./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/ldv-memsafety/memleaks_test6.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_529e1300-3e22-4609-a8ef-a8f5dddd66f7/bin/uautomizer-verify-VRDe98Ueme/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_529e1300-3e22-4609-a8ef-a8f5dddd66f7/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_529e1300-3e22-4609-a8ef-a8f5dddd66f7/bin/uautomizer-verify-VRDe98Ueme/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_529e1300-3e22-4609-a8ef-a8f5dddd66f7/bin/uautomizer-verify-VRDe98Ueme/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/ldv-memsafety/memleaks_test6.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_529e1300-3e22-4609-a8ef-a8f5dddd66f7/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_529e1300-3e22-4609-a8ef-a8f5dddd66f7/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 3ed2f79dd7eb34d7f468c81f6f234938dec012581166f8f07d8a0cec95998c6d --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-26 11:50:30,117 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-26 11:50:30,234 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_529e1300-3e22-4609-a8ef-a8f5dddd66f7/bin/uautomizer-verify-VRDe98Ueme/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2023-11-26 11:50:30,241 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-26 11:50:30,242 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-26 11:50:30,290 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-26 11:50:30,292 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-26 11:50:30,293 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-26 11:50:30,294 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-26 11:50:30,300 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-26 11:50:30,301 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-26 11:50:30,301 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-26 11:50:30,302 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-26 11:50:30,304 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-26 11:50:30,305 INFO L153 SettingsManager]: * Use SBE=true [2023-11-26 11:50:30,305 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-26 11:50:30,306 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-26 11:50:30,306 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-26 11:50:30,307 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-26 11:50:30,307 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-26 11:50:30,308 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-26 11:50:30,309 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-26 11:50:30,309 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-26 11:50:30,310 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-26 11:50:30,310 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-26 11:50:30,311 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-26 11:50:30,311 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-26 11:50:30,312 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-26 11:50:30,313 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-26 11:50:30,313 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-26 11:50:30,315 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-26 11:50:30,315 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-26 11:50:30,316 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-26 11:50:30,316 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-26 11:50:30,316 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-26 11:50:30,317 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-26 11:50:30,317 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-26 11:50:30,317 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-26 11:50:30,318 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-26 11:50:30,318 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-26 11:50:30,318 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-26 11:50:30,319 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_529e1300-3e22-4609-a8ef-a8f5dddd66f7/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_529e1300-3e22-4609-a8ef-a8f5dddd66f7/bin/uautomizer-verify-VRDe98Ueme Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3ed2f79dd7eb34d7f468c81f6f234938dec012581166f8f07d8a0cec95998c6d [2023-11-26 11:50:30,677 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-26 11:50:30,716 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-26 11:50:30,719 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-26 11:50:30,721 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-26 11:50:30,722 INFO L274 PluginConnector]: CDTParser initialized [2023-11-26 11:50:30,723 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_529e1300-3e22-4609-a8ef-a8f5dddd66f7/bin/uautomizer-verify-VRDe98Ueme/../../sv-benchmarks/c/ldv-memsafety/memleaks_test6.i [2023-11-26 11:50:34,410 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-26 11:50:34,766 INFO L384 CDTParser]: Found 1 translation units. [2023-11-26 11:50:34,767 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_529e1300-3e22-4609-a8ef-a8f5dddd66f7/sv-benchmarks/c/ldv-memsafety/memleaks_test6.i [2023-11-26 11:50:34,786 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_529e1300-3e22-4609-a8ef-a8f5dddd66f7/bin/uautomizer-verify-VRDe98Ueme/data/91d8fe857/d0c26d0642b0446f81af9e0590f82b76/FLAG1080e11d9 [2023-11-26 11:50:34,800 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_529e1300-3e22-4609-a8ef-a8f5dddd66f7/bin/uautomizer-verify-VRDe98Ueme/data/91d8fe857/d0c26d0642b0446f81af9e0590f82b76 [2023-11-26 11:50:34,803 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-26 11:50:34,804 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-26 11:50:34,806 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-26 11:50:34,806 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-26 11:50:34,811 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-26 11:50:34,812 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 11:50:34" (1/1) ... [2023-11-26 11:50:34,813 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@e580d3d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:50:34, skipping insertion in model container [2023-11-26 11:50:34,814 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 11:50:34" (1/1) ... [2023-11-26 11:50:34,868 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-26 11:50:35,355 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-26 11:50:35,379 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 11:50:35,380 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@3ed83030 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:50:35, skipping insertion in model container [2023-11-26 11:50:35,380 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-26 11:50:35,380 INFO L186 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2023-11-26 11:50:35,382 INFO L158 Benchmark]: Toolchain (without parser) took 577.10ms. Allocated memory is still 123.7MB. Free memory was 76.6MB in the beginning and 62.7MB in the end (delta: 13.9MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2023-11-26 11:50:35,383 INFO L158 Benchmark]: CDTParser took 0.36ms. Allocated memory is still 123.7MB. Free memory is still 69.6MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-26 11:50:35,384 INFO L158 Benchmark]: CACSL2BoogieTranslator took 574.57ms. Allocated memory is still 123.7MB. Free memory was 76.6MB in the beginning and 62.7MB in the end (delta: 13.9MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2023-11-26 11:50:35,386 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.36ms. Allocated memory is still 123.7MB. Free memory is still 69.6MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 574.57ms. Allocated memory is still 123.7MB. Free memory was 76.6MB in the beginning and 62.7MB in the end (delta: 13.9MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 576]: Unsupported Syntax Found a cast between two array/pointer types of different sizes while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_529e1300-3e22-4609-a8ef-a8f5dddd66f7/bin/uautomizer-verify-VRDe98Ueme/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_529e1300-3e22-4609-a8ef-a8f5dddd66f7/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_529e1300-3e22-4609-a8ef-a8f5dddd66f7/bin/uautomizer-verify-VRDe98Ueme/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_529e1300-3e22-4609-a8ef-a8f5dddd66f7/bin/uautomizer-verify-VRDe98Ueme/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/ldv-memsafety/memleaks_test6.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_529e1300-3e22-4609-a8ef-a8f5dddd66f7/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_529e1300-3e22-4609-a8ef-a8f5dddd66f7/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 3ed2f79dd7eb34d7f468c81f6f234938dec012581166f8f07d8a0cec95998c6d --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-26 11:50:38,132 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-26 11:50:38,263 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_529e1300-3e22-4609-a8ef-a8f5dddd66f7/bin/uautomizer-verify-VRDe98Ueme/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2023-11-26 11:50:38,274 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-26 11:50:38,275 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-26 11:50:38,341 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-26 11:50:38,343 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-26 11:50:38,344 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-26 11:50:38,345 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-26 11:50:38,351 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-26 11:50:38,352 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-26 11:50:38,353 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-26 11:50:38,354 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-26 11:50:38,356 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-26 11:50:38,357 INFO L153 SettingsManager]: * Use SBE=true [2023-11-26 11:50:38,358 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-26 11:50:38,358 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-26 11:50:38,359 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-26 11:50:38,359 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-26 11:50:38,360 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-26 11:50:38,361 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-26 11:50:38,361 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-26 11:50:38,362 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-26 11:50:38,363 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-26 11:50:38,363 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-26 11:50:38,364 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-11-26 11:50:38,365 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-11-26 11:50:38,365 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-26 11:50:38,366 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-26 11:50:38,367 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-26 11:50:38,369 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-26 11:50:38,370 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-26 11:50:38,370 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-26 11:50:38,371 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-26 11:50:38,371 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-26 11:50:38,372 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-26 11:50:38,373 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-26 11:50:38,374 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2023-11-26 11:50:38,374 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-11-26 11:50:38,374 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-26 11:50:38,375 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-26 11:50:38,375 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-26 11:50:38,376 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-26 11:50:38,376 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2023-11-26 11:50:38,377 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_529e1300-3e22-4609-a8ef-a8f5dddd66f7/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_529e1300-3e22-4609-a8ef-a8f5dddd66f7/bin/uautomizer-verify-VRDe98Ueme Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3ed2f79dd7eb34d7f468c81f6f234938dec012581166f8f07d8a0cec95998c6d [2023-11-26 11:50:38,874 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-26 11:50:38,901 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-26 11:50:38,905 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-26 11:50:38,906 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-26 11:50:38,907 INFO L274 PluginConnector]: CDTParser initialized [2023-11-26 11:50:38,909 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_529e1300-3e22-4609-a8ef-a8f5dddd66f7/bin/uautomizer-verify-VRDe98Ueme/../../sv-benchmarks/c/ldv-memsafety/memleaks_test6.i [2023-11-26 11:50:42,569 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-26 11:50:42,981 INFO L384 CDTParser]: Found 1 translation units. [2023-11-26 11:50:42,982 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_529e1300-3e22-4609-a8ef-a8f5dddd66f7/sv-benchmarks/c/ldv-memsafety/memleaks_test6.i [2023-11-26 11:50:43,008 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_529e1300-3e22-4609-a8ef-a8f5dddd66f7/bin/uautomizer-verify-VRDe98Ueme/data/e7823d02d/05809d36cecc43afbbf6f30f394a69a7/FLAG7b822cf41 [2023-11-26 11:50:43,027 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_529e1300-3e22-4609-a8ef-a8f5dddd66f7/bin/uautomizer-verify-VRDe98Ueme/data/e7823d02d/05809d36cecc43afbbf6f30f394a69a7 [2023-11-26 11:50:43,030 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-26 11:50:43,032 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-26 11:50:43,034 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-26 11:50:43,034 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-26 11:50:43,041 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-26 11:50:43,042 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 11:50:43" (1/1) ... [2023-11-26 11:50:43,043 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@360bb7fc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:50:43, skipping insertion in model container [2023-11-26 11:50:43,044 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 11:50:43" (1/1) ... [2023-11-26 11:50:43,104 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-26 11:50:43,583 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-26 11:50:43,607 INFO L199 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2023-11-26 11:50:43,624 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-26 11:50:43,737 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-26 11:50:43,757 INFO L202 MainTranslator]: Completed pre-run [2023-11-26 11:50:43,878 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-26 11:50:43,948 WARN L675 CHandler]: The function release is called, but not defined or handled by StandardFunctionHandler. [2023-11-26 11:50:43,958 INFO L206 MainTranslator]: Completed translation [2023-11-26 11:50:43,959 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:50:43 WrapperNode [2023-11-26 11:50:43,959 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-26 11:50:43,961 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-26 11:50:43,961 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-26 11:50:43,961 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-26 11:50:43,971 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:50:43" (1/1) ... [2023-11-26 11:50:44,030 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:50:43" (1/1) ... [2023-11-26 11:50:44,067 INFO L138 Inliner]: procedures = 169, calls = 79, calls flagged for inlining = 25, calls inlined = 7, statements flattened = 62 [2023-11-26 11:50:44,068 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-26 11:50:44,070 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-26 11:50:44,070 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-26 11:50:44,070 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-26 11:50:44,085 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:50:43" (1/1) ... [2023-11-26 11:50:44,086 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:50:43" (1/1) ... [2023-11-26 11:50:44,106 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:50:43" (1/1) ... [2023-11-26 11:50:44,146 INFO L175 MemorySlicer]: Split 6 memory accesses to 3 slices as follows [2, 4, 0]. 67 percent of accesses are in the largest equivalence class. The 3 initializations are split as follows [2, 1, 0]. The 2 writes are split as follows [0, 2, 0]. [2023-11-26 11:50:44,147 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:50:43" (1/1) ... [2023-11-26 11:50:44,147 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:50:43" (1/1) ... [2023-11-26 11:50:44,158 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:50:43" (1/1) ... [2023-11-26 11:50:44,169 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:50:43" (1/1) ... [2023-11-26 11:50:44,173 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:50:43" (1/1) ... [2023-11-26 11:50:44,182 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:50:43" (1/1) ... [2023-11-26 11:50:44,187 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-26 11:50:44,199 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-26 11:50:44,199 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-26 11:50:44,200 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-26 11:50:44,201 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:50:43" (1/1) ... [2023-11-26 11:50:44,207 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-26 11:50:44,226 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_529e1300-3e22-4609-a8ef-a8f5dddd66f7/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:50:44,257 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_529e1300-3e22-4609-a8ef-a8f5dddd66f7/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-26 11:50:44,259 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_529e1300-3e22-4609-a8ef-a8f5dddd66f7/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-26 11:50:44,308 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2023-11-26 11:50:44,309 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2023-11-26 11:50:44,309 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-26 11:50:44,309 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-26 11:50:44,309 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2023-11-26 11:50:44,310 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2023-11-26 11:50:44,310 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2023-11-26 11:50:44,310 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2023-11-26 11:50:44,310 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2023-11-26 11:50:44,311 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2023-11-26 11:50:44,311 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-26 11:50:44,311 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#0 [2023-11-26 11:50:44,311 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#1 [2023-11-26 11:50:44,312 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#2 [2023-11-26 11:50:44,313 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-26 11:50:44,313 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-26 11:50:44,549 INFO L241 CfgBuilder]: Building ICFG [2023-11-26 11:50:44,552 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-26 11:50:44,860 INFO L282 CfgBuilder]: Performing block encoding [2023-11-26 11:50:44,936 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-26 11:50:44,936 INFO L309 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-26 11:50:44,937 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 11:50:44 BoogieIcfgContainer [2023-11-26 11:50:44,937 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-26 11:50:44,942 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-26 11:50:44,942 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-26 11:50:44,946 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-26 11:50:44,946 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.11 11:50:43" (1/3) ... [2023-11-26 11:50:44,947 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3ccae638 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 11:50:44, skipping insertion in model container [2023-11-26 11:50:44,947 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:50:43" (2/3) ... [2023-11-26 11:50:44,949 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3ccae638 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 11:50:44, skipping insertion in model container [2023-11-26 11:50:44,949 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 11:50:44" (3/3) ... [2023-11-26 11:50:44,950 INFO L112 eAbstractionObserver]: Analyzing ICFG memleaks_test6.i [2023-11-26 11:50:44,972 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-26 11:50:44,973 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 13 error locations. [2023-11-26 11:50:45,050 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-26 11:50:45,063 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;@2000d1bc, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-26 11:50:45,064 INFO L358 AbstractCegarLoop]: Starting to check reachability of 13 error locations. [2023-11-26 11:50:45,070 INFO L276 IsEmpty]: Start isEmpty. Operand has 36 states, 20 states have (on average 1.9) internal successors, (38), 33 states have internal predecessors, (38), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-26 11:50:45,083 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2023-11-26 11:50:45,084 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:50:45,085 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:50:45,086 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 10 more)] === [2023-11-26 11:50:45,095 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:50:45,095 INFO L85 PathProgramCache]: Analyzing trace with hash -154140781, now seen corresponding path program 1 times [2023-11-26 11:50:45,136 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-26 11:50:45,136 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1796398246] [2023-11-26 11:50:45,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:50:45,137 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 11:50:45,137 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_529e1300-3e22-4609-a8ef-a8f5dddd66f7/bin/uautomizer-verify-VRDe98Ueme/mathsat [2023-11-26 11:50:45,143 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_529e1300-3e22-4609-a8ef-a8f5dddd66f7/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 11:50:45,192 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_529e1300-3e22-4609-a8ef-a8f5dddd66f7/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 11:50:45,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:50:45,332 INFO L262 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-26 11:50:45,340 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:50:45,485 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 11:50:45,487 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 11:50:45,488 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-26 11:50:45,488 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1796398246] [2023-11-26 11:50:45,490 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1796398246] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:50:45,490 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:50:45,492 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-26 11:50:45,495 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [613420754] [2023-11-26 11:50:45,496 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:50:45,505 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-26 11:50:45,506 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-26 11:50:45,552 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-26 11:50:45,553 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-26 11:50:45,557 INFO L87 Difference]: Start difference. First operand has 36 states, 20 states have (on average 1.9) internal successors, (38), 33 states have internal predecessors, (38), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Second operand has 5 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-26 11:50:45,662 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:50:45,662 INFO L93 Difference]: Finished difference Result 35 states and 39 transitions. [2023-11-26 11:50:45,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-26 11:50:45,665 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 10 [2023-11-26 11:50:45,666 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:50:45,675 INFO L225 Difference]: With dead ends: 35 [2023-11-26 11:50:45,675 INFO L226 Difference]: Without dead ends: 34 [2023-11-26 11:50:45,677 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-26 11:50:45,682 INFO L413 NwaCegarLoop]: 29 mSDtfsCounter, 12 mSDsluCounter, 72 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 101 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-26 11:50:45,683 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 101 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-26 11:50:45,706 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2023-11-26 11:50:45,726 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 34. [2023-11-26 11:50:45,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 20 states have (on average 1.8) internal successors, (36), 31 states have internal predecessors, (36), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-26 11:50:45,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 38 transitions. [2023-11-26 11:50:45,731 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 38 transitions. Word has length 10 [2023-11-26 11:50:45,731 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:50:45,732 INFO L495 AbstractCegarLoop]: Abstraction has 34 states and 38 transitions. [2023-11-26 11:50:45,732 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-26 11:50:45,733 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 38 transitions. [2023-11-26 11:50:45,733 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2023-11-26 11:50:45,734 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:50:45,734 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:50:45,744 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_529e1300-3e22-4609-a8ef-a8f5dddd66f7/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)] Forceful destruction successful, exit code 0 [2023-11-26 11:50:45,937 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_529e1300-3e22-4609-a8ef-a8f5dddd66f7/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 11:50:45,937 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 10 more)] === [2023-11-26 11:50:45,938 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:50:45,938 INFO L85 PathProgramCache]: Analyzing trace with hash -483396847, now seen corresponding path program 1 times [2023-11-26 11:50:45,939 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-26 11:50:45,940 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1328162535] [2023-11-26 11:50:45,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:50:45,940 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 11:50:45,940 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_529e1300-3e22-4609-a8ef-a8f5dddd66f7/bin/uautomizer-verify-VRDe98Ueme/mathsat [2023-11-26 11:50:45,979 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_529e1300-3e22-4609-a8ef-a8f5dddd66f7/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 11:50:46,016 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_529e1300-3e22-4609-a8ef-a8f5dddd66f7/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 11:50:46,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:50:46,076 INFO L262 TraceCheckSpWp]: Trace formula consists of 50 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-26 11:50:46,078 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:50:46,230 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 11:50:46,230 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 11:50:46,231 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-26 11:50:46,231 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1328162535] [2023-11-26 11:50:46,231 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1328162535] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:50:46,231 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:50:46,232 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-26 11:50:46,232 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [125908500] [2023-11-26 11:50:46,232 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:50:46,233 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-26 11:50:46,234 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-26 11:50:46,235 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-26 11:50:46,235 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-11-26 11:50:46,236 INFO L87 Difference]: Start difference. First operand 34 states and 38 transitions. Second operand has 6 states, 5 states have (on average 1.8) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-26 11:50:46,468 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:50:46,468 INFO L93 Difference]: Finished difference Result 48 states and 54 transitions. [2023-11-26 11:50:46,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-26 11:50:46,469 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 1.8) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 11 [2023-11-26 11:50:46,469 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:50:46,470 INFO L225 Difference]: With dead ends: 48 [2023-11-26 11:50:46,471 INFO L226 Difference]: Without dead ends: 48 [2023-11-26 11:50:46,471 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-11-26 11:50:46,473 INFO L413 NwaCegarLoop]: 25 mSDtfsCounter, 52 mSDsluCounter, 63 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 88 SdHoareTripleChecker+Invalid, 68 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 67 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-26 11:50:46,474 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [52 Valid, 88 Invalid, 68 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 67 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-26 11:50:46,475 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2023-11-26 11:50:46,487 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 42. [2023-11-26 11:50:46,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42 states, 27 states have (on average 1.6666666666666667) internal successors, (45), 38 states have internal predecessors, (45), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-26 11:50:46,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 48 transitions. [2023-11-26 11:50:46,494 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 48 transitions. Word has length 11 [2023-11-26 11:50:46,495 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:50:46,495 INFO L495 AbstractCegarLoop]: Abstraction has 42 states and 48 transitions. [2023-11-26 11:50:46,496 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 1.8) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-26 11:50:46,496 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 48 transitions. [2023-11-26 11:50:46,497 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2023-11-26 11:50:46,497 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:50:46,497 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:50:46,503 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_529e1300-3e22-4609-a8ef-a8f5dddd66f7/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 11:50:46,699 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_529e1300-3e22-4609-a8ef-a8f5dddd66f7/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 11:50:46,700 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 10 more)] === [2023-11-26 11:50:46,701 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:50:46,701 INFO L85 PathProgramCache]: Analyzing trace with hash -483345175, now seen corresponding path program 1 times [2023-11-26 11:50:46,702 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-26 11:50:46,702 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1268002088] [2023-11-26 11:50:46,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:50:46,702 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 11:50:46,703 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_529e1300-3e22-4609-a8ef-a8f5dddd66f7/bin/uautomizer-verify-VRDe98Ueme/mathsat [2023-11-26 11:50:46,711 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_529e1300-3e22-4609-a8ef-a8f5dddd66f7/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 11:50:46,713 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_529e1300-3e22-4609-a8ef-a8f5dddd66f7/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 11:50:46,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:50:46,826 INFO L262 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 15 conjunts are in the unsatisfiable core [2023-11-26 11:50:46,829 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:50:46,981 WARN L876 $PredicateComparison]: unable to prove that (exists ((|ldv_malloc_#res.base| (_ BitVec 32))) (and (= (_ bv0 1) (select |c_old(#valid)| |ldv_malloc_#res.base|)) (= (store |c_old(#length)| |ldv_malloc_#res.base| (select |c_#length| |ldv_malloc_#res.base|)) |c_#length|))) is different from true [2023-11-26 11:50:47,062 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-26 11:50:47,071 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 9 [2023-11-26 11:50:47,180 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 11:50:47,180 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 11:50:47,180 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-26 11:50:47,181 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1268002088] [2023-11-26 11:50:47,181 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1268002088] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:50:47,181 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:50:47,182 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-26 11:50:47,182 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1670759725] [2023-11-26 11:50:47,182 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:50:47,183 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-26 11:50:47,183 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-26 11:50:47,184 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-26 11:50:47,184 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=13, Unknown=1, NotChecked=6, Total=30 [2023-11-26 11:50:47,185 INFO L87 Difference]: Start difference. First operand 42 states and 48 transitions. Second operand has 6 states, 4 states have (on average 2.25) internal successors, (9), 5 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-26 11:50:47,369 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:50:47,369 INFO L93 Difference]: Finished difference Result 45 states and 51 transitions. [2023-11-26 11:50:47,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-26 11:50:47,370 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 4 states have (on average 2.25) internal successors, (9), 5 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 11 [2023-11-26 11:50:47,371 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:50:47,372 INFO L225 Difference]: With dead ends: 45 [2023-11-26 11:50:47,372 INFO L226 Difference]: Without dead ends: 45 [2023-11-26 11:50:47,372 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=10, Invalid=13, Unknown=1, NotChecked=6, Total=30 [2023-11-26 11:50:47,374 INFO L413 NwaCegarLoop]: 35 mSDtfsCounter, 20 mSDsluCounter, 49 mSDsCounter, 0 mSdLazyCounter, 63 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 84 SdHoareTripleChecker+Invalid, 121 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 63 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 55 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-26 11:50:47,375 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 84 Invalid, 121 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 63 Invalid, 0 Unknown, 55 Unchecked, 0.2s Time] [2023-11-26 11:50:47,376 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2023-11-26 11:50:47,404 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 42. [2023-11-26 11:50:47,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42 states, 28 states have (on average 1.6071428571428572) internal successors, (45), 38 states have internal predecessors, (45), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-26 11:50:47,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 48 transitions. [2023-11-26 11:50:47,406 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 48 transitions. Word has length 11 [2023-11-26 11:50:47,406 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:50:47,407 INFO L495 AbstractCegarLoop]: Abstraction has 42 states and 48 transitions. [2023-11-26 11:50:47,407 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 4 states have (on average 2.25) internal successors, (9), 5 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-26 11:50:47,407 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 48 transitions. [2023-11-26 11:50:47,410 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2023-11-26 11:50:47,411 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:50:47,412 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:50:47,420 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_529e1300-3e22-4609-a8ef-a8f5dddd66f7/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)] Ended with exit code 0 [2023-11-26 11:50:47,614 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_529e1300-3e22-4609-a8ef-a8f5dddd66f7/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 11:50:47,615 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 10 more)] === [2023-11-26 11:50:47,615 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:50:47,615 INFO L85 PathProgramCache]: Analyzing trace with hash -483345176, now seen corresponding path program 1 times [2023-11-26 11:50:47,616 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-26 11:50:47,616 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [240873012] [2023-11-26 11:50:47,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:50:47,617 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 11:50:47,617 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_529e1300-3e22-4609-a8ef-a8f5dddd66f7/bin/uautomizer-verify-VRDe98Ueme/mathsat [2023-11-26 11:50:47,618 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_529e1300-3e22-4609-a8ef-a8f5dddd66f7/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 11:50:47,620 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_529e1300-3e22-4609-a8ef-a8f5dddd66f7/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 11:50:47,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:50:47,701 INFO L262 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-26 11:50:47,704 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:50:47,763 WARN L876 $PredicateComparison]: unable to prove that (exists ((|ldv_malloc_#res.base| (_ BitVec 32))) (= (store |c_old(#valid)| |ldv_malloc_#res.base| (_ bv1 1)) |c_#valid|)) is different from true [2023-11-26 11:50:47,813 INFO L349 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2023-11-26 11:50:47,814 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 20 [2023-11-26 11:50:47,872 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 11:50:47,873 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 11:50:47,873 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-26 11:50:47,873 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [240873012] [2023-11-26 11:50:47,874 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [240873012] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:50:47,874 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:50:47,874 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-26 11:50:47,874 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [418524938] [2023-11-26 11:50:47,874 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:50:47,875 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-26 11:50:47,875 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-26 11:50:47,876 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-26 11:50:47,876 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=8, Unknown=1, NotChecked=4, Total=20 [2023-11-26 11:50:47,876 INFO L87 Difference]: Start difference. First operand 42 states and 48 transitions. Second operand has 5 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-26 11:50:47,963 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:50:47,963 INFO L93 Difference]: Finished difference Result 42 states and 48 transitions. [2023-11-26 11:50:47,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-26 11:50:47,964 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 11 [2023-11-26 11:50:47,964 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:50:47,965 INFO L225 Difference]: With dead ends: 42 [2023-11-26 11:50:47,965 INFO L226 Difference]: Without dead ends: 42 [2023-11-26 11:50:47,965 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=8, Unknown=1, NotChecked=4, Total=20 [2023-11-26 11:50:47,967 INFO L413 NwaCegarLoop]: 27 mSDtfsCounter, 10 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 55 SdHoareTripleChecker+Invalid, 78 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 41 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-26 11:50:47,968 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 55 Invalid, 78 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 36 Invalid, 0 Unknown, 41 Unchecked, 0.1s Time] [2023-11-26 11:50:47,969 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2023-11-26 11:50:47,973 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 40. [2023-11-26 11:50:47,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40 states, 27 states have (on average 1.5925925925925926) internal successors, (43), 36 states have internal predecessors, (43), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-26 11:50:47,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 46 transitions. [2023-11-26 11:50:47,974 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 46 transitions. Word has length 11 [2023-11-26 11:50:47,975 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:50:47,975 INFO L495 AbstractCegarLoop]: Abstraction has 40 states and 46 transitions. [2023-11-26 11:50:47,975 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-26 11:50:47,975 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 46 transitions. [2023-11-26 11:50:47,976 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2023-11-26 11:50:47,976 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:50:47,977 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:50:47,990 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_529e1300-3e22-4609-a8ef-a8f5dddd66f7/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 11:50:48,179 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_529e1300-3e22-4609-a8ef-a8f5dddd66f7/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 11:50:48,180 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 10 more)] === [2023-11-26 11:50:48,180 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:50:48,180 INFO L85 PathProgramCache]: Analyzing trace with hash 1259413488, now seen corresponding path program 1 times [2023-11-26 11:50:48,181 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-26 11:50:48,181 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1532259606] [2023-11-26 11:50:48,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:50:48,181 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 11:50:48,182 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_529e1300-3e22-4609-a8ef-a8f5dddd66f7/bin/uautomizer-verify-VRDe98Ueme/mathsat [2023-11-26 11:50:48,183 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_529e1300-3e22-4609-a8ef-a8f5dddd66f7/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 11:50:48,186 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_529e1300-3e22-4609-a8ef-a8f5dddd66f7/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 11:50:48,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:50:48,253 INFO L262 TraceCheckSpWp]: Trace formula consists of 44 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-26 11:50:48,255 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:50:48,327 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 11:50:48,327 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 11:50:48,328 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-26 11:50:48,328 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1532259606] [2023-11-26 11:50:48,328 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1532259606] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:50:48,328 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:50:48,328 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-26 11:50:48,329 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2004974584] [2023-11-26 11:50:48,329 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:50:48,329 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-26 11:50:48,330 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-26 11:50:48,330 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-26 11:50:48,330 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-26 11:50:48,331 INFO L87 Difference]: Start difference. First operand 40 states and 46 transitions. Second operand has 5 states, 5 states have (on average 1.8) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-26 11:50:48,417 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:50:48,417 INFO L93 Difference]: Finished difference Result 36 states and 39 transitions. [2023-11-26 11:50:48,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-26 11:50:48,418 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1.8) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 11 [2023-11-26 11:50:48,419 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:50:48,419 INFO L225 Difference]: With dead ends: 36 [2023-11-26 11:50:48,419 INFO L226 Difference]: Without dead ends: 36 [2023-11-26 11:50:48,420 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-26 11:50:48,421 INFO L413 NwaCegarLoop]: 30 mSDtfsCounter, 1 mSDsluCounter, 78 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 108 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-26 11:50:48,421 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 108 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-26 11:50:48,422 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2023-11-26 11:50:48,426 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 35. [2023-11-26 11:50:48,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 23 states have (on average 1.5217391304347827) internal successors, (35), 31 states have internal predecessors, (35), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-26 11:50:48,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 38 transitions. [2023-11-26 11:50:48,427 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 38 transitions. Word has length 11 [2023-11-26 11:50:48,428 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:50:48,428 INFO L495 AbstractCegarLoop]: Abstraction has 35 states and 38 transitions. [2023-11-26 11:50:48,428 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 1.8) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-26 11:50:48,428 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 38 transitions. [2023-11-26 11:50:48,429 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2023-11-26 11:50:48,429 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:50:48,429 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:50:48,438 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_529e1300-3e22-4609-a8ef-a8f5dddd66f7/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 11:50:48,631 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_529e1300-3e22-4609-a8ef-a8f5dddd66f7/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 11:50:48,632 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 10 more)] === [2023-11-26 11:50:48,633 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:50:48,633 INFO L85 PathProgramCache]: Analyzing trace with hash 1257588294, now seen corresponding path program 1 times [2023-11-26 11:50:48,633 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-26 11:50:48,633 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [665672822] [2023-11-26 11:50:48,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:50:48,634 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 11:50:48,634 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_529e1300-3e22-4609-a8ef-a8f5dddd66f7/bin/uautomizer-verify-VRDe98Ueme/mathsat [2023-11-26 11:50:48,635 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_529e1300-3e22-4609-a8ef-a8f5dddd66f7/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 11:50:48,639 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_529e1300-3e22-4609-a8ef-a8f5dddd66f7/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 11:50:48,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:50:48,750 INFO L262 TraceCheckSpWp]: Trace formula consists of 45 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-26 11:50:48,752 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:50:48,895 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 11:50:48,895 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 11:50:48,895 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-26 11:50:48,896 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [665672822] [2023-11-26 11:50:48,896 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [665672822] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:50:48,896 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:50:48,896 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-26 11:50:48,896 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [183829035] [2023-11-26 11:50:48,897 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:50:48,898 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-26 11:50:48,898 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-26 11:50:48,898 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-26 11:50:48,899 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-26 11:50:48,899 INFO L87 Difference]: Start difference. First operand 35 states and 38 transitions. Second operand has 4 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-26 11:50:49,061 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:50:49,061 INFO L93 Difference]: Finished difference Result 50 states and 53 transitions. [2023-11-26 11:50:49,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-26 11:50:49,062 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 11 [2023-11-26 11:50:49,062 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:50:49,063 INFO L225 Difference]: With dead ends: 50 [2023-11-26 11:50:49,064 INFO L226 Difference]: Without dead ends: 50 [2023-11-26 11:50:49,064 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-26 11:50:49,065 INFO L413 NwaCegarLoop]: 21 mSDtfsCounter, 26 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 43 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-26 11:50:49,066 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 43 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-26 11:50:49,067 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2023-11-26 11:50:49,071 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 38. [2023-11-26 11:50:49,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38 states, 26 states have (on average 1.5384615384615385) internal successors, (40), 34 states have internal predecessors, (40), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-26 11:50:49,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 43 transitions. [2023-11-26 11:50:49,073 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 43 transitions. Word has length 11 [2023-11-26 11:50:49,073 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:50:49,073 INFO L495 AbstractCegarLoop]: Abstraction has 38 states and 43 transitions. [2023-11-26 11:50:49,073 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-26 11:50:49,074 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 43 transitions. [2023-11-26 11:50:49,074 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2023-11-26 11:50:49,075 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:50:49,075 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:50:49,083 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_529e1300-3e22-4609-a8ef-a8f5dddd66f7/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)] Forceful destruction successful, exit code 0 [2023-11-26 11:50:49,277 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_529e1300-3e22-4609-a8ef-a8f5dddd66f7/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 11:50:49,278 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 10 more)] === [2023-11-26 11:50:49,279 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:50:49,279 INFO L85 PathProgramCache]: Analyzing trace with hash 1257588295, now seen corresponding path program 1 times [2023-11-26 11:50:49,279 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-26 11:50:49,279 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1612539240] [2023-11-26 11:50:49,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:50:49,280 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 11:50:49,280 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_529e1300-3e22-4609-a8ef-a8f5dddd66f7/bin/uautomizer-verify-VRDe98Ueme/mathsat [2023-11-26 11:50:49,281 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_529e1300-3e22-4609-a8ef-a8f5dddd66f7/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 11:50:49,319 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_529e1300-3e22-4609-a8ef-a8f5dddd66f7/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 11:50:49,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:50:49,362 INFO L262 TraceCheckSpWp]: Trace formula consists of 45 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-26 11:50:49,367 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:50:49,518 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 11:50:49,519 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 11:50:49,519 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-26 11:50:49,519 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1612539240] [2023-11-26 11:50:49,519 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1612539240] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:50:49,519 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:50:49,519 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-26 11:50:49,520 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [542613768] [2023-11-26 11:50:49,520 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:50:49,520 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-26 11:50:49,520 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-26 11:50:49,521 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-26 11:50:49,521 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-26 11:50:49,522 INFO L87 Difference]: Start difference. First operand 38 states and 43 transitions. Second operand has 4 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-26 11:50:49,661 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:50:49,661 INFO L93 Difference]: Finished difference Result 54 states and 59 transitions. [2023-11-26 11:50:49,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-26 11:50:49,662 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 11 [2023-11-26 11:50:49,662 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:50:49,663 INFO L225 Difference]: With dead ends: 54 [2023-11-26 11:50:49,663 INFO L226 Difference]: Without dead ends: 54 [2023-11-26 11:50:49,663 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-26 11:50:49,664 INFO L413 NwaCegarLoop]: 27 mSDtfsCounter, 17 mSDsluCounter, 38 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 65 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-26 11:50:49,665 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 65 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-26 11:50:49,666 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2023-11-26 11:50:49,672 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 46. [2023-11-26 11:50:49,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46 states, 34 states have (on average 1.6176470588235294) internal successors, (55), 42 states have internal predecessors, (55), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-26 11:50:49,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 58 transitions. [2023-11-26 11:50:49,673 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 58 transitions. Word has length 11 [2023-11-26 11:50:49,674 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:50:49,674 INFO L495 AbstractCegarLoop]: Abstraction has 46 states and 58 transitions. [2023-11-26 11:50:49,674 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-26 11:50:49,675 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 58 transitions. [2023-11-26 11:50:49,675 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2023-11-26 11:50:49,675 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:50:49,676 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:50:49,679 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_529e1300-3e22-4609-a8ef-a8f5dddd66f7/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)] Ended with exit code 0 [2023-11-26 11:50:49,878 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_529e1300-3e22-4609-a8ef-a8f5dddd66f7/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 11:50:49,878 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 10 more)] === [2023-11-26 11:50:49,879 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:50:49,879 INFO L85 PathProgramCache]: Analyzing trace with hash 1257587878, now seen corresponding path program 1 times [2023-11-26 11:50:49,879 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-26 11:50:49,879 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1189598423] [2023-11-26 11:50:49,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:50:49,880 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 11:50:49,880 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_529e1300-3e22-4609-a8ef-a8f5dddd66f7/bin/uautomizer-verify-VRDe98Ueme/mathsat [2023-11-26 11:50:49,881 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_529e1300-3e22-4609-a8ef-a8f5dddd66f7/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 11:50:49,883 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_529e1300-3e22-4609-a8ef-a8f5dddd66f7/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 (9)] Waiting until timeout for monitored process [2023-11-26 11:50:49,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:50:49,949 INFO L262 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-26 11:50:49,950 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:50:49,983 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 11:50:49,983 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 11:50:49,984 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-26 11:50:49,984 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1189598423] [2023-11-26 11:50:49,984 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1189598423] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:50:49,984 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:50:49,984 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-26 11:50:49,985 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [927497383] [2023-11-26 11:50:49,985 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:50:49,985 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-26 11:50:49,985 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-26 11:50:49,986 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-26 11:50:49,986 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-26 11:50:49,986 INFO L87 Difference]: Start difference. First operand 46 states and 58 transitions. Second operand has 5 states, 5 states have (on average 1.8) internal successors, (9), 5 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-26 11:50:50,083 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:50:50,083 INFO L93 Difference]: Finished difference Result 43 states and 47 transitions. [2023-11-26 11:50:50,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-26 11:50:50,084 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1.8) internal successors, (9), 5 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 11 [2023-11-26 11:50:50,084 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:50:50,085 INFO L225 Difference]: With dead ends: 43 [2023-11-26 11:50:50,085 INFO L226 Difference]: Without dead ends: 43 [2023-11-26 11:50:50,085 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-11-26 11:50:50,086 INFO L413 NwaCegarLoop]: 26 mSDtfsCounter, 6 mSDsluCounter, 71 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 97 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-26 11:50:50,086 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 97 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-26 11:50:50,087 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2023-11-26 11:50:50,089 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 41. [2023-11-26 11:50:50,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 29 states have (on average 1.4827586206896552) internal successors, (43), 37 states have internal predecessors, (43), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-26 11:50:50,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 46 transitions. [2023-11-26 11:50:50,091 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 46 transitions. Word has length 11 [2023-11-26 11:50:50,091 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:50:50,091 INFO L495 AbstractCegarLoop]: Abstraction has 41 states and 46 transitions. [2023-11-26 11:50:50,091 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 1.8) internal successors, (9), 5 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-26 11:50:50,091 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 46 transitions. [2023-11-26 11:50:50,092 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2023-11-26 11:50:50,092 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:50:50,092 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:50:50,105 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_529e1300-3e22-4609-a8ef-a8f5dddd66f7/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 (9)] Ended with exit code 0 [2023-11-26 11:50:50,294 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_529e1300-3e22-4609-a8ef-a8f5dddd66f7/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 11:50:50,294 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 10 more)] === [2023-11-26 11:50:50,295 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:50:50,295 INFO L85 PathProgramCache]: Analyzing trace with hash -2100400299, now seen corresponding path program 1 times [2023-11-26 11:50:50,295 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-26 11:50:50,295 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [433132411] [2023-11-26 11:50:50,295 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:50:50,295 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 11:50:50,296 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_529e1300-3e22-4609-a8ef-a8f5dddd66f7/bin/uautomizer-verify-VRDe98Ueme/mathsat [2023-11-26 11:50:50,296 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_529e1300-3e22-4609-a8ef-a8f5dddd66f7/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 11:50:50,297 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_529e1300-3e22-4609-a8ef-a8f5dddd66f7/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 (10)] Waiting until timeout for monitored process [2023-11-26 11:50:50,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:50:50,353 INFO L262 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-26 11:50:50,355 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:50:50,359 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 11:50:50,400 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 11:50:50,400 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 11:50:50,400 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-26 11:50:50,400 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [433132411] [2023-11-26 11:50:50,400 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [433132411] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:50:50,400 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:50:50,401 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-26 11:50:50,401 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [330100902] [2023-11-26 11:50:50,401 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:50:50,401 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-26 11:50:50,401 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-26 11:50:50,402 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-26 11:50:50,402 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-26 11:50:50,402 INFO L87 Difference]: Start difference. First operand 41 states and 46 transitions. Second operand has 5 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-26 11:50:50,492 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:50:50,493 INFO L93 Difference]: Finished difference Result 40 states and 45 transitions. [2023-11-26 11:50:50,493 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-26 11:50:50,493 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 12 [2023-11-26 11:50:50,493 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:50:50,494 INFO L225 Difference]: With dead ends: 40 [2023-11-26 11:50:50,494 INFO L226 Difference]: Without dead ends: 40 [2023-11-26 11:50:50,494 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-26 11:50:50,495 INFO L413 NwaCegarLoop]: 26 mSDtfsCounter, 4 mSDsluCounter, 48 mSDsCounter, 0 mSdLazyCounter, 57 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 74 SdHoareTripleChecker+Invalid, 57 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 57 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-26 11:50:50,495 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 74 Invalid, 57 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 57 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-26 11:50:50,496 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2023-11-26 11:50:50,498 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 40. [2023-11-26 11:50:50,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40 states, 29 states have (on average 1.4482758620689655) internal successors, (42), 36 states have internal predecessors, (42), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-26 11:50:50,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 45 transitions. [2023-11-26 11:50:50,499 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 45 transitions. Word has length 12 [2023-11-26 11:50:50,499 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:50:50,499 INFO L495 AbstractCegarLoop]: Abstraction has 40 states and 45 transitions. [2023-11-26 11:50:50,500 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-26 11:50:50,500 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 45 transitions. [2023-11-26 11:50:50,500 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2023-11-26 11:50:50,500 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:50:50,500 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:50:50,508 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_529e1300-3e22-4609-a8ef-a8f5dddd66f7/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 (10)] Forceful destruction successful, exit code 0 [2023-11-26 11:50:50,701 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_529e1300-3e22-4609-a8ef-a8f5dddd66f7/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 11:50:50,701 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 10 more)] === [2023-11-26 11:50:50,702 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:50:50,702 INFO L85 PathProgramCache]: Analyzing trace with hash 330531981, now seen corresponding path program 1 times [2023-11-26 11:50:50,702 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-26 11:50:50,702 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1582411246] [2023-11-26 11:50:50,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:50:50,702 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 11:50:50,703 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_529e1300-3e22-4609-a8ef-a8f5dddd66f7/bin/uautomizer-verify-VRDe98Ueme/mathsat [2023-11-26 11:50:50,704 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_529e1300-3e22-4609-a8ef-a8f5dddd66f7/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 11:50:50,706 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_529e1300-3e22-4609-a8ef-a8f5dddd66f7/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 (11)] Waiting until timeout for monitored process [2023-11-26 11:50:50,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:50:50,766 INFO L262 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-26 11:50:50,767 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:50:50,796 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 11:50:50,796 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 11:50:50,797 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-26 11:50:50,797 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1582411246] [2023-11-26 11:50:50,797 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1582411246] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:50:50,797 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:50:50,797 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-26 11:50:50,798 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1442608266] [2023-11-26 11:50:50,798 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:50:50,798 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-26 11:50:50,798 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-26 11:50:50,799 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-26 11:50:50,799 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-26 11:50:50,799 INFO L87 Difference]: Start difference. First operand 40 states and 45 transitions. Second operand has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-26 11:50:50,870 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:50:50,870 INFO L93 Difference]: Finished difference Result 41 states and 45 transitions. [2023-11-26 11:50:50,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-26 11:50:50,871 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 12 [2023-11-26 11:50:50,871 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:50:50,872 INFO L225 Difference]: With dead ends: 41 [2023-11-26 11:50:50,872 INFO L226 Difference]: Without dead ends: 33 [2023-11-26 11:50:50,872 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-26 11:50:50,873 INFO L413 NwaCegarLoop]: 29 mSDtfsCounter, 0 mSDsluCounter, 38 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 67 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-26 11:50:50,873 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 67 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-26 11:50:50,874 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2023-11-26 11:50:50,875 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2023-11-26 11:50:50,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 23 states have (on average 1.5217391304347827) internal successors, (35), 30 states have internal predecessors, (35), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-26 11:50:50,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 37 transitions. [2023-11-26 11:50:50,876 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 37 transitions. Word has length 12 [2023-11-26 11:50:50,876 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:50:50,876 INFO L495 AbstractCegarLoop]: Abstraction has 33 states and 37 transitions. [2023-11-26 11:50:50,876 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-26 11:50:50,877 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 37 transitions. [2023-11-26 11:50:50,877 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2023-11-26 11:50:50,877 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:50:50,877 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:50:50,885 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_529e1300-3e22-4609-a8ef-a8f5dddd66f7/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 (11)] Forceful destruction successful, exit code 0 [2023-11-26 11:50:51,080 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_529e1300-3e22-4609-a8ef-a8f5dddd66f7/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 11:50:51,080 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 10 more)] === [2023-11-26 11:50:51,080 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:50:51,080 INFO L85 PathProgramCache]: Analyzing trace with hash 1690617880, now seen corresponding path program 1 times [2023-11-26 11:50:51,081 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-26 11:50:51,081 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [337194] [2023-11-26 11:50:51,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:50:51,081 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 11:50:51,081 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_529e1300-3e22-4609-a8ef-a8f5dddd66f7/bin/uautomizer-verify-VRDe98Ueme/mathsat [2023-11-26 11:50:51,083 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_529e1300-3e22-4609-a8ef-a8f5dddd66f7/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 11:50:51,102 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_529e1300-3e22-4609-a8ef-a8f5dddd66f7/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 (12)] Waiting until timeout for monitored process [2023-11-26 11:50:51,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:50:51,157 INFO L262 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-26 11:50:51,159 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:50:51,174 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 11:50:51,174 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 11:50:51,174 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-26 11:50:51,174 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [337194] [2023-11-26 11:50:51,175 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [337194] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:50:51,175 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:50:51,175 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-26 11:50:51,175 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1472798774] [2023-11-26 11:50:51,175 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:50:51,176 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-26 11:50:51,176 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-26 11:50:51,176 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-26 11:50:51,177 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-26 11:50:51,177 INFO L87 Difference]: Start difference. First operand 33 states and 37 transitions. Second operand has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-26 11:50:51,235 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:50:51,235 INFO L93 Difference]: Finished difference Result 49 states and 50 transitions. [2023-11-26 11:50:51,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-26 11:50:51,236 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 14 [2023-11-26 11:50:51,237 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:50:51,237 INFO L225 Difference]: With dead ends: 49 [2023-11-26 11:50:51,237 INFO L226 Difference]: Without dead ends: 49 [2023-11-26 11:50:51,237 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-26 11:50:51,238 INFO L413 NwaCegarLoop]: 27 mSDtfsCounter, 38 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 69 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-26 11:50:51,238 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [38 Valid, 69 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-26 11:50:51,239 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2023-11-26 11:50:51,241 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 32. [2023-11-26 11:50:51,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 22 states have (on average 1.4545454545454546) internal successors, (32), 29 states have internal predecessors, (32), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-26 11:50:51,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 34 transitions. [2023-11-26 11:50:51,242 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 34 transitions. Word has length 14 [2023-11-26 11:50:51,242 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:50:51,242 INFO L495 AbstractCegarLoop]: Abstraction has 32 states and 34 transitions. [2023-11-26 11:50:51,242 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-26 11:50:51,242 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 34 transitions. [2023-11-26 11:50:51,243 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2023-11-26 11:50:51,243 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:50:51,243 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:50:51,254 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_529e1300-3e22-4609-a8ef-a8f5dddd66f7/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 (12)] Forceful destruction successful, exit code 0 [2023-11-26 11:50:51,444 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_529e1300-3e22-4609-a8ef-a8f5dddd66f7/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 11:50:51,444 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 10 more)] === [2023-11-26 11:50:51,445 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:50:51,445 INFO L85 PathProgramCache]: Analyzing trace with hash 1690617463, now seen corresponding path program 1 times [2023-11-26 11:50:51,445 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-26 11:50:51,445 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [455633519] [2023-11-26 11:50:51,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:50:51,446 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 11:50:51,446 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_529e1300-3e22-4609-a8ef-a8f5dddd66f7/bin/uautomizer-verify-VRDe98Ueme/mathsat [2023-11-26 11:50:51,447 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_529e1300-3e22-4609-a8ef-a8f5dddd66f7/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 11:50:51,448 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_529e1300-3e22-4609-a8ef-a8f5dddd66f7/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 (13)] Waiting until timeout for monitored process [2023-11-26 11:50:51,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:50:51,521 INFO L262 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 11 conjunts are in the unsatisfiable core [2023-11-26 11:50:51,523 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:50:51,679 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 11:50:51,679 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 11:50:51,679 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-26 11:50:51,680 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [455633519] [2023-11-26 11:50:51,680 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [455633519] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:50:51,680 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:50:51,680 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-26 11:50:51,680 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1796900961] [2023-11-26 11:50:51,680 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:50:51,681 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-26 11:50:51,681 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-26 11:50:51,682 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-26 11:50:51,682 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-11-26 11:50:51,682 INFO L87 Difference]: Start difference. First operand 32 states and 34 transitions. Second operand has 6 states, 5 states have (on average 2.4) internal successors, (12), 5 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-26 11:50:51,858 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:50:51,858 INFO L93 Difference]: Finished difference Result 42 states and 44 transitions. [2023-11-26 11:50:51,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-26 11:50:51,860 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.4) internal successors, (12), 5 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 14 [2023-11-26 11:50:51,860 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:50:51,860 INFO L225 Difference]: With dead ends: 42 [2023-11-26 11:50:51,861 INFO L226 Difference]: Without dead ends: 42 [2023-11-26 11:50:51,861 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2023-11-26 11:50:51,862 INFO L413 NwaCegarLoop]: 20 mSDtfsCounter, 39 mSDsluCounter, 44 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 64 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-26 11:50:51,862 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [39 Valid, 64 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 52 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-26 11:50:51,863 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2023-11-26 11:50:51,865 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 37. [2023-11-26 11:50:51,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 27 states have (on average 1.5555555555555556) internal successors, (42), 34 states have internal predecessors, (42), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-26 11:50:51,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 44 transitions. [2023-11-26 11:50:51,866 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 44 transitions. Word has length 14 [2023-11-26 11:50:51,867 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:50:51,867 INFO L495 AbstractCegarLoop]: Abstraction has 37 states and 44 transitions. [2023-11-26 11:50:51,867 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.4) internal successors, (12), 5 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-26 11:50:51,868 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 44 transitions. [2023-11-26 11:50:51,868 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2023-11-26 11:50:51,868 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:50:51,868 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:50:51,877 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_529e1300-3e22-4609-a8ef-a8f5dddd66f7/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 (13)] Forceful destruction successful, exit code 0 [2023-11-26 11:50:52,069 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_529e1300-3e22-4609-a8ef-a8f5dddd66f7/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 11:50:52,069 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 10 more)] === [2023-11-26 11:50:52,070 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:50:52,070 INFO L85 PathProgramCache]: Analyzing trace with hash 1690617462, now seen corresponding path program 1 times [2023-11-26 11:50:52,070 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-26 11:50:52,070 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1754680911] [2023-11-26 11:50:52,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:50:52,071 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 11:50:52,071 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_529e1300-3e22-4609-a8ef-a8f5dddd66f7/bin/uautomizer-verify-VRDe98Ueme/mathsat [2023-11-26 11:50:52,072 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_529e1300-3e22-4609-a8ef-a8f5dddd66f7/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 11:50:52,074 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_529e1300-3e22-4609-a8ef-a8f5dddd66f7/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 (14)] Waiting until timeout for monitored process [2023-11-26 11:50:52,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:50:52,147 INFO L262 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-26 11:50:52,151 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:50:52,194 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 11:50:52,194 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 11:50:52,194 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-26 11:50:52,194 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1754680911] [2023-11-26 11:50:52,195 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1754680911] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:50:52,195 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:50:52,195 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-26 11:50:52,195 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1715634540] [2023-11-26 11:50:52,195 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:50:52,196 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-26 11:50:52,196 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-26 11:50:52,197 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-26 11:50:52,197 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-26 11:50:52,197 INFO L87 Difference]: Start difference. First operand 37 states and 44 transitions. Second operand has 5 states, 4 states have (on average 3.0) internal successors, (12), 5 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-26 11:50:52,309 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:50:52,310 INFO L93 Difference]: Finished difference Result 40 states and 43 transitions. [2023-11-26 11:50:52,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-26 11:50:52,310 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.0) internal successors, (12), 5 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 14 [2023-11-26 11:50:52,311 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:50:52,311 INFO L225 Difference]: With dead ends: 40 [2023-11-26 11:50:52,311 INFO L226 Difference]: Without dead ends: 40 [2023-11-26 11:50:52,311 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-11-26 11:50:52,312 INFO L413 NwaCegarLoop]: 19 mSDtfsCounter, 36 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 46 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-26 11:50:52,312 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 46 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-26 11:50:52,313 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2023-11-26 11:50:52,314 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 37. [2023-11-26 11:50:52,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 27 states have (on average 1.5185185185185186) internal successors, (41), 34 states have internal predecessors, (41), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-26 11:50:52,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 43 transitions. [2023-11-26 11:50:52,315 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 43 transitions. Word has length 14 [2023-11-26 11:50:52,315 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:50:52,316 INFO L495 AbstractCegarLoop]: Abstraction has 37 states and 43 transitions. [2023-11-26 11:50:52,316 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.0) internal successors, (12), 5 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-26 11:50:52,316 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 43 transitions. [2023-11-26 11:50:52,317 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2023-11-26 11:50:52,317 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:50:52,317 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:50:52,324 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_529e1300-3e22-4609-a8ef-a8f5dddd66f7/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 (14)] Forceful destruction successful, exit code 0 [2023-11-26 11:50:52,518 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_529e1300-3e22-4609-a8ef-a8f5dddd66f7/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 11:50:52,518 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 10 more)] === [2023-11-26 11:50:52,518 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:50:52,518 INFO L85 PathProgramCache]: Analyzing trace with hash 353299927, now seen corresponding path program 1 times [2023-11-26 11:50:52,519 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-26 11:50:52,519 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1137945635] [2023-11-26 11:50:52,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:50:52,519 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 11:50:52,519 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_529e1300-3e22-4609-a8ef-a8f5dddd66f7/bin/uautomizer-verify-VRDe98Ueme/mathsat [2023-11-26 11:50:52,520 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_529e1300-3e22-4609-a8ef-a8f5dddd66f7/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 11:50:52,521 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_529e1300-3e22-4609-a8ef-a8f5dddd66f7/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 (15)] Waiting until timeout for monitored process [2023-11-26 11:50:52,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:50:52,583 INFO L262 TraceCheckSpWp]: Trace formula consists of 57 conjuncts, 10 conjunts are in the unsatisfiable core [2023-11-26 11:50:52,585 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:50:52,678 INFO L349 Elim1Store]: treesize reduction 24, result has 33.3 percent of original size [2023-11-26 11:50:52,679 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 21 treesize of output 20 [2023-11-26 11:50:52,789 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 13 [2023-11-26 11:50:52,805 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 11:50:52,805 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 11:50:52,805 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-26 11:50:52,806 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1137945635] [2023-11-26 11:50:52,806 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1137945635] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:50:52,806 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:50:52,806 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-26 11:50:52,806 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [481832436] [2023-11-26 11:50:52,806 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:50:52,807 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-26 11:50:52,807 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-26 11:50:52,807 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-26 11:50:52,808 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-11-26 11:50:52,808 INFO L87 Difference]: Start difference. First operand 37 states and 43 transitions. Second operand has 7 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 5 states have internal predecessors, (13), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-26 11:50:52,972 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:50:52,972 INFO L93 Difference]: Finished difference Result 41 states and 46 transitions. [2023-11-26 11:50:52,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-26 11:50:52,973 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 5 states have internal predecessors, (13), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 15 [2023-11-26 11:50:52,973 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:50:52,974 INFO L225 Difference]: With dead ends: 41 [2023-11-26 11:50:52,974 INFO L226 Difference]: Without dead ends: 41 [2023-11-26 11:50:52,974 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2023-11-26 11:50:52,975 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 19 mSDsluCounter, 44 mSDsCounter, 0 mSdLazyCounter, 91 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 59 SdHoareTripleChecker+Invalid, 93 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 91 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-26 11:50:52,976 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 59 Invalid, 93 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 91 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-26 11:50:52,976 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2023-11-26 11:50:52,978 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 38. [2023-11-26 11:50:52,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38 states, 28 states have (on average 1.5357142857142858) internal successors, (43), 35 states have internal predecessors, (43), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-26 11:50:52,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 45 transitions. [2023-11-26 11:50:52,979 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 45 transitions. Word has length 15 [2023-11-26 11:50:52,979 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:50:52,979 INFO L495 AbstractCegarLoop]: Abstraction has 38 states and 45 transitions. [2023-11-26 11:50:52,979 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 5 states have internal predecessors, (13), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-26 11:50:52,979 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 45 transitions. [2023-11-26 11:50:52,980 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2023-11-26 11:50:52,980 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:50:52,980 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:50:52,988 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_529e1300-3e22-4609-a8ef-a8f5dddd66f7/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 (15)] Forceful destruction successful, exit code 0 [2023-11-26 11:50:53,183 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_529e1300-3e22-4609-a8ef-a8f5dddd66f7/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 11:50:53,183 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 10 more)] === [2023-11-26 11:50:53,184 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:50:53,184 INFO L85 PathProgramCache]: Analyzing trace with hash 353299928, now seen corresponding path program 1 times [2023-11-26 11:50:53,184 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-26 11:50:53,184 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [389762721] [2023-11-26 11:50:53,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:50:53,185 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 11:50:53,185 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_529e1300-3e22-4609-a8ef-a8f5dddd66f7/bin/uautomizer-verify-VRDe98Ueme/mathsat [2023-11-26 11:50:53,186 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_529e1300-3e22-4609-a8ef-a8f5dddd66f7/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 11:50:53,187 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_529e1300-3e22-4609-a8ef-a8f5dddd66f7/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 (16)] Waiting until timeout for monitored process [2023-11-26 11:50:53,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:50:53,283 INFO L262 TraceCheckSpWp]: Trace formula consists of 57 conjuncts, 11 conjunts are in the unsatisfiable core [2023-11-26 11:50:53,286 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:50:53,491 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-26 11:50:53,492 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 9 [2023-11-26 11:50:53,631 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 11:50:53,631 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 11:50:53,632 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-26 11:50:53,632 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [389762721] [2023-11-26 11:50:53,632 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [389762721] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:50:53,632 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:50:53,632 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-26 11:50:53,633 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [905879698] [2023-11-26 11:50:53,633 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:50:53,633 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-26 11:50:53,633 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-26 11:50:53,634 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-26 11:50:53,634 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-26 11:50:53,635 INFO L87 Difference]: Start difference. First operand 38 states and 45 transitions. Second operand has 6 states, 4 states have (on average 3.25) internal successors, (13), 5 states have internal predecessors, (13), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-26 11:50:53,969 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:50:53,969 INFO L93 Difference]: Finished difference Result 40 states and 43 transitions. [2023-11-26 11:50:53,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-26 11:50:53,970 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 4 states have (on average 3.25) internal successors, (13), 5 states have internal predecessors, (13), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 15 [2023-11-26 11:50:53,970 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:50:53,970 INFO L225 Difference]: With dead ends: 40 [2023-11-26 11:50:53,970 INFO L226 Difference]: Without dead ends: 40 [2023-11-26 11:50:53,971 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2023-11-26 11:50:53,972 INFO L413 NwaCegarLoop]: 16 mSDtfsCounter, 48 mSDsluCounter, 33 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 49 SdHoareTripleChecker+Invalid, 59 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 54 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-26 11:50:53,972 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [48 Valid, 49 Invalid, 59 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 54 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-26 11:50:53,973 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2023-11-26 11:50:53,974 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 33. [2023-11-26 11:50:53,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 24 states have (on average 1.375) internal successors, (33), 30 states have internal predecessors, (33), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-26 11:50:53,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 35 transitions. [2023-11-26 11:50:53,976 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 35 transitions. Word has length 15 [2023-11-26 11:50:53,976 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:50:53,976 INFO L495 AbstractCegarLoop]: Abstraction has 33 states and 35 transitions. [2023-11-26 11:50:53,977 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 4 states have (on average 3.25) internal successors, (13), 5 states have internal predecessors, (13), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-26 11:50:53,977 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 35 transitions. [2023-11-26 11:50:53,977 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2023-11-26 11:50:53,978 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:50:53,978 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:50:53,981 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_529e1300-3e22-4609-a8ef-a8f5dddd66f7/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 (16)] Forceful destruction successful, exit code 0 [2023-11-26 11:50:54,178 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_529e1300-3e22-4609-a8ef-a8f5dddd66f7/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 11:50:54,179 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 10 more)] === [2023-11-26 11:50:54,179 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:50:54,180 INFO L85 PathProgramCache]: Analyzing trace with hash 353299511, now seen corresponding path program 1 times [2023-11-26 11:50:54,180 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-26 11:50:54,180 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1394446] [2023-11-26 11:50:54,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:50:54,181 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 11:50:54,181 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_529e1300-3e22-4609-a8ef-a8f5dddd66f7/bin/uautomizer-verify-VRDe98Ueme/mathsat [2023-11-26 11:50:54,182 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_529e1300-3e22-4609-a8ef-a8f5dddd66f7/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 11:50:54,191 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_529e1300-3e22-4609-a8ef-a8f5dddd66f7/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 (17)] Waiting until timeout for monitored process [2023-11-26 11:50:54,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:50:54,272 INFO L262 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-26 11:50:54,274 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:50:54,313 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 11:50:54,313 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 11:50:54,313 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-26 11:50:54,313 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1394446] [2023-11-26 11:50:54,314 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1394446] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:50:54,314 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:50:54,314 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-26 11:50:54,314 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [766125098] [2023-11-26 11:50:54,314 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:50:54,314 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-26 11:50:54,314 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-26 11:50:54,315 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-26 11:50:54,315 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-26 11:50:54,315 INFO L87 Difference]: Start difference. First operand 33 states and 35 transitions. Second operand has 5 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-26 11:50:54,417 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:50:54,417 INFO L93 Difference]: Finished difference Result 32 states and 32 transitions. [2023-11-26 11:50:54,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-26 11:50:54,418 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 15 [2023-11-26 11:50:54,419 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:50:54,419 INFO L225 Difference]: With dead ends: 32 [2023-11-26 11:50:54,419 INFO L226 Difference]: Without dead ends: 32 [2023-11-26 11:50:54,420 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-11-26 11:50:54,420 INFO L413 NwaCegarLoop]: 21 mSDtfsCounter, 6 mSDsluCounter, 54 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 75 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-26 11:50:54,421 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 75 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-26 11:50:54,421 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2023-11-26 11:50:54,422 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 30. [2023-11-26 11:50:54,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 23 states have (on average 1.2608695652173914) internal successors, (29), 27 states have internal predecessors, (29), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-26 11:50:54,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 31 transitions. [2023-11-26 11:50:54,423 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 31 transitions. Word has length 15 [2023-11-26 11:50:54,424 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:50:54,424 INFO L495 AbstractCegarLoop]: Abstraction has 30 states and 31 transitions. [2023-11-26 11:50:54,424 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-26 11:50:54,424 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 31 transitions. [2023-11-26 11:50:54,425 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2023-11-26 11:50:54,425 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:50:54,425 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:50:54,437 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_529e1300-3e22-4609-a8ef-a8f5dddd66f7/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 (17)] Forceful destruction successful, exit code 0 [2023-11-26 11:50:54,628 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_529e1300-3e22-4609-a8ef-a8f5dddd66f7/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 11:50:54,628 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 10 more)] === [2023-11-26 11:50:54,629 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:50:54,629 INFO L85 PathProgramCache]: Analyzing trace with hash 869533788, now seen corresponding path program 1 times [2023-11-26 11:50:54,629 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-26 11:50:54,629 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1257725783] [2023-11-26 11:50:54,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:50:54,629 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 11:50:54,630 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_529e1300-3e22-4609-a8ef-a8f5dddd66f7/bin/uautomizer-verify-VRDe98Ueme/mathsat [2023-11-26 11:50:54,631 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_529e1300-3e22-4609-a8ef-a8f5dddd66f7/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 11:50:54,632 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_529e1300-3e22-4609-a8ef-a8f5dddd66f7/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 (18)] Waiting until timeout for monitored process [2023-11-26 11:50:54,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:50:54,722 INFO L262 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 16 conjunts are in the unsatisfiable core [2023-11-26 11:50:54,725 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:50:54,890 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 11 treesize of output 7 [2023-11-26 11:50:54,956 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 11:50:54,956 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 11:50:54,956 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-26 11:50:54,956 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1257725783] [2023-11-26 11:50:54,956 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1257725783] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:50:54,957 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:50:54,957 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-26 11:50:54,957 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1788190822] [2023-11-26 11:50:54,957 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:50:54,957 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-26 11:50:54,958 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-26 11:50:54,958 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-26 11:50:54,958 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2023-11-26 11:50:54,958 INFO L87 Difference]: Start difference. First operand 30 states and 31 transitions. Second operand has 9 states, 7 states have (on average 1.8571428571428572) internal successors, (13), 8 states have internal predecessors, (13), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-26 11:50:55,229 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:50:55,229 INFO L93 Difference]: Finished difference Result 29 states and 30 transitions. [2023-11-26 11:50:55,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-26 11:50:55,230 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 7 states have (on average 1.8571428571428572) internal successors, (13), 8 states have internal predecessors, (13), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 15 [2023-11-26 11:50:55,230 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:50:55,230 INFO L225 Difference]: With dead ends: 29 [2023-11-26 11:50:55,230 INFO L226 Difference]: Without dead ends: 29 [2023-11-26 11:50:55,231 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=47, Invalid=163, Unknown=0, NotChecked=0, Total=210 [2023-11-26 11:50:55,232 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 43 mSDsluCounter, 57 mSDsCounter, 0 mSdLazyCounter, 72 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 72 SdHoareTripleChecker+Invalid, 76 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 72 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-26 11:50:55,232 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [43 Valid, 72 Invalid, 76 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 72 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-26 11:50:55,233 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2023-11-26 11:50:55,234 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2023-11-26 11:50:55,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 23 states have (on average 1.2173913043478262) internal successors, (28), 26 states have internal predecessors, (28), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-26 11:50:55,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 30 transitions. [2023-11-26 11:50:55,234 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 30 transitions. Word has length 15 [2023-11-26 11:50:55,235 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:50:55,235 INFO L495 AbstractCegarLoop]: Abstraction has 29 states and 30 transitions. [2023-11-26 11:50:55,236 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 7 states have (on average 1.8571428571428572) internal successors, (13), 8 states have internal predecessors, (13), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-26 11:50:55,236 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 30 transitions. [2023-11-26 11:50:55,236 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2023-11-26 11:50:55,237 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:50:55,237 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:50:55,248 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_529e1300-3e22-4609-a8ef-a8f5dddd66f7/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 (18)] Ended with exit code 0 [2023-11-26 11:50:55,440 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_529e1300-3e22-4609-a8ef-a8f5dddd66f7/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 11:50:55,440 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 10 more)] === [2023-11-26 11:50:55,441 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:50:55,441 INFO L85 PathProgramCache]: Analyzing trace with hash -1932603620, now seen corresponding path program 1 times [2023-11-26 11:50:55,442 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-26 11:50:55,442 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1504378950] [2023-11-26 11:50:55,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:50:55,442 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 11:50:55,442 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_529e1300-3e22-4609-a8ef-a8f5dddd66f7/bin/uautomizer-verify-VRDe98Ueme/mathsat [2023-11-26 11:50:55,444 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_529e1300-3e22-4609-a8ef-a8f5dddd66f7/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 11:50:55,451 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_529e1300-3e22-4609-a8ef-a8f5dddd66f7/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 (19)] Waiting until timeout for monitored process [2023-11-26 11:50:55,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:50:55,559 INFO L262 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 10 conjunts are in the unsatisfiable core [2023-11-26 11:50:55,574 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:50:55,736 WARN L876 $PredicateComparison]: unable to prove that (exists ((|ULTIMATE.start_probe1_6_~p~0#1.base| (_ BitVec 32))) (and (= (select |c_ULTIMATE.start_main_old_#valid#1| |ULTIMATE.start_probe1_6_~p~0#1.base|) (_ bv0 1)) (= |c_#valid| (store |c_ULTIMATE.start_main_old_#valid#1| |ULTIMATE.start_probe1_6_~p~0#1.base| (_ bv0 1))))) is different from true [2023-11-26 11:50:55,766 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 11:50:55,767 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 11:50:55,767 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-26 11:50:55,767 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1504378950] [2023-11-26 11:50:55,767 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1504378950] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:50:55,768 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:50:55,768 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-26 11:50:55,771 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1992521344] [2023-11-26 11:50:55,774 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:50:55,774 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-26 11:50:55,775 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-26 11:50:55,775 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-26 11:50:55,776 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=32, Unknown=1, NotChecked=10, Total=56 [2023-11-26 11:50:55,776 INFO L87 Difference]: Start difference. First operand 29 states and 30 transitions. Second operand has 8 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 6 states have internal predecessors, (14), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-26 11:50:56,003 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:50:56,003 INFO L93 Difference]: Finished difference Result 30 states and 30 transitions. [2023-11-26 11:50:56,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-26 11:50:56,004 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 6 states have internal predecessors, (14), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 16 [2023-11-26 11:50:56,004 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:50:56,004 INFO L225 Difference]: With dead ends: 30 [2023-11-26 11:50:56,005 INFO L226 Difference]: Without dead ends: 23 [2023-11-26 11:50:56,005 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=54, Unknown=1, NotChecked=14, Total=90 [2023-11-26 11:50:56,006 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 7 mSDsluCounter, 53 mSDsCounter, 0 mSdLazyCounter, 84 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 71 SdHoareTripleChecker+Invalid, 112 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 84 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 26 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-26 11:50:56,006 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 71 Invalid, 112 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 84 Invalid, 0 Unknown, 26 Unchecked, 0.2s Time] [2023-11-26 11:50:56,007 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2023-11-26 11:50:56,008 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2023-11-26 11:50:56,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 17 states have (on average 1.1764705882352942) internal successors, (20), 20 states have internal predecessors, (20), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-26 11:50:56,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 22 transitions. [2023-11-26 11:50:56,009 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 22 transitions. Word has length 16 [2023-11-26 11:50:56,009 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:50:56,009 INFO L495 AbstractCegarLoop]: Abstraction has 23 states and 22 transitions. [2023-11-26 11:50:56,009 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 6 states have internal predecessors, (14), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-26 11:50:56,009 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 22 transitions. [2023-11-26 11:50:56,010 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2023-11-26 11:50:56,010 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:50:56,010 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:50:56,016 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_529e1300-3e22-4609-a8ef-a8f5dddd66f7/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 (19)] Ended with exit code 0 [2023-11-26 11:50:56,211 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_529e1300-3e22-4609-a8ef-a8f5dddd66f7/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 11:50:56,211 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 10 more)] === [2023-11-26 11:50:56,211 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:50:56,211 INFO L85 PathProgramCache]: Analyzing trace with hash 1185743734, now seen corresponding path program 1 times [2023-11-26 11:50:56,212 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-26 11:50:56,212 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1710752223] [2023-11-26 11:50:56,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:50:56,212 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-26 11:50:56,212 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_529e1300-3e22-4609-a8ef-a8f5dddd66f7/bin/uautomizer-verify-VRDe98Ueme/mathsat [2023-11-26 11:50:56,213 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_529e1300-3e22-4609-a8ef-a8f5dddd66f7/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 11:50:56,235 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_529e1300-3e22-4609-a8ef-a8f5dddd66f7/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 (20)] Waiting until timeout for monitored process [2023-11-26 11:50:56,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:50:56,291 INFO L262 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 17 conjunts are in the unsatisfiable core [2023-11-26 11:50:56,293 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:50:56,498 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 15 treesize of output 1 [2023-11-26 11:50:56,569 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2023-11-26 11:50:56,604 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 11:50:56,604 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 11:50:56,604 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-26 11:50:56,604 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1710752223] [2023-11-26 11:50:56,605 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1710752223] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:50:56,605 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:50:56,605 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-26 11:50:56,605 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1689813341] [2023-11-26 11:50:56,605 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:50:56,605 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-26 11:50:56,606 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-26 11:50:56,606 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-26 11:50:56,606 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2023-11-26 11:50:56,606 INFO L87 Difference]: Start difference. First operand 23 states and 22 transitions. Second operand has 10 states, 8 states have (on average 1.75) internal successors, (14), 8 states have internal predecessors, (14), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-26 11:50:56,927 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:50:56,927 INFO L93 Difference]: Finished difference Result 22 states and 21 transitions. [2023-11-26 11:50:56,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-26 11:50:56,928 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 8 states have (on average 1.75) internal successors, (14), 8 states have internal predecessors, (14), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 16 [2023-11-26 11:50:56,928 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:50:56,929 INFO L225 Difference]: With dead ends: 22 [2023-11-26 11:50:56,929 INFO L226 Difference]: Without dead ends: 22 [2023-11-26 11:50:56,929 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=44, Invalid=112, Unknown=0, NotChecked=0, Total=156 [2023-11-26 11:50:56,930 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 16 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 96 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 39 SdHoareTripleChecker+Invalid, 96 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 96 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-26 11:50:56,930 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 39 Invalid, 96 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 96 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-26 11:50:56,931 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2023-11-26 11:50:56,931 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2023-11-26 11:50:56,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 17 states have (on average 1.1176470588235294) internal successors, (19), 19 states have internal predecessors, (19), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-26 11:50:56,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 21 transitions. [2023-11-26 11:50:56,932 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 21 transitions. Word has length 16 [2023-11-26 11:50:56,932 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:50:56,932 INFO L495 AbstractCegarLoop]: Abstraction has 22 states and 21 transitions. [2023-11-26 11:50:56,932 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 8 states have (on average 1.75) internal successors, (14), 8 states have internal predecessors, (14), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-26 11:50:56,933 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 21 transitions. [2023-11-26 11:50:56,933 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2023-11-26 11:50:56,933 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:50:56,933 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:50:56,942 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_529e1300-3e22-4609-a8ef-a8f5dddd66f7/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 (20)] Forceful destruction successful, exit code 0 [2023-11-26 11:50:57,134 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_529e1300-3e22-4609-a8ef-a8f5dddd66f7/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 11:50:57,134 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 10 more)] === [2023-11-26 11:50:57,134 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:50:57,134 INFO L85 PathProgramCache]: Analyzing trace with hash -1896649826, now seen corresponding path program 1 times [2023-11-26 11:50:57,135 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-26 11:50:57,135 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1544009539] [2023-11-26 11:50:57,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:50:57,135 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 11:50:57,135 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_529e1300-3e22-4609-a8ef-a8f5dddd66f7/bin/uautomizer-verify-VRDe98Ueme/mathsat [2023-11-26 11:50:57,136 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_529e1300-3e22-4609-a8ef-a8f5dddd66f7/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 11:50:57,137 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_529e1300-3e22-4609-a8ef-a8f5dddd66f7/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 (21)] Waiting until timeout for monitored process [2023-11-26 11:50:57,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:50:57,227 INFO L262 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 16 conjunts are in the unsatisfiable core [2023-11-26 11:50:57,229 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:50:57,252 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 11:50:57,390 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 15 treesize of output 1 [2023-11-26 11:50:57,434 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2023-11-26 11:50:57,458 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 11:50:57,458 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 11:50:57,458 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-26 11:50:57,458 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1544009539] [2023-11-26 11:50:57,458 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1544009539] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:50:57,458 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:50:57,459 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-26 11:50:57,459 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [818016518] [2023-11-26 11:50:57,459 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:50:57,459 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-26 11:50:57,459 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-26 11:50:57,460 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-26 11:50:57,460 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2023-11-26 11:50:57,460 INFO L87 Difference]: Start difference. First operand 22 states and 21 transitions. Second operand has 9 states, 7 states have (on average 2.142857142857143) internal successors, (15), 8 states have internal predecessors, (15), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-26 11:50:57,647 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:50:57,647 INFO L93 Difference]: Finished difference Result 21 states and 20 transitions. [2023-11-26 11:50:57,648 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-26 11:50:57,648 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 7 states have (on average 2.142857142857143) internal successors, (15), 8 states have internal predecessors, (15), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 17 [2023-11-26 11:50:57,648 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:50:57,649 INFO L225 Difference]: With dead ends: 21 [2023-11-26 11:50:57,649 INFO L226 Difference]: Without dead ends: 21 [2023-11-26 11:50:57,649 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2023-11-26 11:50:57,649 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 9 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 72 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 72 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-26 11:50:57,650 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 34 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 72 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-26 11:50:57,650 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2023-11-26 11:50:57,651 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2023-11-26 11:50:57,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 17 states have (on average 1.0588235294117647) internal successors, (18), 18 states have internal predecessors, (18), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-26 11:50:57,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 20 transitions. [2023-11-26 11:50:57,651 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 20 transitions. Word has length 17 [2023-11-26 11:50:57,652 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:50:57,652 INFO L495 AbstractCegarLoop]: Abstraction has 21 states and 20 transitions. [2023-11-26 11:50:57,652 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 7 states have (on average 2.142857142857143) internal successors, (15), 8 states have internal predecessors, (15), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-26 11:50:57,652 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 20 transitions. [2023-11-26 11:50:57,652 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2023-11-26 11:50:57,652 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:50:57,652 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:50:57,655 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_529e1300-3e22-4609-a8ef-a8f5dddd66f7/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 (21)] Forceful destruction successful, exit code 0 [2023-11-26 11:50:57,853 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_529e1300-3e22-4609-a8ef-a8f5dddd66f7/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 11:50:57,853 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 10 more)] === [2023-11-26 11:50:57,853 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:50:57,854 INFO L85 PathProgramCache]: Analyzing trace with hash 1333398219, now seen corresponding path program 1 times [2023-11-26 11:50:57,854 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-26 11:50:57,854 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [741595855] [2023-11-26 11:50:57,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:50:57,854 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 11:50:57,854 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_529e1300-3e22-4609-a8ef-a8f5dddd66f7/bin/uautomizer-verify-VRDe98Ueme/mathsat [2023-11-26 11:50:57,855 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_529e1300-3e22-4609-a8ef-a8f5dddd66f7/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 11:50:57,856 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_529e1300-3e22-4609-a8ef-a8f5dddd66f7/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 (22)] Waiting until timeout for monitored process [2023-11-26 11:50:57,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:50:57,950 INFO L262 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 21 conjunts are in the unsatisfiable core [2023-11-26 11:50:57,953 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:50:58,071 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2023-11-26 11:50:58,072 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2023-11-26 11:50:58,239 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 15 treesize of output 1 [2023-11-26 11:50:58,336 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 8 [2023-11-26 11:50:58,417 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 13 [2023-11-26 11:50:58,441 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 11:50:58,442 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 11:50:58,442 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-26 11:50:58,442 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [741595855] [2023-11-26 11:50:58,442 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [741595855] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:50:58,442 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:50:58,443 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-11-26 11:50:58,443 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [280462150] [2023-11-26 11:50:58,443 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:50:58,444 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-26 11:50:58,444 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-26 11:50:58,445 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-26 11:50:58,445 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2023-11-26 11:50:58,445 INFO L87 Difference]: Start difference. First operand 21 states and 20 transitions. Second operand has 11 states, 9 states have (on average 1.7777777777777777) internal successors, (16), 9 states have internal predecessors, (16), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-26 11:50:58,887 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:50:58,887 INFO L93 Difference]: Finished difference Result 20 states and 19 transitions. [2023-11-26 11:50:58,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-26 11:50:58,888 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 9 states have (on average 1.7777777777777777) internal successors, (16), 9 states have internal predecessors, (16), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 18 [2023-11-26 11:50:58,888 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:50:58,889 INFO L225 Difference]: With dead ends: 20 [2023-11-26 11:50:58,889 INFO L226 Difference]: Without dead ends: 20 [2023-11-26 11:50:58,889 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=64, Invalid=242, Unknown=0, NotChecked=0, Total=306 [2023-11-26 11:50:58,891 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 24 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 96 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 32 SdHoareTripleChecker+Invalid, 105 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 96 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-26 11:50:58,891 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 32 Invalid, 105 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 96 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-26 11:50:58,892 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2023-11-26 11:50:58,892 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2023-11-26 11:50:58,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 17 states have (on average 1.0) internal successors, (17), 17 states have internal predecessors, (17), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-26 11:50:58,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 19 transitions. [2023-11-26 11:50:58,893 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 19 transitions. Word has length 18 [2023-11-26 11:50:58,893 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:50:58,893 INFO L495 AbstractCegarLoop]: Abstraction has 20 states and 19 transitions. [2023-11-26 11:50:58,893 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 9 states have (on average 1.7777777777777777) internal successors, (16), 9 states have internal predecessors, (16), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-26 11:50:58,894 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 19 transitions. [2023-11-26 11:50:58,894 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2023-11-26 11:50:58,894 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:50:58,894 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:50:58,899 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_529e1300-3e22-4609-a8ef-a8f5dddd66f7/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 (22)] Forceful destruction successful, exit code 0 [2023-11-26 11:50:59,097 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_529e1300-3e22-4609-a8ef-a8f5dddd66f7/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 11:50:59,097 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 10 more)] === [2023-11-26 11:50:59,098 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:50:59,098 INFO L85 PathProgramCache]: Analyzing trace with hash -1614327640, now seen corresponding path program 1 times [2023-11-26 11:50:59,098 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-26 11:50:59,098 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1919351978] [2023-11-26 11:50:59,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:50:59,098 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 11:50:59,098 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_529e1300-3e22-4609-a8ef-a8f5dddd66f7/bin/uautomizer-verify-VRDe98Ueme/mathsat [2023-11-26 11:50:59,100 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_529e1300-3e22-4609-a8ef-a8f5dddd66f7/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 11:50:59,122 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_529e1300-3e22-4609-a8ef-a8f5dddd66f7/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 (23)] Waiting until timeout for monitored process [2023-11-26 11:50:59,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:50:59,203 INFO L262 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 21 conjunts are in the unsatisfiable core [2023-11-26 11:50:59,205 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:50:59,486 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 15 treesize of output 1 [2023-11-26 11:50:59,593 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 17 [2023-11-26 11:50:59,667 WARN L876 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_disconnect_6_#t~mem47#1.base_14| (_ BitVec 32))) (and (= (select |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_disconnect_6_#t~mem47#1.base_14|) (_ bv0 1)) (= (store |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_disconnect_6_#t~mem47#1.base_14| (_ bv0 1)) |c_#valid|))) is different from true [2023-11-26 11:50:59,676 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 11:50:59,676 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 11:50:59,677 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-26 11:50:59,677 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1919351978] [2023-11-26 11:50:59,677 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1919351978] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:50:59,677 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:50:59,677 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-11-26 11:50:59,678 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [279349788] [2023-11-26 11:50:59,678 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:50:59,678 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-26 11:50:59,679 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-26 11:50:59,679 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-26 11:50:59,680 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=74, Unknown=1, NotChecked=16, Total=110 [2023-11-26 11:50:59,680 INFO L87 Difference]: Start difference. First operand 20 states and 19 transitions. Second operand has 11 states, 9 states have (on average 1.8888888888888888) internal successors, (17), 9 states have internal predecessors, (17), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-26 11:51:00,180 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:51:00,181 INFO L93 Difference]: Finished difference Result 19 states and 18 transitions. [2023-11-26 11:51:00,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-11-26 11:51:00,184 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 9 states have (on average 1.8888888888888888) internal successors, (17), 9 states have internal predecessors, (17), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 19 [2023-11-26 11:51:00,184 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:51:00,184 INFO L225 Difference]: With dead ends: 19 [2023-11-26 11:51:00,184 INFO L226 Difference]: Without dead ends: 0 [2023-11-26 11:51:00,185 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=41, Invalid=172, Unknown=1, NotChecked=26, Total=240 [2023-11-26 11:51:00,185 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 8 mSDsluCounter, 30 mSDsCounter, 0 mSdLazyCounter, 100 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 36 SdHoareTripleChecker+Invalid, 118 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 100 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 16 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-26 11:51:00,186 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 36 Invalid, 118 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 100 Invalid, 0 Unknown, 16 Unchecked, 0.3s Time] [2023-11-26 11:51:00,186 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2023-11-26 11:51:00,186 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2023-11-26 11:51:00,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 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 11:51:00,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2023-11-26 11:51:00,187 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 19 [2023-11-26 11:51:00,187 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:51:00,187 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-11-26 11:51:00,188 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 9 states have (on average 1.8888888888888888) internal successors, (17), 9 states have internal predecessors, (17), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-26 11:51:00,188 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2023-11-26 11:51:00,188 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2023-11-26 11:51:00,191 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (12 of 13 remaining) [2023-11-26 11:51:00,192 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (11 of 13 remaining) [2023-11-26 11:51:00,192 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (10 of 13 remaining) [2023-11-26 11:51:00,192 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_FREE (9 of 13 remaining) [2023-11-26 11:51:00,192 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_FREE (8 of 13 remaining) [2023-11-26 11:51:00,193 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 13 remaining) [2023-11-26 11:51:00,193 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 13 remaining) [2023-11-26 11:51:00,193 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_FREE (5 of 13 remaining) [2023-11-26 11:51:00,193 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_FREE (4 of 13 remaining) [2023-11-26 11:51:00,194 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_FREE (3 of 13 remaining) [2023-11-26 11:51:00,194 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE (2 of 13 remaining) [2023-11-26 11:51:00,194 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE (1 of 13 remaining) [2023-11-26 11:51:00,194 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK (0 of 13 remaining) [2023-11-26 11:51:00,197 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_529e1300-3e22-4609-a8ef-a8f5dddd66f7/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 (23)] Forceful destruction successful, exit code 0 [2023-11-26 11:51:00,397 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_529e1300-3e22-4609-a8ef-a8f5dddd66f7/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 11:51:00,399 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:51:00,401 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-26 11:51:00,404 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.11 11:51:00 BoogieIcfgContainer [2023-11-26 11:51:00,404 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-26 11:51:00,404 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-26 11:51:00,404 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-26 11:51:00,405 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-26 11:51:00,405 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 11:50:44" (3/4) ... [2023-11-26 11:51:00,406 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-11-26 11:51:00,409 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure ldv_malloc [2023-11-26 11:51:00,414 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 15 nodes and edges [2023-11-26 11:51:00,414 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2023-11-26 11:51:00,415 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2023-11-26 11:51:00,529 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_529e1300-3e22-4609-a8ef-a8f5dddd66f7/bin/uautomizer-verify-VRDe98Ueme/witness.graphml [2023-11-26 11:51:00,530 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_529e1300-3e22-4609-a8ef-a8f5dddd66f7/bin/uautomizer-verify-VRDe98Ueme/witness.yml [2023-11-26 11:51:00,530 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-26 11:51:00,531 INFO L158 Benchmark]: Toolchain (without parser) took 17499.35ms. Allocated memory was 81.8MB in the beginning and 134.2MB in the end (delta: 52.4MB). Free memory was 55.8MB in the beginning and 44.4MB in the end (delta: 11.4MB). Peak memory consumption was 65.5MB. Max. memory is 16.1GB. [2023-11-26 11:51:00,532 INFO L158 Benchmark]: CDTParser took 0.39ms. Allocated memory is still 81.8MB. Free memory is still 57.4MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-26 11:51:00,532 INFO L158 Benchmark]: CACSL2BoogieTranslator took 925.78ms. Allocated memory was 81.8MB in the beginning and 111.1MB in the end (delta: 29.4MB). Free memory was 55.8MB in the beginning and 82.0MB in the end (delta: -26.2MB). Peak memory consumption was 28.3MB. Max. memory is 16.1GB. [2023-11-26 11:51:00,532 INFO L158 Benchmark]: Boogie Procedure Inliner took 107.49ms. Allocated memory is still 111.1MB. Free memory was 82.0MB in the beginning and 79.4MB in the end (delta: 2.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-26 11:51:00,533 INFO L158 Benchmark]: Boogie Preprocessor took 117.74ms. Allocated memory is still 111.1MB. Free memory was 79.4MB in the beginning and 77.0MB in the end (delta: 2.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-26 11:51:00,533 INFO L158 Benchmark]: RCFGBuilder took 750.82ms. Allocated memory is still 111.1MB. Free memory was 77.0MB in the beginning and 59.5MB in the end (delta: 17.5MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2023-11-26 11:51:00,534 INFO L158 Benchmark]: TraceAbstraction took 15462.20ms. Allocated memory was 111.1MB in the beginning and 134.2MB in the end (delta: 23.1MB). Free memory was 58.6MB in the beginning and 49.6MB in the end (delta: 9.0MB). Peak memory consumption was 30.9MB. Max. memory is 16.1GB. [2023-11-26 11:51:00,534 INFO L158 Benchmark]: Witness Printer took 126.14ms. Allocated memory is still 134.2MB. Free memory was 49.6MB in the beginning and 44.4MB in the end (delta: 5.2MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2023-11-26 11:51:00,539 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.39ms. Allocated memory is still 81.8MB. Free memory is still 57.4MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 925.78ms. Allocated memory was 81.8MB in the beginning and 111.1MB in the end (delta: 29.4MB). Free memory was 55.8MB in the beginning and 82.0MB in the end (delta: -26.2MB). Peak memory consumption was 28.3MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 107.49ms. Allocated memory is still 111.1MB. Free memory was 82.0MB in the beginning and 79.4MB in the end (delta: 2.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 117.74ms. Allocated memory is still 111.1MB. Free memory was 79.4MB in the beginning and 77.0MB in the end (delta: 2.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 750.82ms. Allocated memory is still 111.1MB. Free memory was 77.0MB in the beginning and 59.5MB in the end (delta: 17.5MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * TraceAbstraction took 15462.20ms. Allocated memory was 111.1MB in the beginning and 134.2MB in the end (delta: 23.1MB). Free memory was 58.6MB in the beginning and 49.6MB in the end (delta: 9.0MB). Peak memory consumption was 30.9MB. Max. memory is 16.1GB. * Witness Printer took 126.14ms. Allocated memory is still 134.2MB. Free memory was 49.6MB in the beginning and 44.4MB in the end (delta: 5.2MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 777]: free always succeeds For all program executions holds that free always succeeds at this location - PositiveResult [Line: 777]: free always succeeds For all program executions holds that free always succeeds at this location - PositiveResult [Line: 777]: free always succeeds For all program executions holds that free always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 781]: free always succeeds For all program executions holds that free always succeeds at this location - PositiveResult [Line: 781]: free always succeeds For all program executions holds that free always succeeds at this location - PositiveResult [Line: 781]: free always succeeds For all program executions holds that free always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 791]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 36 locations, 13 error locations. Started 1 CEGAR loops. OverallTime: 15.4s, OverallIterations: 22, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 4.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 441 SdHoareTripleChecker+Valid, 2.9s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 441 mSDsluCounter, 1428 SdHoareTripleChecker+Invalid, 2.6s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 138 IncrementalHoareTripleChecker+Unchecked, 973 mSDsCounter, 42 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1279 IncrementalHoareTripleChecker+Invalid, 1459 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 42 mSolverCounterUnsat, 455 mSDtfsCounter, 1279 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 318 GetRequests, 180 SyntacticMatches, 1 SemanticMatches, 137 ConstructedPredicates, 4 IntricatePredicates, 0 DeprecatedPredicates, 93 ImplicationChecksByTransitivity, 2.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=46occurred in iteration=7, InterpolantAutomatonStates: 150, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 22 MinimizatonAttempts, 71 StatesRemovedByMinimization, 13 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.3s SsaConstructionTime, 0.7s SatisfiabilityAnalysisTime, 4.2s InterpolantComputationTime, 299 NumberOfCodeBlocks, 299 NumberOfCodeBlocksAsserted, 22 NumberOfCheckSat, 277 ConstructedInterpolants, 12 QuantifiedInterpolants, 2309 SizeOfPredicates, 87 NumberOfNonLiveVariables, 1360 ConjunctsInSsa, 211 ConjunctsInUnsatCore, 22 InterpolantComputations, 22 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 13 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-11-26 11:51:00,562 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_529e1300-3e22-4609-a8ef-a8f5dddd66f7/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE