./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/ddv-machzwd/ddv_machzwd_outb.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_1e9293a0-f2a6-4ff1-bf26-eeb1f299bfa2/bin/uautomizer-J5u9QxTXDZ/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e9293a0-f2a6-4ff1-bf26-eeb1f299bfa2/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_1e9293a0-f2a6-4ff1-bf26-eeb1f299bfa2/bin/uautomizer-J5u9QxTXDZ/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e9293a0-f2a6-4ff1-bf26-eeb1f299bfa2/bin/uautomizer-J5u9QxTXDZ/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/ddv-machzwd/ddv_machzwd_outb.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e9293a0-f2a6-4ff1-bf26-eeb1f299bfa2/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_1e9293a0-f2a6-4ff1-bf26-eeb1f299bfa2/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 b9ba053a0d2bb5cff65ef20f502acdb8ce89a9e82653cf0711701cf2b8f86a02 --- 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 10:29:45,731 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-10-17 10:29:45,735 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-10-17 10:29:45,794 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-10-17 10:29:45,796 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-10-17 10:29:45,802 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-10-17 10:29:45,803 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-10-17 10:29:45,806 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-10-17 10:29:45,808 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-10-17 10:29:45,810 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-10-17 10:29:45,811 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-10-17 10:29:45,812 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-10-17 10:29:45,813 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-10-17 10:29:45,814 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-10-17 10:29:45,816 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-10-17 10:29:45,817 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-10-17 10:29:45,819 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-10-17 10:29:45,820 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-10-17 10:29:45,822 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-10-17 10:29:45,825 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-10-17 10:29:45,827 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-10-17 10:29:45,829 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-10-17 10:29:45,831 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-10-17 10:29:45,832 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-10-17 10:29:45,838 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-10-17 10:29:45,838 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-10-17 10:29:45,839 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-10-17 10:29:45,840 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-10-17 10:29:45,841 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-10-17 10:29:45,842 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-10-17 10:29:45,843 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-10-17 10:29:45,844 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-10-17 10:29:45,845 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-10-17 10:29:45,854 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-10-17 10:29:45,856 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-10-17 10:29:45,856 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-10-17 10:29:45,857 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-10-17 10:29:45,858 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-10-17 10:29:45,858 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-10-17 10:29:45,860 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-10-17 10:29:45,861 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-10-17 10:29:45,864 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e9293a0-f2a6-4ff1-bf26-eeb1f299bfa2/bin/uautomizer-J5u9QxTXDZ/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2022-10-17 10:29:45,904 INFO L113 SettingsManager]: Loading preferences was successful [2022-10-17 10:29:45,904 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-10-17 10:29:45,904 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-10-17 10:29:45,904 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-10-17 10:29:45,905 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-10-17 10:29:45,905 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-10-17 10:29:45,906 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-10-17 10:29:45,906 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-10-17 10:29:45,907 INFO L138 SettingsManager]: * Use SBE=true [2022-10-17 10:29:45,907 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-10-17 10:29:45,907 INFO L138 SettingsManager]: * sizeof long=4 [2022-10-17 10:29:45,907 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-10-17 10:29:45,908 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-10-17 10:29:45,908 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-10-17 10:29:45,908 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-10-17 10:29:45,908 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-10-17 10:29:45,908 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-10-17 10:29:45,909 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-10-17 10:29:45,909 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-10-17 10:29:45,909 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-10-17 10:29:45,909 INFO L138 SettingsManager]: * sizeof long double=12 [2022-10-17 10:29:45,909 INFO L138 SettingsManager]: * Use constant arrays=true [2022-10-17 10:29:45,910 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-10-17 10:29:45,910 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-10-17 10:29:45,910 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-10-17 10:29:45,910 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-17 10:29:45,911 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-10-17 10:29:45,911 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-10-17 10:29:45,911 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-10-17 10:29:45,911 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-10-17 10:29:45,912 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_1e9293a0-f2a6-4ff1-bf26-eeb1f299bfa2/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e9293a0-f2a6-4ff1-bf26-eeb1f299bfa2/bin/uautomizer-J5u9QxTXDZ Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b9ba053a0d2bb5cff65ef20f502acdb8ce89a9e82653cf0711701cf2b8f86a02 [2022-10-17 10:29:46,256 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-10-17 10:29:46,283 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-10-17 10:29:46,285 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-10-17 10:29:46,287 INFO L271 PluginConnector]: Initializing CDTParser... [2022-10-17 10:29:46,288 INFO L275 PluginConnector]: CDTParser initialized [2022-10-17 10:29:46,289 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e9293a0-f2a6-4ff1-bf26-eeb1f299bfa2/bin/uautomizer-J5u9QxTXDZ/../../sv-benchmarks/c/ddv-machzwd/ddv_machzwd_outb.i [2022-10-17 10:29:46,360 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e9293a0-f2a6-4ff1-bf26-eeb1f299bfa2/bin/uautomizer-J5u9QxTXDZ/data/5dabbcafd/b8087128ca474da9ad96862f2faba148/FLAGdef30adcc [2022-10-17 10:29:47,271 INFO L306 CDTParser]: Found 1 translation units. [2022-10-17 10:29:47,271 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e9293a0-f2a6-4ff1-bf26-eeb1f299bfa2/sv-benchmarks/c/ddv-machzwd/ddv_machzwd_outb.i [2022-10-17 10:29:47,310 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e9293a0-f2a6-4ff1-bf26-eeb1f299bfa2/bin/uautomizer-J5u9QxTXDZ/data/5dabbcafd/b8087128ca474da9ad96862f2faba148/FLAGdef30adcc [2022-10-17 10:29:47,782 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e9293a0-f2a6-4ff1-bf26-eeb1f299bfa2/bin/uautomizer-J5u9QxTXDZ/data/5dabbcafd/b8087128ca474da9ad96862f2faba148 [2022-10-17 10:29:47,790 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-10-17 10:29:47,792 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-10-17 10:29:47,795 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-10-17 10:29:47,796 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-10-17 10:29:47,801 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-10-17 10:29:47,802 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.10 10:29:47" (1/1) ... [2022-10-17 10:29:47,804 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@211f284b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:29:47, skipping insertion in model container [2022-10-17 10:29:47,804 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.10 10:29:47" (1/1) ... [2022-10-17 10:29:47,817 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-10-17 10:29:47,911 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-10-17 10:29:48,191 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_1e9293a0-f2a6-4ff1-bf26-eeb1f299bfa2/sv-benchmarks/c/ddv-machzwd/ddv_machzwd_outb.i[453,466] [2022-10-17 10:29:49,638 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-17 10:29:49,702 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 10:29:49,703 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@74ed3898 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:29:49, skipping insertion in model container [2022-10-17 10:29:49,703 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-10-17 10:29:49,704 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2022-10-17 10:29:49,706 INFO L158 Benchmark]: Toolchain (without parser) took 1913.31ms. Allocated memory was 90.2MB in the beginning and 109.1MB in the end (delta: 18.9MB). Free memory was 58.8MB in the beginning and 78.2MB in the end (delta: -19.4MB). Peak memory consumption was 27.8MB. Max. memory is 16.1GB. [2022-10-17 10:29:49,707 INFO L158 Benchmark]: CDTParser took 0.24ms. Allocated memory is still 90.2MB. Free memory was 60.4MB in the beginning and 60.4MB in the end (delta: 69.9kB). There was no memory consumed. Max. memory is 16.1GB. [2022-10-17 10:29:49,709 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1909.15ms. Allocated memory was 90.2MB in the beginning and 109.1MB in the end (delta: 18.9MB). Free memory was 58.8MB in the beginning and 78.2MB in the end (delta: -19.4MB). Peak memory consumption was 27.8MB. Max. memory is 16.1GB. [2022-10-17 10:29:49,711 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24ms. Allocated memory is still 90.2MB. Free memory was 60.4MB in the beginning and 60.4MB in the end (delta: 69.9kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 1909.15ms. Allocated memory was 90.2MB in the beginning and 109.1MB in the end (delta: 18.9MB). Free memory was 58.8MB in the beginning and 78.2MB in the end (delta: -19.4MB). Peak memory consumption was 27.8MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 2975]: 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_1e9293a0-f2a6-4ff1-bf26-eeb1f299bfa2/bin/uautomizer-J5u9QxTXDZ/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e9293a0-f2a6-4ff1-bf26-eeb1f299bfa2/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_1e9293a0-f2a6-4ff1-bf26-eeb1f299bfa2/bin/uautomizer-J5u9QxTXDZ/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e9293a0-f2a6-4ff1-bf26-eeb1f299bfa2/bin/uautomizer-J5u9QxTXDZ/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/ddv-machzwd/ddv_machzwd_outb.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e9293a0-f2a6-4ff1-bf26-eeb1f299bfa2/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_1e9293a0-f2a6-4ff1-bf26-eeb1f299bfa2/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 b9ba053a0d2bb5cff65ef20f502acdb8ce89a9e82653cf0711701cf2b8f86a02 --- 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 10:29:52,236 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-10-17 10:29:52,240 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-10-17 10:29:52,298 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-10-17 10:29:52,299 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-10-17 10:29:52,305 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-10-17 10:29:52,308 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-10-17 10:29:52,317 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-10-17 10:29:52,324 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-10-17 10:29:52,331 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-10-17 10:29:52,333 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-10-17 10:29:52,336 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-10-17 10:29:52,336 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-10-17 10:29:52,340 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-10-17 10:29:52,342 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-10-17 10:29:52,344 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-10-17 10:29:52,346 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-10-17 10:29:52,347 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-10-17 10:29:52,350 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-10-17 10:29:52,361 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-10-17 10:29:52,364 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-10-17 10:29:52,366 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-10-17 10:29:52,370 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-10-17 10:29:52,373 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-10-17 10:29:52,384 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-10-17 10:29:52,385 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-10-17 10:29:52,386 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-10-17 10:29:52,388 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-10-17 10:29:52,389 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-10-17 10:29:52,390 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-10-17 10:29:52,391 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-10-17 10:29:52,392 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-10-17 10:29:52,394 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-10-17 10:29:52,395 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-10-17 10:29:52,396 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-10-17 10:29:52,397 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-10-17 10:29:52,398 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-10-17 10:29:52,398 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-10-17 10:29:52,398 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-10-17 10:29:52,401 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-10-17 10:29:52,402 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-10-17 10:29:52,403 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e9293a0-f2a6-4ff1-bf26-eeb1f299bfa2/bin/uautomizer-J5u9QxTXDZ/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2022-10-17 10:29:52,470 INFO L113 SettingsManager]: Loading preferences was successful [2022-10-17 10:29:52,471 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-10-17 10:29:52,471 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-10-17 10:29:52,472 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-10-17 10:29:52,473 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-10-17 10:29:52,473 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-10-17 10:29:52,475 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-10-17 10:29:52,475 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-10-17 10:29:52,476 INFO L138 SettingsManager]: * Use SBE=true [2022-10-17 10:29:52,476 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-10-17 10:29:52,477 INFO L138 SettingsManager]: * sizeof long=4 [2022-10-17 10:29:52,478 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-10-17 10:29:52,478 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-10-17 10:29:52,478 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-10-17 10:29:52,479 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-10-17 10:29:52,479 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-10-17 10:29:52,479 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-10-17 10:29:52,480 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-10-17 10:29:52,480 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-10-17 10:29:52,480 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-10-17 10:29:52,480 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-10-17 10:29:52,481 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-10-17 10:29:52,481 INFO L138 SettingsManager]: * sizeof long double=12 [2022-10-17 10:29:52,481 INFO L138 SettingsManager]: * Use constant arrays=true [2022-10-17 10:29:52,482 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-10-17 10:29:52,482 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-10-17 10:29:52,483 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-10-17 10:29:52,483 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-17 10:29:52,483 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-10-17 10:29:52,484 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-10-17 10:29:52,484 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-10-17 10:29:52,484 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-10-17 10:29:52,485 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-10-17 10:29:52,485 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_1e9293a0-f2a6-4ff1-bf26-eeb1f299bfa2/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e9293a0-f2a6-4ff1-bf26-eeb1f299bfa2/bin/uautomizer-J5u9QxTXDZ Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b9ba053a0d2bb5cff65ef20f502acdb8ce89a9e82653cf0711701cf2b8f86a02 [2022-10-17 10:29:52,919 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-10-17 10:29:52,945 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-10-17 10:29:52,948 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-10-17 10:29:52,949 INFO L271 PluginConnector]: Initializing CDTParser... [2022-10-17 10:29:52,955 INFO L275 PluginConnector]: CDTParser initialized [2022-10-17 10:29:52,957 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e9293a0-f2a6-4ff1-bf26-eeb1f299bfa2/bin/uautomizer-J5u9QxTXDZ/../../sv-benchmarks/c/ddv-machzwd/ddv_machzwd_outb.i [2022-10-17 10:29:53,041 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e9293a0-f2a6-4ff1-bf26-eeb1f299bfa2/bin/uautomizer-J5u9QxTXDZ/data/2bf057fa5/354469825eaa409494b7e9a4dbe2290c/FLAG663947c6f [2022-10-17 10:29:54,016 INFO L306 CDTParser]: Found 1 translation units. [2022-10-17 10:29:54,017 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e9293a0-f2a6-4ff1-bf26-eeb1f299bfa2/sv-benchmarks/c/ddv-machzwd/ddv_machzwd_outb.i [2022-10-17 10:29:54,061 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e9293a0-f2a6-4ff1-bf26-eeb1f299bfa2/bin/uautomizer-J5u9QxTXDZ/data/2bf057fa5/354469825eaa409494b7e9a4dbe2290c/FLAG663947c6f [2022-10-17 10:29:54,525 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e9293a0-f2a6-4ff1-bf26-eeb1f299bfa2/bin/uautomizer-J5u9QxTXDZ/data/2bf057fa5/354469825eaa409494b7e9a4dbe2290c [2022-10-17 10:29:54,529 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-10-17 10:29:54,532 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-10-17 10:29:54,536 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-10-17 10:29:54,537 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-10-17 10:29:54,541 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-10-17 10:29:54,542 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.10 10:29:54" (1/1) ... [2022-10-17 10:29:54,543 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7517de0a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:29:54, skipping insertion in model container [2022-10-17 10:29:54,544 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.10 10:29:54" (1/1) ... [2022-10-17 10:29:54,553 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-10-17 10:29:54,680 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-10-17 10:29:55,036 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_1e9293a0-f2a6-4ff1-bf26-eeb1f299bfa2/sv-benchmarks/c/ddv-machzwd/ddv_machzwd_outb.i[453,466] [2022-10-17 10:29:56,492 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-17 10:29:56,551 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2022-10-17 10:29:56,577 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-10-17 10:29:56,580 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_1e9293a0-f2a6-4ff1-bf26-eeb1f299bfa2/sv-benchmarks/c/ddv-machzwd/ddv_machzwd_outb.i[453,466] [2022-10-17 10:29:56,788 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-17 10:29:56,825 INFO L203 MainTranslator]: Completed pre-run [2022-10-17 10:29:56,839 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_1e9293a0-f2a6-4ff1-bf26-eeb1f299bfa2/sv-benchmarks/c/ddv-machzwd/ddv_machzwd_outb.i[453,466] [2022-10-17 10:29:57,101 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-17 10:29:57,364 INFO L208 MainTranslator]: Completed translation [2022-10-17 10:29:57,365 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:29:57 WrapperNode [2022-10-17 10:29:57,365 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-10-17 10:29:57,366 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-10-17 10:29:57,367 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-10-17 10:29:57,367 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-10-17 10:29:57,376 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:29:57" (1/1) ... [2022-10-17 10:29:57,491 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:29:57" (1/1) ... [2022-10-17 10:29:57,579 INFO L138 Inliner]: procedures = 482, calls = 839, calls flagged for inlining = 54, calls inlined = 38, statements flattened = 981 [2022-10-17 10:29:57,587 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-10-17 10:29:57,588 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-10-17 10:29:57,588 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-10-17 10:29:57,588 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-10-17 10:29:57,600 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:29:57" (1/1) ... [2022-10-17 10:29:57,601 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:29:57" (1/1) ... [2022-10-17 10:29:57,630 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:29:57" (1/1) ... [2022-10-17 10:29:57,631 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:29:57" (1/1) ... [2022-10-17 10:29:57,699 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:29:57" (1/1) ... [2022-10-17 10:29:57,738 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:29:57" (1/1) ... [2022-10-17 10:29:57,765 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:29:57" (1/1) ... [2022-10-17 10:29:57,774 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:29:57" (1/1) ... [2022-10-17 10:29:57,797 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-10-17 10:29:57,798 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-10-17 10:29:57,799 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-10-17 10:29:57,808 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-10-17 10:29:57,809 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:29:57" (1/1) ... [2022-10-17 10:29:57,817 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-17 10:29:57,831 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e9293a0-f2a6-4ff1-bf26-eeb1f299bfa2/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:29:57,849 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e9293a0-f2a6-4ff1-bf26-eeb1f299bfa2/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-10-17 10:29:57,867 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e9293a0-f2a6-4ff1-bf26-eeb1f299bfa2/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-10-17 10:29:57,915 INFO L130 BoogieDeclarations]: Found specification of procedure zf_timer_off [2022-10-17 10:29:57,915 INFO L138 BoogieDeclarations]: Found implementation of procedure zf_timer_off [2022-10-17 10:29:57,915 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~X~C_UINT~X~C_ULONG~TO~C_INT [2022-10-17 10:29:57,916 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~X~C_UINT~X~C_ULONG~TO~C_INT [2022-10-17 10:29:57,916 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-10-17 10:29:57,916 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_atomic_begin [2022-10-17 10:29:57,916 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2022-10-17 10:29:57,916 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2022-10-17 10:29:57,917 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-10-17 10:29:57,917 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE2 [2022-10-17 10:29:57,917 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-10-17 10:29:57,917 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4 [2022-10-17 10:29:57,918 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock [2022-10-17 10:29:57,918 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock [2022-10-17 10:29:57,918 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-10-17 10:29:57,918 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_atomic_end [2022-10-17 10:29:57,918 INFO L130 BoogieDeclarations]: Found specification of procedure zf_get_control [2022-10-17 10:29:57,919 INFO L138 BoogieDeclarations]: Found implementation of procedure zf_get_control [2022-10-17 10:29:57,919 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~C_INT [2022-10-17 10:29:57,919 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~C_INT [2022-10-17 10:29:57,919 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-10-17 10:29:57,920 INFO L130 BoogieDeclarations]: Found specification of procedure request_region [2022-10-17 10:29:57,920 INFO L138 BoogieDeclarations]: Found implementation of procedure request_region [2022-10-17 10:29:57,920 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-10-17 10:29:57,920 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-10-17 10:29:57,920 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2022-10-17 10:29:57,921 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2022-10-17 10:29:57,921 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock_irqsave [2022-10-17 10:29:57,921 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock_irqsave [2022-10-17 10:29:57,921 INFO L130 BoogieDeclarations]: Found specification of procedure release_region [2022-10-17 10:29:57,922 INFO L138 BoogieDeclarations]: Found implementation of procedure release_region [2022-10-17 10:29:57,922 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-10-17 10:29:57,922 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-10-17 10:29:57,923 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock_init [2022-10-17 10:29:57,923 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock_init [2022-10-17 10:29:57,923 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE8 [2022-10-17 10:29:57,923 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2022-10-17 10:29:57,924 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2 [2022-10-17 10:29:57,924 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2022-10-17 10:29:57,924 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-10-17 10:29:57,924 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-10-17 10:29:57,925 INFO L130 BoogieDeclarations]: Found specification of procedure del_timer [2022-10-17 10:29:57,925 INFO L138 BoogieDeclarations]: Found implementation of procedure del_timer [2022-10-17 10:29:57,925 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-10-17 10:29:57,925 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-10-17 10:29:57,926 INFO L130 BoogieDeclarations]: Found specification of procedure add_timer [2022-10-17 10:29:57,926 INFO L138 BoogieDeclarations]: Found implementation of procedure add_timer [2022-10-17 10:29:57,926 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE8 [2022-10-17 10:29:57,927 INFO L130 BoogieDeclarations]: Found specification of procedure cdev_add [2022-10-17 10:29:57,927 INFO L138 BoogieDeclarations]: Found implementation of procedure cdev_add [2022-10-17 10:29:57,929 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2022-10-17 10:29:57,929 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2 [2022-10-17 10:29:57,929 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2022-10-17 10:29:57,930 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-10-17 10:29:57,931 INFO L130 BoogieDeclarations]: Found specification of procedure printk [2022-10-17 10:29:57,931 INFO L138 BoogieDeclarations]: Found implementation of procedure printk [2022-10-17 10:29:57,931 INFO L130 BoogieDeclarations]: Found specification of procedure outw [2022-10-17 10:29:57,932 INFO L138 BoogieDeclarations]: Found implementation of procedure outw [2022-10-17 10:29:57,932 INFO L130 BoogieDeclarations]: Found specification of procedure outb [2022-10-17 10:29:57,933 INFO L138 BoogieDeclarations]: Found implementation of procedure outb [2022-10-17 10:29:57,933 INFO L130 BoogieDeclarations]: Found specification of procedure misc_deregister [2022-10-17 10:29:57,934 INFO L138 BoogieDeclarations]: Found implementation of procedure misc_deregister [2022-10-17 10:29:57,934 INFO L130 BoogieDeclarations]: Found specification of procedure assert_context_process [2022-10-17 10:29:57,934 INFO L138 BoogieDeclarations]: Found implementation of procedure assert_context_process [2022-10-17 10:29:57,935 INFO L130 BoogieDeclarations]: Found specification of procedure zf_set_control [2022-10-17 10:29:57,935 INFO L138 BoogieDeclarations]: Found implementation of procedure zf_set_control [2022-10-17 10:29:57,935 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~X~C_ULONG~X~$Pointer$~TO~C_LONG [2022-10-17 10:29:57,935 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~X~C_ULONG~X~$Pointer$~TO~C_LONG [2022-10-17 10:29:57,936 INFO L130 BoogieDeclarations]: Found specification of procedure zf_readw [2022-10-17 10:29:57,937 INFO L138 BoogieDeclarations]: Found implementation of procedure zf_readw [2022-10-17 10:29:57,937 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE4 [2022-10-17 10:29:57,937 INFO L130 BoogieDeclarations]: Found specification of procedure zf_ping [2022-10-17 10:29:57,937 INFO L138 BoogieDeclarations]: Found implementation of procedure zf_ping [2022-10-17 10:29:57,937 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock [2022-10-17 10:29:57,938 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock [2022-10-17 10:29:57,938 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~C_ULONG~TO~VOID [2022-10-17 10:29:57,938 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~C_ULONG~TO~VOID [2022-10-17 10:29:58,563 INFO L235 CfgBuilder]: Building ICFG [2022-10-17 10:29:58,567 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-10-17 10:30:05,474 INFO L276 CfgBuilder]: Performing block encoding [2022-10-17 10:30:05,505 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-10-17 10:30:05,513 INFO L300 CfgBuilder]: Removed 4 assume(true) statements. [2022-10-17 10:30:05,519 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.10 10:30:05 BoogieIcfgContainer [2022-10-17 10:30:05,519 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-10-17 10:30:05,522 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-10-17 10:30:05,523 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-10-17 10:30:05,526 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-10-17 10:30:05,527 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.10 10:29:54" (1/3) ... [2022-10-17 10:30:05,528 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@20ee7f86 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.10 10:30:05, skipping insertion in model container [2022-10-17 10:30:05,528 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:29:57" (2/3) ... [2022-10-17 10:30:05,529 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@20ee7f86 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.10 10:30:05, skipping insertion in model container [2022-10-17 10:30:05,530 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.10 10:30:05" (3/3) ... [2022-10-17 10:30:05,532 INFO L112 eAbstractionObserver]: Analyzing ICFG ddv_machzwd_outb.i [2022-10-17 10:30:05,556 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-10-17 10:30:05,556 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 206 error locations. [2022-10-17 10:30:05,652 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-10-17 10:30:05,662 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;@51495c4c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-10-17 10:30:05,662 INFO L358 AbstractCegarLoop]: Starting to check reachability of 206 error locations. [2022-10-17 10:30:05,673 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 10:30:05,682 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-10-17 10:30:05,682 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:30:05,683 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-10-17 10:30:05,684 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 10:30:05,690 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:30:05,690 INFO L85 PathProgramCache]: Analyzing trace with hash 346313650, now seen corresponding path program 1 times [2022-10-17 10:30:05,709 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-10-17 10:30:05,710 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1025773947] [2022-10-17 10:30:05,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:30:05,711 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-10-17 10:30:05,711 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e9293a0-f2a6-4ff1-bf26-eeb1f299bfa2/bin/uautomizer-J5u9QxTXDZ/mathsat [2022-10-17 10:30:05,715 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e9293a0-f2a6-4ff1-bf26-eeb1f299bfa2/bin/uautomizer-J5u9QxTXDZ/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-10-17 10:30:05,725 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e9293a0-f2a6-4ff1-bf26-eeb1f299bfa2/bin/uautomizer-J5u9QxTXDZ/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-10-17 10:30:06,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:30:06,357 INFO L263 TraceCheckSpWp]: Trace formula consists of 472 conjuncts, 5 conjunts are in the unsatisfiable core [2022-10-17 10:30:06,363 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 10:30:06,551 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 10:30:06,551 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-17 10:30:06,552 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-10-17 10:30:06,552 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1025773947] [2022-10-17 10:30:06,553 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1025773947] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:30:06,553 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:30:06,553 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-10-17 10:30:06,555 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1040346947] [2022-10-17 10:30:06,556 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:30:06,561 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-10-17 10:30:06,561 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-10-17 10:30:06,594 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-10-17 10:30:06,595 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-10-17 10:30:06,599 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 10:30:08,668 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-10-17 10:30:10,678 WARN L539 Checker$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 10:30:15,002 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:30:15,002 INFO L93 Difference]: Finished difference Result 1214 states and 1453 transitions. [2022-10-17 10:30:15,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-10-17 10:30:15,006 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 10:30:15,007 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:30:15,033 INFO L225 Difference]: With dead ends: 1214 [2022-10-17 10:30:15,033 INFO L226 Difference]: Without dead ends: 1210 [2022-10-17 10:30:15,035 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 10:30:15,040 INFO L413 NwaCegarLoop]: 746 mSDtfsCounter, 692 mSDsluCounter, 1700 mSDsCounter, 0 mSdLazyCounter, 1110 mSolverCounterSat, 4 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 693 SdHoareTripleChecker+Valid, 2446 SdHoareTripleChecker+Invalid, 1116 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 1110 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.2s IncrementalHoareTripleChecker+Time [2022-10-17 10:30:15,041 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [693 Valid, 2446 Invalid, 1116 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 1110 Invalid, 2 Unknown, 0 Unchecked, 8.2s Time] [2022-10-17 10:30:15,068 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1210 states. [2022-10-17 10:30:15,175 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1210 to 995. [2022-10-17 10:30:15,180 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 10:30:15,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 995 states to 995 states and 1356 transitions. [2022-10-17 10:30:15,198 INFO L78 Accepts]: Start accepts. Automaton has 995 states and 1356 transitions. Word has length 5 [2022-10-17 10:30:15,199 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:30:15,200 INFO L495 AbstractCegarLoop]: Abstraction has 995 states and 1356 transitions. [2022-10-17 10:30:15,204 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 10:30:15,205 INFO L276 IsEmpty]: Start isEmpty. Operand 995 states and 1356 transitions. [2022-10-17 10:30:15,205 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-10-17 10:30:15,206 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:30:15,206 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-10-17 10:30:15,239 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e9293a0-f2a6-4ff1-bf26-eeb1f299bfa2/bin/uautomizer-J5u9QxTXDZ/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2022-10-17 10:30:15,421 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e9293a0-f2a6-4ff1-bf26-eeb1f299bfa2/bin/uautomizer-J5u9QxTXDZ/mathsat -unsat_core_generation=3 [2022-10-17 10:30:15,421 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 10:30:15,422 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:30:15,422 INFO L85 PathProgramCache]: Analyzing trace with hash 346313651, now seen corresponding path program 1 times [2022-10-17 10:30:15,422 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-10-17 10:30:15,423 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [498060238] [2022-10-17 10:30:15,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:30:15,423 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-10-17 10:30:15,423 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e9293a0-f2a6-4ff1-bf26-eeb1f299bfa2/bin/uautomizer-J5u9QxTXDZ/mathsat [2022-10-17 10:30:15,427 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e9293a0-f2a6-4ff1-bf26-eeb1f299bfa2/bin/uautomizer-J5u9QxTXDZ/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-10-17 10:30:15,443 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e9293a0-f2a6-4ff1-bf26-eeb1f299bfa2/bin/uautomizer-J5u9QxTXDZ/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2022-10-17 10:30:15,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:30:15,992 INFO L263 TraceCheckSpWp]: Trace formula consists of 472 conjuncts, 8 conjunts are in the unsatisfiable core [2022-10-17 10:30:15,994 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 10:30:16,148 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 10:30:16,148 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-17 10:30:16,149 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-10-17 10:30:16,149 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [498060238] [2022-10-17 10:30:16,149 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [498060238] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:30:16,149 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:30:16,149 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-10-17 10:30:16,150 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [449309114] [2022-10-17 10:30:16,150 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:30:16,151 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-10-17 10:30:16,152 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-10-17 10:30:16,152 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-10-17 10:30:16,152 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-10-17 10:30:16,153 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)