./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/weaver/chl-word-trans.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 38b53e6a Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a9dbe0a-ddae-46ea-865d-b1df14e3d9b3/bin/uautomizer-ZsLfNo2U6R/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a9dbe0a-ddae-46ea-865d-b1df14e3d9b3/bin/uautomizer-ZsLfNo2U6R/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a9dbe0a-ddae-46ea-865d-b1df14e3d9b3/bin/uautomizer-ZsLfNo2U6R/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a9dbe0a-ddae-46ea-865d-b1df14e3d9b3/bin/uautomizer-ZsLfNo2U6R/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/weaver/chl-word-trans.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a9dbe0a-ddae-46ea-865d-b1df14e3d9b3/bin/uautomizer-ZsLfNo2U6R/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a9dbe0a-ddae-46ea-865d-b1df14e3d9b3/bin/uautomizer-ZsLfNo2U6R --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 73462fb8dbdc39f07edabdd79150cbad579fbba379eb033cd2e89802bbb8b9a6 --- 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-38b53e6 [2022-11-25 16:58:13,555 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-25 16:58:13,557 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-25 16:58:13,580 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-25 16:58:13,580 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-25 16:58:13,582 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-25 16:58:13,583 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-25 16:58:13,585 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-25 16:58:13,587 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-25 16:58:13,588 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-25 16:58:13,589 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-25 16:58:13,591 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-25 16:58:13,591 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-25 16:58:13,592 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-25 16:58:13,594 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-25 16:58:13,595 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-25 16:58:13,596 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-25 16:58:13,597 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-25 16:58:13,599 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-25 16:58:13,601 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-25 16:58:13,603 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-25 16:58:13,610 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-25 16:58:13,611 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-25 16:58:13,612 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-25 16:58:13,616 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-25 16:58:13,617 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-25 16:58:13,617 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-25 16:58:13,618 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-25 16:58:13,619 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-25 16:58:13,620 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-25 16:58:13,621 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-25 16:58:13,622 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-25 16:58:13,623 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-25 16:58:13,633 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-25 16:58:13,634 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-25 16:58:13,634 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-25 16:58:13,635 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-25 16:58:13,635 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-25 16:58:13,636 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-25 16:58:13,637 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-25 16:58:13,638 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-25 16:58:13,639 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a9dbe0a-ddae-46ea-865d-b1df14e3d9b3/bin/uautomizer-ZsLfNo2U6R/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2022-11-25 16:58:13,662 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-25 16:58:13,663 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-25 16:58:13,663 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-25 16:58:13,664 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-25 16:58:13,664 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-25 16:58:13,665 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-25 16:58:13,666 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-25 16:58:13,666 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-25 16:58:13,666 INFO L138 SettingsManager]: * Use SBE=true [2022-11-25 16:58:13,667 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-25 16:58:13,667 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-25 16:58:13,668 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-25 16:58:13,668 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-25 16:58:13,668 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-25 16:58:13,669 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-25 16:58:13,669 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-11-25 16:58:13,669 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-11-25 16:58:13,669 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-11-25 16:58:13,670 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-25 16:58:13,670 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-25 16:58:13,670 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-25 16:58:13,671 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-25 16:58:13,671 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-25 16:58:13,671 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-25 16:58:13,672 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-25 16:58:13,672 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 16:58:13,672 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-25 16:58:13,673 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-25 16:58:13,673 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-25 16:58:13,673 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-25 16:58:13,674 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-25 16:58:13,674 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-11-25 16:58:13,674 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-25 16:58:13,674 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_8a9dbe0a-ddae-46ea-865d-b1df14e3d9b3/bin/uautomizer-ZsLfNo2U6R/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a9dbe0a-ddae-46ea-865d-b1df14e3d9b3/bin/uautomizer-ZsLfNo2U6R Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 73462fb8dbdc39f07edabdd79150cbad579fbba379eb033cd2e89802bbb8b9a6 [2022-11-25 16:58:13,947 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-25 16:58:13,968 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-25 16:58:13,970 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-25 16:58:13,971 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-25 16:58:13,972 INFO L275 PluginConnector]: CDTParser initialized [2022-11-25 16:58:13,973 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a9dbe0a-ddae-46ea-865d-b1df14e3d9b3/bin/uautomizer-ZsLfNo2U6R/../../sv-benchmarks/c/weaver/chl-word-trans.wvr.c [2022-11-25 16:58:17,039 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-25 16:58:17,260 INFO L351 CDTParser]: Found 1 translation units. [2022-11-25 16:58:17,261 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a9dbe0a-ddae-46ea-865d-b1df14e3d9b3/sv-benchmarks/c/weaver/chl-word-trans.wvr.c [2022-11-25 16:58:17,268 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a9dbe0a-ddae-46ea-865d-b1df14e3d9b3/bin/uautomizer-ZsLfNo2U6R/data/d940b3b1a/6b8cb4c58a1e49ba9825fda31c3387d1/FLAG3aa34bc39 [2022-11-25 16:58:17,283 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a9dbe0a-ddae-46ea-865d-b1df14e3d9b3/bin/uautomizer-ZsLfNo2U6R/data/d940b3b1a/6b8cb4c58a1e49ba9825fda31c3387d1 [2022-11-25 16:58:17,285 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-25 16:58:17,287 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-25 16:58:17,289 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-25 16:58:17,289 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-25 16:58:17,293 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-25 16:58:17,294 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 04:58:17" (1/1) ... [2022-11-25 16:58:17,295 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@67cbc51f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 04:58:17, skipping insertion in model container [2022-11-25 16:58:17,296 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 04:58:17" (1/1) ... [2022-11-25 16:58:17,306 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-25 16:58:17,349 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-25 16:58:17,549 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_8a9dbe0a-ddae-46ea-865d-b1df14e3d9b3/sv-benchmarks/c/weaver/chl-word-trans.wvr.c[3292,3305] [2022-11-25 16:58:17,569 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 16:58:17,583 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) [2022-11-25 16:58:17,583 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@37594765 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 04:58:17, skipping insertion in model container [2022-11-25 16:58:17,583 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-25 16:58:17,584 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2022-11-25 16:58:17,586 INFO L158 Benchmark]: Toolchain (without parser) took 297.87ms. Allocated memory was 138.4MB in the beginning and 186.6MB in the end (delta: 48.2MB). Free memory was 74.4MB in the beginning and 156.4MB in the end (delta: -82.0MB). Peak memory consumption was 14.0MB. Max. memory is 16.1GB. [2022-11-25 16:58:17,587 INFO L158 Benchmark]: CDTParser took 0.21ms. Allocated memory is still 138.4MB. Free memory is still 108.9MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-25 16:58:17,588 INFO L158 Benchmark]: CACSL2BoogieTranslator took 295.14ms. Allocated memory was 138.4MB in the beginning and 186.6MB in the end (delta: 48.2MB). Free memory was 74.0MB in the beginning and 156.4MB in the end (delta: -82.4MB). Peak memory consumption was 14.0MB. Max. memory is 16.1GB. [2022-11-25 16:58:17,589 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21ms. Allocated memory is still 138.4MB. Free memory is still 108.9MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 295.14ms. Allocated memory was 138.4MB in the beginning and 186.6MB in the end (delta: 48.2MB). Free memory was 74.0MB in the beginning and 156.4MB in the end (delta: -82.4MB). Peak memory consumption was 14.0MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 137]: 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-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a9dbe0a-ddae-46ea-865d-b1df14e3d9b3/bin/uautomizer-ZsLfNo2U6R/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a9dbe0a-ddae-46ea-865d-b1df14e3d9b3/bin/uautomizer-ZsLfNo2U6R/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a9dbe0a-ddae-46ea-865d-b1df14e3d9b3/bin/uautomizer-ZsLfNo2U6R/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a9dbe0a-ddae-46ea-865d-b1df14e3d9b3/bin/uautomizer-ZsLfNo2U6R/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/weaver/chl-word-trans.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a9dbe0a-ddae-46ea-865d-b1df14e3d9b3/bin/uautomizer-ZsLfNo2U6R/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a9dbe0a-ddae-46ea-865d-b1df14e3d9b3/bin/uautomizer-ZsLfNo2U6R --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 73462fb8dbdc39f07edabdd79150cbad579fbba379eb033cd2e89802bbb8b9a6 --- 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-38b53e6 [2022-11-25 16:58:20,014 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-25 16:58:20,017 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-25 16:58:20,088 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-25 16:58:20,088 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-25 16:58:20,092 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-25 16:58:20,095 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-25 16:58:20,098 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-25 16:58:20,100 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-25 16:58:20,106 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-25 16:58:20,108 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-25 16:58:20,111 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-25 16:58:20,111 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-25 16:58:20,114 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-25 16:58:20,115 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-25 16:58:20,122 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-25 16:58:20,124 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-25 16:58:20,125 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-25 16:58:20,127 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-25 16:58:20,133 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-25 16:58:20,135 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-25 16:58:20,138 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-25 16:58:20,139 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-25 16:58:20,140 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-25 16:58:20,151 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-25 16:58:20,151 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-25 16:58:20,151 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-25 16:58:20,154 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-25 16:58:20,154 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-25 16:58:20,156 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-25 16:58:20,156 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-25 16:58:20,158 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-25 16:58:20,160 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-25 16:58:20,161 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-25 16:58:20,162 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-25 16:58:20,162 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-25 16:58:20,163 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-25 16:58:20,163 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-25 16:58:20,163 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-25 16:58:20,164 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-25 16:58:20,165 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-25 16:58:20,170 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a9dbe0a-ddae-46ea-865d-b1df14e3d9b3/bin/uautomizer-ZsLfNo2U6R/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2022-11-25 16:58:20,212 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-25 16:58:20,212 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-25 16:58:20,214 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-25 16:58:20,214 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-25 16:58:20,215 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-25 16:58:20,215 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-25 16:58:20,216 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-25 16:58:20,216 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-25 16:58:20,217 INFO L138 SettingsManager]: * Use SBE=true [2022-11-25 16:58:20,217 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-25 16:58:20,218 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-25 16:58:20,218 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-25 16:58:20,218 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-25 16:58:20,219 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-25 16:58:20,219 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-25 16:58:20,219 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-11-25 16:58:20,219 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-11-25 16:58:20,220 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-11-25 16:58:20,220 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-25 16:58:20,220 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-25 16:58:20,220 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-11-25 16:58:20,220 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-11-25 16:58:20,221 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-25 16:58:20,221 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-25 16:58:20,221 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-25 16:58:20,221 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-25 16:58:20,222 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-25 16:58:20,222 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 16:58:20,222 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-25 16:58:20,222 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-25 16:58:20,223 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-11-25 16:58:20,223 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-11-25 16:58:20,223 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-25 16:58:20,224 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-11-25 16:58:20,224 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-25 16:58:20,224 INFO L138 SettingsManager]: * Logic for external solver=AUFBV [2022-11-25 16:58:20,224 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_8a9dbe0a-ddae-46ea-865d-b1df14e3d9b3/bin/uautomizer-ZsLfNo2U6R/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a9dbe0a-ddae-46ea-865d-b1df14e3d9b3/bin/uautomizer-ZsLfNo2U6R Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 73462fb8dbdc39f07edabdd79150cbad579fbba379eb033cd2e89802bbb8b9a6 [2022-11-25 16:58:20,676 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-25 16:58:20,721 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-25 16:58:20,724 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-25 16:58:20,725 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-25 16:58:20,726 INFO L275 PluginConnector]: CDTParser initialized [2022-11-25 16:58:20,728 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a9dbe0a-ddae-46ea-865d-b1df14e3d9b3/bin/uautomizer-ZsLfNo2U6R/../../sv-benchmarks/c/weaver/chl-word-trans.wvr.c [2022-11-25 16:58:24,126 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-25 16:58:24,374 INFO L351 CDTParser]: Found 1 translation units. [2022-11-25 16:58:24,374 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a9dbe0a-ddae-46ea-865d-b1df14e3d9b3/sv-benchmarks/c/weaver/chl-word-trans.wvr.c [2022-11-25 16:58:24,386 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a9dbe0a-ddae-46ea-865d-b1df14e3d9b3/bin/uautomizer-ZsLfNo2U6R/data/c2765a09f/c13543ea53da461cb2fc3c4571221cdb/FLAG06865566c [2022-11-25 16:58:24,419 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a9dbe0a-ddae-46ea-865d-b1df14e3d9b3/bin/uautomizer-ZsLfNo2U6R/data/c2765a09f/c13543ea53da461cb2fc3c4571221cdb [2022-11-25 16:58:24,422 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-25 16:58:24,423 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-25 16:58:24,427 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-25 16:58:24,427 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-25 16:58:24,431 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-25 16:58:24,431 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 04:58:24" (1/1) ... [2022-11-25 16:58:24,433 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2688f910 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 04:58:24, skipping insertion in model container [2022-11-25 16:58:24,433 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 04:58:24" (1/1) ... [2022-11-25 16:58:24,441 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-25 16:58:24,474 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-25 16:58:24,757 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_8a9dbe0a-ddae-46ea-865d-b1df14e3d9b3/sv-benchmarks/c/weaver/chl-word-trans.wvr.c[3292,3305] [2022-11-25 16:58:24,781 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 16:58:24,804 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2022-11-25 16:58:24,814 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-25 16:58:24,847 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_8a9dbe0a-ddae-46ea-865d-b1df14e3d9b3/sv-benchmarks/c/weaver/chl-word-trans.wvr.c[3292,3305] [2022-11-25 16:58:24,849 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 16:58:24,862 INFO L203 MainTranslator]: Completed pre-run [2022-11-25 16:58:24,909 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_8a9dbe0a-ddae-46ea-865d-b1df14e3d9b3/sv-benchmarks/c/weaver/chl-word-trans.wvr.c[3292,3305] [2022-11-25 16:58:24,912 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 16:58:24,938 INFO L208 MainTranslator]: Completed translation [2022-11-25 16:58:24,939 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 04:58:24 WrapperNode [2022-11-25 16:58:24,939 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-25 16:58:24,940 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-25 16:58:24,940 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-25 16:58:24,940 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-25 16:58:24,948 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 04:58:24" (1/1) ... [2022-11-25 16:58:24,975 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 04:58:24" (1/1) ... [2022-11-25 16:58:25,020 INFO L138 Inliner]: procedures = 27, calls = 44, calls flagged for inlining = 8, calls inlined = 12, statements flattened = 163 [2022-11-25 16:58:25,020 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-25 16:58:25,022 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-25 16:58:25,022 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-25 16:58:25,022 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-25 16:58:25,032 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 04:58:24" (1/1) ... [2022-11-25 16:58:25,033 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 04:58:24" (1/1) ... [2022-11-25 16:58:25,052 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 04:58:24" (1/1) ... [2022-11-25 16:58:25,053 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 04:58:24" (1/1) ... [2022-11-25 16:58:25,080 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 04:58:24" (1/1) ... [2022-11-25 16:58:25,085 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 04:58:24" (1/1) ... [2022-11-25 16:58:25,087 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 04:58:24" (1/1) ... [2022-11-25 16:58:25,089 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 04:58:24" (1/1) ... [2022-11-25 16:58:25,116 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-25 16:58:25,117 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-25 16:58:25,117 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-25 16:58:25,117 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-25 16:58:25,118 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 04:58:24" (1/1) ... [2022-11-25 16:58:25,126 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 16:58:25,142 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a9dbe0a-ddae-46ea-865d-b1df14e3d9b3/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 16:58:25,156 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a9dbe0a-ddae-46ea-865d-b1df14e3d9b3/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-25 16:58:25,184 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a9dbe0a-ddae-46ea-865d-b1df14e3d9b3/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-25 16:58:25,210 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-25 16:58:25,210 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-11-25 16:58:25,210 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-25 16:58:25,210 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2022-11-25 16:58:25,211 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-11-25 16:58:25,211 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-11-25 16:58:25,211 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-11-25 16:58:25,211 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-11-25 16:58:25,211 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-11-25 16:58:25,211 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-11-25 16:58:25,212 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-25 16:58:25,212 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-25 16:58:25,212 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-25 16:58:25,212 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-25 16:58:25,212 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2022-11-25 16:58:25,214 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-25 16:58:25,389 INFO L235 CfgBuilder]: Building ICFG [2022-11-25 16:58:25,391 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-25 16:58:26,354 INFO L276 CfgBuilder]: Performing block encoding [2022-11-25 16:58:26,372 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-25 16:58:26,372 INFO L300 CfgBuilder]: Removed 6 assume(true) statements. [2022-11-25 16:58:26,375 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 04:58:26 BoogieIcfgContainer [2022-11-25 16:58:26,375 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-25 16:58:26,377 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-25 16:58:26,377 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-25 16:58:26,383 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-25 16:58:26,384 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 04:58:24" (1/3) ... [2022-11-25 16:58:26,385 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@66fa9f6c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 04:58:26, skipping insertion in model container [2022-11-25 16:58:26,385 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 04:58:24" (2/3) ... [2022-11-25 16:58:26,388 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@66fa9f6c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 04:58:26, skipping insertion in model container [2022-11-25 16:58:26,388 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 04:58:26" (3/3) ... [2022-11-25 16:58:26,390 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-word-trans.wvr.c [2022-11-25 16:58:26,410 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-25 16:58:26,410 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 44 error locations. [2022-11-25 16:58:26,410 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-25 16:58:26,583 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-11-25 16:58:26,634 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 321 places, 339 transitions, 702 flow [2022-11-25 16:58:26,802 INFO L130 PetriNetUnfolder]: 28/336 cut-off events. [2022-11-25 16:58:26,802 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-11-25 16:58:26,815 INFO L83 FinitePrefix]: Finished finitePrefix Result has 349 conditions, 336 events. 28/336 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 620 event pairs, 0 based on Foata normal form. 0/264 useless extension candidates. Maximal degree in co-relation 261. Up to 3 conditions per place. [2022-11-25 16:58:26,816 INFO L82 GeneralOperation]: Start removeDead. Operand has 321 places, 339 transitions, 702 flow [2022-11-25 16:58:26,828 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 313 places, 331 transitions, 680 flow [2022-11-25 16:58:26,832 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-25 16:58:26,846 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 313 places, 331 transitions, 680 flow [2022-11-25 16:58:26,849 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 313 places, 331 transitions, 680 flow [2022-11-25 16:58:26,850 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 313 places, 331 transitions, 680 flow [2022-11-25 16:58:26,924 INFO L130 PetriNetUnfolder]: 28/331 cut-off events. [2022-11-25 16:58:26,924 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-11-25 16:58:26,926 INFO L83 FinitePrefix]: Finished finitePrefix Result has 344 conditions, 331 events. 28/331 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 622 event pairs, 0 based on Foata normal form. 0/260 useless extension candidates. Maximal degree in co-relation 261. Up to 3 conditions per place. [2022-11-25 16:58:26,937 INFO L119 LiptonReduction]: Number of co-enabled transitions 12768 [2022-11-25 16:59:13,348 INFO L134 LiptonReduction]: Checked pairs total: 24254 [2022-11-25 16:59:13,348 INFO L136 LiptonReduction]: Total number of compositions: 361 [2022-11-25 16:59:13,365 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-25 16:59:13,371 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;@6d3f4109, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-25 16:59:13,372 INFO L358 AbstractCegarLoop]: Starting to check reachability of 71 error locations. [2022-11-25 16:59:13,375 INFO L130 PetriNetUnfolder]: 1/2 cut-off events. [2022-11-25 16:59:13,376 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-25 16:59:13,376 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 16:59:13,377 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1] [2022-11-25 16:59:13,377 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 68 more)] === [2022-11-25 16:59:13,382 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 16:59:13,383 INFO L85 PathProgramCache]: Analyzing trace with hash 41520, now seen corresponding path program 1 times [2022-11-25 16:59:13,397 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-25 16:59:13,398 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1674431466] [2022-11-25 16:59:13,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 16:59:13,399 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 [2022-11-25 16:59:13,399 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a9dbe0a-ddae-46ea-865d-b1df14e3d9b3/bin/uautomizer-ZsLfNo2U6R/mathsat [2022-11-25 16:59:13,403 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a9dbe0a-ddae-46ea-865d-b1df14e3d9b3/bin/uautomizer-ZsLfNo2U6R/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) [2022-11-25 16:59:13,432 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a9dbe0a-ddae-46ea-865d-b1df14e3d9b3/bin/uautomizer-ZsLfNo2U6R/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 [2022-11-25 16:59:13,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:59:13,549 INFO L263 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-25 16:59:13,555 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 16:59:13,790 INFO L321 Elim1Store]: treesize reduction 84, result has 33.9 percent of original size [2022-11-25 16:59:13,791 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 [2022-11-25 16:59:13,823 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 16:59:13,823 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 16:59:13,824 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-25 16:59:13,824 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1674431466] [2022-11-25 16:59:13,824 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1674431466] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 16:59:13,825 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 16:59:13,825 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-25 16:59:13,826 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [583423382] [2022-11-25 16:59:13,827 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 16:59:13,834 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 16:59:13,835 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-25 16:59:13,855 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 16:59:13,857 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 16:59:14,143 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 304 out of 700 [2022-11-25 16:59:14,147 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 82 transitions, 182 flow. Second operand has 3 states, 3 states have (on average 304.6666666666667) internal successors, (914), 3 states have internal predecessors, (914), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:59:14,147 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 16:59:14,147 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 304 of 700 [2022-11-25 16:59:14,148 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 16:59:19,133 INFO L130 PetriNetUnfolder]: 18918/25241 cut-off events. [2022-11-25 16:59:19,133 INFO L131 PetriNetUnfolder]: For 406/406 co-relation queries the response was YES. [2022-11-25 16:59:19,173 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50969 conditions, 25241 events. 18918/25241 cut-off events. For 406/406 co-relation queries the response was YES. Maximal size of possible extension queue 1322. Compared 131783 event pairs, 14651 based on Foata normal form. 0/7930 useless extension candidates. Maximal degree in co-relation 48130. Up to 25225 conditions per place. [2022-11-25 16:59:19,337 INFO L137 encePairwiseOnDemand]: 691/700 looper letters, 72 selfloop transitions, 1 changer transitions 0/74 dead transitions. [2022-11-25 16:59:19,337 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 74 transitions, 312 flow [2022-11-25 16:59:19,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 16:59:19,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-25 16:59:19,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 993 transitions. [2022-11-25 16:59:19,361 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.47285714285714286 [2022-11-25 16:59:19,362 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 993 transitions. [2022-11-25 16:59:19,364 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 993 transitions. [2022-11-25 16:59:19,369 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 16:59:19,372 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 993 transitions. [2022-11-25 16:59:19,380 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 331.0) internal successors, (993), 3 states have internal predecessors, (993), 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) [2022-11-25 16:59:19,393 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 700.0) internal successors, (2800), 4 states have internal predecessors, (2800), 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) [2022-11-25 16:59:19,396 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 700.0) internal successors, (2800), 4 states have internal predecessors, (2800), 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) [2022-11-25 16:59:19,399 INFO L175 Difference]: Start difference. First operand has 81 places, 82 transitions, 182 flow. Second operand 3 states and 993 transitions. [2022-11-25 16:59:19,404 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 74 transitions, 312 flow [2022-11-25 16:59:19,416 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 74 transitions, 300 flow, removed 0 selfloop flow, removed 6 redundant places. [2022-11-25 16:59:19,419 INFO L231 Difference]: Finished difference. Result has 69 places, 74 transitions, 156 flow [2022-11-25 16:59:19,422 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=700, PETRI_DIFFERENCE_MINUEND_FLOW=154, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=156, PETRI_PLACES=69, PETRI_TRANSITIONS=74} [2022-11-25 16:59:19,426 INFO L288 CegarLoopForPetriNet]: 81 programPoint places, -12 predicate places. [2022-11-25 16:59:19,426 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 74 transitions, 156 flow [2022-11-25 16:59:19,428 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 304.6666666666667) internal successors, (914), 3 states have internal predecessors, (914), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:59:19,429 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 16:59:19,429 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1] [2022-11-25 16:59:19,455 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a9dbe0a-ddae-46ea-865d-b1df14e3d9b3/bin/uautomizer-ZsLfNo2U6R/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 [2022-11-25 16:59:19,635 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a9dbe0a-ddae-46ea-865d-b1df14e3d9b3/bin/uautomizer-ZsLfNo2U6R/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 [2022-11-25 16:59:19,635 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 68 more)] === [2022-11-25 16:59:19,636 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 16:59:19,636 INFO L85 PathProgramCache]: Analyzing trace with hash 41519, now seen corresponding path program 1 times [2022-11-25 16:59:19,637 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-25 16:59:19,637 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1055297419] [2022-11-25 16:59:19,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 16:59:19,637 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 [2022-11-25 16:59:19,638 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a9dbe0a-ddae-46ea-865d-b1df14e3d9b3/bin/uautomizer-ZsLfNo2U6R/mathsat [2022-11-25 16:59:19,640 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a9dbe0a-ddae-46ea-865d-b1df14e3d9b3/bin/uautomizer-ZsLfNo2U6R/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) [2022-11-25 16:59:19,710 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a9dbe0a-ddae-46ea-865d-b1df14e3d9b3/bin/uautomizer-ZsLfNo2U6R/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 [2022-11-25 16:59:19,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:59:19,783 INFO L263 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-25 16:59:19,784 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 16:59:19,939 INFO L321 Elim1Store]: treesize reduction 78, result has 32.2 percent of original size [2022-11-25 16:59:19,939 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 [2022-11-25 16:59:19,970 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 16:59:19,970 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 16:59:19,971 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-25 16:59:19,971 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1055297419] [2022-11-25 16:59:19,971 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1055297419] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 16:59:19,971 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 16:59:19,972 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-25 16:59:19,972 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1629095986] [2022-11-25 16:59:19,972 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 16:59:19,973 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 16:59:19,973 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-25 16:59:19,974 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 16:59:19,974 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 16:59:20,517 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 304 out of 700 [2022-11-25 16:59:20,519 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 74 transitions, 156 flow. Second operand has 3 states, 3 states have (on average 304.6666666666667) internal successors, (914), 3 states have internal predecessors, (914), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:59:20,519 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 16:59:20,519 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 304 of 700 [2022-11-25 16:59:20,519 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 16:59:26,918 INFO L130 PetriNetUnfolder]: 37835/50478 cut-off events. [2022-11-25 16:59:26,918 INFO L131 PetriNetUnfolder]: For 130/130 co-relation queries the response was YES. [2022-11-25 16:59:26,962 INFO L83 FinitePrefix]: Finished finitePrefix Result has 101320 conditions, 50478 events. 37835/50478 cut-off events. For 130/130 co-relation queries the response was YES. Maximal size of possible extension queue 2341. Compared 286314 event pairs, 29302 based on Foata normal form. 0/15882 useless extension candidates. Maximal degree in co-relation 101314. Up to 25226 conditions per place. [2022-11-25 16:59:27,216 INFO L137 encePairwiseOnDemand]: 691/700 looper letters, 136 selfloop transitions, 6 changer transitions 0/143 dead transitions. [2022-11-25 16:59:27,216 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 143 transitions, 584 flow [2022-11-25 16:59:27,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 16:59:27,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-25 16:59:27,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1057 transitions. [2022-11-25 16:59:27,221 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5033333333333333 [2022-11-25 16:59:27,221 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1057 transitions. [2022-11-25 16:59:27,221 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1057 transitions. [2022-11-25 16:59:27,222 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 16:59:27,222 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1057 transitions. [2022-11-25 16:59:27,226 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 352.3333333333333) internal successors, (1057), 3 states have internal predecessors, (1057), 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) [2022-11-25 16:59:27,231 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 700.0) internal successors, (2800), 4 states have internal predecessors, (2800), 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) [2022-11-25 16:59:27,233 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 700.0) internal successors, (2800), 4 states have internal predecessors, (2800), 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) [2022-11-25 16:59:27,233 INFO L175 Difference]: Start difference. First operand has 69 places, 74 transitions, 156 flow. Second operand 3 states and 1057 transitions. [2022-11-25 16:59:27,233 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 143 transitions, 584 flow [2022-11-25 16:59:27,235 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 143 transitions, 583 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-25 16:59:27,239 INFO L231 Difference]: Finished difference. Result has 72 places, 79 transitions, 205 flow [2022-11-25 16:59:27,239 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=700, PETRI_DIFFERENCE_MINUEND_FLOW=155, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=205, PETRI_PLACES=72, PETRI_TRANSITIONS=79} [2022-11-25 16:59:27,240 INFO L288 CegarLoopForPetriNet]: 81 programPoint places, -9 predicate places. [2022-11-25 16:59:27,241 INFO L495 AbstractCegarLoop]: Abstraction has has 72 places, 79 transitions, 205 flow [2022-11-25 16:59:27,242 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 304.6666666666667) internal successors, (914), 3 states have internal predecessors, (914), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:59:27,243 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 16:59:27,243 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2022-11-25 16:59:27,265 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a9dbe0a-ddae-46ea-865d-b1df14e3d9b3/bin/uautomizer-ZsLfNo2U6R/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)] Forceful destruction successful, exit code 0 [2022-11-25 16:59:27,454 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a9dbe0a-ddae-46ea-865d-b1df14e3d9b3/bin/uautomizer-ZsLfNo2U6R/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 [2022-11-25 16:59:27,455 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 68 more)] === [2022-11-25 16:59:27,455 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 16:59:27,456 INFO L85 PathProgramCache]: Analyzing trace with hash 1292927, now seen corresponding path program 1 times [2022-11-25 16:59:27,456 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-25 16:59:27,457 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [165541301] [2022-11-25 16:59:27,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 16:59:27,457 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 [2022-11-25 16:59:27,458 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a9dbe0a-ddae-46ea-865d-b1df14e3d9b3/bin/uautomizer-ZsLfNo2U6R/mathsat [2022-11-25 16:59:27,459 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a9dbe0a-ddae-46ea-865d-b1df14e3d9b3/bin/uautomizer-ZsLfNo2U6R/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) [2022-11-25 16:59:27,464 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a9dbe0a-ddae-46ea-865d-b1df14e3d9b3/bin/uautomizer-ZsLfNo2U6R/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 [2022-11-25 16:59:27,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:59:27,536 INFO L263 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-25 16:59:27,538 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 16:59:27,690 INFO L321 Elim1Store]: treesize reduction 78, result has 32.2 percent of original size [2022-11-25 16:59:27,690 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 [2022-11-25 16:59:27,775 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 16:59:27,775 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 16:59:28,035 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 16:59:28,036 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-25 16:59:28,036 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [165541301] [2022-11-25 16:59:28,036 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [165541301] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 16:59:28,036 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-25 16:59:28,037 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2] total 4 [2022-11-25 16:59:28,037 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [157489621] [2022-11-25 16:59:28,037 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-25 16:59:28,038 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-25 16:59:28,038 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-25 16:59:28,039 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-25 16:59:28,039 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-11-25 16:59:30,295 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 289 out of 700 [2022-11-25 16:59:30,298 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 79 transitions, 205 flow. Second operand has 6 states, 6 states have (on average 290.0) internal successors, (1740), 6 states have internal predecessors, (1740), 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) [2022-11-25 16:59:30,298 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 16:59:30,298 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 289 of 700 [2022-11-25 16:59:30,299 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 16:59:31,853 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 [] [2022-11-25 16:59:33,796 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.79s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-25 16:59:42,515 INFO L130 PetriNetUnfolder]: 56762/75731 cut-off events. [2022-11-25 16:59:42,515 INFO L131 PetriNetUnfolder]: For 195/195 co-relation queries the response was YES. [2022-11-25 16:59:42,578 INFO L83 FinitePrefix]: Finished finitePrefix Result has 152048 conditions, 75731 events. 56762/75731 cut-off events. For 195/195 co-relation queries the response was YES. Maximal size of possible extension queue 3416. Compared 450031 event pairs, 43953 based on Foata normal form. 0/23855 useless extension candidates. Maximal degree in co-relation 152039. Up to 25227 conditions per place. [2022-11-25 16:59:42,917 INFO L137 encePairwiseOnDemand]: 688/700 looper letters, 200 selfloop transitions, 27 changer transitions 0/228 dead transitions. [2022-11-25 16:59:42,917 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 228 transitions, 1011 flow [2022-11-25 16:59:42,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-25 16:59:42,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-25 16:59:42,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1970 transitions. [2022-11-25 16:59:42,924 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.46904761904761905 [2022-11-25 16:59:42,924 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1970 transitions. [2022-11-25 16:59:42,924 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1970 transitions. [2022-11-25 16:59:42,926 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 16:59:42,926 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1970 transitions. [2022-11-25 16:59:42,932 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 328.3333333333333) internal successors, (1970), 6 states have internal predecessors, (1970), 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) [2022-11-25 16:59:42,941 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 700.0) internal successors, (4900), 7 states have internal predecessors, (4900), 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) [2022-11-25 16:59:42,944 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 700.0) internal successors, (4900), 7 states have internal predecessors, (4900), 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) [2022-11-25 16:59:42,944 INFO L175 Difference]: Start difference. First operand has 72 places, 79 transitions, 205 flow. Second operand 6 states and 1970 transitions. [2022-11-25 16:59:42,944 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 228 transitions, 1011 flow [2022-11-25 16:59:42,948 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 228 transitions, 987 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-25 16:59:42,951 INFO L231 Difference]: Finished difference. Result has 79 places, 100 transitions, 397 flow [2022-11-25 16:59:42,951 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=700, PETRI_DIFFERENCE_MINUEND_FLOW=193, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=397, PETRI_PLACES=79, PETRI_TRANSITIONS=100} [2022-11-25 16:59:42,952 INFO L288 CegarLoopForPetriNet]: 81 programPoint places, -2 predicate places. [2022-11-25 16:59:42,952 INFO L495 AbstractCegarLoop]: Abstraction has has 79 places, 100 transitions, 397 flow [2022-11-25 16:59:42,954 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 290.0) internal successors, (1740), 6 states have internal predecessors, (1740), 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) [2022-11-25 16:59:42,954 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 16:59:42,954 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2022-11-25 16:59:42,967 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a9dbe0a-ddae-46ea-865d-b1df14e3d9b3/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2022-11-25 16:59:43,155 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a9dbe0a-ddae-46ea-865d-b1df14e3d9b3/bin/uautomizer-ZsLfNo2U6R/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 [2022-11-25 16:59:43,155 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 68 more)] === [2022-11-25 16:59:43,156 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 16:59:43,156 INFO L85 PathProgramCache]: Analyzing trace with hash 40168066, now seen corresponding path program 1 times [2022-11-25 16:59:43,156 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-25 16:59:43,157 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2101522186] [2022-11-25 16:59:43,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 16:59:43,157 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 [2022-11-25 16:59:43,157 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a9dbe0a-ddae-46ea-865d-b1df14e3d9b3/bin/uautomizer-ZsLfNo2U6R/mathsat [2022-11-25 16:59:43,159 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a9dbe0a-ddae-46ea-865d-b1df14e3d9b3/bin/uautomizer-ZsLfNo2U6R/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) [2022-11-25 16:59:43,160 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a9dbe0a-ddae-46ea-865d-b1df14e3d9b3/bin/uautomizer-ZsLfNo2U6R/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 [2022-11-25 16:59:43,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:59:43,292 INFO L263 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-25 16:59:43,295 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 16:59:43,337 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 16:59:43,339 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 16:59:43,346 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 16:59:43,349 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 16:59:43,436 INFO L321 Elim1Store]: treesize reduction 20, result has 48.7 percent of original size [2022-11-25 16:59:43,436 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 15 treesize of output 29 [2022-11-25 16:59:43,483 INFO L321 Elim1Store]: treesize reduction 9, result has 10.0 percent of original size [2022-11-25 16:59:43,484 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 19 [2022-11-25 16:59:43,556 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 16:59:43,558 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2022-11-25 16:59:43,598 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 16:59:43,600 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2022-11-25 16:59:43,640 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 16:59:43,641 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 16:59:43,641 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-25 16:59:43,641 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2101522186] [2022-11-25 16:59:43,641 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2101522186] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 16:59:43,641 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 16:59:43,641 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-25 16:59:43,642 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1790199205] [2022-11-25 16:59:43,642 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 16:59:43,642 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-25 16:59:43,642 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-25 16:59:43,643 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-25 16:59:43,643 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-25 16:59:44,470 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 311 out of 700 [2022-11-25 16:59:44,472 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 100 transitions, 397 flow. Second operand has 4 states, 4 states have (on average 312.0) internal successors, (1248), 4 states have internal predecessors, (1248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:59:44,473 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 16:59:44,473 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 311 of 700 [2022-11-25 16:59:44,473 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 16:59:50,738 INFO L130 PetriNetUnfolder]: 43614/58758 cut-off events. [2022-11-25 16:59:50,738 INFO L131 PetriNetUnfolder]: For 203/203 co-relation queries the response was YES. [2022-11-25 16:59:50,806 INFO L83 FinitePrefix]: Finished finitePrefix Result has 118164 conditions, 58758 events. 43614/58758 cut-off events. For 203/203 co-relation queries the response was YES. Maximal size of possible extension queue 2798. Compared 348957 event pairs, 33600 based on Foata normal form. 0/19883 useless extension candidates. Maximal degree in co-relation 118151. Up to 58710 conditions per place. [2022-11-25 16:59:50,971 INFO L137 encePairwiseOnDemand]: 697/700 looper letters, 94 selfloop transitions, 1 changer transitions 0/96 dead transitions. [2022-11-25 16:59:50,971 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 96 transitions, 567 flow [2022-11-25 16:59:50,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 16:59:50,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-25 16:59:50,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1006 transitions. [2022-11-25 16:59:50,976 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.47904761904761906 [2022-11-25 16:59:50,976 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1006 transitions. [2022-11-25 16:59:50,976 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1006 transitions. [2022-11-25 16:59:50,980 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 16:59:50,980 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1006 transitions. [2022-11-25 16:59:50,983 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 335.3333333333333) internal successors, (1006), 3 states have internal predecessors, (1006), 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) [2022-11-25 16:59:50,988 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 700.0) internal successors, (2800), 4 states have internal predecessors, (2800), 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) [2022-11-25 16:59:50,990 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 700.0) internal successors, (2800), 4 states have internal predecessors, (2800), 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) [2022-11-25 16:59:50,990 INFO L175 Difference]: Start difference. First operand has 79 places, 100 transitions, 397 flow. Second operand 3 states and 1006 transitions. [2022-11-25 16:59:50,991 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 96 transitions, 567 flow [2022-11-25 16:59:50,993 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 96 transitions, 537 flow, removed 9 selfloop flow, removed 1 redundant places. [2022-11-25 16:59:50,995 INFO L231 Difference]: Finished difference. Result has 78 places, 96 transitions, 349 flow [2022-11-25 16:59:50,995 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=700, PETRI_DIFFERENCE_MINUEND_FLOW=347, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=96, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=95, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=349, PETRI_PLACES=78, PETRI_TRANSITIONS=96} [2022-11-25 16:59:50,996 INFO L288 CegarLoopForPetriNet]: 81 programPoint places, -3 predicate places. [2022-11-25 16:59:50,997 INFO L495 AbstractCegarLoop]: Abstraction has has 78 places, 96 transitions, 349 flow [2022-11-25 16:59:50,998 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 312.0) internal successors, (1248), 4 states have internal predecessors, (1248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:59:50,998 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 16:59:50,998 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2022-11-25 16:59:51,016 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a9dbe0a-ddae-46ea-865d-b1df14e3d9b3/bin/uautomizer-ZsLfNo2U6R/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 [2022-11-25 16:59:51,210 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a9dbe0a-ddae-46ea-865d-b1df14e3d9b3/bin/uautomizer-ZsLfNo2U6R/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 [2022-11-25 16:59:51,211 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 68 more)] === [2022-11-25 16:59:51,211 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 16:59:51,211 INFO L85 PathProgramCache]: Analyzing trace with hash 40168064, now seen corresponding path program 1 times [2022-11-25 16:59:51,211 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-25 16:59:51,212 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1485125766] [2022-11-25 16:59:51,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 16:59:51,212 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 [2022-11-25 16:59:51,212 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a9dbe0a-ddae-46ea-865d-b1df14e3d9b3/bin/uautomizer-ZsLfNo2U6R/mathsat [2022-11-25 16:59:51,213 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a9dbe0a-ddae-46ea-865d-b1df14e3d9b3/bin/uautomizer-ZsLfNo2U6R/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) [2022-11-25 16:59:51,215 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a9dbe0a-ddae-46ea-865d-b1df14e3d9b3/bin/uautomizer-ZsLfNo2U6R/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 [2022-11-25 16:59:51,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:59:51,375 INFO L263 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 15 conjunts are in the unsatisfiable core [2022-11-25 16:59:51,378 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 16:59:51,400 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 16:59:51,477 INFO L321 Elim1Store]: treesize reduction 86, result has 25.9 percent of original size [2022-11-25 16:59:51,478 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 6 case distinctions, treesize of input 38 treesize of output 55 [2022-11-25 16:59:51,572 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 16:59:51,573 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 20 [2022-11-25 16:59:51,631 INFO L321 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2022-11-25 16:59:51,631 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 20 [2022-11-25 16:59:51,648 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 16:59:51,648 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 16:59:51,648 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-25 16:59:51,648 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1485125766] [2022-11-25 16:59:51,649 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1485125766] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 16:59:51,649 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 16:59:51,649 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-25 16:59:51,649 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [639809324] [2022-11-25 16:59:51,649 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 16:59:51,649 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-25 16:59:51,650 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-25 16:59:51,650 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-25 16:59:51,650 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-25 16:59:52,265 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 311 out of 700 [2022-11-25 16:59:52,267 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 96 transitions, 349 flow. Second operand has 4 states, 4 states have (on average 312.0) internal successors, (1248), 4 states have internal predecessors, (1248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:59:52,267 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 16:59:52,267 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 311 of 700 [2022-11-25 16:59:52,267 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 16:59:57,686 INFO L130 PetriNetUnfolder]: 30466/41785 cut-off events. [2022-11-25 16:59:57,686 INFO L131 PetriNetUnfolder]: For 207/207 co-relation queries the response was YES. [2022-11-25 16:59:57,732 INFO L83 FinitePrefix]: Finished finitePrefix Result has 84192 conditions, 41785 events. 30466/41785 cut-off events. For 207/207 co-relation queries the response was YES. Maximal size of possible extension queue 1959. Compared 247952 event pairs, 23247 based on Foata normal form. 0/15956 useless extension candidates. Maximal degree in co-relation 84178. Up to 41737 conditions per place. [2022-11-25 16:59:57,830 INFO L137 encePairwiseOnDemand]: 697/700 looper letters, 90 selfloop transitions, 1 changer transitions 0/92 dead transitions. [2022-11-25 16:59:57,830 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 92 transitions, 511 flow [2022-11-25 16:59:57,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 16:59:57,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-25 16:59:57,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1004 transitions. [2022-11-25 16:59:57,834 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4780952380952381 [2022-11-25 16:59:57,835 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1004 transitions. [2022-11-25 16:59:57,835 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1004 transitions. [2022-11-25 16:59:57,836 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 16:59:57,836 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1004 transitions. [2022-11-25 16:59:57,838 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 334.6666666666667) internal successors, (1004), 3 states have internal predecessors, (1004), 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) [2022-11-25 16:59:57,842 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 700.0) internal successors, (2800), 4 states have internal predecessors, (2800), 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) [2022-11-25 16:59:57,844 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 700.0) internal successors, (2800), 4 states have internal predecessors, (2800), 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) [2022-11-25 16:59:57,844 INFO L175 Difference]: Start difference. First operand has 78 places, 96 transitions, 349 flow. Second operand 3 states and 1004 transitions. [2022-11-25 16:59:57,844 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 92 transitions, 511 flow [2022-11-25 16:59:57,846 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 92 transitions, 510 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-25 16:59:57,848 INFO L231 Difference]: Finished difference. Result has 77 places, 92 transitions, 330 flow [2022-11-25 16:59:57,848 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=700, PETRI_DIFFERENCE_MINUEND_FLOW=328, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=92, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=91, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=330, PETRI_PLACES=77, PETRI_TRANSITIONS=92} [2022-11-25 16:59:57,849 INFO L288 CegarLoopForPetriNet]: 81 programPoint places, -4 predicate places. [2022-11-25 16:59:57,849 INFO L495 AbstractCegarLoop]: Abstraction has has 77 places, 92 transitions, 330 flow [2022-11-25 16:59:57,850 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 312.0) internal successors, (1248), 4 states have internal predecessors, (1248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:59:57,850 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 16:59:57,850 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2022-11-25 16:59:57,868 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a9dbe0a-ddae-46ea-865d-b1df14e3d9b3/bin/uautomizer-ZsLfNo2U6R/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 [2022-11-25 16:59:58,062 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a9dbe0a-ddae-46ea-865d-b1df14e3d9b3/bin/uautomizer-ZsLfNo2U6R/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 [2022-11-25 16:59:58,062 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 68 more)] === [2022-11-25 16:59:58,063 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 16:59:58,063 INFO L85 PathProgramCache]: Analyzing trace with hash -53165811, now seen corresponding path program 1 times [2022-11-25 16:59:58,063 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-25 16:59:58,063 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [78601771] [2022-11-25 16:59:58,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 16:59:58,063 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 [2022-11-25 16:59:58,064 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a9dbe0a-ddae-46ea-865d-b1df14e3d9b3/bin/uautomizer-ZsLfNo2U6R/mathsat [2022-11-25 16:59:58,065 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a9dbe0a-ddae-46ea-865d-b1df14e3d9b3/bin/uautomizer-ZsLfNo2U6R/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) [2022-11-25 16:59:58,070 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a9dbe0a-ddae-46ea-865d-b1df14e3d9b3/bin/uautomizer-ZsLfNo2U6R/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 [2022-11-25 16:59:58,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:59:58,176 INFO L263 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-25 16:59:58,179 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 16:59:58,201 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 16:59:58,281 INFO L321 Elim1Store]: treesize reduction 79, result has 27.5 percent of original size [2022-11-25 16:59:58,281 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 4 case distinctions, treesize of input 29 treesize of output 48 [2022-11-25 16:59:58,522 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 16:59:58,546 INFO L321 Elim1Store]: treesize reduction 23, result has 32.4 percent of original size [2022-11-25 16:59:58,547 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 21 treesize of output 36 [2022-11-25 16:59:58,782 INFO L321 Elim1Store]: treesize reduction 42, result has 26.3 percent of original size [2022-11-25 16:59:58,782 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 21 treesize of output 32 [2022-11-25 16:59:58,956 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 16:59:58,957 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 16:59:58,957 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-25 16:59:58,957 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [78601771] [2022-11-25 16:59:58,957 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [78601771] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 16:59:58,957 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 16:59:58,958 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-25 16:59:58,958 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [896099547] [2022-11-25 16:59:58,958 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 16:59:58,958 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-25 16:59:58,958 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-25 16:59:58,959 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-25 16:59:58,959 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-25 16:59:59,969 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 311 out of 700 [2022-11-25 16:59:59,970 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 92 transitions, 330 flow. Second operand has 4 states, 4 states have (on average 312.5) internal successors, (1250), 4 states have internal predecessors, (1250), 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) [2022-11-25 16:59:59,970 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 16:59:59,970 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 311 of 700 [2022-11-25 16:59:59,970 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand