./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/ddv-machzwd/ddv_machzwd_inw.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version dbf71c69 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac5f12ca-a6c9-4ba9-a749-d7ceda214af2/bin/uautomizer-J5u9QxTXDZ/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac5f12ca-a6c9-4ba9-a749-d7ceda214af2/bin/uautomizer-J5u9QxTXDZ/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac5f12ca-a6c9-4ba9-a749-d7ceda214af2/bin/uautomizer-J5u9QxTXDZ/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac5f12ca-a6c9-4ba9-a749-d7ceda214af2/bin/uautomizer-J5u9QxTXDZ/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/ddv-machzwd/ddv_machzwd_inw.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac5f12ca-a6c9-4ba9-a749-d7ceda214af2/bin/uautomizer-J5u9QxTXDZ/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac5f12ca-a6c9-4ba9-a749-d7ceda214af2/bin/uautomizer-J5u9QxTXDZ --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 6e6f79eda5be95b806b33aaa2a353a360ae33a1e35cc1bf6f128d14768d932de --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-dbf71c6-m [2022-10-17 10:33:05,545 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-10-17 10:33:05,548 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-10-17 10:33:05,600 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-10-17 10:33:05,601 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-10-17 10:33:05,604 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-10-17 10:33:05,607 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-10-17 10:33:05,610 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-10-17 10:33:05,612 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-10-17 10:33:05,618 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-10-17 10:33:05,619 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-10-17 10:33:05,621 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-10-17 10:33:05,622 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-10-17 10:33:05,624 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-10-17 10:33:05,626 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-10-17 10:33:05,628 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-10-17 10:33:05,630 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-10-17 10:33:05,631 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-10-17 10:33:05,633 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-10-17 10:33:05,639 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-10-17 10:33:05,641 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-10-17 10:33:05,642 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-10-17 10:33:05,645 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-10-17 10:33:05,646 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-10-17 10:33:05,656 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-10-17 10:33:05,656 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-10-17 10:33:05,657 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-10-17 10:33:05,659 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-10-17 10:33:05,659 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-10-17 10:33:05,661 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-10-17 10:33:05,662 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-10-17 10:33:05,663 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-10-17 10:33:05,665 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-10-17 10:33:05,666 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-10-17 10:33:05,667 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-10-17 10:33:05,668 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-10-17 10:33:05,668 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-10-17 10:33:05,669 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-10-17 10:33:05,669 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-10-17 10:33:05,670 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-10-17 10:33:05,670 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-10-17 10:33:05,671 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac5f12ca-a6c9-4ba9-a749-d7ceda214af2/bin/uautomizer-J5u9QxTXDZ/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2022-10-17 10:33:05,716 INFO L113 SettingsManager]: Loading preferences was successful [2022-10-17 10:33:05,718 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-10-17 10:33:05,718 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-10-17 10:33:05,718 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-10-17 10:33:05,719 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-10-17 10:33:05,720 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-10-17 10:33:05,720 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-10-17 10:33:05,720 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-10-17 10:33:05,721 INFO L138 SettingsManager]: * Use SBE=true [2022-10-17 10:33:05,721 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-10-17 10:33:05,722 INFO L138 SettingsManager]: * sizeof long=4 [2022-10-17 10:33:05,722 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-10-17 10:33:05,722 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-10-17 10:33:05,723 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-10-17 10:33:05,723 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-10-17 10:33:05,723 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-10-17 10:33:05,723 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-10-17 10:33:05,723 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-10-17 10:33:05,724 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-10-17 10:33:05,724 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-10-17 10:33:05,724 INFO L138 SettingsManager]: * sizeof long double=12 [2022-10-17 10:33:05,724 INFO L138 SettingsManager]: * Use constant arrays=true [2022-10-17 10:33:05,725 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-10-17 10:33:05,725 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-10-17 10:33:05,725 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-10-17 10:33:05,725 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-17 10:33:05,742 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-10-17 10:33:05,742 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-10-17 10:33:05,742 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-10-17 10:33:05,742 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-10-17 10:33:05,743 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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_ac5f12ca-a6c9-4ba9-a749-d7ceda214af2/bin/uautomizer-J5u9QxTXDZ/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac5f12ca-a6c9-4ba9-a749-d7ceda214af2/bin/uautomizer-J5u9QxTXDZ Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6e6f79eda5be95b806b33aaa2a353a360ae33a1e35cc1bf6f128d14768d932de [2022-10-17 10:33:06,054 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-10-17 10:33:06,075 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-10-17 10:33:06,077 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-10-17 10:33:06,079 INFO L271 PluginConnector]: Initializing CDTParser... [2022-10-17 10:33:06,079 INFO L275 PluginConnector]: CDTParser initialized [2022-10-17 10:33:06,081 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac5f12ca-a6c9-4ba9-a749-d7ceda214af2/bin/uautomizer-J5u9QxTXDZ/../../sv-benchmarks/c/ddv-machzwd/ddv_machzwd_inw.i [2022-10-17 10:33:06,146 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac5f12ca-a6c9-4ba9-a749-d7ceda214af2/bin/uautomizer-J5u9QxTXDZ/data/09858d0bd/195d68fd23e74259826816783e6b5aa5/FLAG7fa212fd6 [2022-10-17 10:33:06,745 INFO L306 CDTParser]: Found 1 translation units. [2022-10-17 10:33:06,746 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac5f12ca-a6c9-4ba9-a749-d7ceda214af2/sv-benchmarks/c/ddv-machzwd/ddv_machzwd_inw.i [2022-10-17 10:33:06,806 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac5f12ca-a6c9-4ba9-a749-d7ceda214af2/bin/uautomizer-J5u9QxTXDZ/data/09858d0bd/195d68fd23e74259826816783e6b5aa5/FLAG7fa212fd6 [2022-10-17 10:33:06,959 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac5f12ca-a6c9-4ba9-a749-d7ceda214af2/bin/uautomizer-J5u9QxTXDZ/data/09858d0bd/195d68fd23e74259826816783e6b5aa5 [2022-10-17 10:33:06,963 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-10-17 10:33:06,965 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-10-17 10:33:06,970 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-10-17 10:33:06,970 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-10-17 10:33:06,973 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-10-17 10:33:06,974 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.10 10:33:06" (1/1) ... [2022-10-17 10:33:06,976 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@333db285 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:33:06, skipping insertion in model container [2022-10-17 10:33:06,976 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.10 10:33:06" (1/1) ... [2022-10-17 10:33:06,983 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-10-17 10:33:07,070 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-10-17 10:33:07,313 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac5f12ca-a6c9-4ba9-a749-d7ceda214af2/sv-benchmarks/c/ddv-machzwd/ddv_machzwd_inw.i[452,465] [2022-10-17 10:33:08,596 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-17 10:33:08,638 ERROR L326 MainTranslator]: Unsupported Syntax: Found a cast between two array/pointer types of different sizes while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) [2022-10-17 10:33:08,639 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@2426852a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:33:08, skipping insertion in model container [2022-10-17 10:33:08,639 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-10-17 10:33:08,639 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2022-10-17 10:33:08,641 INFO L158 Benchmark]: Toolchain (without parser) took 1675.55ms. Allocated memory is still 111.1MB. Free memory was 87.0MB in the beginning and 55.6MB in the end (delta: 31.5MB). Peak memory consumption was 31.5MB. Max. memory is 16.1GB. [2022-10-17 10:33:08,642 INFO L158 Benchmark]: CDTParser took 0.27ms. Allocated memory is still 111.1MB. Free memory is still 82.4MB. There was no memory consumed. Max. memory is 16.1GB. [2022-10-17 10:33:08,643 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1669.19ms. Allocated memory is still 111.1MB. Free memory was 86.7MB in the beginning and 55.8MB in the end (delta: 31.0MB). Peak memory consumption was 31.5MB. Max. memory is 16.1GB. [2022-10-17 10:33:08,645 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27ms. Allocated memory is still 111.1MB. Free memory is still 82.4MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 1669.19ms. Allocated memory is still 111.1MB. Free memory was 86.7MB in the beginning and 55.8MB in the end (delta: 31.0MB). Peak memory consumption was 31.5MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 2976]: 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/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac5f12ca-a6c9-4ba9-a749-d7ceda214af2/bin/uautomizer-J5u9QxTXDZ/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac5f12ca-a6c9-4ba9-a749-d7ceda214af2/bin/uautomizer-J5u9QxTXDZ/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac5f12ca-a6c9-4ba9-a749-d7ceda214af2/bin/uautomizer-J5u9QxTXDZ/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac5f12ca-a6c9-4ba9-a749-d7ceda214af2/bin/uautomizer-J5u9QxTXDZ/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/ddv-machzwd/ddv_machzwd_inw.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac5f12ca-a6c9-4ba9-a749-d7ceda214af2/bin/uautomizer-J5u9QxTXDZ/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac5f12ca-a6c9-4ba9-a749-d7ceda214af2/bin/uautomizer-J5u9QxTXDZ --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 6e6f79eda5be95b806b33aaa2a353a360ae33a1e35cc1bf6f128d14768d932de --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-dbf71c6-m [2022-10-17 10:33:10,818 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-10-17 10:33:10,820 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-10-17 10:33:10,864 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-10-17 10:33:10,864 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-10-17 10:33:10,870 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-10-17 10:33:10,872 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-10-17 10:33:10,880 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-10-17 10:33:10,887 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-10-17 10:33:10,888 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-10-17 10:33:10,889 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-10-17 10:33:10,890 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-10-17 10:33:10,891 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-10-17 10:33:10,892 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-10-17 10:33:10,894 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-10-17 10:33:10,895 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-10-17 10:33:10,896 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-10-17 10:33:10,897 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-10-17 10:33:10,902 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-10-17 10:33:10,915 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-10-17 10:33:10,918 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-10-17 10:33:10,927 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-10-17 10:33:10,928 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-10-17 10:33:10,929 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-10-17 10:33:10,934 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-10-17 10:33:10,934 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-10-17 10:33:10,935 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-10-17 10:33:10,936 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-10-17 10:33:10,937 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-10-17 10:33:10,940 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-10-17 10:33:10,941 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-10-17 10:33:10,942 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-10-17 10:33:10,944 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-10-17 10:33:10,945 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-10-17 10:33:10,946 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-10-17 10:33:10,946 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-10-17 10:33:10,947 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-10-17 10:33:10,947 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-10-17 10:33:10,948 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-10-17 10:33:10,950 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-10-17 10:33:10,950 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-10-17 10:33:10,951 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac5f12ca-a6c9-4ba9-a749-d7ceda214af2/bin/uautomizer-J5u9QxTXDZ/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2022-10-17 10:33:11,005 INFO L113 SettingsManager]: Loading preferences was successful [2022-10-17 10:33:11,005 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-10-17 10:33:11,006 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-10-17 10:33:11,006 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-10-17 10:33:11,007 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-10-17 10:33:11,008 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-10-17 10:33:11,009 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-10-17 10:33:11,009 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-10-17 10:33:11,009 INFO L138 SettingsManager]: * Use SBE=true [2022-10-17 10:33:11,010 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-10-17 10:33:11,011 INFO L138 SettingsManager]: * sizeof long=4 [2022-10-17 10:33:11,011 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-10-17 10:33:11,011 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-10-17 10:33:11,011 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-10-17 10:33:11,011 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-10-17 10:33:11,011 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-10-17 10:33:11,012 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-10-17 10:33:11,012 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-10-17 10:33:11,012 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-10-17 10:33:11,012 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-10-17 10:33:11,012 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-10-17 10:33:11,013 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-10-17 10:33:11,013 INFO L138 SettingsManager]: * sizeof long double=12 [2022-10-17 10:33:11,013 INFO L138 SettingsManager]: * Use constant arrays=true [2022-10-17 10:33:11,013 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-10-17 10:33:11,013 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-10-17 10:33:11,014 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-10-17 10:33:11,014 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-17 10:33:11,014 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-10-17 10:33:11,014 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-10-17 10:33:11,014 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-10-17 10:33:11,015 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-10-17 10:33:11,015 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-10-17 10:33:11,015 INFO L138 SettingsManager]: * Logic for external solver=AUFBV 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_ac5f12ca-a6c9-4ba9-a749-d7ceda214af2/bin/uautomizer-J5u9QxTXDZ/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac5f12ca-a6c9-4ba9-a749-d7ceda214af2/bin/uautomizer-J5u9QxTXDZ Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6e6f79eda5be95b806b33aaa2a353a360ae33a1e35cc1bf6f128d14768d932de [2022-10-17 10:33:11,412 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-10-17 10:33:11,444 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-10-17 10:33:11,448 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-10-17 10:33:11,449 INFO L271 PluginConnector]: Initializing CDTParser... [2022-10-17 10:33:11,450 INFO L275 PluginConnector]: CDTParser initialized [2022-10-17 10:33:11,451 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac5f12ca-a6c9-4ba9-a749-d7ceda214af2/bin/uautomizer-J5u9QxTXDZ/../../sv-benchmarks/c/ddv-machzwd/ddv_machzwd_inw.i [2022-10-17 10:33:11,525 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac5f12ca-a6c9-4ba9-a749-d7ceda214af2/bin/uautomizer-J5u9QxTXDZ/data/93025b1d8/262eb8979d0b4d6bae965488abdbb8c2/FLAG809463c61 [2022-10-17 10:33:12,264 INFO L306 CDTParser]: Found 1 translation units. [2022-10-17 10:33:12,265 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac5f12ca-a6c9-4ba9-a749-d7ceda214af2/sv-benchmarks/c/ddv-machzwd/ddv_machzwd_inw.i [2022-10-17 10:33:12,304 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac5f12ca-a6c9-4ba9-a749-d7ceda214af2/bin/uautomizer-J5u9QxTXDZ/data/93025b1d8/262eb8979d0b4d6bae965488abdbb8c2/FLAG809463c61 [2022-10-17 10:33:12,424 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac5f12ca-a6c9-4ba9-a749-d7ceda214af2/bin/uautomizer-J5u9QxTXDZ/data/93025b1d8/262eb8979d0b4d6bae965488abdbb8c2 [2022-10-17 10:33:12,427 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-10-17 10:33:12,431 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-10-17 10:33:12,433 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-10-17 10:33:12,433 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-10-17 10:33:12,436 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-10-17 10:33:12,437 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.10 10:33:12" (1/1) ... [2022-10-17 10:33:12,440 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@335b499b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:33:12, skipping insertion in model container [2022-10-17 10:33:12,440 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.10 10:33:12" (1/1) ... [2022-10-17 10:33:12,448 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-10-17 10:33:12,523 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-10-17 10:33:12,707 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac5f12ca-a6c9-4ba9-a749-d7ceda214af2/sv-benchmarks/c/ddv-machzwd/ddv_machzwd_inw.i[452,465] [2022-10-17 10:33:14,107 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-17 10:33:14,138 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2022-10-17 10:33:14,161 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-10-17 10:33:14,163 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac5f12ca-a6c9-4ba9-a749-d7ceda214af2/sv-benchmarks/c/ddv-machzwd/ddv_machzwd_inw.i[452,465] [2022-10-17 10:33:14,285 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-17 10:33:14,335 INFO L203 MainTranslator]: Completed pre-run [2022-10-17 10:33:14,346 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac5f12ca-a6c9-4ba9-a749-d7ceda214af2/sv-benchmarks/c/ddv-machzwd/ddv_machzwd_inw.i[452,465] [2022-10-17 10:33:14,504 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-17 10:33:14,692 INFO L208 MainTranslator]: Completed translation [2022-10-17 10:33:14,693 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:33:14 WrapperNode [2022-10-17 10:33:14,693 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-10-17 10:33:14,694 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-10-17 10:33:14,695 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-10-17 10:33:14,695 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-10-17 10:33:14,702 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:33:14" (1/1) ... [2022-10-17 10:33:14,763 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:33:14" (1/1) ... [2022-10-17 10:33:14,859 INFO L138 Inliner]: procedures = 482, calls = 839, calls flagged for inlining = 54, calls inlined = 38, statements flattened = 979 [2022-10-17 10:33:14,859 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-10-17 10:33:14,860 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-10-17 10:33:14,860 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-10-17 10:33:14,860 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-10-17 10:33:14,869 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:33:14" (1/1) ... [2022-10-17 10:33:14,870 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:33:14" (1/1) ... [2022-10-17 10:33:14,880 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:33:14" (1/1) ... [2022-10-17 10:33:14,881 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:33:14" (1/1) ... [2022-10-17 10:33:14,924 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:33:14" (1/1) ... [2022-10-17 10:33:14,945 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:33:14" (1/1) ... [2022-10-17 10:33:14,960 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:33:14" (1/1) ... [2022-10-17 10:33:14,985 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:33:14" (1/1) ... [2022-10-17 10:33:15,009 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-10-17 10:33:15,019 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-10-17 10:33:15,021 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-10-17 10:33:15,021 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-10-17 10:33:15,022 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:33:14" (1/1) ... [2022-10-17 10:33:15,028 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-17 10:33:15,039 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac5f12ca-a6c9-4ba9-a749-d7ceda214af2/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:33:15,055 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac5f12ca-a6c9-4ba9-a749-d7ceda214af2/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-10-17 10:33:15,067 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac5f12ca-a6c9-4ba9-a749-d7ceda214af2/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-10-17 10:33:15,098 INFO L130 BoogieDeclarations]: Found specification of procedure zf_timer_off [2022-10-17 10:33:15,098 INFO L138 BoogieDeclarations]: Found implementation of procedure zf_timer_off [2022-10-17 10:33:15,098 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~X~C_UINT~X~C_ULONG~TO~C_INT [2022-10-17 10:33:15,098 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~X~C_UINT~X~C_ULONG~TO~C_INT [2022-10-17 10:33:15,098 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-10-17 10:33:15,099 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_atomic_begin [2022-10-17 10:33:15,099 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2022-10-17 10:33:15,099 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2022-10-17 10:33:15,099 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-10-17 10:33:15,099 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE2 [2022-10-17 10:33:15,099 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-10-17 10:33:15,099 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4 [2022-10-17 10:33:15,100 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock [2022-10-17 10:33:15,100 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock [2022-10-17 10:33:15,100 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-10-17 10:33:15,100 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_atomic_end [2022-10-17 10:33:15,100 INFO L130 BoogieDeclarations]: Found specification of procedure zf_get_control [2022-10-17 10:33:15,100 INFO L138 BoogieDeclarations]: Found implementation of procedure zf_get_control [2022-10-17 10:33:15,100 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~C_INT [2022-10-17 10:33:15,100 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~C_INT [2022-10-17 10:33:15,101 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-10-17 10:33:15,101 INFO L130 BoogieDeclarations]: Found specification of procedure request_region [2022-10-17 10:33:15,101 INFO L138 BoogieDeclarations]: Found implementation of procedure request_region [2022-10-17 10:33:15,101 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-10-17 10:33:15,101 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-10-17 10:33:15,101 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2022-10-17 10:33:15,101 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2022-10-17 10:33:15,102 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock_irqsave [2022-10-17 10:33:15,102 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock_irqsave [2022-10-17 10:33:15,102 INFO L130 BoogieDeclarations]: Found specification of procedure release_region [2022-10-17 10:33:15,102 INFO L138 BoogieDeclarations]: Found implementation of procedure release_region [2022-10-17 10:33:15,103 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-10-17 10:33:15,103 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-10-17 10:33:15,103 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock_init [2022-10-17 10:33:15,103 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock_init [2022-10-17 10:33:15,103 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE8 [2022-10-17 10:33:15,103 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2022-10-17 10:33:15,104 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2 [2022-10-17 10:33:15,104 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2022-10-17 10:33:15,104 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-10-17 10:33:15,104 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-10-17 10:33:15,104 INFO L130 BoogieDeclarations]: Found specification of procedure del_timer [2022-10-17 10:33:15,104 INFO L138 BoogieDeclarations]: Found implementation of procedure del_timer [2022-10-17 10:33:15,104 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-10-17 10:33:15,104 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-10-17 10:33:15,105 INFO L130 BoogieDeclarations]: Found specification of procedure add_timer [2022-10-17 10:33:15,105 INFO L138 BoogieDeclarations]: Found implementation of procedure add_timer [2022-10-17 10:33:15,105 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE8 [2022-10-17 10:33:15,106 INFO L130 BoogieDeclarations]: Found specification of procedure cdev_add [2022-10-17 10:33:15,106 INFO L138 BoogieDeclarations]: Found implementation of procedure cdev_add [2022-10-17 10:33:15,107 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2022-10-17 10:33:15,107 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2 [2022-10-17 10:33:15,108 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2022-10-17 10:33:15,109 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-10-17 10:33:15,109 INFO L130 BoogieDeclarations]: Found specification of procedure printk [2022-10-17 10:33:15,109 INFO L138 BoogieDeclarations]: Found implementation of procedure printk [2022-10-17 10:33:15,109 INFO L130 BoogieDeclarations]: Found specification of procedure outw [2022-10-17 10:33:15,110 INFO L138 BoogieDeclarations]: Found implementation of procedure outw [2022-10-17 10:33:15,110 INFO L130 BoogieDeclarations]: Found specification of procedure outb [2022-10-17 10:33:15,110 INFO L138 BoogieDeclarations]: Found implementation of procedure outb [2022-10-17 10:33:15,110 INFO L130 BoogieDeclarations]: Found specification of procedure misc_deregister [2022-10-17 10:33:15,110 INFO L138 BoogieDeclarations]: Found implementation of procedure misc_deregister [2022-10-17 10:33:15,110 INFO L130 BoogieDeclarations]: Found specification of procedure assert_context_process [2022-10-17 10:33:15,111 INFO L138 BoogieDeclarations]: Found implementation of procedure assert_context_process [2022-10-17 10:33:15,111 INFO L130 BoogieDeclarations]: Found specification of procedure zf_set_control [2022-10-17 10:33:15,111 INFO L138 BoogieDeclarations]: Found implementation of procedure zf_set_control [2022-10-17 10:33:15,111 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~X~C_ULONG~X~$Pointer$~TO~C_LONG [2022-10-17 10:33:15,111 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~X~C_ULONG~X~$Pointer$~TO~C_LONG [2022-10-17 10:33:15,112 INFO L130 BoogieDeclarations]: Found specification of procedure zf_readw [2022-10-17 10:33:15,112 INFO L138 BoogieDeclarations]: Found implementation of procedure zf_readw [2022-10-17 10:33:15,112 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE4 [2022-10-17 10:33:15,112 INFO L130 BoogieDeclarations]: Found specification of procedure zf_ping [2022-10-17 10:33:15,113 INFO L138 BoogieDeclarations]: Found implementation of procedure zf_ping [2022-10-17 10:33:15,113 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock [2022-10-17 10:33:15,113 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock [2022-10-17 10:33:15,113 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~C_ULONG~TO~VOID [2022-10-17 10:33:15,113 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~C_ULONG~TO~VOID [2022-10-17 10:33:15,616 INFO L235 CfgBuilder]: Building ICFG [2022-10-17 10:33:15,624 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-10-17 10:33:21,490 INFO L276 CfgBuilder]: Performing block encoding [2022-10-17 10:33:21,518 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-10-17 10:33:21,523 INFO L300 CfgBuilder]: Removed 4 assume(true) statements. [2022-10-17 10:33:21,529 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.10 10:33:21 BoogieIcfgContainer [2022-10-17 10:33:21,529 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-10-17 10:33:21,532 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-10-17 10:33:21,533 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-10-17 10:33:21,536 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-10-17 10:33:21,536 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.10 10:33:12" (1/3) ... [2022-10-17 10:33:21,537 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@58866265 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.10 10:33:21, skipping insertion in model container [2022-10-17 10:33:21,537 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:33:14" (2/3) ... [2022-10-17 10:33:21,538 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@58866265 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.10 10:33:21, skipping insertion in model container [2022-10-17 10:33:21,539 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.10 10:33:21" (3/3) ... [2022-10-17 10:33:21,542 INFO L112 eAbstractionObserver]: Analyzing ICFG ddv_machzwd_inw.i [2022-10-17 10:33:21,562 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-10-17 10:33:21,562 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 206 error locations. [2022-10-17 10:33:21,637 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-10-17 10:33:21,646 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=FINITE_AUTOMATA, 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;@3564c745, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-10-17 10:33:21,646 INFO L358 AbstractCegarLoop]: Starting to check reachability of 206 error locations. [2022-10-17 10:33:21,657 INFO L276 IsEmpty]: Start isEmpty. Operand has 671 states, 360 states have (on average 1.8166666666666667) internal successors, (654), 571 states have internal predecessors, (654), 78 states have call successors, (78), 26 states have call predecessors, (78), 26 states have return successors, (78), 78 states have call predecessors, (78), 78 states have call successors, (78) [2022-10-17 10:33:21,664 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-10-17 10:33:21,664 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:33:21,664 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-10-17 10:33:21,665 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting spin_lock_initErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [spin_lock_initErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, spin_lock_initErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, spin_lock_initErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 203 more)] === [2022-10-17 10:33:21,670 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:33:21,670 INFO L85 PathProgramCache]: Analyzing trace with hash 346313650, now seen corresponding path program 1 times [2022-10-17 10:33:21,685 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-10-17 10:33:21,686 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1332580441] [2022-10-17 10:33:21,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:33:21,686 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-10-17 10:33:21,687 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac5f12ca-a6c9-4ba9-a749-d7ceda214af2/bin/uautomizer-J5u9QxTXDZ/mathsat [2022-10-17 10:33:21,689 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac5f12ca-a6c9-4ba9-a749-d7ceda214af2/bin/uautomizer-J5u9QxTXDZ/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-10-17 10:33:21,701 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac5f12ca-a6c9-4ba9-a749-d7ceda214af2/bin/uautomizer-J5u9QxTXDZ/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-10-17 10:33:22,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:33:22,220 INFO L263 TraceCheckSpWp]: Trace formula consists of 472 conjuncts, 5 conjunts are in the unsatisfiable core [2022-10-17 10:33:22,226 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 10:33:22,332 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:33:22,333 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-17 10:33:22,334 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-10-17 10:33:22,334 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1332580441] [2022-10-17 10:33:22,334 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1332580441] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:33:22,335 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:33:22,335 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-10-17 10:33:22,337 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [628266498] [2022-10-17 10:33:22,337 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:33:22,342 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-10-17 10:33:22,342 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-10-17 10:33:22,370 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-10-17 10:33:22,371 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-10-17 10:33:22,375 INFO L87 Difference]: Start difference. First operand has 671 states, 360 states have (on average 1.8166666666666667) internal successors, (654), 571 states have internal predecessors, (654), 78 states have call successors, (78), 26 states have call predecessors, (78), 26 states have return successors, (78), 78 states have call predecessors, (78), 78 states have call successors, (78) Second operand has 5 states, 4 states have (on average 1.0) internal successors, (4), 3 states have internal predecessors, (4), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:33:24,421 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-10-17 10:33:26,434 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-10-17 10:33:29,602 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:33:29,602 INFO L93 Difference]: Finished difference Result 1214 states and 1453 transitions. [2022-10-17 10:33:29,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-10-17 10:33:29,605 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 1.0) internal successors, (4), 3 states have internal predecessors, (4), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2022-10-17 10:33:29,605 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:33:29,624 INFO L225 Difference]: With dead ends: 1214 [2022-10-17 10:33:29,625 INFO L226 Difference]: Without dead ends: 1210 [2022-10-17 10:33:29,626 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-10-17 10:33:29,629 INFO L413 NwaCegarLoop]: 764 mSDtfsCounter, 692 mSDsluCounter, 1740 mSDsCounter, 0 mSdLazyCounter, 1106 mSolverCounterSat, 4 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 693 SdHoareTripleChecker+Valid, 2504 SdHoareTripleChecker+Invalid, 1112 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 1106 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.0s IncrementalHoareTripleChecker+Time [2022-10-17 10:33:29,630 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [693 Valid, 2504 Invalid, 1112 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 1106 Invalid, 2 Unknown, 0 Unchecked, 7.0s Time] [2022-10-17 10:33:29,650 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1210 states. [2022-10-17 10:33:29,729 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1210 to 995. [2022-10-17 10:33:29,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 995 states, 601 states have (on average 1.7970049916805324) internal successors, (1080), 822 states have internal predecessors, (1080), 138 states have call successors, (138), 50 states have call predecessors, (138), 50 states have return successors, (138), 131 states have call predecessors, (138), 138 states have call successors, (138) [2022-10-17 10:33:29,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 995 states to 995 states and 1356 transitions. [2022-10-17 10:33:29,743 INFO L78 Accepts]: Start accepts. Automaton has 995 states and 1356 transitions. Word has length 5 [2022-10-17 10:33:29,744 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:33:29,744 INFO L495 AbstractCegarLoop]: Abstraction has 995 states and 1356 transitions. [2022-10-17 10:33:29,744 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 1.0) internal successors, (4), 3 states have internal predecessors, (4), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:33:29,744 INFO L276 IsEmpty]: Start isEmpty. Operand 995 states and 1356 transitions. [2022-10-17 10:33:29,745 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-10-17 10:33:29,745 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:33:29,745 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-10-17 10:33:29,767 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac5f12ca-a6c9-4ba9-a749-d7ceda214af2/bin/uautomizer-J5u9QxTXDZ/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2022-10-17 10:33:29,968 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac5f12ca-a6c9-4ba9-a749-d7ceda214af2/bin/uautomizer-J5u9QxTXDZ/mathsat -unsat_core_generation=3 [2022-10-17 10:33:29,968 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting spin_lock_initErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [spin_lock_initErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, spin_lock_initErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, spin_lock_initErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 203 more)] === [2022-10-17 10:33:29,969 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:33:29,969 INFO L85 PathProgramCache]: Analyzing trace with hash 346313651, now seen corresponding path program 1 times [2022-10-17 10:33:29,970 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-10-17 10:33:29,970 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1071134746] [2022-10-17 10:33:29,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:33:29,971 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-10-17 10:33:29,971 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac5f12ca-a6c9-4ba9-a749-d7ceda214af2/bin/uautomizer-J5u9QxTXDZ/mathsat [2022-10-17 10:33:29,972 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac5f12ca-a6c9-4ba9-a749-d7ceda214af2/bin/uautomizer-J5u9QxTXDZ/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-10-17 10:33:29,983 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac5f12ca-a6c9-4ba9-a749-d7ceda214af2/bin/uautomizer-J5u9QxTXDZ/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2022-10-17 10:33:30,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:33:30,438 INFO L263 TraceCheckSpWp]: Trace formula consists of 472 conjuncts, 8 conjunts are in the unsatisfiable core [2022-10-17 10:33:30,440 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 10:33:30,534 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:33:30,534 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-17 10:33:30,535 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-10-17 10:33:30,535 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1071134746] [2022-10-17 10:33:30,535 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1071134746] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:33:30,535 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:33:30,535 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-10-17 10:33:30,535 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [675927771] [2022-10-17 10:33:30,535 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:33:30,536 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-10-17 10:33:30,537 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-10-17 10:33:30,537 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-10-17 10:33:30,537 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-10-17 10:33:30,537 INFO L87 Difference]: Start difference. First operand 995 states and 1356 transitions. Second operand has 5 states, 4 states have (on average 1.0) internal successors, (4), 3 states have internal predecessors, (4), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:33:32,567 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-10-17 10:33:34,578 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-10-17 10:33:37,381 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:33:37,381 INFO L93 Difference]: Finished difference Result 1132 states and 1453 transitions. [2022-10-17 10:33:37,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-10-17 10:33:37,383 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 1.0) internal successors, (4), 3 states have internal predecessors, (4), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2022-10-17 10:33:37,383 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:33:37,393 INFO L225 Difference]: With dead ends: 1132 [2022-10-17 10:33:37,394 INFO L226 Difference]: Without dead ends: 1132 [2022-10-17 10:33:37,394 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-10-17 10:33:37,395 INFO L413 NwaCegarLoop]: 845 mSDtfsCounter, 273 mSDsluCounter, 1805 mSDsCounter, 0 mSdLazyCounter, 850 mSolverCounterSat, 1 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 274 SdHoareTripleChecker+Valid, 2650 SdHoareTripleChecker+Invalid, 853 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 850 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.7s IncrementalHoareTripleChecker+Time [2022-10-17 10:33:37,396 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [274 Valid, 2650 Invalid, 853 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 850 Invalid, 2 Unknown, 0 Unchecked, 6.7s Time] [2022-10-17 10:33:37,398 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1132 states. [2022-10-17 10:33:37,429 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1132 to 1071. [2022-10-17 10:33:37,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1071 states, 645 states have (on average 1.758139534883721) internal successors, (1134), 867 states have internal predecessors, (1134), 157 states have call successors, (157), 63 states have call predecessors, (157), 63 states have return successors, (157), 150 states have call predecessors, (157), 157 states have call successors, (157) [2022-10-17 10:33:37,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1071 states to 1071 states and 1448 transitions. [2022-10-17 10:33:37,440 INFO L78 Accepts]: Start accepts. Automaton has 1071 states and 1448 transitions. Word has length 5 [2022-10-17 10:33:37,440 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:33:37,441 INFO L495 AbstractCegarLoop]: Abstraction has 1071 states and 1448 transitions. [2022-10-17 10:33:37,441 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 1.0) internal successors, (4), 3 states have internal predecessors, (4), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:33:37,441 INFO L276 IsEmpty]: Start isEmpty. Operand 1071 states and 1448 transitions. [2022-10-17 10:33:37,442 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-10-17 10:33:37,442 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:33:37,442 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:33:37,465 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac5f12ca-a6c9-4ba9-a749-d7ceda214af2/bin/uautomizer-J5u9QxTXDZ/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2022-10-17 10:33:37,660 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac5f12ca-a6c9-4ba9-a749-d7ceda214af2/bin/uautomizer-J5u9QxTXDZ/mathsat -unsat_core_generation=3 [2022-10-17 10:33:37,660 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [spin_lock_initErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, spin_lock_initErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, spin_lock_initErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 203 more)] === [2022-10-17 10:33:37,661 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:33:37,661 INFO L85 PathProgramCache]: Analyzing trace with hash 1264119090, now seen corresponding path program 1 times [2022-10-17 10:33:37,661 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-10-17 10:33:37,662 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [942327746] [2022-10-17 10:33:37,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:33:37,662 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-10-17 10:33:37,662 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac5f12ca-a6c9-4ba9-a749-d7ceda214af2/bin/uautomizer-J5u9QxTXDZ/mathsat [2022-10-17 10:33:37,665 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac5f12ca-a6c9-4ba9-a749-d7ceda214af2/bin/uautomizer-J5u9QxTXDZ/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-10-17 10:33:37,666 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac5f12ca-a6c9-4ba9-a749-d7ceda214af2/bin/uautomizer-J5u9QxTXDZ/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2022-10-17 10:33:38,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:33:38,046 INFO L263 TraceCheckSpWp]: Trace formula consists of 520 conjuncts, 3 conjunts are in the unsatisfiable core [2022-10-17 10:33:38,048 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 10:33:38,140 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:33:38,140 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-17 10:33:38,140 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-10-17 10:33:38,140 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [942327746] [2022-10-17 10:33:38,141 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [942327746] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:33:38,141 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:33:38,141 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-10-17 10:33:38,141 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [341091450] [2022-10-17 10:33:38,141 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:33:38,141 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-17 10:33:38,141 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-10-17 10:33:38,142 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-17 10:33:38,142 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-17 10:33:38,142 INFO L87 Difference]: Start difference. First operand 1071 states and 1448 transitions. Second operand has 3 states, 2 states have (on average 4.5) internal successors, (9), 2 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) [2022-10-17 10:33:39,596 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:33:39,596 INFO L93 Difference]: Finished difference Result 1279 states and 1536 transitions. [2022-10-17 10:33:39,597 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-17 10:33:39,597 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 2 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 [2022-10-17 10:33:39,597 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:33:39,605 INFO L225 Difference]: With dead ends: 1279 [2022-10-17 10:33:39,605 INFO L226 Difference]: Without dead ends: 1279 [2022-10-17 10:33:39,605 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-17 10:33:39,607 INFO L413 NwaCegarLoop]: 747 mSDtfsCounter, 665 mSDsluCounter, 553 mSDsCounter, 0 mSdLazyCounter, 389 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 665 SdHoareTripleChecker+Valid, 1300 SdHoareTripleChecker+Invalid, 396 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 389 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-10-17 10:33:39,607 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [665 Valid, 1300 Invalid, 396 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 389 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-10-17 10:33:39,610 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1279 states. [2022-10-17 10:33:39,637 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1279 to 1070. [2022-10-17 10:33:39,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1070 states, 645 states have (on average 1.7503875968992249) internal successors, (1129), 866 states have internal predecessors, (1129), 157 states have call successors, (157), 63 states have call predecessors, (157), 63 states have return successors, (157), 150 states have call predecessors, (157), 157 states have call successors, (157) [2022-10-17 10:33:39,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1070 states to 1070 states and 1443 transitions. [2022-10-17 10:33:39,646 INFO L78 Accepts]: Start accepts. Automaton has 1070 states and 1443 transitions. Word has length 11 [2022-10-17 10:33:39,647 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:33:39,647 INFO L495 AbstractCegarLoop]: Abstraction has 1070 states and 1443 transitions. [2022-10-17 10:33:39,647 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 2 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) [2022-10-17 10:33:39,647 INFO L276 IsEmpty]: Start isEmpty. Operand 1070 states and 1443 transitions. [2022-10-17 10:33:39,648 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-10-17 10:33:39,648 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:33:39,648 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:33:39,666 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac5f12ca-a6c9-4ba9-a749-d7ceda214af2/bin/uautomizer-J5u9QxTXDZ/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2022-10-17 10:33:39,863 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac5f12ca-a6c9-4ba9-a749-d7ceda214af2/bin/uautomizer-J5u9QxTXDZ/mathsat -unsat_core_generation=3 [2022-10-17 10:33:39,863 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [spin_lock_initErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, spin_lock_initErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, spin_lock_initErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 203 more)] === [2022-10-17 10:33:39,864 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:33:39,864 INFO L85 PathProgramCache]: Analyzing trace with hash 1264119091, now seen corresponding path program 1 times [2022-10-17 10:33:39,864 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-10-17 10:33:39,864 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [184454907] [2022-10-17 10:33:39,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:33:39,865 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-10-17 10:33:39,865 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac5f12ca-a6c9-4ba9-a749-d7ceda214af2/bin/uautomizer-J5u9QxTXDZ/mathsat [2022-10-17 10:33:39,866 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac5f12ca-a6c9-4ba9-a749-d7ceda214af2/bin/uautomizer-J5u9QxTXDZ/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-10-17 10:33:39,907 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac5f12ca-a6c9-4ba9-a749-d7ceda214af2/bin/uautomizer-J5u9QxTXDZ/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2022-10-17 10:33:40,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:33:40,305 INFO L263 TraceCheckSpWp]: Trace formula consists of 520 conjuncts, 5 conjunts are in the unsatisfiable core [2022-10-17 10:33:40,307 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 10:33:40,456 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:33:40,456 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-17 10:33:40,456 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-10-17 10:33:40,456 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [184454907] [2022-10-17 10:33:40,456 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [184454907] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:33:40,456 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:33:40,457 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-10-17 10:33:40,457 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1370864714] [2022-10-17 10:33:40,457 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:33:40,457 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-10-17 10:33:40,457 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-10-17 10:33:40,458 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-10-17 10:33:40,458 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-10-17 10:33:40,458 INFO L87 Difference]: Start difference. First operand 1070 states and 1443 transitions. Second operand has 4 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)