./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/weaver/chl-node-subst.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 2329fc70 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9b87e7a-3076-4624-a0ab-700eda9bd1a4/bin/uautomizer-uyxdKDjOR8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9b87e7a-3076-4624-a0ab-700eda9bd1a4/bin/uautomizer-uyxdKDjOR8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9b87e7a-3076-4624-a0ab-700eda9bd1a4/bin/uautomizer-uyxdKDjOR8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9b87e7a-3076-4624-a0ab-700eda9bd1a4/bin/uautomizer-uyxdKDjOR8/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/weaver/chl-node-subst.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9b87e7a-3076-4624-a0ab-700eda9bd1a4/bin/uautomizer-uyxdKDjOR8/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9b87e7a-3076-4624-a0ab-700eda9bd1a4/bin/uautomizer-uyxdKDjOR8 --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 97832baecac12bd55b66fbc3c6c38a25db85e9dc70cfa8f34b5e7a9e59086f06 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-2329fc7 [2022-12-13 12:48:18,736 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-13 12:48:18,737 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-13 12:48:18,754 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-13 12:48:18,755 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-13 12:48:18,756 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-13 12:48:18,757 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-13 12:48:18,758 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-13 12:48:18,760 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-13 12:48:18,760 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-13 12:48:18,761 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-13 12:48:18,762 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-13 12:48:18,762 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-13 12:48:18,763 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-13 12:48:18,764 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-13 12:48:18,765 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-13 12:48:18,766 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-13 12:48:18,767 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-13 12:48:18,769 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-13 12:48:18,770 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-13 12:48:18,771 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-13 12:48:18,773 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-13 12:48:18,774 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-13 12:48:18,774 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-13 12:48:18,777 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-13 12:48:18,777 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-13 12:48:18,777 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-13 12:48:18,778 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-13 12:48:18,778 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-13 12:48:18,778 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-13 12:48:18,779 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-13 12:48:18,779 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-13 12:48:18,780 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-13 12:48:18,780 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-13 12:48:18,781 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-13 12:48:18,781 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-13 12:48:18,781 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-13 12:48:18,782 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-13 12:48:18,782 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-13 12:48:18,782 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-13 12:48:18,783 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-13 12:48:18,784 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9b87e7a-3076-4624-a0ab-700eda9bd1a4/bin/uautomizer-uyxdKDjOR8/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2022-12-13 12:48:18,797 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-13 12:48:18,797 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-13 12:48:18,797 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-13 12:48:18,797 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-13 12:48:18,798 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-13 12:48:18,798 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-13 12:48:18,798 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-13 12:48:18,798 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-13 12:48:18,798 INFO L138 SettingsManager]: * Use SBE=true [2022-12-13 12:48:18,799 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-13 12:48:18,799 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-13 12:48:18,799 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-12-13 12:48:18,799 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-13 12:48:18,800 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-13 12:48:18,800 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-13 12:48:18,800 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-12-13 12:48:18,800 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-12-13 12:48:18,800 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-12-13 12:48:18,800 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-13 12:48:18,800 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-12-13 12:48:18,801 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-13 12:48:18,801 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-13 12:48:18,801 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-13 12:48:18,801 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-13 12:48:18,801 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-13 12:48:18,801 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 12:48:18,802 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-13 12:48:18,802 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-13 12:48:18,802 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-13 12:48:18,802 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-13 12:48:18,802 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-13 12:48:18,802 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-12-13 12:48:18,802 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-12-13 12:48:18,802 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2022-12-13 12:48:18,803 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:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9b87e7a-3076-4624-a0ab-700eda9bd1a4/bin/uautomizer-uyxdKDjOR8/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9b87e7a-3076-4624-a0ab-700eda9bd1a4/bin/uautomizer-uyxdKDjOR8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 97832baecac12bd55b66fbc3c6c38a25db85e9dc70cfa8f34b5e7a9e59086f06 [2022-12-13 12:48:18,958 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-13 12:48:18,973 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-13 12:48:18,975 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-13 12:48:18,976 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-13 12:48:18,976 INFO L275 PluginConnector]: CDTParser initialized [2022-12-13 12:48:18,977 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9b87e7a-3076-4624-a0ab-700eda9bd1a4/bin/uautomizer-uyxdKDjOR8/../../sv-benchmarks/c/weaver/chl-node-subst.wvr.c [2022-12-13 12:48:21,617 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-13 12:48:21,765 INFO L351 CDTParser]: Found 1 translation units. [2022-12-13 12:48:21,766 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9b87e7a-3076-4624-a0ab-700eda9bd1a4/sv-benchmarks/c/weaver/chl-node-subst.wvr.c [2022-12-13 12:48:21,773 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9b87e7a-3076-4624-a0ab-700eda9bd1a4/bin/uautomizer-uyxdKDjOR8/data/f0fcc2e04/1ae2ed27fc8f477ab111503879f03482/FLAG1fdc724f0 [2022-12-13 12:48:21,787 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9b87e7a-3076-4624-a0ab-700eda9bd1a4/bin/uautomizer-uyxdKDjOR8/data/f0fcc2e04/1ae2ed27fc8f477ab111503879f03482 [2022-12-13 12:48:21,790 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-13 12:48:21,791 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-13 12:48:21,792 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-13 12:48:21,792 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-13 12:48:21,795 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-13 12:48:21,796 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 12:48:21" (1/1) ... [2022-12-13 12:48:21,796 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@21085c11 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 12:48:21, skipping insertion in model container [2022-12-13 12:48:21,797 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 12:48:21" (1/1) ... [2022-12-13 12:48:21,802 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-13 12:48:21,822 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-13 12:48:21,970 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9b87e7a-3076-4624-a0ab-700eda9bd1a4/sv-benchmarks/c/weaver/chl-node-subst.wvr.c[3996,4009] [2022-12-13 12:48:21,982 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 12:48:21,991 ERROR L326 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) [2022-12-13 12:48:21,991 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@4dc7120f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 12:48:21, skipping insertion in model container [2022-12-13 12:48:21,991 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-13 12:48:21,992 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2022-12-13 12:48:21,993 INFO L158 Benchmark]: Toolchain (without parser) took 201.42ms. Allocated memory is still 130.0MB. Free memory was 95.3MB in the beginning and 84.9MB in the end (delta: 10.4MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-12-13 12:48:21,994 INFO L158 Benchmark]: CDTParser took 0.13ms. Allocated memory is still 104.9MB. Free memory was 55.6MB in the beginning and 55.4MB in the end (delta: 140.1kB). There was no memory consumed. Max. memory is 16.1GB. [2022-12-13 12:48:21,994 INFO L158 Benchmark]: CACSL2BoogieTranslator took 199.60ms. Allocated memory is still 130.0MB. Free memory was 95.3MB in the beginning and 84.9MB in the end (delta: 10.4MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-12-13 12:48:21,995 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13ms. Allocated memory is still 104.9MB. Free memory was 55.6MB in the beginning and 55.4MB in the end (delta: 140.1kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 199.60ms. Allocated memory is still 130.0MB. Free memory was 95.3MB in the beginning and 84.9MB in the end (delta: 10.4MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 118]: 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/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9b87e7a-3076-4624-a0ab-700eda9bd1a4/bin/uautomizer-uyxdKDjOR8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9b87e7a-3076-4624-a0ab-700eda9bd1a4/bin/uautomizer-uyxdKDjOR8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9b87e7a-3076-4624-a0ab-700eda9bd1a4/bin/uautomizer-uyxdKDjOR8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9b87e7a-3076-4624-a0ab-700eda9bd1a4/bin/uautomizer-uyxdKDjOR8/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/weaver/chl-node-subst.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9b87e7a-3076-4624-a0ab-700eda9bd1a4/bin/uautomizer-uyxdKDjOR8/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9b87e7a-3076-4624-a0ab-700eda9bd1a4/bin/uautomizer-uyxdKDjOR8 --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 97832baecac12bd55b66fbc3c6c38a25db85e9dc70cfa8f34b5e7a9e59086f06 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-2329fc7 [2022-12-13 12:48:23,384 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-13 12:48:23,386 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-13 12:48:23,400 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-13 12:48:23,400 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-13 12:48:23,401 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-13 12:48:23,402 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-13 12:48:23,403 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-13 12:48:23,404 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-13 12:48:23,405 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-13 12:48:23,405 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-13 12:48:23,406 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-13 12:48:23,406 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-13 12:48:23,407 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-13 12:48:23,408 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-13 12:48:23,408 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-13 12:48:23,409 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-13 12:48:23,410 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-13 12:48:23,411 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-13 12:48:23,412 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-13 12:48:23,413 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-13 12:48:23,414 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-13 12:48:23,415 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-13 12:48:23,415 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-13 12:48:23,418 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-13 12:48:23,418 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-13 12:48:23,418 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-13 12:48:23,419 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-13 12:48:23,419 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-13 12:48:23,420 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-13 12:48:23,420 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-13 12:48:23,421 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-13 12:48:23,421 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-13 12:48:23,422 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-13 12:48:23,423 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-13 12:48:23,423 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-13 12:48:23,423 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-13 12:48:23,424 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-13 12:48:23,424 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-13 12:48:23,424 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-13 12:48:23,425 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-13 12:48:23,425 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9b87e7a-3076-4624-a0ab-700eda9bd1a4/bin/uautomizer-uyxdKDjOR8/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2022-12-13 12:48:23,442 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-13 12:48:23,442 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-13 12:48:23,442 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-13 12:48:23,442 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-13 12:48:23,443 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-13 12:48:23,443 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-13 12:48:23,443 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-13 12:48:23,443 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-13 12:48:23,443 INFO L138 SettingsManager]: * Use SBE=true [2022-12-13 12:48:23,443 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-13 12:48:23,444 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-13 12:48:23,444 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-12-13 12:48:23,444 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-13 12:48:23,444 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-13 12:48:23,444 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-13 12:48:23,444 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-12-13 12:48:23,444 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-12-13 12:48:23,444 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-12-13 12:48:23,444 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-13 12:48:23,445 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-12-13 12:48:23,445 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-12-13 12:48:23,445 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-12-13 12:48:23,445 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-13 12:48:23,445 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-13 12:48:23,445 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-13 12:48:23,445 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-13 12:48:23,445 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-13 12:48:23,445 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 12:48:23,446 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-13 12:48:23,446 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-13 12:48:23,446 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-12-13 12:48:23,450 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-12-13 12:48:23,450 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-13 12:48:23,450 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-12-13 12:48:23,450 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-12-13 12:48:23,450 INFO L138 SettingsManager]: * Logic for external solver=AUFBV [2022-12-13 12:48:23,451 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2022-12-13 12:48:23,451 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:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9b87e7a-3076-4624-a0ab-700eda9bd1a4/bin/uautomizer-uyxdKDjOR8/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9b87e7a-3076-4624-a0ab-700eda9bd1a4/bin/uautomizer-uyxdKDjOR8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 97832baecac12bd55b66fbc3c6c38a25db85e9dc70cfa8f34b5e7a9e59086f06 [2022-12-13 12:48:23,659 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-13 12:48:23,678 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-13 12:48:23,680 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-13 12:48:23,680 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-13 12:48:23,681 INFO L275 PluginConnector]: CDTParser initialized [2022-12-13 12:48:23,682 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9b87e7a-3076-4624-a0ab-700eda9bd1a4/bin/uautomizer-uyxdKDjOR8/../../sv-benchmarks/c/weaver/chl-node-subst.wvr.c [2022-12-13 12:48:26,374 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-13 12:48:26,526 INFO L351 CDTParser]: Found 1 translation units. [2022-12-13 12:48:26,526 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9b87e7a-3076-4624-a0ab-700eda9bd1a4/sv-benchmarks/c/weaver/chl-node-subst.wvr.c [2022-12-13 12:48:26,532 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9b87e7a-3076-4624-a0ab-700eda9bd1a4/bin/uautomizer-uyxdKDjOR8/data/288d94c46/4a60f82deba040f68ce1bb055ceab6ca/FLAG0211a01d6 [2022-12-13 12:48:26,542 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9b87e7a-3076-4624-a0ab-700eda9bd1a4/bin/uautomizer-uyxdKDjOR8/data/288d94c46/4a60f82deba040f68ce1bb055ceab6ca [2022-12-13 12:48:26,544 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-13 12:48:26,545 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-13 12:48:26,546 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-13 12:48:26,546 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-13 12:48:26,549 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-13 12:48:26,549 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 12:48:26" (1/1) ... [2022-12-13 12:48:26,550 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5de427dd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 12:48:26, skipping insertion in model container [2022-12-13 12:48:26,550 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 12:48:26" (1/1) ... [2022-12-13 12:48:26,555 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-13 12:48:26,573 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-13 12:48:26,726 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9b87e7a-3076-4624-a0ab-700eda9bd1a4/sv-benchmarks/c/weaver/chl-node-subst.wvr.c[3996,4009] [2022-12-13 12:48:26,738 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 12:48:26,748 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2022-12-13 12:48:26,751 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-13 12:48:26,764 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9b87e7a-3076-4624-a0ab-700eda9bd1a4/sv-benchmarks/c/weaver/chl-node-subst.wvr.c[3996,4009] [2022-12-13 12:48:26,769 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 12:48:26,773 INFO L203 MainTranslator]: Completed pre-run [2022-12-13 12:48:26,793 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9b87e7a-3076-4624-a0ab-700eda9bd1a4/sv-benchmarks/c/weaver/chl-node-subst.wvr.c[3996,4009] [2022-12-13 12:48:26,797 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 12:48:26,809 INFO L208 MainTranslator]: Completed translation [2022-12-13 12:48:26,810 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 12:48:26 WrapperNode [2022-12-13 12:48:26,810 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-13 12:48:26,811 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-13 12:48:26,811 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-13 12:48:26,811 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-13 12:48:26,817 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 12:48:26" (1/1) ... [2022-12-13 12:48:26,826 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 12:48:26" (1/1) ... [2022-12-13 12:48:26,851 INFO L138 Inliner]: procedures = 29, calls = 66, calls flagged for inlining = 22, calls inlined = 34, statements flattened = 395 [2022-12-13 12:48:26,851 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-13 12:48:26,852 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-13 12:48:26,852 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-13 12:48:26,852 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-13 12:48:26,859 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 12:48:26" (1/1) ... [2022-12-13 12:48:26,859 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 12:48:26" (1/1) ... [2022-12-13 12:48:26,864 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 12:48:26" (1/1) ... [2022-12-13 12:48:26,864 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 12:48:26" (1/1) ... [2022-12-13 12:48:26,874 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 12:48:26" (1/1) ... [2022-12-13 12:48:26,878 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 12:48:26" (1/1) ... [2022-12-13 12:48:26,880 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 12:48:26" (1/1) ... [2022-12-13 12:48:26,882 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 12:48:26" (1/1) ... [2022-12-13 12:48:26,885 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-13 12:48:26,885 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-13 12:48:26,886 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-13 12:48:26,886 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-13 12:48:26,886 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 12:48:26" (1/1) ... [2022-12-13 12:48:26,891 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 12:48:26,905 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9b87e7a-3076-4624-a0ab-700eda9bd1a4/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 12:48:26,915 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9b87e7a-3076-4624-a0ab-700eda9bd1a4/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-13 12:48:26,917 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9b87e7a-3076-4624-a0ab-700eda9bd1a4/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-13 12:48:26,946 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-13 12:48:26,946 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2022-12-13 12:48:26,946 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-12-13 12:48:26,946 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-13 12:48:26,946 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2022-12-13 12:48:26,946 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-12-13 12:48:26,946 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-12-13 12:48:26,947 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-12-13 12:48:26,947 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-12-13 12:48:26,947 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-12-13 12:48:26,947 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-12-13 12:48:26,947 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-12-13 12:48:26,947 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-13 12:48:26,947 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-13 12:48:26,947 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2022-12-13 12:48:26,947 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-13 12:48:26,947 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2022-12-13 12:48:26,948 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-12-13 12:48:27,052 INFO L235 CfgBuilder]: Building ICFG [2022-12-13 12:48:27,053 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-13 12:48:27,873 INFO L276 CfgBuilder]: Performing block encoding [2022-12-13 12:48:27,884 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-13 12:48:27,884 INFO L300 CfgBuilder]: Removed 6 assume(true) statements. [2022-12-13 12:48:27,887 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 12:48:27 BoogieIcfgContainer [2022-12-13 12:48:27,887 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-13 12:48:27,890 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-13 12:48:27,890 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-13 12:48:27,892 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-13 12:48:27,892 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.12 12:48:26" (1/3) ... [2022-12-13 12:48:27,893 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6c7c23d5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 12:48:27, skipping insertion in model container [2022-12-13 12:48:27,893 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 12:48:26" (2/3) ... [2022-12-13 12:48:27,893 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6c7c23d5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 12:48:27, skipping insertion in model container [2022-12-13 12:48:27,893 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 12:48:27" (3/3) ... [2022-12-13 12:48:27,895 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-node-subst.wvr.c [2022-12-13 12:48:27,913 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-13 12:48:27,913 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 62 error locations. [2022-12-13 12:48:27,913 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-12-13 12:48:28,029 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-12-13 12:48:28,064 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 559 places, 590 transitions, 1204 flow [2022-12-13 12:48:28,225 INFO L130 PetriNetUnfolder]: 41/587 cut-off events. [2022-12-13 12:48:28,225 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-12-13 12:48:28,232 INFO L83 FinitePrefix]: Finished finitePrefix Result has 600 conditions, 587 events. 41/587 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 1034 event pairs, 0 based on Foata normal form. 0/484 useless extension candidates. Maximal degree in co-relation 485. Up to 2 conditions per place. [2022-12-13 12:48:28,233 INFO L82 GeneralOperation]: Start removeDead. Operand has 559 places, 590 transitions, 1204 flow [2022-12-13 12:48:28,242 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 551 places, 582 transitions, 1182 flow [2022-12-13 12:48:28,245 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2022-12-13 12:48:28,256 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 551 places, 582 transitions, 1182 flow [2022-12-13 12:48:28,258 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 551 places, 582 transitions, 1182 flow [2022-12-13 12:48:28,259 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 551 places, 582 transitions, 1182 flow [2022-12-13 12:48:28,361 INFO L130 PetriNetUnfolder]: 41/582 cut-off events. [2022-12-13 12:48:28,361 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-12-13 12:48:28,365 INFO L83 FinitePrefix]: Finished finitePrefix Result has 595 conditions, 582 events. 41/582 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 1033 event pairs, 0 based on Foata normal form. 0/480 useless extension candidates. Maximal degree in co-relation 485. Up to 2 conditions per place. [2022-12-13 12:48:28,373 INFO L119 LiptonReduction]: Number of co-enabled transitions 32370 [2022-12-13 12:49:39,446 WARN L233 SmtUtils]: Spent 5.76s on a formula simplification. DAG size of input: 197 DAG size of output: 196 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-12-13 12:49:48,618 WARN L233 SmtUtils]: Spent 8.14s on a formula simplification. DAG size of input: 215 DAG size of output: 212 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-12-13 12:49:49,687 INFO L134 LiptonReduction]: Checked pairs total: 53923 [2022-12-13 12:49:49,687 INFO L136 LiptonReduction]: Total number of compositions: 707 [2022-12-13 12:49:49,700 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-13 12:49:49,703 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;@63c5d3c0, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-12-13 12:49:49,703 INFO L358 AbstractCegarLoop]: Starting to check reachability of 101 error locations. [2022-12-13 12:49:49,705 INFO L130 PetriNetUnfolder]: 1/2 cut-off events. [2022-12-13 12:49:49,705 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 12:49:49,705 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 12:49:49,706 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1] [2022-12-13 12:49:49,706 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 98 more)] === [2022-12-13 12:49:49,709 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:49:49,709 INFO L85 PathProgramCache]: Analyzing trace with hash 72773, now seen corresponding path program 1 times [2022-12-13 12:49:49,718 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 12:49:49,718 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1148945713] [2022-12-13 12:49:49,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:49:49,719 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 [2022-12-13 12:49:49,719 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9b87e7a-3076-4624-a0ab-700eda9bd1a4/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 12:49:49,720 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9b87e7a-3076-4624-a0ab-700eda9bd1a4/bin/uautomizer-uyxdKDjOR8/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) [2022-12-13 12:49:49,721 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9b87e7a-3076-4624-a0ab-700eda9bd1a4/bin/uautomizer-uyxdKDjOR8/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 [2022-12-13 12:49:49,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:49:49,804 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 11 conjunts are in the unsatisfiable core [2022-12-13 12:49:49,808 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 12:49:49,980 INFO L321 Elim1Store]: treesize reduction 84, result has 30.6 percent of original size [2022-12-13 12:49:49,981 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 19 treesize of output 46 [2022-12-13 12:49:50,028 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 12:49:50,028 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 12:49:50,029 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 12:49:50,029 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1148945713] [2022-12-13 12:49:50,030 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1148945713] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 12:49:50,030 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 12:49:50,030 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-13 12:49:50,031 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1852892019] [2022-12-13 12:49:50,031 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 12:49:50,037 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 12:49:50,037 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 12:49:50,054 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 12:49:50,055 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 12:49:50,677 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 536 out of 1297 [2022-12-13 12:49:50,681 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 103 transitions, 224 flow. Second operand has 3 states, 3 states have (on average 536.6666666666666) internal successors, (1610), 3 states have internal predecessors, (1610), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:49:50,681 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 12:49:50,681 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 536 of 1297 [2022-12-13 12:49:50,682 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 12:49:55,962 INFO L130 PetriNetUnfolder]: 28972/40299 cut-off events. [2022-12-13 12:49:55,962 INFO L131 PetriNetUnfolder]: For 499/499 co-relation queries the response was YES. [2022-12-13 12:49:55,990 INFO L83 FinitePrefix]: Finished finitePrefix Result has 81108 conditions, 40299 events. 28972/40299 cut-off events. For 499/499 co-relation queries the response was YES. Maximal size of possible extension queue 2366. Compared 249586 event pairs, 26445 based on Foata normal form. 0/12138 useless extension candidates. Maximal degree in co-relation 77578. Up to 40044 conditions per place. [2022-12-13 12:49:56,150 INFO L137 encePairwiseOnDemand]: 1288/1297 looper letters, 92 selfloop transitions, 3 changer transitions 0/101 dead transitions. [2022-12-13 12:49:56,150 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 101 transitions, 410 flow [2022-12-13 12:49:56,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 12:49:56,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 12:49:56,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1709 transitions. [2022-12-13 12:49:56,164 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.439218709843228 [2022-12-13 12:49:56,165 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1709 transitions. [2022-12-13 12:49:56,165 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1709 transitions. [2022-12-13 12:49:56,168 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 12:49:56,170 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1709 transitions. [2022-12-13 12:49:56,175 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 569.6666666666666) internal successors, (1709), 3 states have internal predecessors, (1709), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:49:56,188 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 1297.0) internal successors, (5188), 4 states have internal predecessors, (5188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:49:56,190 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 1297.0) internal successors, (5188), 4 states have internal predecessors, (5188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:49:56,191 INFO L175 Difference]: Start difference. First operand has 103 places, 103 transitions, 224 flow. Second operand 3 states and 1709 transitions. [2022-12-13 12:49:56,192 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 101 transitions, 410 flow [2022-12-13 12:49:56,254 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 101 transitions, 398 flow, removed 0 selfloop flow, removed 6 redundant places. [2022-12-13 12:49:56,256 INFO L231 Difference]: Finished difference. Result has 95 places, 100 transitions, 221 flow [2022-12-13 12:49:56,257 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=1297, PETRI_DIFFERENCE_MINUEND_FLOW=202, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=98, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=95, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=221, PETRI_PLACES=95, PETRI_TRANSITIONS=100} [2022-12-13 12:49:56,260 INFO L288 CegarLoopForPetriNet]: 103 programPoint places, -8 predicate places. [2022-12-13 12:49:56,260 INFO L495 AbstractCegarLoop]: Abstraction has has 95 places, 100 transitions, 221 flow [2022-12-13 12:49:56,261 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 536.6666666666666) internal successors, (1610), 3 states have internal predecessors, (1610), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:49:56,261 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 12:49:56,261 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1] [2022-12-13 12:49:56,273 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9b87e7a-3076-4624-a0ab-700eda9bd1a4/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2022-12-13 12:49:56,462 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9b87e7a-3076-4624-a0ab-700eda9bd1a4/bin/uautomizer-uyxdKDjOR8/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 [2022-12-13 12:49:56,463 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 98 more)] === [2022-12-13 12:49:56,465 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:49:56,465 INFO L85 PathProgramCache]: Analyzing trace with hash 72772, now seen corresponding path program 1 times [2022-12-13 12:49:56,466 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 12:49:56,467 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [717756271] [2022-12-13 12:49:56,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:49:56,468 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 [2022-12-13 12:49:56,469 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9b87e7a-3076-4624-a0ab-700eda9bd1a4/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 12:49:56,472 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9b87e7a-3076-4624-a0ab-700eda9bd1a4/bin/uautomizer-uyxdKDjOR8/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) [2022-12-13 12:49:56,475 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9b87e7a-3076-4624-a0ab-700eda9bd1a4/bin/uautomizer-uyxdKDjOR8/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 [2022-12-13 12:49:56,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:49:56,599 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-13 12:49:56,600 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 12:49:56,667 INFO L321 Elim1Store]: treesize reduction 84, result has 33.9 percent of original size [2022-12-13 12:49:56,667 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 15 treesize of output 50 [2022-12-13 12:49:56,688 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 12:49:56,688 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 12:49:56,688 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 12:49:56,688 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [717756271] [2022-12-13 12:49:56,689 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [717756271] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 12:49:56,689 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 12:49:56,689 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-13 12:49:56,689 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1837734645] [2022-12-13 12:49:56,689 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 12:49:56,690 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 12:49:56,690 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 12:49:56,691 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 12:49:56,691 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 12:49:57,008 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 539 out of 1297 [2022-12-13 12:49:57,012 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 100 transitions, 221 flow. Second operand has 3 states, 3 states have (on average 539.6666666666666) internal successors, (1619), 3 states have internal predecessors, (1619), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:49:57,012 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 12:49:57,012 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 539 of 1297 [2022-12-13 12:49:57,012 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 12:50:01,533 INFO L130 PetriNetUnfolder]: 28972/40295 cut-off events. [2022-12-13 12:50:01,533 INFO L131 PetriNetUnfolder]: For 48/48 co-relation queries the response was YES. [2022-12-13 12:50:01,559 INFO L83 FinitePrefix]: Finished finitePrefix Result has 80655 conditions, 40295 events. 28972/40295 cut-off events. For 48/48 co-relation queries the response was YES. Maximal size of possible extension queue 2366. Compared 249540 event pairs, 26445 based on Foata normal form. 2/12140 useless extension candidates. Maximal degree in co-relation 80631. Up to 40041 conditions per place. [2022-12-13 12:50:01,711 INFO L137 encePairwiseOnDemand]: 1293/1297 looper letters, 90 selfloop transitions, 1 changer transitions 0/97 dead transitions. [2022-12-13 12:50:01,711 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 97 transitions, 397 flow [2022-12-13 12:50:01,712 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 12:50:01,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 12:50:01,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1709 transitions. [2022-12-13 12:50:01,715 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.439218709843228 [2022-12-13 12:50:01,715 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1709 transitions. [2022-12-13 12:50:01,715 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1709 transitions. [2022-12-13 12:50:01,716 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 12:50:01,716 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1709 transitions. [2022-12-13 12:50:01,719 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 569.6666666666666) internal successors, (1709), 3 states have internal predecessors, (1709), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:50:01,724 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 1297.0) internal successors, (5188), 4 states have internal predecessors, (5188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:50:01,726 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 1297.0) internal successors, (5188), 4 states have internal predecessors, (5188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:50:01,726 INFO L175 Difference]: Start difference. First operand has 95 places, 100 transitions, 221 flow. Second operand 3 states and 1709 transitions. [2022-12-13 12:50:01,726 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 97 transitions, 397 flow [2022-12-13 12:50:01,727 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 97 transitions, 392 flow, removed 1 selfloop flow, removed 1 redundant places. [2022-12-13 12:50:01,728 INFO L231 Difference]: Finished difference. Result has 93 places, 97 transitions, 212 flow [2022-12-13 12:50:01,728 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=1297, PETRI_DIFFERENCE_MINUEND_FLOW=210, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=97, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=96, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=212, PETRI_PLACES=93, PETRI_TRANSITIONS=97} [2022-12-13 12:50:01,729 INFO L288 CegarLoopForPetriNet]: 103 programPoint places, -10 predicate places. [2022-12-13 12:50:01,729 INFO L495 AbstractCegarLoop]: Abstraction has has 93 places, 97 transitions, 212 flow [2022-12-13 12:50:01,730 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 539.6666666666666) internal successors, (1619), 3 states have internal predecessors, (1619), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:50:01,730 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 12:50:01,730 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2022-12-13 12:50:01,741 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9b87e7a-3076-4624-a0ab-700eda9bd1a4/bin/uautomizer-uyxdKDjOR8/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 [2022-12-13 12:50:01,931 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9b87e7a-3076-4624-a0ab-700eda9bd1a4/bin/uautomizer-uyxdKDjOR8/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 [2022-12-13 12:50:01,931 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 98 more)] === [2022-12-13 12:50:01,932 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:50:01,932 INFO L85 PathProgramCache]: Analyzing trace with hash 2271324, now seen corresponding path program 1 times [2022-12-13 12:50:01,932 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 12:50:01,932 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1484028903] [2022-12-13 12:50:01,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:50:01,933 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 [2022-12-13 12:50:01,933 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9b87e7a-3076-4624-a0ab-700eda9bd1a4/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 12:50:01,934 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9b87e7a-3076-4624-a0ab-700eda9bd1a4/bin/uautomizer-uyxdKDjOR8/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) [2022-12-13 12:50:01,935 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9b87e7a-3076-4624-a0ab-700eda9bd1a4/bin/uautomizer-uyxdKDjOR8/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 [2022-12-13 12:50:01,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:50:01,997 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 11 conjunts are in the unsatisfiable core [2022-12-13 12:50:01,998 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 12:50:02,110 INFO L321 Elim1Store]: treesize reduction 78, result has 32.2 percent of original size [2022-12-13 12:50:02,111 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 17 treesize of output 44 [2022-12-13 12:50:02,160 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 12:50:02,160 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 12:50:02,343 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 12:50:02,343 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 12:50:02,343 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1484028903] [2022-12-13 12:50:02,343 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1484028903] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 12:50:02,343 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-13 12:50:02,343 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2] total 4 [2022-12-13 12:50:02,344 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [357264210] [2022-12-13 12:50:02,344 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-13 12:50:02,344 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-13 12:50:02,344 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 12:50:02,344 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-13 12:50:02,344 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-12-13 12:50:04,491 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 521 out of 1297 [2022-12-13 12:50:04,494 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 97 transitions, 212 flow. Second operand has 6 states, 6 states have (on average 522.0) internal successors, (3132), 6 states have internal predecessors, (3132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:50:04,494 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 12:50:04,494 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 521 of 1297 [2022-12-13 12:50:04,495 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 12:50:11,279 INFO L130 PetriNetUnfolder]: 28983/40227 cut-off events. [2022-12-13 12:50:11,279 INFO L131 PetriNetUnfolder]: For 48/48 co-relation queries the response was YES. [2022-12-13 12:50:11,300 INFO L83 FinitePrefix]: Finished finitePrefix Result has 80613 conditions, 40227 events. 28983/40227 cut-off events. For 48/48 co-relation queries the response was YES. Maximal size of possible extension queue 2459. Compared 248043 event pairs, 26445 based on Foata normal form. 0/12105 useless extension candidates. Maximal degree in co-relation 80605. Up to 40036 conditions per place. [2022-12-13 12:50:11,401 INFO L137 encePairwiseOnDemand]: 1286/1297 looper letters, 87 selfloop transitions, 26 changer transitions 0/119 dead transitions. [2022-12-13 12:50:11,401 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 119 transitions, 494 flow [2022-12-13 12:50:11,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-13 12:50:11,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-12-13 12:50:11,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 3250 transitions. [2022-12-13 12:50:11,406 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4176304291955795 [2022-12-13 12:50:11,406 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 3250 transitions. [2022-12-13 12:50:11,406 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 3250 transitions. [2022-12-13 12:50:11,408 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 12:50:11,408 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 3250 transitions. [2022-12-13 12:50:11,412 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 541.6666666666666) internal successors, (3250), 6 states have internal predecessors, (3250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:50:11,418 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 1297.0) internal successors, (9079), 7 states have internal predecessors, (9079), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:50:11,421 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 1297.0) internal successors, (9079), 7 states have internal predecessors, (9079), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:50:11,422 INFO L175 Difference]: Start difference. First operand has 93 places, 97 transitions, 212 flow. Second operand 6 states and 3250 transitions. [2022-12-13 12:50:11,422 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 119 transitions, 494 flow [2022-12-13 12:50:11,422 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 119 transitions, 493 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 12:50:11,424 INFO L231 Difference]: Finished difference. Result has 101 places, 119 transitions, 395 flow [2022-12-13 12:50:11,424 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=1297, PETRI_DIFFERENCE_MINUEND_FLOW=211, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=97, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=88, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=395, PETRI_PLACES=101, PETRI_TRANSITIONS=119} [2022-12-13 12:50:11,424 INFO L288 CegarLoopForPetriNet]: 103 programPoint places, -2 predicate places. [2022-12-13 12:50:11,424 INFO L495 AbstractCegarLoop]: Abstraction has has 101 places, 119 transitions, 395 flow [2022-12-13 12:50:11,425 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 522.0) internal successors, (3132), 6 states have internal predecessors, (3132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:50:11,426 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 12:50:11,426 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2022-12-13 12:50:11,436 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9b87e7a-3076-4624-a0ab-700eda9bd1a4/bin/uautomizer-uyxdKDjOR8/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)] Ended with exit code 0 [2022-12-13 12:50:11,626 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9b87e7a-3076-4624-a0ab-700eda9bd1a4/bin/uautomizer-uyxdKDjOR8/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 [2022-12-13 12:50:11,627 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 98 more)] === [2022-12-13 12:50:11,628 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:50:11,629 INFO L85 PathProgramCache]: Analyzing trace with hash -2105703792, now seen corresponding path program 1 times [2022-12-13 12:50:11,630 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 12:50:11,630 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [224341785] [2022-12-13 12:50:11,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:50:11,631 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 [2022-12-13 12:50:11,631 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9b87e7a-3076-4624-a0ab-700eda9bd1a4/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 12:50:11,634 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9b87e7a-3076-4624-a0ab-700eda9bd1a4/bin/uautomizer-uyxdKDjOR8/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) [2022-12-13 12:50:11,637 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9b87e7a-3076-4624-a0ab-700eda9bd1a4/bin/uautomizer-uyxdKDjOR8/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 [2022-12-13 12:50:11,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:50:11,793 INFO L263 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 13 conjunts are in the unsatisfiable core [2022-12-13 12:50:11,794 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 12:50:11,829 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 [2022-12-13 12:50:11,859 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 12:50:11,859 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 12:50:11,859 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 12:50:11,860 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [224341785] [2022-12-13 12:50:11,860 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [224341785] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 12:50:11,860 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 12:50:11,860 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 12:50:11,860 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [560196374] [2022-12-13 12:50:11,860 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 12:50:11,860 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 12:50:11,860 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 12:50:11,861 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 12:50:11,861 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-13 12:50:12,717 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 534 out of 1297 [2022-12-13 12:50:12,719 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 119 transitions, 395 flow. Second operand has 4 states, 4 states have (on average 535.25) internal successors, (2141), 4 states have internal predecessors, (2141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:50:12,719 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 12:50:12,719 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 534 of 1297 [2022-12-13 12:50:12,719 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 12:50:17,420 INFO L130 PetriNetUnfolder]: 28984/40230 cut-off events. [2022-12-13 12:50:17,420 INFO L131 PetriNetUnfolder]: For 57/57 co-relation queries the response was YES. [2022-12-13 12:50:17,462 INFO L83 FinitePrefix]: Finished finitePrefix Result has 80689 conditions, 40230 events. 28984/40230 cut-off events. For 57/57 co-relation queries the response was YES. Maximal size of possible extension queue 2269. Compared 247037 event pairs, 26445 based on Foata normal form. 0/12124 useless extension candidates. Maximal degree in co-relation 80676. Up to 40060 conditions per place. [2022-12-13 12:50:17,566 INFO L137 encePairwiseOnDemand]: 1292/1297 looper letters, 108 selfloop transitions, 8 changer transitions 0/122 dead transitions. [2022-12-13 12:50:17,566 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 122 transitions, 636 flow [2022-12-13 12:50:17,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 12:50:17,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-12-13 12:50:17,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 2229 transitions. [2022-12-13 12:50:17,570 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.42964533538936006 [2022-12-13 12:50:17,570 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 2229 transitions. [2022-12-13 12:50:17,570 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 2229 transitions. [2022-12-13 12:50:17,571 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 12:50:17,571 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 2229 transitions. [2022-12-13 12:50:17,574 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 557.25) internal successors, (2229), 4 states have internal predecessors, (2229), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:50:17,578 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 1297.0) internal successors, (6485), 5 states have internal predecessors, (6485), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:50:17,580 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 1297.0) internal successors, (6485), 5 states have internal predecessors, (6485), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:50:17,580 INFO L175 Difference]: Start difference. First operand has 101 places, 119 transitions, 395 flow. Second operand 4 states and 2229 transitions. [2022-12-13 12:50:17,580 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 104 places, 122 transitions, 636 flow [2022-12-13 12:50:17,581 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 104 places, 122 transitions, 624 flow, removed 6 selfloop flow, removed 0 redundant places. [2022-12-13 12:50:17,582 INFO L231 Difference]: Finished difference. Result has 105 places, 121 transitions, 419 flow [2022-12-13 12:50:17,582 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=1297, PETRI_DIFFERENCE_MINUEND_FLOW=383, PETRI_DIFFERENCE_MINUEND_PLACES=101, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=119, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=111, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=419, PETRI_PLACES=105, PETRI_TRANSITIONS=121} [2022-12-13 12:50:17,583 INFO L288 CegarLoopForPetriNet]: 103 programPoint places, 2 predicate places. [2022-12-13 12:50:17,583 INFO L495 AbstractCegarLoop]: Abstraction has has 105 places, 121 transitions, 419 flow [2022-12-13 12:50:17,583 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 535.25) internal successors, (2141), 4 states have internal predecessors, (2141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:50:17,583 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 12:50:17,583 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2022-12-13 12:50:17,595 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9b87e7a-3076-4624-a0ab-700eda9bd1a4/bin/uautomizer-uyxdKDjOR8/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)] Ended with exit code 0 [2022-12-13 12:50:17,784 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9b87e7a-3076-4624-a0ab-700eda9bd1a4/bin/uautomizer-uyxdKDjOR8/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 [2022-12-13 12:50:17,785 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 98 more)] === [2022-12-13 12:50:17,786 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:50:17,786 INFO L85 PathProgramCache]: Analyzing trace with hash -2105703793, now seen corresponding path program 1 times [2022-12-13 12:50:17,787 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 12:50:17,788 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [37554590] [2022-12-13 12:50:17,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:50:17,788 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 [2022-12-13 12:50:17,789 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9b87e7a-3076-4624-a0ab-700eda9bd1a4/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 12:50:17,791 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9b87e7a-3076-4624-a0ab-700eda9bd1a4/bin/uautomizer-uyxdKDjOR8/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) [2022-12-13 12:50:17,794 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9b87e7a-3076-4624-a0ab-700eda9bd1a4/bin/uautomizer-uyxdKDjOR8/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 [2022-12-13 12:50:17,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:50:17,893 INFO L263 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-13 12:50:17,894 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 12:50:17,898 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 [2022-12-13 12:50:17,903 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 12:50:17,903 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 12:50:17,904 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 12:50:17,904 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [37554590] [2022-12-13 12:50:17,904 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [37554590] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 12:50:17,904 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 12:50:17,904 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 12:50:17,904 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1780086280] [2022-12-13 12:50:17,904 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 12:50:17,905 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 12:50:17,905 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 12:50:17,905 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 12:50:17,905 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 12:50:18,177 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 539 out of 1297 [2022-12-13 12:50:18,179 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 105 places, 121 transitions, 419 flow. Second operand has 3 states, 3 states have (on average 540.6666666666666) internal successors, (1622), 3 states have internal predecessors, (1622), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:50:18,179 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 12:50:18,179 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 539 of 1297 [2022-12-13 12:50:18,179 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 12:50:22,415 INFO L130 PetriNetUnfolder]: 28984/40226 cut-off events. [2022-12-13 12:50:22,415 INFO L131 PetriNetUnfolder]: For 71/71 co-relation queries the response was YES. [2022-12-13 12:50:22,466 INFO L83 FinitePrefix]: Finished finitePrefix Result has 80690 conditions, 40226 events. 28984/40226 cut-off events. For 71/71 co-relation queries the response was YES. Maximal size of possible extension queue 2269. Compared 247016 event pairs, 26445 based on Foata normal form. 2/12127 useless extension candidates. Maximal degree in co-relation 80674. Up to 40033 conditions per place. [2022-12-13 12:50:22,574 INFO L137 encePairwiseOnDemand]: 1293/1297 looper letters, 107 selfloop transitions, 5 changer transitions 0/118 dead transitions. [2022-12-13 12:50:22,574 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 118 transitions, 637 flow [2022-12-13 12:50:22,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 12:50:22,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 12:50:22,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1706 transitions. [2022-12-13 12:50:22,577 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4384476998200977 [2022-12-13 12:50:22,577 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1706 transitions. [2022-12-13 12:50:22,578 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1706 transitions. [2022-12-13 12:50:22,578 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 12:50:22,578 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1706 transitions. [2022-12-13 12:50:22,580 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 568.6666666666666) internal successors, (1706), 3 states have internal predecessors, (1706), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:50:22,584 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 1297.0) internal successors, (5188), 4 states have internal predecessors, (5188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:50:22,585 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 1297.0) internal successors, (5188), 4 states have internal predecessors, (5188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:50:22,585 INFO L175 Difference]: Start difference. First operand has 105 places, 121 transitions, 419 flow. Second operand 3 states and 1706 transitions. [2022-12-13 12:50:22,585 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 104 places, 118 transitions, 637 flow [2022-12-13 12:50:22,586 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 118 transitions, 626 flow, removed 1 selfloop flow, removed 2 redundant places. [2022-12-13 12:50:22,587 INFO L231 Difference]: Finished difference. Result has 102 places, 118 transitions, 412 flow [2022-12-13 12:50:22,587 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=1297, PETRI_DIFFERENCE_MINUEND_FLOW=402, PETRI_DIFFERENCE_MINUEND_PLACES=100, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=118, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=113, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=412, PETRI_PLACES=102, PETRI_TRANSITIONS=118} [2022-12-13 12:50:22,588 INFO L288 CegarLoopForPetriNet]: 103 programPoint places, -1 predicate places. [2022-12-13 12:50:22,588 INFO L495 AbstractCegarLoop]: Abstraction has has 102 places, 118 transitions, 412 flow [2022-12-13 12:50:22,588 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 540.6666666666666) internal successors, (1622), 3 states have internal predecessors, (1622), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:50:22,588 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 12:50:22,588 INFO L209 CegarLoopForPetriNet]: trace histogram [4, 1, 1] [2022-12-13 12:50:22,601 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9b87e7a-3076-4624-a0ab-700eda9bd1a4/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2022-12-13 12:50:22,789 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9b87e7a-3076-4624-a0ab-700eda9bd1a4/bin/uautomizer-uyxdKDjOR8/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 [2022-12-13 12:50:22,789 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 98 more)] === [2022-12-13 12:50:22,790 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:50:22,790 INFO L85 PathProgramCache]: Analyzing trace with hash -1039209979, now seen corresponding path program 2 times [2022-12-13 12:50:22,791 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 12:50:22,791 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1859031437] [2022-12-13 12:50:22,791 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-13 12:50:22,792 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 [2022-12-13 12:50:22,792 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9b87e7a-3076-4624-a0ab-700eda9bd1a4/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 12:50:22,794 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9b87e7a-3076-4624-a0ab-700eda9bd1a4/bin/uautomizer-uyxdKDjOR8/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) [2022-12-13 12:50:22,797 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9b87e7a-3076-4624-a0ab-700eda9bd1a4/bin/uautomizer-uyxdKDjOR8/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 [2022-12-13 12:50:22,947 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-13 12:50:22,947 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 12:50:22,951 INFO L263 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 13 conjunts are in the unsatisfiable core [2022-12-13 12:50:22,952 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 12:50:23,048 INFO L321 Elim1Store]: treesize reduction 78, result has 32.2 percent of original size [2022-12-13 12:50:23,049 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 17 treesize of output 44 [2022-12-13 12:50:23,177 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 12:50:23,177 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 12:50:23,718 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 12:50:23,719 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 12:50:23,719 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1859031437] [2022-12-13 12:50:23,719 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1859031437] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 12:50:23,719 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-13 12:50:23,719 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2022-12-13 12:50:23,719 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [924189988] [2022-12-13 12:50:23,719 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-13 12:50:23,720 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-12-13 12:50:23,720 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 12:50:23,720 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-12-13 12:50:23,720 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2022-12-13 12:50:34,929 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 524 out of 1297 [2022-12-13 12:50:34,932 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 118 transitions, 412 flow. Second operand has 12 states, 12 states have (on average 525.0) internal successors, (6300), 12 states have internal predecessors, (6300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:50:34,932 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 12:50:34,932 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 524 of 1297 [2022-12-13 12:50:34,932 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 12:50:38,229 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.66s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-13 12:50:40,087 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.86s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-13 12:50:41,723 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.64s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-13 12:50:42,767 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.04s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-13 12:50:44,716 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.70s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-13 12:50:46,718 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-13 12:50:48,721 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-13 12:50:50,163 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.44s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-13 12:50:52,054 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.74s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-13 12:50:53,351 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.28s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-13 12:50:55,363 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.01s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-13 12:50:56,902 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.44s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-13 12:51:03,523 INFO L130 PetriNetUnfolder]: 29002/40263 cut-off events. [2022-12-13 12:51:03,524 INFO L131 PetriNetUnfolder]: For 163/163 co-relation queries the response was YES. [2022-12-13 12:51:03,579 INFO L83 FinitePrefix]: Finished finitePrefix Result has 80825 conditions, 40263 events. 29002/40263 cut-off events. For 163/163 co-relation queries the response was YES. Maximal size of possible extension queue 2459. Compared 248082 event pairs, 26445 based on Foata normal form. 16/12177 useless extension candidates. Maximal degree in co-relation 80810. Up to 40037 conditions per place. [2022-12-13 12:51:03,692 INFO L137 encePairwiseOnDemand]: 1286/1297 looper letters, 88 selfloop transitions, 61 changer transitions 0/155 dead transitions. [2022-12-13 12:51:03,692 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 113 places, 155 transitions, 918 flow [2022-12-13 12:51:03,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-12-13 12:51:03,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2022-12-13 12:51:03,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 6449 transitions. [2022-12-13 12:51:03,701 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.41435363659727575 [2022-12-13 12:51:03,701 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 6449 transitions. [2022-12-13 12:51:03,701 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 6449 transitions. [2022-12-13 12:51:03,703 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 12:51:03,703 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 6449 transitions. [2022-12-13 12:51:03,709 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 537.4166666666666) internal successors, (6449), 12 states have internal predecessors, (6449), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:51:03,719 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 1297.0) internal successors, (16861), 13 states have internal predecessors, (16861), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:51:03,721 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 1297.0) internal successors, (16861), 13 states have internal predecessors, (16861), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:51:03,721 INFO L175 Difference]: Start difference. First operand has 102 places, 118 transitions, 412 flow. Second operand 12 states and 6449 transitions. [2022-12-13 12:51:03,722 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 113 places, 155 transitions, 918 flow [2022-12-13 12:51:03,723 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 112 places, 155 transitions, 909 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 12:51:03,724 INFO L231 Difference]: Finished difference. Result has 118 places, 152 transitions, 822 flow [2022-12-13 12:51:03,725 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=1297, PETRI_DIFFERENCE_MINUEND_FLOW=407, PETRI_DIFFERENCE_MINUEND_PLACES=101, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=118, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=87, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=822, PETRI_PLACES=118, PETRI_TRANSITIONS=152} [2022-12-13 12:51:03,725 INFO L288 CegarLoopForPetriNet]: 103 programPoint places, 15 predicate places. [2022-12-13 12:51:03,725 INFO L495 AbstractCegarLoop]: Abstraction has has 118 places, 152 transitions, 822 flow [2022-12-13 12:51:03,727 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 525.0) internal successors, (6300), 12 states have internal predecessors, (6300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:51:03,727 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 12:51:03,727 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2022-12-13 12:51:03,734 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9b87e7a-3076-4624-a0ab-700eda9bd1a4/bin/uautomizer-uyxdKDjOR8/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 [2022-12-13 12:51:03,928 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9b87e7a-3076-4624-a0ab-700eda9bd1a4/bin/uautomizer-uyxdKDjOR8/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 [2022-12-13 12:51:03,929 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 98 more)] === [2022-12-13 12:51:03,929 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:51:03,930 INFO L85 PathProgramCache]: Analyzing trace with hash -852290604, now seen corresponding path program 1 times [2022-12-13 12:51:03,931 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 12:51:03,931 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2122280309] [2022-12-13 12:51:03,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:51:03,932 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 [2022-12-13 12:51:03,932 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9b87e7a-3076-4624-a0ab-700eda9bd1a4/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 12:51:03,934 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9b87e7a-3076-4624-a0ab-700eda9bd1a4/bin/uautomizer-uyxdKDjOR8/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) [2022-12-13 12:51:03,937 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9b87e7a-3076-4624-a0ab-700eda9bd1a4/bin/uautomizer-uyxdKDjOR8/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 [2022-12-13 12:51:04,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:51:04,016 INFO L263 TraceCheckSpWp]: Trace formula consists of 135 conjuncts, 13 conjunts are in the unsatisfiable core [2022-12-13 12:51:04,018 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 12:51:04,042 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 [2022-12-13 12:51:04,054 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 12:51:04,054 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 12:51:04,054 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 12:51:04,054 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2122280309] [2022-12-13 12:51:04,054 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2122280309] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 12:51:04,054 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 12:51:04,054 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 12:51:04,054 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2086283323] [2022-12-13 12:51:04,055 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 12:51:04,055 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 12:51:04,055 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 12:51:04,055 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 12:51:04,055 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-13 12:51:04,764 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 534 out of 1297 [2022-12-13 12:51:04,765 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 118 places, 152 transitions, 822 flow. Second operand has 4 states, 4 states have (on average 535.5) internal successors, (2142), 4 states have internal predecessors, (2142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:51:04,765 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 12:51:04,765 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 534 of 1297 [2022-12-13 12:51:04,765 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 12:51:09,402 INFO L130 PetriNetUnfolder]: 29003/40265 cut-off events. [2022-12-13 12:51:09,402 INFO L131 PetriNetUnfolder]: For 168/168 co-relation queries the response was YES. [2022-12-13 12:51:09,468 INFO L83 FinitePrefix]: Finished finitePrefix Result has 80951 conditions, 40265 events. 29003/40265 cut-off events. For 168/168 co-relation queries the response was YES. Maximal size of possible extension queue 2459. Compared 248415 event pairs, 26445 based on Foata normal form. 0/12162 useless extension candidates. Maximal degree in co-relation 80929. Up to 40084 conditions per place. [2022-12-13 12:51:09,567 INFO L137 encePairwiseOnDemand]: 1292/1297 looper letters, 131 selfloop transitions, 17 changer transitions 0/154 dead transitions. [2022-12-13 12:51:09,567 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 121 places, 154 transitions, 1122 flow [2022-12-13 12:51:09,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 12:51:09,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-12-13 12:51:09,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 2225 transitions. [2022-12-13 12:51:09,571 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.42887432536622977 [2022-12-13 12:51:09,571 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 2225 transitions. [2022-12-13 12:51:09,571 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 2225 transitions. [2022-12-13 12:51:09,572 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 12:51:09,572 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 2225 transitions. [2022-12-13 12:51:09,574 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 556.25) internal successors, (2225), 4 states have internal predecessors, (2225), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:51:09,578 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 1297.0) internal successors, (6485), 5 states have internal predecessors, (6485), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:51:09,579 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 1297.0) internal successors, (6485), 5 states have internal predecessors, (6485), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:51:09,579 INFO L175 Difference]: Start difference. First operand has 118 places, 152 transitions, 822 flow. Second operand 4 states and 2225 transitions. [2022-12-13 12:51:09,579 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 121 places, 154 transitions, 1122 flow [2022-12-13 12:51:09,581 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 117 places, 154 transitions, 1007 flow, removed 26 selfloop flow, removed 4 redundant places. [2022-12-13 12:51:09,583 INFO L231 Difference]: Finished difference. Result has 118 places, 154 transitions, 757 flow [2022-12-13 12:51:09,583 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=1297, PETRI_DIFFERENCE_MINUEND_FLOW=707, PETRI_DIFFERENCE_MINUEND_PLACES=114, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=152, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=135, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=757, PETRI_PLACES=118, PETRI_TRANSITIONS=154} [2022-12-13 12:51:09,584 INFO L288 CegarLoopForPetriNet]: 103 programPoint places, 15 predicate places. [2022-12-13 12:51:09,584 INFO L495 AbstractCegarLoop]: Abstraction has has 118 places, 154 transitions, 757 flow [2022-12-13 12:51:09,584 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 535.5) internal successors, (2142), 4 states have internal predecessors, (2142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:51:09,585 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 12:51:09,585 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2022-12-13 12:51:09,592 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9b87e7a-3076-4624-a0ab-700eda9bd1a4/bin/uautomizer-uyxdKDjOR8/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)] Ended with exit code 0 [2022-12-13 12:51:09,785 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9b87e7a-3076-4624-a0ab-700eda9bd1a4/bin/uautomizer-uyxdKDjOR8/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 [2022-12-13 12:51:09,786 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 98 more)] === [2022-12-13 12:51:09,786 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:51:09,786 INFO L85 PathProgramCache]: Analyzing trace with hash -852295236, now seen corresponding path program 1 times [2022-12-13 12:51:09,786 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 12:51:09,786 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [514711661] [2022-12-13 12:51:09,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:51:09,787 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 [2022-12-13 12:51:09,787 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9b87e7a-3076-4624-a0ab-700eda9bd1a4/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 12:51:09,787 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9b87e7a-3076-4624-a0ab-700eda9bd1a4/bin/uautomizer-uyxdKDjOR8/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) [2022-12-13 12:51:09,788 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9b87e7a-3076-4624-a0ab-700eda9bd1a4/bin/uautomizer-uyxdKDjOR8/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 (9)] Waiting until timeout for monitored process [2022-12-13 12:51:09,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:51:09,862 INFO L263 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 16 conjunts are in the unsatisfiable core [2022-12-13 12:51:09,864 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 12:51:09,896 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 12:51:09,897 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 12:51:09,897 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 12:51:09,897 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [514711661] [2022-12-13 12:51:09,897 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [514711661] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 12:51:09,897 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 12:51:09,897 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 12:51:09,897 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1983122387] [2022-12-13 12:51:09,897 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 12:51:09,897 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 12:51:09,897 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 12:51:09,898 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 12:51:09,898 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 12:51:10,104 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 540 out of 1297 [2022-12-13 12:51:10,105 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 118 places, 154 transitions, 757 flow. Second operand has 3 states, 3 states have (on average 542.0) internal successors, (1626), 3 states have internal predecessors, (1626), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:51:10,106 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 12:51:10,106 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 540 of 1297 [2022-12-13 12:51:10,106 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 12:51:14,797 INFO L130 PetriNetUnfolder]: 29002/40264 cut-off events. [2022-12-13 12:51:14,797 INFO L131 PetriNetUnfolder]: For 207/207 co-relation queries the response was YES. [2022-12-13 12:51:14,874 INFO L83 FinitePrefix]: Finished finitePrefix Result has 80907 conditions, 40264 events. 29002/40264 cut-off events. For 207/207 co-relation queries the response was YES. Maximal size of possible extension queue 2459. Compared 248422 event pairs, 26445 based on Foata normal form. 1/12162 useless extension candidates. Maximal degree in co-relation 80884. Up to 40100 conditions per place. [2022-12-13 12:51:14,977 INFO L137 encePairwiseOnDemand]: 1294/1297 looper letters, 145 selfloop transitions, 2 changer transitions 0/153 dead transitions. [2022-12-13 12:51:14,977 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 120 places, 153 transitions, 1045 flow [2022-12-13 12:51:14,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 12:51:14,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 12:51:14,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1708 transitions. [2022-12-13 12:51:14,980 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4389617065021845 [2022-12-13 12:51:14,980 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1708 transitions. [2022-12-13 12:51:14,980 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1708 transitions. [2022-12-13 12:51:14,981 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 12:51:14,981 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1708 transitions. [2022-12-13 12:51:14,982 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 569.3333333333334) internal successors, (1708), 3 states have internal predecessors, (1708), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:51:14,985 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 1297.0) internal successors, (5188), 4 states have internal predecessors, (5188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:51:14,985 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 1297.0) internal successors, (5188), 4 states have internal predecessors, (5188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:51:14,985 INFO L175 Difference]: Start difference. First operand has 118 places, 154 transitions, 757 flow. Second operand 3 states and 1708 transitions. [2022-12-13 12:51:14,985 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 120 places, 153 transitions, 1045 flow [2022-12-13 12:51:14,988 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 118 places, 153 transitions, 1017 flow, removed 1 selfloop flow, removed 2 redundant places. [2022-12-13 12:51:14,989 INFO L231 Difference]: Finished difference. Result has 118 places, 153 transitions, 727 flow [2022-12-13 12:51:14,989 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=1297, PETRI_DIFFERENCE_MINUEND_FLOW=723, PETRI_DIFFERENCE_MINUEND_PLACES=116, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=153, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=151, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=727, PETRI_PLACES=118, PETRI_TRANSITIONS=153} [2022-12-13 12:51:14,990 INFO L288 CegarLoopForPetriNet]: 103 programPoint places, 15 predicate places. [2022-12-13 12:51:14,990 INFO L495 AbstractCegarLoop]: Abstraction has has 118 places, 153 transitions, 727 flow [2022-12-13 12:51:14,990 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 542.0) internal successors, (1626), 3 states have internal predecessors, (1626), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:51:14,990 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 12:51:14,990 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-12-13 12:51:14,998 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9b87e7a-3076-4624-a0ab-700eda9bd1a4/bin/uautomizer-uyxdKDjOR8/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 (9)] Ended with exit code 0 [2022-12-13 12:51:15,191 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9b87e7a-3076-4624-a0ab-700eda9bd1a4/bin/uautomizer-uyxdKDjOR8/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 [2022-12-13 12:51:15,192 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 98 more)] === [2022-12-13 12:51:15,193 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:51:15,193 INFO L85 PathProgramCache]: Analyzing trace with hash -1963808173, now seen corresponding path program 1 times [2022-12-13 12:51:15,195 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 12:51:15,195 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1659883147] [2022-12-13 12:51:15,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:51:15,196 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 [2022-12-13 12:51:15,197 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9b87e7a-3076-4624-a0ab-700eda9bd1a4/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 12:51:15,200 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9b87e7a-3076-4624-a0ab-700eda9bd1a4/bin/uautomizer-uyxdKDjOR8/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) [2022-12-13 12:51:15,203 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9b87e7a-3076-4624-a0ab-700eda9bd1a4/bin/uautomizer-uyxdKDjOR8/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 (10)] Waiting until timeout for monitored process [2022-12-13 12:51:15,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:51:15,278 INFO L263 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 15 conjunts are in the unsatisfiable core [2022-12-13 12:51:15,279 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 12:51:15,304 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 [2022-12-13 12:51:15,356 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 12:51:15,356 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 12:51:15,597 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 12:51:15,597 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 12:51:15,597 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1659883147] [2022-12-13 12:51:15,597 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1659883147] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 12:51:15,597 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-13 12:51:15,597 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 6 [2022-12-13 12:51:15,597 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1184114929] [2022-12-13 12:51:15,597 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-13 12:51:15,598 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 12:51:15,598 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 12:51:15,598 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 12:51:15,598 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-12-13 12:51:19,498 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 519 out of 1297 [2022-12-13 12:51:19,500 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 118 places, 153 transitions, 727 flow. Second operand has 7 states, 7 states have (on average 521.0) internal successors, (3647), 7 states have internal predecessors, (3647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:51:19,500 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 12:51:19,500 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 519 of 1297 [2022-12-13 12:51:19,500 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 12:51:21,127 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.24s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-13 12:51:22,493 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.25s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-13 12:51:27,975 INFO L130 PetriNetUnfolder]: 29015/40286 cut-off events. [2022-12-13 12:51:27,975 INFO L131 PetriNetUnfolder]: For 190/190 co-relation queries the response was YES. [2022-12-13 12:51:28,060 INFO L83 FinitePrefix]: Finished finitePrefix Result has 80984 conditions, 40286 events. 29015/40286 cut-off events. For 190/190 co-relation queries the response was YES. Maximal size of possible extension queue 2459. Compared 248447 event pairs, 26445 based on Foata normal form. 0/12177 useless extension candidates. Maximal degree in co-relation 80960. Up to 40039 conditions per place. [2022-12-13 12:51:28,170 INFO L137 encePairwiseOnDemand]: 1284/1297 looper letters, 132 selfloop transitions, 34 changer transitions 0/172 dead transitions. [2022-12-13 12:51:28,170 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 124 places, 172 transitions, 1161 flow [2022-12-13 12:51:28,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-13 12:51:28,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-12-13 12:51:28,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 3745 transitions. [2022-12-13 12:51:28,177 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4124903623747109 [2022-12-13 12:51:28,177 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 3745 transitions. [2022-12-13 12:51:28,177 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 3745 transitions. [2022-12-13 12:51:28,178 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 12:51:28,178 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 3745 transitions. [2022-12-13 12:51:28,181 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 535.0) internal successors, (3745), 7 states have internal predecessors, (3745), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:51:28,186 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 1297.0) internal successors, (10376), 8 states have internal predecessors, (10376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:51:28,187 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 1297.0) internal successors, (10376), 8 states have internal predecessors, (10376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:51:28,187 INFO L175 Difference]: Start difference. First operand has 118 places, 153 transitions, 727 flow. Second operand 7 states and 3745 transitions. [2022-12-13 12:51:28,187 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 124 places, 172 transitions, 1161 flow [2022-12-13 12:51:28,190 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 122 places, 172 transitions, 1157 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-12-13 12:51:28,191 INFO L231 Difference]: Finished difference. Result has 125 places, 172 transitions, 957 flow [2022-12-13 12:51:28,191 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=1297, PETRI_DIFFERENCE_MINUEND_FLOW=723, PETRI_DIFFERENCE_MINUEND_PLACES=116, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=153, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=130, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=957, PETRI_PLACES=125, PETRI_TRANSITIONS=172} [2022-12-13 12:51:28,192 INFO L288 CegarLoopForPetriNet]: 103 programPoint places, 22 predicate places. [2022-12-13 12:51:28,192 INFO L495 AbstractCegarLoop]: Abstraction has has 125 places, 172 transitions, 957 flow [2022-12-13 12:51:28,192 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 521.0) internal successors, (3647), 7 states have internal predecessors, (3647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:51:28,192 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 12:51:28,192 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 12:51:28,200 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9b87e7a-3076-4624-a0ab-700eda9bd1a4/bin/uautomizer-uyxdKDjOR8/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 (10)] Ended with exit code 0 [2022-12-13 12:51:28,393 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9b87e7a-3076-4624-a0ab-700eda9bd1a4/bin/uautomizer-uyxdKDjOR8/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 [2022-12-13 12:51:28,394 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr12REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 98 more)] === [2022-12-13 12:51:28,395 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:51:28,395 INFO L85 PathProgramCache]: Analyzing trace with hash -748352442, now seen corresponding path program 1 times [2022-12-13 12:51:28,396 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 12:51:28,396 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1088401670] [2022-12-13 12:51:28,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:51:28,397 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 [2022-12-13 12:51:28,397 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9b87e7a-3076-4624-a0ab-700eda9bd1a4/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 12:51:28,400 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9b87e7a-3076-4624-a0ab-700eda9bd1a4/bin/uautomizer-uyxdKDjOR8/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) [2022-12-13 12:51:28,403 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9b87e7a-3076-4624-a0ab-700eda9bd1a4/bin/uautomizer-uyxdKDjOR8/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 (11)] Waiting until timeout for monitored process [2022-12-13 12:51:28,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:51:28,489 INFO L263 TraceCheckSpWp]: Trace formula consists of 169 conjuncts, 13 conjunts are in the unsatisfiable core [2022-12-13 12:51:28,490 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 12:51:28,601 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 12:51:28,601 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 12:51:28,702 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 12:51:28,702 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 12:51:28,702 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1088401670] [2022-12-13 12:51:28,702 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1088401670] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 12:51:28,702 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-13 12:51:28,702 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2022-12-13 12:51:28,702 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1631357648] [2022-12-13 12:51:28,703 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-13 12:51:28,703 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-12-13 12:51:28,703 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 12:51:28,703 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-12-13 12:51:28,703 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2022-12-13 12:51:30,786 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 516 out of 1297 [2022-12-13 12:51:30,788 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 125 places, 172 transitions, 957 flow. Second operand has 10 states, 10 states have (on average 517.4) internal successors, (5174), 10 states have internal predecessors, (5174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:51:30,789 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 12:51:30,789 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 516 of 1297 [2022-12-13 12:51:30,789 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 12:51:40,970 INFO L130 PetriNetUnfolder]: 58015/80545 cut-off events. [2022-12-13 12:51:40,970 INFO L131 PetriNetUnfolder]: For 421/421 co-relation queries the response was YES. [2022-12-13 12:51:41,151 INFO L83 FinitePrefix]: Finished finitePrefix Result has 161956 conditions, 80545 events. 58015/80545 cut-off events. For 421/421 co-relation queries the response was YES. Maximal size of possible extension queue 4408. Compared 539757 event pairs, 52890 based on Foata normal form. 4/24347 useless extension candidates. Maximal degree in co-relation 161929. Up to 40104 conditions per place. [2022-12-13 12:51:41,360 INFO L137 encePairwiseOnDemand]: 1288/1297 looper letters, 275 selfloop transitions, 30 changer transitions 0/311 dead transitions. [2022-12-13 12:51:41,360 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 133 places, 311 transitions, 2285 flow [2022-12-13 12:51:41,361 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-12-13 12:51:41,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-12-13 12:51:41,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 4819 transitions. [2022-12-13 12:51:41,367 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4128330334961021 [2022-12-13 12:51:41,367 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 4819 transitions. [2022-12-13 12:51:41,367 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 4819 transitions. [2022-12-13 12:51:41,368 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 12:51:41,369 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 4819 transitions. [2022-12-13 12:51:41,373 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 535.4444444444445) internal successors, (4819), 9 states have internal predecessors, (4819), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:51:41,378 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 1297.0) internal successors, (12970), 10 states have internal predecessors, (12970), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:51:41,379 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 1297.0) internal successors, (12970), 10 states have internal predecessors, (12970), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:51:41,379 INFO L175 Difference]: Start difference. First operand has 125 places, 172 transitions, 957 flow. Second operand 9 states and 4819 transitions. [2022-12-13 12:51:41,379 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 133 places, 311 transitions, 2285 flow [2022-12-13 12:51:41,384 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 131 places, 311 transitions, 2216 flow, removed 24 selfloop flow, removed 2 redundant places. [2022-12-13 12:51:41,388 INFO L231 Difference]: Finished difference. Result has 131 places, 183 transitions, 1079 flow [2022-12-13 12:51:41,388 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=1297, PETRI_DIFFERENCE_MINUEND_FLOW=894, PETRI_DIFFERENCE_MINUEND_PLACES=123, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=170, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=153, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1079, PETRI_PLACES=131, PETRI_TRANSITIONS=183} [2022-12-13 12:51:41,389 INFO L288 CegarLoopForPetriNet]: 103 programPoint places, 28 predicate places. [2022-12-13 12:51:41,389 INFO L495 AbstractCegarLoop]: Abstraction has has 131 places, 183 transitions, 1079 flow [2022-12-13 12:51:41,390 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 517.4) internal successors, (5174), 10 states have internal predecessors, (5174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:51:41,390 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 12:51:41,390 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 12:51:41,398 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9b87e7a-3076-4624-a0ab-700eda9bd1a4/bin/uautomizer-uyxdKDjOR8/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 (11)] Forceful destruction successful, exit code 0 [2022-12-13 12:51:41,590 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9b87e7a-3076-4624-a0ab-700eda9bd1a4/bin/uautomizer-uyxdKDjOR8/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 [2022-12-13 12:51:41,592 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 98 more)] === [2022-12-13 12:51:41,592 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:51:41,593 INFO L85 PathProgramCache]: Analyzing trace with hash -1728453378, now seen corresponding path program 1 times [2022-12-13 12:51:41,593 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 12:51:41,594 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [895134103] [2022-12-13 12:51:41,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:51:41,595 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 [2022-12-13 12:51:41,595 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9b87e7a-3076-4624-a0ab-700eda9bd1a4/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 12:51:41,597 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9b87e7a-3076-4624-a0ab-700eda9bd1a4/bin/uautomizer-uyxdKDjOR8/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) [2022-12-13 12:51:41,598 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9b87e7a-3076-4624-a0ab-700eda9bd1a4/bin/uautomizer-uyxdKDjOR8/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 (12)] Waiting until timeout for monitored process [2022-12-13 12:51:41,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:51:41,695 INFO L263 TraceCheckSpWp]: Trace formula consists of 177 conjuncts, 8 conjunts are in the unsatisfiable core [2022-12-13 12:51:41,696 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 12:51:41,732 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-13 12:51:41,733 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 12:51:41,733 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 12:51:41,733 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [895134103] [2022-12-13 12:51:41,733 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [895134103] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 12:51:41,733 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 12:51:41,733 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 12:51:41,733 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1582766795] [2022-12-13 12:51:41,733 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 12:51:41,733 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 12:51:41,733 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 12:51:41,733 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 12:51:41,734 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-13 12:51:42,037 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 540 out of 1297 [2022-12-13 12:51:42,038 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 131 places, 183 transitions, 1079 flow. Second operand has 4 states, 4 states have (on average 542.25) internal successors, (2169), 4 states have internal predecessors, (2169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:51:42,038 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 12:51:42,038 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 540 of 1297 [2022-12-13 12:51:42,038 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 12:51:51,585 INFO L130 PetriNetUnfolder]: 58013/80543 cut-off events. [2022-12-13 12:51:51,585 INFO L131 PetriNetUnfolder]: For 531/531 co-relation queries the response was YES. [2022-12-13 12:51:51,771 INFO L83 FinitePrefix]: Finished finitePrefix Result has 161926 conditions, 80543 events. 58013/80543 cut-off events. For 531/531 co-relation queries the response was YES. Maximal size of possible extension queue 4347. Compared 540442 event pairs, 52890 based on Foata normal form. 2/24345 useless extension candidates. Maximal degree in co-relation 161898. Up to 80192 conditions per place. [2022-12-13 12:51:51,977 INFO L137 encePairwiseOnDemand]: 1292/1297 looper letters, 161 selfloop transitions, 14 changer transitions 0/181 dead transitions. [2022-12-13 12:51:51,977 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 134 places, 181 transitions, 1403 flow [2022-12-13 12:51:51,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 12:51:51,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-12-13 12:51:51,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 2249 transitions. [2022-12-13 12:51:51,981 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4335003855050116 [2022-12-13 12:51:51,981 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 2249 transitions. [2022-12-13 12:51:51,981 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 2249 transitions. [2022-12-13 12:51:51,982 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 12:51:51,982 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 2249 transitions. [2022-12-13 12:51:51,984 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 562.25) internal successors, (2249), 4 states have internal predecessors, (2249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:51:51,987 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 1297.0) internal successors, (6485), 5 states have internal predecessors, (6485), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:51:51,987 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 1297.0) internal successors, (6485), 5 states have internal predecessors, (6485), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:51:51,987 INFO L175 Difference]: Start difference. First operand has 131 places, 183 transitions, 1079 flow. Second operand 4 states and 2249 transitions. [2022-12-13 12:51:51,987 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 134 places, 181 transitions, 1403 flow [2022-12-13 12:51:51,991 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 132 places, 181 transitions, 1398 flow, removed 1 selfloop flow, removed 2 redundant places. [2022-12-13 12:51:51,992 INFO L231 Difference]: Finished difference. Result has 132 places, 181 transitions, 1076 flow [2022-12-13 12:51:51,992 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=1297, PETRI_DIFFERENCE_MINUEND_FLOW=1048, PETRI_DIFFERENCE_MINUEND_PLACES=129, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=181, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=167, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1076, PETRI_PLACES=132, PETRI_TRANSITIONS=181} [2022-12-13 12:51:51,993 INFO L288 CegarLoopForPetriNet]: 103 programPoint places, 29 predicate places. [2022-12-13 12:51:51,993 INFO L495 AbstractCegarLoop]: Abstraction has has 132 places, 181 transitions, 1076 flow [2022-12-13 12:51:51,993 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 542.25) internal successors, (2169), 4 states have internal predecessors, (2169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:51:51,993 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 12:51:51,993 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 12:51:52,005 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9b87e7a-3076-4624-a0ab-700eda9bd1a4/bin/uautomizer-uyxdKDjOR8/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 (12)] Ended with exit code 0 [2022-12-13 12:51:52,194 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9b87e7a-3076-4624-a0ab-700eda9bd1a4/bin/uautomizer-uyxdKDjOR8/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 [2022-12-13 12:51:52,194 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 98 more)] === [2022-12-13 12:51:52,195 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:51:52,195 INFO L85 PathProgramCache]: Analyzing trace with hash -2102551395, now seen corresponding path program 1 times [2022-12-13 12:51:52,196 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 12:51:52,197 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1819116381] [2022-12-13 12:51:52,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:51:52,197 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 [2022-12-13 12:51:52,198 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9b87e7a-3076-4624-a0ab-700eda9bd1a4/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 12:51:52,199 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9b87e7a-3076-4624-a0ab-700eda9bd1a4/bin/uautomizer-uyxdKDjOR8/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) [2022-12-13 12:51:52,200 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9b87e7a-3076-4624-a0ab-700eda9bd1a4/bin/uautomizer-uyxdKDjOR8/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 (13)] Waiting until timeout for monitored process [2022-12-13 12:51:52,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:51:52,318 INFO L263 TraceCheckSpWp]: Trace formula consists of 188 conjuncts, 14 conjunts are in the unsatisfiable core [2022-12-13 12:51:52,319 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 12:51:52,432 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-13 12:51:52,432 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 12:51:52,546 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-13 12:51:52,546 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 12:51:52,546 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1819116381] [2022-12-13 12:51:52,546 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1819116381] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 12:51:52,546 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-13 12:51:52,547 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4] total 9 [2022-12-13 12:51:52,547 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1206922758] [2022-12-13 12:51:52,547 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-13 12:51:52,547 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-12-13 12:51:52,547 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 12:51:52,547 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-12-13 12:51:52,547 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2022-12-13 12:51:54,224 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 516 out of 1297 [2022-12-13 12:51:54,226 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 132 places, 181 transitions, 1076 flow. Second operand has 11 states, 11 states have (on average 517.8181818181819) internal successors, (5696), 11 states have internal predecessors, (5696), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:51:54,226 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 12:51:54,226 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 516 of 1297 [2022-12-13 12:51:54,226 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 12:52:14,199 INFO L130 PetriNetUnfolder]: 115957/160949 cut-off events. [2022-12-13 12:52:14,199 INFO L131 PetriNetUnfolder]: For 688/688 co-relation queries the response was YES. [2022-12-13 12:52:14,606 INFO L83 FinitePrefix]: Finished finitePrefix Result has 323186 conditions, 160949 events. 115957/160949 cut-off events. For 688/688 co-relation queries the response was YES. Maximal size of possible extension queue 8019. Compared 1162537 event pairs, 105780 based on Foata normal form. 4/48561 useless extension candidates. Maximal degree in co-relation 323158. Up to 80169 conditions per place. [2022-12-13 12:52:15,030 INFO L137 encePairwiseOnDemand]: 1285/1297 looper letters, 232 selfloop transitions, 36 changer transitions 0/274 dead transitions. [2022-12-13 12:52:15,030 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 140 places, 274 transitions, 1958 flow [2022-12-13 12:52:15,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-12-13 12:52:15,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-12-13 12:52:15,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 4817 transitions. [2022-12-13 12:52:15,037 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.41266169793540647 [2022-12-13 12:52:15,037 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 4817 transitions. [2022-12-13 12:52:15,037 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 4817 transitions. [2022-12-13 12:52:15,038 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 12:52:15,038 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 4817 transitions. [2022-12-13 12:52:15,042 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 535.2222222222222) internal successors, (4817), 9 states have internal predecessors, (4817), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:52:15,048 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 1297.0) internal successors, (12970), 10 states have internal predecessors, (12970), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:52:15,049 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 1297.0) internal successors, (12970), 10 states have internal predecessors, (12970), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:52:15,050 INFO L175 Difference]: Start difference. First operand has 132 places, 181 transitions, 1076 flow. Second operand 9 states and 4817 transitions. [2022-12-13 12:52:15,050 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 140 places, 274 transitions, 1958 flow [2022-12-13 12:52:15,053 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 138 places, 274 transitions, 1944 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-12-13 12:52:15,055 INFO L231 Difference]: Finished difference. Result has 138 places, 188 transitions, 1201 flow [2022-12-13 12:52:15,056 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=1297, PETRI_DIFFERENCE_MINUEND_FLOW=1050, PETRI_DIFFERENCE_MINUEND_PLACES=130, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=178, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=152, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1201, PETRI_PLACES=138, PETRI_TRANSITIONS=188} [2022-12-13 12:52:15,056 INFO L288 CegarLoopForPetriNet]: 103 programPoint places, 35 predicate places. [2022-12-13 12:52:15,056 INFO L495 AbstractCegarLoop]: Abstraction has has 138 places, 188 transitions, 1201 flow [2022-12-13 12:52:15,057 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 517.8181818181819) internal successors, (5696), 11 states have internal predecessors, (5696), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:52:15,057 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 12:52:15,057 INFO L209 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 12:52:15,069 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9b87e7a-3076-4624-a0ab-700eda9bd1a4/bin/uautomizer-uyxdKDjOR8/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 (13)] Ended with exit code 0 [2022-12-13 12:52:15,257 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9b87e7a-3076-4624-a0ab-700eda9bd1a4/bin/uautomizer-uyxdKDjOR8/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 [2022-12-13 12:52:15,258 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 98 more)] === [2022-12-13 12:52:15,259 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:52:15,260 INFO L85 PathProgramCache]: Analyzing trace with hash -759093798, now seen corresponding path program 1 times [2022-12-13 12:52:15,260 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 12:52:15,261 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1308261905] [2022-12-13 12:52:15,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:52:15,261 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 [2022-12-13 12:52:15,262 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9b87e7a-3076-4624-a0ab-700eda9bd1a4/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 12:52:15,264 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9b87e7a-3076-4624-a0ab-700eda9bd1a4/bin/uautomizer-uyxdKDjOR8/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) [2022-12-13 12:52:15,267 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9b87e7a-3076-4624-a0ab-700eda9bd1a4/bin/uautomizer-uyxdKDjOR8/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 (14)] Waiting until timeout for monitored process [2022-12-13 12:52:15,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:52:15,379 INFO L263 TraceCheckSpWp]: Trace formula consists of 172 conjuncts, 20 conjunts are in the unsatisfiable core [2022-12-13 12:52:15,380 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 12:52:15,452 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 [2022-12-13 12:52:15,555 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 7 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 12:52:15,555 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 12:52:16,329 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 12:52:16,330 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 12:52:16,330 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1308261905] [2022-12-13 12:52:16,330 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1308261905] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 12:52:16,330 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-13 12:52:16,330 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 16 [2022-12-13 12:52:16,330 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1411380083] [2022-12-13 12:52:16,330 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-13 12:52:16,330 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-12-13 12:52:16,331 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 12:52:16,331 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-12-13 12:52:16,331 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=217, Unknown=0, NotChecked=0, Total=272 [2022-12-13 12:52:34,497 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 507 out of 1297 [2022-12-13 12:52:34,501 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 138 places, 188 transitions, 1201 flow. Second operand has 17 states, 17 states have (on average 508.29411764705884) internal successors, (8641), 17 states have internal predecessors, (8641), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:52:34,501 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 12:52:34,501 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 507 of 1297 [2022-12-13 12:52:34,501 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 12:53:07,986 INFO L130 PetriNetUnfolder]: 173921/241394 cut-off events. [2022-12-13 12:53:07,986 INFO L131 PetriNetUnfolder]: For 1064/1064 co-relation queries the response was YES. [2022-12-13 12:53:08,614 INFO L83 FinitePrefix]: Finished finitePrefix Result has 484690 conditions, 241394 events. 173921/241394 cut-off events. For 1064/1064 co-relation queries the response was YES. Maximal size of possible extension queue 10558. Compared 1797058 event pairs, 158670 based on Foata normal form. 6/72812 useless extension candidates. Maximal degree in co-relation 484661. Up to 80149 conditions per place. [2022-12-13 12:53:09,291 INFO L137 encePairwiseOnDemand]: 1287/1297 looper letters, 403 selfloop transitions, 43 changer transitions 0/452 dead transitions. [2022-12-13 12:53:09,291 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 152 places, 452 transitions, 3486 flow [2022-12-13 12:53:09,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-12-13 12:53:09,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2022-12-13 12:53:09,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 7872 transitions. [2022-12-13 12:53:09,301 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.40462606013878183 [2022-12-13 12:53:09,301 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 7872 transitions. [2022-12-13 12:53:09,301 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 7872 transitions. [2022-12-13 12:53:09,303 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 12:53:09,303 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 7872 transitions. [2022-12-13 12:53:09,309 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 524.8) internal successors, (7872), 15 states have internal predecessors, (7872), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:53:09,320 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 1297.0) internal successors, (20752), 16 states have internal predecessors, (20752), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:53:09,322 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 1297.0) internal successors, (20752), 16 states have internal predecessors, (20752), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:53:09,322 INFO L175 Difference]: Start difference. First operand has 138 places, 188 transitions, 1201 flow. Second operand 15 states and 7872 transitions. [2022-12-13 12:53:09,322 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 152 places, 452 transitions, 3486 flow [2022-12-13 12:53:09,327 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 150 places, 452 transitions, 3429 flow, removed 9 selfloop flow, removed 2 redundant places. [2022-12-13 12:53:09,331 INFO L231 Difference]: Finished difference. Result has 158 places, 211 transitions, 1643 flow [2022-12-13 12:53:09,331 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=1297, PETRI_DIFFERENCE_MINUEND_FLOW=1152, PETRI_DIFFERENCE_MINUEND_PLACES=136, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=186, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=145, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=1643, PETRI_PLACES=158, PETRI_TRANSITIONS=211} [2022-12-13 12:53:09,331 INFO L288 CegarLoopForPetriNet]: 103 programPoint places, 55 predicate places. [2022-12-13 12:53:09,332 INFO L495 AbstractCegarLoop]: Abstraction has has 158 places, 211 transitions, 1643 flow [2022-12-13 12:53:09,333 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 508.29411764705884) internal successors, (8641), 17 states have internal predecessors, (8641), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:53:09,333 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 12:53:09,333 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 12:53:09,341 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9b87e7a-3076-4624-a0ab-700eda9bd1a4/bin/uautomizer-uyxdKDjOR8/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 (14)] Forceful destruction successful, exit code 0 [2022-12-13 12:53:09,533 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9b87e7a-3076-4624-a0ab-700eda9bd1a4/bin/uautomizer-uyxdKDjOR8/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 [2022-12-13 12:53:09,534 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 98 more)] === [2022-12-13 12:53:09,535 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:53:09,536 INFO L85 PathProgramCache]: Analyzing trace with hash -1917214083, now seen corresponding path program 1 times [2022-12-13 12:53:09,536 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 12:53:09,537 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1594289936] [2022-12-13 12:53:09,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:53:09,537 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 [2022-12-13 12:53:09,538 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9b87e7a-3076-4624-a0ab-700eda9bd1a4/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 12:53:09,540 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9b87e7a-3076-4624-a0ab-700eda9bd1a4/bin/uautomizer-uyxdKDjOR8/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) [2022-12-13 12:53:09,543 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9b87e7a-3076-4624-a0ab-700eda9bd1a4/bin/uautomizer-uyxdKDjOR8/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 (15)] Waiting until timeout for monitored process [2022-12-13 12:53:09,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:53:09,827 INFO L263 TraceCheckSpWp]: Trace formula consists of 204 conjuncts, 17 conjunts are in the unsatisfiable core [2022-12-13 12:53:09,828 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 12:53:09,962 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-13 12:53:09,962 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 12:53:10,193 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-13 12:53:10,193 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 12:53:10,193 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1594289936] [2022-12-13 12:53:10,194 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1594289936] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 12:53:10,194 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-13 12:53:10,194 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2022-12-13 12:53:10,194 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1710074314] [2022-12-13 12:53:10,194 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-13 12:53:10,194 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-12-13 12:53:10,194 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 12:53:10,195 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-12-13 12:53:10,195 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=142, Unknown=0, NotChecked=0, Total=182 [2022-12-13 12:53:13,702 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 516 out of 1297 [2022-12-13 12:53:13,705 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 158 places, 211 transitions, 1643 flow. Second operand has 14 states, 14 states have (on average 517.7142857142857) internal successors, (7248), 14 states have internal predecessors, (7248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:53:13,706 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 12:53:13,706 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 516 of 1297 [2022-12-13 12:53:13,706 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 12:53:46,598 INFO L130 PetriNetUnfolder]: 173909/241376 cut-off events. [2022-12-13 12:53:46,598 INFO L131 PetriNetUnfolder]: For 1416/1416 co-relation queries the response was YES. [2022-12-13 12:53:47,449 INFO L83 FinitePrefix]: Finished finitePrefix Result has 484744 conditions, 241376 events. 173909/241376 cut-off events. For 1416/1416 co-relation queries the response was YES. Maximal size of possible extension queue 10576. Compared 1802028 event pairs, 158670 based on Foata normal form. 3/72797 useless extension candidates. Maximal degree in co-relation 484707. Up to 120063 conditions per place. [2022-12-13 12:53:48,219 INFO L137 encePairwiseOnDemand]: 1281/1297 looper letters, 249 selfloop transitions, 45 changer transitions 0/300 dead transitions. [2022-12-13 12:53:48,219 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 169 places, 300 transitions, 2619 flow [2022-12-13 12:53:48,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-12-13 12:53:48,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2022-12-13 12:53:48,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 6359 transitions. [2022-12-13 12:53:48,228 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4085710614237985 [2022-12-13 12:53:48,228 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 6359 transitions. [2022-12-13 12:53:48,228 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 6359 transitions. [2022-12-13 12:53:48,229 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 12:53:48,229 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 6359 transitions. [2022-12-13 12:53:48,235 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 529.9166666666666) internal successors, (6359), 12 states have internal predecessors, (6359), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:53:48,242 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 1297.0) internal successors, (16861), 13 states have internal predecessors, (16861), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:53:48,244 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 1297.0) internal successors, (16861), 13 states have internal predecessors, (16861), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:53:48,244 INFO L175 Difference]: Start difference. First operand has 158 places, 211 transitions, 1643 flow. Second operand 12 states and 6359 transitions. [2022-12-13 12:53:48,244 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 169 places, 300 transitions, 2619 flow [2022-12-13 12:53:48,251 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 166 places, 300 transitions, 2570 flow, removed 17 selfloop flow, removed 3 redundant places. [2022-12-13 12:53:48,253 INFO L231 Difference]: Finished difference. Result has 168 places, 212 transitions, 1739 flow [2022-12-13 12:53:48,253 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=1297, PETRI_DIFFERENCE_MINUEND_FLOW=1589, PETRI_DIFFERENCE_MINUEND_PLACES=155, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=209, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=164, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1739, PETRI_PLACES=168, PETRI_TRANSITIONS=212} [2022-12-13 12:53:48,254 INFO L288 CegarLoopForPetriNet]: 103 programPoint places, 65 predicate places. [2022-12-13 12:53:48,254 INFO L495 AbstractCegarLoop]: Abstraction has has 168 places, 212 transitions, 1739 flow [2022-12-13 12:53:48,255 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 517.7142857142857) internal successors, (7248), 14 states have internal predecessors, (7248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:53:48,255 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 12:53:48,255 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 12:53:48,263 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9b87e7a-3076-4624-a0ab-700eda9bd1a4/bin/uautomizer-uyxdKDjOR8/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 (15)] Ended with exit code 0 [2022-12-13 12:53:48,455 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9b87e7a-3076-4624-a0ab-700eda9bd1a4/bin/uautomizer-uyxdKDjOR8/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 [2022-12-13 12:53:48,456 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 98 more)] === [2022-12-13 12:53:48,457 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:53:48,457 INFO L85 PathProgramCache]: Analyzing trace with hash -754582324, now seen corresponding path program 2 times [2022-12-13 12:53:48,458 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 12:53:48,458 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [827006702] [2022-12-13 12:53:48,459 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-13 12:53:48,459 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 [2022-12-13 12:53:48,459 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9b87e7a-3076-4624-a0ab-700eda9bd1a4/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 12:53:48,462 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9b87e7a-3076-4624-a0ab-700eda9bd1a4/bin/uautomizer-uyxdKDjOR8/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) [2022-12-13 12:53:48,465 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9b87e7a-3076-4624-a0ab-700eda9bd1a4/bin/uautomizer-uyxdKDjOR8/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 (16)] Waiting until timeout for monitored process [2022-12-13 12:53:48,597 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-12-13 12:53:48,598 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 12:53:48,601 INFO L263 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 8 conjunts are in the unsatisfiable core [2022-12-13 12:53:48,602 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 12:53:48,633 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-12-13 12:53:48,634 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 12:53:48,634 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 12:53:48,634 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [827006702] [2022-12-13 12:53:48,634 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [827006702] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 12:53:48,634 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 12:53:48,634 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 12:53:48,634 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [118959901] [2022-12-13 12:53:48,634 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 12:53:48,634 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 12:53:48,635 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 12:53:48,635 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 12:53:48,635 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-13 12:53:48,952 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 540 out of 1297 [2022-12-13 12:53:48,953 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 168 places, 212 transitions, 1739 flow. Second operand has 4 states, 4 states have (on average 542.75) internal successors, (2171), 4 states have internal predecessors, (2171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:53:48,953 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 12:53:48,953 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 540 of 1297 [2022-12-13 12:53:48,953 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 12:54:20,370 INFO L130 PetriNetUnfolder]: 173906/241373 cut-off events. [2022-12-13 12:54:20,370 INFO L131 PetriNetUnfolder]: For 1751/1751 co-relation queries the response was YES. [2022-12-13 12:54:21,281 INFO L83 FinitePrefix]: Finished finitePrefix Result has 484894 conditions, 241373 events. 173906/241373 cut-off events. For 1751/1751 co-relation queries the response was YES. Maximal size of possible extension queue 10514. Compared 1794754 event pairs, 158670 based on Foata normal form. 3/72794 useless extension candidates. Maximal degree in co-relation 484854. Up to 240378 conditions per place. [2022-12-13 12:54:21,974 INFO L137 encePairwiseOnDemand]: 1292/1297 looper letters, 192 selfloop transitions, 13 changer transitions 0/211 dead transitions. [2022-12-13 12:54:21,974 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 171 places, 211 transitions, 2140 flow [2022-12-13 12:54:21,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 12:54:21,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-12-13 12:54:21,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 2249 transitions. [2022-12-13 12:54:21,978 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4335003855050116 [2022-12-13 12:54:21,978 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 2249 transitions. [2022-12-13 12:54:21,978 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 2249 transitions. [2022-12-13 12:54:21,979 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 12:54:21,979 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 2249 transitions. [2022-12-13 12:54:21,981 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 562.25) internal successors, (2249), 4 states have internal predecessors, (2249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:54:21,983 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 1297.0) internal successors, (6485), 5 states have internal predecessors, (6485), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:54:21,984 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 1297.0) internal successors, (6485), 5 states have internal predecessors, (6485), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:54:21,984 INFO L175 Difference]: Start difference. First operand has 168 places, 212 transitions, 1739 flow. Second operand 4 states and 2249 transitions. [2022-12-13 12:54:21,984 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 171 places, 211 transitions, 2140 flow [2022-12-13 12:54:21,992 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 163 places, 211 transitions, 2072 flow, removed 0 selfloop flow, removed 8 redundant places. [2022-12-13 12:54:21,994 INFO L231 Difference]: Finished difference. Result has 163 places, 211 transitions, 1688 flow [2022-12-13 12:54:21,995 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=1297, PETRI_DIFFERENCE_MINUEND_FLOW=1662, PETRI_DIFFERENCE_MINUEND_PLACES=160, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=211, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=198, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1688, PETRI_PLACES=163, PETRI_TRANSITIONS=211} [2022-12-13 12:54:21,995 INFO L288 CegarLoopForPetriNet]: 103 programPoint places, 60 predicate places. [2022-12-13 12:54:21,995 INFO L495 AbstractCegarLoop]: Abstraction has has 163 places, 211 transitions, 1688 flow [2022-12-13 12:54:21,995 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 542.75) internal successors, (2171), 4 states have internal predecessors, (2171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:54:21,995 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 12:54:21,996 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 12:54:22,004 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9b87e7a-3076-4624-a0ab-700eda9bd1a4/bin/uautomizer-uyxdKDjOR8/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 (16)] Forceful destruction successful, exit code 0 [2022-12-13 12:54:22,196 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9b87e7a-3076-4624-a0ab-700eda9bd1a4/bin/uautomizer-uyxdKDjOR8/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 [2022-12-13 12:54:22,197 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 98 more)] === [2022-12-13 12:54:22,198 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:54:22,198 INFO L85 PathProgramCache]: Analyzing trace with hash -1541221357, now seen corresponding path program 1 times [2022-12-13 12:54:22,199 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 12:54:22,199 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [211329475] [2022-12-13 12:54:22,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:54:22,200 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 [2022-12-13 12:54:22,200 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9b87e7a-3076-4624-a0ab-700eda9bd1a4/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 12:54:22,203 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9b87e7a-3076-4624-a0ab-700eda9bd1a4/bin/uautomizer-uyxdKDjOR8/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) [2022-12-13 12:54:22,205 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9b87e7a-3076-4624-a0ab-700eda9bd1a4/bin/uautomizer-uyxdKDjOR8/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 (17)] Waiting until timeout for monitored process [2022-12-13 12:54:22,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:54:22,333 INFO L263 TraceCheckSpWp]: Trace formula consists of 207 conjuncts, 13 conjunts are in the unsatisfiable core [2022-12-13 12:54:22,334 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 12:54:22,468 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-12-13 12:54:22,468 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 12:54:22,606 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-12-13 12:54:22,607 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 12:54:22,607 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [211329475] [2022-12-13 12:54:22,607 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [211329475] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 12:54:22,607 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-13 12:54:22,607 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2022-12-13 12:54:22,607 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [698578920] [2022-12-13 12:54:22,607 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-13 12:54:22,607 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-12-13 12:54:22,607 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 12:54:22,608 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-12-13 12:54:22,608 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2022-12-13 12:54:24,722 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 516 out of 1297 [2022-12-13 12:54:24,725 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 163 places, 211 transitions, 1688 flow. Second operand has 12 states, 12 states have (on average 517.8333333333334) internal successors, (6214), 12 states have internal predecessors, (6214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:54:24,725 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 12:54:24,725 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 516 of 1297 [2022-12-13 12:54:24,725 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 12:55:28,181 INFO L130 PetriNetUnfolder]: 347759/482645 cut-off events. [2022-12-13 12:55:28,182 INFO L131 PetriNetUnfolder]: For 2858/2858 co-relation queries the response was YES. [2022-12-13 12:55:29,948 INFO L83 FinitePrefix]: Finished finitePrefix Result has 969079 conditions, 482645 events. 347759/482645 cut-off events. For 2858/2858 co-relation queries the response was YES. Maximal size of possible extension queue 19928. Compared 3832652 event pairs, 317340 based on Foata normal form. 12/145493 useless extension candidates. Maximal degree in co-relation 969040. Up to 240322 conditions per place. [2022-12-13 12:55:31,316 INFO L137 encePairwiseOnDemand]: 1287/1297 looper letters, 292 selfloop transitions, 68 changer transitions 0/366 dead transitions. [2022-12-13 12:55:31,317 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 171 places, 366 transitions, 3622 flow [2022-12-13 12:55:31,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-12-13 12:55:31,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-12-13 12:55:31,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 4816 transitions. [2022-12-13 12:55:31,328 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.41257603015505867 [2022-12-13 12:55:31,328 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 4816 transitions. [2022-12-13 12:55:31,328 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 4816 transitions. [2022-12-13 12:55:31,330 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 12:55:31,330 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 4816 transitions. [2022-12-13 12:55:31,338 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 535.1111111111111) internal successors, (4816), 9 states have internal predecessors, (4816), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:55:31,346 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 1297.0) internal successors, (12970), 10 states have internal predecessors, (12970), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:55:31,347 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 1297.0) internal successors, (12970), 10 states have internal predecessors, (12970), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:55:31,348 INFO L175 Difference]: Start difference. First operand has 163 places, 211 transitions, 1688 flow. Second operand 9 states and 4816 transitions. [2022-12-13 12:55:31,348 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 171 places, 366 transitions, 3622 flow [2022-12-13 12:55:31,367 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 169 places, 366 transitions, 3596 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-12-13 12:55:31,373 INFO L231 Difference]: Finished difference. Result has 169 places, 236 transitions, 2168 flow [2022-12-13 12:55:31,373 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=1297, PETRI_DIFFERENCE_MINUEND_FLOW=1650, PETRI_DIFFERENCE_MINUEND_PLACES=161, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=209, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=168, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2168, PETRI_PLACES=169, PETRI_TRANSITIONS=236} [2022-12-13 12:55:31,374 INFO L288 CegarLoopForPetriNet]: 103 programPoint places, 66 predicate places. [2022-12-13 12:55:31,374 INFO L495 AbstractCegarLoop]: Abstraction has has 169 places, 236 transitions, 2168 flow [2022-12-13 12:55:31,375 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 517.8333333333334) internal successors, (6214), 12 states have internal predecessors, (6214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:55:31,375 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 12:55:31,375 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 12:55:31,383 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9b87e7a-3076-4624-a0ab-700eda9bd1a4/bin/uautomizer-uyxdKDjOR8/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 (17)] Forceful destruction successful, exit code 0 [2022-12-13 12:55:31,575 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9b87e7a-3076-4624-a0ab-700eda9bd1a4/bin/uautomizer-uyxdKDjOR8/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 [2022-12-13 12:55:31,576 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 98 more)] === [2022-12-13 12:55:31,577 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:55:31,578 INFO L85 PathProgramCache]: Analyzing trace with hash -1541352487, now seen corresponding path program 1 times [2022-12-13 12:55:31,578 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 12:55:31,579 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1767551893] [2022-12-13 12:55:31,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:55:31,579 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 [2022-12-13 12:55:31,580 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9b87e7a-3076-4624-a0ab-700eda9bd1a4/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 12:55:31,582 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9b87e7a-3076-4624-a0ab-700eda9bd1a4/bin/uautomizer-uyxdKDjOR8/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) [2022-12-13 12:55:31,585 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9b87e7a-3076-4624-a0ab-700eda9bd1a4/bin/uautomizer-uyxdKDjOR8/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 (18)] Waiting until timeout for monitored process [2022-12-13 12:55:31,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:55:31,819 INFO L263 TraceCheckSpWp]: Trace formula consists of 192 conjuncts, 16 conjunts are in the unsatisfiable core [2022-12-13 12:55:31,820 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 12:55:31,842 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 [2022-12-13 12:55:31,902 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-12-13 12:55:31,902 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 12:55:32,282 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-12-13 12:55:32,282 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 12:55:32,282 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1767551893] [2022-12-13 12:55:32,282 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1767551893] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 12:55:32,282 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-13 12:55:32,282 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4] total 8 [2022-12-13 12:55:32,282 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1659153800] [2022-12-13 12:55:32,282 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-13 12:55:32,283 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-12-13 12:55:32,283 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 12:55:32,283 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-12-13 12:55:32,283 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2022-12-13 12:55:38,295 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 522 out of 1297 [2022-12-13 12:55:38,297 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 169 places, 236 transitions, 2168 flow. Second operand has 9 states, 9 states have (on average 524.4444444444445) internal successors, (4720), 9 states have internal predecessors, (4720), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:55:38,297 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 12:55:38,297 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 522 of 1297 [2022-12-13 12:55:38,298 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 12:55:40,057 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.25s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-13 12:55:42,383 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.26s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-13 12:55:43,834 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.17s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-13 12:55:45,361 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.53s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-13 12:55:47,246 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.67s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-13 12:57:25,292 INFO L130 PetriNetUnfolder]: 521597/723839 cut-off events. [2022-12-13 12:57:25,292 INFO L131 PetriNetUnfolder]: For 3930/3930 co-relation queries the response was YES. [2022-12-13 12:57:28,163 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1452730 conditions, 723839 events. 521597/723839 cut-off events. For 3930/3930 co-relation queries the response was YES. Maximal size of possible extension queue 31012. Compared 6033619 event pairs, 476010 based on Foata normal form. 54/218153 useless extension candidates. Maximal degree in co-relation 1452691. Up to 480258 conditions per place. [2022-12-13 12:57:30,278 INFO L137 encePairwiseOnDemand]: 1285/1297 looper letters, 210 selfloop transitions, 101 changer transitions 0/317 dead transitions. [2022-12-13 12:57:30,279 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 177 places, 317 transitions, 3054 flow [2022-12-13 12:57:30,281 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-12-13 12:57:30,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-12-13 12:57:30,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 4879 transitions. [2022-12-13 12:57:30,285 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.41797310031697077 [2022-12-13 12:57:30,285 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 4879 transitions. [2022-12-13 12:57:30,285 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 4879 transitions. [2022-12-13 12:57:30,286 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 12:57:30,286 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 4879 transitions. [2022-12-13 12:57:30,290 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 542.1111111111111) internal successors, (4879), 9 states have internal predecessors, (4879), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:57:30,295 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 1297.0) internal successors, (12970), 10 states have internal predecessors, (12970), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:57:30,296 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 1297.0) internal successors, (12970), 10 states have internal predecessors, (12970), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:57:30,297 INFO L175 Difference]: Start difference. First operand has 169 places, 236 transitions, 2168 flow. Second operand 9 states and 4879 transitions. [2022-12-13 12:57:30,297 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 177 places, 317 transitions, 3054 flow [2022-12-13 12:57:30,309 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 174 places, 317 transitions, 3025 flow, removed 2 selfloop flow, removed 3 redundant places. [2022-12-13 12:57:30,313 INFO L231 Difference]: Finished difference. Result has 179 places, 252 transitions, 2704 flow [2022-12-13 12:57:30,313 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=1297, PETRI_DIFFERENCE_MINUEND_FLOW=2139, PETRI_DIFFERENCE_MINUEND_PLACES=166, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=236, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=88, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=144, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2704, PETRI_PLACES=179, PETRI_TRANSITIONS=252} [2022-12-13 12:57:30,313 INFO L288 CegarLoopForPetriNet]: 103 programPoint places, 76 predicate places. [2022-12-13 12:57:30,313 INFO L495 AbstractCegarLoop]: Abstraction has has 179 places, 252 transitions, 2704 flow [2022-12-13 12:57:30,314 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 524.4444444444445) internal successors, (4720), 9 states have internal predecessors, (4720), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:57:30,314 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 12:57:30,314 INFO L209 CegarLoopForPetriNet]: trace histogram [10, 1, 1] [2022-12-13 12:57:30,325 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9b87e7a-3076-4624-a0ab-700eda9bd1a4/bin/uautomizer-uyxdKDjOR8/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 (18)] Ended with exit code 0 [2022-12-13 12:57:30,514 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9b87e7a-3076-4624-a0ab-700eda9bd1a4/bin/uautomizer-uyxdKDjOR8/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 [2022-12-13 12:57:30,515 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 98 more)] === [2022-12-13 12:57:30,516 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:57:30,516 INFO L85 PathProgramCache]: Analyzing trace with hash -932152667, now seen corresponding path program 3 times [2022-12-13 12:57:30,517 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 12:57:30,518 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1196316415] [2022-12-13 12:57:30,518 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-13 12:57:30,518 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 [2022-12-13 12:57:30,519 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9b87e7a-3076-4624-a0ab-700eda9bd1a4/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 12:57:30,521 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9b87e7a-3076-4624-a0ab-700eda9bd1a4/bin/uautomizer-uyxdKDjOR8/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) [2022-12-13 12:57:30,524 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9b87e7a-3076-4624-a0ab-700eda9bd1a4/bin/uautomizer-uyxdKDjOR8/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 (19)] Waiting until timeout for monitored process [2022-12-13 12:57:30,710 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2022-12-13 12:57:30,710 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 12:57:30,717 INFO L263 TraceCheckSpWp]: Trace formula consists of 175 conjuncts, 20 conjunts are in the unsatisfiable core [2022-12-13 12:57:30,719 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 12:57:30,811 INFO L321 Elim1Store]: treesize reduction 78, result has 32.2 percent of original size [2022-12-13 12:57:30,811 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 17 treesize of output 44 [2022-12-13 12:57:31,176 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 12:57:31,176 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 12:57:33,589 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 12:57:33,589 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 12:57:33,589 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1196316415] [2022-12-13 12:57:33,589 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1196316415] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 12:57:33,589 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-13 12:57:33,589 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 22 [2022-12-13 12:57:33,590 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1933690097] [2022-12-13 12:57:33,590 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-13 12:57:33,590 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-12-13 12:57:33,590 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 12:57:33,590 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-12-13 12:57:33,591 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=166, Invalid=386, Unknown=0, NotChecked=0, Total=552 [2022-12-13 12:58:19,329 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 524 out of 1297 [2022-12-13 12:58:19,334 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 179 places, 252 transitions, 2704 flow. Second operand has 24 states, 24 states have (on average 525.0) internal successors, (12600), 24 states have internal predecessors, (12600), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:58:19,334 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 12:58:19,334 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 524 of 1297 [2022-12-13 12:58:19,334 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 12:58:31,253 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-13 12:58:33,256 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-13 12:58:35,301 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-13 12:58:36,587 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.29s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-13 12:58:38,588 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-13 12:58:40,591 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-13 12:58:42,594 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-13 12:58:44,597 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-13 12:58:46,600 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-13 12:58:48,603 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-13 12:58:54,126 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-13 12:58:56,129 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-13 12:58:58,154 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-13 12:58:59,628 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.47s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-13 12:59:01,630 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-13 12:59:03,633 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-13 12:59:05,636 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-13 12:59:07,638 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-13 12:59:09,641 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-13 12:59:11,644 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers []