./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/weaver/chl-chromosome-opt-symm.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 0e0057cc 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_413e3dd4-48a5-4ebb-ad66-43cbb546f0e0/bin/uautomizer-verify-VRDe98Ueme/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_413e3dd4-48a5-4ebb-ad66-43cbb546f0e0/bin/uautomizer-verify-VRDe98Ueme/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_413e3dd4-48a5-4ebb-ad66-43cbb546f0e0/bin/uautomizer-verify-VRDe98Ueme/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_413e3dd4-48a5-4ebb-ad66-43cbb546f0e0/bin/uautomizer-verify-VRDe98Ueme/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/weaver/chl-chromosome-opt-symm.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_413e3dd4-48a5-4ebb-ad66-43cbb546f0e0/bin/uautomizer-verify-VRDe98Ueme/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_413e3dd4-48a5-4ebb-ad66-43cbb546f0e0/bin/uautomizer-verify-VRDe98Ueme --witnessprinter.witness.filename witness --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 b034d85232772d264d33ccb960d3ce3e7bf57df858fd0c6fd0b22127388c3f9a --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-26 12:00:38,116 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-26 12:00:38,250 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_413e3dd4-48a5-4ebb-ad66-43cbb546f0e0/bin/uautomizer-verify-VRDe98Ueme/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2023-11-26 12:00:38,262 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-26 12:00:38,263 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-26 12:00:38,303 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-26 12:00:38,304 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-26 12:00:38,305 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-26 12:00:38,306 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-26 12:00:38,312 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-26 12:00:38,313 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-26 12:00:38,313 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-26 12:00:38,314 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-26 12:00:38,316 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-26 12:00:38,317 INFO L153 SettingsManager]: * Use SBE=true [2023-11-26 12:00:38,317 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-26 12:00:38,318 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-26 12:00:38,318 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-26 12:00:38,319 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-26 12:00:38,319 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-26 12:00:38,320 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-26 12:00:38,321 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-26 12:00:38,321 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-26 12:00:38,322 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-26 12:00:38,322 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-26 12:00:38,323 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-26 12:00:38,323 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-26 12:00:38,324 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-26 12:00:38,325 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-26 12:00:38,325 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-26 12:00:38,327 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-26 12:00:38,327 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-26 12:00:38,327 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-26 12:00:38,328 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-26 12:00:38,328 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-26 12:00:38,329 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-26 12:00:38,329 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-26 12:00:38,329 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-26 12:00:38,330 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-26 12:00:38,330 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-26 12:00:38,330 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-26 12:00:38,331 INFO L153 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_413e3dd4-48a5-4ebb-ad66-43cbb546f0e0/bin/uautomizer-verify-VRDe98Ueme/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_413e3dd4-48a5-4ebb-ad66-43cbb546f0e0/bin/uautomizer-verify-VRDe98Ueme Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b034d85232772d264d33ccb960d3ce3e7bf57df858fd0c6fd0b22127388c3f9a [2023-11-26 12:00:38,702 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-26 12:00:38,738 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-26 12:00:38,741 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-26 12:00:38,742 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-26 12:00:38,743 INFO L274 PluginConnector]: CDTParser initialized [2023-11-26 12:00:38,744 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_413e3dd4-48a5-4ebb-ad66-43cbb546f0e0/bin/uautomizer-verify-VRDe98Ueme/../../sv-benchmarks/c/weaver/chl-chromosome-opt-symm.wvr.c [2023-11-26 12:00:41,890 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-26 12:00:42,129 INFO L384 CDTParser]: Found 1 translation units. [2023-11-26 12:00:42,130 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_413e3dd4-48a5-4ebb-ad66-43cbb546f0e0/sv-benchmarks/c/weaver/chl-chromosome-opt-symm.wvr.c [2023-11-26 12:00:42,139 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_413e3dd4-48a5-4ebb-ad66-43cbb546f0e0/bin/uautomizer-verify-VRDe98Ueme/data/cbdb3582f/641f7d11d2d5463f8fae3cd8b6a566ad/FLAGc2004ee38 [2023-11-26 12:00:42,153 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_413e3dd4-48a5-4ebb-ad66-43cbb546f0e0/bin/uautomizer-verify-VRDe98Ueme/data/cbdb3582f/641f7d11d2d5463f8fae3cd8b6a566ad [2023-11-26 12:00:42,156 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-26 12:00:42,158 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-26 12:00:42,160 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-26 12:00:42,161 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-26 12:00:42,166 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-26 12:00:42,167 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 12:00:42" (1/1) ... [2023-11-26 12:00:42,168 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@38efe612 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:00:42, skipping insertion in model container [2023-11-26 12:00:42,168 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 12:00:42" (1/1) ... [2023-11-26 12:00:42,193 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-26 12:00:42,443 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-26 12:00:42,455 ERROR L324 MainTranslator]: Unsupported Syntax: Found a cast between two array/pointer types of different sizes while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) [2023-11-26 12:00:42,456 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@3974575b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:00:42, skipping insertion in model container [2023-11-26 12:00:42,456 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-26 12:00:42,456 INFO L186 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2023-11-26 12:00:42,458 INFO L158 Benchmark]: Toolchain (without parser) took 299.92ms. Allocated memory is still 144.7MB. Free memory was 103.5MB in the beginning and 113.8MB in the end (delta: -10.2MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2023-11-26 12:00:42,459 INFO L158 Benchmark]: CDTParser took 0.34ms. Allocated memory is still 111.1MB. Free memory is still 80.6MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-26 12:00:42,460 INFO L158 Benchmark]: CACSL2BoogieTranslator took 295.92ms. Allocated memory is still 144.7MB. Free memory was 103.1MB in the beginning and 113.8MB in the end (delta: -10.6MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2023-11-26 12:00:42,462 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.34ms. Allocated memory is still 111.1MB. Free memory is still 80.6MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 295.92ms. Allocated memory is still 144.7MB. Free memory was 103.1MB in the beginning and 113.8MB in the end (delta: -10.6MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 102]: 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_413e3dd4-48a5-4ebb-ad66-43cbb546f0e0/bin/uautomizer-verify-VRDe98Ueme/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_413e3dd4-48a5-4ebb-ad66-43cbb546f0e0/bin/uautomizer-verify-VRDe98Ueme/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_413e3dd4-48a5-4ebb-ad66-43cbb546f0e0/bin/uautomizer-verify-VRDe98Ueme/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_413e3dd4-48a5-4ebb-ad66-43cbb546f0e0/bin/uautomizer-verify-VRDe98Ueme/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/weaver/chl-chromosome-opt-symm.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_413e3dd4-48a5-4ebb-ad66-43cbb546f0e0/bin/uautomizer-verify-VRDe98Ueme/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_413e3dd4-48a5-4ebb-ad66-43cbb546f0e0/bin/uautomizer-verify-VRDe98Ueme --witnessprinter.witness.filename witness --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 b034d85232772d264d33ccb960d3ce3e7bf57df858fd0c6fd0b22127388c3f9a --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-26 12:00:45,083 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-26 12:00:45,237 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_413e3dd4-48a5-4ebb-ad66-43cbb546f0e0/bin/uautomizer-verify-VRDe98Ueme/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2023-11-26 12:00:45,246 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-26 12:00:45,247 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-26 12:00:45,288 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-26 12:00:45,289 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-26 12:00:45,289 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-26 12:00:45,291 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-26 12:00:45,296 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-26 12:00:45,296 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-26 12:00:45,297 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-26 12:00:45,298 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-26 12:00:45,299 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-26 12:00:45,300 INFO L153 SettingsManager]: * Use SBE=true [2023-11-26 12:00:45,300 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-26 12:00:45,301 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-26 12:00:45,301 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-26 12:00:45,302 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-26 12:00:45,303 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-26 12:00:45,303 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-26 12:00:45,304 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-26 12:00:45,304 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-26 12:00:45,305 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-26 12:00:45,305 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-26 12:00:45,306 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-11-26 12:00:45,306 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-11-26 12:00:45,307 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-26 12:00:45,307 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-26 12:00:45,307 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-26 12:00:45,310 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-26 12:00:45,310 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-26 12:00:45,311 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-26 12:00:45,311 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-26 12:00:45,311 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-26 12:00:45,312 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-26 12:00:45,313 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-26 12:00:45,313 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2023-11-26 12:00:45,313 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-11-26 12:00:45,314 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-26 12:00:45,314 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-26 12:00:45,314 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-26 12:00:45,315 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-26 12:00:45,315 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2023-11-26 12:00:45,315 INFO L153 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_413e3dd4-48a5-4ebb-ad66-43cbb546f0e0/bin/uautomizer-verify-VRDe98Ueme/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_413e3dd4-48a5-4ebb-ad66-43cbb546f0e0/bin/uautomizer-verify-VRDe98Ueme Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b034d85232772d264d33ccb960d3ce3e7bf57df858fd0c6fd0b22127388c3f9a [2023-11-26 12:00:45,769 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-26 12:00:45,806 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-26 12:00:45,809 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-26 12:00:45,810 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-26 12:00:45,811 INFO L274 PluginConnector]: CDTParser initialized [2023-11-26 12:00:45,812 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_413e3dd4-48a5-4ebb-ad66-43cbb546f0e0/bin/uautomizer-verify-VRDe98Ueme/../../sv-benchmarks/c/weaver/chl-chromosome-opt-symm.wvr.c [2023-11-26 12:00:48,977 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-26 12:00:49,286 INFO L384 CDTParser]: Found 1 translation units. [2023-11-26 12:00:49,287 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_413e3dd4-48a5-4ebb-ad66-43cbb546f0e0/sv-benchmarks/c/weaver/chl-chromosome-opt-symm.wvr.c [2023-11-26 12:00:49,296 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_413e3dd4-48a5-4ebb-ad66-43cbb546f0e0/bin/uautomizer-verify-VRDe98Ueme/data/eac81b224/3ee995925f584750961566da6dfc5fec/FLAG42b2fd777 [2023-11-26 12:00:49,312 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_413e3dd4-48a5-4ebb-ad66-43cbb546f0e0/bin/uautomizer-verify-VRDe98Ueme/data/eac81b224/3ee995925f584750961566da6dfc5fec [2023-11-26 12:00:49,315 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-26 12:00:49,322 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-26 12:00:49,324 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-26 12:00:49,324 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-26 12:00:49,330 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-26 12:00:49,331 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 12:00:49" (1/1) ... [2023-11-26 12:00:49,332 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6b5c8bd6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:00:49, skipping insertion in model container [2023-11-26 12:00:49,332 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 12:00:49" (1/1) ... [2023-11-26 12:00:49,363 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-26 12:00:49,635 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-26 12:00:49,666 INFO L199 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2023-11-26 12:00:49,683 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-26 12:00:49,722 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-26 12:00:49,739 INFO L202 MainTranslator]: Completed pre-run [2023-11-26 12:00:49,808 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-26 12:00:49,835 INFO L206 MainTranslator]: Completed translation [2023-11-26 12:00:49,836 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:00:49 WrapperNode [2023-11-26 12:00:49,836 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-26 12:00:49,838 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-26 12:00:49,838 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-26 12:00:49,838 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-26 12:00:49,848 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:00:49" (1/1) ... [2023-11-26 12:00:49,880 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:00:49" (1/1) ... [2023-11-26 12:00:49,935 INFO L138 Inliner]: procedures = 26, calls = 36, calls flagged for inlining = 10, calls inlined = 12, statements flattened = 179 [2023-11-26 12:00:49,935 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-26 12:00:49,936 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-26 12:00:49,936 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-26 12:00:49,936 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-26 12:00:49,952 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:00:49" (1/1) ... [2023-11-26 12:00:49,952 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:00:49" (1/1) ... [2023-11-26 12:00:49,977 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:00:49" (1/1) ... [2023-11-26 12:00:49,997 INFO L175 MemorySlicer]: Split 16 memory accesses to 4 slices as follows [2, 2, 10, 2]. 63 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0, 0]. The 4 writes are split as follows [0, 1, 2, 1]. [2023-11-26 12:00:49,998 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:00:49" (1/1) ... [2023-11-26 12:00:49,998 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:00:49" (1/1) ... [2023-11-26 12:00:50,012 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:00:49" (1/1) ... [2023-11-26 12:00:50,017 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:00:49" (1/1) ... [2023-11-26 12:00:50,020 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:00:49" (1/1) ... [2023-11-26 12:00:50,022 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:00:49" (1/1) ... [2023-11-26 12:00:50,027 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-26 12:00:50,029 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-26 12:00:50,029 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-26 12:00:50,029 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-26 12:00:50,030 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:00:49" (1/1) ... [2023-11-26 12:00:50,037 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-26 12:00:50,057 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_413e3dd4-48a5-4ebb-ad66-43cbb546f0e0/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 12:00:50,074 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_413e3dd4-48a5-4ebb-ad66-43cbb546f0e0/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-26 12:00:50,102 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_413e3dd4-48a5-4ebb-ad66-43cbb546f0e0/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-26 12:00:50,131 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-26 12:00:50,132 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2023-11-26 12:00:50,132 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#1 [2023-11-26 12:00:50,132 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#2 [2023-11-26 12:00:50,132 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#3 [2023-11-26 12:00:50,133 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-26 12:00:50,135 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#0 [2023-11-26 12:00:50,136 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#1 [2023-11-26 12:00:50,136 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#2 [2023-11-26 12:00:50,136 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#3 [2023-11-26 12:00:50,137 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-11-26 12:00:50,137 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-11-26 12:00:50,137 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-11-26 12:00:50,137 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-11-26 12:00:50,138 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-26 12:00:50,138 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-26 12:00:50,139 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-26 12:00:50,140 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-26 12:00:50,140 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#0 [2023-11-26 12:00:50,141 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#1 [2023-11-26 12:00:50,141 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#2 [2023-11-26 12:00:50,141 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#3 [2023-11-26 12:00:50,145 WARN L213 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-26 12:00:50,381 INFO L241 CfgBuilder]: Building ICFG [2023-11-26 12:00:50,384 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-26 12:00:51,094 INFO L282 CfgBuilder]: Performing block encoding [2023-11-26 12:00:51,391 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-26 12:00:51,391 INFO L309 CfgBuilder]: Removed 4 assume(true) statements. [2023-11-26 12:00:51,392 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 12:00:51 BoogieIcfgContainer [2023-11-26 12:00:51,392 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-26 12:00:51,395 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-26 12:00:51,395 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-26 12:00:51,399 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-26 12:00:51,399 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.11 12:00:49" (1/3) ... [2023-11-26 12:00:51,400 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6bd371db and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 12:00:51, skipping insertion in model container [2023-11-26 12:00:51,401 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:00:49" (2/3) ... [2023-11-26 12:00:51,401 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6bd371db and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 12:00:51, skipping insertion in model container [2023-11-26 12:00:51,401 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 12:00:51" (3/3) ... [2023-11-26 12:00:51,403 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-chromosome-opt-symm.wvr.c [2023-11-26 12:00:51,423 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-26 12:00:51,424 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 30 error locations. [2023-11-26 12:00:51,424 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-26 12:00:51,517 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-11-26 12:00:51,570 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 78 places, 79 transitions, 172 flow [2023-11-26 12:00:51,646 INFO L124 PetriNetUnfolderBase]: 8/77 cut-off events. [2023-11-26 12:00:51,647 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-11-26 12:00:51,654 INFO L83 FinitePrefix]: Finished finitePrefix Result has 86 conditions, 77 events. 8/77 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 243 event pairs, 0 based on Foata normal form. 0/39 useless extension candidates. Maximal degree in co-relation 53. Up to 2 conditions per place. [2023-11-26 12:00:51,654 INFO L82 GeneralOperation]: Start removeDead. Operand has 78 places, 79 transitions, 172 flow [2023-11-26 12:00:51,660 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 75 places, 76 transitions, 164 flow [2023-11-26 12:00:51,677 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-26 12:00:51,691 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;@629ee0a3, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-26 12:00:51,691 INFO L358 AbstractCegarLoop]: Starting to check reachability of 48 error locations. [2023-11-26 12:00:51,698 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-26 12:00:51,698 INFO L124 PetriNetUnfolderBase]: 1/4 cut-off events. [2023-11-26 12:00:51,698 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-26 12:00:51,699 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 12:00:51,700 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-11-26 12:00:51,700 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 45 more)] === [2023-11-26 12:00:51,723 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:00:51,723 INFO L85 PathProgramCache]: Analyzing trace with hash 553917, now seen corresponding path program 1 times [2023-11-26 12:00:51,737 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-26 12:00:51,738 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1844066690] [2023-11-26 12:00:51,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:00:51,739 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-26 12:00:51,739 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_413e3dd4-48a5-4ebb-ad66-43cbb546f0e0/bin/uautomizer-verify-VRDe98Ueme/mathsat [2023-11-26 12:00:51,742 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_413e3dd4-48a5-4ebb-ad66-43cbb546f0e0/bin/uautomizer-verify-VRDe98Ueme/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-26 12:00:51,746 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_413e3dd4-48a5-4ebb-ad66-43cbb546f0e0/bin/uautomizer-verify-VRDe98Ueme/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2023-11-26 12:00:51,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:00:51,859 INFO L262 TraceCheckSpWp]: Trace formula consists of 46 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-26 12:00:51,864 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 12:00:51,965 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2023-11-26 12:00:51,988 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-26 12:00:51,989 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-26 12:00:52,010 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-26 12:00:52,011 INFO L378 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 0 case distinctions, treesize of input 6 treesize of output 1 [2023-11-26 12:00:52,027 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-26 12:00:52,028 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-26 12:00:52,050 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-26 12:00:52,051 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-26 12:00:52,071 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-26 12:00:52,073 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 1 [2023-11-26 12:00:52,083 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 12:00:52,084 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 12:00:52,085 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-26 12:00:52,086 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1844066690] [2023-11-26 12:00:52,088 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1844066690] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 12:00:52,088 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 12:00:52,088 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-26 12:00:52,090 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [694231221] [2023-11-26 12:00:52,091 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 12:00:52,100 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 12:00:52,107 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-26 12:00:52,139 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 12:00:52,140 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 12:00:52,320 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 45 out of 79 [2023-11-26 12:00:52,324 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 76 transitions, 164 flow. Second operand has 3 states, 3 states have (on average 46.0) internal successors, (138), 3 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:00:52,324 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 12:00:52,324 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 45 of 79 [2023-11-26 12:00:52,325 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 12:00:52,621 INFO L124 PetriNetUnfolderBase]: 183/470 cut-off events. [2023-11-26 12:00:52,621 INFO L125 PetriNetUnfolderBase]: For 26/26 co-relation queries the response was YES. [2023-11-26 12:00:52,626 INFO L83 FinitePrefix]: Finished finitePrefix Result has 775 conditions, 470 events. 183/470 cut-off events. For 26/26 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 2554 event pairs, 100 based on Foata normal form. 1/324 useless extension candidates. Maximal degree in co-relation 691. Up to 275 conditions per place. [2023-11-26 12:00:52,633 INFO L140 encePairwiseOnDemand]: 74/79 looper letters, 28 selfloop transitions, 2 changer transitions 0/72 dead transitions. [2023-11-26 12:00:52,633 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 72 transitions, 216 flow [2023-11-26 12:00:52,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 12:00:52,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-26 12:00:52,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 168 transitions. [2023-11-26 12:00:52,651 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7088607594936709 [2023-11-26 12:00:52,652 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 168 transitions. [2023-11-26 12:00:52,653 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 168 transitions. [2023-11-26 12:00:52,654 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 12:00:52,657 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 168 transitions. [2023-11-26 12:00:52,661 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 56.0) internal successors, (168), 3 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:00:52,666 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 79.0) internal successors, (316), 4 states have internal predecessors, (316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:00:52,667 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 79.0) internal successors, (316), 4 states have internal predecessors, (316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:00:52,669 INFO L175 Difference]: Start difference. First operand has 75 places, 76 transitions, 164 flow. Second operand 3 states and 168 transitions. [2023-11-26 12:00:52,671 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 72 transitions, 216 flow [2023-11-26 12:00:52,675 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 72 transitions, 208 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-11-26 12:00:52,679 INFO L231 Difference]: Finished difference. Result has 69 places, 72 transitions, 152 flow [2023-11-26 12:00:52,681 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=79, PETRI_DIFFERENCE_MINUEND_FLOW=148, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=152, PETRI_PLACES=69, PETRI_TRANSITIONS=72} [2023-11-26 12:00:52,685 INFO L281 CegarLoopForPetriNet]: 75 programPoint places, -6 predicate places. [2023-11-26 12:00:52,686 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 72 transitions, 152 flow [2023-11-26 12:00:52,686 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 46.0) internal successors, (138), 3 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:00:52,687 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 12:00:52,687 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-11-26 12:00:52,693 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_413e3dd4-48a5-4ebb-ad66-43cbb546f0e0/bin/uautomizer-verify-VRDe98Ueme/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Ended with exit code 0 [2023-11-26 12:00:52,893 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_413e3dd4-48a5-4ebb-ad66-43cbb546f0e0/bin/uautomizer-verify-VRDe98Ueme/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-26 12:00:52,894 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 45 more)] === [2023-11-26 12:00:52,894 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:00:52,894 INFO L85 PathProgramCache]: Analyzing trace with hash 553918, now seen corresponding path program 1 times [2023-11-26 12:00:52,895 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-26 12:00:52,895 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [778171030] [2023-11-26 12:00:52,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:00:52,896 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-26 12:00:52,896 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_413e3dd4-48a5-4ebb-ad66-43cbb546f0e0/bin/uautomizer-verify-VRDe98Ueme/mathsat [2023-11-26 12:00:52,897 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_413e3dd4-48a5-4ebb-ad66-43cbb546f0e0/bin/uautomizer-verify-VRDe98Ueme/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-26 12:00:52,900 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_413e3dd4-48a5-4ebb-ad66-43cbb546f0e0/bin/uautomizer-verify-VRDe98Ueme/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2023-11-26 12:00:53,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:00:53,028 INFO L262 TraceCheckSpWp]: Trace formula consists of 46 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-26 12:00:53,030 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 12:00:53,071 INFO L378 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 0 case distinctions, treesize of input 16 treesize of output 5 [2023-11-26 12:00:53,100 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-26 12:00:53,102 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-26 12:00:53,118 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-26 12:00:53,120 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-26 12:00:53,145 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-26 12:00:53,147 INFO L378 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 0 case distinctions, treesize of input 6 treesize of output 1 [2023-11-26 12:00:53,162 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-26 12:00:53,163 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-26 12:00:53,172 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-26 12:00:53,173 INFO L378 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 0 case distinctions, treesize of input 6 treesize of output 1 [2023-11-26 12:00:53,212 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 12:00:53,212 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 12:00:53,213 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-26 12:00:53,222 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [778171030] [2023-11-26 12:00:53,222 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [778171030] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 12:00:53,223 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 12:00:53,223 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-26 12:00:53,224 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1989942734] [2023-11-26 12:00:53,227 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 12:00:53,230 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 12:00:53,230 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-26 12:00:53,231 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 12:00:53,231 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 12:00:53,463 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 45 out of 79 [2023-11-26 12:00:53,464 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 72 transitions, 152 flow. Second operand has 3 states, 3 states have (on average 46.0) internal successors, (138), 3 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:00:53,464 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 12:00:53,464 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 45 of 79 [2023-11-26 12:00:53,464 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 12:00:53,732 INFO L124 PetriNetUnfolderBase]: 185/476 cut-off events. [2023-11-26 12:00:53,732 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2023-11-26 12:00:53,737 INFO L83 FinitePrefix]: Finished finitePrefix Result has 777 conditions, 476 events. 185/476 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 2581 event pairs, 100 based on Foata normal form. 0/327 useless extension candidates. Maximal degree in co-relation 741. Up to 284 conditions per place. [2023-11-26 12:00:53,768 INFO L140 encePairwiseOnDemand]: 72/79 looper letters, 33 selfloop transitions, 5 changer transitions 0/78 dead transitions. [2023-11-26 12:00:53,768 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 78 transitions, 242 flow [2023-11-26 12:00:53,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 12:00:53,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-26 12:00:53,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 175 transitions. [2023-11-26 12:00:53,776 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7383966244725738 [2023-11-26 12:00:53,776 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 175 transitions. [2023-11-26 12:00:53,776 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 175 transitions. [2023-11-26 12:00:53,779 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 12:00:53,779 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 175 transitions. [2023-11-26 12:00:53,782 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 58.333333333333336) internal successors, (175), 3 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:00:53,784 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 79.0) internal successors, (316), 4 states have internal predecessors, (316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:00:53,784 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 79.0) internal successors, (316), 4 states have internal predecessors, (316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:00:53,784 INFO L175 Difference]: Start difference. First operand has 69 places, 72 transitions, 152 flow. Second operand 3 states and 175 transitions. [2023-11-26 12:00:53,785 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 78 transitions, 242 flow [2023-11-26 12:00:53,786 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 78 transitions, 236 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-26 12:00:53,789 INFO L231 Difference]: Finished difference. Result has 71 places, 76 transitions, 188 flow [2023-11-26 12:00:53,790 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=79, PETRI_DIFFERENCE_MINUEND_FLOW=148, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=188, PETRI_PLACES=71, PETRI_TRANSITIONS=76} [2023-11-26 12:00:53,790 INFO L281 CegarLoopForPetriNet]: 75 programPoint places, -4 predicate places. [2023-11-26 12:00:53,791 INFO L495 AbstractCegarLoop]: Abstraction has has 71 places, 76 transitions, 188 flow [2023-11-26 12:00:53,791 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 46.0) internal successors, (138), 3 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:00:53,791 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 12:00:53,791 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-11-26 12:00:53,794 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_413e3dd4-48a5-4ebb-ad66-43cbb546f0e0/bin/uautomizer-verify-VRDe98Ueme/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Ended with exit code 0 [2023-11-26 12:00:53,993 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_413e3dd4-48a5-4ebb-ad66-43cbb546f0e0/bin/uautomizer-verify-VRDe98Ueme/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-26 12:00:53,994 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 45 more)] === [2023-11-26 12:00:53,994 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:00:53,994 INFO L85 PathProgramCache]: Analyzing trace with hash 17172704, now seen corresponding path program 1 times [2023-11-26 12:00:53,995 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-26 12:00:53,995 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [389171803] [2023-11-26 12:00:53,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:00:53,995 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-26 12:00:53,995 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_413e3dd4-48a5-4ebb-ad66-43cbb546f0e0/bin/uautomizer-verify-VRDe98Ueme/mathsat [2023-11-26 12:00:53,996 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_413e3dd4-48a5-4ebb-ad66-43cbb546f0e0/bin/uautomizer-verify-VRDe98Ueme/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-26 12:00:54,003 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_413e3dd4-48a5-4ebb-ad66-43cbb546f0e0/bin/uautomizer-verify-VRDe98Ueme/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2023-11-26 12:00:54,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:00:54,077 INFO L262 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-26 12:00:54,078 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 12:00:54,097 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 12:00:54,097 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 12:00:54,097 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-26 12:00:54,097 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [389171803] [2023-11-26 12:00:54,098 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [389171803] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 12:00:54,098 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 12:00:54,098 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-26 12:00:54,098 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1282822600] [2023-11-26 12:00:54,099 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 12:00:54,099 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 12:00:54,099 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-26 12:00:54,100 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 12:00:54,100 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 12:00:54,130 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 47 out of 79 [2023-11-26 12:00:54,132 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 76 transitions, 188 flow. Second operand has 3 states, 3 states have (on average 48.0) internal successors, (144), 3 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:00:54,132 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 12:00:54,133 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 47 of 79 [2023-11-26 12:00:54,133 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 12:00:54,340 INFO L124 PetriNetUnfolderBase]: 183/474 cut-off events. [2023-11-26 12:00:54,340 INFO L125 PetriNetUnfolderBase]: For 8/8 co-relation queries the response was YES. [2023-11-26 12:00:54,342 INFO L83 FinitePrefix]: Finished finitePrefix Result has 782 conditions, 474 events. 183/474 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 2562 event pairs, 100 based on Foata normal form. 2/331 useless extension candidates. Maximal degree in co-relation 751. Up to 281 conditions per place. [2023-11-26 12:00:54,347 INFO L140 encePairwiseOnDemand]: 74/79 looper letters, 30 selfloop transitions, 4 changer transitions 0/76 dead transitions. [2023-11-26 12:00:54,347 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 76 transitions, 250 flow [2023-11-26 12:00:54,348 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 12:00:54,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-26 12:00:54,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 177 transitions. [2023-11-26 12:00:54,351 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7468354430379747 [2023-11-26 12:00:54,351 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 177 transitions. [2023-11-26 12:00:54,351 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 177 transitions. [2023-11-26 12:00:54,351 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 12:00:54,352 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 177 transitions. [2023-11-26 12:00:54,353 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 59.0) internal successors, (177), 3 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:00:54,355 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 79.0) internal successors, (316), 4 states have internal predecessors, (316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:00:54,356 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 79.0) internal successors, (316), 4 states have internal predecessors, (316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:00:54,356 INFO L175 Difference]: Start difference. First operand has 71 places, 76 transitions, 188 flow. Second operand 3 states and 177 transitions. [2023-11-26 12:00:54,356 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 76 transitions, 250 flow [2023-11-26 12:00:54,358 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 76 transitions, 242 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-26 12:00:54,360 INFO L231 Difference]: Finished difference. Result has 71 places, 74 transitions, 178 flow [2023-11-26 12:00:54,360 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=79, PETRI_DIFFERENCE_MINUEND_FLOW=170, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=178, PETRI_PLACES=71, PETRI_TRANSITIONS=74} [2023-11-26 12:00:54,362 INFO L281 CegarLoopForPetriNet]: 75 programPoint places, -4 predicate places. [2023-11-26 12:00:54,362 INFO L495 AbstractCegarLoop]: Abstraction has has 71 places, 74 transitions, 178 flow [2023-11-26 12:00:54,362 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 48.0) internal successors, (144), 3 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:00:54,363 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 12:00:54,363 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1] [2023-11-26 12:00:54,371 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_413e3dd4-48a5-4ebb-ad66-43cbb546f0e0/bin/uautomizer-verify-VRDe98Ueme/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2023-11-26 12:00:54,565 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_413e3dd4-48a5-4ebb-ad66-43cbb546f0e0/bin/uautomizer-verify-VRDe98Ueme/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-26 12:00:54,566 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 45 more)] === [2023-11-26 12:00:54,566 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:00:54,566 INFO L85 PathProgramCache]: Analyzing trace with hash 532332878, now seen corresponding path program 1 times [2023-11-26 12:00:54,567 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-26 12:00:54,567 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1832069011] [2023-11-26 12:00:54,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:00:54,567 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-26 12:00:54,567 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_413e3dd4-48a5-4ebb-ad66-43cbb546f0e0/bin/uautomizer-verify-VRDe98Ueme/mathsat [2023-11-26 12:00:54,569 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_413e3dd4-48a5-4ebb-ad66-43cbb546f0e0/bin/uautomizer-verify-VRDe98Ueme/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-26 12:00:54,576 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_413e3dd4-48a5-4ebb-ad66-43cbb546f0e0/bin/uautomizer-verify-VRDe98Ueme/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2023-11-26 12:00:54,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:00:54,668 INFO L262 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-26 12:00:54,669 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 12:00:54,693 INFO L378 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 0 case distinctions, treesize of input 11 treesize of output 5 [2023-11-26 12:00:54,703 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-26 12:00:54,704 INFO L378 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 0 case distinctions, treesize of input 6 treesize of output 1 [2023-11-26 12:00:54,712 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-26 12:00:54,713 INFO L378 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 0 case distinctions, treesize of input 6 treesize of output 1 [2023-11-26 12:00:54,722 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-26 12:00:54,723 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-26 12:00:54,736 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-26 12:00:54,737 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-26 12:00:54,756 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-26 12:00:54,756 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 1 [2023-11-26 12:00:54,835 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 12:00:54,835 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-26 12:00:55,036 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 12:00:55,036 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-26 12:00:55,037 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1832069011] [2023-11-26 12:00:55,037 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1832069011] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-26 12:00:55,037 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-26 12:00:55,037 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2] total 4 [2023-11-26 12:00:55,037 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [105466937] [2023-11-26 12:00:55,038 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-26 12:00:55,038 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-26 12:00:55,038 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-26 12:00:55,039 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-26 12:00:55,039 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-11-26 12:00:56,317 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 45 out of 79 [2023-11-26 12:00:56,318 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 74 transitions, 178 flow. Second operand has 6 states, 6 states have (on average 46.666666666666664) internal successors, (280), 6 states have internal predecessors, (280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:00:56,318 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 12:00:56,319 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 45 of 79 [2023-11-26 12:00:56,319 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 12:00:57,787 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.11s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-26 12:00:58,145 INFO L124 PetriNetUnfolderBase]: 189/492 cut-off events. [2023-11-26 12:00:58,145 INFO L125 PetriNetUnfolderBase]: For 8/8 co-relation queries the response was YES. [2023-11-26 12:00:58,147 INFO L83 FinitePrefix]: Finished finitePrefix Result has 835 conditions, 492 events. 189/492 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 2631 event pairs, 100 based on Foata normal form. 0/345 useless extension candidates. Maximal degree in co-relation 776. Up to 286 conditions per place. [2023-11-26 12:00:58,151 INFO L140 encePairwiseOnDemand]: 72/79 looper letters, 38 selfloop transitions, 16 changer transitions 0/94 dead transitions. [2023-11-26 12:00:58,151 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 94 transitions, 356 flow [2023-11-26 12:00:58,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-26 12:00:58,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-26 12:00:58,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 330 transitions. [2023-11-26 12:00:58,154 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6962025316455697 [2023-11-26 12:00:58,154 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 330 transitions. [2023-11-26 12:00:58,154 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 330 transitions. [2023-11-26 12:00:58,155 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 12:00:58,155 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 330 transitions. [2023-11-26 12:00:58,156 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 55.0) internal successors, (330), 6 states have internal predecessors, (330), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:00:58,158 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 79.0) internal successors, (553), 7 states have internal predecessors, (553), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:00:58,159 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 79.0) internal successors, (553), 7 states have internal predecessors, (553), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:00:58,159 INFO L175 Difference]: Start difference. First operand has 71 places, 74 transitions, 178 flow. Second operand 6 states and 330 transitions. [2023-11-26 12:00:58,159 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 94 transitions, 356 flow [2023-11-26 12:00:58,161 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 94 transitions, 342 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-26 12:00:58,163 INFO L231 Difference]: Finished difference. Result has 77 places, 86 transitions, 286 flow [2023-11-26 12:00:58,163 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=79, PETRI_DIFFERENCE_MINUEND_FLOW=170, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=286, PETRI_PLACES=77, PETRI_TRANSITIONS=86} [2023-11-26 12:00:58,164 INFO L281 CegarLoopForPetriNet]: 75 programPoint places, 2 predicate places. [2023-11-26 12:00:58,165 INFO L495 AbstractCegarLoop]: Abstraction has has 77 places, 86 transitions, 286 flow [2023-11-26 12:00:58,165 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 46.666666666666664) internal successors, (280), 6 states have internal predecessors, (280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:00:58,165 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 12:00:58,165 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 12:00:58,173 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_413e3dd4-48a5-4ebb-ad66-43cbb546f0e0/bin/uautomizer-verify-VRDe98Ueme/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2023-11-26 12:00:58,367 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_413e3dd4-48a5-4ebb-ad66-43cbb546f0e0/bin/uautomizer-verify-VRDe98Ueme/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-26 12:00:58,368 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 45 more)] === [2023-11-26 12:00:58,368 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:00:58,368 INFO L85 PathProgramCache]: Analyzing trace with hash 1710709667, now seen corresponding path program 1 times [2023-11-26 12:00:58,369 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-26 12:00:58,369 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [473328586] [2023-11-26 12:00:58,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:00:58,369 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-26 12:00:58,369 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_413e3dd4-48a5-4ebb-ad66-43cbb546f0e0/bin/uautomizer-verify-VRDe98Ueme/mathsat [2023-11-26 12:00:58,370 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_413e3dd4-48a5-4ebb-ad66-43cbb546f0e0/bin/uautomizer-verify-VRDe98Ueme/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-26 12:00:58,376 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_413e3dd4-48a5-4ebb-ad66-43cbb546f0e0/bin/uautomizer-verify-VRDe98Ueme/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2023-11-26 12:00:58,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:00:58,468 INFO L262 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-26 12:00:58,470 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 12:00:58,524 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-26 12:00:58,524 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-26 12:00:58,567 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-26 12:00:58,567 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-26 12:00:58,567 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [473328586] [2023-11-26 12:00:58,567 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [473328586] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-26 12:00:58,568 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-26 12:00:58,568 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 5 [2023-11-26 12:00:58,568 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [49529624] [2023-11-26 12:00:58,568 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-26 12:00:58,568 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-26 12:00:58,568 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-26 12:00:58,569 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-26 12:00:58,569 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-11-26 12:00:58,628 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 47 out of 79 [2023-11-26 12:00:58,629 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 86 transitions, 286 flow. Second operand has 6 states, 6 states have (on average 48.833333333333336) internal successors, (293), 6 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:00:58,629 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 12:00:58,629 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 47 of 79 [2023-11-26 12:00:58,630 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 12:00:59,055 INFO L124 PetriNetUnfolderBase]: 183/486 cut-off events. [2023-11-26 12:00:59,055 INFO L125 PetriNetUnfolderBase]: For 40/40 co-relation queries the response was YES. [2023-11-26 12:00:59,056 INFO L83 FinitePrefix]: Finished finitePrefix Result has 836 conditions, 486 events. 183/486 cut-off events. For 40/40 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 2554 event pairs, 100 based on Foata normal form. 6/347 useless extension candidates. Maximal degree in co-relation 765. Up to 279 conditions per place. [2023-11-26 12:00:59,060 INFO L140 encePairwiseOnDemand]: 72/79 looper letters, 32 selfloop transitions, 14 changer transitions 0/88 dead transitions. [2023-11-26 12:00:59,061 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 88 transitions, 352 flow [2023-11-26 12:00:59,061 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-26 12:00:59,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-26 12:00:59,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 332 transitions. [2023-11-26 12:00:59,064 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.70042194092827 [2023-11-26 12:00:59,064 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 332 transitions. [2023-11-26 12:00:59,064 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 332 transitions. [2023-11-26 12:00:59,064 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 12:00:59,064 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 332 transitions. [2023-11-26 12:00:59,066 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 55.333333333333336) internal successors, (332), 6 states have internal predecessors, (332), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:00:59,067 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 79.0) internal successors, (553), 7 states have internal predecessors, (553), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:00:59,068 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 79.0) internal successors, (553), 7 states have internal predecessors, (553), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:00:59,068 INFO L175 Difference]: Start difference. First operand has 77 places, 86 transitions, 286 flow. Second operand 6 states and 332 transitions. [2023-11-26 12:00:59,069 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 88 transitions, 352 flow [2023-11-26 12:00:59,071 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 88 transitions, 336 flow, removed 6 selfloop flow, removed 1 redundant places. [2023-11-26 12:00:59,074 INFO L231 Difference]: Finished difference. Result has 82 places, 82 transitions, 272 flow [2023-11-26 12:00:59,074 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=79, PETRI_DIFFERENCE_MINUEND_FLOW=228, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=272, PETRI_PLACES=82, PETRI_TRANSITIONS=82} [2023-11-26 12:00:59,075 INFO L281 CegarLoopForPetriNet]: 75 programPoint places, 7 predicate places. [2023-11-26 12:00:59,076 INFO L495 AbstractCegarLoop]: Abstraction has has 82 places, 82 transitions, 272 flow [2023-11-26 12:00:59,076 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 48.833333333333336) internal successors, (293), 6 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:00:59,076 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 12:00:59,076 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 4, 1, 1] [2023-11-26 12:00:59,079 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_413e3dd4-48a5-4ebb-ad66-43cbb546f0e0/bin/uautomizer-verify-VRDe98Ueme/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 [2023-11-26 12:00:59,279 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_413e3dd4-48a5-4ebb-ad66-43cbb546f0e0/bin/uautomizer-verify-VRDe98Ueme/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-26 12:00:59,279 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 45 more)] === [2023-11-26 12:00:59,280 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:00:59,280 INFO L85 PathProgramCache]: Analyzing trace with hash 1799803390, now seen corresponding path program 2 times [2023-11-26 12:00:59,280 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-26 12:00:59,280 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1014225201] [2023-11-26 12:00:59,281 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-26 12:00:59,281 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-26 12:00:59,281 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_413e3dd4-48a5-4ebb-ad66-43cbb546f0e0/bin/uautomizer-verify-VRDe98Ueme/mathsat [2023-11-26 12:00:59,283 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_413e3dd4-48a5-4ebb-ad66-43cbb546f0e0/bin/uautomizer-verify-VRDe98Ueme/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-26 12:00:59,316 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_413e3dd4-48a5-4ebb-ad66-43cbb546f0e0/bin/uautomizer-verify-VRDe98Ueme/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2023-11-26 12:00:59,402 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-26 12:00:59,403 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-26 12:00:59,407 INFO L262 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 13 conjunts are in the unsatisfiable core [2023-11-26 12:00:59,409 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 12:00:59,445 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-11-26 12:00:59,458 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-26 12:00:59,461 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-26 12:00:59,473 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-26 12:00:59,474 INFO L378 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 0 case distinctions, treesize of input 6 treesize of output 1 [2023-11-26 12:00:59,484 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-26 12:00:59,488 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-26 12:00:59,537 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-26 12:00:59,538 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 1 [2023-11-26 12:00:59,561 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-26 12:00:59,562 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-26 12:00:59,869 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 12:00:59,869 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-26 12:01:00,911 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 12:01:00,911 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-26 12:01:00,912 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1014225201] [2023-11-26 12:01:00,912 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1014225201] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-26 12:01:00,912 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-26 12:01:00,912 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 12 [2023-11-26 12:01:00,912 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [581053622] [2023-11-26 12:01:00,912 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-26 12:01:00,913 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-11-26 12:01:00,913 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-26 12:01:00,914 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-11-26 12:01:00,914 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=123, Unknown=0, NotChecked=0, Total=182 [2023-11-26 12:01:05,598 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 45 out of 79 [2023-11-26 12:01:05,599 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 82 transitions, 272 flow. Second operand has 14 states, 14 states have (on average 46.57142857142857) internal successors, (652), 14 states have internal predecessors, (652), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:01:05,600 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 12:01:05,600 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 45 of 79 [2023-11-26 12:01:05,600 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 12:01:11,713 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.30s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-26 12:01:15,716 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-26 12:01:17,223 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.48s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-26 12:01:20,121 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.90s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-26 12:01:24,060 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.41s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-26 12:01:26,846 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.79s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-26 12:01:28,724 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.52s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-26 12:01:29,800 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.08s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-26 12:01:31,444 INFO L124 PetriNetUnfolderBase]: 193/521 cut-off events. [2023-11-26 12:01:31,444 INFO L125 PetriNetUnfolderBase]: For 124/124 co-relation queries the response was YES. [2023-11-26 12:01:31,446 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1016 conditions, 521 events. 193/521 cut-off events. For 124/124 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 2680 event pairs, 100 based on Foata normal form. 13/389 useless extension candidates. Maximal degree in co-relation 844. Up to 288 conditions per place. [2023-11-26 12:01:31,449 INFO L140 encePairwiseOnDemand]: 70/79 looper letters, 42 selfloop transitions, 41 changer transitions 0/123 dead transitions. [2023-11-26 12:01:31,450 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 123 transitions, 710 flow [2023-11-26 12:01:31,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-11-26 12:01:31,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2023-11-26 12:01:31,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 996 transitions. [2023-11-26 12:01:31,455 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6303797468354431 [2023-11-26 12:01:31,455 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 996 transitions. [2023-11-26 12:01:31,455 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 996 transitions. [2023-11-26 12:01:31,456 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 12:01:31,457 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 996 transitions. [2023-11-26 12:01:31,461 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 49.8) internal successors, (996), 20 states have internal predecessors, (996), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:01:31,466 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 79.0) internal successors, (1659), 21 states have internal predecessors, (1659), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:01:31,467 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 79.0) internal successors, (1659), 21 states have internal predecessors, (1659), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:01:31,467 INFO L175 Difference]: Start difference. First operand has 82 places, 82 transitions, 272 flow. Second operand 20 states and 996 transitions. [2023-11-26 12:01:31,467 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 101 places, 123 transitions, 710 flow [2023-11-26 12:01:31,471 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 123 transitions, 693 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-11-26 12:01:31,475 INFO L231 Difference]: Finished difference. Result has 105 places, 116 transitions, 635 flow [2023-11-26 12:01:31,475 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=79, PETRI_DIFFERENCE_MINUEND_FLOW=260, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=635, PETRI_PLACES=105, PETRI_TRANSITIONS=116} [2023-11-26 12:01:31,476 INFO L281 CegarLoopForPetriNet]: 75 programPoint places, 30 predicate places. [2023-11-26 12:01:31,476 INFO L495 AbstractCegarLoop]: Abstraction has has 105 places, 116 transitions, 635 flow [2023-11-26 12:01:31,477 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 46.57142857142857) internal successors, (652), 14 states have internal predecessors, (652), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:01:31,477 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 12:01:31,477 INFO L208 CegarLoopForPetriNet]: trace histogram [11, 10, 1, 1] [2023-11-26 12:01:31,485 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_413e3dd4-48a5-4ebb-ad66-43cbb546f0e0/bin/uautomizer-verify-VRDe98Ueme/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Ended with exit code 0 [2023-11-26 12:01:31,680 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_413e3dd4-48a5-4ebb-ad66-43cbb546f0e0/bin/uautomizer-verify-VRDe98Ueme/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-26 12:01:31,680 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 45 more)] === [2023-11-26 12:01:31,681 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:01:31,681 INFO L85 PathProgramCache]: Analyzing trace with hash 601368414, now seen corresponding path program 3 times [2023-11-26 12:01:31,681 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-26 12:01:31,681 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1213509961] [2023-11-26 12:01:31,681 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-26 12:01:31,681 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-26 12:01:31,681 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_413e3dd4-48a5-4ebb-ad66-43cbb546f0e0/bin/uautomizer-verify-VRDe98Ueme/mathsat [2023-11-26 12:01:31,682 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_413e3dd4-48a5-4ebb-ad66-43cbb546f0e0/bin/uautomizer-verify-VRDe98Ueme/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-26 12:01:31,684 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_413e3dd4-48a5-4ebb-ad66-43cbb546f0e0/bin/uautomizer-verify-VRDe98Ueme/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2023-11-26 12:01:31,987 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2023-11-26 12:01:31,987 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-26 12:01:31,996 INFO L262 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 17 conjunts are in the unsatisfiable core [2023-11-26 12:01:31,999 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 12:01:32,018 INFO L378 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 0 case distinctions, treesize of input 11 treesize of output 5 [2023-11-26 12:01:32,028 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-26 12:01:32,029 INFO L378 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 0 case distinctions, treesize of input 6 treesize of output 1 [2023-11-26 12:01:32,037 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-26 12:01:32,037 INFO L378 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 0 case distinctions, treesize of input 6 treesize of output 1 [2023-11-26 12:01:32,046 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-26 12:01:32,046 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-26 12:01:32,069 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-26 12:01:32,069 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 1 [2023-11-26 12:01:32,079 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-26 12:01:32,080 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-26 12:01:32,514 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 20 proven. 90 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 12:01:32,514 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-26 12:01:34,803 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 20 proven. 90 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 12:01:34,803 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-26 12:01:34,804 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1213509961] [2023-11-26 12:01:34,804 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1213509961] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-26 12:01:34,804 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-26 12:01:34,804 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 21 [2023-11-26 12:01:34,804 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [948101108] [2023-11-26 12:01:34,804 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-26 12:01:34,805 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2023-11-26 12:01:34,805 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-26 12:01:34,806 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2023-11-26 12:01:34,806 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=126, Invalid=336, Unknown=0, NotChecked=0, Total=462