./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/weaver/popl20-bad-commit-2.wvr-bad.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 4e7fbc69 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_b0d1ed24-0d8e-49c6-9b89-5b5d95995ed5/bin/uautomizer-QkZJyEgLgS/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0d1ed24-0d8e-49c6-9b89-5b5d95995ed5/bin/uautomizer-QkZJyEgLgS/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0d1ed24-0d8e-49c6-9b89-5b5d95995ed5/bin/uautomizer-QkZJyEgLgS/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0d1ed24-0d8e-49c6-9b89-5b5d95995ed5/bin/uautomizer-QkZJyEgLgS/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/weaver/popl20-bad-commit-2.wvr-bad.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0d1ed24-0d8e-49c6-9b89-5b5d95995ed5/bin/uautomizer-QkZJyEgLgS/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0d1ed24-0d8e-49c6-9b89-5b5d95995ed5/bin/uautomizer-QkZJyEgLgS --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 5bf746ef76f8c8352051d8eb5f02d7a475e14d238622e290fcb51135a3348206 --- 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-4e7fbc6 [2022-11-23 01:53:24,100 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-23 01:53:24,102 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-23 01:53:24,145 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-23 01:53:24,145 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-23 01:53:24,149 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-23 01:53:24,152 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-23 01:53:24,155 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-23 01:53:24,157 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-23 01:53:24,162 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-23 01:53:24,164 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-23 01:53:24,167 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-23 01:53:24,167 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-23 01:53:24,170 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-23 01:53:24,171 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-23 01:53:24,173 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-23 01:53:24,175 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-23 01:53:24,176 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-23 01:53:24,177 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-23 01:53:24,184 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-23 01:53:24,185 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-23 01:53:24,188 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-23 01:53:24,189 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-23 01:53:24,190 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-23 01:53:24,196 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-23 01:53:24,196 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-23 01:53:24,196 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-23 01:53:24,197 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-23 01:53:24,198 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-23 01:53:24,198 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-23 01:53:24,199 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-23 01:53:24,200 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-23 01:53:24,201 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-23 01:53:24,202 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-23 01:53:24,203 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-23 01:53:24,204 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-23 01:53:24,204 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-23 01:53:24,204 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-23 01:53:24,205 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-23 01:53:24,206 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-23 01:53:24,216 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-23 01:53:24,217 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0d1ed24-0d8e-49c6-9b89-5b5d95995ed5/bin/uautomizer-QkZJyEgLgS/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2022-11-23 01:53:24,291 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-23 01:53:24,291 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-23 01:53:24,291 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-23 01:53:24,291 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-23 01:53:24,292 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-23 01:53:24,292 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-23 01:53:24,293 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-23 01:53:24,293 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-23 01:53:24,293 INFO L138 SettingsManager]: * Use SBE=true [2022-11-23 01:53:24,293 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-23 01:53:24,293 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-23 01:53:24,294 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-23 01:53:24,294 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-23 01:53:24,294 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-23 01:53:24,294 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-23 01:53:24,294 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-11-23 01:53:24,294 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-11-23 01:53:24,295 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-11-23 01:53:24,295 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-23 01:53:24,296 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-23 01:53:24,296 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-23 01:53:24,296 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-23 01:53:24,296 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-23 01:53:24,297 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-23 01:53:24,297 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-23 01:53:24,297 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 01:53:24,297 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-23 01:53:24,297 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-23 01:53:24,298 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-23 01:53:24,298 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-23 01:53:24,298 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-23 01:53:24,298 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-11-23 01:53:24,298 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-23 01:53:24,299 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_b0d1ed24-0d8e-49c6-9b89-5b5d95995ed5/bin/uautomizer-QkZJyEgLgS/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0d1ed24-0d8e-49c6-9b89-5b5d95995ed5/bin/uautomizer-QkZJyEgLgS Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5bf746ef76f8c8352051d8eb5f02d7a475e14d238622e290fcb51135a3348206 [2022-11-23 01:53:24,517 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-23 01:53:24,553 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-23 01:53:24,556 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-23 01:53:24,557 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-23 01:53:24,557 INFO L275 PluginConnector]: CDTParser initialized [2022-11-23 01:53:24,559 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0d1ed24-0d8e-49c6-9b89-5b5d95995ed5/bin/uautomizer-QkZJyEgLgS/../../sv-benchmarks/c/weaver/popl20-bad-commit-2.wvr-bad.c [2022-11-23 01:53:27,761 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-23 01:53:28,008 INFO L351 CDTParser]: Found 1 translation units. [2022-11-23 01:53:28,010 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0d1ed24-0d8e-49c6-9b89-5b5d95995ed5/sv-benchmarks/c/weaver/popl20-bad-commit-2.wvr-bad.c [2022-11-23 01:53:28,021 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0d1ed24-0d8e-49c6-9b89-5b5d95995ed5/bin/uautomizer-QkZJyEgLgS/data/eb97a01fd/5d085a76ea7d45c9b42ce4975f329c68/FLAG98ee6b7f0 [2022-11-23 01:53:28,037 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0d1ed24-0d8e-49c6-9b89-5b5d95995ed5/bin/uautomizer-QkZJyEgLgS/data/eb97a01fd/5d085a76ea7d45c9b42ce4975f329c68 [2022-11-23 01:53:28,040 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-23 01:53:28,042 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-23 01:53:28,044 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-23 01:53:28,044 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-23 01:53:28,048 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-23 01:53:28,049 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 01:53:28" (1/1) ... [2022-11-23 01:53:28,051 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@8b283c5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:53:28, skipping insertion in model container [2022-11-23 01:53:28,051 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 01:53:28" (1/1) ... [2022-11-23 01:53:28,059 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-23 01:53:28,092 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-23 01:53:28,286 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_b0d1ed24-0d8e-49c6-9b89-5b5d95995ed5/sv-benchmarks/c/weaver/popl20-bad-commit-2.wvr-bad.c[6687,6700] [2022-11-23 01:53:28,297 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 01:53:28,310 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) [2022-11-23 01:53:28,311 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@206f2c9d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:53:28, skipping insertion in model container [2022-11-23 01:53:28,311 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-23 01:53:28,311 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2022-11-23 01:53:28,313 INFO L158 Benchmark]: Toolchain (without parser) took 270.48ms. Allocated memory is still 192.9MB. Free memory was 163.4MB in the beginning and 156.1MB in the end (delta: 7.3MB). Peak memory consumption was 8.5MB. Max. memory is 16.1GB. [2022-11-23 01:53:28,314 INFO L158 Benchmark]: CDTParser took 0.28ms. Allocated memory is still 119.5MB. Free memory is still 84.9MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-23 01:53:28,315 INFO L158 Benchmark]: CACSL2BoogieTranslator took 267.56ms. Allocated memory is still 192.9MB. Free memory was 163.2MB in the beginning and 156.1MB in the end (delta: 7.1MB). Peak memory consumption was 8.5MB. Max. memory is 16.1GB. [2022-11-23 01:53:28,316 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28ms. Allocated memory is still 119.5MB. Free memory is still 84.9MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 267.56ms. Allocated memory is still 192.9MB. Free memory was 163.2MB in the beginning and 156.1MB in the end (delta: 7.1MB). Peak memory consumption was 8.5MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 215]: 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_b0d1ed24-0d8e-49c6-9b89-5b5d95995ed5/bin/uautomizer-QkZJyEgLgS/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0d1ed24-0d8e-49c6-9b89-5b5d95995ed5/bin/uautomizer-QkZJyEgLgS/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0d1ed24-0d8e-49c6-9b89-5b5d95995ed5/bin/uautomizer-QkZJyEgLgS/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0d1ed24-0d8e-49c6-9b89-5b5d95995ed5/bin/uautomizer-QkZJyEgLgS/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/weaver/popl20-bad-commit-2.wvr-bad.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0d1ed24-0d8e-49c6-9b89-5b5d95995ed5/bin/uautomizer-QkZJyEgLgS/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0d1ed24-0d8e-49c6-9b89-5b5d95995ed5/bin/uautomizer-QkZJyEgLgS --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 5bf746ef76f8c8352051d8eb5f02d7a475e14d238622e290fcb51135a3348206 --- 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-4e7fbc6 [2022-11-23 01:53:30,614 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-23 01:53:30,616 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-23 01:53:30,641 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-23 01:53:30,642 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-23 01:53:30,643 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-23 01:53:30,644 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-23 01:53:30,647 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-23 01:53:30,649 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-23 01:53:30,650 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-23 01:53:30,651 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-23 01:53:30,652 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-23 01:53:30,653 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-23 01:53:30,654 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-23 01:53:30,655 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-23 01:53:30,657 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-23 01:53:30,658 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-23 01:53:30,659 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-23 01:53:30,661 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-23 01:53:30,663 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-23 01:53:30,665 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-23 01:53:30,666 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-23 01:53:30,667 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-23 01:53:30,668 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-23 01:53:30,672 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-23 01:53:30,673 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-23 01:53:30,673 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-23 01:53:30,674 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-23 01:53:30,675 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-23 01:53:30,676 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-23 01:53:30,676 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-23 01:53:30,677 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-23 01:53:30,678 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-23 01:53:30,679 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-23 01:53:30,692 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-23 01:53:30,693 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-23 01:53:30,694 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-23 01:53:30,694 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-23 01:53:30,695 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-23 01:53:30,696 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-23 01:53:30,697 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-23 01:53:30,698 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0d1ed24-0d8e-49c6-9b89-5b5d95995ed5/bin/uautomizer-QkZJyEgLgS/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2022-11-23 01:53:30,737 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-23 01:53:30,740 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-23 01:53:30,742 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-23 01:53:30,742 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-23 01:53:30,743 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-23 01:53:30,744 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-23 01:53:30,745 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-23 01:53:30,745 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-23 01:53:30,745 INFO L138 SettingsManager]: * Use SBE=true [2022-11-23 01:53:30,745 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-23 01:53:30,746 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-23 01:53:30,747 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-23 01:53:30,747 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-23 01:53:30,747 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-23 01:53:30,747 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-23 01:53:30,748 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-11-23 01:53:30,748 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-11-23 01:53:30,748 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-11-23 01:53:30,748 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-23 01:53:30,748 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-23 01:53:30,749 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-11-23 01:53:30,749 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-11-23 01:53:30,749 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-23 01:53:30,749 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-23 01:53:30,750 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-23 01:53:30,750 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-23 01:53:30,750 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-23 01:53:30,750 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 01:53:30,750 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-23 01:53:30,751 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-23 01:53:30,751 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-11-23 01:53:30,751 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-11-23 01:53:30,751 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-23 01:53:30,751 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-11-23 01:53:30,752 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-23 01:53:30,752 INFO L138 SettingsManager]: * Logic for external solver=AUFBV [2022-11-23 01:53:30,752 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_b0d1ed24-0d8e-49c6-9b89-5b5d95995ed5/bin/uautomizer-QkZJyEgLgS/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0d1ed24-0d8e-49c6-9b89-5b5d95995ed5/bin/uautomizer-QkZJyEgLgS Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5bf746ef76f8c8352051d8eb5f02d7a475e14d238622e290fcb51135a3348206 [2022-11-23 01:53:31,142 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-23 01:53:31,171 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-23 01:53:31,174 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-23 01:53:31,175 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-23 01:53:31,176 INFO L275 PluginConnector]: CDTParser initialized [2022-11-23 01:53:31,182 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0d1ed24-0d8e-49c6-9b89-5b5d95995ed5/bin/uautomizer-QkZJyEgLgS/../../sv-benchmarks/c/weaver/popl20-bad-commit-2.wvr-bad.c [2022-11-23 01:53:34,498 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-23 01:53:34,816 INFO L351 CDTParser]: Found 1 translation units. [2022-11-23 01:53:34,817 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0d1ed24-0d8e-49c6-9b89-5b5d95995ed5/sv-benchmarks/c/weaver/popl20-bad-commit-2.wvr-bad.c [2022-11-23 01:53:34,834 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0d1ed24-0d8e-49c6-9b89-5b5d95995ed5/bin/uautomizer-QkZJyEgLgS/data/37c581982/0c784cbb0a1e45e68d740cbc8afb7221/FLAG3da207356 [2022-11-23 01:53:34,866 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0d1ed24-0d8e-49c6-9b89-5b5d95995ed5/bin/uautomizer-QkZJyEgLgS/data/37c581982/0c784cbb0a1e45e68d740cbc8afb7221 [2022-11-23 01:53:34,871 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-23 01:53:34,874 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-23 01:53:34,880 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-23 01:53:34,880 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-23 01:53:34,885 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-23 01:53:34,886 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 01:53:34" (1/1) ... [2022-11-23 01:53:34,887 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5036acdb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:53:34, skipping insertion in model container [2022-11-23 01:53:34,888 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 01:53:34" (1/1) ... [2022-11-23 01:53:34,897 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-23 01:53:34,943 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-23 01:53:35,240 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_b0d1ed24-0d8e-49c6-9b89-5b5d95995ed5/sv-benchmarks/c/weaver/popl20-bad-commit-2.wvr-bad.c[6687,6700] [2022-11-23 01:53:35,250 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 01:53:35,265 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2022-11-23 01:53:35,271 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-23 01:53:35,298 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_b0d1ed24-0d8e-49c6-9b89-5b5d95995ed5/sv-benchmarks/c/weaver/popl20-bad-commit-2.wvr-bad.c[6687,6700] [2022-11-23 01:53:35,301 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 01:53:35,307 INFO L203 MainTranslator]: Completed pre-run [2022-11-23 01:53:35,360 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_b0d1ed24-0d8e-49c6-9b89-5b5d95995ed5/sv-benchmarks/c/weaver/popl20-bad-commit-2.wvr-bad.c[6687,6700] [2022-11-23 01:53:35,375 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 01:53:35,401 INFO L208 MainTranslator]: Completed translation [2022-11-23 01:53:35,402 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:53:35 WrapperNode [2022-11-23 01:53:35,402 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-23 01:53:35,404 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-23 01:53:35,404 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-23 01:53:35,404 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-23 01:53:35,413 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:53:35" (1/1) ... [2022-11-23 01:53:35,442 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:53:35" (1/1) ... [2022-11-23 01:53:35,501 INFO L138 Inliner]: procedures = 28, calls = 93, calls flagged for inlining = 27, calls inlined = 33, statements flattened = 446 [2022-11-23 01:53:35,509 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-23 01:53:35,510 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-23 01:53:35,511 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-23 01:53:35,511 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-23 01:53:35,519 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:53:35" (1/1) ... [2022-11-23 01:53:35,519 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:53:35" (1/1) ... [2022-11-23 01:53:35,530 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:53:35" (1/1) ... [2022-11-23 01:53:35,530 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:53:35" (1/1) ... [2022-11-23 01:53:35,548 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:53:35" (1/1) ... [2022-11-23 01:53:35,560 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:53:35" (1/1) ... [2022-11-23 01:53:35,563 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:53:35" (1/1) ... [2022-11-23 01:53:35,566 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:53:35" (1/1) ... [2022-11-23 01:53:35,599 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-23 01:53:35,600 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-23 01:53:35,600 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-23 01:53:35,600 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-23 01:53:35,601 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:53:35" (1/1) ... [2022-11-23 01:53:35,609 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 01:53:35,623 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0d1ed24-0d8e-49c6-9b89-5b5d95995ed5/bin/uautomizer-QkZJyEgLgS/z3 [2022-11-23 01:53:35,641 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0d1ed24-0d8e-49c6-9b89-5b5d95995ed5/bin/uautomizer-QkZJyEgLgS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-23 01:53:35,658 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0d1ed24-0d8e-49c6-9b89-5b5d95995ed5/bin/uautomizer-QkZJyEgLgS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-23 01:53:35,700 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-23 01:53:35,700 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-11-23 01:53:35,701 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-23 01:53:35,701 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2022-11-23 01:53:35,701 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-11-23 01:53:35,701 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-11-23 01:53:35,701 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-11-23 01:53:35,701 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-11-23 01:53:35,702 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-11-23 01:53:35,740 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-11-23 01:53:35,740 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2022-11-23 01:53:35,740 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2022-11-23 01:53:35,740 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-11-23 01:53:35,740 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-11-23 01:53:35,741 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-23 01:53:35,741 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-23 01:53:35,741 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-23 01:53:35,741 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-23 01:53:35,741 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2022-11-23 01:53:35,745 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-23 01:53:35,942 INFO L235 CfgBuilder]: Building ICFG [2022-11-23 01:53:35,945 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-23 01:53:37,192 INFO L276 CfgBuilder]: Performing block encoding [2022-11-23 01:53:37,592 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-23 01:53:37,592 INFO L300 CfgBuilder]: Removed 8 assume(true) statements. [2022-11-23 01:53:37,596 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 01:53:37 BoogieIcfgContainer [2022-11-23 01:53:37,596 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-23 01:53:37,598 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-23 01:53:37,598 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-23 01:53:37,602 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-23 01:53:37,602 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 01:53:34" (1/3) ... [2022-11-23 01:53:37,603 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3bcb5e67 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 01:53:37, skipping insertion in model container [2022-11-23 01:53:37,604 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:53:35" (2/3) ... [2022-11-23 01:53:37,605 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3bcb5e67 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 01:53:37, skipping insertion in model container [2022-11-23 01:53:37,606 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 01:53:37" (3/3) ... [2022-11-23 01:53:37,607 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-bad-commit-2.wvr-bad.c [2022-11-23 01:53:37,628 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-23 01:53:37,628 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 50 error locations. [2022-11-23 01:53:37,628 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-23 01:53:37,799 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2022-11-23 01:53:37,839 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 370 places, 394 transitions, 820 flow [2022-11-23 01:53:37,994 INFO L130 PetriNetUnfolder]: 37/390 cut-off events. [2022-11-23 01:53:37,994 INFO L131 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2022-11-23 01:53:38,004 INFO L83 FinitePrefix]: Finished finitePrefix Result has 407 conditions, 390 events. 37/390 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 457 event pairs, 0 based on Foata normal form. 0/303 useless extension candidates. Maximal degree in co-relation 331. Up to 8 conditions per place. [2022-11-23 01:53:38,005 INFO L82 GeneralOperation]: Start removeDead. Operand has 370 places, 394 transitions, 820 flow [2022-11-23 01:53:38,020 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 361 places, 385 transitions, 794 flow [2022-11-23 01:53:38,024 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-23 01:53:38,039 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 361 places, 385 transitions, 794 flow [2022-11-23 01:53:38,042 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 361 places, 385 transitions, 794 flow [2022-11-23 01:53:38,043 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 361 places, 385 transitions, 794 flow [2022-11-23 01:53:38,135 INFO L130 PetriNetUnfolder]: 37/385 cut-off events. [2022-11-23 01:53:38,135 INFO L131 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2022-11-23 01:53:38,138 INFO L83 FinitePrefix]: Finished finitePrefix Result has 402 conditions, 385 events. 37/385 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 455 event pairs, 0 based on Foata normal form. 0/299 useless extension candidates. Maximal degree in co-relation 331. Up to 8 conditions per place. [2022-11-23 01:53:38,143 INFO L119 LiptonReduction]: Number of co-enabled transitions 10000 [2022-11-23 01:54:57,636 WARN L233 SmtUtils]: Spent 8.70s on a formula simplification. DAG size of input: 163 DAG size of output: 160 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-11-23 01:55:07,718 WARN L233 SmtUtils]: Spent 6.19s on a formula simplification. DAG size of input: 172 DAG size of output: 167 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-11-23 01:55:09,880 INFO L134 LiptonReduction]: Checked pairs total: 13061 [2022-11-23 01:55:09,880 INFO L136 LiptonReduction]: Total number of compositions: 458 [2022-11-23 01:55:09,896 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-23 01:55:09,901 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;@345b2092, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-23 01:55:09,902 INFO L358 AbstractCegarLoop]: Starting to check reachability of 78 error locations. [2022-11-23 01:55:09,905 INFO L130 PetriNetUnfolder]: 1/2 cut-off events. [2022-11-23 01:55:09,906 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-23 01:55:09,906 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-23 01:55:09,907 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1] [2022-11-23 01:55:09,907 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 75 more)] === [2022-11-23 01:55:09,913 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 01:55:09,913 INFO L85 PathProgramCache]: Analyzing trace with hash 64753, now seen corresponding path program 1 times [2022-11-23 01:55:09,929 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-23 01:55:09,930 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [363459741] [2022-11-23 01:55:09,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 01:55:09,930 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 [2022-11-23 01:55:09,931 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0d1ed24-0d8e-49c6-9b89-5b5d95995ed5/bin/uautomizer-QkZJyEgLgS/mathsat [2022-11-23 01:55:09,940 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0d1ed24-0d8e-49c6-9b89-5b5d95995ed5/bin/uautomizer-QkZJyEgLgS/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) [2022-11-23 01:55:09,953 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0d1ed24-0d8e-49c6-9b89-5b5d95995ed5/bin/uautomizer-QkZJyEgLgS/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 [2022-11-23 01:55:10,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:55:10,083 INFO L263 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-23 01:55:10,089 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 01:55:10,479 INFO L321 Elim1Store]: treesize reduction 138, result has 28.5 percent of original size [2022-11-23 01:55:10,481 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 4 case distinctions, treesize of input 20 treesize of output 62 [2022-11-23 01:55:10,557 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 01:55:10,558 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 01:55:10,559 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-23 01:55:10,559 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [363459741] [2022-11-23 01:55:10,560 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [363459741] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 01:55:10,560 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 01:55:10,561 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-23 01:55:10,563 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1983572387] [2022-11-23 01:55:10,564 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 01:55:10,573 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 01:55:10,574 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-23 01:55:10,603 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 01:55:10,605 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 01:55:11,070 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 312 out of 852 [2022-11-23 01:55:11,075 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 82 transitions, 188 flow. Second operand has 3 states, 3 states have (on average 312.6666666666667) internal successors, (938), 3 states have internal predecessors, (938), 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) [2022-11-23 01:55:11,075 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-23 01:55:11,075 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 312 of 852 [2022-11-23 01:55:11,077 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-23 01:55:36,141 INFO L130 PetriNetUnfolder]: 110089/141191 cut-off events. [2022-11-23 01:55:36,141 INFO L131 PetriNetUnfolder]: For 658/658 co-relation queries the response was YES. [2022-11-23 01:55:36,339 INFO L83 FinitePrefix]: Finished finitePrefix Result has 285318 conditions, 141191 events. 110089/141191 cut-off events. For 658/658 co-relation queries the response was YES. Maximal size of possible extension queue 10408. Compared 830559 event pairs, 93490 based on Foata normal form. 0/26095 useless extension candidates. Maximal degree in co-relation 134484. Up to 70599 conditions per place. [2022-11-23 01:55:37,317 INFO L137 encePairwiseOnDemand]: 839/852 looper letters, 149 selfloop transitions, 8 changer transitions 0/157 dead transitions. [2022-11-23 01:55:37,318 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 157 transitions, 676 flow [2022-11-23 01:55:37,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 01:55:37,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-23 01:55:37,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1099 transitions. [2022-11-23 01:55:37,351 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.42996870109546165 [2022-11-23 01:55:37,352 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1099 transitions. [2022-11-23 01:55:37,354 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1099 transitions. [2022-11-23 01:55:37,363 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-23 01:55:37,367 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1099 transitions. [2022-11-23 01:55:37,377 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 366.3333333333333) internal successors, (1099), 3 states have internal predecessors, (1099), 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) [2022-11-23 01:55:37,394 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 852.0) internal successors, (3408), 4 states have internal predecessors, (3408), 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) [2022-11-23 01:55:37,397 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 852.0) internal successors, (3408), 4 states have internal predecessors, (3408), 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) [2022-11-23 01:55:37,400 INFO L175 Difference]: Start difference. First operand has 87 places, 82 transitions, 188 flow. Second operand 3 states and 1099 transitions. [2022-11-23 01:55:37,402 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 157 transitions, 676 flow [2022-11-23 01:55:38,002 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 157 transitions, 644 flow, removed 0 selfloop flow, removed 8 redundant places. [2022-11-23 01:55:38,007 INFO L231 Difference]: Finished difference. Result has 82 places, 88 transitions, 238 flow [2022-11-23 01:55:38,009 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=852, PETRI_DIFFERENCE_MINUEND_FLOW=170, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=238, PETRI_PLACES=82, PETRI_TRANSITIONS=88} [2022-11-23 01:55:38,014 INFO L288 CegarLoopForPetriNet]: 87 programPoint places, -5 predicate places. [2022-11-23 01:55:38,014 INFO L495 AbstractCegarLoop]: Abstraction has has 82 places, 88 transitions, 238 flow [2022-11-23 01:55:38,015 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 312.6666666666667) internal successors, (938), 3 states have internal predecessors, (938), 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) [2022-11-23 01:55:38,015 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-23 01:55:38,016 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1] [2022-11-23 01:55:38,036 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0d1ed24-0d8e-49c6-9b89-5b5d95995ed5/bin/uautomizer-QkZJyEgLgS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2022-11-23 01:55:38,236 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0d1ed24-0d8e-49c6-9b89-5b5d95995ed5/bin/uautomizer-QkZJyEgLgS/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 [2022-11-23 01:55:38,237 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 75 more)] === [2022-11-23 01:55:38,237 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 01:55:38,238 INFO L85 PathProgramCache]: Analyzing trace with hash 64752, now seen corresponding path program 1 times [2022-11-23 01:55:38,238 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-23 01:55:38,239 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2133072542] [2022-11-23 01:55:38,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 01:55:38,239 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 [2022-11-23 01:55:38,239 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0d1ed24-0d8e-49c6-9b89-5b5d95995ed5/bin/uautomizer-QkZJyEgLgS/mathsat [2022-11-23 01:55:38,244 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0d1ed24-0d8e-49c6-9b89-5b5d95995ed5/bin/uautomizer-QkZJyEgLgS/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) [2022-11-23 01:55:38,253 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0d1ed24-0d8e-49c6-9b89-5b5d95995ed5/bin/uautomizer-QkZJyEgLgS/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 [2022-11-23 01:55:38,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:55:38,374 INFO L263 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-23 01:55:38,377 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 01:55:38,620 INFO L321 Elim1Store]: treesize reduction 150, result has 29.6 percent of original size [2022-11-23 01:55:38,620 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 4 case distinctions, treesize of input 18 treesize of output 70 [2022-11-23 01:55:38,663 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 01:55:38,664 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 01:55:38,664 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-23 01:55:38,665 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2133072542] [2022-11-23 01:55:38,665 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2133072542] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 01:55:38,665 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 01:55:38,666 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-23 01:55:38,666 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [503157838] [2022-11-23 01:55:38,666 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 01:55:38,668 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 01:55:38,668 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-23 01:55:38,669 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 01:55:38,669 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 01:55:38,966 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 312 out of 852 [2022-11-23 01:55:38,968 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 88 transitions, 238 flow. Second operand has 3 states, 3 states have (on average 312.6666666666667) internal successors, (938), 3 states have internal predecessors, (938), 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) [2022-11-23 01:55:38,968 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-23 01:55:38,968 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 312 of 852 [2022-11-23 01:55:38,968 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand