./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/valid-memsafety.prp --file ../../../trunk/examples/svcomp/weaver/popl20-bad-dot-product-alt.wvr.c --full-output --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations BEFORE --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version b8dbc81d Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../../../trunk/examples/svcomp/weaver/popl20-bad-dot-product-alt.wvr.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash e280ea7002eb926faba3195da50aa743246f3289123bb9a1b445dc9aaf8e8f3d --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations BEFORE --- Real Ultimate output --- This is Ultimate 0.2.3-?-b8dbc81 [2023-09-01 02:42:34,101 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-09-01 02:42:34,103 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-09-01 02:42:34,125 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-09-01 02:42:34,134 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-09-01 02:42:34,135 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-09-01 02:42:34,136 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-09-01 02:42:34,138 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-09-01 02:42:34,139 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-09-01 02:42:34,140 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-09-01 02:42:34,141 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-09-01 02:42:34,142 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-09-01 02:42:34,142 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-09-01 02:42:34,143 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-09-01 02:42:34,144 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-09-01 02:42:34,145 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-09-01 02:42:34,145 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-09-01 02:42:34,146 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-09-01 02:42:34,147 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-09-01 02:42:34,149 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-09-01 02:42:34,150 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-09-01 02:42:34,156 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-09-01 02:42:34,158 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-09-01 02:42:34,159 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-09-01 02:42:34,162 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-09-01 02:42:34,163 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-09-01 02:42:34,163 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-09-01 02:42:34,164 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-09-01 02:42:34,164 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-09-01 02:42:34,165 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-09-01 02:42:34,165 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-09-01 02:42:34,166 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-09-01 02:42:34,167 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-09-01 02:42:34,167 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-09-01 02:42:34,168 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-09-01 02:42:34,168 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-09-01 02:42:34,169 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-09-01 02:42:34,169 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-09-01 02:42:34,169 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-09-01 02:42:34,170 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-09-01 02:42:34,171 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-09-01 02:42:34,174 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2023-09-01 02:42:34,210 INFO L113 SettingsManager]: Loading preferences was successful [2023-09-01 02:42:34,210 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-09-01 02:42:34,211 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-09-01 02:42:34,212 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-09-01 02:42:34,213 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-09-01 02:42:34,213 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-09-01 02:42:34,213 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-09-01 02:42:34,213 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-09-01 02:42:34,214 INFO L138 SettingsManager]: * Use SBE=true [2023-09-01 02:42:34,214 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-09-01 02:42:34,215 INFO L138 SettingsManager]: * sizeof long=4 [2023-09-01 02:42:34,215 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-09-01 02:42:34,215 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-09-01 02:42:34,215 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-09-01 02:42:34,215 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-09-01 02:42:34,216 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-09-01 02:42:34,216 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2023-09-01 02:42:34,216 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-09-01 02:42:34,216 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-09-01 02:42:34,216 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-09-01 02:42:34,216 INFO L138 SettingsManager]: * sizeof long double=12 [2023-09-01 02:42:34,217 INFO L138 SettingsManager]: * Use constant arrays=true [2023-09-01 02:42:34,217 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-09-01 02:42:34,217 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-09-01 02:42:34,217 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-09-01 02:42:34,217 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-09-01 02:42:34,218 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-09-01 02:42:34,218 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-09-01 02:42:34,218 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-09-01 02:42:34,218 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-09-01 02:42:34,218 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-09-01 02:42:34,218 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-09-01 02:42:34,219 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-09-01 02:42:34,219 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-09-01 02:42:34,219 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e280ea7002eb926faba3195da50aa743246f3289123bb9a1b445dc9aaf8e8f3d Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> BEFORE [2023-09-01 02:42:34,553 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-09-01 02:42:34,577 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-09-01 02:42:34,580 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-09-01 02:42:34,581 INFO L271 PluginConnector]: Initializing CDTParser... [2023-09-01 02:42:34,581 INFO L275 PluginConnector]: CDTParser initialized [2023-09-01 02:42:34,582 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/popl20-bad-dot-product-alt.wvr.c [2023-09-01 02:42:35,875 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-09-01 02:42:36,091 INFO L351 CDTParser]: Found 1 translation units. [2023-09-01 02:42:36,091 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-bad-dot-product-alt.wvr.c [2023-09-01 02:42:36,098 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/56dc42cb1/7daf5be9d98a496eb7a4ba351586588c/FLAGa73c3df7b [2023-09-01 02:42:36,111 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/56dc42cb1/7daf5be9d98a496eb7a4ba351586588c [2023-09-01 02:42:36,114 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-09-01 02:42:36,115 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-09-01 02:42:36,116 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-09-01 02:42:36,116 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-09-01 02:42:36,124 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-09-01 02:42:36,125 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.09 02:42:36" (1/1) ... [2023-09-01 02:42:36,126 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@102ee708 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 02:42:36, skipping insertion in model container [2023-09-01 02:42:36,126 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.09 02:42:36" (1/1) ... [2023-09-01 02:42:36,131 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-09-01 02:42:36,155 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-09-01 02:42:36,377 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-bad-dot-product-alt.wvr.c[3182,3195] [2023-09-01 02:42:36,391 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-09-01 02:42:36,404 ERROR L324 MainTranslator]: Unsupported Syntax: Found a cast between two array/pointer types of different sizes while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) [2023-09-01 02:42:36,406 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@29af8b5e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 02:42:36, skipping insertion in model container [2023-09-01 02:42:36,406 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-09-01 02:42:36,407 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2023-09-01 02:42:36,409 INFO L158 Benchmark]: Toolchain (without parser) took 292.76ms. Allocated memory is still 71.3MB. Free memory was 48.0MB in the beginning and 37.6MB in the end (delta: 10.4MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-09-01 02:42:36,410 INFO L158 Benchmark]: CDTParser took 0.20ms. Allocated memory is still 71.3MB. Free memory was 48.6MB in the beginning and 48.6MB in the end (delta: 48.5kB). There was no memory consumed. Max. memory is 16.1GB. [2023-09-01 02:42:36,410 INFO L158 Benchmark]: CACSL2BoogieTranslator took 290.88ms. Allocated memory is still 71.3MB. Free memory was 47.8MB in the beginning and 37.6MB in the end (delta: 10.2MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-09-01 02:42:36,412 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20ms. Allocated memory is still 71.3MB. Free memory was 48.6MB in the beginning and 48.6MB in the end (delta: 48.5kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 290.88ms. Allocated memory is still 71.3MB. Free memory was 47.8MB in the beginning and 37.6MB in the end (delta: 10.2MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 94]: Unsupported Syntax Found a cast between two array/pointer types of different sizes while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../../../trunk/examples/svcomp/weaver/popl20-bad-dot-product-alt.wvr.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash e280ea7002eb926faba3195da50aa743246f3289123bb9a1b445dc9aaf8e8f3d --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations BEFORE --- Real Ultimate output --- This is Ultimate 0.2.3-?-b8dbc81 [2023-09-01 02:42:38,067 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-09-01 02:42:38,069 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-09-01 02:42:38,103 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-09-01 02:42:38,105 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-09-01 02:42:38,109 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-09-01 02:42:38,111 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-09-01 02:42:38,114 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-09-01 02:42:38,116 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-09-01 02:42:38,121 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-09-01 02:42:38,122 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-09-01 02:42:38,124 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-09-01 02:42:38,124 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-09-01 02:42:38,126 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-09-01 02:42:38,128 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-09-01 02:42:38,132 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-09-01 02:42:38,133 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-09-01 02:42:38,136 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-09-01 02:42:38,137 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-09-01 02:42:38,141 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-09-01 02:42:38,142 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-09-01 02:42:38,143 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-09-01 02:42:38,144 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-09-01 02:42:38,145 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-09-01 02:42:38,148 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-09-01 02:42:38,148 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-09-01 02:42:38,148 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-09-01 02:42:38,149 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-09-01 02:42:38,150 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-09-01 02:42:38,151 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-09-01 02:42:38,151 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-09-01 02:42:38,152 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-09-01 02:42:38,153 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-09-01 02:42:38,154 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-09-01 02:42:38,156 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-09-01 02:42:38,156 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-09-01 02:42:38,157 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-09-01 02:42:38,157 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-09-01 02:42:38,157 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-09-01 02:42:38,158 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-09-01 02:42:38,159 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-09-01 02:42:38,160 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2023-09-01 02:42:38,197 INFO L113 SettingsManager]: Loading preferences was successful [2023-09-01 02:42:38,198 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-09-01 02:42:38,199 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-09-01 02:42:38,199 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-09-01 02:42:38,200 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-09-01 02:42:38,200 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-09-01 02:42:38,201 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-09-01 02:42:38,201 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-09-01 02:42:38,201 INFO L138 SettingsManager]: * Use SBE=true [2023-09-01 02:42:38,201 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-09-01 02:42:38,202 INFO L138 SettingsManager]: * sizeof long=4 [2023-09-01 02:42:38,202 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-09-01 02:42:38,203 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-09-01 02:42:38,203 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-09-01 02:42:38,203 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-09-01 02:42:38,203 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-09-01 02:42:38,203 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2023-09-01 02:42:38,204 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-09-01 02:42:38,204 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-09-01 02:42:38,204 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-09-01 02:42:38,204 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2023-09-01 02:42:38,204 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-09-01 02:42:38,204 INFO L138 SettingsManager]: * sizeof long double=12 [2023-09-01 02:42:38,205 INFO L138 SettingsManager]: * Use constant arrays=true [2023-09-01 02:42:38,205 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-09-01 02:42:38,205 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-09-01 02:42:38,205 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-09-01 02:42:38,205 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-09-01 02:42:38,206 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-09-01 02:42:38,206 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-09-01 02:42:38,206 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2023-09-01 02:42:38,206 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-09-01 02:42:38,207 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-09-01 02:42:38,207 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-09-01 02:42:38,207 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-09-01 02:42:38,207 INFO L138 SettingsManager]: * Logic for external solver=AUFBV [2023-09-01 02:42:38,207 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-09-01 02:42:38,208 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e280ea7002eb926faba3195da50aa743246f3289123bb9a1b445dc9aaf8e8f3d Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> BEFORE [2023-09-01 02:42:38,554 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-09-01 02:42:38,574 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-09-01 02:42:38,577 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-09-01 02:42:38,579 INFO L271 PluginConnector]: Initializing CDTParser... [2023-09-01 02:42:38,579 INFO L275 PluginConnector]: CDTParser initialized [2023-09-01 02:42:38,580 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/popl20-bad-dot-product-alt.wvr.c [2023-09-01 02:42:39,914 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-09-01 02:42:40,157 INFO L351 CDTParser]: Found 1 translation units. [2023-09-01 02:42:40,158 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-bad-dot-product-alt.wvr.c [2023-09-01 02:42:40,165 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/115056370/d060fc523a2944ab920f0f0d2b2e60d6/FLAG2ba67c00d [2023-09-01 02:42:40,177 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/115056370/d060fc523a2944ab920f0f0d2b2e60d6 [2023-09-01 02:42:40,179 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-09-01 02:42:40,180 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-09-01 02:42:40,183 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-09-01 02:42:40,183 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-09-01 02:42:40,186 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-09-01 02:42:40,187 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.09 02:42:40" (1/1) ... [2023-09-01 02:42:40,188 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@640780fe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 02:42:40, skipping insertion in model container [2023-09-01 02:42:40,190 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.09 02:42:40" (1/1) ... [2023-09-01 02:42:40,196 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-09-01 02:42:40,225 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-09-01 02:42:40,390 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-bad-dot-product-alt.wvr.c[3182,3195] [2023-09-01 02:42:40,415 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-09-01 02:42:40,437 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2023-09-01 02:42:40,446 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-09-01 02:42:40,474 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-bad-dot-product-alt.wvr.c[3182,3195] [2023-09-01 02:42:40,484 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-09-01 02:42:40,495 INFO L203 MainTranslator]: Completed pre-run [2023-09-01 02:42:40,535 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-bad-dot-product-alt.wvr.c[3182,3195] [2023-09-01 02:42:40,549 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-09-01 02:42:40,561 WARN L667 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-09-01 02:42:40,563 WARN L667 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-09-01 02:42:40,568 INFO L208 MainTranslator]: Completed translation [2023-09-01 02:42:40,569 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 02:42:40 WrapperNode [2023-09-01 02:42:40,569 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-09-01 02:42:40,570 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-09-01 02:42:40,570 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-09-01 02:42:40,571 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-09-01 02:42:40,577 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 02:42:40" (1/1) ... [2023-09-01 02:42:40,604 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 02:42:40" (1/1) ... [2023-09-01 02:42:40,646 INFO L138 Inliner]: procedures = 30, calls = 74, calls flagged for inlining = 18, calls inlined = 26, statements flattened = 359 [2023-09-01 02:42:40,648 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-09-01 02:42:40,650 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-09-01 02:42:40,650 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-09-01 02:42:40,651 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-09-01 02:42:40,658 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 02:42:40" (1/1) ... [2023-09-01 02:42:40,659 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 02:42:40" (1/1) ... [2023-09-01 02:42:40,675 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 02:42:40" (1/1) ... [2023-09-01 02:42:40,679 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 02:42:40" (1/1) ... [2023-09-01 02:42:40,690 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 02:42:40" (1/1) ... [2023-09-01 02:42:40,713 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 02:42:40" (1/1) ... [2023-09-01 02:42:40,718 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 02:42:40" (1/1) ... [2023-09-01 02:42:40,727 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 02:42:40" (1/1) ... [2023-09-01 02:42:40,731 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-09-01 02:42:40,733 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-09-01 02:42:40,733 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-09-01 02:42:40,733 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-09-01 02:42:40,734 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 02:42:40" (1/1) ... [2023-09-01 02:42:40,740 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-09-01 02:42:40,750 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 02:42:40,765 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-09-01 02:42:40,769 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-09-01 02:42:40,795 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-09-01 02:42:40,796 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2023-09-01 02:42:40,796 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-09-01 02:42:40,796 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-09-01 02:42:40,796 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2023-09-01 02:42:40,804 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-09-01 02:42:40,805 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-09-01 02:42:40,805 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-09-01 02:42:40,805 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-09-01 02:42:40,805 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-09-01 02:42:40,805 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-09-01 02:42:40,806 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-09-01 02:42:40,806 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-09-01 02:42:40,806 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-09-01 02:42:40,806 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-09-01 02:42:40,807 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-09-01 02:42:40,807 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-09-01 02:42:40,807 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-09-01 02:42:40,807 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2023-09-01 02:42:40,809 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-09-01 02:42:40,958 INFO L236 CfgBuilder]: Building ICFG [2023-09-01 02:42:40,960 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-09-01 02:42:41,902 INFO L277 CfgBuilder]: Performing block encoding [2023-09-01 02:42:42,183 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-09-01 02:42:42,183 INFO L302 CfgBuilder]: Removed 7 assume(true) statements. [2023-09-01 02:42:42,186 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.09 02:42:42 BoogieIcfgContainer [2023-09-01 02:42:42,186 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-09-01 02:42:42,190 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-09-01 02:42:42,190 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-09-01 02:42:42,193 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-09-01 02:42:42,193 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.09 02:42:40" (1/3) ... [2023-09-01 02:42:42,194 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@370fe7d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.09 02:42:42, skipping insertion in model container [2023-09-01 02:42:42,194 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 02:42:40" (2/3) ... [2023-09-01 02:42:42,194 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@370fe7d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.09 02:42:42, skipping insertion in model container [2023-09-01 02:42:42,194 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.09 02:42:42" (3/3) ... [2023-09-01 02:42:42,196 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-bad-dot-product-alt.wvr.c [2023-09-01 02:42:42,210 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-09-01 02:42:42,211 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 70 error locations. [2023-09-01 02:42:42,211 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-09-01 02:42:42,415 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-09-01 02:42:42,464 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 370 places, 395 transitions, 814 flow [2023-09-01 02:42:42,633 INFO L130 PetriNetUnfolder]: 35/392 cut-off events. [2023-09-01 02:42:42,633 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-09-01 02:42:42,642 INFO L83 FinitePrefix]: Finished finitePrefix Result has 405 conditions, 392 events. 35/392 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 1070 event pairs, 0 based on Foata normal form. 0/287 useless extension candidates. Maximal degree in co-relation 302. Up to 2 conditions per place. [2023-09-01 02:42:42,643 INFO L82 GeneralOperation]: Start removeDead. Operand has 370 places, 395 transitions, 814 flow [2023-09-01 02:42:42,669 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 363 places, 388 transitions, 794 flow [2023-09-01 02:42:42,672 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 02:42:42,680 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 363 places, 388 transitions, 794 flow [2023-09-01 02:42:42,683 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 363 places, 388 transitions, 794 flow [2023-09-01 02:42:42,683 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 363 places, 388 transitions, 794 flow [2023-09-01 02:42:42,748 INFO L130 PetriNetUnfolder]: 35/388 cut-off events. [2023-09-01 02:42:42,749 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-09-01 02:42:42,754 INFO L83 FinitePrefix]: Finished finitePrefix Result has 401 conditions, 388 events. 35/388 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 1064 event pairs, 0 based on Foata normal form. 0/284 useless extension candidates. Maximal degree in co-relation 302. Up to 2 conditions per place. [2023-09-01 02:42:42,766 INFO L119 LiptonReduction]: Number of co-enabled transitions 24090 [2023-09-01 02:44:11,390 INFO L134 LiptonReduction]: Checked pairs total: 37816 [2023-09-01 02:44:11,390 INFO L136 LiptonReduction]: Total number of compositions: 477 [2023-09-01 02:44:11,403 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-09-01 02:44:11,418 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@7ef95f70, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 02:44:11,418 INFO L358 AbstractCegarLoop]: Starting to check reachability of 121 error locations. [2023-09-01 02:44:11,420 INFO L130 PetriNetUnfolder]: 1/2 cut-off events. [2023-09-01 02:44:11,420 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-09-01 02:44:11,421 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 02:44:11,421 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-09-01 02:44:11,422 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 118 more)] === [2023-09-01 02:44:11,426 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 02:44:11,426 INFO L85 PathProgramCache]: Analyzing trace with hash 58542, now seen corresponding path program 1 times [2023-09-01 02:44:11,435 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-09-01 02:44:11,436 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [841794224] [2023-09-01 02:44:11,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 02:44:11,437 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-09-01 02:44:11,437 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-09-01 02:44:11,439 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-09-01 02:44:11,441 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2023-09-01 02:44:11,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 02:44:11,540 INFO L263 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 3 conjunts are in the unsatisfiable core [2023-09-01 02:44:11,544 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 02:44:11,682 INFO L321 Elim1Store]: treesize reduction 84, result has 33.9 percent of original size [2023-09-01 02:44:11,683 INFO L350 Elim1Store]: Elim1 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 3 case distinctions, treesize of input 15 treesize of output 50 [2023-09-01 02:44:11,709 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 02:44:11,716 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-09-01 02:44:11,717 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-09-01 02:44:11,718 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [841794224] [2023-09-01 02:44:11,718 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [841794224] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 02:44:11,718 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 02:44:11,719 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-09-01 02:44:11,720 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1090370633] [2023-09-01 02:44:11,721 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 02:44:11,727 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 02:44:11,745 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-09-01 02:44:11,767 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 02:44:11,768 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-09-01 02:44:12,084 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 333 out of 872 [2023-09-01 02:44:12,088 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 110 places, 110 transitions, 238 flow. Second operand has 3 states, 3 states have (on average 333.6666666666667) internal successors, (1001), 3 states have internal predecessors, (1001), 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) [2023-09-01 02:44:12,088 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 02:44:12,092 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 333 of 872 [2023-09-01 02:44:12,093 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 02:44:23,396 INFO L130 PetriNetUnfolder]: 70595/88893 cut-off events. [2023-09-01 02:44:23,396 INFO L131 PetriNetUnfolder]: For 857/857 co-relation queries the response was YES. [2023-09-01 02:44:23,524 INFO L83 FinitePrefix]: Finished finitePrefix Result has 178713 conditions, 88893 events. 70595/88893 cut-off events. For 857/857 co-relation queries the response was YES. Maximal size of possible extension queue 6286. Compared 526214 event pairs, 44649 based on Foata normal form. 0/19155 useless extension candidates. Maximal degree in co-relation 171375. Up to 88832 conditions per place. [2023-09-01 02:44:24,078 INFO L137 encePairwiseOnDemand]: 850/872 looper letters, 85 selfloop transitions, 1 changer transitions 0/89 dead transitions. [2023-09-01 02:44:24,078 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 89 transitions, 368 flow [2023-09-01 02:44:24,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 02:44:24,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 02:44:24,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1106 transitions. [2023-09-01 02:44:24,103 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.422782874617737 [2023-09-01 02:44:24,106 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1106 transitions. [2023-09-01 02:44:24,106 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1106 transitions. [2023-09-01 02:44:24,110 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 02:44:24,113 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1106 transitions. [2023-09-01 02:44:24,120 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 368.6666666666667) internal successors, (1106), 3 states have internal predecessors, (1106), 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) [2023-09-01 02:44:24,129 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 872.0) internal successors, (3488), 4 states have internal predecessors, (3488), 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) [2023-09-01 02:44:24,131 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 872.0) internal successors, (3488), 4 states have internal predecessors, (3488), 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) [2023-09-01 02:44:24,133 INFO L175 Difference]: Start difference. First operand has 110 places, 110 transitions, 238 flow. Second operand 3 states and 1106 transitions. [2023-09-01 02:44:24,134 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 89 transitions, 368 flow [2023-09-01 02:44:24,227 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 89 transitions, 356 flow, removed 0 selfloop flow, removed 6 redundant places. [2023-09-01 02:44:24,234 INFO L231 Difference]: Finished difference. Result has 86 places, 89 transitions, 186 flow [2023-09-01 02:44:24,236 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=872, PETRI_DIFFERENCE_MINUEND_FLOW=184, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=89, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=88, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=186, PETRI_PLACES=86, PETRI_TRANSITIONS=89} [2023-09-01 02:44:24,240 INFO L281 CegarLoopForPetriNet]: 110 programPoint places, -24 predicate places. [2023-09-01 02:44:24,240 INFO L495 AbstractCegarLoop]: Abstraction has has 86 places, 89 transitions, 186 flow [2023-09-01 02:44:24,241 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 333.6666666666667) internal successors, (1001), 3 states have internal predecessors, (1001), 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) [2023-09-01 02:44:24,241 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 02:44:24,241 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-09-01 02:44:24,260 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2023-09-01 02:44:24,460 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-09-01 02:44:24,460 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 118 more)] === [2023-09-01 02:44:24,461 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 02:44:24,461 INFO L85 PathProgramCache]: Analyzing trace with hash 58541, now seen corresponding path program 1 times [2023-09-01 02:44:24,461 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-09-01 02:44:24,462 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [359926510] [2023-09-01 02:44:24,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 02:44:24,462 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-09-01 02:44:24,462 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-09-01 02:44:24,471 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-09-01 02:44:24,477 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2023-09-01 02:44:24,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 02:44:24,559 INFO L263 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 9 conjunts are in the unsatisfiable core [2023-09-01 02:44:24,560 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 02:44:24,701 INFO L321 Elim1Store]: treesize reduction 78, result has 32.2 percent of original size [2023-09-01 02:44:24,702 INFO L350 Elim1Store]: Elim1 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 3 case distinctions, treesize of input 17 treesize of output 44 [2023-09-01 02:44:24,744 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 02:44:24,745 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-09-01 02:44:24,745 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-09-01 02:44:24,745 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [359926510] [2023-09-01 02:44:24,745 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [359926510] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 02:44:24,745 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 02:44:24,746 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-09-01 02:44:24,746 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1929215776] [2023-09-01 02:44:24,746 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 02:44:24,747 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 02:44:24,747 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-09-01 02:44:24,748 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 02:44:24,748 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-09-01 02:44:25,246 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 332 out of 872 [2023-09-01 02:44:25,248 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 89 transitions, 186 flow. Second operand has 3 states, 3 states have (on average 332.6666666666667) internal successors, (998), 3 states have internal predecessors, (998), 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) [2023-09-01 02:44:25,248 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 02:44:25,248 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 332 of 872 [2023-09-01 02:44:25,248 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 02:44:42,865 INFO L130 PetriNetUnfolder]: 141054/177647 cut-off events. [2023-09-01 02:44:42,865 INFO L131 PetriNetUnfolder]: For 268/268 co-relation queries the response was YES. [2023-09-01 02:44:42,999 INFO L83 FinitePrefix]: Finished finitePrefix Result has 355932 conditions, 177647 events. 141054/177647 cut-off events. For 268/268 co-relation queries the response was YES. Maximal size of possible extension queue 10486. Compared 1104620 event pairs, 89218 based on Foata normal form. 0/38483 useless extension candidates. Maximal degree in co-relation 355926. Up to 88834 conditions per place. [2023-09-01 02:44:43,742 INFO L137 encePairwiseOnDemand]: 862/872 looper letters, 161 selfloop transitions, 7 changer transitions 0/171 dead transitions. [2023-09-01 02:44:43,743 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 171 transitions, 692 flow [2023-09-01 02:44:43,744 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 02:44:43,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 02:44:43,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1167 transitions. [2023-09-01 02:44:43,747 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4461009174311927 [2023-09-01 02:44:43,747 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1167 transitions. [2023-09-01 02:44:43,748 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1167 transitions. [2023-09-01 02:44:43,748 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 02:44:43,748 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1167 transitions. [2023-09-01 02:44:43,754 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 389.0) internal successors, (1167), 3 states have internal predecessors, (1167), 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) [2023-09-01 02:44:43,759 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 872.0) internal successors, (3488), 4 states have internal predecessors, (3488), 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) [2023-09-01 02:44:43,761 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 872.0) internal successors, (3488), 4 states have internal predecessors, (3488), 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) [2023-09-01 02:44:43,761 INFO L175 Difference]: Start difference. First operand has 86 places, 89 transitions, 186 flow. Second operand 3 states and 1167 transitions. [2023-09-01 02:44:43,762 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 171 transitions, 692 flow [2023-09-01 02:44:43,764 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 171 transitions, 691 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-09-01 02:44:43,767 INFO L231 Difference]: Finished difference. Result has 89 places, 95 transitions, 243 flow [2023-09-01 02:44:43,768 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=872, PETRI_DIFFERENCE_MINUEND_FLOW=185, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=89, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=243, PETRI_PLACES=89, PETRI_TRANSITIONS=95} [2023-09-01 02:44:43,769 INFO L281 CegarLoopForPetriNet]: 110 programPoint places, -21 predicate places. [2023-09-01 02:44:43,770 INFO L495 AbstractCegarLoop]: Abstraction has has 89 places, 95 transitions, 243 flow [2023-09-01 02:44:43,771 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 332.6666666666667) internal successors, (998), 3 states have internal predecessors, (998), 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) [2023-09-01 02:44:43,772 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 02:44:43,772 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-09-01 02:44:43,782 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Ended with exit code 0 [2023-09-01 02:44:43,980 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-09-01 02:44:43,981 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 118 more)] === [2023-09-01 02:44:43,982 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 02:44:43,982 INFO L85 PathProgramCache]: Analyzing trace with hash 1820519, now seen corresponding path program 1 times [2023-09-01 02:44:43,982 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-09-01 02:44:43,982 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1261663004] [2023-09-01 02:44:43,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 02:44:43,983 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-09-01 02:44:43,983 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-09-01 02:44:43,984 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-09-01 02:44:43,987 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2023-09-01 02:44:44,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 02:44:44,072 INFO L263 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 11 conjunts are in the unsatisfiable core [2023-09-01 02:44:44,073 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 02:44:44,189 INFO L321 Elim1Store]: treesize reduction 78, result has 32.2 percent of original size [2023-09-01 02:44:44,190 INFO L350 Elim1Store]: Elim1 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 3 case distinctions, treesize of input 17 treesize of output 44 [2023-09-01 02:44:44,262 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 02:44:44,262 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 02:44:44,462 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 02:44:44,462 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-09-01 02:44:44,463 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1261663004] [2023-09-01 02:44:44,463 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1261663004] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 02:44:44,463 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-09-01 02:44:44,463 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2] total 4 [2023-09-01 02:44:44,463 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1737043994] [2023-09-01 02:44:44,463 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-09-01 02:44:44,464 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-09-01 02:44:44,464 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-09-01 02:44:44,464 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-09-01 02:44:44,465 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-09-01 02:44:46,632 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 317 out of 872 [2023-09-01 02:44:46,635 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 95 transitions, 243 flow. Second operand has 6 states, 6 states have (on average 318.0) internal successors, (1908), 6 states have internal predecessors, (1908), 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) [2023-09-01 02:44:46,635 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 02:44:46,635 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 317 of 872 [2023-09-01 02:44:46,636 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 02:44:48,028 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.04s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-09-01 02:44:49,207 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.02s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-09-01 02:45:15,783 INFO L130 PetriNetUnfolder]: 211523/266417 cut-off events. [2023-09-01 02:45:15,783 INFO L131 PetriNetUnfolder]: For 388/388 co-relation queries the response was YES. [2023-09-01 02:45:16,080 INFO L83 FinitePrefix]: Finished finitePrefix Result has 533830 conditions, 266417 events. 211523/266417 cut-off events. For 388/388 co-relation queries the response was YES. Maximal size of possible extension queue 16345. Compared 1731924 event pairs, 133787 based on Foata normal form. 0/57830 useless extension candidates. Maximal degree in co-relation 533821. Up to 88836 conditions per place. [2023-09-01 02:45:16,916 INFO L137 encePairwiseOnDemand]: 859/872 looper letters, 237 selfloop transitions, 29 changer transitions 0/269 dead transitions. [2023-09-01 02:45:16,916 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 269 transitions, 1175 flow [2023-09-01 02:45:16,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-09-01 02:45:16,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-09-01 02:45:16,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 2177 transitions. [2023-09-01 02:45:16,922 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4160932721712538 [2023-09-01 02:45:16,922 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 2177 transitions. [2023-09-01 02:45:16,922 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 2177 transitions. [2023-09-01 02:45:16,924 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 02:45:16,924 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 2177 transitions. [2023-09-01 02:45:16,929 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 362.8333333333333) internal successors, (2177), 6 states have internal predecessors, (2177), 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) [2023-09-01 02:45:16,937 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 872.0) internal successors, (6104), 7 states have internal predecessors, (6104), 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) [2023-09-01 02:45:16,939 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 872.0) internal successors, (6104), 7 states have internal predecessors, (6104), 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) [2023-09-01 02:45:16,940 INFO L175 Difference]: Start difference. First operand has 89 places, 95 transitions, 243 flow. Second operand 6 states and 2177 transitions. [2023-09-01 02:45:16,940 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 269 transitions, 1175 flow [2023-09-01 02:45:16,942 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 269 transitions, 1153 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-09-01 02:45:16,945 INFO L231 Difference]: Finished difference. Result has 96 places, 117 transitions, 448 flow [2023-09-01 02:45:16,945 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=872, PETRI_DIFFERENCE_MINUEND_FLOW=229, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=95, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=448, PETRI_PLACES=96, PETRI_TRANSITIONS=117} [2023-09-01 02:45:16,946 INFO L281 CegarLoopForPetriNet]: 110 programPoint places, -14 predicate places. [2023-09-01 02:45:16,946 INFO L495 AbstractCegarLoop]: Abstraction has has 96 places, 117 transitions, 448 flow [2023-09-01 02:45:16,947 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 318.0) internal successors, (1908), 6 states have internal predecessors, (1908), 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) [2023-09-01 02:45:16,947 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 02:45:16,947 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-09-01 02:45:16,959 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2023-09-01 02:45:17,156 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-09-01 02:45:17,157 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 118 more)] === [2023-09-01 02:45:17,157 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 02:45:17,157 INFO L85 PathProgramCache]: Analyzing trace with hash 56536170, now seen corresponding path program 1 times [2023-09-01 02:45:17,158 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-09-01 02:45:17,158 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [201132762] [2023-09-01 02:45:17,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 02:45:17,158 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-09-01 02:45:17,158 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-09-01 02:45:17,159 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-09-01 02:45:17,160 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2023-09-01 02:45:17,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 02:45:17,236 INFO L263 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 10 conjunts are in the unsatisfiable core [2023-09-01 02:45:17,237 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 02:45:17,281 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 02:45:17,281 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-09-01 02:45:17,281 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-09-01 02:45:17,282 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [201132762] [2023-09-01 02:45:17,282 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [201132762] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 02:45:17,282 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 02:45:17,282 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-09-01 02:45:17,282 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [779407621] [2023-09-01 02:45:17,282 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 02:45:17,283 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-09-01 02:45:17,283 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-09-01 02:45:17,284 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-09-01 02:45:17,285 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-09-01 02:45:17,480 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 334 out of 872 [2023-09-01 02:45:17,481 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 117 transitions, 448 flow. Second operand has 4 states, 4 states have (on average 335.0) internal successors, (1340), 4 states have internal predecessors, (1340), 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) [2023-09-01 02:45:17,481 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 02:45:17,481 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 334 of 872 [2023-09-01 02:45:17,481 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 02:45:44,021 INFO L130 PetriNetUnfolder]: 211802/266713 cut-off events. [2023-09-01 02:45:44,021 INFO L131 PetriNetUnfolder]: For 462/462 co-relation queries the response was YES. [2023-09-01 02:45:44,472 INFO L83 FinitePrefix]: Finished finitePrefix Result has 534570 conditions, 266713 events. 211802/266713 cut-off events. For 462/462 co-relation queries the response was YES. Maximal size of possible extension queue 16749. Compared 1743453 event pairs, 133947 based on Foata normal form. 5/57509 useless extension candidates. Maximal degree in co-relation 534557. Up to 266498 conditions per place. [2023-09-01 02:45:45,506 INFO L137 encePairwiseOnDemand]: 863/872 looper letters, 124 selfloop transitions, 10 changer transitions 0/137 dead transitions. [2023-09-01 02:45:45,506 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 137 transitions, 849 flow [2023-09-01 02:45:45,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-09-01 02:45:45,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-09-01 02:45:45,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1775 transitions. [2023-09-01 02:45:45,512 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40711009174311924 [2023-09-01 02:45:45,512 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1775 transitions. [2023-09-01 02:45:45,512 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1775 transitions. [2023-09-01 02:45:45,513 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 02:45:45,513 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1775 transitions. [2023-09-01 02:45:45,517 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 355.0) internal successors, (1775), 5 states have internal predecessors, (1775), 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) [2023-09-01 02:45:45,524 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 872.0) internal successors, (5232), 6 states have internal predecessors, (5232), 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) [2023-09-01 02:45:45,526 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 872.0) internal successors, (5232), 6 states have internal predecessors, (5232), 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) [2023-09-01 02:45:45,526 INFO L175 Difference]: Start difference. First operand has 96 places, 117 transitions, 448 flow. Second operand 5 states and 1775 transitions. [2023-09-01 02:45:45,527 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 137 transitions, 849 flow [2023-09-01 02:45:45,529 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 137 transitions, 803 flow, removed 15 selfloop flow, removed 1 redundant places. [2023-09-01 02:45:45,531 INFO L231 Difference]: Finished difference. Result has 102 places, 119 transitions, 474 flow [2023-09-01 02:45:45,532 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=872, PETRI_DIFFERENCE_MINUEND_FLOW=413, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=117, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=107, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=474, PETRI_PLACES=102, PETRI_TRANSITIONS=119} [2023-09-01 02:45:45,532 INFO L281 CegarLoopForPetriNet]: 110 programPoint places, -8 predicate places. [2023-09-01 02:45:45,532 INFO L495 AbstractCegarLoop]: Abstraction has has 102 places, 119 transitions, 474 flow [2023-09-01 02:45:45,533 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 335.0) internal successors, (1340), 4 states have internal predecessors, (1340), 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) [2023-09-01 02:45:45,533 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 02:45:45,534 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-09-01 02:45:45,546 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2023-09-01 02:45:45,743 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-09-01 02:45:45,744 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 118 more)] === [2023-09-01 02:45:45,744 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 02:45:45,744 INFO L85 PathProgramCache]: Analyzing trace with hash 1752623611, now seen corresponding path program 1 times [2023-09-01 02:45:45,744 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-09-01 02:45:45,744 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2064260008] [2023-09-01 02:45:45,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 02:45:45,745 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-09-01 02:45:45,745 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-09-01 02:45:45,746 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-09-01 02:45:45,747 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2023-09-01 02:45:45,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 02:45:45,837 INFO L263 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 5 conjunts are in the unsatisfiable core [2023-09-01 02:45:45,838 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 02:45:45,844 INFO L350 Elim1Store]: Elim1 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 7 [2023-09-01 02:45:45,867 INFO L321 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2023-09-01 02:45:45,867 INFO L350 Elim1Store]: Elim1 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 14 treesize of output 20 [2023-09-01 02:45:45,877 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 02:45:45,877 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-09-01 02:45:45,877 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-09-01 02:45:45,878 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2064260008] [2023-09-01 02:45:45,878 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2064260008] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 02:45:45,878 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 02:45:45,878 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-09-01 02:45:45,878 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [474560722] [2023-09-01 02:45:45,878 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 02:45:45,879 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 02:45:45,879 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-09-01 02:45:45,879 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 02:45:45,880 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-09-01 02:45:46,161 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 341 out of 872 [2023-09-01 02:45:46,163 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 119 transitions, 474 flow. Second operand has 3 states, 3 states have (on average 342.6666666666667) internal successors, (1028), 3 states have internal predecessors, (1028), 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) [2023-09-01 02:45:46,163 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 02:45:46,163 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 341 of 872 [2023-09-01 02:45:46,163 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 02:46:08,281 INFO L130 PetriNetUnfolder]: 174349/219666 cut-off events. [2023-09-01 02:46:08,282 INFO L131 PetriNetUnfolder]: For 417/417 co-relation queries the response was YES. [2023-09-01 02:46:08,783 INFO L83 FinitePrefix]: Finished finitePrefix Result has 440357 conditions, 219666 events. 174349/219666 cut-off events. For 417/417 co-relation queries the response was YES. Maximal size of possible extension queue 13363. Compared 1408558 event pairs, 109404 based on Foata normal form. 0/49600 useless extension candidates. Maximal degree in co-relation 440340. Up to 219465 conditions per place. [2023-09-01 02:46:09,488 INFO L137 encePairwiseOnDemand]: 867/872 looper letters, 104 selfloop transitions, 6 changer transitions 0/113 dead transitions. [2023-09-01 02:46:09,488 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 113 transitions, 670 flow [2023-09-01 02:46:09,489 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 02:46:09,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 02:46:09,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1109 transitions. [2023-09-01 02:46:09,491 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4239296636085627 [2023-09-01 02:46:09,491 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1109 transitions. [2023-09-01 02:46:09,491 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1109 transitions. [2023-09-01 02:46:09,491 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 02:46:09,491 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1109 transitions. [2023-09-01 02:46:09,493 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 369.6666666666667) internal successors, (1109), 3 states have internal predecessors, (1109), 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) [2023-09-01 02:46:09,497 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 872.0) internal successors, (3488), 4 states have internal predecessors, (3488), 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) [2023-09-01 02:46:09,498 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 872.0) internal successors, (3488), 4 states have internal predecessors, (3488), 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) [2023-09-01 02:46:09,498 INFO L175 Difference]: Start difference. First operand has 102 places, 119 transitions, 474 flow. Second operand 3 states and 1109 transitions. [2023-09-01 02:46:09,498 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 113 transitions, 670 flow [2023-09-01 02:46:09,500 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 113 transitions, 668 flow, removed 1 selfloop flow, removed 0 redundant places. [2023-09-01 02:46:09,502 INFO L231 Difference]: Finished difference. Result has 100 places, 113 transitions, 460 flow [2023-09-01 02:46:09,502 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=872, PETRI_DIFFERENCE_MINUEND_FLOW=448, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=113, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=107, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=460, PETRI_PLACES=100, PETRI_TRANSITIONS=113} [2023-09-01 02:46:09,503 INFO L281 CegarLoopForPetriNet]: 110 programPoint places, -10 predicate places. [2023-09-01 02:46:09,503 INFO L495 AbstractCegarLoop]: Abstraction has has 100 places, 113 transitions, 460 flow [2023-09-01 02:46:09,503 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 342.6666666666667) internal successors, (1028), 3 states have internal predecessors, (1028), 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) [2023-09-01 02:46:09,503 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 02:46:09,504 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-09-01 02:46:09,513 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2023-09-01 02:46:09,712 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-09-01 02:46:09,713 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 118 more)] === [2023-09-01 02:46:09,713 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 02:46:09,713 INFO L85 PathProgramCache]: Analyzing trace with hash 1752623610, now seen corresponding path program 1 times [2023-09-01 02:46:09,714 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-09-01 02:46:09,714 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1960961756] [2023-09-01 02:46:09,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 02:46:09,714 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-09-01 02:46:09,714 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-09-01 02:46:09,715 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-09-01 02:46:09,716 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2023-09-01 02:46:09,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 02:46:09,800 INFO L263 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 13 conjunts are in the unsatisfiable core [2023-09-01 02:46:09,801 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 02:46:09,816 INFO L350 Elim1Store]: Elim1 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 7 [2023-09-01 02:46:09,823 INFO L350 Elim1Store]: Elim1 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 8 treesize of output 7 [2023-09-01 02:46:09,866 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-09-01 02:46:09,867 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-09-01 02:46:09,886 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2023-09-01 02:46:09,887 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2023-09-01 02:46:09,911 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 02:46:09,911 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-09-01 02:46:09,911 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-09-01 02:46:09,912 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1960961756] [2023-09-01 02:46:09,912 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1960961756] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 02:46:09,912 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 02:46:09,912 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-09-01 02:46:09,912 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [333029551] [2023-09-01 02:46:09,912 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 02:46:09,913 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-09-01 02:46:09,915 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-09-01 02:46:09,917 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-09-01 02:46:09,919 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-09-01 02:46:10,815 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 331 out of 872 [2023-09-01 02:46:10,816 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 113 transitions, 460 flow. Second operand has 4 states, 4 states have (on average 332.25) internal successors, (1329), 4 states have internal predecessors, (1329), 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) [2023-09-01 02:46:10,817 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 02:46:10,817 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 331 of 872 [2023-09-01 02:46:10,817 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand