./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/valid-memsafety.prp --file ../../../trunk/examples/svcomp/goblint-regression/28-race_reach_92-evilcollapse_racing.i --full-output --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations TOGETHER --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/goblint-regression/28-race_reach_92-evilcollapse_racing.i -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 dda5467f7679a243042daf02aae11f74f39b907c2525dfc042cb8ad8b69dcfc9 --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations TOGETHER --- Real Ultimate output --- This is Ultimate 0.2.3-?-b8dbc81 [2023-08-30 04:28:24,028 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-08-30 04:28:24,031 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-08-30 04:28:24,072 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-08-30 04:28:24,073 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-08-30 04:28:24,076 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-08-30 04:28:24,078 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-08-30 04:28:24,081 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-08-30 04:28:24,082 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-08-30 04:28:24,084 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-08-30 04:28:24,085 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-08-30 04:28:24,086 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-08-30 04:28:24,086 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-08-30 04:28:24,088 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-08-30 04:28:24,089 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-08-30 04:28:24,092 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-08-30 04:28:24,093 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-08-30 04:28:24,093 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-08-30 04:28:24,095 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-08-30 04:28:24,096 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-08-30 04:28:24,098 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-08-30 04:28:24,099 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-08-30 04:28:24,100 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-08-30 04:28:24,101 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-08-30 04:28:24,103 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-08-30 04:28:24,104 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-08-30 04:28:24,104 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-08-30 04:28:24,105 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-08-30 04:28:24,105 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-08-30 04:28:24,106 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-08-30 04:28:24,106 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-08-30 04:28:24,107 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-08-30 04:28:24,107 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-08-30 04:28:24,108 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-08-30 04:28:24,109 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-08-30 04:28:24,109 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-08-30 04:28:24,110 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-08-30 04:28:24,110 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-08-30 04:28:24,110 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-08-30 04:28:24,111 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-08-30 04:28:24,112 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-08-30 04:28:24,113 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2023-08-30 04:28:24,149 INFO L113 SettingsManager]: Loading preferences was successful [2023-08-30 04:28:24,150 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-30 04:28:24,150 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-30 04:28:24,150 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-30 04:28:24,151 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-30 04:28:24,151 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-30 04:28:24,152 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-30 04:28:24,152 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-08-30 04:28:24,152 INFO L138 SettingsManager]: * Use SBE=true [2023-08-30 04:28:24,152 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-30 04:28:24,153 INFO L138 SettingsManager]: * sizeof long=4 [2023-08-30 04:28:24,153 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-08-30 04:28:24,153 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-30 04:28:24,153 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-08-30 04:28:24,153 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-08-30 04:28:24,153 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-08-30 04:28:24,154 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2023-08-30 04:28:24,154 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-08-30 04:28:24,154 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-30 04:28:24,154 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-08-30 04:28:24,154 INFO L138 SettingsManager]: * sizeof long double=12 [2023-08-30 04:28:24,155 INFO L138 SettingsManager]: * Use constant arrays=true [2023-08-30 04:28:24,155 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-30 04:28:24,155 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-30 04:28:24,155 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-30 04:28:24,155 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 04:28:24,156 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-30 04:28:24,156 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-30 04:28:24,156 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-30 04:28:24,156 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-30 04:28:24,156 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-30 04:28:24,156 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-30 04:28:24,157 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-30 04:28:24,157 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-30 04:28:24,157 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> dda5467f7679a243042daf02aae11f74f39b907c2525dfc042cb8ad8b69dcfc9 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> TOGETHER [2023-08-30 04:28:24,431 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-30 04:28:24,447 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-30 04:28:24,449 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-30 04:28:24,450 INFO L271 PluginConnector]: Initializing CDTParser... [2023-08-30 04:28:24,450 INFO L275 PluginConnector]: CDTParser initialized [2023-08-30 04:28:24,451 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/28-race_reach_92-evilcollapse_racing.i [2023-08-30 04:28:25,577 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-08-30 04:28:25,889 INFO L351 CDTParser]: Found 1 translation units. [2023-08-30 04:28:25,890 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_92-evilcollapse_racing.i [2023-08-30 04:28:25,911 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2a5de4f9a/e7f571bd49f74284bbfbceb722114df2/FLAG63039e0a5 [2023-08-30 04:28:25,936 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2a5de4f9a/e7f571bd49f74284bbfbceb722114df2 [2023-08-30 04:28:25,938 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-30 04:28:25,939 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-08-30 04:28:25,943 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-30 04:28:25,943 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-30 04:28:25,946 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-30 04:28:25,947 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 04:28:25" (1/1) ... [2023-08-30 04:28:25,949 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@11c8cf3c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 04:28:25, skipping insertion in model container [2023-08-30 04:28:25,949 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 04:28:25" (1/1) ... [2023-08-30 04:28:25,954 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-08-30 04:28:25,997 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-30 04:28:26,340 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_92-evilcollapse_racing.i[47038,47051] [2023-08-30 04:28:26,362 WARN L1562 CHandler]: Possible shadowing of function new [2023-08-30 04:28:26,362 WARN L1562 CHandler]: Possible shadowing of function new [2023-08-30 04:28:26,363 WARN L1562 CHandler]: Possible shadowing of function new [2023-08-30 04:28:26,363 WARN L1562 CHandler]: Possible shadowing of function new [2023-08-30 04:28:26,393 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 04:28:26,417 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) [2023-08-30 04:28:26,418 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@220d644f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 04:28:26, skipping insertion in model container [2023-08-30 04:28:26,418 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-30 04:28:26,419 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2023-08-30 04:28:26,420 INFO L158 Benchmark]: Toolchain (without parser) took 480.23ms. Allocated memory is still 73.4MB. Free memory was 48.8MB in the beginning and 49.9MB in the end (delta: -1.1MB). Peak memory consumption was 19.0MB. Max. memory is 16.1GB. [2023-08-30 04:28:26,420 INFO L158 Benchmark]: CDTParser took 0.17ms. Allocated memory is still 52.4MB. Free memory was 30.7MB in the beginning and 30.7MB in the end (delta: 33.5kB). There was no memory consumed. Max. memory is 16.1GB. [2023-08-30 04:28:26,421 INFO L158 Benchmark]: CACSL2BoogieTranslator took 475.72ms. Allocated memory is still 73.4MB. Free memory was 48.7MB in the beginning and 49.9MB in the end (delta: -1.2MB). Peak memory consumption was 19.0MB. Max. memory is 16.1GB. [2023-08-30 04:28:26,422 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17ms. Allocated memory is still 52.4MB. Free memory was 30.7MB in the beginning and 30.7MB in the end (delta: 33.5kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 475.72ms. Allocated memory is still 73.4MB. Free memory was 48.7MB in the beginning and 49.9MB in the end (delta: -1.2MB). Peak memory consumption was 19.0MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 1051]: 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/goblint-regression/28-race_reach_92-evilcollapse_racing.i -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 dda5467f7679a243042daf02aae11f74f39b907c2525dfc042cb8ad8b69dcfc9 --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations TOGETHER --- Real Ultimate output --- This is Ultimate 0.2.3-?-b8dbc81 [2023-08-30 04:28:28,112 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-08-30 04:28:28,114 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-08-30 04:28:28,156 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-08-30 04:28:28,156 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-08-30 04:28:28,159 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-08-30 04:28:28,161 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-08-30 04:28:28,164 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-08-30 04:28:28,166 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-08-30 04:28:28,170 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-08-30 04:28:28,171 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-08-30 04:28:28,173 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-08-30 04:28:28,173 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-08-30 04:28:28,175 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-08-30 04:28:28,176 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-08-30 04:28:28,181 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-08-30 04:28:28,182 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-08-30 04:28:28,184 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-08-30 04:28:28,186 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-08-30 04:28:28,190 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-08-30 04:28:28,202 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-08-30 04:28:28,203 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-08-30 04:28:28,203 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-08-30 04:28:28,204 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-08-30 04:28:28,210 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-08-30 04:28:28,211 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-08-30 04:28:28,211 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-08-30 04:28:28,213 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-08-30 04:28:28,213 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-08-30 04:28:28,214 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-08-30 04:28:28,214 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-08-30 04:28:28,216 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-08-30 04:28:28,218 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-08-30 04:28:28,218 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-08-30 04:28:28,219 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-08-30 04:28:28,219 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-08-30 04:28:28,220 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-08-30 04:28:28,220 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-08-30 04:28:28,220 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-08-30 04:28:28,221 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-08-30 04:28:28,222 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-08-30 04:28:28,223 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2023-08-30 04:28:28,254 INFO L113 SettingsManager]: Loading preferences was successful [2023-08-30 04:28:28,255 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-30 04:28:28,256 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-30 04:28:28,256 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-30 04:28:28,257 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-30 04:28:28,257 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-30 04:28:28,258 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-30 04:28:28,258 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-08-30 04:28:28,258 INFO L138 SettingsManager]: * Use SBE=true [2023-08-30 04:28:28,259 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-30 04:28:28,259 INFO L138 SettingsManager]: * sizeof long=4 [2023-08-30 04:28:28,260 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-08-30 04:28:28,260 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-30 04:28:28,260 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-08-30 04:28:28,260 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-08-30 04:28:28,260 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-08-30 04:28:28,261 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2023-08-30 04:28:28,261 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-08-30 04:28:28,261 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-30 04:28:28,261 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-08-30 04:28:28,262 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2023-08-30 04:28:28,262 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-08-30 04:28:28,262 INFO L138 SettingsManager]: * sizeof long double=12 [2023-08-30 04:28:28,262 INFO L138 SettingsManager]: * Use constant arrays=true [2023-08-30 04:28:28,262 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-30 04:28:28,263 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-30 04:28:28,263 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-30 04:28:28,263 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 04:28:28,263 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-30 04:28:28,264 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-30 04:28:28,264 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2023-08-30 04:28:28,264 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-08-30 04:28:28,264 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-30 04:28:28,265 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-30 04:28:28,265 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-30 04:28:28,265 INFO L138 SettingsManager]: * Logic for external solver=AUFBV [2023-08-30 04:28:28,265 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-30 04:28:28,266 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> dda5467f7679a243042daf02aae11f74f39b907c2525dfc042cb8ad8b69dcfc9 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> TOGETHER [2023-08-30 04:28:28,572 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-30 04:28:28,589 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-30 04:28:28,592 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-30 04:28:28,592 INFO L271 PluginConnector]: Initializing CDTParser... [2023-08-30 04:28:28,593 INFO L275 PluginConnector]: CDTParser initialized [2023-08-30 04:28:28,594 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/28-race_reach_92-evilcollapse_racing.i [2023-08-30 04:28:29,804 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-08-30 04:28:30,093 INFO L351 CDTParser]: Found 1 translation units. [2023-08-30 04:28:30,093 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_92-evilcollapse_racing.i [2023-08-30 04:28:30,115 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7e96022a4/68ad554d061c417c8f01f34b8cc5c9f7/FLAGabc3a9417 [2023-08-30 04:28:30,138 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7e96022a4/68ad554d061c417c8f01f34b8cc5c9f7 [2023-08-30 04:28:30,140 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-30 04:28:30,141 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-08-30 04:28:30,144 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-30 04:28:30,144 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-30 04:28:30,147 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-30 04:28:30,147 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 04:28:30" (1/1) ... [2023-08-30 04:28:30,149 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3d572246 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 04:28:30, skipping insertion in model container [2023-08-30 04:28:30,149 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 04:28:30" (1/1) ... [2023-08-30 04:28:30,154 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-08-30 04:28:30,205 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-30 04:28:30,682 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_92-evilcollapse_racing.i[47038,47051] [2023-08-30 04:28:30,734 WARN L1562 CHandler]: Possible shadowing of function new [2023-08-30 04:28:30,735 WARN L1562 CHandler]: Possible shadowing of function new [2023-08-30 04:28:30,735 WARN L1562 CHandler]: Possible shadowing of function new [2023-08-30 04:28:30,736 WARN L1562 CHandler]: Possible shadowing of function new [2023-08-30 04:28:30,757 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 04:28:30,772 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2023-08-30 04:28:30,783 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-30 04:28:30,797 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_92-evilcollapse_racing.i[47038,47051] [2023-08-30 04:28:30,800 WARN L1562 CHandler]: Possible shadowing of function new [2023-08-30 04:28:30,800 WARN L1562 CHandler]: Possible shadowing of function new [2023-08-30 04:28:30,800 WARN L1562 CHandler]: Possible shadowing of function new [2023-08-30 04:28:30,801 WARN L1562 CHandler]: Possible shadowing of function new [2023-08-30 04:28:30,809 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 04:28:30,819 INFO L203 MainTranslator]: Completed pre-run [2023-08-30 04:28:30,851 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_92-evilcollapse_racing.i[47038,47051] [2023-08-30 04:28:30,864 WARN L1562 CHandler]: Possible shadowing of function new [2023-08-30 04:28:30,865 WARN L1562 CHandler]: Possible shadowing of function new [2023-08-30 04:28:30,865 WARN L1562 CHandler]: Possible shadowing of function new [2023-08-30 04:28:30,865 WARN L1562 CHandler]: Possible shadowing of function new [2023-08-30 04:28:30,886 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 04:28:30,971 INFO L208 MainTranslator]: Completed translation [2023-08-30 04:28:30,971 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 04:28:30 WrapperNode [2023-08-30 04:28:30,973 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-30 04:28:30,974 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-30 04:28:30,974 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-30 04:28:30,974 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-30 04:28:30,980 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 04:28:30" (1/1) ... [2023-08-30 04:28:31,012 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 04:28:30" (1/1) ... [2023-08-30 04:28:31,056 INFO L138 Inliner]: procedures = 282, calls = 51, calls flagged for inlining = 11, calls inlined = 12, statements flattened = 222 [2023-08-30 04:28:31,057 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-30 04:28:31,058 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-30 04:28:31,058 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-30 04:28:31,058 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-08-30 04:28:31,065 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 04:28:30" (1/1) ... [2023-08-30 04:28:31,066 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 04:28:30" (1/1) ... [2023-08-30 04:28:31,079 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 04:28:30" (1/1) ... [2023-08-30 04:28:31,080 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 04:28:30" (1/1) ... [2023-08-30 04:28:31,093 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 04:28:30" (1/1) ... [2023-08-30 04:28:31,110 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 04:28:30" (1/1) ... [2023-08-30 04:28:31,115 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 04:28:30" (1/1) ... [2023-08-30 04:28:31,123 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 04:28:30" (1/1) ... [2023-08-30 04:28:31,127 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-30 04:28:31,129 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-30 04:28:31,130 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-08-30 04:28:31,130 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-08-30 04:28:31,131 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 04:28:30" (1/1) ... [2023-08-30 04:28:31,136 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 04:28:31,145 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 04:28:31,158 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) [2023-08-30 04:28:31,177 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 [2023-08-30 04:28:31,203 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2023-08-30 04:28:31,203 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-30 04:28:31,204 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-08-30 04:28:31,204 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-30 04:28:31,204 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2023-08-30 04:28:31,204 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2023-08-30 04:28:31,204 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4 [2023-08-30 04:28:31,205 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-08-30 04:28:31,205 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-08-30 04:28:31,205 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-30 04:28:31,206 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-08-30 04:28:31,206 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2023-08-30 04:28:31,207 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2023-08-30 04:28:31,207 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-30 04:28:31,207 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-30 04:28:31,209 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-30 04:28:31,435 INFO L236 CfgBuilder]: Building ICFG [2023-08-30 04:28:31,444 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-30 04:28:32,102 INFO L277 CfgBuilder]: Performing block encoding [2023-08-30 04:28:32,109 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-30 04:28:32,109 INFO L302 CfgBuilder]: Removed 16 assume(true) statements. [2023-08-30 04:28:32,111 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 04:28:32 BoogieIcfgContainer [2023-08-30 04:28:32,111 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-30 04:28:32,113 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-30 04:28:32,114 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-08-30 04:28:32,116 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-08-30 04:28:32,116 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.08 04:28:30" (1/3) ... [2023-08-30 04:28:32,117 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@23d9ade and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 04:28:32, skipping insertion in model container [2023-08-30 04:28:32,117 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 04:28:30" (2/3) ... [2023-08-30 04:28:32,117 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@23d9ade and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 04:28:32, skipping insertion in model container [2023-08-30 04:28:32,117 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 04:28:32" (3/3) ... [2023-08-30 04:28:32,118 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_92-evilcollapse_racing.i [2023-08-30 04:28:32,132 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-30 04:28:32,133 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 48 error locations. [2023-08-30 04:28:32,133 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-30 04:28:32,262 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2023-08-30 04:28:32,291 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 257 places, 280 transitions, 568 flow [2023-08-30 04:28:32,396 INFO L130 PetriNetUnfolder]: 28/303 cut-off events. [2023-08-30 04:28:32,396 INFO L131 PetriNetUnfolder]: For 1/2 co-relation queries the response was YES. [2023-08-30 04:28:32,403 INFO L83 FinitePrefix]: Finished finitePrefix Result has 309 conditions, 303 events. 28/303 cut-off events. For 1/2 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 703 event pairs, 0 based on Foata normal form. 0/219 useless extension candidates. Maximal degree in co-relation 169. Up to 4 conditions per place. [2023-08-30 04:28:32,403 INFO L82 GeneralOperation]: Start removeDead. Operand has 257 places, 280 transitions, 568 flow [2023-08-30 04:28:32,409 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 257 places, 280 transitions, 568 flow [2023-08-30 04:28:32,412 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-30 04:28:32,419 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 257 places, 280 transitions, 568 flow [2023-08-30 04:28:32,421 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 257 places, 280 transitions, 568 flow [2023-08-30 04:28:32,422 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 257 places, 280 transitions, 568 flow [2023-08-30 04:28:32,478 INFO L130 PetriNetUnfolder]: 28/303 cut-off events. [2023-08-30 04:28:32,479 INFO L131 PetriNetUnfolder]: For 1/2 co-relation queries the response was YES. [2023-08-30 04:28:32,480 INFO L83 FinitePrefix]: Finished finitePrefix Result has 309 conditions, 303 events. 28/303 cut-off events. For 1/2 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 703 event pairs, 0 based on Foata normal form. 0/219 useless extension candidates. Maximal degree in co-relation 169. Up to 4 conditions per place. [2023-08-30 04:28:32,483 INFO L119 LiptonReduction]: Number of co-enabled transitions 5742 [2023-08-30 04:30:09,176 WARN L222 SmtUtils]: Spent 5.38s on a formula simplification that was a NOOP. DAG size: 148 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-08-30 04:30:18,162 WARN L222 SmtUtils]: Spent 8.98s on a formula simplification that was a NOOP. DAG size: 144 (called from [L 301] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-08-30 04:30:25,420 WARN L222 SmtUtils]: Spent 7.26s on a formula simplification that was a NOOP. DAG size: 148 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-08-30 04:30:31,608 WARN L222 SmtUtils]: Spent 6.19s on a formula simplification that was a NOOP. DAG size: 144 (called from [L 301] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-08-30 04:30:41,003 WARN L222 SmtUtils]: Spent 8.57s on a formula simplification. DAG size of input: 156 DAG size of output: 148 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-08-30 04:30:50,766 WARN L222 SmtUtils]: Spent 6.18s on a formula simplification. DAG size of input: 156 DAG size of output: 148 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-08-30 04:31:01,871 WARN L222 SmtUtils]: Spent 8.10s on a formula simplification. DAG size of input: 159 DAG size of output: 151 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-08-30 04:31:14,081 WARN L222 SmtUtils]: Spent 8.19s on a formula simplification. DAG size of input: 159 DAG size of output: 151 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-08-30 04:31:40,750 WARN L222 SmtUtils]: Spent 19.22s on a formula simplification that was a NOOP. DAG size: 166 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-08-30 04:32:01,787 WARN L222 SmtUtils]: Spent 21.04s on a formula simplification that was a NOOP. DAG size: 162 (called from [L 301] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-08-30 04:32:22,248 WARN L222 SmtUtils]: Spent 20.46s on a formula simplification that was a NOOP. DAG size: 166 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-08-30 04:32:44,930 WARN L222 SmtUtils]: Spent 22.68s on a formula simplification that was a NOOP. DAG size: 162 (called from [L 301] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-08-30 04:32:57,351 WARN L222 SmtUtils]: Spent 11.33s on a formula simplification. DAG size of input: 175 DAG size of output: 167 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-08-30 04:33:02,354 WARN L222 SmtUtils]: Spent 5.00s on a formula simplification that was a NOOP. DAG size: 165 (called from [L 301] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-08-30 04:33:13,562 WARN L222 SmtUtils]: Spent 11.21s on a formula simplification. DAG size of input: 175 DAG size of output: 167 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-08-30 04:33:18,724 WARN L222 SmtUtils]: Spent 5.16s on a formula simplification that was a NOOP. DAG size: 165 (called from [L 301] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-08-30 04:33:27,894 WARN L222 SmtUtils]: Spent 8.71s on a formula simplification. DAG size of input: 171 DAG size of output: 163 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-08-30 04:33:39,921 WARN L222 SmtUtils]: Spent 8.39s on a formula simplification. DAG size of input: 171 DAG size of output: 163 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-08-30 04:36:00,671 WARN L222 SmtUtils]: Spent 2.23m on a formula simplification. DAG size of input: 230 DAG size of output: 214 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-08-30 04:37:13,286 WARN L222 SmtUtils]: Spent 1.21m on a formula simplification that was a NOOP. DAG size: 212 (called from [L 301] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-08-30 04:39:47,420 WARN L222 SmtUtils]: Spent 2.57m on a formula simplification. DAG size of input: 230 DAG size of output: 214 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-08-30 04:41:08,642 WARN L222 SmtUtils]: Spent 1.35m on a formula simplification that was a NOOP. DAG size: 212 (called from [L 301] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-08-30 04:41:15,031 INFO L134 LiptonReduction]: Checked pairs total: 7113 [2023-08-30 04:41:15,031 INFO L136 LiptonReduction]: Total number of compositions: 342 [2023-08-30 04:41:15,044 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-30 04:41:15,048 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;@38455b85, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-30 04:41:15,048 INFO L358 AbstractCegarLoop]: Starting to check reachability of 64 error locations. [2023-08-30 04:41:15,051 INFO L130 PetriNetUnfolder]: 0/1 cut-off events. [2023-08-30 04:41:15,051 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 04:41:15,051 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 04:41:15,051 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-08-30 04:41:15,052 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 61 more)] === [2023-08-30 04:41:15,056 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 04:41:15,056 INFO L85 PathProgramCache]: Analyzing trace with hash 36396, now seen corresponding path program 1 times [2023-08-30 04:41:15,066 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-30 04:41:15,066 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [52598648] [2023-08-30 04:41:15,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 04:41:15,067 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 [2023-08-30 04:41:15,067 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-30 04:41:15,077 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) [2023-08-30 04:41:15,128 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 [2023-08-30 04:41:15,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 04:41:15,191 INFO L263 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 9 conjunts are in the unsatisfiable core [2023-08-30 04:41:15,194 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 04:41:15,243 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 04:41:15,243 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 04:41:15,244 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-30 04:41:15,244 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [52598648] [2023-08-30 04:41:15,244 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [52598648] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 04:41:15,245 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 04:41:15,245 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 04:41:15,246 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1952690086] [2023-08-30 04:41:15,247 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 04:41:15,252 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 04:41:15,257 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-30 04:41:15,273 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 04:41:15,273 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 04:41:15,699 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 252 out of 622 [2023-08-30 04:41:15,703 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 87 transitions, 182 flow. Second operand has 3 states, 3 states have (on average 252.66666666666666) internal successors, (758), 3 states have internal predecessors, (758), 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) [2023-08-30 04:41:15,703 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 04:41:15,703 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 252 of 622 [2023-08-30 04:41:15,704 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 04:41:16,941 INFO L130 PetriNetUnfolder]: 239/569 cut-off events. [2023-08-30 04:41:16,941 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-08-30 04:41:16,942 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1067 conditions, 569 events. 239/569 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 3010 event pairs, 200 based on Foata normal form. 33/284 useless extension candidates. Maximal degree in co-relation 981. Up to 487 conditions per place. [2023-08-30 04:41:16,945 INFO L137 encePairwiseOnDemand]: 581/622 looper letters, 56 selfloop transitions, 5 changer transitions 0/69 dead transitions. [2023-08-30 04:41:16,945 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 69 transitions, 268 flow [2023-08-30 04:41:16,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 04:41:16,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 04:41:16,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 867 transitions. [2023-08-30 04:41:16,964 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4646302250803859 [2023-08-30 04:41:16,964 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 867 transitions. [2023-08-30 04:41:16,965 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 867 transitions. [2023-08-30 04:41:16,967 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 04:41:16,969 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 867 transitions. [2023-08-30 04:41:16,975 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 289.0) internal successors, (867), 3 states have internal predecessors, (867), 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) [2023-08-30 04:41:16,981 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 622.0) internal successors, (2488), 4 states have internal predecessors, (2488), 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) [2023-08-30 04:41:16,983 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 622.0) internal successors, (2488), 4 states have internal predecessors, (2488), 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) [2023-08-30 04:41:16,984 INFO L175 Difference]: Start difference. First operand has 75 places, 87 transitions, 182 flow. Second operand 3 states and 867 transitions. [2023-08-30 04:41:16,985 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 69 transitions, 268 flow [2023-08-30 04:41:16,987 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 69 transitions, 268 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-30 04:41:16,989 INFO L231 Difference]: Finished difference. Result has 62 places, 66 transitions, 185 flow [2023-08-30 04:41:16,991 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=622, PETRI_DIFFERENCE_MINUEND_FLOW=132, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=185, PETRI_PLACES=62, PETRI_TRANSITIONS=66} [2023-08-30 04:41:16,993 INFO L281 CegarLoopForPetriNet]: 75 programPoint places, -13 predicate places. [2023-08-30 04:41:16,994 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 66 transitions, 185 flow [2023-08-30 04:41:16,994 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 252.66666666666666) internal successors, (758), 3 states have internal predecessors, (758), 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) [2023-08-30 04:41:16,994 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 04:41:16,994 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-08-30 04:41:17,006 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 (2)] Ended with exit code 0 [2023-08-30 04:41:17,203 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 [2023-08-30 04:41:17,204 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 61 more)] === [2023-08-30 04:41:17,204 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 04:41:17,205 INFO L85 PathProgramCache]: Analyzing trace with hash 36397, now seen corresponding path program 1 times [2023-08-30 04:41:17,205 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-30 04:41:17,205 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [377879239] [2023-08-30 04:41:17,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 04:41:17,206 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 [2023-08-30 04:41:17,206 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-30 04:41:17,208 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) [2023-08-30 04:41:17,213 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 [2023-08-30 04:41:17,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 04:41:17,269 INFO L263 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 5 conjunts are in the unsatisfiable core [2023-08-30 04:41:17,270 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 04:41:17,286 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 04:41:17,286 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 04:41:17,286 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-30 04:41:17,288 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [377879239] [2023-08-30 04:41:17,289 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [377879239] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 04:41:17,289 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 04:41:17,289 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 04:41:17,289 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1262484158] [2023-08-30 04:41:17,289 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 04:41:17,290 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 04:41:17,291 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-30 04:41:17,291 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 04:41:17,291 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 04:41:17,592 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 253 out of 622 [2023-08-30 04:41:17,593 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 66 transitions, 185 flow. Second operand has 3 states, 3 states have (on average 253.66666666666666) internal successors, (761), 3 states have internal predecessors, (761), 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) [2023-08-30 04:41:17,593 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 04:41:17,593 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 253 of 622 [2023-08-30 04:41:17,593 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 04:41:18,719 INFO L130 PetriNetUnfolder]: 227/531 cut-off events. [2023-08-30 04:41:18,719 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-08-30 04:41:18,720 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1030 conditions, 531 events. 227/531 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 57. Compared 2849 event pairs, 152 based on Foata normal form. 2/236 useless extension candidates. Maximal degree in co-relation 989. Up to 380 conditions per place. [2023-08-30 04:41:18,722 INFO L137 encePairwiseOnDemand]: 615/622 looper letters, 73 selfloop transitions, 3 changer transitions 0/84 dead transitions. [2023-08-30 04:41:18,722 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 84 transitions, 371 flow [2023-08-30 04:41:18,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 04:41:18,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 04:41:18,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 835 transitions. [2023-08-30 04:41:18,728 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.447481243301179 [2023-08-30 04:41:18,728 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 835 transitions. [2023-08-30 04:41:18,728 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 835 transitions. [2023-08-30 04:41:18,729 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 04:41:18,729 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 835 transitions. [2023-08-30 04:41:18,731 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 278.3333333333333) internal successors, (835), 3 states have internal predecessors, (835), 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) [2023-08-30 04:41:18,736 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 622.0) internal successors, (2488), 4 states have internal predecessors, (2488), 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) [2023-08-30 04:41:18,737 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 622.0) internal successors, (2488), 4 states have internal predecessors, (2488), 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) [2023-08-30 04:41:18,737 INFO L175 Difference]: Start difference. First operand has 62 places, 66 transitions, 185 flow. Second operand 3 states and 835 transitions. [2023-08-30 04:41:18,737 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 84 transitions, 371 flow [2023-08-30 04:41:18,738 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 84 transitions, 366 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 04:41:18,739 INFO L231 Difference]: Finished difference. Result has 61 places, 63 transitions, 183 flow [2023-08-30 04:41:18,740 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=622, PETRI_DIFFERENCE_MINUEND_FLOW=172, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=183, PETRI_PLACES=61, PETRI_TRANSITIONS=63} [2023-08-30 04:41:18,740 INFO L281 CegarLoopForPetriNet]: 75 programPoint places, -14 predicate places. [2023-08-30 04:41:18,741 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 63 transitions, 183 flow [2023-08-30 04:41:18,741 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 253.66666666666666) internal successors, (761), 3 states have internal predecessors, (761), 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) [2023-08-30 04:41:18,741 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 04:41:18,741 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-08-30 04:41:18,755 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 [2023-08-30 04:41:18,950 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 [2023-08-30 04:41:18,950 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 61 more)] === [2023-08-30 04:41:18,951 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 04:41:18,951 INFO L85 PathProgramCache]: Analyzing trace with hash 1129654, now seen corresponding path program 1 times [2023-08-30 04:41:18,951 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-30 04:41:18,951 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [929184177] [2023-08-30 04:41:18,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 04:41:18,951 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 [2023-08-30 04:41:18,952 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-30 04:41:18,956 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) [2023-08-30 04:41:18,957 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 [2023-08-30 04:41:19,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 04:41:19,118 INFO L263 TraceCheckSpWp]: Trace formula consists of 145 conjuncts, 30 conjunts are in the unsatisfiable core [2023-08-30 04:41:19,121 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 04:41:19,224 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 15 [2023-08-30 04:41:19,242 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 15 [2023-08-30 04:41:19,273 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 04:41:19,273 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 04:41:19,273 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-30 04:41:19,274 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [929184177] [2023-08-30 04:41:19,274 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [929184177] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 04:41:19,274 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 04:41:19,274 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 04:41:19,274 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1886074770] [2023-08-30 04:41:19,275 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 04:41:19,275 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 04:41:19,275 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-30 04:41:19,276 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 04:41:19,276 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-08-30 04:41:19,958 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 238 out of 622 [2023-08-30 04:41:19,960 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 63 transitions, 183 flow. Second operand has 4 states, 4 states have (on average 238.75) internal successors, (955), 4 states have internal predecessors, (955), 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) [2023-08-30 04:41:19,960 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 04:41:19,960 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 238 of 622 [2023-08-30 04:41:19,960 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 04:41:22,222 INFO L130 PetriNetUnfolder]: 228/547 cut-off events. [2023-08-30 04:41:22,225 INFO L131 PetriNetUnfolder]: For 19/19 co-relation queries the response was YES. [2023-08-30 04:41:22,225 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1134 conditions, 547 events. 228/547 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 2894 event pairs, 190 based on Foata normal form. 0/273 useless extension candidates. Maximal degree in co-relation 1060. Up to 463 conditions per place. [2023-08-30 04:41:22,228 INFO L137 encePairwiseOnDemand]: 615/622 looper letters, 53 selfloop transitions, 5 changer transitions 0/66 dead transitions. [2023-08-30 04:41:22,228 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 66 transitions, 309 flow [2023-08-30 04:41:22,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-30 04:41:22,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-30 04:41:22,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1013 transitions. [2023-08-30 04:41:22,233 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4071543408360129 [2023-08-30 04:41:22,234 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1013 transitions. [2023-08-30 04:41:22,234 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1013 transitions. [2023-08-30 04:41:22,234 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 04:41:22,235 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1013 transitions. [2023-08-30 04:41:22,237 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 253.25) internal successors, (1013), 4 states have internal predecessors, (1013), 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) [2023-08-30 04:41:22,241 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 622.0) internal successors, (3110), 5 states have internal predecessors, (3110), 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) [2023-08-30 04:41:22,242 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 622.0) internal successors, (3110), 5 states have internal predecessors, (3110), 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) [2023-08-30 04:41:22,243 INFO L175 Difference]: Start difference. First operand has 61 places, 63 transitions, 183 flow. Second operand 4 states and 1013 transitions. [2023-08-30 04:41:22,243 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 66 transitions, 309 flow [2023-08-30 04:41:22,245 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 66 transitions, 303 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 04:41:22,247 INFO L231 Difference]: Finished difference. Result has 63 places, 63 transitions, 195 flow [2023-08-30 04:41:22,247 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=622, PETRI_DIFFERENCE_MINUEND_FLOW=169, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=195, PETRI_PLACES=63, PETRI_TRANSITIONS=63} [2023-08-30 04:41:22,249 INFO L281 CegarLoopForPetriNet]: 75 programPoint places, -12 predicate places. [2023-08-30 04:41:22,249 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 63 transitions, 195 flow [2023-08-30 04:41:22,250 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 238.75) internal successors, (955), 4 states have internal predecessors, (955), 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) [2023-08-30 04:41:22,250 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 04:41:22,250 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-08-30 04:41:22,265 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 [2023-08-30 04:41:22,460 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 [2023-08-30 04:41:22,461 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 61 more)] === [2023-08-30 04:41:22,461 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 04:41:22,461 INFO L85 PathProgramCache]: Analyzing trace with hash 35020745, now seen corresponding path program 1 times [2023-08-30 04:41:22,462 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-30 04:41:22,462 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [916619077] [2023-08-30 04:41:22,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 04:41:22,462 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 [2023-08-30 04:41:22,462 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-30 04:41:22,463 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) [2023-08-30 04:41:22,465 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 [2023-08-30 04:41:22,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 04:41:22,815 INFO L263 TraceCheckSpWp]: Trace formula consists of 307 conjuncts, 45 conjunts are in the unsatisfiable core [2023-08-30 04:41:22,819 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 04:41:25,104 INFO L321 Elim1Store]: treesize reduction 324, result has 30.9 percent of original size [2023-08-30 04:41:25,105 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 4 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 5 new quantified variables, introduced 12 case distinctions, treesize of input 894 treesize of output 841 [2023-08-30 04:41:29,646 INFO L321 Elim1Store]: treesize reduction 324, result has 30.9 percent of original size [2023-08-30 04:41:29,646 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 4 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 5 new quantified variables, introduced 12 case distinctions, treesize of input 442 treesize of output 633 [2023-08-30 04:41:29,971 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 [2023-08-30 04:41:30,313 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 [2023-08-30 04:41:30,582 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 5 [2023-08-30 04:41:30,978 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 [2023-08-30 04:41:31,170 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 12 treesize of output 11 [2023-08-30 04:41:31,330 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 [2023-08-30 04:41:31,471 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 [2023-08-30 04:41:31,620 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 [2023-08-30 04:41:31,799 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 12 treesize of output 11 [2023-08-30 04:41:31,917 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 12 treesize of output 11 [2023-08-30 04:41:42,510 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 04:41:42,615 INFO L321 Elim1Store]: treesize reduction 48, result has 14.3 percent of original size [2023-08-30 04:41:42,616 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 1158 treesize of output 1091 [2023-08-30 04:41:42,696 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 229 treesize of output 227 [2023-08-30 04:41:42,728 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 227 treesize of output 225 [2023-08-30 04:41:42,987 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 04:41:42,991 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 04:41:43,147 INFO L217 Elim1Store]: Index analysis took 119 ms [2023-08-30 04:41:43,654 INFO L321 Elim1Store]: treesize reduction 271, result has 21.0 percent of original size [2023-08-30 04:41:43,654 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 11 case distinctions, treesize of input 2375 treesize of output 2353 [2023-08-30 04:41:47,408 INFO L321 Elim1Store]: treesize reduction 89, result has 24.6 percent of original size [2023-08-30 04:41:47,408 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 8 case distinctions, treesize of input 221 treesize of output 117 [2023-08-30 04:41:52,005 INFO L321 Elim1Store]: treesize reduction 25, result has 24.2 percent of original size [2023-08-30 04:41:52,005 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 5 case distinctions, treesize of input 108 treesize of output 104 [2023-08-30 04:41:52,023 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 25 [2023-08-30 04:41:52,165 INFO L173 IndexEqualityManager]: detected equality via solver [2023-08-30 04:41:52,169 INFO L173 IndexEqualityManager]: detected equality via solver [2023-08-30 04:41:52,203 INFO L321 Elim1Store]: treesize reduction 72, result has 1.4 percent of original size [2023-08-30 04:41:52,203 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 3 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 7 case distinctions, treesize of input 226 treesize of output 342 [2023-08-30 04:41:52,217 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 7 [2023-08-30 04:41:52,322 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 04:41:52,444 INFO L321 Elim1Store]: treesize reduction 48, result has 26.2 percent of original size [2023-08-30 04:41:52,445 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 10 case distinctions, treesize of input 546 treesize of output 523 [2023-08-30 04:41:52,540 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 400 treesize of output 398 [2023-08-30 04:41:53,065 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 04:41:53,068 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 04:41:53,070 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 04:41:53,188 INFO L321 Elim1Store]: treesize reduction 143, result has 5.3 percent of original size [2023-08-30 04:41:53,188 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 11 case distinctions, treesize of input 718 treesize of output 673 [2023-08-30 04:41:53,241 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 7 [2023-08-30 04:41:53,262 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 430 treesize of output 428 [2023-08-30 04:41:53,283 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 428 treesize of output 426 [2023-08-30 04:41:54,087 INFO L321 Elim1Store]: treesize reduction 67, result has 23.9 percent of original size [2023-08-30 04:41:54,088 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 7 case distinctions, treesize of input 395 treesize of output 335 [2023-08-30 04:41:54,563 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 7 [2023-08-30 04:41:54,583 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 7 [2023-08-30 04:41:54,714 INFO L321 Elim1Store]: treesize reduction 33, result has 19.5 percent of original size [2023-08-30 04:41:54,714 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 90 treesize of output 51 [2023-08-30 04:41:54,830 INFO L321 Elim1Store]: treesize reduction 32, result has 3.0 percent of original size [2023-08-30 04:41:54,830 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 554 treesize of output 439 [2023-08-30 04:41:54,902 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 7 [2023-08-30 04:41:56,667 INFO L321 Elim1Store]: treesize reduction 234, result has 24.3 percent of original size [2023-08-30 04:41:56,668 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 7 new quantified variables, introduced 16 case distinctions, treesize of input 922 treesize of output 875 [2023-08-30 04:41:57,563 INFO L321 Elim1Store]: treesize reduction 103, result has 1.0 percent of original size [2023-08-30 04:41:57,564 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 10 case distinctions, treesize of input 193 treesize of output 23 [2023-08-30 04:41:57,679 INFO L321 Elim1Store]: treesize reduction 129, result has 0.8 percent of original size [2023-08-30 04:41:57,680 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 11 case distinctions, treesize of input 193 treesize of output 23 [2023-08-30 04:41:57,796 INFO L321 Elim1Store]: treesize reduction 52, result has 1.9 percent of original size [2023-08-30 04:41:57,796 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 166 treesize of output 18 [2023-08-30 04:41:58,326 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 454 treesize of output 374 [2023-08-30 04:41:58,883 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 844 treesize of output 718 [2023-08-30 04:42:06,784 WARN L222 SmtUtils]: Spent 6.69s on a formula simplification. DAG size of input: 609 DAG size of output: 607 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-08-30 04:42:06,788 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 04:42:06,788 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 04:42:06,788 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-30 04:42:06,789 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [916619077] [2023-08-30 04:42:06,789 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [916619077] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 04:42:06,789 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 04:42:06,789 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 04:42:06,789 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [622518424] [2023-08-30 04:42:06,789 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 04:42:06,789 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 04:42:06,789 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-30 04:42:06,790 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 04:42:06,791 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-08-30 04:42:10,744 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-08-30 04:42:14,412 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 199 out of 622 [2023-08-30 04:42:14,413 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 63 transitions, 195 flow. Second operand has 4 states, 4 states have (on average 200.0) internal successors, (800), 4 states have internal predecessors, (800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 04:42:14,413 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 04:42:14,413 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 199 of 622 [2023-08-30 04:42:14,413 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 04:42:18,881 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-08-30 04:42:19,616 INFO L130 PetriNetUnfolder]: 248/565 cut-off events. [2023-08-30 04:42:19,616 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-08-30 04:42:19,617 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1162 conditions, 565 events. 248/565 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 2914 event pairs, 210 based on Foata normal form. 0/239 useless extension candidates. Maximal degree in co-relation 1131. Up to 505 conditions per place. [2023-08-30 04:42:19,619 INFO L137 encePairwiseOnDemand]: 617/622 looper letters, 54 selfloop transitions, 4 changer transitions 0/64 dead transitions. [2023-08-30 04:42:19,619 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 64 transitions, 315 flow [2023-08-30 04:42:19,622 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-30 04:42:19,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-30 04:42:19,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 856 transitions. [2023-08-30 04:42:19,625 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3440514469453376 [2023-08-30 04:42:19,625 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 856 transitions. [2023-08-30 04:42:19,625 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 856 transitions. [2023-08-30 04:42:19,626 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 04:42:19,626 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 856 transitions. [2023-08-30 04:42:19,628 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 214.0) internal successors, (856), 4 states have internal predecessors, (856), 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) [2023-08-30 04:42:19,631 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 622.0) internal successors, (3110), 5 states have internal predecessors, (3110), 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) [2023-08-30 04:42:19,633 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 622.0) internal successors, (3110), 5 states have internal predecessors, (3110), 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) [2023-08-30 04:42:19,633 INFO L175 Difference]: Start difference. First operand has 63 places, 63 transitions, 195 flow. Second operand 4 states and 856 transitions. [2023-08-30 04:42:19,633 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 64 transitions, 315 flow [2023-08-30 04:42:19,634 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 64 transitions, 307 flow, removed 1 selfloop flow, removed 2 redundant places. [2023-08-30 04:42:19,636 INFO L231 Difference]: Finished difference. Result has 65 places, 63 transitions, 201 flow [2023-08-30 04:42:19,636 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=622, PETRI_DIFFERENCE_MINUEND_FLOW=187, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=201, PETRI_PLACES=65, PETRI_TRANSITIONS=63} [2023-08-30 04:42:19,637 INFO L281 CegarLoopForPetriNet]: 75 programPoint places, -10 predicate places. [2023-08-30 04:42:19,637 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 63 transitions, 201 flow [2023-08-30 04:42:19,638 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 200.0) internal successors, (800), 4 states have internal predecessors, (800), 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) [2023-08-30 04:42:19,638 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 04:42:19,638 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-08-30 04:42:19,657 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 [2023-08-30 04:42:19,851 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 [2023-08-30 04:42:19,851 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr27REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 61 more)] === [2023-08-30 04:42:19,852 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 04:42:19,852 INFO L85 PathProgramCache]: Analyzing trace with hash 35016480, now seen corresponding path program 1 times [2023-08-30 04:42:19,852 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-30 04:42:19,852 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1457589047] [2023-08-30 04:42:19,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 04:42:19,852 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 [2023-08-30 04:42:19,852 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-30 04:42:19,853 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) [2023-08-30 04:42:19,855 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 [2023-08-30 04:42:19,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 04:42:19,932 INFO L263 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 2 conjunts are in the unsatisfiable core [2023-08-30 04:42:19,933 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 04:42:19,940 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 04:42:19,940 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 04:42:19,940 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-30 04:42:19,940 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1457589047] [2023-08-30 04:42:19,941 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1457589047] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 04:42:19,941 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 04:42:19,941 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 04:42:19,941 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [913416104] [2023-08-30 04:42:19,941 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 04:42:19,941 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 04:42:19,942 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-30 04:42:19,942 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 04:42:19,942 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 04:42:19,971 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 253 out of 622 [2023-08-30 04:42:19,972 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 63 transitions, 201 flow. Second operand has 3 states, 3 states have (on average 254.33333333333334) internal successors, (763), 3 states have internal predecessors, (763), 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) [2023-08-30 04:42:19,972 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 04:42:19,972 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 253 of 622 [2023-08-30 04:42:19,972 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 04:42:20,942 INFO L130 PetriNetUnfolder]: 227/548 cut-off events. [2023-08-30 04:42:20,943 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-08-30 04:42:20,943 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1111 conditions, 548 events. 227/548 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 2919 event pairs, 190 based on Foata normal form. 1/259 useless extension candidates. Maximal degree in co-relation 1082. Up to 465 conditions per place. [2023-08-30 04:42:20,945 INFO L137 encePairwiseOnDemand]: 619/622 looper letters, 54 selfloop transitions, 4 changer transitions 0/66 dead transitions. [2023-08-30 04:42:20,945 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 66 transitions, 333 flow [2023-08-30 04:42:20,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 04:42:20,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 04:42:20,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 815 transitions. [2023-08-30 04:42:20,950 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4367631296891747 [2023-08-30 04:42:20,950 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 815 transitions. [2023-08-30 04:42:20,950 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 815 transitions. [2023-08-30 04:42:20,951 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 04:42:20,951 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 815 transitions. [2023-08-30 04:42:20,952 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 271.6666666666667) internal successors, (815), 3 states have internal predecessors, (815), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 04:42:20,955 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 622.0) internal successors, (2488), 4 states have internal predecessors, (2488), 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) [2023-08-30 04:42:20,956 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 622.0) internal successors, (2488), 4 states have internal predecessors, (2488), 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) [2023-08-30 04:42:20,957 INFO L175 Difference]: Start difference. First operand has 65 places, 63 transitions, 201 flow. Second operand 3 states and 815 transitions. [2023-08-30 04:42:20,957 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 66 transitions, 333 flow [2023-08-30 04:42:20,958 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 66 transitions, 329 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 04:42:20,959 INFO L231 Difference]: Finished difference. Result has 66 places, 63 transitions, 211 flow [2023-08-30 04:42:20,959 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=622, PETRI_DIFFERENCE_MINUEND_FLOW=191, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=211, PETRI_PLACES=66, PETRI_TRANSITIONS=63} [2023-08-30 04:42:20,960 INFO L281 CegarLoopForPetriNet]: 75 programPoint places, -9 predicate places. [2023-08-30 04:42:20,960 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 63 transitions, 211 flow [2023-08-30 04:42:20,961 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 254.33333333333334) internal successors, (763), 3 states have internal predecessors, (763), 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) [2023-08-30 04:42:20,961 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 04:42:20,961 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-30 04:42:20,972 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 (6)] Ended with exit code 0 [2023-08-30 04:42:21,170 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 [2023-08-30 04:42:21,171 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr27REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 61 more)] === [2023-08-30 04:42:21,171 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 04:42:21,171 INFO L85 PathProgramCache]: Analyzing trace with hash 1085640301, now seen corresponding path program 1 times [2023-08-30 04:42:21,172 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-30 04:42:21,172 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [376220478] [2023-08-30 04:42:21,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 04:42:21,172 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 [2023-08-30 04:42:21,172 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-30 04:42:21,173 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) [2023-08-30 04:42:21,173 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 [2023-08-30 04:42:21,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 04:42:21,339 INFO L263 TraceCheckSpWp]: Trace formula consists of 266 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-30 04:42:21,340 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 04:42:21,353 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 04:42:21,353 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 04:42:21,372 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 04:42:21,372 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-30 04:42:21,372 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [376220478] [2023-08-30 04:42:21,372 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [376220478] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 04:42:21,372 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-08-30 04:42:21,373 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2023-08-30 04:42:21,373 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [26613279] [2023-08-30 04:42:21,373 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-08-30 04:42:21,373 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-30 04:42:21,374 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-30 04:42:21,375 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-30 04:42:21,375 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-08-30 04:42:21,406 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 252 out of 622 [2023-08-30 04:42:21,408 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 63 transitions, 211 flow. Second operand has 6 states, 6 states have (on average 253.33333333333334) internal successors, (1520), 6 states have internal predecessors, (1520), 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) [2023-08-30 04:42:21,408 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 04:42:21,408 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 252 of 622 [2023-08-30 04:42:21,408 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 04:42:27,316 INFO L130 PetriNetUnfolder]: 230/563 cut-off events. [2023-08-30 04:42:27,316 INFO L131 PetriNetUnfolder]: For 7/7 co-relation queries the response was YES. [2023-08-30 04:42:27,317 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1179 conditions, 563 events. 230/563 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 2977 event pairs, 190 based on Foata normal form. 6/277 useless extension candidates. Maximal degree in co-relation 1095. Up to 462 conditions per place. [2023-08-30 04:42:27,319 INFO L137 encePairwiseOnDemand]: 616/622 looper letters, 60 selfloop transitions, 10 changer transitions 0/78 dead transitions. [2023-08-30 04:42:27,319 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 78 transitions, 441 flow [2023-08-30 04:42:27,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-30 04:42:27,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-30 04:42:27,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1582 transitions. [2023-08-30 04:42:27,326 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42390139335476956 [2023-08-30 04:42:27,326 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1582 transitions. [2023-08-30 04:42:27,326 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1582 transitions. [2023-08-30 04:42:27,327 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 04:42:27,327 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1582 transitions. [2023-08-30 04:42:27,331 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 263.6666666666667) internal successors, (1582), 6 states have internal predecessors, (1582), 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) [2023-08-30 04:42:27,335 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 622.0) internal successors, (4354), 7 states have internal predecessors, (4354), 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) [2023-08-30 04:42:27,336 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 622.0) internal successors, (4354), 7 states have internal predecessors, (4354), 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) [2023-08-30 04:42:27,336 INFO L175 Difference]: Start difference. First operand has 66 places, 63 transitions, 211 flow. Second operand 6 states and 1582 transitions. [2023-08-30 04:42:27,336 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 78 transitions, 441 flow [2023-08-30 04:42:27,338 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 78 transitions, 437 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 04:42:27,339 INFO L231 Difference]: Finished difference. Result has 74 places, 69 transitions, 299 flow [2023-08-30 04:42:27,339 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=622, PETRI_DIFFERENCE_MINUEND_FLOW=207, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=299, PETRI_PLACES=74, PETRI_TRANSITIONS=69} [2023-08-30 04:42:27,340 INFO L281 CegarLoopForPetriNet]: 75 programPoint places, -1 predicate places. [2023-08-30 04:42:27,340 INFO L495 AbstractCegarLoop]: Abstraction has has 74 places, 69 transitions, 299 flow [2023-08-30 04:42:27,341 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 253.33333333333334) internal successors, (1520), 6 states have internal predecessors, (1520), 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) [2023-08-30 04:42:27,341 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 04:42:27,341 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1, 1] [2023-08-30 04:42:27,355 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 (7)] Ended with exit code 0 [2023-08-30 04:42:27,553 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /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 [2023-08-30 04:42:27,553 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr27REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 61 more)] === [2023-08-30 04:42:27,553 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 04:42:27,554 INFO L85 PathProgramCache]: Analyzing trace with hash 1334983264, now seen corresponding path program 2 times [2023-08-30 04:42:27,554 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-30 04:42:27,554 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [250353517] [2023-08-30 04:42:27,554 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-30 04:42:27,555 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 [2023-08-30 04:42:27,555 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-30 04:42:27,556 INFO L229 MonitoredProcess]: Starting monitored process 8 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) [2023-08-30 04:42:27,558 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 (8)] Waiting until timeout for monitored process [2023-08-30 04:42:28,139 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-30 04:42:28,139 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 04:42:28,171 INFO L263 TraceCheckSpWp]: Trace formula consists of 752 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-30 04:42:28,172 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 04:42:28,206 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 1 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 04:42:28,206 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 04:42:28,287 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 1 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 04:42:28,287 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-30 04:42:28,287 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [250353517] [2023-08-30 04:42:28,287 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [250353517] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 04:42:28,287 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-08-30 04:42:28,288 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12 [2023-08-30 04:42:28,288 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [704587674] [2023-08-30 04:42:28,288 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-08-30 04:42:28,288 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-08-30 04:42:28,288 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-30 04:42:28,289 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-08-30 04:42:28,289 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2023-08-30 04:42:28,451 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 252 out of 622 [2023-08-30 04:42:28,453 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 69 transitions, 299 flow. Second operand has 12 states, 12 states have (on average 253.16666666666666) internal successors, (3038), 12 states have internal predecessors, (3038), 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) [2023-08-30 04:42:28,453 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 04:42:28,453 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 252 of 622 [2023-08-30 04:42:28,453 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 04:42:31,279 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.00s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-08-30 04:42:32,426 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.15s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-08-30 04:42:34,046 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.62s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-08-30 04:42:35,559 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.51s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-08-30 04:42:36,899 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.34s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-08-30 04:42:44,466 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.28s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-08-30 04:42:46,138 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.09s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] Killed by 15