./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/weaver/parallel-parallel-sum-2.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version e04fb08f Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f306c3c4-53cd-4830-aebe-2f9be830f203/bin/uautomizer-tPACEb0tL8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f306c3c4-53cd-4830-aebe-2f9be830f203/bin/uautomizer-tPACEb0tL8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f306c3c4-53cd-4830-aebe-2f9be830f203/bin/uautomizer-tPACEb0tL8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f306c3c4-53cd-4830-aebe-2f9be830f203/bin/uautomizer-tPACEb0tL8/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/weaver/parallel-parallel-sum-2.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f306c3c4-53cd-4830-aebe-2f9be830f203/bin/uautomizer-tPACEb0tL8/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f306c3c4-53cd-4830-aebe-2f9be830f203/bin/uautomizer-tPACEb0tL8 --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 c0b350b5c7953744a22c8334b20c4dc8efdff09f1ecb36de8b1744d1e20f0260 --- 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-e04fb08 [2022-11-16 11:37:25,012 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-16 11:37:25,014 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-16 11:37:25,039 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-16 11:37:25,042 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-16 11:37:25,046 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-16 11:37:25,049 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-16 11:37:25,053 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-16 11:37:25,056 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-16 11:37:25,062 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-16 11:37:25,063 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-16 11:37:25,065 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-16 11:37:25,066 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-16 11:37:25,069 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-16 11:37:25,071 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-16 11:37:25,074 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-16 11:37:25,076 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-16 11:37:25,077 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-16 11:37:25,079 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-16 11:37:25,088 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-16 11:37:25,090 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-16 11:37:25,092 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-16 11:37:25,095 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-16 11:37:25,096 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-16 11:37:25,104 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-16 11:37:25,104 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-16 11:37:25,105 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-16 11:37:25,107 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-16 11:37:25,107 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-16 11:37:25,108 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-16 11:37:25,109 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-16 11:37:25,110 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-16 11:37:25,112 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-16 11:37:25,113 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-16 11:37:25,114 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-16 11:37:25,115 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-16 11:37:25,115 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-16 11:37:25,116 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-16 11:37:25,116 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-16 11:37:25,117 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-16 11:37:25,117 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-16 11:37:25,118 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f306c3c4-53cd-4830-aebe-2f9be830f203/bin/uautomizer-tPACEb0tL8/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2022-11-16 11:37:25,152 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-16 11:37:25,156 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-16 11:37:25,157 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-16 11:37:25,157 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-16 11:37:25,158 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-16 11:37:25,158 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-16 11:37:25,159 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-16 11:37:25,159 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-16 11:37:25,159 INFO L138 SettingsManager]: * Use SBE=true [2022-11-16 11:37:25,160 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-16 11:37:25,161 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-16 11:37:25,161 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-16 11:37:25,161 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-16 11:37:25,162 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-16 11:37:25,162 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-16 11:37:25,162 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-11-16 11:37:25,162 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-11-16 11:37:25,162 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-11-16 11:37:25,163 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-16 11:37:25,163 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-16 11:37:25,163 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-16 11:37:25,163 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-16 11:37:25,163 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-16 11:37:25,164 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-16 11:37:25,164 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-16 11:37:25,164 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 11:37:25,164 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-16 11:37:25,164 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-16 11:37:25,165 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-16 11:37:25,165 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-16 11:37:25,165 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_f306c3c4-53cd-4830-aebe-2f9be830f203/bin/uautomizer-tPACEb0tL8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f306c3c4-53cd-4830-aebe-2f9be830f203/bin/uautomizer-tPACEb0tL8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c0b350b5c7953744a22c8334b20c4dc8efdff09f1ecb36de8b1744d1e20f0260 [2022-11-16 11:37:25,408 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-16 11:37:25,450 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-16 11:37:25,452 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-16 11:37:25,453 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-16 11:37:25,454 INFO L275 PluginConnector]: CDTParser initialized [2022-11-16 11:37:25,456 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f306c3c4-53cd-4830-aebe-2f9be830f203/bin/uautomizer-tPACEb0tL8/../../sv-benchmarks/c/weaver/parallel-parallel-sum-2.wvr.c [2022-11-16 11:37:25,534 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f306c3c4-53cd-4830-aebe-2f9be830f203/bin/uautomizer-tPACEb0tL8/data/f107e8ea3/c6bc801b344941ba914d13e95afa5e24/FLAG1ce5746f7 [2022-11-16 11:37:25,973 INFO L306 CDTParser]: Found 1 translation units. [2022-11-16 11:37:25,973 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f306c3c4-53cd-4830-aebe-2f9be830f203/sv-benchmarks/c/weaver/parallel-parallel-sum-2.wvr.c [2022-11-16 11:37:25,984 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f306c3c4-53cd-4830-aebe-2f9be830f203/bin/uautomizer-tPACEb0tL8/data/f107e8ea3/c6bc801b344941ba914d13e95afa5e24/FLAG1ce5746f7 [2022-11-16 11:37:26,351 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f306c3c4-53cd-4830-aebe-2f9be830f203/bin/uautomizer-tPACEb0tL8/data/f107e8ea3/c6bc801b344941ba914d13e95afa5e24 [2022-11-16 11:37:26,355 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-16 11:37:26,358 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-16 11:37:26,363 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-16 11:37:26,363 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-16 11:37:26,367 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-16 11:37:26,367 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 11:37:26" (1/1) ... [2022-11-16 11:37:26,369 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@494a83a0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:37:26, skipping insertion in model container [2022-11-16 11:37:26,370 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 11:37:26" (1/1) ... [2022-11-16 11:37:26,377 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-16 11:37:26,414 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-16 11:37:26,724 WARN L229 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_f306c3c4-53cd-4830-aebe-2f9be830f203/sv-benchmarks/c/weaver/parallel-parallel-sum-2.wvr.c[4225,4238] [2022-11-16 11:37:26,740 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 11:37:26,762 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) [2022-11-16 11:37:26,764 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@3fde29d8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:37:26, skipping insertion in model container [2022-11-16 11:37:26,764 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-16 11:37:26,765 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2022-11-16 11:37:26,767 INFO L158 Benchmark]: Toolchain (without parser) took 407.84ms. Allocated memory is still 138.4MB. Free memory was 104.0MB in the beginning and 113.6MB in the end (delta: -9.6MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-11-16 11:37:26,769 INFO L158 Benchmark]: CDTParser took 0.18ms. Allocated memory is still 92.3MB. Free memory was 68.1MB in the beginning and 68.1MB in the end (delta: 28.9kB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-16 11:37:26,770 INFO L158 Benchmark]: CACSL2BoogieTranslator took 401.76ms. Allocated memory is still 138.4MB. Free memory was 103.7MB in the beginning and 113.6MB in the end (delta: -9.9MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-11-16 11:37:26,772 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18ms. Allocated memory is still 92.3MB. Free memory was 68.1MB in the beginning and 68.1MB in the end (delta: 28.9kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 401.76ms. Allocated memory is still 138.4MB. Free memory was 103.7MB in the beginning and 113.6MB in the end (delta: -9.9MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 175]: Unsupported Syntax Found a cast between two array/pointer types of different sizes while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f306c3c4-53cd-4830-aebe-2f9be830f203/bin/uautomizer-tPACEb0tL8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f306c3c4-53cd-4830-aebe-2f9be830f203/bin/uautomizer-tPACEb0tL8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f306c3c4-53cd-4830-aebe-2f9be830f203/bin/uautomizer-tPACEb0tL8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f306c3c4-53cd-4830-aebe-2f9be830f203/bin/uautomizer-tPACEb0tL8/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/weaver/parallel-parallel-sum-2.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f306c3c4-53cd-4830-aebe-2f9be830f203/bin/uautomizer-tPACEb0tL8/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f306c3c4-53cd-4830-aebe-2f9be830f203/bin/uautomizer-tPACEb0tL8 --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 c0b350b5c7953744a22c8334b20c4dc8efdff09f1ecb36de8b1744d1e20f0260 --- 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-e04fb08 [2022-11-16 11:37:28,890 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-16 11:37:28,892 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-16 11:37:28,922 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-16 11:37:28,923 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-16 11:37:28,926 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-16 11:37:28,929 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-16 11:37:28,935 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-16 11:37:28,938 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-16 11:37:28,943 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-16 11:37:28,944 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-16 11:37:28,947 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-16 11:37:28,947 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-16 11:37:28,950 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-16 11:37:28,951 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-16 11:37:28,953 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-16 11:37:28,955 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-16 11:37:28,956 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-16 11:37:28,961 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-16 11:37:28,968 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-16 11:37:28,970 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-16 11:37:28,972 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-16 11:37:28,974 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-16 11:37:28,976 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-16 11:37:28,985 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-16 11:37:28,985 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-16 11:37:28,985 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-16 11:37:28,986 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-16 11:37:28,987 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-16 11:37:28,988 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-16 11:37:28,988 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-16 11:37:28,989 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-16 11:37:28,990 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-16 11:37:28,991 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-16 11:37:28,992 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-16 11:37:28,992 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-16 11:37:28,993 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-16 11:37:28,993 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-16 11:37:28,994 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-16 11:37:28,998 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-16 11:37:29,000 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-16 11:37:29,005 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f306c3c4-53cd-4830-aebe-2f9be830f203/bin/uautomizer-tPACEb0tL8/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2022-11-16 11:37:29,042 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-16 11:37:29,043 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-16 11:37:29,043 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-16 11:37:29,043 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-16 11:37:29,044 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-16 11:37:29,044 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-16 11:37:29,045 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-16 11:37:29,045 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-16 11:37:29,045 INFO L138 SettingsManager]: * Use SBE=true [2022-11-16 11:37:29,045 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-16 11:37:29,045 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-16 11:37:29,046 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-16 11:37:29,046 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-16 11:37:29,046 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-16 11:37:29,046 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-16 11:37:29,046 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-11-16 11:37:29,046 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-11-16 11:37:29,047 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-11-16 11:37:29,047 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-16 11:37:29,047 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-16 11:37:29,047 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-11-16 11:37:29,047 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-11-16 11:37:29,048 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-16 11:37:29,048 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-16 11:37:29,048 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-16 11:37:29,048 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-16 11:37:29,048 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-16 11:37:29,048 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 11:37:29,049 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-16 11:37:29,049 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-16 11:37:29,049 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-11-16 11:37:29,049 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-11-16 11:37:29,049 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-16 11:37:29,050 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_f306c3c4-53cd-4830-aebe-2f9be830f203/bin/uautomizer-tPACEb0tL8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f306c3c4-53cd-4830-aebe-2f9be830f203/bin/uautomizer-tPACEb0tL8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c0b350b5c7953744a22c8334b20c4dc8efdff09f1ecb36de8b1744d1e20f0260 [2022-11-16 11:37:29,485 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-16 11:37:29,516 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-16 11:37:29,519 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-16 11:37:29,520 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-16 11:37:29,523 INFO L275 PluginConnector]: CDTParser initialized [2022-11-16 11:37:29,525 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f306c3c4-53cd-4830-aebe-2f9be830f203/bin/uautomizer-tPACEb0tL8/../../sv-benchmarks/c/weaver/parallel-parallel-sum-2.wvr.c [2022-11-16 11:37:29,586 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f306c3c4-53cd-4830-aebe-2f9be830f203/bin/uautomizer-tPACEb0tL8/data/4ea5b57e6/cb42682ce30f44d18a506d128c4f0516/FLAGd843da6b2 [2022-11-16 11:37:30,073 INFO L306 CDTParser]: Found 1 translation units. [2022-11-16 11:37:30,073 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f306c3c4-53cd-4830-aebe-2f9be830f203/sv-benchmarks/c/weaver/parallel-parallel-sum-2.wvr.c [2022-11-16 11:37:30,081 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f306c3c4-53cd-4830-aebe-2f9be830f203/bin/uautomizer-tPACEb0tL8/data/4ea5b57e6/cb42682ce30f44d18a506d128c4f0516/FLAGd843da6b2 [2022-11-16 11:37:30,449 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f306c3c4-53cd-4830-aebe-2f9be830f203/bin/uautomizer-tPACEb0tL8/data/4ea5b57e6/cb42682ce30f44d18a506d128c4f0516 [2022-11-16 11:37:30,453 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-16 11:37:30,455 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-16 11:37:30,460 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-16 11:37:30,460 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-16 11:37:30,464 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-16 11:37:30,465 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 11:37:30" (1/1) ... [2022-11-16 11:37:30,467 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2e330e50 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:37:30, skipping insertion in model container [2022-11-16 11:37:30,467 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 11:37:30" (1/1) ... [2022-11-16 11:37:30,475 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-16 11:37:30,513 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-16 11:37:30,796 WARN L229 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_f306c3c4-53cd-4830-aebe-2f9be830f203/sv-benchmarks/c/weaver/parallel-parallel-sum-2.wvr.c[4225,4238] [2022-11-16 11:37:30,821 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 11:37:30,845 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2022-11-16 11:37:30,849 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-16 11:37:30,868 WARN L229 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_f306c3c4-53cd-4830-aebe-2f9be830f203/sv-benchmarks/c/weaver/parallel-parallel-sum-2.wvr.c[4225,4238] [2022-11-16 11:37:30,873 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 11:37:30,878 INFO L203 MainTranslator]: Completed pre-run [2022-11-16 11:37:30,907 WARN L229 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_f306c3c4-53cd-4830-aebe-2f9be830f203/sv-benchmarks/c/weaver/parallel-parallel-sum-2.wvr.c[4225,4238] [2022-11-16 11:37:30,911 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 11:37:30,928 INFO L208 MainTranslator]: Completed translation [2022-11-16 11:37:30,929 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:37:30 WrapperNode [2022-11-16 11:37:30,929 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-16 11:37:30,930 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-16 11:37:30,930 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-16 11:37:30,930 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-16 11:37:30,936 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:37:30" (1/1) ... [2022-11-16 11:37:30,948 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:37:30" (1/1) ... [2022-11-16 11:37:30,992 INFO L138 Inliner]: procedures = 31, calls = 88, calls flagged for inlining = 22, calls inlined = 32, statements flattened = 367 [2022-11-16 11:37:30,995 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-16 11:37:30,997 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-16 11:37:30,998 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-16 11:37:30,998 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-16 11:37:31,008 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:37:30" (1/1) ... [2022-11-16 11:37:31,008 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:37:30" (1/1) ... [2022-11-16 11:37:31,033 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:37:30" (1/1) ... [2022-11-16 11:37:31,033 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:37:30" (1/1) ... [2022-11-16 11:37:31,061 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:37:30" (1/1) ... [2022-11-16 11:37:31,067 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:37:30" (1/1) ... [2022-11-16 11:37:31,069 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:37:30" (1/1) ... [2022-11-16 11:37:31,071 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:37:30" (1/1) ... [2022-11-16 11:37:31,089 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-16 11:37:31,090 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-16 11:37:31,090 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-16 11:37:31,090 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-16 11:37:31,091 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:37:30" (1/1) ... [2022-11-16 11:37:31,097 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 11:37:31,107 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f306c3c4-53cd-4830-aebe-2f9be830f203/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:37:31,117 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f306c3c4-53cd-4830-aebe-2f9be830f203/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-16 11:37:31,129 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f306c3c4-53cd-4830-aebe-2f9be830f203/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-16 11:37:31,155 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-16 11:37:31,155 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-11-16 11:37:31,155 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-16 11:37:31,155 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2022-11-16 11:37:31,155 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-11-16 11:37:31,156 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-11-16 11:37:31,156 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-11-16 11:37:31,156 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-11-16 11:37:31,156 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-11-16 11:37:31,156 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-11-16 11:37:31,156 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2022-11-16 11:37:31,157 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2022-11-16 11:37:31,157 INFO L130 BoogieDeclarations]: Found specification of procedure thread5 [2022-11-16 11:37:31,157 INFO L138 BoogieDeclarations]: Found implementation of procedure thread5 [2022-11-16 11:37:31,157 INFO L130 BoogieDeclarations]: Found specification of procedure thread6 [2022-11-16 11:37:31,157 INFO L138 BoogieDeclarations]: Found implementation of procedure thread6 [2022-11-16 11:37:31,158 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-11-16 11:37:31,158 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-11-16 11:37:31,158 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-16 11:37:31,158 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-16 11:37:31,158 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-16 11:37:31,158 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-16 11:37:31,159 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2022-11-16 11:37:31,160 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-16 11:37:31,319 INFO L235 CfgBuilder]: Building ICFG [2022-11-16 11:37:31,327 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-16 11:37:32,345 INFO L276 CfgBuilder]: Performing block encoding [2022-11-16 11:37:32,620 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-16 11:37:32,620 INFO L300 CfgBuilder]: Removed 5 assume(true) statements. [2022-11-16 11:37:32,624 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 11:37:32 BoogieIcfgContainer [2022-11-16 11:37:32,624 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-16 11:37:32,627 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-16 11:37:32,627 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-16 11:37:32,630 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-16 11:37:32,631 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 11:37:30" (1/3) ... [2022-11-16 11:37:32,632 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4d9cc44d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 11:37:32, skipping insertion in model container [2022-11-16 11:37:32,632 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:37:30" (2/3) ... [2022-11-16 11:37:32,632 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4d9cc44d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 11:37:32, skipping insertion in model container [2022-11-16 11:37:32,634 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 11:37:32" (3/3) ... [2022-11-16 11:37:32,638 INFO L112 eAbstractionObserver]: Analyzing ICFG parallel-parallel-sum-2.wvr.c [2022-11-16 11:37:32,659 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-16 11:37:32,660 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 36 error locations. [2022-11-16 11:37:32,660 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-16 11:37:32,855 INFO L144 ThreadInstanceAdder]: Constructed 18 joinOtherThreadTransitions. [2022-11-16 11:37:32,906 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-16 11:37:32,925 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 336 places, 340 transitions, 752 flow [2022-11-16 11:37:32,930 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 336 places, 340 transitions, 752 flow [2022-11-16 11:37:32,932 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 336 places, 340 transitions, 752 flow [2022-11-16 11:37:33,124 INFO L130 PetriNetUnfolder]: 21/290 cut-off events. [2022-11-16 11:37:33,124 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2022-11-16 11:37:33,136 INFO L83 FinitePrefix]: Finished finitePrefix Result has 319 conditions, 290 events. 21/290 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 459 event pairs, 0 based on Foata normal form. 0/233 useless extension candidates. Maximal degree in co-relation 241. Up to 3 conditions per place. [2022-11-16 11:37:33,147 INFO L119 LiptonReduction]: Number of co-enabled transitions 13600 [2022-11-16 11:38:18,765 INFO L134 LiptonReduction]: Checked pairs total: 58215 [2022-11-16 11:38:18,765 INFO L136 LiptonReduction]: Total number of compositions: 310 [2022-11-16 11:38:18,774 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 127 places, 117 transitions, 306 flow [2022-11-16 11:38:22,350 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 58810 states, 53598 states have (on average 5.914045300197769) internal successors, (316981), 58809 states have internal predecessors, (316981), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:38:22,408 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-16 11:38:22,419 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;@678cdefa, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-16 11:38:22,419 INFO L358 AbstractCegarLoop]: Starting to check reachability of 70 error locations. [2022-11-16 11:38:22,598 INFO L276 IsEmpty]: Start isEmpty. Operand has 58810 states, 53598 states have (on average 5.914045300197769) internal successors, (316981), 58809 states have internal predecessors, (316981), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:38:22,606 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2022-11-16 11:38:22,607 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:38:22,608 INFO L195 NwaCegarLoop]: trace histogram [1, 1] [2022-11-16 11:38:22,612 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 67 more)] === [2022-11-16 11:38:22,622 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:38:22,624 INFO L85 PathProgramCache]: Analyzing trace with hash 52636, now seen corresponding path program 1 times [2022-11-16 11:38:22,642 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 11:38:22,647 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [643114373] [2022-11-16 11:38:22,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:38:22,649 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 11:38:22,649 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f306c3c4-53cd-4830-aebe-2f9be830f203/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 11:38:22,655 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f306c3c4-53cd-4830-aebe-2f9be830f203/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 11:38:22,702 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f306c3c4-53cd-4830-aebe-2f9be830f203/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-11-16 11:38:22,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:38:22,866 INFO L263 TraceCheckSpWp]: Trace formula consists of 53 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-16 11:38:22,872 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:38:23,204 INFO L321 Elim1Store]: treesize reduction 46, result has 29.2 percent of original size [2022-11-16 11:38:23,205 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 3 case distinctions, treesize of input 22 treesize of output 33 [2022-11-16 11:38:23,302 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:38:23,302 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 11:38:23,303 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 11:38:23,303 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [643114373] [2022-11-16 11:38:23,303 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [643114373] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:38:23,304 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:38:23,304 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-16 11:38:23,305 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [491655540] [2022-11-16 11:38:23,306 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:38:23,310 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 11:38:23,310 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 11:38:23,348 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 11:38:23,349 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:38:23,472 INFO L87 Difference]: Start difference. First operand has 58810 states, 53598 states have (on average 5.914045300197769) internal successors, (316981), 58809 states have internal predecessors, (316981), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:38:25,642 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:38:25,643 INFO L93 Difference]: Finished difference Result 45842 states and 239941 transitions. [2022-11-16 11:38:25,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 11:38:25,646 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 2 [2022-11-16 11:38:25,646 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:38:26,330 INFO L225 Difference]: With dead ends: 45842 [2022-11-16 11:38:26,330 INFO L226 Difference]: Without dead ends: 45842 [2022-11-16 11:38:26,331 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:38:26,335 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 84 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 154 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 84 SdHoareTripleChecker+Valid, 36 SdHoareTripleChecker+Invalid, 160 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 154 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-16 11:38:26,336 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [84 Valid, 36 Invalid, 160 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 154 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-16 11:38:26,696 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45842 states. [2022-11-16 11:38:28,752 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45842 to 44884. [2022-11-16 11:38:28,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44884 states, 41274 states have (on average 5.741507971119833) internal successors, (236975), 44883 states have internal predecessors, (236975), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:38:29,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44884 states to 44884 states and 236975 transitions. [2022-11-16 11:38:29,701 INFO L78 Accepts]: Start accepts. Automaton has 44884 states and 236975 transitions. Word has length 2 [2022-11-16 11:38:29,702 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:38:29,702 INFO L495 AbstractCegarLoop]: Abstraction has 44884 states and 236975 transitions. [2022-11-16 11:38:29,702 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:38:29,718 INFO L276 IsEmpty]: Start isEmpty. Operand 44884 states and 236975 transitions. [2022-11-16 11:38:29,719 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2022-11-16 11:38:29,719 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:38:29,719 INFO L195 NwaCegarLoop]: trace histogram [1, 1] [2022-11-16 11:38:29,735 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f306c3c4-53cd-4830-aebe-2f9be830f203/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2022-11-16 11:38:29,920 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f306c3c4-53cd-4830-aebe-2f9be830f203/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 11:38:29,921 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 67 more)] === [2022-11-16 11:38:29,921 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:38:29,921 INFO L85 PathProgramCache]: Analyzing trace with hash 52637, now seen corresponding path program 1 times [2022-11-16 11:38:29,922 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 11:38:29,922 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [358867317] [2022-11-16 11:38:29,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:38:29,922 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 11:38:29,922 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f306c3c4-53cd-4830-aebe-2f9be830f203/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 11:38:29,924 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f306c3c4-53cd-4830-aebe-2f9be830f203/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 11:38:29,973 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f306c3c4-53cd-4830-aebe-2f9be830f203/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2022-11-16 11:38:30,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:38:30,051 INFO L263 TraceCheckSpWp]: Trace formula consists of 53 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-16 11:38:30,053 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:38:30,078 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:38:30,085 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:38:30,117 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-16 11:38:30,118 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 20 [2022-11-16 11:38:30,136 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2022-11-16 11:38:30,181 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:38:30,182 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 11:38:30,182 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 11:38:30,182 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [358867317] [2022-11-16 11:38:30,182 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [358867317] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:38:30,183 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:38:30,183 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-16 11:38:30,183 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [219666264] [2022-11-16 11:38:30,183 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:38:30,184 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 11:38:30,184 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 11:38:30,185 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 11:38:30,185 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:38:30,185 INFO L87 Difference]: Start difference. First operand 44884 states and 236975 transitions. Second operand has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:38:30,956 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:38:30,956 INFO L93 Difference]: Finished difference Result 44885 states and 236979 transitions. [2022-11-16 11:38:30,957 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 11:38:30,957 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 2 [2022-11-16 11:38:30,957 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:38:32,014 INFO L225 Difference]: With dead ends: 44885 [2022-11-16 11:38:32,014 INFO L226 Difference]: Without dead ends: 44885 [2022-11-16 11:38:32,015 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:38:32,021 INFO L413 NwaCegarLoop]: 36 mSDtfsCounter, 0 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 54 SdHoareTripleChecker+Invalid, 129 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 54 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 75 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-16 11:38:32,022 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 54 Invalid, 129 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 54 Invalid, 0 Unknown, 75 Unchecked, 0.3s Time] [2022-11-16 11:38:32,161 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44885 states. [2022-11-16 11:38:34,286 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44885 to 44885. [2022-11-16 11:38:34,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44885 states, 41275 states have (on average 5.741465778316172) internal successors, (236979), 44884 states have internal predecessors, (236979), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:38:34,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44885 states to 44885 states and 236979 transitions. [2022-11-16 11:38:34,754 INFO L78 Accepts]: Start accepts. Automaton has 44885 states and 236979 transitions. Word has length 2 [2022-11-16 11:38:34,754 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:38:34,754 INFO L495 AbstractCegarLoop]: Abstraction has 44885 states and 236979 transitions. [2022-11-16 11:38:34,755 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:38:34,755 INFO L276 IsEmpty]: Start isEmpty. Operand 44885 states and 236979 transitions. [2022-11-16 11:38:34,755 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2022-11-16 11:38:34,755 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:38:34,755 INFO L195 NwaCegarLoop]: trace histogram [1, 1] [2022-11-16 11:38:34,763 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f306c3c4-53cd-4830-aebe-2f9be830f203/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2022-11-16 11:38:34,956 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f306c3c4-53cd-4830-aebe-2f9be830f203/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 11:38:34,956 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 67 more)] === [2022-11-16 11:38:34,957 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:38:34,957 INFO L85 PathProgramCache]: Analyzing trace with hash 52414, now seen corresponding path program 1 times [2022-11-16 11:38:34,958 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 11:38:34,958 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [166972756] [2022-11-16 11:38:34,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:38:34,959 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 11:38:34,960 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f306c3c4-53cd-4830-aebe-2f9be830f203/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 11:38:34,961 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f306c3c4-53cd-4830-aebe-2f9be830f203/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 11:38:34,967 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f306c3c4-53cd-4830-aebe-2f9be830f203/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2022-11-16 11:38:35,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:38:35,066 INFO L263 TraceCheckSpWp]: Trace formula consists of 44 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-16 11:38:35,067 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:38:35,126 INFO L321 Elim1Store]: treesize reduction 39, result has 40.0 percent of original size [2022-11-16 11:38:35,127 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 12 treesize of output 33 [2022-11-16 11:38:35,142 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:38:35,143 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 11:38:35,143 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 11:38:35,143 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [166972756] [2022-11-16 11:38:35,143 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [166972756] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:38:35,143 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:38:35,144 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-16 11:38:35,144 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1781006063] [2022-11-16 11:38:35,144 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:38:35,144 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 11:38:35,144 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 11:38:35,145 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 11:38:35,145 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:38:35,145 INFO L87 Difference]: Start difference. First operand 44885 states and 236979 transitions. Second operand has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:38:37,031 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:38:37,031 INFO L93 Difference]: Finished difference Result 44884 states and 236977 transitions. [2022-11-16 11:38:37,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 11:38:37,032 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 2 [2022-11-16 11:38:37,032 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:38:37,559 INFO L225 Difference]: With dead ends: 44884 [2022-11-16 11:38:37,559 INFO L226 Difference]: Without dead ends: 44884 [2022-11-16 11:38:37,559 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:38:37,560 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 77 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 144 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 77 SdHoareTripleChecker+Valid, 36 SdHoareTripleChecker+Invalid, 148 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 144 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-16 11:38:37,561 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [77 Valid, 36 Invalid, 148 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 144 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-16 11:38:37,689 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44884 states. [2022-11-16 11:38:39,551 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44884 to 44884. [2022-11-16 11:38:39,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44884 states, 41275 states have (on average 5.7414173228346455) internal successors, (236977), 44883 states have internal predecessors, (236977), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:38:40,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44884 states to 44884 states and 236977 transitions. [2022-11-16 11:38:40,438 INFO L78 Accepts]: Start accepts. Automaton has 44884 states and 236977 transitions. Word has length 2 [2022-11-16 11:38:40,440 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:38:40,440 INFO L495 AbstractCegarLoop]: Abstraction has 44884 states and 236977 transitions. [2022-11-16 11:38:40,440 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:38:40,440 INFO L276 IsEmpty]: Start isEmpty. Operand 44884 states and 236977 transitions. [2022-11-16 11:38:40,441 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2022-11-16 11:38:40,441 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:38:40,454 INFO L195 NwaCegarLoop]: trace histogram [1, 1] [2022-11-16 11:38:40,466 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f306c3c4-53cd-4830-aebe-2f9be830f203/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2022-11-16 11:38:40,655 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f306c3c4-53cd-4830-aebe-2f9be830f203/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 11:38:40,655 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 67 more)] === [2022-11-16 11:38:40,655 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:38:40,655 INFO L85 PathProgramCache]: Analyzing trace with hash 52415, now seen corresponding path program 1 times [2022-11-16 11:38:40,656 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 11:38:40,656 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1603930362] [2022-11-16 11:38:40,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:38:40,656 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 11:38:40,656 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f306c3c4-53cd-4830-aebe-2f9be830f203/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 11:38:40,657 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f306c3c4-53cd-4830-aebe-2f9be830f203/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 11:38:40,659 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f306c3c4-53cd-4830-aebe-2f9be830f203/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2022-11-16 11:38:40,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:38:40,743 INFO L263 TraceCheckSpWp]: Trace formula consists of 44 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-16 11:38:40,745 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:38:40,828 INFO L321 Elim1Store]: treesize reduction 37, result has 37.3 percent of original size [2022-11-16 11:38:40,829 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 14 treesize of output 29 [2022-11-16 11:38:40,860 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:38:40,860 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 11:38:40,860 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 11:38:40,860 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1603930362] [2022-11-16 11:38:40,860 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1603930362] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:38:40,860 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:38:40,861 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-16 11:38:40,861 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [885528747] [2022-11-16 11:38:40,861 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:38:40,861 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 11:38:40,861 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 11:38:40,862 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 11:38:40,862 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:38:40,862 INFO L87 Difference]: Start difference. First operand 44884 states and 236977 transitions. Second operand has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:38:41,716 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:38:41,717 INFO L93 Difference]: Finished difference Result 44894 states and 236997 transitions. [2022-11-16 11:38:41,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 11:38:41,717 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 2 [2022-11-16 11:38:41,717 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:38:42,036 INFO L225 Difference]: With dead ends: 44894 [2022-11-16 11:38:42,037 INFO L226 Difference]: Without dead ends: 44894 [2022-11-16 11:38:42,037 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:38:42,038 INFO L413 NwaCegarLoop]: 32 mSDtfsCounter, 10 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 135 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 50 SdHoareTripleChecker+Invalid, 135 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 135 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-16 11:38:42,038 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 50 Invalid, 135 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 135 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-16 11:38:42,171 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44894 states. [2022-11-16 11:38:44,089 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44894 to 44884. [2022-11-16 11:38:44,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44884 states, 41275 states have (on average 5.7413930950938825) internal successors, (236976), 44883 states have internal predecessors, (236976), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:38:44,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44884 states to 44884 states and 236976 transitions. [2022-11-16 11:38:44,992 INFO L78 Accepts]: Start accepts. Automaton has 44884 states and 236976 transitions. Word has length 2 [2022-11-16 11:38:44,993 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:38:44,993 INFO L495 AbstractCegarLoop]: Abstraction has 44884 states and 236976 transitions. [2022-11-16 11:38:44,993 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:38:44,993 INFO L276 IsEmpty]: Start isEmpty. Operand 44884 states and 236976 transitions. [2022-11-16 11:38:44,993 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2022-11-16 11:38:44,993 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:38:44,993 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2022-11-16 11:38:45,015 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f306c3c4-53cd-4830-aebe-2f9be830f203/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Ended with exit code 0 [2022-11-16 11:38:45,194 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f306c3c4-53cd-4830-aebe-2f9be830f203/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 11:38:45,194 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 67 more)] === [2022-11-16 11:38:45,195 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:38:45,195 INFO L85 PathProgramCache]: Analyzing trace with hash 1632459, now seen corresponding path program 1 times [2022-11-16 11:38:45,195 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 11:38:45,195 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [668495922] [2022-11-16 11:38:45,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:38:45,195 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 11:38:45,196 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f306c3c4-53cd-4830-aebe-2f9be830f203/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 11:38:45,198 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f306c3c4-53cd-4830-aebe-2f9be830f203/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 11:38:45,204 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f306c3c4-53cd-4830-aebe-2f9be830f203/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2022-11-16 11:38:45,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:38:45,332 INFO L263 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 14 conjunts are in the unsatisfiable core [2022-11-16 11:38:45,334 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:38:45,369 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:38:45,417 INFO L321 Elim1Store]: treesize reduction 24, result has 44.2 percent of original size [2022-11-16 11:38:45,417 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 14 treesize of output 26 [2022-11-16 11:38:45,430 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2022-11-16 11:38:45,579 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:38:45,579 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:38:45,781 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:38:45,782 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 11:38:45,782 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [668495922] [2022-11-16 11:38:45,782 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [668495922] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 11:38:45,782 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-16 11:38:45,782 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2] total 4 [2022-11-16 11:38:45,782 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [345037058] [2022-11-16 11:38:45,783 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-16 11:38:45,783 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 11:38:45,783 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 11:38:45,783 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 11:38:45,784 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-11-16 11:38:45,784 INFO L87 Difference]: Start difference. First operand 44884 states and 236976 transitions. Second operand has 6 states, 5 states have (on average 1.2) internal successors, (6), 5 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:38:48,786 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:38:48,786 INFO L93 Difference]: Finished difference Result 59767 states and 306026 transitions. [2022-11-16 11:38:48,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-16 11:38:48,799 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 1.2) internal successors, (6), 5 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2022-11-16 11:38:48,799 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:38:49,269 INFO L225 Difference]: With dead ends: 59767 [2022-11-16 11:38:49,270 INFO L226 Difference]: Without dead ends: 59767 [2022-11-16 11:38:49,270 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-11-16 11:38:49,271 INFO L413 NwaCegarLoop]: 52 mSDtfsCounter, 148 mSDsluCounter, 104 mSDsCounter, 0 mSdLazyCounter, 257 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 148 SdHoareTripleChecker+Valid, 156 SdHoareTripleChecker+Invalid, 533 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 257 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 272 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-11-16 11:38:49,271 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [148 Valid, 156 Invalid, 533 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 257 Invalid, 0 Unknown, 272 Unchecked, 1.6s Time] [2022-11-16 11:38:49,389 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59767 states. [2022-11-16 11:38:50,913 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59767 to 44886. [2022-11-16 11:38:50,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44886 states, 41277 states have (on average 5.741260266007704) internal successors, (236982), 44885 states have internal predecessors, (236982), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:38:51,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44886 states to 44886 states and 236982 transitions. [2022-11-16 11:38:51,188 INFO L78 Accepts]: Start accepts. Automaton has 44886 states and 236982 transitions. Word has length 3 [2022-11-16 11:38:51,188 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:38:51,188 INFO L495 AbstractCegarLoop]: Abstraction has 44886 states and 236982 transitions. [2022-11-16 11:38:51,189 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 1.2) internal successors, (6), 5 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:38:51,189 INFO L276 IsEmpty]: Start isEmpty. Operand 44886 states and 236982 transitions. [2022-11-16 11:38:51,189 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2022-11-16 11:38:51,189 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:38:51,189 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2022-11-16 11:38:51,202 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f306c3c4-53cd-4830-aebe-2f9be830f203/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2022-11-16 11:38:51,401 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f306c3c4-53cd-4830-aebe-2f9be830f203/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 11:38:51,401 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 67 more)] === [2022-11-16 11:38:51,401 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:38:51,402 INFO L85 PathProgramCache]: Analyzing trace with hash 1632237, now seen corresponding path program 1 times [2022-11-16 11:38:51,402 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 11:38:51,402 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1551948090] [2022-11-16 11:38:51,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:38:51,402 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 11:38:51,402 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f306c3c4-53cd-4830-aebe-2f9be830f203/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 11:38:51,403 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f306c3c4-53cd-4830-aebe-2f9be830f203/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 11:38:51,408 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f306c3c4-53cd-4830-aebe-2f9be830f203/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2022-11-16 11:38:51,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:38:51,503 INFO L263 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-16 11:38:51,505 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:38:51,587 INFO L321 Elim1Store]: treesize reduction 37, result has 37.3 percent of original size [2022-11-16 11:38:51,587 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 14 treesize of output 29 [2022-11-16 11:38:51,660 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:38:51,661 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:38:51,893 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:38:51,893 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 11:38:51,894 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1551948090] [2022-11-16 11:38:51,894 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1551948090] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 11:38:51,894 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-16 11:38:51,894 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2] total 4 [2022-11-16 11:38:51,894 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [594753122] [2022-11-16 11:38:51,894 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-16 11:38:51,894 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 11:38:51,895 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 11:38:51,895 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 11:38:51,895 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-11-16 11:38:51,895 INFO L87 Difference]: Start difference. First operand 44886 states and 236982 transitions. Second operand has 6 states, 5 states have (on average 1.2) internal successors, (6), 5 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:38:54,557 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:38:54,558 INFO L93 Difference]: Finished difference Result 44919 states and 237053 transitions. [2022-11-16 11:38:54,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-16 11:38:54,559 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 1.2) internal successors, (6), 5 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2022-11-16 11:38:54,559 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:38:54,859 INFO L225 Difference]: With dead ends: 44919 [2022-11-16 11:38:54,860 INFO L226 Difference]: Without dead ends: 44919 [2022-11-16 11:38:54,860 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2022-11-16 11:38:54,861 INFO L413 NwaCegarLoop]: 32 mSDtfsCounter, 64 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 249 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 64 SdHoareTripleChecker+Valid, 74 SdHoareTripleChecker+Invalid, 260 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 249 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-11-16 11:38:54,861 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [64 Valid, 74 Invalid, 260 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 249 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-11-16 11:38:54,999 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44919 states. [2022-11-16 11:38:56,650 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44919 to 44887. [2022-11-16 11:38:56,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44887 states, 41278 states have (on average 5.741145404331605) internal successors, (236983), 44886 states have internal predecessors, (236983), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:38:56,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44887 states to 44887 states and 236983 transitions. [2022-11-16 11:38:56,937 INFO L78 Accepts]: Start accepts. Automaton has 44887 states and 236983 transitions. Word has length 3 [2022-11-16 11:38:56,937 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:38:56,937 INFO L495 AbstractCegarLoop]: Abstraction has 44887 states and 236983 transitions. [2022-11-16 11:38:56,938 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 1.2) internal successors, (6), 5 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:38:56,938 INFO L276 IsEmpty]: Start isEmpty. Operand 44887 states and 236983 transitions. [2022-11-16 11:38:56,938 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-11-16 11:38:56,938 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:38:56,938 INFO L195 NwaCegarLoop]: trace histogram [3, 1, 1] [2022-11-16 11:38:56,946 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f306c3c4-53cd-4830-aebe-2f9be830f203/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Ended with exit code 0 [2022-11-16 11:38:57,139 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f306c3c4-53cd-4830-aebe-2f9be830f203/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 11:38:57,140 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 67 more)] === [2022-11-16 11:38:57,140 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:38:57,140 INFO L85 PathProgramCache]: Analyzing trace with hash 1568815883, now seen corresponding path program 2 times [2022-11-16 11:38:57,140 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 11:38:57,141 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [200289302] [2022-11-16 11:38:57,141 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-16 11:38:57,141 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 11:38:57,141 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f306c3c4-53cd-4830-aebe-2f9be830f203/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 11:38:57,142 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f306c3c4-53cd-4830-aebe-2f9be830f203/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 11:38:57,143 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f306c3c4-53cd-4830-aebe-2f9be830f203/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2022-11-16 11:38:57,259 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-16 11:38:57,259 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 11:38:57,262 INFO L263 TraceCheckSpWp]: Trace formula consists of 53 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-16 11:38:57,263 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:38:57,281 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:38:57,287 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:38:57,317 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-16 11:38:57,317 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 20 [2022-11-16 11:38:57,328 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2022-11-16 11:38:57,408 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-16 11:38:57,408 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 11:38:57,409 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 11:38:57,409 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [200289302] [2022-11-16 11:38:57,409 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [200289302] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:38:57,409 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:38:57,409 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-16 11:38:57,409 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [769974567] [2022-11-16 11:38:57,409 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:38:57,409 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 11:38:57,410 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 11:38:57,410 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 11:38:57,410 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:38:57,410 INFO L87 Difference]: Start difference. First operand 44887 states and 236983 transitions. Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:38:58,747 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:38:58,748 INFO L93 Difference]: Finished difference Result 44886 states and 236981 transitions. [2022-11-16 11:38:58,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 11:38:58,748 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2022-11-16 11:38:58,749 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:38:58,999 INFO L225 Difference]: With dead ends: 44886 [2022-11-16 11:38:58,999 INFO L226 Difference]: Without dead ends: 44886 [2022-11-16 11:38:58,999 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:38:59,000 INFO L413 NwaCegarLoop]: 36 mSDtfsCounter, 0 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 53 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 54 SdHoareTripleChecker+Invalid, 126 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 53 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 73 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-16 11:38:59,000 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 54 Invalid, 126 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 53 Invalid, 0 Unknown, 73 Unchecked, 0.2s Time] [2022-11-16 11:38:59,089 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44886 states. [2022-11-16 11:39:00,550 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44886 to 44886. [2022-11-16 11:39:00,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44886 states, 41278 states have (on average 5.7410969523717235) internal successors, (236981), 44885 states have internal predecessors, (236981), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:39:00,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44886 states to 44886 states and 236981 transitions. [2022-11-16 11:39:00,833 INFO L78 Accepts]: Start accepts. Automaton has 44886 states and 236981 transitions. Word has length 5 [2022-11-16 11:39:00,833 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:39:00,833 INFO L495 AbstractCegarLoop]: Abstraction has 44886 states and 236981 transitions. [2022-11-16 11:39:00,834 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:39:00,834 INFO L276 IsEmpty]: Start isEmpty. Operand 44886 states and 236981 transitions. [2022-11-16 11:39:00,834 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-11-16 11:39:00,834 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:39:00,834 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-11-16 11:39:00,843 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f306c3c4-53cd-4830-aebe-2f9be830f203/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2022-11-16 11:39:01,037 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f306c3c4-53cd-4830-aebe-2f9be830f203/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 11:39:01,037 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 67 more)] === [2022-11-16 11:39:01,037 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:39:01,037 INFO L85 PathProgramCache]: Analyzing trace with hash 1404341827, now seen corresponding path program 1 times [2022-11-16 11:39:01,038 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 11:39:01,038 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1738033095] [2022-11-16 11:39:01,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:39:01,038 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 11:39:01,038 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f306c3c4-53cd-4830-aebe-2f9be830f203/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 11:39:01,039 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f306c3c4-53cd-4830-aebe-2f9be830f203/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 11:39:01,041 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f306c3c4-53cd-4830-aebe-2f9be830f203/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2022-11-16 11:39:01,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:39:01,139 INFO L263 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-16 11:39:01,141 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:39:01,181 INFO L321 Elim1Store]: treesize reduction 50, result has 23.1 percent of original size [2022-11-16 11:39:01,181 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 12 treesize of output 22 [2022-11-16 11:39:01,217 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:39:01,217 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 11:39:01,217 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 11:39:01,217 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1738033095] [2022-11-16 11:39:01,218 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1738033095] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:39:01,218 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:39:01,218 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-16 11:39:01,218 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2089308554] [2022-11-16 11:39:01,218 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:39:01,218 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 11:39:01,218 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 11:39:01,219 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 11:39:01,219 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:39:01,219 INFO L87 Difference]: Start difference. First operand 44886 states and 236981 transitions. Second operand has 3 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:39:02,968 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:39:02,968 INFO L93 Difference]: Finished difference Result 45954 states and 240923 transitions. [2022-11-16 11:39:02,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 11:39:02,969 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2022-11-16 11:39:02,969 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:39:03,313 INFO L225 Difference]: With dead ends: 45954 [2022-11-16 11:39:03,314 INFO L226 Difference]: Without dead ends: 45954 [2022-11-16 11:39:03,314 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:39:03,314 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 76 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 152 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 76 SdHoareTripleChecker+Valid, 35 SdHoareTripleChecker+Invalid, 159 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 152 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-16 11:39:03,315 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [76 Valid, 35 Invalid, 159 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 152 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-16 11:39:03,439 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45954 states. [2022-11-16 11:39:05,111 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45954 to 45123. [2022-11-16 11:39:05,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45123 states, 41555 states have (on average 5.730525809168571) internal successors, (238132), 45122 states have internal predecessors, (238132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:39:05,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45123 states to 45123 states and 238132 transitions. [2022-11-16 11:39:05,394 INFO L78 Accepts]: Start accepts. Automaton has 45123 states and 238132 transitions. Word has length 6 [2022-11-16 11:39:05,395 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:39:05,395 INFO L495 AbstractCegarLoop]: Abstraction has 45123 states and 238132 transitions. [2022-11-16 11:39:05,395 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:39:05,395 INFO L276 IsEmpty]: Start isEmpty. Operand 45123 states and 238132 transitions. [2022-11-16 11:39:05,395 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-11-16 11:39:05,396 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:39:05,396 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-11-16 11:39:05,403 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f306c3c4-53cd-4830-aebe-2f9be830f203/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Ended with exit code 0 [2022-11-16 11:39:05,598 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f306c3c4-53cd-4830-aebe-2f9be830f203/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 11:39:05,599 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 67 more)] === [2022-11-16 11:39:05,599 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:39:05,599 INFO L85 PathProgramCache]: Analyzing trace with hash 1404341828, now seen corresponding path program 1 times [2022-11-16 11:39:05,599 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 11:39:05,599 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1712288410] [2022-11-16 11:39:05,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:39:05,600 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 11:39:05,600 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f306c3c4-53cd-4830-aebe-2f9be830f203/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 11:39:05,600 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f306c3c4-53cd-4830-aebe-2f9be830f203/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 11:39:05,603 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f306c3c4-53cd-4830-aebe-2f9be830f203/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2022-11-16 11:39:05,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:39:05,709 INFO L263 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-16 11:39:05,711 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:39:05,736 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:39:05,737 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:39:05,761 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-16 11:39:05,762 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 20 [2022-11-16 11:39:05,770 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 12 [2022-11-16 11:39:05,806 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:39:05,806 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 11:39:05,806 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 11:39:05,806 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1712288410] [2022-11-16 11:39:05,806 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1712288410] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:39:05,806 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:39:05,807 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-16 11:39:05,807 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [962465776] [2022-11-16 11:39:05,807 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:39:05,807 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 11:39:05,807 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 11:39:05,807 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 11:39:05,808 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:39:05,808 INFO L87 Difference]: Start difference. First operand 45123 states and 238132 transitions. Second operand has 3 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:39:07,162 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:39:07,163 INFO L93 Difference]: Finished difference Result 44883 states and 237212 transitions. [2022-11-16 11:39:07,163 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 11:39:07,163 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2022-11-16 11:39:07,163 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:39:07,545 INFO L225 Difference]: With dead ends: 44883 [2022-11-16 11:39:07,546 INFO L226 Difference]: Without dead ends: 44883 [2022-11-16 11:39:07,546 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:39:07,546 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 81 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 73 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 81 SdHoareTripleChecker+Valid, 17 SdHoareTripleChecker+Invalid, 78 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 73 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-16 11:39:07,547 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [81 Valid, 17 Invalid, 78 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 73 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-16 11:39:07,641 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44883 states.