./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/ldv-memsafety/memleaks_test17_2-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version cf1a7837 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc559f19-9c13-4756-9979-b92addd167d4/bin/uautomizer-verify-uTZkv6EMXl/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc559f19-9c13-4756-9979-b92addd167d4/bin/uautomizer-verify-uTZkv6EMXl/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc559f19-9c13-4756-9979-b92addd167d4/bin/uautomizer-verify-uTZkv6EMXl/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc559f19-9c13-4756-9979-b92addd167d4/bin/uautomizer-verify-uTZkv6EMXl/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/ldv-memsafety/memleaks_test17_2-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc559f19-9c13-4756-9979-b92addd167d4/bin/uautomizer-verify-uTZkv6EMXl/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc559f19-9c13-4756-9979-b92addd167d4/bin/uautomizer-verify-uTZkv6EMXl --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 143a30a80a62e6cad7506820b1f96be933051e37975b620c656decb608437802 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-cf1a783 [2023-11-12 02:08:06,599 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-12 02:08:06,704 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc559f19-9c13-4756-9979-b92addd167d4/bin/uautomizer-verify-uTZkv6EMXl/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2023-11-12 02:08:06,714 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-12 02:08:06,715 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-12 02:08:06,752 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-12 02:08:06,753 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-12 02:08:06,754 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-12 02:08:06,755 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-12 02:08:06,760 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-12 02:08:06,762 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-12 02:08:06,763 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-12 02:08:06,763 INFO L153 SettingsManager]: * Use SBE=true [2023-11-12 02:08:06,765 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-12 02:08:06,766 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-12 02:08:06,766 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-12 02:08:06,767 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-12 02:08:06,767 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-12 02:08:06,767 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-12 02:08:06,768 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-12 02:08:06,768 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-12 02:08:06,769 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-12 02:08:06,769 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-12 02:08:06,770 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-12 02:08:06,770 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-12 02:08:06,771 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-12 02:08:06,772 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-12 02:08:06,772 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-12 02:08:06,773 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-12 02:08:06,773 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 02:08:06,775 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-12 02:08:06,775 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-12 02:08:06,775 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-12 02:08:06,775 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-12 02:08:06,776 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-12 02:08:06,776 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-12 02:08:06,776 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-12 02:08:06,776 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-12 02:08:06,777 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_fc559f19-9c13-4756-9979-b92addd167d4/bin/uautomizer-verify-uTZkv6EMXl/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc559f19-9c13-4756-9979-b92addd167d4/bin/uautomizer-verify-uTZkv6EMXl Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 143a30a80a62e6cad7506820b1f96be933051e37975b620c656decb608437802 [2023-11-12 02:08:07,122 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-12 02:08:07,153 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-12 02:08:07,157 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-12 02:08:07,158 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-12 02:08:07,159 INFO L274 PluginConnector]: CDTParser initialized [2023-11-12 02:08:07,160 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc559f19-9c13-4756-9979-b92addd167d4/bin/uautomizer-verify-uTZkv6EMXl/../../sv-benchmarks/c/ldv-memsafety/memleaks_test17_2-1.i [2023-11-12 02:08:10,238 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-12 02:08:10,548 INFO L384 CDTParser]: Found 1 translation units. [2023-11-12 02:08:10,548 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc559f19-9c13-4756-9979-b92addd167d4/sv-benchmarks/c/ldv-memsafety/memleaks_test17_2-1.i [2023-11-12 02:08:10,588 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc559f19-9c13-4756-9979-b92addd167d4/bin/uautomizer-verify-uTZkv6EMXl/data/baf0dd0d3/ce56e364a2ba4c22b6cfb6d5c270395d/FLAGd69e6d576 [2023-11-12 02:08:10,609 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc559f19-9c13-4756-9979-b92addd167d4/bin/uautomizer-verify-uTZkv6EMXl/data/baf0dd0d3/ce56e364a2ba4c22b6cfb6d5c270395d [2023-11-12 02:08:10,616 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-12 02:08:10,619 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-12 02:08:10,623 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-12 02:08:10,623 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-12 02:08:10,630 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-12 02:08:10,632 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 02:08:10" (1/1) ... [2023-11-12 02:08:10,634 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@53a61e41 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:08:10, skipping insertion in model container [2023-11-12 02:08:10,634 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 02:08:10" (1/1) ... [2023-11-12 02:08:10,695 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-12 02:08:11,147 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 02:08:11,171 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) [2023-11-12 02:08:11,172 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@2b1a5346 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:08:11, skipping insertion in model container [2023-11-12 02:08:11,172 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-12 02:08:11,173 INFO L186 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2023-11-12 02:08:11,175 INFO L158 Benchmark]: Toolchain (without parser) took 555.24ms. Allocated memory is still 157.3MB. Free memory was 114.4MB in the beginning and 99.8MB in the end (delta: 14.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2023-11-12 02:08:11,175 INFO L158 Benchmark]: CDTParser took 0.29ms. Allocated memory is still 157.3MB. Free memory is still 129.6MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-12 02:08:11,177 INFO L158 Benchmark]: CACSL2BoogieTranslator took 549.63ms. Allocated memory is still 157.3MB. Free memory was 114.4MB in the beginning and 100.3MB in the end (delta: 14.1MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2023-11-12 02:08:11,179 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29ms. Allocated memory is still 157.3MB. Free memory is still 129.6MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 549.63ms. Allocated memory is still 157.3MB. Free memory was 114.4MB in the beginning and 100.3MB in the end (delta: 14.1MB). 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-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc559f19-9c13-4756-9979-b92addd167d4/bin/uautomizer-verify-uTZkv6EMXl/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc559f19-9c13-4756-9979-b92addd167d4/bin/uautomizer-verify-uTZkv6EMXl/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc559f19-9c13-4756-9979-b92addd167d4/bin/uautomizer-verify-uTZkv6EMXl/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc559f19-9c13-4756-9979-b92addd167d4/bin/uautomizer-verify-uTZkv6EMXl/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/ldv-memsafety/memleaks_test17_2-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc559f19-9c13-4756-9979-b92addd167d4/bin/uautomizer-verify-uTZkv6EMXl/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc559f19-9c13-4756-9979-b92addd167d4/bin/uautomizer-verify-uTZkv6EMXl --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 143a30a80a62e6cad7506820b1f96be933051e37975b620c656decb608437802 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-cf1a783 [2023-11-12 02:08:13,644 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-12 02:08:13,774 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc559f19-9c13-4756-9979-b92addd167d4/bin/uautomizer-verify-uTZkv6EMXl/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2023-11-12 02:08:13,784 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-12 02:08:13,785 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-12 02:08:13,841 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-12 02:08:13,842 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-12 02:08:13,843 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-12 02:08:13,844 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-12 02:08:13,849 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-12 02:08:13,850 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-12 02:08:13,850 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-12 02:08:13,851 INFO L153 SettingsManager]: * Use SBE=true [2023-11-12 02:08:13,853 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-12 02:08:13,853 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-12 02:08:13,854 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-12 02:08:13,854 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-12 02:08:13,855 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-12 02:08:13,855 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-12 02:08:13,856 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-12 02:08:13,857 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-12 02:08:13,857 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-12 02:08:13,858 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-12 02:08:13,858 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-11-12 02:08:13,858 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-11-12 02:08:13,859 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-12 02:08:13,859 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-12 02:08:13,860 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-12 02:08:13,861 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-12 02:08:13,861 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-12 02:08:13,862 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-12 02:08:13,863 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 02:08:13,863 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-12 02:08:13,864 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-12 02:08:13,864 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2023-11-12 02:08:13,864 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-11-12 02:08:13,864 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-12 02:08:13,865 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-12 02:08:13,865 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-12 02:08:13,866 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2023-11-12 02:08:13,866 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-12 02:08:13,866 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_fc559f19-9c13-4756-9979-b92addd167d4/bin/uautomizer-verify-uTZkv6EMXl/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc559f19-9c13-4756-9979-b92addd167d4/bin/uautomizer-verify-uTZkv6EMXl Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 143a30a80a62e6cad7506820b1f96be933051e37975b620c656decb608437802 [2023-11-12 02:08:14,246 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-12 02:08:14,267 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-12 02:08:14,270 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-12 02:08:14,271 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-12 02:08:14,272 INFO L274 PluginConnector]: CDTParser initialized [2023-11-12 02:08:14,273 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc559f19-9c13-4756-9979-b92addd167d4/bin/uautomizer-verify-uTZkv6EMXl/../../sv-benchmarks/c/ldv-memsafety/memleaks_test17_2-1.i [2023-11-12 02:08:17,631 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-12 02:08:18,066 INFO L384 CDTParser]: Found 1 translation units. [2023-11-12 02:08:18,067 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc559f19-9c13-4756-9979-b92addd167d4/sv-benchmarks/c/ldv-memsafety/memleaks_test17_2-1.i [2023-11-12 02:08:18,095 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc559f19-9c13-4756-9979-b92addd167d4/bin/uautomizer-verify-uTZkv6EMXl/data/afb1f2a20/93450b71164045e29b98383d6e65e529/FLAG17e62302d [2023-11-12 02:08:18,113 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc559f19-9c13-4756-9979-b92addd167d4/bin/uautomizer-verify-uTZkv6EMXl/data/afb1f2a20/93450b71164045e29b98383d6e65e529 [2023-11-12 02:08:18,119 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-12 02:08:18,122 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-12 02:08:18,124 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-12 02:08:18,124 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-12 02:08:18,130 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-12 02:08:18,130 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 02:08:18" (1/1) ... [2023-11-12 02:08:18,132 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@bb1c44d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:08:18, skipping insertion in model container [2023-11-12 02:08:18,132 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 02:08:18" (1/1) ... [2023-11-12 02:08:18,206 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-12 02:08:18,729 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 02:08:18,752 INFO L199 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2023-11-12 02:08:18,762 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-12 02:08:18,818 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 02:08:18,827 INFO L202 MainTranslator]: Completed pre-run [2023-11-12 02:08:18,890 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 02:08:18,944 WARN L672 CHandler]: The function release is called, but not defined or handled by StandardFunctionHandler. [2023-11-12 02:08:18,953 INFO L206 MainTranslator]: Completed translation [2023-11-12 02:08:18,953 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:08:18 WrapperNode [2023-11-12 02:08:18,954 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-12 02:08:18,955 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-12 02:08:18,955 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-12 02:08:18,955 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-12 02:08:18,963 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:08:18" (1/1) ... [2023-11-12 02:08:19,000 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:08:18" (1/1) ... [2023-11-12 02:08:19,025 INFO L138 Inliner]: procedures = 167, calls = 78, calls flagged for inlining = 23, calls inlined = 5, statements flattened = 85 [2023-11-12 02:08:19,026 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-12 02:08:19,027 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-12 02:08:19,027 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-12 02:08:19,027 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-12 02:08:19,035 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:08:18" (1/1) ... [2023-11-12 02:08:19,035 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:08:18" (1/1) ... [2023-11-12 02:08:19,039 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:08:18" (1/1) ... [2023-11-12 02:08:19,040 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:08:18" (1/1) ... [2023-11-12 02:08:19,050 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:08:18" (1/1) ... [2023-11-12 02:08:19,054 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:08:18" (1/1) ... [2023-11-12 02:08:19,056 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:08:18" (1/1) ... [2023-11-12 02:08:19,058 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:08:18" (1/1) ... [2023-11-12 02:08:19,062 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-12 02:08:19,063 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-12 02:08:19,063 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-12 02:08:19,063 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-12 02:08:19,064 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:08:18" (1/1) ... [2023-11-12 02:08:19,070 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 02:08:19,088 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc559f19-9c13-4756-9979-b92addd167d4/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:08:19,100 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc559f19-9c13-4756-9979-b92addd167d4/bin/uautomizer-verify-uTZkv6EMXl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-12 02:08:19,113 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc559f19-9c13-4756-9979-b92addd167d4/bin/uautomizer-verify-uTZkv6EMXl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-12 02:08:19,138 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2023-11-12 02:08:19,138 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2023-11-12 02:08:19,138 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-12 02:08:19,138 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-12 02:08:19,138 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-11-12 02:08:19,139 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-11-12 02:08:19,139 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-12 02:08:19,139 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2023-11-12 02:08:19,139 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-12 02:08:19,139 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-12 02:08:19,286 INFO L236 CfgBuilder]: Building ICFG [2023-11-12 02:08:19,288 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-12 02:08:19,719 INFO L277 CfgBuilder]: Performing block encoding [2023-11-12 02:08:19,728 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-12 02:08:19,729 INFO L302 CfgBuilder]: Removed 4 assume(true) statements. [2023-11-12 02:08:19,731 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 02:08:19 BoogieIcfgContainer [2023-11-12 02:08:19,731 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-12 02:08:19,734 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-12 02:08:19,735 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-12 02:08:19,738 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-12 02:08:19,739 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 02:08:18" (1/3) ... [2023-11-12 02:08:19,740 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@53fe3540 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 02:08:19, skipping insertion in model container [2023-11-12 02:08:19,741 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:08:18" (2/3) ... [2023-11-12 02:08:19,742 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@53fe3540 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 02:08:19, skipping insertion in model container [2023-11-12 02:08:19,742 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 02:08:19" (3/3) ... [2023-11-12 02:08:19,744 INFO L112 eAbstractionObserver]: Analyzing ICFG memleaks_test17_2-1.i [2023-11-12 02:08:19,765 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-12 02:08:19,766 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 18 error locations. [2023-11-12 02:08:19,826 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-12 02:08:19,835 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;@7e2a6851, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-12 02:08:19,835 INFO L358 AbstractCegarLoop]: Starting to check reachability of 18 error locations. [2023-11-12 02:08:19,840 INFO L276 IsEmpty]: Start isEmpty. Operand has 60 states, 38 states have (on average 1.763157894736842) internal successors, (67), 56 states have internal predecessors, (67), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-12 02:08:19,850 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2023-11-12 02:08:19,850 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:08:19,851 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:08:19,852 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr17ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] === [2023-11-12 02:08:19,860 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:08:19,860 INFO L85 PathProgramCache]: Analyzing trace with hash -1738627285, now seen corresponding path program 1 times [2023-11-12 02:08:19,874 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-12 02:08:19,875 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [649299156] [2023-11-12 02:08:19,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:08:19,876 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 [2023-11-12 02:08:19,876 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc559f19-9c13-4756-9979-b92addd167d4/bin/uautomizer-verify-uTZkv6EMXl/mathsat [2023-11-12 02:08:19,884 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc559f19-9c13-4756-9979-b92addd167d4/bin/uautomizer-verify-uTZkv6EMXl/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) [2023-11-12 02:08:19,928 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc559f19-9c13-4756-9979-b92addd167d4/bin/uautomizer-verify-uTZkv6EMXl/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 [2023-11-12 02:08:19,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:08:20,002 INFO L262 TraceCheckSpWp]: Trace formula consists of 39 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-12 02:08:20,011 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 02:08:20,113 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:08:20,113 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-12 02:08:20,114 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-12 02:08:20,114 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [649299156] [2023-11-12 02:08:20,115 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [649299156] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:08:20,116 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:08:20,116 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-12 02:08:20,119 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [122456059] [2023-11-12 02:08:20,120 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:08:20,124 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-12 02:08:20,125 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-12 02:08:20,163 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-12 02:08:20,164 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-12 02:08:20,167 INFO L87 Difference]: Start difference. First operand has 60 states, 38 states have (on average 1.763157894736842) internal successors, (67), 56 states have internal predecessors, (67), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) 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) [2023-11-12 02:08:20,319 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:08:20,320 INFO L93 Difference]: Finished difference Result 110 states and 126 transitions. [2023-11-12 02:08:20,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-12 02:08:20,323 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 [2023-11-12 02:08:20,323 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:08:20,332 INFO L225 Difference]: With dead ends: 110 [2023-11-12 02:08:20,332 INFO L226 Difference]: Without dead ends: 108 [2023-11-12 02:08:20,334 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 [2023-11-12 02:08:20,337 INFO L413 NwaCegarLoop]: 57 mSDtfsCounter, 51 mSDsluCounter, 162 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 219 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-12 02:08:20,338 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [53 Valid, 219 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-12 02:08:20,369 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2023-11-12 02:08:20,393 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 62. [2023-11-12 02:08:20,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62 states, 40 states have (on average 1.6) internal successors, (64), 57 states have internal predecessors, (64), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2023-11-12 02:08:20,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 70 transitions. [2023-11-12 02:08:20,398 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 70 transitions. Word has length 11 [2023-11-12 02:08:20,398 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:08:20,399 INFO L495 AbstractCegarLoop]: Abstraction has 62 states and 70 transitions. [2023-11-12 02:08:20,399 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) [2023-11-12 02:08:20,399 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 70 transitions. [2023-11-12 02:08:20,400 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2023-11-12 02:08:20,401 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:08:20,401 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:08:20,420 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc559f19-9c13-4756-9979-b92addd167d4/bin/uautomizer-verify-uTZkv6EMXl/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Ended with exit code 0 [2023-11-12 02:08:20,613 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc559f19-9c13-4756-9979-b92addd167d4/bin/uautomizer-verify-uTZkv6EMXl/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 [2023-11-12 02:08:20,613 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] === [2023-11-12 02:08:20,614 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:08:20,614 INFO L85 PathProgramCache]: Analyzing trace with hash -1738628211, now seen corresponding path program 1 times [2023-11-12 02:08:20,617 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-12 02:08:20,618 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [682965012] [2023-11-12 02:08:20,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:08:20,620 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 [2023-11-12 02:08:20,621 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc559f19-9c13-4756-9979-b92addd167d4/bin/uautomizer-verify-uTZkv6EMXl/mathsat [2023-11-12 02:08:20,622 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc559f19-9c13-4756-9979-b92addd167d4/bin/uautomizer-verify-uTZkv6EMXl/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) [2023-11-12 02:08:20,631 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc559f19-9c13-4756-9979-b92addd167d4/bin/uautomizer-verify-uTZkv6EMXl/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 [2023-11-12 02:08:20,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:08:20,685 INFO L262 TraceCheckSpWp]: Trace formula consists of 39 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-12 02:08:20,687 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 02:08:20,720 INFO L351 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 [2023-11-12 02:08:20,767 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:08:20,767 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-12 02:08:20,768 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-12 02:08:20,768 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [682965012] [2023-11-12 02:08:20,768 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [682965012] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:08:20,769 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:08:20,769 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-12 02:08:20,769 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [782626809] [2023-11-12 02:08:20,769 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:08:20,770 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-12 02:08:20,771 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-12 02:08:20,771 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-12 02:08:20,772 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-12 02:08:20,772 INFO L87 Difference]: Start difference. First operand 62 states and 70 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) [2023-11-12 02:08:21,024 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:08:21,024 INFO L93 Difference]: Finished difference Result 97 states and 111 transitions. [2023-11-12 02:08:21,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-12 02:08:21,026 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 [2023-11-12 02:08:21,026 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:08:21,028 INFO L225 Difference]: With dead ends: 97 [2023-11-12 02:08:21,028 INFO L226 Difference]: Without dead ends: 97 [2023-11-12 02:08:21,028 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 [2023-11-12 02:08:21,030 INFO L413 NwaCegarLoop]: 49 mSDtfsCounter, 35 mSDsluCounter, 107 mSDsCounter, 0 mSdLazyCounter, 105 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 156 SdHoareTripleChecker+Invalid, 107 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 105 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-12 02:08:21,031 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 156 Invalid, 107 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 105 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-12 02:08:21,032 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2023-11-12 02:08:21,050 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 75. [2023-11-12 02:08:21,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75 states, 53 states have (on average 1.5849056603773586) internal successors, (84), 70 states have internal predecessors, (84), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2023-11-12 02:08:21,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 90 transitions. [2023-11-12 02:08:21,057 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 90 transitions. Word has length 11 [2023-11-12 02:08:21,058 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:08:21,058 INFO L495 AbstractCegarLoop]: Abstraction has 75 states and 90 transitions. [2023-11-12 02:08:21,059 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) [2023-11-12 02:08:21,059 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 90 transitions. [2023-11-12 02:08:21,060 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2023-11-12 02:08:21,060 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:08:21,061 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:08:21,081 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc559f19-9c13-4756-9979-b92addd167d4/bin/uautomizer-verify-uTZkv6EMXl/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2023-11-12 02:08:21,272 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc559f19-9c13-4756-9979-b92addd167d4/bin/uautomizer-verify-uTZkv6EMXl/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 [2023-11-12 02:08:21,272 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] === [2023-11-12 02:08:21,273 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:08:21,273 INFO L85 PathProgramCache]: Analyzing trace with hash -1738628210, now seen corresponding path program 1 times [2023-11-12 02:08:21,274 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-12 02:08:21,274 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [157390922] [2023-11-12 02:08:21,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:08:21,274 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 [2023-11-12 02:08:21,274 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc559f19-9c13-4756-9979-b92addd167d4/bin/uautomizer-verify-uTZkv6EMXl/mathsat [2023-11-12 02:08:21,312 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc559f19-9c13-4756-9979-b92addd167d4/bin/uautomizer-verify-uTZkv6EMXl/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) [2023-11-12 02:08:21,314 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc559f19-9c13-4756-9979-b92addd167d4/bin/uautomizer-verify-uTZkv6EMXl/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 [2023-11-12 02:08:21,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:08:21,379 INFO L262 TraceCheckSpWp]: Trace formula consists of 39 conjuncts, 12 conjunts are in the unsatisfiable core [2023-11-12 02:08:21,382 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 02:08:21,411 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-11-12 02:08:21,561 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:08:21,562 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-12 02:08:21,562 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-12 02:08:21,562 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [157390922] [2023-11-12 02:08:21,562 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [157390922] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:08:21,562 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:08:21,562 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-12 02:08:21,563 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1167793087] [2023-11-12 02:08:21,563 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:08:21,563 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-12 02:08:21,563 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-12 02:08:21,564 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-12 02:08:21,565 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2023-11-12 02:08:21,565 INFO L87 Difference]: Start difference. First operand 75 states and 90 transitions. Second operand has 8 states, 6 states have (on average 1.5) internal successors, (9), 7 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) [2023-11-12 02:08:22,106 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:08:22,106 INFO L93 Difference]: Finished difference Result 125 states and 149 transitions. [2023-11-12 02:08:22,107 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-12 02:08:22,107 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 6 states have (on average 1.5) internal successors, (9), 7 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 [2023-11-12 02:08:22,108 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:08:22,109 INFO L225 Difference]: With dead ends: 125 [2023-11-12 02:08:22,109 INFO L226 Difference]: Without dead ends: 125 [2023-11-12 02:08:22,110 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2023-11-12 02:08:22,111 INFO L413 NwaCegarLoop]: 81 mSDtfsCounter, 105 mSDsluCounter, 318 mSDsCounter, 0 mSdLazyCounter, 201 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 109 SdHoareTripleChecker+Valid, 399 SdHoareTripleChecker+Invalid, 205 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 201 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-12 02:08:22,112 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [109 Valid, 399 Invalid, 205 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 201 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-12 02:08:22,113 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states. [2023-11-12 02:08:22,123 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 105. [2023-11-12 02:08:22,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 105 states, 83 states have (on average 1.5783132530120483) internal successors, (131), 100 states have internal predecessors, (131), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2023-11-12 02:08:22,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 137 transitions. [2023-11-12 02:08:22,125 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 137 transitions. Word has length 11 [2023-11-12 02:08:22,125 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:08:22,126 INFO L495 AbstractCegarLoop]: Abstraction has 105 states and 137 transitions. [2023-11-12 02:08:22,126 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 6 states have (on average 1.5) internal successors, (9), 7 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) [2023-11-12 02:08:22,126 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 137 transitions. [2023-11-12 02:08:22,127 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2023-11-12 02:08:22,127 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:08:22,127 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:08:22,143 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc559f19-9c13-4756-9979-b92addd167d4/bin/uautomizer-verify-uTZkv6EMXl/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2023-11-12 02:08:22,339 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc559f19-9c13-4756-9979-b92addd167d4/bin/uautomizer-verify-uTZkv6EMXl/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 [2023-11-12 02:08:22,339 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr17ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] === [2023-11-12 02:08:22,340 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:08:22,340 INFO L85 PathProgramCache]: Analyzing trace with hash -851123604, now seen corresponding path program 1 times [2023-11-12 02:08:22,341 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-12 02:08:22,341 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [90170246] [2023-11-12 02:08:22,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:08:22,342 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 [2023-11-12 02:08:22,342 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc559f19-9c13-4756-9979-b92addd167d4/bin/uautomizer-verify-uTZkv6EMXl/mathsat [2023-11-12 02:08:22,343 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc559f19-9c13-4756-9979-b92addd167d4/bin/uautomizer-verify-uTZkv6EMXl/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) [2023-11-12 02:08:22,351 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc559f19-9c13-4756-9979-b92addd167d4/bin/uautomizer-verify-uTZkv6EMXl/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 [2023-11-12 02:08:22,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:08:22,400 INFO L262 TraceCheckSpWp]: Trace formula consists of 33 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-12 02:08:22,401 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 02:08:22,445 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:08:22,445 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-12 02:08:22,445 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-12 02:08:22,445 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [90170246] [2023-11-12 02:08:22,446 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [90170246] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:08:22,446 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:08:22,446 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-12 02:08:22,446 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [139035450] [2023-11-12 02:08:22,446 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:08:22,447 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-12 02:08:22,447 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-12 02:08:22,447 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-12 02:08:22,448 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-12 02:08:22,448 INFO L87 Difference]: Start difference. First operand 105 states and 137 transitions. Second operand has 4 states, 3 states have (on average 3.0) 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) [2023-11-12 02:08:22,582 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:08:22,582 INFO L93 Difference]: Finished difference Result 148 states and 185 transitions. [2023-11-12 02:08:22,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-12 02:08:22,583 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.0) 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 [2023-11-12 02:08:22,584 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:08:22,586 INFO L225 Difference]: With dead ends: 148 [2023-11-12 02:08:22,586 INFO L226 Difference]: Without dead ends: 146 [2023-11-12 02:08:22,586 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-12 02:08:22,588 INFO L413 NwaCegarLoop]: 65 mSDtfsCounter, 46 mSDsluCounter, 97 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 162 SdHoareTripleChecker+Invalid, 65 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-12 02:08:22,588 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [46 Valid, 162 Invalid, 65 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-12 02:08:22,589 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2023-11-12 02:08:22,598 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 105. [2023-11-12 02:08:22,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 105 states, 83 states have (on average 1.5662650602409638) internal successors, (130), 100 states have internal predecessors, (130), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2023-11-12 02:08:22,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 136 transitions. [2023-11-12 02:08:22,601 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 136 transitions. Word has length 11 [2023-11-12 02:08:22,601 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:08:22,601 INFO L495 AbstractCegarLoop]: Abstraction has 105 states and 136 transitions. [2023-11-12 02:08:22,602 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.0) 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) [2023-11-12 02:08:22,602 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 136 transitions. [2023-11-12 02:08:22,603 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2023-11-12 02:08:22,603 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:08:22,603 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:08:22,620 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc559f19-9c13-4756-9979-b92addd167d4/bin/uautomizer-verify-uTZkv6EMXl/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Ended with exit code 0 [2023-11-12 02:08:22,820 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc559f19-9c13-4756-9979-b92addd167d4/bin/uautomizer-verify-uTZkv6EMXl/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 [2023-11-12 02:08:22,820 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] === [2023-11-12 02:08:22,826 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:08:22,827 INFO L85 PathProgramCache]: Analyzing trace with hash -851124530, now seen corresponding path program 1 times [2023-11-12 02:08:22,827 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-12 02:08:22,827 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1571594728] [2023-11-12 02:08:22,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:08:22,828 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 [2023-11-12 02:08:22,828 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc559f19-9c13-4756-9979-b92addd167d4/bin/uautomizer-verify-uTZkv6EMXl/mathsat [2023-11-12 02:08:22,829 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc559f19-9c13-4756-9979-b92addd167d4/bin/uautomizer-verify-uTZkv6EMXl/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) [2023-11-12 02:08:22,837 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc559f19-9c13-4756-9979-b92addd167d4/bin/uautomizer-verify-uTZkv6EMXl/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 [2023-11-12 02:08:22,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:08:22,893 INFO L262 TraceCheckSpWp]: Trace formula consists of 33 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-12 02:08:22,895 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 02:08:22,966 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:08:22,967 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-12 02:08:22,967 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-12 02:08:22,967 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1571594728] [2023-11-12 02:08:22,967 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1571594728] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:08:22,968 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:08:22,968 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-12 02:08:22,968 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1439122077] [2023-11-12 02:08:22,968 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:08:22,969 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-12 02:08:22,969 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-12 02:08:22,969 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-12 02:08:22,970 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-12 02:08:22,970 INFO L87 Difference]: Start difference. First operand 105 states and 136 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) [2023-11-12 02:08:23,021 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:08:23,021 INFO L93 Difference]: Finished difference Result 89 states and 111 transitions. [2023-11-12 02:08:23,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-12 02:08:23,022 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 [2023-11-12 02:08:23,022 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:08:23,023 INFO L225 Difference]: With dead ends: 89 [2023-11-12 02:08:23,024 INFO L226 Difference]: Without dead ends: 87 [2023-11-12 02:08:23,025 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 [2023-11-12 02:08:23,032 INFO L413 NwaCegarLoop]: 66 mSDtfsCounter, 0 mSDsluCounter, 177 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 243 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-12 02:08:23,035 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 243 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-12 02:08:23,036 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2023-11-12 02:08:23,042 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 87. [2023-11-12 02:08:23,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 87 states, 66 states have (on average 1.5757575757575757) internal successors, (104), 83 states have internal predecessors, (104), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-11-12 02:08:23,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 109 transitions. [2023-11-12 02:08:23,044 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 109 transitions. Word has length 11 [2023-11-12 02:08:23,044 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:08:23,044 INFO L495 AbstractCegarLoop]: Abstraction has 87 states and 109 transitions. [2023-11-12 02:08:23,044 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) [2023-11-12 02:08:23,044 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 109 transitions. [2023-11-12 02:08:23,045 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2023-11-12 02:08:23,045 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:08:23,045 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:08:23,056 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc559f19-9c13-4756-9979-b92addd167d4/bin/uautomizer-verify-uTZkv6EMXl/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 [2023-11-12 02:08:23,250 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc559f19-9c13-4756-9979-b92addd167d4/bin/uautomizer-verify-uTZkv6EMXl/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 [2023-11-12 02:08:23,251 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] === [2023-11-12 02:08:23,251 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:08:23,251 INFO L85 PathProgramCache]: Analyzing trace with hash 1832553715, now seen corresponding path program 1 times [2023-11-12 02:08:23,252 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-12 02:08:23,252 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [225586804] [2023-11-12 02:08:23,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:08:23,256 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 [2023-11-12 02:08:23,256 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc559f19-9c13-4756-9979-b92addd167d4/bin/uautomizer-verify-uTZkv6EMXl/mathsat [2023-11-12 02:08:23,257 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc559f19-9c13-4756-9979-b92addd167d4/bin/uautomizer-verify-uTZkv6EMXl/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) [2023-11-12 02:08:23,274 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc559f19-9c13-4756-9979-b92addd167d4/bin/uautomizer-verify-uTZkv6EMXl/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 [2023-11-12 02:08:23,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:08:23,330 INFO L262 TraceCheckSpWp]: Trace formula consists of 54 conjuncts, 13 conjunts are in the unsatisfiable core [2023-11-12 02:08:23,335 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 02:08:23,375 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-11-12 02:08:23,567 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:08:23,567 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-12 02:08:24,442 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:08:24,443 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-12 02:08:24,443 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [225586804] [2023-11-12 02:08:24,443 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [225586804] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-12 02:08:24,443 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-12 02:08:24,443 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2023-11-12 02:08:24,443 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1564522205] [2023-11-12 02:08:24,444 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-12 02:08:24,444 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-11-12 02:08:24,444 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-12 02:08:24,445 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-11-12 02:08:24,445 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=198, Unknown=0, NotChecked=0, Total=240 [2023-11-12 02:08:24,445 INFO L87 Difference]: Start difference. First operand 87 states and 109 transitions. Second operand has 16 states, 13 states have (on average 1.7692307692307692) internal successors, (23), 14 states have internal predecessors, (23), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-12 02:08:26,230 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:08:26,231 INFO L93 Difference]: Finished difference Result 200 states and 233 transitions. [2023-11-12 02:08:26,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-11-12 02:08:26,232 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 13 states have (on average 1.7692307692307692) internal successors, (23), 14 states have internal predecessors, (23), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 14 [2023-11-12 02:08:26,232 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:08:26,233 INFO L225 Difference]: With dead ends: 200 [2023-11-12 02:08:26,234 INFO L226 Difference]: Without dead ends: 200 [2023-11-12 02:08:26,234 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 73 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=114, Invalid=486, Unknown=0, NotChecked=0, Total=600 [2023-11-12 02:08:26,235 INFO L413 NwaCegarLoop]: 43 mSDtfsCounter, 411 mSDsluCounter, 402 mSDsCounter, 0 mSdLazyCounter, 325 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 414 SdHoareTripleChecker+Valid, 445 SdHoareTripleChecker+Invalid, 340 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 325 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-11-12 02:08:26,236 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [414 Valid, 445 Invalid, 340 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 325 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-11-12 02:08:26,237 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 200 states. [2023-11-12 02:08:26,244 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 200 to 96. [2023-11-12 02:08:26,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 96 states, 75 states have (on average 1.5333333333333334) internal successors, (115), 92 states have internal predecessors, (115), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-11-12 02:08:26,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 120 transitions. [2023-11-12 02:08:26,246 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 120 transitions. Word has length 14 [2023-11-12 02:08:26,247 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:08:26,247 INFO L495 AbstractCegarLoop]: Abstraction has 96 states and 120 transitions. [2023-11-12 02:08:26,247 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 13 states have (on average 1.7692307692307692) internal successors, (23), 14 states have internal predecessors, (23), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-12 02:08:26,247 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 120 transitions. [2023-11-12 02:08:26,248 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2023-11-12 02:08:26,248 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:08:26,249 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:08:26,268 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc559f19-9c13-4756-9979-b92addd167d4/bin/uautomizer-verify-uTZkv6EMXl/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 [2023-11-12 02:08:26,460 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc559f19-9c13-4756-9979-b92addd167d4/bin/uautomizer-verify-uTZkv6EMXl/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 [2023-11-12 02:08:26,461 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] === [2023-11-12 02:08:26,461 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:08:26,461 INFO L85 PathProgramCache]: Analyzing trace with hash -68910454, now seen corresponding path program 1 times [2023-11-12 02:08:26,462 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-12 02:08:26,462 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [924635074] [2023-11-12 02:08:26,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:08:26,462 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 [2023-11-12 02:08:26,462 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc559f19-9c13-4756-9979-b92addd167d4/bin/uautomizer-verify-uTZkv6EMXl/mathsat [2023-11-12 02:08:26,463 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc559f19-9c13-4756-9979-b92addd167d4/bin/uautomizer-verify-uTZkv6EMXl/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) [2023-11-12 02:08:26,471 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc559f19-9c13-4756-9979-b92addd167d4/bin/uautomizer-verify-uTZkv6EMXl/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 [2023-11-12 02:08:26,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:08:26,545 INFO L262 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-12 02:08:26,548 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 02:08:26,646 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:08:26,646 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-12 02:08:26,780 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:08:26,781 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-12 02:08:26,781 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [924635074] [2023-11-12 02:08:26,781 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [924635074] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-12 02:08:26,781 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-12 02:08:26,781 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2023-11-12 02:08:26,781 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1872955901] [2023-11-12 02:08:26,781 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-12 02:08:26,782 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-12 02:08:26,782 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-12 02:08:26,783 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-12 02:08:26,783 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2023-11-12 02:08:26,783 INFO L87 Difference]: Start difference. First operand 96 states and 120 transitions. Second operand has 10 states, 10 states have (on average 2.9) internal successors, (29), 10 states have internal predecessors, (29), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-12 02:08:27,034 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:08:27,034 INFO L93 Difference]: Finished difference Result 102 states and 124 transitions. [2023-11-12 02:08:27,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-12 02:08:27,035 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.9) internal successors, (29), 10 states have internal predecessors, (29), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 21 [2023-11-12 02:08:27,035 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:08:27,036 INFO L225 Difference]: With dead ends: 102 [2023-11-12 02:08:27,036 INFO L226 Difference]: Without dead ends: 102 [2023-11-12 02:08:27,037 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=63, Invalid=93, Unknown=0, NotChecked=0, Total=156 [2023-11-12 02:08:27,037 INFO L413 NwaCegarLoop]: 56 mSDtfsCounter, 127 mSDsluCounter, 212 mSDsCounter, 0 mSdLazyCounter, 74 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 128 SdHoareTripleChecker+Valid, 268 SdHoareTripleChecker+Invalid, 77 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 74 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-12 02:08:27,038 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [128 Valid, 268 Invalid, 77 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 74 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-12 02:08:27,039 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2023-11-12 02:08:27,044 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 101. [2023-11-12 02:08:27,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 101 states, 80 states have (on average 1.4875) internal successors, (119), 97 states have internal predecessors, (119), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-11-12 02:08:27,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 124 transitions. [2023-11-12 02:08:27,046 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 124 transitions. Word has length 21 [2023-11-12 02:08:27,046 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:08:27,046 INFO L495 AbstractCegarLoop]: Abstraction has 101 states and 124 transitions. [2023-11-12 02:08:27,047 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 2.9) internal successors, (29), 10 states have internal predecessors, (29), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-12 02:08:27,047 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 124 transitions. [2023-11-12 02:08:27,047 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2023-11-12 02:08:27,048 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:08:27,048 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:08:27,068 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc559f19-9c13-4756-9979-b92addd167d4/bin/uautomizer-verify-uTZkv6EMXl/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2023-11-12 02:08:27,260 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc559f19-9c13-4756-9979-b92addd167d4/bin/uautomizer-verify-uTZkv6EMXl/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 [2023-11-12 02:08:27,261 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] === [2023-11-12 02:08:27,261 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:08:27,261 INFO L85 PathProgramCache]: Analyzing trace with hash -1435873458, now seen corresponding path program 2 times [2023-11-12 02:08:27,261 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-12 02:08:27,261 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [543519916] [2023-11-12 02:08:27,262 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-12 02:08:27,262 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 [2023-11-12 02:08:27,262 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc559f19-9c13-4756-9979-b92addd167d4/bin/uautomizer-verify-uTZkv6EMXl/mathsat [2023-11-12 02:08:27,263 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc559f19-9c13-4756-9979-b92addd167d4/bin/uautomizer-verify-uTZkv6EMXl/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) [2023-11-12 02:08:27,267 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc559f19-9c13-4756-9979-b92addd167d4/bin/uautomizer-verify-uTZkv6EMXl/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 [2023-11-12 02:08:27,371 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-12 02:08:27,372 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-12 02:08:27,376 INFO L262 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 17 conjunts are in the unsatisfiable core [2023-11-12 02:08:27,379 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 02:08:27,401 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-11-12 02:08:27,907 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:08:27,907 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-12 02:08:29,957 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:08:29,957 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-12 02:08:29,958 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [543519916] [2023-11-12 02:08:29,958 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [543519916] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-12 02:08:29,958 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-12 02:08:29,958 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 23 [2023-11-12 02:08:29,958 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1082339760] [2023-11-12 02:08:29,958 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-12 02:08:29,959 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-11-12 02:08:29,959 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-12 02:08:29,960 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-11-12 02:08:29,960 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=113, Invalid=439, Unknown=0, NotChecked=0, Total=552 [2023-11-12 02:08:29,961 INFO L87 Difference]: Start difference. First operand 101 states and 124 transitions. Second operand has 24 states, 21 states have (on average 1.9523809523809523) internal successors, (41), 22 states have internal predecessors, (41), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-12 02:08:34,080 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:08:34,080 INFO L93 Difference]: Finished difference Result 132 states and 151 transitions. [2023-11-12 02:08:34,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-11-12 02:08:34,081 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 21 states have (on average 1.9523809523809523) internal successors, (41), 22 states have internal predecessors, (41), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 23 [2023-11-12 02:08:34,082 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:08:34,083 INFO L225 Difference]: With dead ends: 132 [2023-11-12 02:08:34,083 INFO L226 Difference]: Without dead ends: 132 [2023-11-12 02:08:34,084 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 239 ImplicationChecksByTransitivity, 4.0s TimeCoverageRelationStatistics Valid=311, Invalid=1021, Unknown=0, NotChecked=0, Total=1332 [2023-11-12 02:08:34,084 INFO L413 NwaCegarLoop]: 43 mSDtfsCounter, 375 mSDsluCounter, 463 mSDsCounter, 0 mSdLazyCounter, 456 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 377 SdHoareTripleChecker+Valid, 506 SdHoareTripleChecker+Invalid, 481 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 456 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2023-11-12 02:08:34,085 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [377 Valid, 506 Invalid, 481 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 456 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2023-11-12 02:08:34,085 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132 states. [2023-11-12 02:08:34,090 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132 to 114. [2023-11-12 02:08:34,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 114 states, 93 states have (on average 1.4516129032258065) internal successors, (135), 110 states have internal predecessors, (135), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-11-12 02:08:34,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 140 transitions. [2023-11-12 02:08:34,092 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 140 transitions. Word has length 23 [2023-11-12 02:08:34,093 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:08:34,093 INFO L495 AbstractCegarLoop]: Abstraction has 114 states and 140 transitions. [2023-11-12 02:08:34,093 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 21 states have (on average 1.9523809523809523) internal successors, (41), 22 states have internal predecessors, (41), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-12 02:08:34,093 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 140 transitions. [2023-11-12 02:08:34,094 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2023-11-12 02:08:34,094 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:08:34,095 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:08:34,122 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc559f19-9c13-4756-9979-b92addd167d4/bin/uautomizer-verify-uTZkv6EMXl/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2023-11-12 02:08:34,313 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc559f19-9c13-4756-9979-b92addd167d4/bin/uautomizer-verify-uTZkv6EMXl/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 [2023-11-12 02:08:34,313 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] === [2023-11-12 02:08:34,313 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:08:34,314 INFO L85 PathProgramCache]: Analyzing trace with hash -1424196022, now seen corresponding path program 2 times [2023-11-12 02:08:34,314 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-12 02:08:34,314 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1950135320] [2023-11-12 02:08:34,314 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-12 02:08:34,314 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 [2023-11-12 02:08:34,314 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc559f19-9c13-4756-9979-b92addd167d4/bin/uautomizer-verify-uTZkv6EMXl/mathsat [2023-11-12 02:08:34,315 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc559f19-9c13-4756-9979-b92addd167d4/bin/uautomizer-verify-uTZkv6EMXl/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) [2023-11-12 02:08:34,316 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc559f19-9c13-4756-9979-b92addd167d4/bin/uautomizer-verify-uTZkv6EMXl/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 [2023-11-12 02:08:34,384 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-12 02:08:34,384 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-12 02:08:34,386 INFO L262 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-12 02:08:34,388 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 02:08:34,394 INFO L351 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 [2023-11-12 02:08:34,508 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2023-11-12 02:08:34,509 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-12 02:08:34,509 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-12 02:08:34,509 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1950135320] [2023-11-12 02:08:34,509 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1950135320] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:08:34,509 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:08:34,509 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-12 02:08:34,509 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [742815193] [2023-11-12 02:08:34,510 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:08:34,510 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-12 02:08:34,510 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-12 02:08:34,510 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-12 02:08:34,511 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-12 02:08:34,511 INFO L87 Difference]: Start difference. First operand 114 states and 140 transitions. Second operand has 6 states, 5 states have (on average 3.2) internal successors, (16), 5 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) [2023-11-12 02:08:34,768 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:08:34,768 INFO L93 Difference]: Finished difference Result 139 states and 167 transitions. [2023-11-12 02:08:34,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-12 02:08:34,769 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.2) internal successors, (16), 5 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 33 [2023-11-12 02:08:34,769 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:08:34,770 INFO L225 Difference]: With dead ends: 139 [2023-11-12 02:08:34,771 INFO L226 Difference]: Without dead ends: 139 [2023-11-12 02:08:34,771 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-11-12 02:08:34,772 INFO L413 NwaCegarLoop]: 46 mSDtfsCounter, 50 mSDsluCounter, 131 mSDsCounter, 0 mSdLazyCounter, 124 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 177 SdHoareTripleChecker+Invalid, 126 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 124 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-12 02:08:34,772 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [50 Valid, 177 Invalid, 126 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 124 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-12 02:08:34,773 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139 states. [2023-11-12 02:08:34,778 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139 to 118. [2023-11-12 02:08:34,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 118 states, 97 states have (on average 1.4639175257731958) internal successors, (142), 114 states have internal predecessors, (142), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-11-12 02:08:34,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 147 transitions. [2023-11-12 02:08:34,780 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 147 transitions. Word has length 33 [2023-11-12 02:08:34,781 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:08:34,781 INFO L495 AbstractCegarLoop]: Abstraction has 118 states and 147 transitions. [2023-11-12 02:08:34,781 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.2) internal successors, (16), 5 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) [2023-11-12 02:08:34,781 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 147 transitions. [2023-11-12 02:08:34,782 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2023-11-12 02:08:34,782 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:08:34,783 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:08:34,801 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc559f19-9c13-4756-9979-b92addd167d4/bin/uautomizer-verify-uTZkv6EMXl/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)] Ended with exit code 0 [2023-11-12 02:08:34,994 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc559f19-9c13-4756-9979-b92addd167d4/bin/uautomizer-verify-uTZkv6EMXl/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 [2023-11-12 02:08:34,995 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] === [2023-11-12 02:08:34,996 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:08:34,996 INFO L85 PathProgramCache]: Analyzing trace with hash -1424196021, now seen corresponding path program 1 times [2023-11-12 02:08:34,996 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-12 02:08:34,997 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [798641502] [2023-11-12 02:08:34,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:08:34,997 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 [2023-11-12 02:08:34,997 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc559f19-9c13-4756-9979-b92addd167d4/bin/uautomizer-verify-uTZkv6EMXl/mathsat [2023-11-12 02:08:34,998 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc559f19-9c13-4756-9979-b92addd167d4/bin/uautomizer-verify-uTZkv6EMXl/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) [2023-11-12 02:08:35,004 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc559f19-9c13-4756-9979-b92addd167d4/bin/uautomizer-verify-uTZkv6EMXl/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 [2023-11-12 02:08:35,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:08:35,125 INFO L262 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-12 02:08:35,127 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 02:08:35,313 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 0 proven. 51 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:08:35,313 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-12 02:08:35,710 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 0 proven. 51 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:08:35,711 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-12 02:08:35,711 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [798641502] [2023-11-12 02:08:35,711 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [798641502] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-12 02:08:35,711 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-12 02:08:35,711 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 18 [2023-11-12 02:08:35,711 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1628025939] [2023-11-12 02:08:35,711 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-12 02:08:35,712 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-11-12 02:08:35,712 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-12 02:08:35,712 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-11-12 02:08:35,713 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=215, Unknown=0, NotChecked=0, Total=306 [2023-11-12 02:08:35,713 INFO L87 Difference]: Start difference. First operand 118 states and 147 transitions. Second operand has 18 states, 18 states have (on average 2.9444444444444446) internal successors, (53), 18 states have internal predecessors, (53), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-12 02:08:36,163 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:08:36,163 INFO L93 Difference]: Finished difference Result 118 states and 143 transitions. [2023-11-12 02:08:36,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-11-12 02:08:36,164 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.9444444444444446) internal successors, (53), 18 states have internal predecessors, (53), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 33 [2023-11-12 02:08:36,165 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:08:36,166 INFO L225 Difference]: With dead ends: 118 [2023-11-12 02:08:36,166 INFO L226 Difference]: Without dead ends: 118 [2023-11-12 02:08:36,166 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 81 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=133, Invalid=287, Unknown=0, NotChecked=0, Total=420 [2023-11-12 02:08:36,167 INFO L413 NwaCegarLoop]: 56 mSDtfsCounter, 70 mSDsluCounter, 373 mSDsCounter, 0 mSdLazyCounter, 194 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 71 SdHoareTripleChecker+Valid, 429 SdHoareTripleChecker+Invalid, 195 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 194 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-12 02:08:36,167 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [71 Valid, 429 Invalid, 195 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 194 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-12 02:08:36,168 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2023-11-12 02:08:36,171 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 118. [2023-11-12 02:08:36,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 118 states, 97 states have (on average 1.422680412371134) internal successors, (138), 114 states have internal predecessors, (138), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-11-12 02:08:36,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 143 transitions. [2023-11-12 02:08:36,172 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 143 transitions. Word has length 33 [2023-11-12 02:08:36,172 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:08:36,172 INFO L495 AbstractCegarLoop]: Abstraction has 118 states and 143 transitions. [2023-11-12 02:08:36,173 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 2.9444444444444446) internal successors, (53), 18 states have internal predecessors, (53), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-12 02:08:36,173 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 143 transitions. [2023-11-12 02:08:36,174 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2023-11-12 02:08:36,174 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:08:36,174 INFO L195 NwaCegarLoop]: trace histogram [11, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:08:36,189 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc559f19-9c13-4756-9979-b92addd167d4/bin/uautomizer-verify-uTZkv6EMXl/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 [2023-11-12 02:08:36,385 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc559f19-9c13-4756-9979-b92addd167d4/bin/uautomizer-verify-uTZkv6EMXl/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 [2023-11-12 02:08:36,386 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] === [2023-11-12 02:08:36,386 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:08:36,386 INFO L85 PathProgramCache]: Analyzing trace with hash 2030306542, now seen corresponding path program 3 times [2023-11-12 02:08:36,386 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-12 02:08:36,386 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1343010415] [2023-11-12 02:08:36,387 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-12 02:08:36,387 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 [2023-11-12 02:08:36,387 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc559f19-9c13-4756-9979-b92addd167d4/bin/uautomizer-verify-uTZkv6EMXl/mathsat [2023-11-12 02:08:36,388 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc559f19-9c13-4756-9979-b92addd167d4/bin/uautomizer-verify-uTZkv6EMXl/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) [2023-11-12 02:08:36,428 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc559f19-9c13-4756-9979-b92addd167d4/bin/uautomizer-verify-uTZkv6EMXl/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 [2023-11-12 02:08:36,697 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2023-11-12 02:08:36,698 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-12 02:08:36,706 INFO L262 TraceCheckSpWp]: Trace formula consists of 189 conjuncts, 25 conjunts are in the unsatisfiable core [2023-11-12 02:08:36,710 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 02:08:36,730 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-11-12 02:08:37,659 INFO L134 CoverageAnalysis]: Checked inductivity of 155 backedges. 10 proven. 145 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:08:37,659 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-12 02:08:44,480 INFO L134 CoverageAnalysis]: Checked inductivity of 155 backedges. 0 proven. 155 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:08:44,480 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-12 02:08:44,481 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1343010415] [2023-11-12 02:08:44,481 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1343010415] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-12 02:08:44,481 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-12 02:08:44,481 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 19] total 36 [2023-11-12 02:08:44,481 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1261116853] [2023-11-12 02:08:44,482 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-12 02:08:44,482 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2023-11-12 02:08:44,482 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-12 02:08:44,483 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2023-11-12 02:08:44,484 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=281, Invalid=979, Unknown=0, NotChecked=0, Total=1260 [2023-11-12 02:08:44,484 INFO L87 Difference]: Start difference. First operand 118 states and 143 transitions. Second operand has 36 states, 34 states have (on average 2.264705882352941) internal successors, (77), 34 states have internal predecessors, (77), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-12 02:08:50,518 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:08:50,518 INFO L93 Difference]: Finished difference Result 178 states and 203 transitions. [2023-11-12 02:08:50,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-11-12 02:08:50,519 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 34 states have (on average 2.264705882352941) internal successors, (77), 34 states have internal predecessors, (77), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 41 [2023-11-12 02:08:50,520 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:08:50,521 INFO L225 Difference]: With dead ends: 178 [2023-11-12 02:08:50,521 INFO L226 Difference]: Without dead ends: 178 [2023-11-12 02:08:50,522 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 385 ImplicationChecksByTransitivity, 6.9s TimeCoverageRelationStatistics Valid=328, Invalid=1232, Unknown=0, NotChecked=0, Total=1560 [2023-11-12 02:08:50,523 INFO L413 NwaCegarLoop]: 38 mSDtfsCounter, 1213 mSDsluCounter, 824 mSDsCounter, 0 mSdLazyCounter, 980 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1215 SdHoareTripleChecker+Valid, 862 SdHoareTripleChecker+Invalid, 1014 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 980 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.1s IncrementalHoareTripleChecker+Time [2023-11-12 02:08:50,524 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1215 Valid, 862 Invalid, 1014 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 980 Invalid, 0 Unknown, 0 Unchecked, 4.1s Time] [2023-11-12 02:08:50,525 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 178 states. [2023-11-12 02:08:50,529 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 178 to 116. [2023-11-12 02:08:50,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 116 states, 96 states have (on average 1.40625) internal successors, (135), 112 states have internal predecessors, (135), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-11-12 02:08:50,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 140 transitions. [2023-11-12 02:08:50,531 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 140 transitions. Word has length 41 [2023-11-12 02:08:50,532 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:08:50,532 INFO L495 AbstractCegarLoop]: Abstraction has 116 states and 140 transitions. [2023-11-12 02:08:50,532 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 34 states have (on average 2.264705882352941) internal successors, (77), 34 states have internal predecessors, (77), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-12 02:08:50,532 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 140 transitions. [2023-11-12 02:08:50,533 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2023-11-12 02:08:50,534 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:08:50,534 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:08:50,544 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc559f19-9c13-4756-9979-b92addd167d4/bin/uautomizer-verify-uTZkv6EMXl/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 [2023-11-12 02:08:50,740 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc559f19-9c13-4756-9979-b92addd167d4/bin/uautomizer-verify-uTZkv6EMXl/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 [2023-11-12 02:08:50,740 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] === [2023-11-12 02:08:50,741 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:08:50,741 INFO L85 PathProgramCache]: Analyzing trace with hash -1720133109, now seen corresponding path program 2 times [2023-11-12 02:08:50,742 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-12 02:08:50,742 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [533441522] [2023-11-12 02:08:50,742 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-12 02:08:50,742 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 [2023-11-12 02:08:50,742 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc559f19-9c13-4756-9979-b92addd167d4/bin/uautomizer-verify-uTZkv6EMXl/mathsat [2023-11-12 02:08:50,744 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc559f19-9c13-4756-9979-b92addd167d4/bin/uautomizer-verify-uTZkv6EMXl/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) [2023-11-12 02:08:50,747 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc559f19-9c13-4756-9979-b92addd167d4/bin/uautomizer-verify-uTZkv6EMXl/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 [2023-11-12 02:08:50,845 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-12 02:08:50,845 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-12 02:08:50,847 INFO L262 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-12 02:08:50,849 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 02:08:50,964 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2023-11-12 02:08:50,964 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-12 02:08:50,964 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-12 02:08:50,965 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [533441522] [2023-11-12 02:08:50,965 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [533441522] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:08:50,965 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:08:50,965 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-12 02:08:50,966 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [971275159] [2023-11-12 02:08:50,966 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:08:50,968 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-12 02:08:50,968 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-12 02:08:50,968 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-12 02:08:50,969 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-12 02:08:50,969 INFO L87 Difference]: Start difference. First operand 116 states and 140 transitions. Second operand has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 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) [2023-11-12 02:08:51,046 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:08:51,046 INFO L93 Difference]: Finished difference Result 111 states and 122 transitions. [2023-11-12 02:08:51,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-12 02:08:51,047 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 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 45 [2023-11-12 02:08:51,048 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:08:51,049 INFO L225 Difference]: With dead ends: 111 [2023-11-12 02:08:51,049 INFO L226 Difference]: Without dead ends: 111 [2023-11-12 02:08:51,049 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-12 02:08:51,050 INFO L413 NwaCegarLoop]: 53 mSDtfsCounter, 88 mSDsluCounter, 60 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 89 SdHoareTripleChecker+Valid, 113 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-12 02:08:51,050 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [89 Valid, 113 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-12 02:08:51,051 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2023-11-12 02:08:51,054 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 90. [2023-11-12 02:08:51,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 90 states, 70 states have (on average 1.3142857142857143) internal successors, (92), 86 states have internal predecessors, (92), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-11-12 02:08:51,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 97 transitions. [2023-11-12 02:08:51,055 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 97 transitions. Word has length 45 [2023-11-12 02:08:51,055 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:08:51,055 INFO L495 AbstractCegarLoop]: Abstraction has 90 states and 97 transitions. [2023-11-12 02:08:51,055 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 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) [2023-11-12 02:08:51,055 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 97 transitions. [2023-11-12 02:08:51,059 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2023-11-12 02:08:51,059 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:08:51,059 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:08:51,076 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc559f19-9c13-4756-9979-b92addd167d4/bin/uautomizer-verify-uTZkv6EMXl/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 [2023-11-12 02:08:51,260 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc559f19-9c13-4756-9979-b92addd167d4/bin/uautomizer-verify-uTZkv6EMXl/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 [2023-11-12 02:08:51,260 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] === [2023-11-12 02:08:51,260 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:08:51,261 INFO L85 PathProgramCache]: Analyzing trace with hash -1217377455, now seen corresponding path program 1 times [2023-11-12 02:08:51,261 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-12 02:08:51,261 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [267444479] [2023-11-12 02:08:51,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:08:51,261 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 [2023-11-12 02:08:51,262 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc559f19-9c13-4756-9979-b92addd167d4/bin/uautomizer-verify-uTZkv6EMXl/mathsat [2023-11-12 02:08:51,263 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc559f19-9c13-4756-9979-b92addd167d4/bin/uautomizer-verify-uTZkv6EMXl/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) [2023-11-12 02:08:51,284 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc559f19-9c13-4756-9979-b92addd167d4/bin/uautomizer-verify-uTZkv6EMXl/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 [2023-11-12 02:08:51,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:08:51,501 INFO L262 TraceCheckSpWp]: Trace formula consists of 218 conjuncts, 11 conjunts are in the unsatisfiable core [2023-11-12 02:08:51,505 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 02:08:51,510 INFO L351 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 [2023-11-12 02:08:51,652 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 [2023-11-12 02:08:51,680 INFO L322 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2023-11-12 02:08:51,681 INFO L351 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 [2023-11-12 02:08:51,726 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 2 not checked. [2023-11-12 02:08:51,726 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-12 02:08:52,013 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2023-11-12 02:08:52,013 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-12 02:08:52,014 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [267444479] [2023-11-12 02:08:52,014 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [267444479] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-12 02:08:52,014 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-12 02:08:52,014 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6] total 8 [2023-11-12 02:08:52,014 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [198032805] [2023-11-12 02:08:52,015 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-12 02:08:52,015 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-12 02:08:52,015 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-12 02:08:52,016 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-12 02:08:52,016 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=43, Unknown=1, NotChecked=12, Total=72 [2023-11-12 02:08:52,017 INFO L87 Difference]: Start difference. First operand 90 states and 97 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 8 states have internal predecessors, (22), 2 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-11-12 02:08:52,364 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:08:52,364 INFO L93 Difference]: Finished difference Result 116 states and 125 transitions. [2023-11-12 02:08:52,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-12 02:08:52,365 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 8 states have internal predecessors, (22), 2 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 50 [2023-11-12 02:08:52,365 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:08:52,366 INFO L225 Difference]: With dead ends: 116 [2023-11-12 02:08:52,366 INFO L226 Difference]: Without dead ends: 116 [2023-11-12 02:08:52,366 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 88 SyntacticMatches, 3 SemanticMatches, 9 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=24, Invalid=69, Unknown=1, NotChecked=16, Total=110 [2023-11-12 02:08:52,367 INFO L413 NwaCegarLoop]: 42 mSDtfsCounter, 60 mSDsluCounter, 147 mSDsCounter, 0 mSdLazyCounter, 145 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 60 SdHoareTripleChecker+Valid, 189 SdHoareTripleChecker+Invalid, 242 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 145 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 90 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-12 02:08:52,368 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [60 Valid, 189 Invalid, 242 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 145 Invalid, 0 Unknown, 90 Unchecked, 0.3s Time] [2023-11-12 02:08:52,368 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2023-11-12 02:08:52,371 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 95. [2023-11-12 02:08:52,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 95 states, 76 states have (on average 1.3157894736842106) internal successors, (100), 91 states have internal predecessors, (100), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-11-12 02:08:52,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 105 transitions. [2023-11-12 02:08:52,373 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 105 transitions. Word has length 50 [2023-11-12 02:08:52,373 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:08:52,373 INFO L495 AbstractCegarLoop]: Abstraction has 95 states and 105 transitions. [2023-11-12 02:08:52,373 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 8 states have internal predecessors, (22), 2 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-11-12 02:08:52,373 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 105 transitions. [2023-11-12 02:08:52,374 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2023-11-12 02:08:52,374 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:08:52,374 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:08:52,389 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc559f19-9c13-4756-9979-b92addd167d4/bin/uautomizer-verify-uTZkv6EMXl/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 [2023-11-12 02:08:52,588 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc559f19-9c13-4756-9979-b92addd167d4/bin/uautomizer-verify-uTZkv6EMXl/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 [2023-11-12 02:08:52,588 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] === [2023-11-12 02:08:52,589 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:08:52,589 INFO L85 PathProgramCache]: Analyzing trace with hash -1217377454, now seen corresponding path program 1 times [2023-11-12 02:08:52,589 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-12 02:08:52,589 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [333606542] [2023-11-12 02:08:52,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:08:52,590 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 [2023-11-12 02:08:52,590 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc559f19-9c13-4756-9979-b92addd167d4/bin/uautomizer-verify-uTZkv6EMXl/mathsat [2023-11-12 02:08:52,591 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc559f19-9c13-4756-9979-b92addd167d4/bin/uautomizer-verify-uTZkv6EMXl/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) [2023-11-12 02:08:52,594 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc559f19-9c13-4756-9979-b92addd167d4/bin/uautomizer-verify-uTZkv6EMXl/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 [2023-11-12 02:08:52,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:08:52,824 INFO L262 TraceCheckSpWp]: Trace formula consists of 218 conjuncts, 24 conjunts are in the unsatisfiable core [2023-11-12 02:08:52,828 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 02:08:52,853 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-11-12 02:08:52,861 INFO L351 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 [2023-11-12 02:08:53,403 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 [2023-11-12 02:08:53,430 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-12 02:08:53,431 INFO L351 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 [2023-11-12 02:08:53,448 INFO L322 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2023-11-12 02:08:53,448 INFO L351 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 [2023-11-12 02:08:53,527 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 145 trivial. 2 not checked. [2023-11-12 02:08:53,527 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-12 02:08:53,980 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-12 02:08:53,981 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [333606542] [2023-11-12 02:08:53,981 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [333606542] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-12 02:08:53,981 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [871583797] [2023-11-12 02:08:53,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:08:53,982 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-11-12 02:08:53,982 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc559f19-9c13-4756-9979-b92addd167d4/bin/uautomizer-verify-uTZkv6EMXl/cvc4 [2023-11-12 02:08:53,983 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc559f19-9c13-4756-9979-b92addd167d4/bin/uautomizer-verify-uTZkv6EMXl/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-11-12 02:08:53,985 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc559f19-9c13-4756-9979-b92addd167d4/bin/uautomizer-verify-uTZkv6EMXl/cvc4 --incremental --print-success --lang smt (16)] Waiting until timeout for monitored process [2023-11-12 02:08:54,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:08:54,430 INFO L262 TraceCheckSpWp]: Trace formula consists of 218 conjuncts, 24 conjunts are in the unsatisfiable core [2023-11-12 02:08:54,433 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 02:08:54,455 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-11-12 02:08:54,464 INFO L351 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 [2023-11-12 02:08:54,951 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-12 02:08:54,953 INFO L351 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 [2023-11-12 02:08:54,969 INFO L322 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2023-11-12 02:08:54,970 INFO L351 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 [2023-11-12 02:08:54,994 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 145 trivial. 2 not checked. [2023-11-12 02:08:54,994 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-12 02:08:55,307 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [871583797] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-12 02:08:55,308 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-12 02:08:55,308 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 10 [2023-11-12 02:08:55,308 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [872135500] [2023-11-12 02:08:55,308 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-12 02:08:55,308 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-12 02:08:55,309 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-12 02:08:55,309 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-12 02:08:55,309 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=108, Unknown=1, NotChecked=20, Total=156 [2023-11-12 02:08:55,310 INFO L87 Difference]: Start difference. First operand 95 states and 105 transitions. Second operand has 11 states, 9 states have (on average 2.111111111111111) internal successors, (19), 10 states have internal predecessors, (19), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-12 02:08:56,358 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:08:56,358 INFO L93 Difference]: Finished difference Result 168 states and 192 transitions. [2023-11-12 02:08:56,359 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-12 02:08:56,360 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 9 states have (on average 2.111111111111111) internal successors, (19), 10 states have internal predecessors, (19), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 50 [2023-11-12 02:08:56,360 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:08:56,361 INFO L225 Difference]: With dead ends: 168 [2023-11-12 02:08:56,361 INFO L226 Difference]: Without dead ends: 168 [2023-11-12 02:08:56,362 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 94 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=67, Invalid=278, Unknown=1, NotChecked=34, Total=380 [2023-11-12 02:08:56,362 INFO L413 NwaCegarLoop]: 61 mSDtfsCounter, 158 mSDsluCounter, 290 mSDsCounter, 0 mSdLazyCounter, 314 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 161 SdHoareTripleChecker+Valid, 351 SdHoareTripleChecker+Invalid, 468 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 314 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 143 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-11-12 02:08:56,363 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [161 Valid, 351 Invalid, 468 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 314 Invalid, 0 Unknown, 143 Unchecked, 0.7s Time] [2023-11-12 02:08:56,363 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 168 states. [2023-11-12 02:08:56,367 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 168 to 115. [2023-11-12 02:08:56,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 115 states, 94 states have (on average 1.3297872340425532) internal successors, (125), 108 states have internal predecessors, (125), 4 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (7), 5 states have call predecessors, (7), 4 states have call successors, (7) [2023-11-12 02:08:56,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 136 transitions. [2023-11-12 02:08:56,369 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 136 transitions. Word has length 50 [2023-11-12 02:08:56,369 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:08:56,370 INFO L495 AbstractCegarLoop]: Abstraction has 115 states and 136 transitions. [2023-11-12 02:08:56,370 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 9 states have (on average 2.111111111111111) internal successors, (19), 10 states have internal predecessors, (19), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-12 02:08:56,370 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 136 transitions. [2023-11-12 02:08:56,371 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2023-11-12 02:08:56,371 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:08:56,371 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:08:56,382 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc559f19-9c13-4756-9979-b92addd167d4/bin/uautomizer-verify-uTZkv6EMXl/cvc4 --incremental --print-success --lang smt (16)] Forceful destruction successful, exit code 0 [2023-11-12 02:08:56,585 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc559f19-9c13-4756-9979-b92addd167d4/bin/uautomizer-verify-uTZkv6EMXl/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 [2023-11-12 02:08:56,776 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc559f19-9c13-4756-9979-b92addd167d4/bin/uautomizer-verify-uTZkv6EMXl/cvc4 --incremental --print-success --lang smt,15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc559f19-9c13-4756-9979-b92addd167d4/bin/uautomizer-verify-uTZkv6EMXl/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 [2023-11-12 02:08:56,777 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] === [2023-11-12 02:08:56,777 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:08:56,777 INFO L85 PathProgramCache]: Analyzing trace with hash -1668680547, now seen corresponding path program 1 times [2023-11-12 02:08:56,778 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-12 02:08:56,778 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1702395739] [2023-11-12 02:08:56,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:08:56,778 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 [2023-11-12 02:08:56,778 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc559f19-9c13-4756-9979-b92addd167d4/bin/uautomizer-verify-uTZkv6EMXl/mathsat [2023-11-12 02:08:56,779 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc559f19-9c13-4756-9979-b92addd167d4/bin/uautomizer-verify-uTZkv6EMXl/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) [2023-11-12 02:08:56,794 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc559f19-9c13-4756-9979-b92addd167d4/bin/uautomizer-verify-uTZkv6EMXl/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 [2023-11-12 02:08:56,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:08:56,957 INFO L262 TraceCheckSpWp]: Trace formula consists of 221 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-12 02:08:56,958 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 02:08:56,982 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 147 trivial. 0 not checked. [2023-11-12 02:08:56,982 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-12 02:08:56,982 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-12 02:08:56,982 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1702395739] [2023-11-12 02:08:56,982 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1702395739] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:08:56,982 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:08:56,983 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-12 02:08:56,983 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [132201570] [2023-11-12 02:08:56,983 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:08:56,984 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-12 02:08:56,984 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-12 02:08:56,985 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-12 02:08:56,985 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-12 02:08:56,985 INFO L87 Difference]: Start difference. First operand 115 states and 136 transitions. Second operand has 5 states, 5 states have (on average 4.0) internal successors, (20), 4 states have internal predecessors, (20), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-12 02:08:57,048 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:08:57,048 INFO L93 Difference]: Finished difference Result 142 states and 168 transitions. [2023-11-12 02:08:57,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-12 02:08:57,049 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.0) internal successors, (20), 4 states have internal predecessors, (20), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 52 [2023-11-12 02:08:57,049 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:08:57,050 INFO L225 Difference]: With dead ends: 142 [2023-11-12 02:08:57,050 INFO L226 Difference]: Without dead ends: 142 [2023-11-12 02:08:57,051 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-11-12 02:08:57,052 INFO L413 NwaCegarLoop]: 61 mSDtfsCounter, 20 mSDsluCounter, 174 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 235 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-12 02:08:57,052 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 235 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-12 02:08:57,053 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142 states. [2023-11-12 02:08:57,056 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142 to 117. [2023-11-12 02:08:57,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 117 states, 96 states have (on average 1.3125) internal successors, (126), 109 states have internal predecessors, (126), 4 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (7), 6 states have call predecessors, (7), 4 states have call successors, (7) [2023-11-12 02:08:57,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 137 transitions. [2023-11-12 02:08:57,058 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 137 transitions. Word has length 52 [2023-11-12 02:08:57,058 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:08:57,058 INFO L495 AbstractCegarLoop]: Abstraction has 117 states and 137 transitions. [2023-11-12 02:08:57,059 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.0) internal successors, (20), 4 states have internal predecessors, (20), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-12 02:08:57,059 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 137 transitions. [2023-11-12 02:08:57,060 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2023-11-12 02:08:57,060 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:08:57,060 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:08:57,076 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc559f19-9c13-4756-9979-b92addd167d4/bin/uautomizer-verify-uTZkv6EMXl/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 [2023-11-12 02:08:57,272 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc559f19-9c13-4756-9979-b92addd167d4/bin/uautomizer-verify-uTZkv6EMXl/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 [2023-11-12 02:08:57,273 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] === [2023-11-12 02:08:57,273 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:08:57,273 INFO L85 PathProgramCache]: Analyzing trace with hash 74129788, now seen corresponding path program 1 times [2023-11-12 02:08:57,273 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-12 02:08:57,273 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1663203788] [2023-11-12 02:08:57,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:08:57,274 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 [2023-11-12 02:08:57,274 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc559f19-9c13-4756-9979-b92addd167d4/bin/uautomizer-verify-uTZkv6EMXl/mathsat [2023-11-12 02:08:57,275 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc559f19-9c13-4756-9979-b92addd167d4/bin/uautomizer-verify-uTZkv6EMXl/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) [2023-11-12 02:08:57,281 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc559f19-9c13-4756-9979-b92addd167d4/bin/uautomizer-verify-uTZkv6EMXl/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 [2023-11-12 02:08:57,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:08:57,466 INFO L262 TraceCheckSpWp]: Trace formula consists of 215 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-12 02:08:57,467 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 02:08:57,488 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 149 trivial. 0 not checked. [2023-11-12 02:08:57,488 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-12 02:08:57,488 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-12 02:08:57,488 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1663203788] [2023-11-12 02:08:57,488 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1663203788] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:08:57,489 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:08:57,489 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-12 02:08:57,489 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1028954259] [2023-11-12 02:08:57,489 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:08:57,489 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-12 02:08:57,489 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-12 02:08:57,490 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-12 02:08:57,490 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-12 02:08:57,490 INFO L87 Difference]: Start difference. First operand 117 states and 137 transitions. Second operand has 4 states, 4 states have (on average 4.75) internal successors, (19), 4 states have internal predecessors, (19), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-12 02:08:57,564 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:08:57,564 INFO L93 Difference]: Finished difference Result 123 states and 143 transitions. [2023-11-12 02:08:57,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-12 02:08:57,565 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.75) internal successors, (19), 4 states have internal predecessors, (19), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 52 [2023-11-12 02:08:57,565 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:08:57,566 INFO L225 Difference]: With dead ends: 123 [2023-11-12 02:08:57,566 INFO L226 Difference]: Without dead ends: 123 [2023-11-12 02:08:57,566 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-12 02:08:57,567 INFO L413 NwaCegarLoop]: 60 mSDtfsCounter, 7 mSDsluCounter, 103 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 163 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-12 02:08:57,568 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 163 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-12 02:08:57,568 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2023-11-12 02:08:57,572 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 119. [2023-11-12 02:08:57,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 119 states, 98 states have (on average 1.3061224489795917) internal successors, (128), 111 states have internal predecessors, (128), 4 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (7), 6 states have call predecessors, (7), 4 states have call successors, (7) [2023-11-12 02:08:57,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 139 transitions. [2023-11-12 02:08:57,574 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 139 transitions. Word has length 52 [2023-11-12 02:08:57,575 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:08:57,575 INFO L495 AbstractCegarLoop]: Abstraction has 119 states and 139 transitions. [2023-11-12 02:08:57,575 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.75) internal successors, (19), 4 states have internal predecessors, (19), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-12 02:08:57,575 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 139 transitions. [2023-11-12 02:08:57,576 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2023-11-12 02:08:57,576 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:08:57,576 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:08:57,587 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc559f19-9c13-4756-9979-b92addd167d4/bin/uautomizer-verify-uTZkv6EMXl/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)] Forceful destruction successful, exit code 0 [2023-11-12 02:08:57,784 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc559f19-9c13-4756-9979-b92addd167d4/bin/uautomizer-verify-uTZkv6EMXl/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 [2023-11-12 02:08:57,784 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] === [2023-11-12 02:08:57,784 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:08:57,784 INFO L85 PathProgramCache]: Analyzing trace with hash -176607943, now seen corresponding path program 1 times [2023-11-12 02:08:57,785 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-12 02:08:57,785 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [760397178] [2023-11-12 02:08:57,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:08:57,785 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 [2023-11-12 02:08:57,785 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc559f19-9c13-4756-9979-b92addd167d4/bin/uautomizer-verify-uTZkv6EMXl/mathsat [2023-11-12 02:08:57,786 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc559f19-9c13-4756-9979-b92addd167d4/bin/uautomizer-verify-uTZkv6EMXl/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) [2023-11-12 02:08:57,788 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc559f19-9c13-4756-9979-b92addd167d4/bin/uautomizer-verify-uTZkv6EMXl/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 [2023-11-12 02:08:57,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:08:57,965 INFO L262 TraceCheckSpWp]: Trace formula consists of 235 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-12 02:08:57,967 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 02:08:58,095 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 149 trivial. 0 not checked. [2023-11-12 02:08:58,095 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-12 02:08:58,290 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 149 trivial. 0 not checked. [2023-11-12 02:08:58,290 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-12 02:08:58,290 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [760397178] [2023-11-12 02:08:58,290 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [760397178] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-12 02:08:58,291 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-12 02:08:58,291 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2023-11-12 02:08:58,291 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1340755284] [2023-11-12 02:08:58,291 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-12 02:08:58,291 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-12 02:08:58,291 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-12 02:08:58,292 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-12 02:08:58,292 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2023-11-12 02:08:58,292 INFO L87 Difference]: Start difference. First operand 119 states and 139 transitions. Second operand has 8 states, 8 states have (on average 4.375) internal successors, (35), 8 states have internal predecessors, (35), 4 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2023-11-12 02:08:58,537 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:08:58,537 INFO L93 Difference]: Finished difference Result 221 states and 267 transitions. [2023-11-12 02:08:58,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-12 02:08:58,538 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.375) internal successors, (35), 8 states have internal predecessors, (35), 4 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Word has length 55 [2023-11-12 02:08:58,538 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:08:58,540 INFO L225 Difference]: With dead ends: 221 [2023-11-12 02:08:58,540 INFO L226 Difference]: Without dead ends: 221 [2023-11-12 02:08:58,540 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 102 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=48, Invalid=84, Unknown=0, NotChecked=0, Total=132 [2023-11-12 02:08:58,541 INFO L413 NwaCegarLoop]: 59 mSDtfsCounter, 206 mSDsluCounter, 162 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 206 SdHoareTripleChecker+Valid, 221 SdHoareTripleChecker+Invalid, 59 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-12 02:08:58,541 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [206 Valid, 221 Invalid, 59 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-12 02:08:58,542 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 221 states. [2023-11-12 02:08:58,548 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 221 to 151. [2023-11-12 02:08:58,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 151 states, 126 states have (on average 1.3015873015873016) internal successors, (164), 137 states have internal predecessors, (164), 8 states have call successors, (8), 1 states have call predecessors, (8), 2 states have return successors, (15), 12 states have call predecessors, (15), 8 states have call successors, (15) [2023-11-12 02:08:58,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 187 transitions. [2023-11-12 02:08:58,550 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 187 transitions. Word has length 55 [2023-11-12 02:08:58,550 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:08:58,551 INFO L495 AbstractCegarLoop]: Abstraction has 151 states and 187 transitions. [2023-11-12 02:08:58,551 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 4.375) internal successors, (35), 8 states have internal predecessors, (35), 4 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2023-11-12 02:08:58,551 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 187 transitions. [2023-11-12 02:08:58,552 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2023-11-12 02:08:58,552 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:08:58,552 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:08:58,571 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc559f19-9c13-4756-9979-b92addd167d4/bin/uautomizer-verify-uTZkv6EMXl/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)] Forceful destruction successful, exit code 0 [2023-11-12 02:08:58,765 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc559f19-9c13-4756-9979-b92addd167d4/bin/uautomizer-verify-uTZkv6EMXl/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 [2023-11-12 02:08:58,765 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] === [2023-11-12 02:08:58,766 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:08:58,766 INFO L85 PathProgramCache]: Analyzing trace with hash 785915305, now seen corresponding path program 1 times [2023-11-12 02:08:58,766 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-12 02:08:58,766 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1515302297] [2023-11-12 02:08:58,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:08:58,767 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 [2023-11-12 02:08:58,767 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc559f19-9c13-4756-9979-b92addd167d4/bin/uautomizer-verify-uTZkv6EMXl/mathsat [2023-11-12 02:08:58,768 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc559f19-9c13-4756-9979-b92addd167d4/bin/uautomizer-verify-uTZkv6EMXl/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) [2023-11-12 02:08:58,774 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc559f19-9c13-4756-9979-b92addd167d4/bin/uautomizer-verify-uTZkv6EMXl/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 [2023-11-12 02:08:58,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:08:58,967 INFO L262 TraceCheckSpWp]: Trace formula consists of 224 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-12 02:08:58,970 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 02:08:58,974 INFO L351 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 [2023-11-12 02:08:59,142 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2023-11-12 02:08:59,142 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-12 02:08:59,377 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2023-11-12 02:08:59,377 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-12 02:08:59,378 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1515302297] [2023-11-12 02:08:59,378 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1515302297] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-12 02:08:59,378 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-12 02:08:59,378 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 7 [2023-11-12 02:08:59,378 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [425404013] [2023-11-12 02:08:59,378 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-12 02:08:59,379 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-12 02:08:59,379 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-12 02:08:59,380 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-12 02:08:59,380 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2023-11-12 02:08:59,380 INFO L87 Difference]: Start difference. First operand 151 states and 187 transitions. Second operand has 8 states, 7 states have (on average 3.857142857142857) internal successors, (27), 7 states have internal predecessors, (27), 2 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-11-12 02:08:59,756 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:08:59,756 INFO L93 Difference]: Finished difference Result 168 states and 201 transitions. [2023-11-12 02:08:59,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-12 02:08:59,757 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.857142857142857) internal successors, (27), 7 states have internal predecessors, (27), 2 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 55 [2023-11-12 02:08:59,757 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:08:59,759 INFO L225 Difference]: With dead ends: 168 [2023-11-12 02:08:59,759 INFO L226 Difference]: Without dead ends: 168 [2023-11-12 02:08:59,759 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 102 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2023-11-12 02:08:59,760 INFO L413 NwaCegarLoop]: 45 mSDtfsCounter, 41 mSDsluCounter, 193 mSDsCounter, 0 mSdLazyCounter, 170 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 238 SdHoareTripleChecker+Invalid, 173 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 170 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-12 02:08:59,760 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [41 Valid, 238 Invalid, 173 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 170 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-12 02:08:59,761 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 168 states. [2023-11-12 02:08:59,767 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 168 to 152. [2023-11-12 02:08:59,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 152 states, 127 states have (on average 1.3070866141732282) internal successors, (166), 138 states have internal predecessors, (166), 8 states have call successors, (8), 1 states have call predecessors, (8), 2 states have return successors, (15), 12 states have call predecessors, (15), 8 states have call successors, (15) [2023-11-12 02:08:59,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 189 transitions. [2023-11-12 02:08:59,769 INFO L78 Accepts]: Start accepts. Automaton has 152 states and 189 transitions. Word has length 55 [2023-11-12 02:08:59,770 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:08:59,770 INFO L495 AbstractCegarLoop]: Abstraction has 152 states and 189 transitions. [2023-11-12 02:08:59,770 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.857142857142857) internal successors, (27), 7 states have internal predecessors, (27), 2 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-11-12 02:08:59,770 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states and 189 transitions. [2023-11-12 02:08:59,771 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2023-11-12 02:08:59,771 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:08:59,771 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:08:59,786 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc559f19-9c13-4756-9979-b92addd167d4/bin/uautomizer-verify-uTZkv6EMXl/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 [2023-11-12 02:08:59,985 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc559f19-9c13-4756-9979-b92addd167d4/bin/uautomizer-verify-uTZkv6EMXl/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 [2023-11-12 02:08:59,985 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] === [2023-11-12 02:08:59,986 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:08:59,986 INFO L85 PathProgramCache]: Analyzing trace with hash 785915306, now seen corresponding path program 1 times [2023-11-12 02:08:59,986 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-12 02:08:59,986 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2022047473] [2023-11-12 02:08:59,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:08:59,986 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 [2023-11-12 02:08:59,986 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc559f19-9c13-4756-9979-b92addd167d4/bin/uautomizer-verify-uTZkv6EMXl/mathsat [2023-11-12 02:08:59,988 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc559f19-9c13-4756-9979-b92addd167d4/bin/uautomizer-verify-uTZkv6EMXl/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) [2023-11-12 02:08:59,996 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc559f19-9c13-4756-9979-b92addd167d4/bin/uautomizer-verify-uTZkv6EMXl/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 [2023-11-12 02:09:00,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:09:00,172 INFO L262 TraceCheckSpWp]: Trace formula consists of 224 conjuncts, 18 conjunts are in the unsatisfiable core [2023-11-12 02:09:00,174 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 02:09:00,192 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-11-12 02:09:00,566 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2023-11-12 02:09:00,567 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-12 02:09:01,950 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2023-11-12 02:09:01,950 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-12 02:09:01,951 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2022047473] [2023-11-12 02:09:01,951 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2022047473] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-12 02:09:01,951 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-12 02:09:01,951 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2023-11-12 02:09:01,951 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1529428580] [2023-11-12 02:09:01,951 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-12 02:09:01,952 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-11-12 02:09:01,952 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-12 02:09:01,952 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-11-12 02:09:01,953 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=204, Unknown=0, NotChecked=0, Total=240 [2023-11-12 02:09:01,953 INFO L87 Difference]: Start difference. First operand 152 states and 189 transitions. Second operand has 16 states, 13 states have (on average 3.6153846153846154) internal successors, (47), 14 states have internal predecessors, (47), 4 states have call successors, (4), 3 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4)