 28 treesize of output 27 [2021-11-22 15:01:13,237 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 29 treesize of output 13 [2021-11-22 15:01:13,472 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:01:13,473 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-22 15:01:36,144 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-22 15:01:36,145 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 17068 treesize of output 16796 [2021-11-22 15:01:36,256 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: BigInteger out of long range [2021-11-22 15:01:36,256 INFO L186 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2021-11-22 15:01:36,257 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25] total 25 [2021-11-22 15:01:36,257 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1723027998] [2021-11-22 15:01:36,257 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2021-11-22 15:01:36,258 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2021-11-22 15:01:36,258 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:01:36,259 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-11-22 15:01:36,262 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=387, Invalid=4579, Unknown=4, NotChecked=0, Total=4970 [2021-11-22 15:01:36,264 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 74 out of 156 [2021-11-22 15:01:36,267 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 243 places, 207 transitions, 1066 flow. Second operand has 25 states, 25 states have (on average 76.8) internal successors, (1920), 25 states have internal predecessors, (1920), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:01:36,267 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-22 15:01:36,269 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 74 of 156 [2021-11-22 15:01:36,269 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-22 15:01:50,279 INFO L129 PetriNetUnfolder]: 5914/11801 cut-off events. [2021-11-22 15:01:50,280 INFO L130 PetriNetUnfolder]: For 76316/76458 co-relation queries the response was YES. [2021-11-22 15:01:50,423 INFO L84 FinitePrefix]: Finished finitePrefix Result has 47587 conditions, 11801 events. 5914/11801 cut-off events. For 76316/76458 co-relation queries the response was YES. Maximal size of possible extension queue 654. Compared 103025 event pairs, 772 based on Foata normal form. 43/11576 useless extension candidates. Maximal degree in co-relation 47536. Up to 1549 conditions per place. [2021-11-22 15:01:50,487 INFO L132 encePairwiseOnDemand]: 125/156 looper letters, 283 selfloop transitions, 116 changer transitions 118/578 dead transitions. [2021-11-22 15:01:50,488 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 282 places, 578 transitions, 4711 flow [2021-11-22 15:01:50,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2021-11-22 15:01:50,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2021-11-22 15:01:50,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 4206 transitions. [2021-11-22 15:01:50,503 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.528657616892911 [2021-11-22 15:01:50,504 INFO L72 ComplementDD]: Start complementDD. Operand 51 states and 4206 transitions. [2021-11-22 15:01:50,504 INFO L73 IsDeterministic]: Start isDeterministic. Operand 51 states and 4206 transitions. [2021-11-22 15:01:50,509 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-22 15:01:50,509 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 51 states and 4206 transitions. [2021-11-22 15:01:50,596 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 52 states, 51 states have (on average 82.47058823529412) internal successors, (4206), 51 states have internal predecessors, (4206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:01:50,614 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 52 states, 52 states have (on average 156.0) internal successors, (8112), 52 states have internal predecessors, (8112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:01:50,618 INFO L81 ComplementDD]: Finished complementDD. Result has 52 states, 52 states have (on average 156.0) internal successors, (8112), 52 states have internal predecessors, (8112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:01:50,618 INFO L186 Difference]: Start difference. First operand has 243 places, 207 transitions, 1066 flow. Second operand 51 states and 4206 transitions. [2021-11-22 15:01:50,619 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 282 places, 578 transitions, 4711 flow [2021-11-22 15:01:51,060 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 262 places, 578 transitions, 4284 flow, removed 171 selfloop flow, removed 20 redundant places. [2021-11-22 15:01:51,066 INFO L242 Difference]: Finished difference. Result has 270 places, 253 transitions, 1746 flow [2021-11-22 15:01:51,067 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=156, PETRI_DIFFERENCE_MINUEND_FLOW=975, PETRI_DIFFERENCE_MINUEND_PLACES=212, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=207, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=73, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=130, PETRI_DIFFERENCE_SUBTRAHEND_STATES=51, PETRI_FLOW=1746, PETRI_PLACES=270, PETRI_TRANSITIONS=253} [2021-11-22 15:01:51,068 INFO L334 CegarLoopForPetriNet]: 141 programPoint places, 129 predicate places. [2021-11-22 15:01:51,068 INFO L470 AbstractCegarLoop]: Abstraction has has 270 places, 253 transitions, 1746 flow [2021-11-22 15:01:51,070 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 76.8) internal successors, (1920), 25 states have internal predecessors, (1920), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:01:51,070 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-22 15:01:51,070 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 15:01:51,095 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd104161-401f-48d8-8a40-88df5c6549f9/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2021-11-22 15:01:51,281 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd104161-401f-48d8-8a40-88df5c6549f9/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 15:01:51,281 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-22 15:01:51,282 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:01:51,282 INFO L85 PathProgramCache]: Analyzing trace with hash 2083206253, now seen corresponding path program 3 times [2021-11-22 15:01:51,282 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:01:51,283 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1405664918] [2021-11-22 15:01:51,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:01:51,283 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:01:51,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:01:52,704 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:01:52,705 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:01:52,705 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1405664918] [2021-11-22 15:01:52,705 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1405664918] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-22 15:01:52,705 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [557251699] [2021-11-22 15:01:52,705 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-22 15:01:52,706 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 15:01:52,706 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd104161-401f-48d8-8a40-88df5c6549f9/bin/uautomizer-w2VwFs6gM0/z3 [2021-11-22 15:01:52,706 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd104161-401f-48d8-8a40-88df5c6549f9/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-22 15:01:52,707 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd104161-401f-48d8-8a40-88df5c6549f9/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-22 15:01:52,796 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-11-22 15:01:52,796 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-22 15:01:52,798 INFO L263 TraceCheckSpWp]: Trace formula consists of 287 conjuncts, 54 conjunts are in the unsatisfiable core [2021-11-22 15:01:52,804 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 15:01:52,867 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-22 15:01:52,919 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-11-22 15:01:52,919 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 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 12 treesize of output 14 [2021-11-22 15:01:53,551 INFO L354 Elim1Store]: treesize reduction 16, result has 36.0 percent of original size [2021-11-22 15:01:53,552 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 16 treesize of output 18 [2021-11-22 15:01:55,149 INFO L354 Elim1Store]: treesize reduction 37, result has 22.9 percent of original size [2021-11-22 15:01:55,149 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 1 case distinctions, treesize of input 27 treesize of output 26 [2021-11-22 15:01:55,398 INFO L354 Elim1Store]: treesize reduction 37, result has 22.9 percent of original size [2021-11-22 15:01:55,399 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 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 27 treesize of output 26 [2021-11-22 15:01:55,500 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 25 treesize of output 13 [2021-11-22 15:01:55,830 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:01:55,831 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-22 15:02:25,635 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-22 15:02:25,635 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 118 treesize of output 118 [2021-11-22 15:02:29,644 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 21 treesize of output 19 [2021-11-22 15:02:29,679 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:02:29,680 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [557251699] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-22 15:02:29,680 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-22 15:02:29,680 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 29, 29] total 76 [2021-11-22 15:02:29,680 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [321869444] [2021-11-22 15:02:29,680 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-22 15:02:29,681 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 76 states [2021-11-22 15:02:29,682 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:02:29,682 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 76 interpolants. [2021-11-22 15:02:29,685 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=430, Invalid=5264, Unknown=6, NotChecked=0, Total=5700 [2021-11-22 15:02:29,691 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 70 out of 156 [2021-11-22 15:02:29,699 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 270 places, 253 transitions, 1746 flow. Second operand has 76 states, 76 states have (on average 72.42105263157895) internal successors, (5504), 76 states have internal predecessors, (5504), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:02:29,700 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-22 15:02:29,700 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 70 of 156 [2021-11-22 15:02:29,700 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-22 15:02:38,595 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse7 (+ |c_#StackHeapBarrier| 1)) (.cse1 (< c_~back~0 0)) (.cse2 (< 1 |c_ULTIMATE.start_create_fresh_int_array_~size#1|)) (.cse5 (= (* 4 c_~back~0) (* 4 c_~front~0))) (.cse6 (<= c_~d~0 0)) (.cse3 (<= c_~n~0 c_~back~0)) (.cse4 (= (mod c_~v_assert~0 256) 0))) (and (forall ((|ULTIMATE.start_main_~#t3~0#1.offset| Int) (|ULTIMATE.start_main_#t~pre12#1| Int) (|ULTIMATE.start_main_~#t2~0#1.offset| Int) (|ULTIMATE.start_main_#t~pre14#1| Int)) (<= (+ c_~d~0 (select (select (let ((.cse0 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| (store (select |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base|) |ULTIMATE.start_main_~#t2~0#1.offset| |ULTIMATE.start_main_#t~pre12#1|)))) (store .cse0 |c_ULTIMATE.start_main_~#t3~0#1.base| (store (select .cse0 |c_ULTIMATE.start_main_~#t3~0#1.base|) |ULTIMATE.start_main_~#t3~0#1.offset| |ULTIMATE.start_main_#t~pre14#1|))) c_~queue~0.base) (+ (* c_~front~0 4) c_~queue~0.offset))) c_~W~0)) (or .cse1 .cse2 .cse3 .cse4 (and (not (= |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base| |c_ULTIMATE.start_main_~#t3~0#1.base|)) .cse5 .cse6 (not (= |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base| |c_ULTIMATE.start_main_~#t2~0#1.base|)))) (<= 1 c_~v_assert~0) (<= c_~v_assert~0 1) (<= .cse7 |c_ULTIMATE.start_main_~#t2~0#1.base|) (= c_~d~0 0) (<= .cse7 |c_ULTIMATE.start_main_~#t3~0#1.base|) (<= c_~d~0 1) (or .cse1 .cse2 (and (not (= |c_ULTIMATE.start_create_fresh_int_array_#t~malloc19#1.base| |c_ULTIMATE.start_main_~#t3~0#1.base|)) .cse5 (not (= |c_ULTIMATE.start_create_fresh_int_array_#t~malloc19#1.base| |c_ULTIMATE.start_main_~#t2~0#1.base|)) .cse6) .cse3 .cse4) (< 0 c_~W~0))) is different from false [2021-11-22 15:03:16,092 WARN L227 SmtUtils]: Spent 12.33s on a formula simplification. DAG size of input: 72 DAG size of output: 63 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-22 15:03:42,828 WARN L227 SmtUtils]: Spent 5.01s on a formula simplification that was a NOOP. DAG size: 32 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-22 15:04:28,885 WARN L227 SmtUtils]: Spent 27.63s on a formula simplification. DAG size of input: 82 DAG size of output: 71 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-22 15:04:38,140 WARN L227 SmtUtils]: Spent 7.80s on a formula simplification that was a NOOP. DAG size: 61 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-22 15:06:11,194 WARN L227 SmtUtils]: Spent 50.30s on a formula simplification. DAG size of input: 64 DAG size of output: 62 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-22 15:06:50,278 WARN L227 SmtUtils]: Spent 33.19s on a formula simplification. DAG size of input: 90 DAG size of output: 71 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-22 15:07:29,528 WARN L227 SmtUtils]: Spent 33.97s on a formula simplification. DAG size of input: 83 DAG size of output: 73 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-22 15:08:35,948 WARN L227 SmtUtils]: Spent 33.40s on a formula simplification. DAG size of input: 67 DAG size of output: 65 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-22 15:08:37,657 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse1 (+ |c_#StackHeapBarrier| 1))) (and (forall ((|ULTIMATE.start_main_~#t3~0#1.offset| Int) (|ULTIMATE.start_main_#t~pre12#1| Int) (|ULTIMATE.start_main_~#t2~0#1.offset| Int) (|ULTIMATE.start_main_#t~pre14#1| Int)) (<= (+ c_~d~0 (select (select (let ((.cse0 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| (store (select |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base|) |ULTIMATE.start_main_~#t2~0#1.offset| |ULTIMATE.start_main_#t~pre12#1|)))) (store .cse0 |c_ULTIMATE.start_main_~#t3~0#1.base| (store (select .cse0 |c_ULTIMATE.start_main_~#t3~0#1.base|) |ULTIMATE.start_main_~#t3~0#1.offset| |ULTIMATE.start_main_#t~pre14#1|))) c_~queue~0.base) (+ (* c_~front~0 4) c_~queue~0.offset))) c_~W~0)) (or (< c_~back~0 0) (< 1 |c_ULTIMATE.start_create_fresh_int_array_~size#1|) (<= c_~n~0 c_~back~0) (= (mod c_~v_assert~0 256) 0) (and (not (= |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base| |c_ULTIMATE.start_main_~#t3~0#1.base|)) (= (* 4 c_~back~0) (* 4 c_~front~0)) (<= c_~d~0 0) (not (= |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base| |c_ULTIMATE.start_main_~#t2~0#1.base|)))) (<= .cse1 |c_ULTIMATE.start_main_~#t2~0#1.base|) (= c_~d~0 0) (<= .cse1 |c_ULTIMATE.start_main_~#t3~0#1.base|) (<= c_~d~0 1) (< 0 c_~W~0))) is different from false [2021-11-22 15:08:39,858 WARN L838 $PredicateComparison]: unable to prove that (and (forall ((|ULTIMATE.start_main_~#t3~0#1.offset| Int) (|ULTIMATE.start_main_#t~pre12#1| Int) (|ULTIMATE.start_main_~#t2~0#1.offset| Int) (|ULTIMATE.start_main_#t~pre14#1| Int)) (<= (+ c_~d~0 (select (select (let ((.cse0 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| (store (select |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base|) |ULTIMATE.start_main_~#t2~0#1.offset| |ULTIMATE.start_main_#t~pre12#1|)))) (store .cse0 |c_ULTIMATE.start_main_~#t3~0#1.base| (store (select .cse0 |c_ULTIMATE.start_main_~#t3~0#1.base|) |ULTIMATE.start_main_~#t3~0#1.offset| |ULTIMATE.start_main_#t~pre14#1|))) c_~queue~0.base) (+ (* c_~front~0 4) c_~queue~0.offset))) c_~W~0)) (<= 1 c_~v_assert~0) (<= c_~v_assert~0 1) (<= c_~d~0 1) (<= 1 |c_thread2Thread1of1ForFork2_~cond~1#1|) (<= |c_thread2Thread1of1ForFork2_~cond~1#1| 1) (<= (div |c_thread2Thread1of1ForFork2_~cond~1#1| 256) 0) (= |c_thread2Thread1of1ForFork2_~cond~1#1| c_~v_assert~0) (< 0 c_~W~0)) is different from false [2021-11-22 15:08:45,376 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse7 (+ |c_#StackHeapBarrier| 1)) (.cse1 (< c_~back~0 0)) (.cse2 (< 1 |c_ULTIMATE.start_create_fresh_int_array_~size#1|)) (.cse5 (= (* 4 c_~back~0) (* 4 c_~front~0))) (.cse6 (<= c_~d~0 0)) (.cse3 (<= c_~n~0 c_~back~0)) (.cse4 (= (mod c_~v_assert~0 256) 0))) (and (forall ((|ULTIMATE.start_main_~#t3~0#1.offset| Int) (|ULTIMATE.start_main_#t~pre12#1| Int) (|ULTIMATE.start_main_~#t2~0#1.offset| Int) (|ULTIMATE.start_main_#t~pre14#1| Int)) (<= (+ c_~d~0 (select (select (let ((.cse0 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| (store (select |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base|) |ULTIMATE.start_main_~#t2~0#1.offset| |ULTIMATE.start_main_#t~pre12#1|)))) (store .cse0 |c_ULTIMATE.start_main_~#t3~0#1.base| (store (select .cse0 |c_ULTIMATE.start_main_~#t3~0#1.base|) |ULTIMATE.start_main_~#t3~0#1.offset| |ULTIMATE.start_main_#t~pre14#1|))) c_~queue~0.base) (+ (* c_~front~0 4) c_~queue~0.offset))) c_~W~0)) (or .cse1 .cse2 .cse3 .cse4 (and (not (= |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base| |c_ULTIMATE.start_main_~#t3~0#1.base|)) .cse5 .cse6 (not (= |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base| |c_ULTIMATE.start_main_~#t2~0#1.base|)))) (<= .cse7 |c_ULTIMATE.start_main_~#t2~0#1.base|) (= c_~d~0 0) (<= .cse7 |c_ULTIMATE.start_main_~#t3~0#1.base|) (<= c_~d~0 1) (<= 1 |c_thread2Thread1of1ForFork2_~cond~1#1|) (<= |c_thread2Thread1of1ForFork2_~cond~1#1| 1) (or .cse1 .cse2 (and (not (= |c_ULTIMATE.start_create_fresh_int_array_#t~malloc19#1.base| |c_ULTIMATE.start_main_~#t3~0#1.base|)) .cse5 (not (= |c_ULTIMATE.start_create_fresh_int_array_#t~malloc19#1.base| |c_ULTIMATE.start_main_~#t2~0#1.base|)) .cse6) .cse3 .cse4) (< 0 c_~W~0) (forall ((|ULTIMATE.start_main_~#t3~0#1.offset| Int) (|ULTIMATE.start_main_#t~pre14#1| Int)) (<= (+ c_~d~0 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| (store (select |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base|) |ULTIMATE.start_main_~#t3~0#1.offset| |ULTIMATE.start_main_#t~pre14#1|)) c_~queue~0.base) (+ (* c_~front~0 4) c_~queue~0.offset))) c_~W~0)))) is different from false [2021-11-22 15:08:47,383 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse7 (+ |c_#StackHeapBarrier| 1)) (.cse1 (< c_~back~0 0)) (.cse2 (< 1 |c_ULTIMATE.start_create_fresh_int_array_~size#1|)) (.cse5 (= (* 4 c_~back~0) (* 4 c_~front~0))) (.cse6 (<= c_~d~0 0)) (.cse3 (<= c_~n~0 c_~back~0)) (.cse4 (= (mod c_~v_assert~0 256) 0))) (and (< 0 (mod |c_thread2Thread1of1ForFork2_~cond~1#1| 256)) (forall ((|ULTIMATE.start_main_~#t3~0#1.offset| Int) (|ULTIMATE.start_main_#t~pre12#1| Int) (|ULTIMATE.start_main_~#t2~0#1.offset| Int) (|ULTIMATE.start_main_#t~pre14#1| Int)) (<= (+ c_~d~0 (select (select (let ((.cse0 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| (store (select |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base|) |ULTIMATE.start_main_~#t2~0#1.offset| |ULTIMATE.start_main_#t~pre12#1|)))) (store .cse0 |c_ULTIMATE.start_main_~#t3~0#1.base| (store (select .cse0 |c_ULTIMATE.start_main_~#t3~0#1.base|) |ULTIMATE.start_main_~#t3~0#1.offset| |ULTIMATE.start_main_#t~pre14#1|))) c_~queue~0.base) (+ (* c_~front~0 4) c_~queue~0.offset))) c_~W~0)) (or .cse1 .cse2 .cse3 .cse4 (and (not (= |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base| |c_ULTIMATE.start_main_~#t3~0#1.base|)) .cse5 .cse6 (not (= |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base| |c_ULTIMATE.start_main_~#t2~0#1.base|)))) (<= .cse7 |c_ULTIMATE.start_main_~#t2~0#1.base|) (= c_~d~0 0) (<= .cse7 |c_ULTIMATE.start_main_~#t3~0#1.base|) (<= c_~d~0 1) (or .cse1 .cse2 (and (not (= |c_ULTIMATE.start_create_fresh_int_array_#t~malloc19#1.base| |c_ULTIMATE.start_main_~#t3~0#1.base|)) .cse5 (not (= |c_ULTIMATE.start_create_fresh_int_array_#t~malloc19#1.base| |c_ULTIMATE.start_main_~#t2~0#1.base|)) .cse6) .cse3 .cse4) (< 0 c_~W~0) (forall ((|ULTIMATE.start_main_~#t3~0#1.offset| Int) (|ULTIMATE.start_main_#t~pre14#1| Int)) (<= (+ c_~d~0 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| (store (select |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base|) |ULTIMATE.start_main_~#t3~0#1.offset| |ULTIMATE.start_main_#t~pre14#1|)) c_~queue~0.base) (+ (* c_~front~0 4) c_~queue~0.offset))) c_~W~0)))) is different from false [2021-11-22 15:08:48,558 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse7 (+ |c_#StackHeapBarrier| 1)) (.cse1 (< c_~back~0 0)) (.cse2 (< 1 |c_ULTIMATE.start_create_fresh_int_array_~size#1|)) (.cse5 (= (* 4 c_~back~0) (* 4 c_~front~0))) (.cse6 (<= c_~d~0 0)) (.cse3 (<= c_~n~0 c_~back~0)) (.cse4 (= (mod c_~v_assert~0 256) 0))) (and (< 0 (mod |c_thread2Thread1of1ForFork2_~cond~1#1| 256)) (forall ((|ULTIMATE.start_main_~#t3~0#1.offset| Int) (|ULTIMATE.start_main_#t~pre12#1| Int) (|ULTIMATE.start_main_~#t2~0#1.offset| Int) (|ULTIMATE.start_main_#t~pre14#1| Int)) (<= (+ c_~d~0 (select (select (let ((.cse0 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| (store (select |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base|) |ULTIMATE.start_main_~#t2~0#1.offset| |ULTIMATE.start_main_#t~pre12#1|)))) (store .cse0 |c_ULTIMATE.start_main_~#t3~0#1.base| (store (select .cse0 |c_ULTIMATE.start_main_~#t3~0#1.base|) |ULTIMATE.start_main_~#t3~0#1.offset| |ULTIMATE.start_main_#t~pre14#1|))) c_~queue~0.base) (+ (* c_~front~0 4) c_~queue~0.offset))) c_~W~0)) (or .cse1 .cse2 .cse3 .cse4 (and (not (= |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base| |c_ULTIMATE.start_main_~#t3~0#1.base|)) .cse5 .cse6 (not (= |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base| |c_ULTIMATE.start_main_~#t2~0#1.base|)))) (<= .cse7 |c_ULTIMATE.start_main_~#t2~0#1.base|) (= c_~d~0 0) (<= .cse7 |c_ULTIMATE.start_main_~#t3~0#1.base|) (<= c_~d~0 1) (or .cse1 .cse2 (and (not (= |c_ULTIMATE.start_create_fresh_int_array_#t~malloc19#1.base| |c_ULTIMATE.start_main_~#t3~0#1.base|)) .cse5 (not (= |c_ULTIMATE.start_create_fresh_int_array_#t~malloc19#1.base| |c_ULTIMATE.start_main_~#t2~0#1.base|)) .cse6) .cse3 .cse4) (< 0 c_~W~0))) is different from false [2021-11-22 15:09:07,416 WARN L227 SmtUtils]: Spent 5.57s on a formula simplification. DAG size of input: 60 DAG size of output: 53 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-22 15:09:34,279 WARN L227 SmtUtils]: Spent 18.72s on a formula simplification. DAG size of input: 75 DAG size of output: 71 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-22 15:10:08,802 WARN L227 SmtUtils]: Spent 28.37s on a formula simplification. DAG size of input: 68 DAG size of output: 61 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-22 15:10:10,559 WARN L838 $PredicateComparison]: unable to prove that (and (forall ((|ULTIMATE.start_main_~#t3~0#1.offset| Int) (|ULTIMATE.start_main_#t~pre12#1| Int) (|ULTIMATE.start_main_~#t2~0#1.offset| Int) (|ULTIMATE.start_main_#t~pre14#1| Int)) (<= (+ c_~d~0 (select (select (let ((.cse0 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| (store (select |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base|) |ULTIMATE.start_main_~#t2~0#1.offset| |ULTIMATE.start_main_#t~pre12#1|)))) (store .cse0 |c_ULTIMATE.start_main_~#t3~0#1.base| (store (select .cse0 |c_ULTIMATE.start_main_~#t3~0#1.base|) |ULTIMATE.start_main_~#t3~0#1.offset| |ULTIMATE.start_main_#t~pre14#1|))) c_~queue~0.base) (+ (* c_~front~0 4) c_~queue~0.offset))) c_~W~0)) (<= c_~d~0 c_~W~0)) is different from false [2021-11-22 15:10:51,942 WARN L227 SmtUtils]: Spent 30.39s on a formula simplification. DAG size of input: 68 DAG size of output: 64 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-22 15:11:33,256 WARN L227 SmtUtils]: Spent 37.08s on a formula simplification. DAG size of input: 67 DAG size of output: 63 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-22 15:12:13,856 WARN L227 SmtUtils]: Spent 32.87s on a formula simplification. DAG size of input: 78 DAG size of output: 74 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-22 15:12:22,157 WARN L227 SmtUtils]: Spent 6.25s on a formula simplification. DAG size of input: 67 DAG size of output: 66 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-22 15:12:57,169 WARN L227 SmtUtils]: Spent 28.90s on a formula simplification. DAG size of input: 71 DAG size of output: 67 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-22 15:12:59,517 WARN L838 $PredicateComparison]: unable to prove that (and (forall ((|ULTIMATE.start_main_~#t3~0#1.offset| Int) (|ULTIMATE.start_main_#t~pre12#1| Int) (|ULTIMATE.start_main_~#t2~0#1.offset| Int) (|ULTIMATE.start_main_#t~pre14#1| Int)) (<= (+ c_~d~0 (select (select (let ((.cse0 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| (store (select |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base|) |ULTIMATE.start_main_~#t2~0#1.offset| |ULTIMATE.start_main_#t~pre12#1|)))) (store .cse0 |c_ULTIMATE.start_main_~#t3~0#1.base| (store (select .cse0 |c_ULTIMATE.start_main_~#t3~0#1.base|) |ULTIMATE.start_main_~#t3~0#1.offset| |ULTIMATE.start_main_#t~pre14#1|))) c_~queue~0.base) (+ (* c_~front~0 4) c_~queue~0.offset))) c_~W~0)) (forall ((|ULTIMATE.start_main_~#t3~0#1.offset| Int) (|ULTIMATE.start_main_#t~pre14#1| Int)) (<= (+ c_~d~0 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| (store (select |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base|) |ULTIMATE.start_main_~#t3~0#1.offset| |ULTIMATE.start_main_#t~pre14#1|)) c_~queue~0.base) (+ (* c_~front~0 4) c_~queue~0.offset))) c_~W~0))) is different from false [2021-11-22 15:13:20,150 WARN L227 SmtUtils]: Spent 9.08s on a formula simplification. DAG size of input: 66 DAG size of output: 65 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-22 15:13:35,487 WARN L227 SmtUtils]: Spent 7.56s on a formula simplification. DAG size of input: 70 DAG size of output: 69 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate)