./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/weaver/popl20-commit-1.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_3fb60592-ef88-48e4-98ea-3b55ef6f1ffb/bin/uautomizer-ZsLfNo2U6R/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fb60592-ef88-48e4-98ea-3b55ef6f1ffb/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_3fb60592-ef88-48e4-98ea-3b55ef6f1ffb/bin/uautomizer-ZsLfNo2U6R/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fb60592-ef88-48e4-98ea-3b55ef6f1ffb/bin/uautomizer-ZsLfNo2U6R/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/weaver/popl20-commit-1.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fb60592-ef88-48e4-98ea-3b55ef6f1ffb/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_3fb60592-ef88-48e4-98ea-3b55ef6f1ffb/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 4b2db95108d1ec3739bf941ab9d238fd5c3dd7467faa747c6c0552ae2048ee95 --- 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 18:07:59,435 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-25 18:07:59,437 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-25 18:07:59,457 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-25 18:07:59,471 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-25 18:07:59,473 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-25 18:07:59,476 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-25 18:07:59,482 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-25 18:07:59,484 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-25 18:07:59,486 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-25 18:07:59,488 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-25 18:07:59,490 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-25 18:07:59,491 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-25 18:07:59,495 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-25 18:07:59,500 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-25 18:07:59,501 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-25 18:07:59,504 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-25 18:07:59,511 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-25 18:07:59,513 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-25 18:07:59,514 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-25 18:07:59,516 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-25 18:07:59,520 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-25 18:07:59,521 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-25 18:07:59,524 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-25 18:07:59,528 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-25 18:07:59,535 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-25 18:07:59,535 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-25 18:07:59,536 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-25 18:07:59,537 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-25 18:07:59,539 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-25 18:07:59,541 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-25 18:07:59,542 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-25 18:07:59,543 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-25 18:07:59,545 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-25 18:07:59,546 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-25 18:07:59,546 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-25 18:07:59,547 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-25 18:07:59,547 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-25 18:07:59,548 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-25 18:07:59,549 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-25 18:07:59,549 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-25 18:07:59,550 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fb60592-ef88-48e4-98ea-3b55ef6f1ffb/bin/uautomizer-ZsLfNo2U6R/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2022-11-25 18:07:59,592 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-25 18:07:59,592 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-25 18:07:59,593 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-25 18:07:59,593 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-25 18:07:59,594 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-25 18:07:59,594 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-25 18:07:59,594 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-25 18:07:59,595 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-25 18:07:59,595 INFO L138 SettingsManager]: * Use SBE=true [2022-11-25 18:07:59,595 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-25 18:07:59,596 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-25 18:07:59,597 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-25 18:07:59,597 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-25 18:07:59,597 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-25 18:07:59,597 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-25 18:07:59,597 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-11-25 18:07:59,598 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-11-25 18:07:59,598 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-11-25 18:07:59,598 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-25 18:07:59,598 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-25 18:07:59,598 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-25 18:07:59,599 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-25 18:07:59,599 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-25 18:07:59,599 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-25 18:07:59,599 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-25 18:07:59,599 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 18:07:59,600 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-25 18:07:59,600 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-25 18:07:59,601 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-25 18:07:59,601 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-25 18:07:59,601 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-25 18:07:59,601 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-11-25 18:07:59,602 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-25 18:07:59,602 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_3fb60592-ef88-48e4-98ea-3b55ef6f1ffb/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fb60592-ef88-48e4-98ea-3b55ef6f1ffb/bin/uautomizer-ZsLfNo2U6R Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4b2db95108d1ec3739bf941ab9d238fd5c3dd7467faa747c6c0552ae2048ee95 [2022-11-25 18:07:59,909 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-25 18:07:59,944 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-25 18:07:59,947 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-25 18:07:59,948 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-25 18:07:59,949 INFO L275 PluginConnector]: CDTParser initialized [2022-11-25 18:07:59,950 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fb60592-ef88-48e4-98ea-3b55ef6f1ffb/bin/uautomizer-ZsLfNo2U6R/../../sv-benchmarks/c/weaver/popl20-commit-1.wvr.c [2022-11-25 18:08:03,112 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-25 18:08:03,334 INFO L351 CDTParser]: Found 1 translation units. [2022-11-25 18:08:03,335 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fb60592-ef88-48e4-98ea-3b55ef6f1ffb/sv-benchmarks/c/weaver/popl20-commit-1.wvr.c [2022-11-25 18:08:03,342 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fb60592-ef88-48e4-98ea-3b55ef6f1ffb/bin/uautomizer-ZsLfNo2U6R/data/c73177905/127a248643bc4efb8e2b7642b4ad457d/FLAGa36d28120 [2022-11-25 18:08:03,359 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fb60592-ef88-48e4-98ea-3b55ef6f1ffb/bin/uautomizer-ZsLfNo2U6R/data/c73177905/127a248643bc4efb8e2b7642b4ad457d [2022-11-25 18:08:03,362 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-25 18:08:03,364 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-25 18:08:03,365 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-25 18:08:03,365 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-25 18:08:03,369 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-25 18:08:03,370 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 06:08:03" (1/1) ... [2022-11-25 18:08:03,371 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@138d8241 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:08:03, skipping insertion in model container [2022-11-25 18:08:03,372 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 06:08:03" (1/1) ... [2022-11-25 18:08:03,380 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-25 18:08:03,410 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-25 18:08:03,556 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 18:08:03,561 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 18:08:03,561 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 18:08:03,563 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 18:08:03,563 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 18:08:03,565 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 18:08:03,566 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 18:08:03,567 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 18:08:03,571 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 18:08:03,580 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 18:08:03,580 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 18:08:03,584 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 18:08:03,586 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 18:08:03,592 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 18:08:03,592 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 18:08:03,594 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 18:08:03,604 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_3fb60592-ef88-48e4-98ea-3b55ef6f1ffb/sv-benchmarks/c/weaver/popl20-commit-1.wvr.c[4604,4617] [2022-11-25 18:08:03,614 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 18:08:03,626 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 18:08:03,627 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@6ea5c764 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:08:03, skipping insertion in model container [2022-11-25 18:08:03,627 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-25 18:08:03,628 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2022-11-25 18:08:03,637 INFO L158 Benchmark]: Toolchain (without parser) took 272.53ms. Allocated memory is still 195.0MB. Free memory was 148.5MB in the beginning and 136.8MB in the end (delta: 11.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2022-11-25 18:08:03,638 INFO L158 Benchmark]: CDTParser took 0.30ms. Allocated memory is still 146.8MB. Free memory was 87.4MB in the beginning and 87.3MB in the end (delta: 157.4kB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-25 18:08:03,639 INFO L158 Benchmark]: CACSL2BoogieTranslator took 262.66ms. Allocated memory is still 195.0MB. Free memory was 148.5MB in the beginning and 136.8MB in the end (delta: 11.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2022-11-25 18:08:03,640 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.30ms. Allocated memory is still 146.8MB. Free memory was 87.4MB in the beginning and 87.3MB in the end (delta: 157.4kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 262.66ms. Allocated memory is still 195.0MB. Free memory was 148.5MB in the beginning and 136.8MB in the end (delta: 11.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 157]: 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_3fb60592-ef88-48e4-98ea-3b55ef6f1ffb/bin/uautomizer-ZsLfNo2U6R/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fb60592-ef88-48e4-98ea-3b55ef6f1ffb/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_3fb60592-ef88-48e4-98ea-3b55ef6f1ffb/bin/uautomizer-ZsLfNo2U6R/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fb60592-ef88-48e4-98ea-3b55ef6f1ffb/bin/uautomizer-ZsLfNo2U6R/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/weaver/popl20-commit-1.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fb60592-ef88-48e4-98ea-3b55ef6f1ffb/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_3fb60592-ef88-48e4-98ea-3b55ef6f1ffb/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 4b2db95108d1ec3739bf941ab9d238fd5c3dd7467faa747c6c0552ae2048ee95 --- 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 18:08:05,941 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-25 18:08:05,944 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-25 18:08:05,972 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-25 18:08:05,975 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-25 18:08:05,977 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-25 18:08:05,979 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-25 18:08:05,982 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-25 18:08:05,987 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-25 18:08:05,991 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-25 18:08:05,993 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-25 18:08:05,997 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-25 18:08:05,997 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-25 18:08:06,003 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-25 18:08:06,005 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-25 18:08:06,007 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-25 18:08:06,009 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-25 18:08:06,011 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-25 18:08:06,016 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-25 18:08:06,020 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-25 18:08:06,025 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-25 18:08:06,030 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-25 18:08:06,033 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-25 18:08:06,034 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-25 18:08:06,037 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-25 18:08:06,042 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-25 18:08:06,043 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-25 18:08:06,044 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-25 18:08:06,046 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-25 18:08:06,047 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-25 18:08:06,048 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-25 18:08:06,049 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-25 18:08:06,050 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-25 18:08:06,060 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-25 18:08:06,062 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-25 18:08:06,063 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-25 18:08:06,064 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-25 18:08:06,064 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-25 18:08:06,065 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-25 18:08:06,066 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-25 18:08:06,067 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-25 18:08:06,068 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fb60592-ef88-48e4-98ea-3b55ef6f1ffb/bin/uautomizer-ZsLfNo2U6R/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2022-11-25 18:08:06,112 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-25 18:08:06,113 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-25 18:08:06,114 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-25 18:08:06,115 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-25 18:08:06,116 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-25 18:08:06,116 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-25 18:08:06,117 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-25 18:08:06,118 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-25 18:08:06,118 INFO L138 SettingsManager]: * Use SBE=true [2022-11-25 18:08:06,118 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-25 18:08:06,119 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-25 18:08:06,120 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-25 18:08:06,120 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-25 18:08:06,120 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-25 18:08:06,121 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-25 18:08:06,121 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-11-25 18:08:06,121 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-11-25 18:08:06,122 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-11-25 18:08:06,122 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-25 18:08:06,122 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-25 18:08:06,123 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-11-25 18:08:06,123 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-11-25 18:08:06,123 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-25 18:08:06,123 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-25 18:08:06,124 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-25 18:08:06,124 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-25 18:08:06,125 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-25 18:08:06,125 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 18:08:06,125 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-25 18:08:06,126 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-25 18:08:06,126 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-11-25 18:08:06,126 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-11-25 18:08:06,127 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-25 18:08:06,127 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-11-25 18:08:06,127 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-25 18:08:06,128 INFO L138 SettingsManager]: * Logic for external solver=AUFBV [2022-11-25 18:08:06,128 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_3fb60592-ef88-48e4-98ea-3b55ef6f1ffb/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fb60592-ef88-48e4-98ea-3b55ef6f1ffb/bin/uautomizer-ZsLfNo2U6R Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4b2db95108d1ec3739bf941ab9d238fd5c3dd7467faa747c6c0552ae2048ee95 [2022-11-25 18:08:06,577 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-25 18:08:06,611 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-25 18:08:06,614 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-25 18:08:06,615 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-25 18:08:06,616 INFO L275 PluginConnector]: CDTParser initialized [2022-11-25 18:08:06,618 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fb60592-ef88-48e4-98ea-3b55ef6f1ffb/bin/uautomizer-ZsLfNo2U6R/../../sv-benchmarks/c/weaver/popl20-commit-1.wvr.c [2022-11-25 18:08:10,005 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-25 18:08:10,262 INFO L351 CDTParser]: Found 1 translation units. [2022-11-25 18:08:10,262 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fb60592-ef88-48e4-98ea-3b55ef6f1ffb/sv-benchmarks/c/weaver/popl20-commit-1.wvr.c [2022-11-25 18:08:10,272 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fb60592-ef88-48e4-98ea-3b55ef6f1ffb/bin/uautomizer-ZsLfNo2U6R/data/eab9b0103/54f5b6d861f440ce93f7c196385214f2/FLAGa6e7dbb23 [2022-11-25 18:08:10,291 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fb60592-ef88-48e4-98ea-3b55ef6f1ffb/bin/uautomizer-ZsLfNo2U6R/data/eab9b0103/54f5b6d861f440ce93f7c196385214f2 [2022-11-25 18:08:10,294 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-25 18:08:10,295 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-25 18:08:10,297 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-25 18:08:10,297 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-25 18:08:10,305 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-25 18:08:10,306 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 06:08:10" (1/1) ... [2022-11-25 18:08:10,307 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@56c821fc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:08:10, skipping insertion in model container [2022-11-25 18:08:10,307 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 06:08:10" (1/1) ... [2022-11-25 18:08:10,315 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-25 18:08:10,351 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-25 18:08:10,519 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 18:08:10,525 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 18:08:10,525 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 18:08:10,527 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 18:08:10,527 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 18:08:10,530 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 18:08:10,530 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 18:08:10,532 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 18:08:10,535 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 18:08:10,538 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 18:08:10,538 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 18:08:10,540 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 18:08:10,541 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 18:08:10,543 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 18:08:10,543 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 18:08:10,545 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 18:08:10,554 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_3fb60592-ef88-48e4-98ea-3b55ef6f1ffb/sv-benchmarks/c/weaver/popl20-commit-1.wvr.c[4604,4617] [2022-11-25 18:08:10,566 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 18:08:10,581 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2022-11-25 18:08:10,585 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-25 18:08:10,591 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 18:08:10,593 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 18:08:10,594 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 18:08:10,595 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 18:08:10,596 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 18:08:10,598 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 18:08:10,598 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 18:08:10,600 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 18:08:10,601 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 18:08:10,603 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 18:08:10,603 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 18:08:10,605 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 18:08:10,606 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 18:08:10,607 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 18:08:10,608 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 18:08:10,609 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 18:08:10,615 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_3fb60592-ef88-48e4-98ea-3b55ef6f1ffb/sv-benchmarks/c/weaver/popl20-commit-1.wvr.c[4604,4617] [2022-11-25 18:08:10,619 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 18:08:10,626 INFO L203 MainTranslator]: Completed pre-run [2022-11-25 18:08:10,640 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 18:08:10,642 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 18:08:10,642 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 18:08:10,643 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 18:08:10,644 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 18:08:10,645 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 18:08:10,646 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 18:08:10,647 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 18:08:10,648 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 18:08:10,650 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 18:08:10,650 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 18:08:10,651 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 18:08:10,652 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 18:08:10,654 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 18:08:10,654 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 18:08:10,656 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 18:08:10,660 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_3fb60592-ef88-48e4-98ea-3b55ef6f1ffb/sv-benchmarks/c/weaver/popl20-commit-1.wvr.c[4604,4617] [2022-11-25 18:08:10,664 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 18:08:10,681 INFO L208 MainTranslator]: Completed translation [2022-11-25 18:08:10,682 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:08:10 WrapperNode [2022-11-25 18:08:10,682 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-25 18:08:10,683 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-25 18:08:10,684 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-25 18:08:10,684 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-25 18:08:10,691 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:08:10" (1/1) ... [2022-11-25 18:08:10,704 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:08:10" (1/1) ... [2022-11-25 18:08:10,738 INFO L138 Inliner]: procedures = 27, calls = 68, calls flagged for inlining = 20, calls inlined = 24, statements flattened = 322 [2022-11-25 18:08:10,739 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-25 18:08:10,739 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-25 18:08:10,739 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-25 18:08:10,739 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-25 18:08:10,758 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:08:10" (1/1) ... [2022-11-25 18:08:10,759 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:08:10" (1/1) ... [2022-11-25 18:08:10,765 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:08:10" (1/1) ... [2022-11-25 18:08:10,766 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:08:10" (1/1) ... [2022-11-25 18:08:10,777 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:08:10" (1/1) ... [2022-11-25 18:08:10,783 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:08:10" (1/1) ... [2022-11-25 18:08:10,785 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:08:10" (1/1) ... [2022-11-25 18:08:10,808 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:08:10" (1/1) ... [2022-11-25 18:08:10,812 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-25 18:08:10,813 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-25 18:08:10,813 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-25 18:08:10,813 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-25 18:08:10,814 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:08:10" (1/1) ... [2022-11-25 18:08:10,823 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 18:08:10,840 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fb60592-ef88-48e4-98ea-3b55ef6f1ffb/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 18:08:10,855 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fb60592-ef88-48e4-98ea-3b55ef6f1ffb/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-25 18:08:10,867 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fb60592-ef88-48e4-98ea-3b55ef6f1ffb/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-25 18:08:10,910 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-25 18:08:10,910 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-11-25 18:08:10,911 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-25 18:08:10,911 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2022-11-25 18:08:10,911 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-11-25 18:08:10,911 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-11-25 18:08:10,912 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-11-25 18:08:10,912 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-11-25 18:08:10,912 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-11-25 18:08:10,912 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-11-25 18:08:10,913 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-11-25 18:08:10,913 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-11-25 18:08:10,913 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-25 18:08:10,913 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-25 18:08:10,913 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-25 18:08:10,913 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-25 18:08:10,913 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2022-11-25 18:08:10,915 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 18:08:11,077 INFO L235 CfgBuilder]: Building ICFG [2022-11-25 18:08:11,094 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-25 18:08:12,084 INFO L276 CfgBuilder]: Performing block encoding [2022-11-25 18:08:12,431 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-25 18:08:12,431 INFO L300 CfgBuilder]: Removed 6 assume(true) statements. [2022-11-25 18:08:12,435 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 06:08:12 BoogieIcfgContainer [2022-11-25 18:08:12,435 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-25 18:08:12,439 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-25 18:08:12,440 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-25 18:08:12,444 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-25 18:08:12,444 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 06:08:10" (1/3) ... [2022-11-25 18:08:12,446 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2fd54eac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 06:08:12, skipping insertion in model container [2022-11-25 18:08:12,447 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:08:10" (2/3) ... [2022-11-25 18:08:12,448 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2fd54eac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 06:08:12, skipping insertion in model container [2022-11-25 18:08:12,449 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 06:08:12" (3/3) ... [2022-11-25 18:08:12,450 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-commit-1.wvr.c [2022-11-25 18:08:12,470 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-25 18:08:12,470 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 36 error locations. [2022-11-25 18:08:12,470 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-25 18:08:12,630 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-11-25 18:08:12,686 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 272 places, 281 transitions, 586 flow [2022-11-25 18:08:12,868 INFO L130 PetriNetUnfolder]: 19/278 cut-off events. [2022-11-25 18:08:12,869 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-11-25 18:08:12,876 INFO L83 FinitePrefix]: Finished finitePrefix Result has 291 conditions, 278 events. 19/278 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 258 event pairs, 0 based on Foata normal form. 0/223 useless extension candidates. Maximal degree in co-relation 228. Up to 2 conditions per place. [2022-11-25 18:08:12,877 INFO L82 GeneralOperation]: Start removeDead. Operand has 272 places, 281 transitions, 586 flow [2022-11-25 18:08:12,890 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 264 places, 273 transitions, 564 flow [2022-11-25 18:08:12,896 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-25 18:08:12,912 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 264 places, 273 transitions, 564 flow [2022-11-25 18:08:12,914 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 264 places, 273 transitions, 564 flow [2022-11-25 18:08:12,915 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 264 places, 273 transitions, 564 flow [2022-11-25 18:08:12,965 INFO L130 PetriNetUnfolder]: 19/273 cut-off events. [2022-11-25 18:08:12,965 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-11-25 18:08:12,966 INFO L83 FinitePrefix]: Finished finitePrefix Result has 286 conditions, 273 events. 19/273 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 257 event pairs, 0 based on Foata normal form. 0/219 useless extension candidates. Maximal degree in co-relation 228. Up to 2 conditions per place. [2022-11-25 18:08:12,968 INFO L119 LiptonReduction]: Number of co-enabled transitions 2982 [2022-11-25 18:09:27,669 INFO L134 LiptonReduction]: Checked pairs total: 9278 [2022-11-25 18:09:27,670 INFO L136 LiptonReduction]: Total number of compositions: 301 [2022-11-25 18:09:27,687 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-25 18:09:27,694 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;@1d7d211a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-25 18:09:27,694 INFO L358 AbstractCegarLoop]: Starting to check reachability of 55 error locations. [2022-11-25 18:09:27,697 INFO L130 PetriNetUnfolder]: 1/2 cut-off events. [2022-11-25 18:09:27,697 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-25 18:09:27,698 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 18:09:27,699 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1] [2022-11-25 18:09:27,699 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 52 more)] === [2022-11-25 18:09:27,704 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:09:27,705 INFO L85 PathProgramCache]: Analyzing trace with hash 45156, now seen corresponding path program 1 times [2022-11-25 18:09:27,721 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-25 18:09:27,722 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [923137574] [2022-11-25 18:09:27,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:09:27,722 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 18:09:27,723 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fb60592-ef88-48e4-98ea-3b55ef6f1ffb/bin/uautomizer-ZsLfNo2U6R/mathsat [2022-11-25 18:09:27,735 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fb60592-ef88-48e4-98ea-3b55ef6f1ffb/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 18:09:27,756 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fb60592-ef88-48e4-98ea-3b55ef6f1ffb/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 18:09:27,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:09:27,912 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-25 18:09:27,917 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 18:09:28,216 INFO L321 Elim1Store]: treesize reduction 78, result has 32.2 percent of original size [2022-11-25 18:09:28,217 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 18:09:28,288 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 18:09:28,289 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 18:09:28,290 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-25 18:09:28,290 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [923137574] [2022-11-25 18:09:28,290 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [923137574] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:09:28,291 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 18:09:28,291 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-25 18:09:28,292 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1088714947] [2022-11-25 18:09:28,293 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:09:28,302 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 18:09:28,302 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-25 18:09:28,376 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 18:09:28,378 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 18:09:28,846 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 222 out of 582 [2022-11-25 18:09:28,850 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 65 transitions, 148 flow. Second operand has 3 states, 3 states have (on average 222.66666666666666) internal successors, (668), 3 states have internal predecessors, (668), 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 18:09:28,850 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 18:09:28,850 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 222 of 582 [2022-11-25 18:09:28,851 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 18:09:34,538 INFO L130 PetriNetUnfolder]: 16421/22822 cut-off events. [2022-11-25 18:09:34,538 INFO L131 PetriNetUnfolder]: For 320/320 co-relation queries the response was YES. [2022-11-25 18:09:34,579 INFO L83 FinitePrefix]: Finished finitePrefix Result has 46183 conditions, 22822 events. 16421/22822 cut-off events. For 320/320 co-relation queries the response was YES. Maximal size of possible extension queue 1725. Compared 133874 event pairs, 14280 based on Foata normal form. 0/7111 useless extension candidates. Maximal degree in co-relation 21710. Up to 11414 conditions per place. [2022-11-25 18:09:34,717 INFO L137 encePairwiseOnDemand]: 572/582 looper letters, 118 selfloop transitions, 6 changer transitions 0/124 dead transitions. [2022-11-25 18:09:34,718 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 124 transitions, 532 flow [2022-11-25 18:09:34,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 18:09:34,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-25 18:09:34,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 795 transitions. [2022-11-25 18:09:34,736 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.45532646048109965 [2022-11-25 18:09:34,737 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 795 transitions. [2022-11-25 18:09:34,738 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 795 transitions. [2022-11-25 18:09:34,740 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 18:09:34,743 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 795 transitions. [2022-11-25 18:09:34,751 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 265.0) internal successors, (795), 3 states have internal predecessors, (795), 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 18:09:34,762 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 582.0) internal successors, (2328), 4 states have internal predecessors, (2328), 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 18:09:34,763 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 582.0) internal successors, (2328), 4 states have internal predecessors, (2328), 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 18:09:34,765 INFO L175 Difference]: Start difference. First operand has 69 places, 65 transitions, 148 flow. Second operand 3 states and 795 transitions. [2022-11-25 18:09:34,767 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 124 transitions, 532 flow [2022-11-25 18:09:34,788 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 124 transitions, 508 flow, removed 0 selfloop flow, removed 6 redundant places. [2022-11-25 18:09:34,792 INFO L231 Difference]: Finished difference. Result has 66 places, 69 transitions, 184 flow [2022-11-25 18:09:34,794 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=582, PETRI_DIFFERENCE_MINUEND_FLOW=134, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=184, PETRI_PLACES=66, PETRI_TRANSITIONS=69} [2022-11-25 18:09:34,798 INFO L288 CegarLoopForPetriNet]: 69 programPoint places, -3 predicate places. [2022-11-25 18:09:34,799 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 69 transitions, 184 flow [2022-11-25 18:09:34,799 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 222.66666666666666) internal successors, (668), 3 states have internal predecessors, (668), 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 18:09:34,800 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 18:09:34,800 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1] [2022-11-25 18:09:34,812 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fb60592-ef88-48e4-98ea-3b55ef6f1ffb/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)] Ended with exit code 0 [2022-11-25 18:09:35,012 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fb60592-ef88-48e4-98ea-3b55ef6f1ffb/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 18:09:35,012 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 52 more)] === [2022-11-25 18:09:35,013 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:09:35,013 INFO L85 PathProgramCache]: Analyzing trace with hash 45155, now seen corresponding path program 1 times [2022-11-25 18:09:35,013 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-25 18:09:35,014 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [798625512] [2022-11-25 18:09:35,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:09:35,014 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 18:09:35,014 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fb60592-ef88-48e4-98ea-3b55ef6f1ffb/bin/uautomizer-ZsLfNo2U6R/mathsat [2022-11-25 18:09:35,025 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fb60592-ef88-48e4-98ea-3b55ef6f1ffb/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 18:09:35,063 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fb60592-ef88-48e4-98ea-3b55ef6f1ffb/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 18:09:35,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:09:35,140 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-25 18:09:35,142 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 18:09:35,239 INFO L321 Elim1Store]: treesize reduction 84, result has 33.9 percent of original size [2022-11-25 18:09:35,239 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 18:09:35,256 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 18:09:35,256 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 18:09:35,257 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-25 18:09:35,257 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [798625512] [2022-11-25 18:09:35,257 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [798625512] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:09:35,258 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 18:09:35,258 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-25 18:09:35,258 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [299453723] [2022-11-25 18:09:35,258 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:09:35,260 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 18:09:35,260 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-25 18:09:35,261 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 18:09:35,261 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 18:09:35,437 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 222 out of 582 [2022-11-25 18:09:35,440 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 69 transitions, 184 flow. Second operand has 3 states, 3 states have (on average 222.66666666666666) internal successors, (668), 3 states have internal predecessors, (668), 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 18:09:35,441 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 18:09:35,442 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 222 of 582 [2022-11-25 18:09:35,442 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 18:09:39,403 INFO L130 PetriNetUnfolder]: 16421/22816 cut-off events. [2022-11-25 18:09:39,403 INFO L131 PetriNetUnfolder]: For 84/84 co-relation queries the response was YES. [2022-11-25 18:09:39,433 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45866 conditions, 22816 events. 16421/22816 cut-off events. For 84/84 co-relation queries the response was YES. Maximal size of possible extension queue 2008. Compared 135236 event pairs, 14280 based on Foata normal form. 4/7121 useless extension candidates. Maximal degree in co-relation 22913. Up to 22816 conditions per place. [2022-11-25 18:09:39,560 INFO L137 encePairwiseOnDemand]: 578/582 looper letters, 65 selfloop transitions, 1 changer transitions 0/66 dead transitions. [2022-11-25 18:09:39,560 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 66 transitions, 310 flow [2022-11-25 18:09:39,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 18:09:39,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-25 18:09:39,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 730 transitions. [2022-11-25 18:09:39,564 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.41809851088201605 [2022-11-25 18:09:39,564 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 730 transitions. [2022-11-25 18:09:39,565 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 730 transitions. [2022-11-25 18:09:39,565 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 18:09:39,566 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 730 transitions. [2022-11-25 18:09:39,568 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 243.33333333333334) internal successors, (730), 3 states have internal predecessors, (730), 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 18:09:39,573 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 582.0) internal successors, (2328), 4 states have internal predecessors, (2328), 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 18:09:39,575 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 582.0) internal successors, (2328), 4 states have internal predecessors, (2328), 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 18:09:39,576 INFO L175 Difference]: Start difference. First operand has 66 places, 69 transitions, 184 flow. Second operand 3 states and 730 transitions. [2022-11-25 18:09:39,576 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 66 transitions, 310 flow [2022-11-25 18:09:39,577 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 66 transitions, 298 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-25 18:09:39,579 INFO L231 Difference]: Finished difference. Result has 63 places, 66 transitions, 168 flow [2022-11-25 18:09:39,580 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=582, PETRI_DIFFERENCE_MINUEND_FLOW=166, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=168, PETRI_PLACES=63, PETRI_TRANSITIONS=66} [2022-11-25 18:09:39,581 INFO L288 CegarLoopForPetriNet]: 69 programPoint places, -6 predicate places. [2022-11-25 18:09:39,581 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 66 transitions, 168 flow [2022-11-25 18:09:39,582 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 222.66666666666666) internal successors, (668), 3 states have internal predecessors, (668), 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 18:09:39,582 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 18:09:39,582 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2022-11-25 18:09:39,606 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fb60592-ef88-48e4-98ea-3b55ef6f1ffb/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 18:09:39,795 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fb60592-ef88-48e4-98ea-3b55ef6f1ffb/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 18:09:39,795 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 52 more)] === [2022-11-25 18:09:39,799 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:09:39,801 INFO L85 PathProgramCache]: Analyzing trace with hash 1405095, now seen corresponding path program 1 times [2022-11-25 18:09:39,801 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-25 18:09:39,802 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [629699346] [2022-11-25 18:09:39,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:09:39,807 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 18:09:39,808 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fb60592-ef88-48e4-98ea-3b55ef6f1ffb/bin/uautomizer-ZsLfNo2U6R/mathsat [2022-11-25 18:09:39,810 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fb60592-ef88-48e4-98ea-3b55ef6f1ffb/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 18:09:39,871 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fb60592-ef88-48e4-98ea-3b55ef6f1ffb/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 18:09:39,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:09:39,950 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-25 18:09:39,953 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 18:09:40,119 INFO L321 Elim1Store]: treesize reduction 78, result has 32.2 percent of original size [2022-11-25 18:09:40,120 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 18:09:40,223 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 18:09:40,223 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 18:09:40,487 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 18:09:40,487 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-25 18:09:40,487 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [629699346] [2022-11-25 18:09:40,488 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [629699346] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 18:09:40,488 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-25 18:09:40,488 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2] total 4 [2022-11-25 18:09:40,488 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1399963979] [2022-11-25 18:09:40,488 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-25 18:09:40,489 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-25 18:09:40,489 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-25 18:09:40,489 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-25 18:09:40,489 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-11-25 18:09:42,095 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 207 out of 582 [2022-11-25 18:09:42,098 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 66 transitions, 168 flow. Second operand has 6 states, 6 states have (on average 208.0) internal successors, (1248), 6 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 18:09:42,098 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 18:09:42,098 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 207 of 582 [2022-11-25 18:09:42,098 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 18:09:49,826 INFO L130 PetriNetUnfolder]: 24641/34238 cut-off events. [2022-11-25 18:09:49,826 INFO L131 PetriNetUnfolder]: For 126/126 co-relation queries the response was YES. [2022-11-25 18:09:49,866 INFO L83 FinitePrefix]: Finished finitePrefix Result has 68825 conditions, 34238 events. 24641/34238 cut-off events. For 126/126 co-relation queries the response was YES. Maximal size of possible extension queue 2669. Compared 211705 event pairs, 21420 based on Foata normal form. 0/10677 useless extension candidates. Maximal degree in co-relation 68817. Up to 11412 conditions per place. [2022-11-25 18:09:50,006 INFO L137 encePairwiseOnDemand]: 570/582 looper letters, 164 selfloop transitions, 27 changer transitions 0/191 dead transitions. [2022-11-25 18:09:50,007 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 191 transitions, 842 flow [2022-11-25 18:09:50,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-25 18:09:50,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-25 18:09:50,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1442 transitions. [2022-11-25 18:09:50,011 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4129438717067583 [2022-11-25 18:09:50,012 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1442 transitions. [2022-11-25 18:09:50,012 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1442 transitions. [2022-11-25 18:09:50,013 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 18:09:50,013 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1442 transitions. [2022-11-25 18:09:50,016 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 240.33333333333334) internal successors, (1442), 6 states have internal predecessors, (1442), 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 18:09:50,023 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 582.0) internal successors, (4074), 7 states have internal predecessors, (4074), 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 18:09:50,025 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 582.0) internal successors, (4074), 7 states have internal predecessors, (4074), 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 18:09:50,025 INFO L175 Difference]: Start difference. First operand has 63 places, 66 transitions, 168 flow. Second operand 6 states and 1442 transitions. [2022-11-25 18:09:50,026 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 191 transitions, 842 flow [2022-11-25 18:09:50,027 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 191 transitions, 841 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-25 18:09:50,030 INFO L231 Difference]: Finished difference. Result has 71 places, 87 transitions, 371 flow [2022-11-25 18:09:50,030 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=582, PETRI_DIFFERENCE_MINUEND_FLOW=167, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=371, PETRI_PLACES=71, PETRI_TRANSITIONS=87} [2022-11-25 18:09:50,031 INFO L288 CegarLoopForPetriNet]: 69 programPoint places, 2 predicate places. [2022-11-25 18:09:50,031 INFO L495 AbstractCegarLoop]: Abstraction has has 71 places, 87 transitions, 371 flow [2022-11-25 18:09:50,032 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 208.0) internal successors, (1248), 6 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 18:09:50,032 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 18:09:50,032 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2022-11-25 18:09:50,053 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fb60592-ef88-48e4-98ea-3b55ef6f1ffb/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 18:09:50,248 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fb60592-ef88-48e4-98ea-3b55ef6f1ffb/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 18:09:50,248 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 52 more)] === [2022-11-25 18:09:50,249 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:09:50,249 INFO L85 PathProgramCache]: Analyzing trace with hash 43619856, now seen corresponding path program 1 times [2022-11-25 18:09:50,249 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-25 18:09:50,249 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1940499691] [2022-11-25 18:09:50,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:09:50,250 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 18:09:50,250 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fb60592-ef88-48e4-98ea-3b55ef6f1ffb/bin/uautomizer-ZsLfNo2U6R/mathsat [2022-11-25 18:09:50,251 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fb60592-ef88-48e4-98ea-3b55ef6f1ffb/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 18:09:50,252 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fb60592-ef88-48e4-98ea-3b55ef6f1ffb/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 18:09:50,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:09:50,447 INFO L263 TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 14 conjunts are in the unsatisfiable core [2022-11-25 18:09:50,451 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 18:09:50,487 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 18:09:50,489 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 18:09:50,495 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 18:09:50,606 INFO L321 Elim1Store]: treesize reduction 33, result has 40.0 percent of original size [2022-11-25 18:09:50,606 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 15 treesize of output 32 [2022-11-25 18:09:50,658 INFO L321 Elim1Store]: treesize reduction 5, result has 50.0 percent of original size [2022-11-25 18:09:50,658 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 90 treesize of output 89 [2022-11-25 18:09:50,744 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 18:09:50,745 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 18:09:50,784 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 18:09:50,785 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 18:09:50,821 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 18:09:50,821 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 18:09:50,821 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-25 18:09:50,822 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1940499691] [2022-11-25 18:09:50,822 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1940499691] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:09:50,822 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 18:09:50,822 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-25 18:09:50,822 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2049845417] [2022-11-25 18:09:50,822 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:09:50,823 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-25 18:09:50,823 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-25 18:09:50,823 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-25 18:09:50,823 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-25 18:09:51,208 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 229 out of 582 [2022-11-25 18:09:51,210 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 87 transitions, 371 flow. Second operand has 4 states, 4 states have (on average 230.0) internal successors, (920), 4 states have internal predecessors, (920), 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 18:09:51,210 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 18:09:51,210 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 229 of 582 [2022-11-25 18:09:51,210 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 18:09:55,501 INFO L130 PetriNetUnfolder]: 18906/26589 cut-off events. [2022-11-25 18:09:55,501 INFO L131 PetriNetUnfolder]: For 134/134 co-relation queries the response was YES. [2022-11-25 18:09:55,546 INFO L83 FinitePrefix]: Finished finitePrefix Result has 53601 conditions, 26589 events. 18906/26589 cut-off events. For 134/134 co-relation queries the response was YES. Maximal size of possible extension queue 1955. Compared 163345 event pairs, 16380 based on Foata normal form. 0/9008 useless extension candidates. Maximal degree in co-relation 53588. Up to 26589 conditions per place. [2022-11-25 18:09:55,663 INFO L137 encePairwiseOnDemand]: 579/582 looper letters, 82 selfloop transitions, 1 changer transitions 0/83 dead transitions. [2022-11-25 18:09:55,664 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 83 transitions, 517 flow [2022-11-25 18:09:55,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 18:09:55,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-25 18:09:55,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 748 transitions. [2022-11-25 18:09:55,667 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4284077892325315 [2022-11-25 18:09:55,667 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 748 transitions. [2022-11-25 18:09:55,667 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 748 transitions. [2022-11-25 18:09:55,667 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 18:09:55,668 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 748 transitions. [2022-11-25 18:09:55,669 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 249.33333333333334) internal successors, (748), 3 states have internal predecessors, (748), 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 18:09:55,673 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 582.0) internal successors, (2328), 4 states have internal predecessors, (2328), 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 18:09:55,674 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 582.0) internal successors, (2328), 4 states have internal predecessors, (2328), 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 18:09:55,674 INFO L175 Difference]: Start difference. First operand has 71 places, 87 transitions, 371 flow. Second operand 3 states and 748 transitions. [2022-11-25 18:09:55,674 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 83 transitions, 517 flow [2022-11-25 18:09:55,676 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 83 transitions, 487 flow, removed 9 selfloop flow, removed 1 redundant places. [2022-11-25 18:09:55,678 INFO L231 Difference]: Finished difference. Result has 70 places, 83 transitions, 323 flow [2022-11-25 18:09:55,678 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=582, PETRI_DIFFERENCE_MINUEND_FLOW=321, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=323, PETRI_PLACES=70, PETRI_TRANSITIONS=83} [2022-11-25 18:09:55,679 INFO L288 CegarLoopForPetriNet]: 69 programPoint places, 1 predicate places. [2022-11-25 18:09:55,679 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 83 transitions, 323 flow [2022-11-25 18:09:55,680 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 230.0) internal successors, (920), 4 states have internal predecessors, (920), 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 18:09:55,680 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 18:09:55,680 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2022-11-25 18:09:55,700 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fb60592-ef88-48e4-98ea-3b55ef6f1ffb/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)] Forceful destruction successful, exit code 0 [2022-11-25 18:09:55,892 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fb60592-ef88-48e4-98ea-3b55ef6f1ffb/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 18:09:55,892 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 52 more)] === [2022-11-25 18:09:55,892 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:09:55,892 INFO L85 PathProgramCache]: Analyzing trace with hash 43619855, now seen corresponding path program 1 times [2022-11-25 18:09:55,893 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-25 18:09:55,893 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [620447457] [2022-11-25 18:09:55,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:09:55,893 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 18:09:55,894 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fb60592-ef88-48e4-98ea-3b55ef6f1ffb/bin/uautomizer-ZsLfNo2U6R/mathsat [2022-11-25 18:09:55,895 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fb60592-ef88-48e4-98ea-3b55ef6f1ffb/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 18:09:55,899 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fb60592-ef88-48e4-98ea-3b55ef6f1ffb/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 18:09:56,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:09:56,056 INFO L263 TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-25 18:09:56,058 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 18:09:56,092 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 18:09:56,157 INFO L321 Elim1Store]: treesize reduction 86, result has 25.9 percent of original size [2022-11-25 18:09:56,157 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 18:09:56,239 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 18:09:56,240 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 18:09:56,293 INFO L321 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2022-11-25 18:09:56,294 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 18:09:56,309 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 18:09:56,309 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 18:09:56,310 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-25 18:09:56,310 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [620447457] [2022-11-25 18:09:56,310 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [620447457] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:09:56,310 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 18:09:56,310 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-25 18:09:56,310 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1717275943] [2022-11-25 18:09:56,310 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:09:56,311 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-25 18:09:56,311 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-25 18:09:56,311 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-25 18:09:56,311 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-25 18:09:56,591 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 229 out of 582 [2022-11-25 18:09:56,592 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 83 transitions, 323 flow. Second operand has 4 states, 4 states have (on average 230.0) internal successors, (920), 4 states have internal predecessors, (920), 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 18:09:56,593 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 18:09:56,593 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 229 of 582 [2022-11-25 18:09:56,593 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 18:09:59,268 INFO L130 PetriNetUnfolder]: 13171/18940 cut-off events. [2022-11-25 18:09:59,269 INFO L131 PetriNetUnfolder]: For 138/138 co-relation queries the response was YES. [2022-11-25 18:09:59,319 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38277 conditions, 18940 events. 13171/18940 cut-off events. For 138/138 co-relation queries the response was YES. Maximal size of possible extension queue 1294. Compared 115489 event pairs, 11340 based on Foata normal form. 0/7328 useless extension candidates. Maximal degree in co-relation 38263. Up to 18940 conditions per place. [2022-11-25 18:09:59,418 INFO L137 encePairwiseOnDemand]: 579/582 looper letters, 78 selfloop transitions, 1 changer transitions 0/79 dead transitions. [2022-11-25 18:09:59,418 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 79 transitions, 461 flow [2022-11-25 18:09:59,419 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 18:09:59,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-25 18:09:59,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 746 transitions. [2022-11-25 18:09:59,422 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.427262313860252 [2022-11-25 18:09:59,422 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 746 transitions. [2022-11-25 18:09:59,423 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 746 transitions. [2022-11-25 18:09:59,423 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 18:09:59,424 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 746 transitions. [2022-11-25 18:09:59,426 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 248.66666666666666) internal successors, (746), 3 states have internal predecessors, (746), 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 18:09:59,430 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 582.0) internal successors, (2328), 4 states have internal predecessors, (2328), 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 18:09:59,432 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 582.0) internal successors, (2328), 4 states have internal predecessors, (2328), 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 18:09:59,432 INFO L175 Difference]: Start difference. First operand has 70 places, 83 transitions, 323 flow. Second operand 3 states and 746 transitions. [2022-11-25 18:09:59,432 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 79 transitions, 461 flow [2022-11-25 18:09:59,434 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 79 transitions, 460 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-25 18:09:59,436 INFO L231 Difference]: Finished difference. Result has 69 places, 79 transitions, 304 flow [2022-11-25 18:09:59,436 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=582, PETRI_DIFFERENCE_MINUEND_FLOW=302, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=304, PETRI_PLACES=69, PETRI_TRANSITIONS=79} [2022-11-25 18:09:59,437 INFO L288 CegarLoopForPetriNet]: 69 programPoint places, 0 predicate places. [2022-11-25 18:09:59,437 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 79 transitions, 304 flow [2022-11-25 18:09:59,438 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 230.0) internal successors, (920), 4 states have internal predecessors, (920), 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 18:09:59,438 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 18:09:59,438 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2022-11-25 18:09:59,452 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fb60592-ef88-48e4-98ea-3b55ef6f1ffb/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 18:09:59,651 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fb60592-ef88-48e4-98ea-3b55ef6f1ffb/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 18:09:59,652 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 52 more)] === [2022-11-25 18:09:59,652 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:09:59,652 INFO L85 PathProgramCache]: Analyzing trace with hash -1030958566, now seen corresponding path program 1 times [2022-11-25 18:09:59,652 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-25 18:09:59,653 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [135242281] [2022-11-25 18:09:59,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:09:59,653 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 18:09:59,653 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fb60592-ef88-48e4-98ea-3b55ef6f1ffb/bin/uautomizer-ZsLfNo2U6R/mathsat [2022-11-25 18:09:59,654 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fb60592-ef88-48e4-98ea-3b55ef6f1ffb/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 18:09:59,656 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fb60592-ef88-48e4-98ea-3b55ef6f1ffb/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 18:09:59,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:09:59,787 INFO L263 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-25 18:09:59,788 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 18:09:59,805 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 18:09:59,805 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 18:09:59,806 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-25 18:09:59,806 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [135242281] [2022-11-25 18:09:59,806 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [135242281] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:09:59,806 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 18:09:59,806 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-25 18:09:59,807 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [76720609] [2022-11-25 18:09:59,807 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:09:59,807 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 18:09:59,807 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-25 18:09:59,808 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 18:09:59,808 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 18:09:59,824 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 233 out of 582 [2022-11-25 18:09:59,826 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 79 transitions, 304 flow. Second operand has 3 states, 3 states have (on average 235.0) internal successors, (705), 3 states have internal predecessors, (705), 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 18:09:59,826 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 18:09:59,826 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 233 of 582 [2022-11-25 18:09:59,826 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 18:10:03,780 INFO L130 PetriNetUnfolder]: 15031/21562 cut-off events. [2022-11-25 18:10:03,780 INFO L131 PetriNetUnfolder]: For 231/231 co-relation queries the response was YES. [2022-11-25 18:10:03,815 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43531 conditions, 21562 events. 15031/21562 cut-off events. For 231/231 co-relation queries the response was YES. Maximal size of possible extension queue 1355. Compared 137226 event pairs, 3735 based on Foata normal form. 0/8348 useless extension candidates. Maximal degree in co-relation 43516. Up to 19252 conditions per place. [2022-11-25 18:10:03,863 INFO L137 encePairwiseOnDemand]: 572/582 looper letters, 103 selfloop transitions, 5 changer transitions 0/108 dead transitions. [2022-11-25 18:10:03,863 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 108 transitions, 582 flow [2022-11-25 18:10:03,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 18:10:03,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-25 18:10:03,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 790 transitions. [2022-11-25 18:10:03,867 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4524627720504009 [2022-11-25 18:10:03,867 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 790 transitions. [2022-11-25 18:10:03,867 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 790 transitions. [2022-11-25 18:10:03,868 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 18:10:03,868 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 790 transitions. [2022-11-25 18:10:03,870 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 263.3333333333333) internal successors, (790), 3 states have internal predecessors, (790), 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 18:10:03,873 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 582.0) internal successors, (2328), 4 states have internal predecessors, (2328), 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 18:10:03,874 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 582.0) internal successors, (2328), 4 states have internal predecessors, (2328), 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 18:10:03,875 INFO L175 Difference]: Start difference. First operand has 69 places, 79 transitions, 304 flow. Second operand 3 states and 790 transitions. [2022-11-25 18:10:03,875 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 108 transitions, 582 flow [2022-11-25 18:10:03,876 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 108 transitions, 581 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-25 18:10:03,878 INFO L231 Difference]: Finished difference. Result has 71 places, 83 transitions, 344 flow [2022-11-25 18:10:03,879 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=582, PETRI_DIFFERENCE_MINUEND_FLOW=303, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=344, PETRI_PLACES=71, PETRI_TRANSITIONS=83} [2022-11-25 18:10:03,880 INFO L288 CegarLoopForPetriNet]: 69 programPoint places, 2 predicate places. [2022-11-25 18:10:03,880 INFO L495 AbstractCegarLoop]: Abstraction has has 71 places, 83 transitions, 344 flow [2022-11-25 18:10:03,881 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 235.0) internal successors, (705), 3 states have internal predecessors, (705), 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 18:10:03,881 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 18:10:03,881 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2022-11-25 18:10:03,899 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fb60592-ef88-48e4-98ea-3b55ef6f1ffb/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)] Forceful destruction successful, exit code 0 [2022-11-25 18:10:04,093 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fb60592-ef88-48e4-98ea-3b55ef6f1ffb/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 18:10:04,094 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 52 more)] === [2022-11-25 18:10:04,094 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:10:04,094 INFO L85 PathProgramCache]: Analyzing trace with hash -1030958502, now seen corresponding path program 1 times [2022-11-25 18:10:04,095 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-25 18:10:04,095 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1756818927] [2022-11-25 18:10:04,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:10:04,095 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 18:10:04,095 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fb60592-ef88-48e4-98ea-3b55ef6f1ffb/bin/uautomizer-ZsLfNo2U6R/mathsat [2022-11-25 18:10:04,097 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fb60592-ef88-48e4-98ea-3b55ef6f1ffb/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 18:10:04,108 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fb60592-ef88-48e4-98ea-3b55ef6f1ffb/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 (8)] Waiting until timeout for monitored process [2022-11-25 18:10:04,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:10:04,271 INFO L263 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 15 conjunts are in the unsatisfiable core [2022-11-25 18:10:04,274 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 18:10:04,296 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 18:10:04,300 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 18:10:04,307 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 18:10:04,385 INFO L321 Elim1Store]: treesize reduction 33, result has 40.0 percent of original size [2022-11-25 18:10:04,386 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 15 treesize of output 32 [2022-11-25 18:10:04,405 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 12 [2022-11-25 18:10:04,477 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 18:10:04,478 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 18:10:04,505 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 18:10:04,507 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 18:10:04,572 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 18:10:04,572 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 18:10:04,572 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-25 18:10:04,572 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1756818927] [2022-11-25 18:10:04,572 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1756818927] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:10:04,572 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 18:10:04,573 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-25 18:10:04,573 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1530434605] [2022-11-25 18:10:04,573 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:10:04,573 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-25 18:10:04,573 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-25 18:10:04,574 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-25 18:10:04,574 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-25 18:10:04,917 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 229 out of 582 [2022-11-25 18:10:04,919 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 83 transitions, 344 flow. Second operand has 4 states, 4 states have (on average 230.5) internal successors, (922), 4 states have internal predecessors, (922), 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 18:10:04,919 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 18:10:04,919 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 229 of 582 [2022-11-25 18:10:04,919 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 18:10:08,189 INFO L130 PetriNetUnfolder]: 14524/20818 cut-off events. [2022-11-25 18:10:08,189 INFO L131 PetriNetUnfolder]: For 1674/1674 co-relation queries the response was YES. [2022-11-25 18:10:08,232 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47733 conditions, 20818 events. 14524/20818 cut-off events. For 1674/1674 co-relation queries the response was YES. Maximal size of possible extension queue 1297. Compared 128979 event pairs, 10884 based on Foata normal form. 0/10247 useless extension candidates. Maximal degree in co-relation 47716. Up to 20818 conditions per place. [2022-11-25 18:10:08,291 INFO L137 encePairwiseOnDemand]: 579/582 looper letters, 80 selfloop transitions, 1 changer transitions 0/81 dead transitions. [2022-11-25 18:10:08,291 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 81 transitions, 502 flow [2022-11-25 18:10:08,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 18:10:08,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-25 18:10:08,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 744 transitions. [2022-11-25 18:10:08,294 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4261168384879725 [2022-11-25 18:10:08,294 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 744 transitions. [2022-11-25 18:10:08,294 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 744 transitions. [2022-11-25 18:10:08,295 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 18:10:08,295 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 744 transitions. [2022-11-25 18:10:08,296 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 248.0) internal successors, (744), 3 states have internal predecessors, (744), 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 18:10:08,299 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 582.0) internal successors, (2328), 4 states have internal predecessors, (2328), 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 18:10:08,299 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 582.0) internal successors, (2328), 4 states have internal predecessors, (2328), 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 18:10:08,299 INFO L175 Difference]: Start difference. First operand has 71 places, 83 transitions, 344 flow. Second operand 3 states and 744 transitions. [2022-11-25 18:10:08,300 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 81 transitions, 502 flow [2022-11-25 18:10:08,305 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 81 transitions, 497 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-25 18:10:08,306 INFO L231 Difference]: Finished difference. Result has 70 places, 81 transitions, 337 flow [2022-11-25 18:10:08,306 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=582, PETRI_DIFFERENCE_MINUEND_FLOW=335, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=337, PETRI_PLACES=70, PETRI_TRANSITIONS=81} [2022-11-25 18:10:08,307 INFO L288 CegarLoopForPetriNet]: 69 programPoint places, 1 predicate places. [2022-11-25 18:10:08,307 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 81 transitions, 337 flow [2022-11-25 18:10:08,308 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 230.5) internal successors, (922), 4 states have internal predecessors, (922), 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 18:10:08,308 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 18:10:08,308 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2022-11-25 18:10:08,324 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fb60592-ef88-48e4-98ea-3b55ef6f1ffb/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 (8)] Forceful destruction successful, exit code 0 [2022-11-25 18:10:08,520 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fb60592-ef88-48e4-98ea-3b55ef6f1ffb/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 18:10:08,520 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 52 more)] === [2022-11-25 18:10:08,520 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:10:08,520 INFO L85 PathProgramCache]: Analyzing trace with hash -1030958500, now seen corresponding path program 1 times [2022-11-25 18:10:08,521 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-25 18:10:08,521 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [682700729] [2022-11-25 18:10:08,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:10:08,521 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 18:10:08,521 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fb60592-ef88-48e4-98ea-3b55ef6f1ffb/bin/uautomizer-ZsLfNo2U6R/mathsat [2022-11-25 18:10:08,522 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fb60592-ef88-48e4-98ea-3b55ef6f1ffb/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 18:10:08,526 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fb60592-ef88-48e4-98ea-3b55ef6f1ffb/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 (9)] Waiting until timeout for monitored process [2022-11-25 18:10:08,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:10:08,667 INFO L263 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-25 18:10:08,669 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 18:10:08,689 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 18:10:08,759 INFO L321 Elim1Store]: treesize reduction 79, result has 27.5 percent of original size [2022-11-25 18:10:08,759 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 18:10:08,997 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 18:10:09,026 INFO L321 Elim1Store]: treesize reduction 23, result has 32.4 percent of original size [2022-11-25 18:10:09,027 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 18:10:09,266 INFO L321 Elim1Store]: treesize reduction 42, result has 26.3 percent of original size [2022-11-25 18:10:09,266 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 18:10:09,392 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 18:10:09,393 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 18:10:09,393 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-25 18:10:09,393 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [682700729] [2022-11-25 18:10:09,393 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [682700729] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:10:09,394 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 18:10:09,394 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-25 18:10:09,394 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1239444413] [2022-11-25 18:10:09,394 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:10:09,394 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-25 18:10:09,395 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-25 18:10:09,395 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-25 18:10:09,395 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-25 18:10:09,972 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 229 out of 582 [2022-11-25 18:10:09,973 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 81 transitions, 337 flow. Second operand has 4 states, 4 states have (on average 230.5) internal successors, (922), 4 states have internal predecessors, (922), 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 18:10:09,973 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 18:10:09,973 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 229 of 582 [2022-11-25 18:10:09,973 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 18:10:13,158 INFO L130 PetriNetUnfolder]: 14017/20074 cut-off events. [2022-11-25 18:10:13,158 INFO L131 PetriNetUnfolder]: For 1599/1599 co-relation queries the response was YES. [2022-11-25 18:10:13,208 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45502 conditions, 20074 events. 14017/20074 cut-off events. For 1599/1599 co-relation queries the response was YES. Maximal size of possible extension queue 1274. Compared 123571 event pairs, 10482 based on Foata normal form. 0/10040 useless extension candidates. Maximal degree in co-relation 45484. Up to 20074 conditions per place. [2022-11-25 18:10:13,269 INFO L137 encePairwiseOnDemand]: 579/582 looper letters, 78 selfloop transitions, 1 changer transitions 0/79 dead transitions. [2022-11-25 18:10:13,269 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 79 transitions, 491 flow [2022-11-25 18:10:13,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 18:10:13,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-25 18:10:13,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 742 transitions. [2022-11-25 18:10:13,274 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.424971363115693 [2022-11-25 18:10:13,274 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 742 transitions. [2022-11-25 18:10:13,274 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 742 transitions. [2022-11-25 18:10:13,275 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 18:10:13,275 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 742 transitions. [2022-11-25 18:10:13,277 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 247.33333333333334) internal successors, (742), 3 states have internal predecessors, (742), 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 18:10:13,280 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 582.0) internal successors, (2328), 4 states have internal predecessors, (2328), 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 18:10:13,281 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 582.0) internal successors, (2328), 4 states have internal predecessors, (2328), 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 18:10:13,281 INFO L175 Difference]: Start difference. First operand has 70 places, 81 transitions, 337 flow. Second operand 3 states and 742 transitions. [2022-11-25 18:10:13,282 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 79 transitions, 491 flow [2022-11-25 18:10:13,284 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 79 transitions, 490 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-25 18:10:13,285 INFO L231 Difference]: Finished difference. Result has 69 places, 79 transitions, 334 flow [2022-11-25 18:10:13,286 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=582, PETRI_DIFFERENCE_MINUEND_FLOW=332, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=334, PETRI_PLACES=69, PETRI_TRANSITIONS=79} [2022-11-25 18:10:13,286 INFO L288 CegarLoopForPetriNet]: 69 programPoint places, 0 predicate places. [2022-11-25 18:10:13,287 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 79 transitions, 334 flow [2022-11-25 18:10:13,287 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 230.5) internal successors, (922), 4 states have internal predecessors, (922), 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 18:10:13,287 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 18:10:13,287 INFO L209 CegarLoopForPetriNet]: trace histogram [4, 1, 1] [2022-11-25 18:10:13,298 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fb60592-ef88-48e4-98ea-3b55ef6f1ffb/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 (9)] Forceful destruction successful, exit code 0 [2022-11-25 18:10:13,491 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fb60592-ef88-48e4-98ea-3b55ef6f1ffb/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 18:10:13,492 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 52 more)] === [2022-11-25 18:10:13,495 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:10:13,495 INFO L85 PathProgramCache]: Analyzing trace with hash -1085265628, now seen corresponding path program 2 times [2022-11-25 18:10:13,496 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-25 18:10:13,496 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [644801992] [2022-11-25 18:10:13,496 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-25 18:10:13,496 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 18:10:13,496 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fb60592-ef88-48e4-98ea-3b55ef6f1ffb/bin/uautomizer-ZsLfNo2U6R/mathsat [2022-11-25 18:10:13,497 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fb60592-ef88-48e4-98ea-3b55ef6f1ffb/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 18:10:13,498 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fb60592-ef88-48e4-98ea-3b55ef6f1ffb/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 (10)] Waiting until timeout for monitored process [2022-11-25 18:10:13,654 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-25 18:10:13,655 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-25 18:10:13,659 INFO L263 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 13 conjunts are in the unsatisfiable core [2022-11-25 18:10:13,660 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 18:10:13,796 INFO L321 Elim1Store]: treesize reduction 78, result has 32.2 percent of original size [2022-11-25 18:10:13,797 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 18:10:13,958 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 18:10:13,958 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 18:10:14,740 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 18:10:14,741 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-25 18:10:14,741 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [644801992] [2022-11-25 18:10:14,741 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [644801992] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 18:10:14,741 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-25 18:10:14,741 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2022-11-25 18:10:14,741 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [605204881] [2022-11-25 18:10:14,741 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-25 18:10:14,742 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-25 18:10:14,742 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-25 18:10:14,742 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-25 18:10:14,742 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2022-11-25 18:10:21,889 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 210 out of 582 [2022-11-25 18:10:21,892 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 79 transitions, 334 flow. Second operand has 12 states, 12 states have (on average 211.0) internal successors, (2532), 12 states have internal predecessors, (2532), 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 18:10:21,892 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 18:10:21,892 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 210 of 582 [2022-11-25 18:10:21,892 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 18:10:25,708 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-25 18:10:27,629 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.92s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-25 18:10:28,798 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.14s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-25 18:10:30,808 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-25 18:10:33,403 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-25 18:10:35,110 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.71s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-25 18:10:36,300 WARN L539 Checker$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 18:10:38,303 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-25 18:10:52,283 INFO L130 PetriNetUnfolder]: 37366/53502 cut-off events. [2022-11-25 18:10:52,283 INFO L131 PetriNetUnfolder]: For 4286/4286 co-relation queries the response was YES. [2022-11-25 18:10:52,417 INFO L83 FinitePrefix]: Finished finitePrefix Result has 121195 conditions, 53502 events. 37366/53502 cut-off events. For 4286/4286 co-relation queries the response was YES. Maximal size of possible extension queue 2046. Compared 356533 event pairs, 27952 based on Foata normal form. 14/26752 useless extension candidates. Maximal degree in co-relation 121176. Up to 13185 conditions per place. [2022-11-25 18:10:52,558 INFO L137 encePairwiseOnDemand]: 572/582 looper letters, 392 selfloop transitions, 46 changer transitions 0/438 dead transitions. [2022-11-25 18:10:52,558 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 438 transitions, 2272 flow [2022-11-25 18:10:52,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-25 18:10:52,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2022-11-25 18:10:52,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 2940 transitions. [2022-11-25 18:10:52,567 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4209621993127148 [2022-11-25 18:10:52,567 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 2940 transitions. [2022-11-25 18:10:52,567 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 2940 transitions. [2022-11-25 18:10:52,569 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 18:10:52,570 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 2940 transitions. [2022-11-25 18:10:52,576 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 245.0) internal successors, (2940), 12 states have internal predecessors, (2940), 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 18:10:52,586 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 582.0) internal successors, (7566), 13 states have internal predecessors, (7566), 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 18:10:52,588 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 582.0) internal successors, (7566), 13 states have internal predecessors, (7566), 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 18:10:52,589 INFO L175 Difference]: Start difference. First operand has 69 places, 79 transitions, 334 flow. Second operand 12 states and 2940 transitions. [2022-11-25 18:10:52,589 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 438 transitions, 2272 flow [2022-11-25 18:10:52,593 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 438 transitions, 2271 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-25 18:10:52,597 INFO L231 Difference]: Finished difference. Result has 86 places, 104 transitions, 657 flow [2022-11-25 18:10:52,597 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=582, PETRI_DIFFERENCE_MINUEND_FLOW=333, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=657, PETRI_PLACES=86, PETRI_TRANSITIONS=104} [2022-11-25 18:10:52,598 INFO L288 CegarLoopForPetriNet]: 69 programPoint places, 17 predicate places. [2022-11-25 18:10:52,598 INFO L495 AbstractCegarLoop]: Abstraction has has 86 places, 104 transitions, 657 flow [2022-11-25 18:10:52,599 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 211.0) internal successors, (2532), 12 states have internal predecessors, (2532), 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 18:10:52,599 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 18:10:52,600 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 18:10:52,611 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fb60592-ef88-48e4-98ea-3b55ef6f1ffb/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 (10)] Forceful destruction successful, exit code 0 [2022-11-25 18:10:52,807 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fb60592-ef88-48e4-98ea-3b55ef6f1ffb/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 18:10:52,807 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting thread2Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 52 more)] === [2022-11-25 18:10:52,808 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:10:52,808 INFO L85 PathProgramCache]: Analyzing trace with hash 1386360736, now seen corresponding path program 1 times [2022-11-25 18:10:52,808 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-25 18:10:52,808 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1446826663] [2022-11-25 18:10:52,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:10:52,809 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 18:10:52,809 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fb60592-ef88-48e4-98ea-3b55ef6f1ffb/bin/uautomizer-ZsLfNo2U6R/mathsat [2022-11-25 18:10:52,810 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fb60592-ef88-48e4-98ea-3b55ef6f1ffb/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 18:10:52,817 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fb60592-ef88-48e4-98ea-3b55ef6f1ffb/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 (11)] Waiting until timeout for monitored process [2022-11-25 18:10:52,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:10:52,955 INFO L263 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-25 18:10:52,956 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 18:10:52,972 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 18:10:52,973 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 18:10:52,975 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-25 18:10:52,975 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1446826663] [2022-11-25 18:10:52,975 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1446826663] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:10:52,975 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 18:10:52,975 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-25 18:10:52,976 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1844021682] [2022-11-25 18:10:52,976 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:10:52,977 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 18:10:52,977 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-25 18:10:52,978 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 18:10:52,978 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 18:10:52,987 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 233 out of 582 [2022-11-25 18:10:52,987 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 104 transitions, 657 flow. Second operand has 3 states, 3 states have (on average 235.66666666666666) internal successors, (707), 3 states have internal predecessors, (707), 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 18:10:52,988 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 18:10:52,988 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 233 of 582 [2022-11-25 18:10:52,988 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 18:11:00,762 INFO L130 PetriNetUnfolder]: 32550/46526 cut-off events. [2022-11-25 18:11:00,762 INFO L131 PetriNetUnfolder]: For 2233/2233 co-relation queries the response was YES. [2022-11-25 18:11:00,932 INFO L83 FinitePrefix]: Finished finitePrefix Result has 106008 conditions, 46526 events. 32550/46526 cut-off events. For 2233/2233 co-relation queries the response was YES. Maximal size of possible extension queue 1594. Compared 295095 event pairs, 9880 based on Foata normal form. 0/24220 useless extension candidates. Maximal degree in co-relation 105981. Up to 39161 conditions per place. [2022-11-25 18:11:01,054 INFO L137 encePairwiseOnDemand]: 574/582 looper letters, 125 selfloop transitions, 4 changer transitions 0/129 dead transitions. [2022-11-25 18:11:01,054 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 129 transitions, 982 flow [2022-11-25 18:11:01,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 18:11:01,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-25 18:11:01,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 782 transitions. [2022-11-25 18:11:01,056 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.44788087056128295 [2022-11-25 18:11:01,057 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 782 transitions. [2022-11-25 18:11:01,057 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 782 transitions. [2022-11-25 18:11:01,058 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 18:11:01,058 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 782 transitions. [2022-11-25 18:11:01,060 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 260.6666666666667) internal successors, (782), 3 states have internal predecessors, (782), 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 18:11:01,063 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 582.0) internal successors, (2328), 4 states have internal predecessors, (2328), 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 18:11:01,064 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 582.0) internal successors, (2328), 4 states have internal predecessors, (2328), 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 18:11:01,065 INFO L175 Difference]: Start difference. First operand has 86 places, 104 transitions, 657 flow. Second operand 3 states and 782 transitions. [2022-11-25 18:11:01,065 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 129 transitions, 982 flow [2022-11-25 18:11:01,069 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 129 transitions, 891 flow, removed 21 selfloop flow, removed 4 redundant places. [2022-11-25 18:11:01,072 INFO L231 Difference]: Finished difference. Result has 85 places, 106 transitions, 594 flow [2022-11-25 18:11:01,072 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=582, PETRI_DIFFERENCE_MINUEND_FLOW=562, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=103, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=99, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=594, PETRI_PLACES=85, PETRI_TRANSITIONS=106} [2022-11-25 18:11:01,073 INFO L288 CegarLoopForPetriNet]: 69 programPoint places, 16 predicate places. [2022-11-25 18:11:01,073 INFO L495 AbstractCegarLoop]: Abstraction has has 85 places, 106 transitions, 594 flow [2022-11-25 18:11:01,074 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 235.66666666666666) internal successors, (707), 3 states have internal predecessors, (707), 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 18:11:01,074 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 18:11:01,074 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 18:11:01,094 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fb60592-ef88-48e4-98ea-3b55ef6f1ffb/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 (11)] Forceful destruction successful, exit code 0 [2022-11-25 18:11:01,287 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fb60592-ef88-48e4-98ea-3b55ef6f1ffb/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 18:11:01,287 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 52 more)] === [2022-11-25 18:11:01,288 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:11:01,288 INFO L85 PathProgramCache]: Analyzing trace with hash 1386360799, now seen corresponding path program 1 times [2022-11-25 18:11:01,288 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-25 18:11:01,288 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1622969615] [2022-11-25 18:11:01,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:11:01,289 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 18:11:01,289 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fb60592-ef88-48e4-98ea-3b55ef6f1ffb/bin/uautomizer-ZsLfNo2U6R/mathsat [2022-11-25 18:11:01,291 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fb60592-ef88-48e4-98ea-3b55ef6f1ffb/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 18:11:01,311 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fb60592-ef88-48e4-98ea-3b55ef6f1ffb/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 (12)] Waiting until timeout for monitored process [2022-11-25 18:11:01,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:11:01,493 INFO L263 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-25 18:11:01,495 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 18:11:01,526 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 18:11:01,625 INFO L321 Elim1Store]: treesize reduction 62, result has 31.1 percent of original size [2022-11-25 18:11:01,625 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 15 treesize of output 38 [2022-11-25 18:11:01,650 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 510 treesize of output 494 [2022-11-25 18:11:01,731 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 18:11:01,732 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 18:11:01,786 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 18:11:01,788 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 18:11:01,891 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 18:11:01,891 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 18:11:01,891 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-25 18:11:01,891 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1622969615] [2022-11-25 18:11:01,891 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1622969615] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:11:01,891 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 18:11:01,891 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-25 18:11:01,891 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [223172482] [2022-11-25 18:11:01,892 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:11:01,892 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-25 18:11:01,892 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-25 18:11:01,892 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-25 18:11:01,892 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-25 18:11:02,332 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 227 out of 582 [2022-11-25 18:11:02,333 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 106 transitions, 594 flow. Second operand has 5 states, 5 states have (on average 228.6) internal successors, (1143), 5 states have internal predecessors, (1143), 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 18:11:02,333 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 18:11:02,333 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 227 of 582 [2022-11-25 18:11:02,333 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand