./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test6-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version e04fb08f Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_445b0072-55b1-4ac0-a568-1f3b2dbcbce7/bin/uautomizer-tPACEb0tL8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_445b0072-55b1-4ac0-a568-1f3b2dbcbce7/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_445b0072-55b1-4ac0-a568-1f3b2dbcbce7/bin/uautomizer-tPACEb0tL8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_445b0072-55b1-4ac0-a568-1f3b2dbcbce7/bin/uautomizer-tPACEb0tL8/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test6-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_445b0072-55b1-4ac0-a568-1f3b2dbcbce7/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_445b0072-55b1-4ac0-a568-1f3b2dbcbce7/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 1d2a98d270a821b4275b6b35f502458543f3a892fcdda158c69925a18d34f6cf --- 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 12:37:23,730 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-16 12:37:23,732 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-16 12:37:23,767 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-16 12:37:23,768 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-16 12:37:23,774 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-16 12:37:23,777 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-16 12:37:23,786 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-16 12:37:23,790 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-16 12:37:23,794 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-16 12:37:23,796 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-16 12:37:23,798 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-16 12:37:23,800 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-16 12:37:23,808 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-16 12:37:23,809 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-16 12:37:23,812 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-16 12:37:23,814 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-16 12:37:23,816 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-16 12:37:23,818 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-16 12:37:23,826 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-16 12:37:23,832 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-16 12:37:23,833 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-16 12:37:23,835 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-16 12:37:23,836 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-16 12:37:23,841 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-16 12:37:23,841 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-16 12:37:23,842 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-16 12:37:23,843 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-16 12:37:23,843 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-16 12:37:23,845 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-16 12:37:23,845 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-16 12:37:23,846 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-16 12:37:23,848 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-16 12:37:23,849 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-16 12:37:23,850 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-16 12:37:23,851 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-16 12:37:23,852 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-16 12:37:23,852 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-16 12:37:23,852 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-16 12:37:23,853 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-16 12:37:23,854 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-16 12:37:23,855 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_445b0072-55b1-4ac0-a568-1f3b2dbcbce7/bin/uautomizer-tPACEb0tL8/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2022-11-16 12:37:23,892 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-16 12:37:23,898 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-16 12:37:23,899 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-16 12:37:23,899 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-16 12:37:23,900 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-16 12:37:23,900 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-16 12:37:23,901 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-16 12:37:23,902 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-16 12:37:23,902 INFO L138 SettingsManager]: * Use SBE=true [2022-11-16 12:37:23,902 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-16 12:37:23,904 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-16 12:37:23,904 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-16 12:37:23,904 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-16 12:37:23,905 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-16 12:37:23,905 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-16 12:37:23,905 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-11-16 12:37:23,906 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-11-16 12:37:23,906 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-11-16 12:37:23,906 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-16 12:37:23,906 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-16 12:37:23,907 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-16 12:37:23,907 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-16 12:37:23,907 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-16 12:37:23,908 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-16 12:37:23,908 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-16 12:37:23,908 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 12:37:23,909 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-16 12:37:23,909 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-16 12:37:23,909 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-16 12:37:23,910 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-16 12:37:23,912 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_445b0072-55b1-4ac0-a568-1f3b2dbcbce7/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_445b0072-55b1-4ac0-a568-1f3b2dbcbce7/bin/uautomizer-tPACEb0tL8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1d2a98d270a821b4275b6b35f502458543f3a892fcdda158c69925a18d34f6cf [2022-11-16 12:37:24,252 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-16 12:37:24,279 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-16 12:37:24,282 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-16 12:37:24,284 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-16 12:37:24,285 INFO L275 PluginConnector]: CDTParser initialized [2022-11-16 12:37:24,286 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_445b0072-55b1-4ac0-a568-1f3b2dbcbce7/bin/uautomizer-tPACEb0tL8/../../sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test6-2.i [2022-11-16 12:37:24,379 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_445b0072-55b1-4ac0-a568-1f3b2dbcbce7/bin/uautomizer-tPACEb0tL8/data/26c3ae2bd/67e01718c1b4413da0693f9b96ef604b/FLAGee6f0098f [2022-11-16 12:37:25,102 INFO L306 CDTParser]: Found 1 translation units. [2022-11-16 12:37:25,103 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_445b0072-55b1-4ac0-a568-1f3b2dbcbce7/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test6-2.i [2022-11-16 12:37:25,123 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_445b0072-55b1-4ac0-a568-1f3b2dbcbce7/bin/uautomizer-tPACEb0tL8/data/26c3ae2bd/67e01718c1b4413da0693f9b96ef604b/FLAGee6f0098f [2022-11-16 12:37:25,296 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_445b0072-55b1-4ac0-a568-1f3b2dbcbce7/bin/uautomizer-tPACEb0tL8/data/26c3ae2bd/67e01718c1b4413da0693f9b96ef604b [2022-11-16 12:37:25,299 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-16 12:37:25,300 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-16 12:37:25,303 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-16 12:37:25,303 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-16 12:37:25,311 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-16 12:37:25,312 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 12:37:25" (1/1) ... [2022-11-16 12:37:25,313 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@61b236d8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:37:25, skipping insertion in model container [2022-11-16 12:37:25,314 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 12:37:25" (1/1) ... [2022-11-16 12:37:25,324 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-16 12:37:25,386 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-16 12:37:26,148 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_445b0072-55b1-4ac0-a568-1f3b2dbcbce7/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test6-2.i[44118,44131] [2022-11-16 12:37:26,162 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_445b0072-55b1-4ac0-a568-1f3b2dbcbce7/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test6-2.i[44660,44673] [2022-11-16 12:37:26,304 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_445b0072-55b1-4ac0-a568-1f3b2dbcbce7/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test6-2.i[56247,56260] [2022-11-16 12:37:26,305 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_445b0072-55b1-4ac0-a568-1f3b2dbcbce7/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test6-2.i[56368,56381] [2022-11-16 12:37:26,327 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 12:37:26,340 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 12:37:26,340 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@122c53d4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:37:26, skipping insertion in model container [2022-11-16 12:37:26,341 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-16 12:37:26,341 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2022-11-16 12:37:26,344 INFO L158 Benchmark]: Toolchain (without parser) took 1041.98ms. Allocated memory is still 104.9MB. Free memory was 67.1MB in the beginning and 67.7MB in the end (delta: -621.8kB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-11-16 12:37:26,345 INFO L158 Benchmark]: CDTParser took 0.35ms. Allocated memory is still 104.9MB. Free memory was 75.5MB in the beginning and 75.4MB in the end (delta: 30.2kB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-16 12:37:26,346 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1038.36ms. Allocated memory is still 104.9MB. Free memory was 67.1MB in the beginning and 67.7MB in the end (delta: -621.8kB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-11-16 12:37:26,348 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.35ms. Allocated memory is still 104.9MB. Free memory was 75.5MB in the beginning and 75.4MB in the end (delta: 30.2kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 1038.36ms. Allocated memory is still 104.9MB. Free memory was 67.1MB in the beginning and 67.7MB in the end (delta: -621.8kB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 990]: Unsupported Syntax Found a cast between two array/pointer types of different sizes while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_445b0072-55b1-4ac0-a568-1f3b2dbcbce7/bin/uautomizer-tPACEb0tL8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_445b0072-55b1-4ac0-a568-1f3b2dbcbce7/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_445b0072-55b1-4ac0-a568-1f3b2dbcbce7/bin/uautomizer-tPACEb0tL8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_445b0072-55b1-4ac0-a568-1f3b2dbcbce7/bin/uautomizer-tPACEb0tL8/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test6-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_445b0072-55b1-4ac0-a568-1f3b2dbcbce7/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_445b0072-55b1-4ac0-a568-1f3b2dbcbce7/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 1d2a98d270a821b4275b6b35f502458543f3a892fcdda158c69925a18d34f6cf --- 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 12:37:28,689 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-16 12:37:28,691 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-16 12:37:28,727 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-16 12:37:28,728 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-16 12:37:28,729 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-16 12:37:28,731 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-16 12:37:28,733 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-16 12:37:28,737 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-16 12:37:28,738 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-16 12:37:28,739 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-16 12:37:28,741 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-16 12:37:28,741 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-16 12:37:28,742 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-16 12:37:28,744 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-16 12:37:28,745 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-16 12:37:28,746 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-16 12:37:28,747 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-16 12:37:28,749 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-16 12:37:28,751 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-16 12:37:28,753 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-16 12:37:28,755 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-16 12:37:28,756 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-16 12:37:28,757 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-16 12:37:28,762 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-16 12:37:28,762 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-16 12:37:28,763 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-16 12:37:28,764 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-16 12:37:28,764 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-16 12:37:28,765 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-16 12:37:28,766 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-16 12:37:28,767 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-16 12:37:28,768 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-16 12:37:28,768 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-16 12:37:28,770 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-16 12:37:28,770 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-16 12:37:28,771 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-16 12:37:28,771 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-16 12:37:28,772 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-16 12:37:28,773 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-16 12:37:28,773 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-16 12:37:28,776 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_445b0072-55b1-4ac0-a568-1f3b2dbcbce7/bin/uautomizer-tPACEb0tL8/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2022-11-16 12:37:28,823 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-16 12:37:28,827 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-16 12:37:28,829 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-16 12:37:28,829 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-16 12:37:28,831 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-16 12:37:28,831 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-16 12:37:28,832 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-16 12:37:28,833 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-16 12:37:28,833 INFO L138 SettingsManager]: * Use SBE=true [2022-11-16 12:37:28,833 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-16 12:37:28,834 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-16 12:37:28,835 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-16 12:37:28,835 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-16 12:37:28,835 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-16 12:37:28,835 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-16 12:37:28,836 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-11-16 12:37:28,836 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-11-16 12:37:28,836 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-11-16 12:37:28,836 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-16 12:37:28,837 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-16 12:37:28,837 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-11-16 12:37:28,837 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-11-16 12:37:28,837 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-16 12:37:28,838 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-16 12:37:28,838 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-16 12:37:28,838 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-16 12:37:28,838 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-16 12:37:28,839 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 12:37:28,839 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-16 12:37:28,839 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-16 12:37:28,839 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-11-16 12:37:28,840 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-11-16 12:37:28,840 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-16 12:37:28,840 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_445b0072-55b1-4ac0-a568-1f3b2dbcbce7/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_445b0072-55b1-4ac0-a568-1f3b2dbcbce7/bin/uautomizer-tPACEb0tL8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1d2a98d270a821b4275b6b35f502458543f3a892fcdda158c69925a18d34f6cf [2022-11-16 12:37:29,304 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-16 12:37:29,330 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-16 12:37:29,333 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-16 12:37:29,334 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-16 12:37:29,335 INFO L275 PluginConnector]: CDTParser initialized [2022-11-16 12:37:29,337 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_445b0072-55b1-4ac0-a568-1f3b2dbcbce7/bin/uautomizer-tPACEb0tL8/../../sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test6-2.i [2022-11-16 12:37:29,433 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_445b0072-55b1-4ac0-a568-1f3b2dbcbce7/bin/uautomizer-tPACEb0tL8/data/062257dac/db5da1035985465c9b20c90bddcf0157/FLAGf9d68db9a [2022-11-16 12:37:30,311 INFO L306 CDTParser]: Found 1 translation units. [2022-11-16 12:37:30,312 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_445b0072-55b1-4ac0-a568-1f3b2dbcbce7/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test6-2.i [2022-11-16 12:37:30,331 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_445b0072-55b1-4ac0-a568-1f3b2dbcbce7/bin/uautomizer-tPACEb0tL8/data/062257dac/db5da1035985465c9b20c90bddcf0157/FLAGf9d68db9a [2022-11-16 12:37:30,484 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_445b0072-55b1-4ac0-a568-1f3b2dbcbce7/bin/uautomizer-tPACEb0tL8/data/062257dac/db5da1035985465c9b20c90bddcf0157 [2022-11-16 12:37:30,487 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-16 12:37:30,489 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-16 12:37:30,490 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-16 12:37:30,490 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-16 12:37:30,495 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-16 12:37:30,496 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 12:37:30" (1/1) ... [2022-11-16 12:37:30,497 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@78841480 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:37:30, skipping insertion in model container [2022-11-16 12:37:30,498 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 12:37:30" (1/1) ... [2022-11-16 12:37:30,513 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-16 12:37:30,573 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-16 12:37:31,208 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_445b0072-55b1-4ac0-a568-1f3b2dbcbce7/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test6-2.i[44118,44131] [2022-11-16 12:37:31,218 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_445b0072-55b1-4ac0-a568-1f3b2dbcbce7/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test6-2.i[44660,44673] [2022-11-16 12:37:31,338 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_445b0072-55b1-4ac0-a568-1f3b2dbcbce7/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test6-2.i[56247,56260] [2022-11-16 12:37:31,339 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_445b0072-55b1-4ac0-a568-1f3b2dbcbce7/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test6-2.i[56368,56381] [2022-11-16 12:37:31,360 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 12:37:31,375 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2022-11-16 12:37:31,396 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-16 12:37:31,422 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_445b0072-55b1-4ac0-a568-1f3b2dbcbce7/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test6-2.i[44118,44131] [2022-11-16 12:37:31,425 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_445b0072-55b1-4ac0-a568-1f3b2dbcbce7/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test6-2.i[44660,44673] [2022-11-16 12:37:31,508 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_445b0072-55b1-4ac0-a568-1f3b2dbcbce7/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test6-2.i[56247,56260] [2022-11-16 12:37:31,509 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_445b0072-55b1-4ac0-a568-1f3b2dbcbce7/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test6-2.i[56368,56381] [2022-11-16 12:37:31,521 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 12:37:31,526 INFO L203 MainTranslator]: Completed pre-run [2022-11-16 12:37:31,563 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_445b0072-55b1-4ac0-a568-1f3b2dbcbce7/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test6-2.i[44118,44131] [2022-11-16 12:37:31,565 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_445b0072-55b1-4ac0-a568-1f3b2dbcbce7/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test6-2.i[44660,44673] [2022-11-16 12:37:31,644 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_445b0072-55b1-4ac0-a568-1f3b2dbcbce7/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test6-2.i[56247,56260] [2022-11-16 12:37:31,645 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_445b0072-55b1-4ac0-a568-1f3b2dbcbce7/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test6-2.i[56368,56381] [2022-11-16 12:37:31,667 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 12:37:31,792 INFO L208 MainTranslator]: Completed translation [2022-11-16 12:37:31,792 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:37:31 WrapperNode [2022-11-16 12:37:31,792 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-16 12:37:31,794 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-16 12:37:31,798 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-16 12:37:31,798 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-16 12:37:31,806 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:37:31" (1/1) ... [2022-11-16 12:37:31,866 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:37:31" (1/1) ... [2022-11-16 12:37:31,986 INFO L138 Inliner]: procedures = 285, calls = 347, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 1200 [2022-11-16 12:37:31,986 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-16 12:37:31,987 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-16 12:37:31,988 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-16 12:37:31,989 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-16 12:37:31,999 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:37:31" (1/1) ... [2022-11-16 12:37:32,002 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:37:31" (1/1) ... [2022-11-16 12:37:32,017 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:37:31" (1/1) ... [2022-11-16 12:37:32,027 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:37:31" (1/1) ... [2022-11-16 12:37:32,108 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:37:31" (1/1) ... [2022-11-16 12:37:32,123 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:37:31" (1/1) ... [2022-11-16 12:37:32,143 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:37:31" (1/1) ... [2022-11-16 12:37:32,148 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:37:31" (1/1) ... [2022-11-16 12:37:32,160 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-16 12:37:32,170 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-16 12:37:32,171 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-16 12:37:32,172 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-16 12:37:32,173 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:37:31" (1/1) ... [2022-11-16 12:37:32,180 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 12:37:32,192 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_445b0072-55b1-4ac0-a568-1f3b2dbcbce7/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:37:32,210 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_445b0072-55b1-4ac0-a568-1f3b2dbcbce7/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-16 12:37:32,226 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_445b0072-55b1-4ac0-a568-1f3b2dbcbce7/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-16 12:37:32,269 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2022-11-16 12:37:32,269 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2022-11-16 12:37:32,269 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-16 12:37:32,270 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2022-11-16 12:37:32,270 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-16 12:37:32,270 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-16 12:37:32,270 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2022-11-16 12:37:32,270 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-11-16 12:37:32,271 INFO L130 BoogieDeclarations]: Found specification of procedure alt_bzero [2022-11-16 12:37:32,271 INFO L138 BoogieDeclarations]: Found implementation of procedure alt_bzero [2022-11-16 12:37:32,271 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-11-16 12:37:32,271 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-11-16 12:37:32,272 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-16 12:37:32,272 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-16 12:37:32,272 INFO L130 BoogieDeclarations]: Found specification of procedure alt_malloc [2022-11-16 12:37:32,272 INFO L138 BoogieDeclarations]: Found implementation of procedure alt_malloc [2022-11-16 12:37:32,272 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-16 12:37:32,273 INFO L130 BoogieDeclarations]: Found specification of procedure alt_free [2022-11-16 12:37:32,273 INFO L138 BoogieDeclarations]: Found implementation of procedure alt_free [2022-11-16 12:37:32,274 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-16 12:37:32,274 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-16 12:37:32,703 INFO L235 CfgBuilder]: Building ICFG [2022-11-16 12:37:32,705 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-16 12:37:39,340 INFO L276 CfgBuilder]: Performing block encoding [2022-11-16 12:37:39,357 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-16 12:37:39,357 INFO L300 CfgBuilder]: Removed 72 assume(true) statements. [2022-11-16 12:37:39,361 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 12:37:39 BoogieIcfgContainer [2022-11-16 12:37:39,362 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-16 12:37:39,364 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-16 12:37:39,364 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-16 12:37:39,368 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-16 12:37:39,369 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 12:37:30" (1/3) ... [2022-11-16 12:37:39,369 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1d9981ac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 12:37:39, skipping insertion in model container [2022-11-16 12:37:39,370 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:37:31" (2/3) ... [2022-11-16 12:37:39,370 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1d9981ac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 12:37:39, skipping insertion in model container [2022-11-16 12:37:39,370 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 12:37:39" (3/3) ... [2022-11-16 12:37:39,372 INFO L112 eAbstractionObserver]: Analyzing ICFG uthash_SFH_test6-2.i [2022-11-16 12:37:39,402 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-16 12:37:39,402 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 634 error locations. [2022-11-16 12:37:39,505 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-16 12:37:39,516 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;@1a585418, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-16 12:37:39,517 INFO L358 AbstractCegarLoop]: Starting to check reachability of 634 error locations. [2022-11-16 12:37:39,533 INFO L276 IsEmpty]: Start isEmpty. Operand has 1279 states, 625 states have (on average 2.2448) internal successors, (1403), 1259 states have internal predecessors, (1403), 16 states have call successors, (16), 4 states have call predecessors, (16), 4 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2022-11-16 12:37:39,540 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2022-11-16 12:37:39,541 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:37:39,541 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2022-11-16 12:37:39,542 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alt_mallocErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_mallocErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_freeErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 631 more)] === [2022-11-16 12:37:39,548 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:37:39,549 INFO L85 PathProgramCache]: Analyzing trace with hash 77521, now seen corresponding path program 1 times [2022-11-16 12:37:39,564 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 12:37:39,565 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1990328889] [2022-11-16 12:37:39,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:37:39,566 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 12:37:39,566 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_445b0072-55b1-4ac0-a568-1f3b2dbcbce7/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 12:37:39,573 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_445b0072-55b1-4ac0-a568-1f3b2dbcbce7/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 12:37:39,578 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_445b0072-55b1-4ac0-a568-1f3b2dbcbce7/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 12:37:39,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:37:39,831 INFO L263 TraceCheckSpWp]: Trace formula consists of 34 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-16 12:37:39,838 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:37:39,918 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 0 case distinctions, treesize of input 6 treesize of output 7 [2022-11-16 12:37:39,934 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 12:37:39,934 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:37:39,935 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 12:37:39,936 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1990328889] [2022-11-16 12:37:39,936 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1990328889] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:37:39,937 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:37:39,937 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-16 12:37:39,939 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [816643271] [2022-11-16 12:37:39,940 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:37:39,945 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 12:37:39,946 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 12:37:39,981 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 12:37:39,982 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 12:37:39,986 INFO L87 Difference]: Start difference. First operand has 1279 states, 625 states have (on average 2.2448) internal successors, (1403), 1259 states have internal predecessors, (1403), 16 states have call successors, (16), 4 states have call predecessors, (16), 4 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 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 12:37:43,650 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:37:43,650 INFO L93 Difference]: Finished difference Result 1536 states and 1625 transitions. [2022-11-16 12:37:43,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 12:37:43,653 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 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 3 [2022-11-16 12:37:43,654 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:37:43,682 INFO L225 Difference]: With dead ends: 1536 [2022-11-16 12:37:43,683 INFO L226 Difference]: Without dead ends: 1534 [2022-11-16 12:37:43,684 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 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 12:37:43,692 INFO L413 NwaCegarLoop]: 909 mSDtfsCounter, 906 mSDsluCounter, 345 mSDsCounter, 0 mSdLazyCounter, 790 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 909 SdHoareTripleChecker+Valid, 1254 SdHoareTripleChecker+Invalid, 803 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 790 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2022-11-16 12:37:43,693 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [909 Valid, 1254 Invalid, 803 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 790 Invalid, 0 Unknown, 0 Unchecked, 3.5s Time] [2022-11-16 12:37:43,717 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1534 states. [2022-11-16 12:37:43,802 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1534 to 1299. [2022-11-16 12:37:43,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1299 states, 659 states have (on average 2.1062215477996964) internal successors, (1388), 1280 states have internal predecessors, (1388), 15 states have call successors, (15), 4 states have call predecessors, (15), 4 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2022-11-16 12:37:43,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1299 states to 1299 states and 1418 transitions. [2022-11-16 12:37:43,816 INFO L78 Accepts]: Start accepts. Automaton has 1299 states and 1418 transitions. Word has length 3 [2022-11-16 12:37:43,816 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:37:43,816 INFO L495 AbstractCegarLoop]: Abstraction has 1299 states and 1418 transitions. [2022-11-16 12:37:43,817 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 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 12:37:43,817 INFO L276 IsEmpty]: Start isEmpty. Operand 1299 states and 1418 transitions. [2022-11-16 12:37:43,817 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2022-11-16 12:37:43,818 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:37:43,818 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2022-11-16 12:37:43,833 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_445b0072-55b1-4ac0-a568-1f3b2dbcbce7/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 12:37:44,032 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_445b0072-55b1-4ac0-a568-1f3b2dbcbce7/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 12:37:44,032 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alt_mallocErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_mallocErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_freeErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 631 more)] === [2022-11-16 12:37:44,033 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:37:44,033 INFO L85 PathProgramCache]: Analyzing trace with hash 77522, now seen corresponding path program 1 times [2022-11-16 12:37:44,034 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 12:37:44,034 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1406767009] [2022-11-16 12:37:44,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:37:44,035 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 12:37:44,035 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_445b0072-55b1-4ac0-a568-1f3b2dbcbce7/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 12:37:44,037 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_445b0072-55b1-4ac0-a568-1f3b2dbcbce7/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 12:37:44,057 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_445b0072-55b1-4ac0-a568-1f3b2dbcbce7/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 12:37:44,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:37:44,227 INFO L263 TraceCheckSpWp]: Trace formula consists of 34 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-16 12:37:44,230 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:37:44,253 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 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-16 12:37:44,277 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 12:37:44,277 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:37:44,278 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 12:37:44,279 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1406767009] [2022-11-16 12:37:44,279 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1406767009] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:37:44,279 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:37:44,280 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-16 12:37:44,280 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [599669658] [2022-11-16 12:37:44,280 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:37:44,281 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 12:37:44,282 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 12:37:44,282 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 12:37:44,282 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 12:37:44,283 INFO L87 Difference]: Start difference. First operand 1299 states and 1418 transitions. Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 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 12:37:49,681 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:37:49,681 INFO L93 Difference]: Finished difference Result 1890 states and 2056 transitions. [2022-11-16 12:37:49,682 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 12:37:49,682 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 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 3 [2022-11-16 12:37:49,683 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:37:49,691 INFO L225 Difference]: With dead ends: 1890 [2022-11-16 12:37:49,692 INFO L226 Difference]: Without dead ends: 1890 [2022-11-16 12:37:49,693 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 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 12:37:49,695 INFO L413 NwaCegarLoop]: 1053 mSDtfsCounter, 624 mSDsluCounter, 701 mSDsCounter, 0 mSdLazyCounter, 917 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 631 SdHoareTripleChecker+Valid, 1754 SdHoareTripleChecker+Invalid, 922 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 917 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.3s IncrementalHoareTripleChecker+Time [2022-11-16 12:37:49,702 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [631 Valid, 1754 Invalid, 922 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 917 Invalid, 0 Unknown, 0 Unchecked, 5.3s Time] [2022-11-16 12:37:49,707 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1890 states. [2022-11-16 12:37:49,754 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1890 to 1503. [2022-11-16 12:37:49,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1503 states, 862 states have (on average 2.0881670533642693) internal successors, (1800), 1482 states have internal predecessors, (1800), 17 states have call successors, (17), 4 states have call predecessors, (17), 4 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) [2022-11-16 12:37:49,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1503 states to 1503 states and 1834 transitions. [2022-11-16 12:37:49,770 INFO L78 Accepts]: Start accepts. Automaton has 1503 states and 1834 transitions. Word has length 3 [2022-11-16 12:37:49,770 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:37:49,771 INFO L495 AbstractCegarLoop]: Abstraction has 1503 states and 1834 transitions. [2022-11-16 12:37:49,771 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 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 12:37:49,771 INFO L276 IsEmpty]: Start isEmpty. Operand 1503 states and 1834 transitions. [2022-11-16 12:37:49,772 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-11-16 12:37:49,772 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:37:49,772 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:37:49,787 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_445b0072-55b1-4ac0-a568-1f3b2dbcbce7/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 12:37:49,981 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_445b0072-55b1-4ac0-a568-1f3b2dbcbce7/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 12:37:49,981 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alt_mallocErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_mallocErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_freeErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 631 more)] === [2022-11-16 12:37:49,982 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:37:49,982 INFO L85 PathProgramCache]: Analyzing trace with hash -1111693489, now seen corresponding path program 1 times [2022-11-16 12:37:49,982 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 12:37:49,983 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [838665888] [2022-11-16 12:37:49,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:37:49,983 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 12:37:49,983 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_445b0072-55b1-4ac0-a568-1f3b2dbcbce7/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 12:37:49,984 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_445b0072-55b1-4ac0-a568-1f3b2dbcbce7/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 12:37:49,991 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_445b0072-55b1-4ac0-a568-1f3b2dbcbce7/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 12:37:50,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:37:50,194 INFO L263 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-16 12:37:50,197 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:37:50,217 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 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-16 12:37:50,224 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 0 case distinctions, treesize of input 6 treesize of output 7 [2022-11-16 12:37:50,300 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:37:50,302 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2022-11-16 12:37:50,323 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-16 12:37:50,324 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2022-11-16 12:37:50,366 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 12:37:50,367 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:37:50,367 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 12:37:50,367 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [838665888] [2022-11-16 12:37:50,367 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [838665888] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:37:50,368 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:37:50,368 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 12:37:50,368 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [686384154] [2022-11-16 12:37:50,368 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:37:50,369 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 12:37:50,369 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 12:37:50,369 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 12:37:50,370 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-16 12:37:50,370 INFO L87 Difference]: Start difference. First operand 1503 states and 1834 transitions. Second operand has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 states have internal predecessors, (8), 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 12:37:59,134 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:37:59,135 INFO L93 Difference]: Finished difference Result 2568 states and 2977 transitions. [2022-11-16 12:37:59,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 12:37:59,138 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 states have internal predecessors, (8), 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 8 [2022-11-16 12:37:59,139 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:37:59,149 INFO L225 Difference]: With dead ends: 2568 [2022-11-16 12:37:59,149 INFO L226 Difference]: Without dead ends: 2568 [2022-11-16 12:37:59,150 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-16 12:37:59,151 INFO L413 NwaCegarLoop]: 716 mSDtfsCounter, 1111 mSDsluCounter, 1092 mSDsCounter, 0 mSdLazyCounter, 2206 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1117 SdHoareTripleChecker+Valid, 1808 SdHoareTripleChecker+Invalid, 2221 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 2206 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.6s IncrementalHoareTripleChecker+Time [2022-11-16 12:37:59,152 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1117 Valid, 1808 Invalid, 2221 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 2206 Invalid, 0 Unknown, 0 Unchecked, 8.6s Time] [2022-11-16 12:37:59,182 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2568 states. [2022-11-16 12:37:59,216 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2568 to 1648. [2022-11-16 12:37:59,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1648 states, 1007 states have (on average 2.0685203574975173) internal successors, (2083), 1627 states have internal predecessors, (2083), 17 states have call successors, (17), 4 states have call predecessors, (17), 4 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) [2022-11-16 12:37:59,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1648 states to 1648 states and 2117 transitions. [2022-11-16 12:37:59,225 INFO L78 Accepts]: Start accepts. Automaton has 1648 states and 2117 transitions. Word has length 8 [2022-11-16 12:37:59,225 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:37:59,225 INFO L495 AbstractCegarLoop]: Abstraction has 1648 states and 2117 transitions. [2022-11-16 12:37:59,226 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 states have internal predecessors, (8), 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 12:37:59,226 INFO L276 IsEmpty]: Start isEmpty. Operand 1648 states and 2117 transitions. [2022-11-16 12:37:59,226 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-11-16 12:37:59,226 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:37:59,227 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:37:59,244 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_445b0072-55b1-4ac0-a568-1f3b2dbcbce7/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 12:37:59,438 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_445b0072-55b1-4ac0-a568-1f3b2dbcbce7/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 12:37:59,439 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alt_mallocErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_mallocErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_freeErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 631 more)] === [2022-11-16 12:37:59,439 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:37:59,440 INFO L85 PathProgramCache]: Analyzing trace with hash -102759776, now seen corresponding path program 1 times [2022-11-16 12:37:59,440 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 12:37:59,440 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1705681500] [2022-11-16 12:37:59,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:37:59,441 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 12:37:59,441 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_445b0072-55b1-4ac0-a568-1f3b2dbcbce7/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 12:37:59,442 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_445b0072-55b1-4ac0-a568-1f3b2dbcbce7/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 12:37:59,462 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_445b0072-55b1-4ac0-a568-1f3b2dbcbce7/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 12:37:59,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:37:59,645 INFO L263 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-16 12:37:59,648 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:37:59,664 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 0 case distinctions, treesize of input 6 treesize of output 7 [2022-11-16 12:37:59,694 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 12:37:59,694 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:37:59,695 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 12:37:59,695 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1705681500] [2022-11-16 12:37:59,695 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1705681500] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:37:59,695 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:37:59,695 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 12:37:59,696 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1465767311] [2022-11-16 12:37:59,696 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:37:59,697 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 12:37:59,697 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 12:37:59,697 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 12:37:59,698 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 12:37:59,698 INFO L87 Difference]: Start difference. First operand 1648 states and 2117 transitions. Second operand has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 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 12:38:05,371 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:38:05,372 INFO L93 Difference]: Finished difference Result 2810 states and 3510 transitions. [2022-11-16 12:38:05,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 12:38:05,375 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 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 9 [2022-11-16 12:38:05,375 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:38:05,387 INFO L225 Difference]: With dead ends: 2810 [2022-11-16 12:38:05,387 INFO L226 Difference]: Without dead ends: 2810 [2022-11-16 12:38:05,387 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-16 12:38:05,389 INFO L413 NwaCegarLoop]: 1319 mSDtfsCounter, 2331 mSDsluCounter, 1256 mSDsCounter, 0 mSdLazyCounter, 1784 mSolverCounterSat, 57 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2337 SdHoareTripleChecker+Valid, 2575 SdHoareTripleChecker+Invalid, 1841 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 1784 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.6s IncrementalHoareTripleChecker+Time [2022-11-16 12:38:05,389 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2337 Valid, 2575 Invalid, 1841 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [57 Valid, 1784 Invalid, 0 Unknown, 0 Unchecked, 5.6s Time] [2022-11-16 12:38:05,394 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2810 states. [2022-11-16 12:38:05,432 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2810 to 1603. [2022-11-16 12:38:05,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1603 states, 1007 states have (on average 2.009930486593843) internal successors, (2024), 1582 states have internal predecessors, (2024), 17 states have call successors, (17), 4 states have call predecessors, (17), 4 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) [2022-11-16 12:38:05,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1603 states to 1603 states and 2058 transitions. [2022-11-16 12:38:05,442 INFO L78 Accepts]: Start accepts. Automaton has 1603 states and 2058 transitions. Word has length 9 [2022-11-16 12:38:05,442 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:38:05,442 INFO L495 AbstractCegarLoop]: Abstraction has 1603 states and 2058 transitions. [2022-11-16 12:38:05,442 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 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 12:38:05,443 INFO L276 IsEmpty]: Start isEmpty. Operand 1603 states and 2058 transitions. [2022-11-16 12:38:05,443 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-11-16 12:38:05,443 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:38:05,444 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:38:05,468 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_445b0072-55b1-4ac0-a568-1f3b2dbcbce7/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 12:38:05,668 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_445b0072-55b1-4ac0-a568-1f3b2dbcbce7/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 12:38:05,669 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alt_mallocErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_mallocErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_freeErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 631 more)] === [2022-11-16 12:38:05,669 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:38:05,669 INFO L85 PathProgramCache]: Analyzing trace with hash -102759775, now seen corresponding path program 1 times [2022-11-16 12:38:05,669 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 12:38:05,670 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1055270726] [2022-11-16 12:38:05,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:38:05,670 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 12:38:05,670 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_445b0072-55b1-4ac0-a568-1f3b2dbcbce7/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 12:38:05,671 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_445b0072-55b1-4ac0-a568-1f3b2dbcbce7/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 12:38:05,673 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_445b0072-55b1-4ac0-a568-1f3b2dbcbce7/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 12:38:05,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:38:05,870 INFO L263 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-16 12:38:05,873 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:38:05,894 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 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-16 12:38:05,962 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 12:38:05,962 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:38:05,963 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 12:38:05,963 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1055270726] [2022-11-16 12:38:05,963 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1055270726] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:38:05,963 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:38:05,964 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 12:38:05,964 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1009532811] [2022-11-16 12:38:05,964 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:38:05,964 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 12:38:05,965 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 12:38:05,965 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 12:38:05,965 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 12:38:05,966 INFO L87 Difference]: Start difference. First operand 1603 states and 2058 transitions. Second operand has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 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 12:38:12,408 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:38:12,409 INFO L93 Difference]: Finished difference Result 2439 states and 3103 transitions. [2022-11-16 12:38:12,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 12:38:12,409 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 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 9 [2022-11-16 12:38:12,410 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:38:12,418 INFO L225 Difference]: With dead ends: 2439 [2022-11-16 12:38:12,419 INFO L226 Difference]: Without dead ends: 2439 [2022-11-16 12:38:12,419 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-16 12:38:12,420 INFO L413 NwaCegarLoop]: 1511 mSDtfsCounter, 1581 mSDsluCounter, 1203 mSDsCounter, 0 mSdLazyCounter, 1626 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1586 SdHoareTripleChecker+Valid, 2714 SdHoareTripleChecker+Invalid, 1643 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 1626 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.3s IncrementalHoareTripleChecker+Time [2022-11-16 12:38:12,421 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1586 Valid, 2714 Invalid, 1643 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 1626 Invalid, 0 Unknown, 0 Unchecked, 6.3s Time] [2022-11-16 12:38:12,424 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2439 states. [2022-11-16 12:38:12,457 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2439 to 1593. [2022-11-16 12:38:12,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1593 states, 1007 states have (on average 1.9860973187686197) internal successors, (2000), 1572 states have internal predecessors, (2000), 17 states have call successors, (17), 4 states have call predecessors, (17), 4 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) [2022-11-16 12:38:12,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1593 states to 1593 states and 2034 transitions. [2022-11-16 12:38:12,466 INFO L78 Accepts]: Start accepts. Automaton has 1593 states and 2034 transitions. Word has length 9 [2022-11-16 12:38:12,467 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:38:12,467 INFO L495 AbstractCegarLoop]: Abstraction has 1593 states and 2034 transitions. [2022-11-16 12:38:12,467 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 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 12:38:12,467 INFO L276 IsEmpty]: Start isEmpty. Operand 1593 states and 2034 transitions. [2022-11-16 12:38:12,468 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-11-16 12:38:12,468 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:38:12,468 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:38:12,484 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_445b0072-55b1-4ac0-a568-1f3b2dbcbce7/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 12:38:12,682 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_445b0072-55b1-4ac0-a568-1f3b2dbcbce7/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 12:38:12,683 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr516ASSERT_VIOLATIONMEMORY_LEAK === [alt_mallocErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_mallocErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_freeErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 631 more)] === [2022-11-16 12:38:12,683 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:38:12,683 INFO L85 PathProgramCache]: Analyzing trace with hash -1033799265, now seen corresponding path program 1 times [2022-11-16 12:38:12,683 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 12:38:12,684 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1637421914] [2022-11-16 12:38:12,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:38:12,684 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 12:38:12,684 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_445b0072-55b1-4ac0-a568-1f3b2dbcbce7/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 12:38:12,690 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_445b0072-55b1-4ac0-a568-1f3b2dbcbce7/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 12:38:12,726 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_445b0072-55b1-4ac0-a568-1f3b2dbcbce7/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 12:38:12,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:38:12,920 INFO L263 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-16 12:38:12,922 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:38:13,027 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 12:38:13,028 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:38:13,028 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 12:38:13,028 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1637421914] [2022-11-16 12:38:13,028 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1637421914] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:38:13,029 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:38:13,029 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-16 12:38:13,029 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1066434854] [2022-11-16 12:38:13,029 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:38:13,030 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 12:38:13,030 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 12:38:13,030 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 12:38:13,031 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 12:38:13,031 INFO L87 Difference]: Start difference. First operand 1593 states and 2034 transitions. Second operand has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 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 12:38:14,317 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:38:14,318 INFO L93 Difference]: Finished difference Result 2263 states and 2807 transitions. [2022-11-16 12:38:14,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 12:38:14,321 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 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 11 [2022-11-16 12:38:14,322 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:38:14,331 INFO L225 Difference]: With dead ends: 2263 [2022-11-16 12:38:14,331 INFO L226 Difference]: Without dead ends: 2263 [2022-11-16 12:38:14,332 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-16 12:38:14,333 INFO L413 NwaCegarLoop]: 1452 mSDtfsCounter, 749 mSDsluCounter, 2415 mSDsCounter, 0 mSdLazyCounter, 379 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 760 SdHoareTripleChecker+Valid, 3867 SdHoareTripleChecker+Invalid, 399 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 379 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-11-16 12:38:14,333 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [760 Valid, 3867 Invalid, 399 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 379 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-11-16 12:38:14,337 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2263 states. [2022-11-16 12:38:14,369 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2263 to 1851. [2022-11-16 12:38:14,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1851 states, 1262 states have (on average 1.9904912836767037) internal successors, (2512), 1827 states have internal predecessors, (2512), 20 states have call successors, (20), 4 states have call predecessors, (20), 4 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2022-11-16 12:38:14,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1851 states to 1851 states and 2552 transitions. [2022-11-16 12:38:14,379 INFO L78 Accepts]: Start accepts. Automaton has 1851 states and 2552 transitions. Word has length 11 [2022-11-16 12:38:14,380 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:38:14,380 INFO L495 AbstractCegarLoop]: Abstraction has 1851 states and 2552 transitions. [2022-11-16 12:38:14,380 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 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 12:38:14,380 INFO L276 IsEmpty]: Start isEmpty. Operand 1851 states and 2552 transitions. [2022-11-16 12:38:14,381 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-11-16 12:38:14,381 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:38:14,381 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:38:14,400 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_445b0072-55b1-4ac0-a568-1f3b2dbcbce7/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)] Forceful destruction successful, exit code 0 [2022-11-16 12:38:14,600 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_445b0072-55b1-4ac0-a568-1f3b2dbcbce7/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 12:38:14,600 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK === [alt_mallocErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_mallocErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_freeErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 631 more)] === [2022-11-16 12:38:14,601 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:38:14,601 INFO L85 PathProgramCache]: Analyzing trace with hash 1306900600, now seen corresponding path program 1 times [2022-11-16 12:38:14,601 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 12:38:14,601 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2064333606] [2022-11-16 12:38:14,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:38:14,602 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 12:38:14,602 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_445b0072-55b1-4ac0-a568-1f3b2dbcbce7/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 12:38:14,603 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_445b0072-55b1-4ac0-a568-1f3b2dbcbce7/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 12:38:14,610 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_445b0072-55b1-4ac0-a568-1f3b2dbcbce7/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 12:38:14,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:38:14,866 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-16 12:38:14,869 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:38:14,881 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 12:38:14,882 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 12:38:14,883 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 12:38:14,891 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 39 [2022-11-16 12:38:14,968 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-16 12:38:14,969 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 70 treesize of output 26 [2022-11-16 12:38:14,992 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 12:38:14,992 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:38:14,992 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 12:38:14,993 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2064333606] [2022-11-16 12:38:14,993 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2064333606] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:38:14,993 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:38:14,993 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-16 12:38:14,994 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1085170542] [2022-11-16 12:38:14,994 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:38:14,994 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 12:38:14,994 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 12:38:14,995 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 12:38:14,995 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 12:38:14,995 INFO L87 Difference]: Start difference. First operand 1851 states and 2552 transitions. Second operand has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:38:17,479 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:38:17,479 INFO L93 Difference]: Finished difference Result 1999 states and 2407 transitions. [2022-11-16 12:38:17,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 12:38:17,482 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2022-11-16 12:38:17,482 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:38:17,489 INFO L225 Difference]: With dead ends: 1999 [2022-11-16 12:38:17,489 INFO L226 Difference]: Without dead ends: 1999 [2022-11-16 12:38:17,490 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-16 12:38:17,491 INFO L413 NwaCegarLoop]: 1384 mSDtfsCounter, 502 mSDsluCounter, 2472 mSDsCounter, 0 mSdLazyCounter, 325 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 509 SdHoareTripleChecker+Valid, 3856 SdHoareTripleChecker+Invalid, 326 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 325 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2022-11-16 12:38:17,491 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [509 Valid, 3856 Invalid, 326 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 325 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2022-11-16 12:38:17,494 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1999 states. [2022-11-16 12:38:17,516 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1999 to 1493. [2022-11-16 12:38:17,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1493 states, 906 states have (on average 1.9757174392935983) internal successors, (1790), 1471 states have internal predecessors, (1790), 18 states have call successors, (18), 4 states have call predecessors, (18), 4 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2022-11-16 12:38:17,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1493 states to 1493 states and 1826 transitions. [2022-11-16 12:38:17,525 INFO L78 Accepts]: Start accepts. Automaton has 1493 states and 1826 transitions. Word has length 14 [2022-11-16 12:38:17,525 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:38:17,525 INFO L495 AbstractCegarLoop]: Abstraction has 1493 states and 1826 transitions. [2022-11-16 12:38:17,526 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:38:17,526 INFO L276 IsEmpty]: Start isEmpty. Operand 1493 states and 1826 transitions. [2022-11-16 12:38:17,526 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-11-16 12:38:17,526 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:38:17,527 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:38:17,547 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_445b0072-55b1-4ac0-a568-1f3b2dbcbce7/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 12:38:17,741 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_445b0072-55b1-4ac0-a568-1f3b2dbcbce7/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 12:38:17,742 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr15REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alt_mallocErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_mallocErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_freeErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 631 more)] === [2022-11-16 12:38:17,742 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:38:17,742 INFO L85 PathProgramCache]: Analyzing trace with hash 769788685, now seen corresponding path program 1 times [2022-11-16 12:38:17,742 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 12:38:17,743 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1493521591] [2022-11-16 12:38:17,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:38:17,743 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 12:38:17,743 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_445b0072-55b1-4ac0-a568-1f3b2dbcbce7/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 12:38:17,744 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_445b0072-55b1-4ac0-a568-1f3b2dbcbce7/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 12:38:17,745 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_445b0072-55b1-4ac0-a568-1f3b2dbcbce7/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 12:38:18,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:38:18,013 INFO L263 TraceCheckSpWp]: Trace formula consists of 145 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-16 12:38:18,016 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:38:18,029 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 12:38:18,030 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:38:18,030 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 12:38:18,030 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1493521591] [2022-11-16 12:38:18,030 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1493521591] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:38:18,030 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:38:18,031 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 12:38:18,031 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1511097871] [2022-11-16 12:38:18,031 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:38:18,031 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 12:38:18,032 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 12:38:18,032 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 12:38:18,032 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 12:38:18,033 INFO L87 Difference]: Start difference. First operand 1493 states and 1826 transitions. Second operand has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 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 12:38:18,075 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:38:18,075 INFO L93 Difference]: Finished difference Result 1433 states and 1740 transitions. [2022-11-16 12:38:18,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 12:38:18,076 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 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 19 [2022-11-16 12:38:18,077 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:38:18,082 INFO L225 Difference]: With dead ends: 1433 [2022-11-16 12:38:18,082 INFO L226 Difference]: Without dead ends: 1433 [2022-11-16 12:38:18,082 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 17 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 12:38:18,083 INFO L413 NwaCegarLoop]: 1237 mSDtfsCounter, 1163 mSDsluCounter, 69 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1177 SdHoareTripleChecker+Valid, 1306 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-16 12:38:18,084 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1177 Valid, 1306 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-16 12:38:18,087 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1433 states. [2022-11-16 12:38:18,106 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1433 to 1433. [2022-11-16 12:38:18,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1433 states, 870 states have (on average 1.9586206896551723) internal successors, (1704), 1411 states have internal predecessors, (1704), 18 states have call successors, (18), 4 states have call predecessors, (18), 4 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2022-11-16 12:38:18,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1433 states to 1433 states and 1740 transitions. [2022-11-16 12:38:18,115 INFO L78 Accepts]: Start accepts. Automaton has 1433 states and 1740 transitions. Word has length 19 [2022-11-16 12:38:18,115 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:38:18,116 INFO L495 AbstractCegarLoop]: Abstraction has 1433 states and 1740 transitions. [2022-11-16 12:38:18,116 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 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 12:38:18,116 INFO L276 IsEmpty]: Start isEmpty. Operand 1433 states and 1740 transitions. [2022-11-16 12:38:18,117 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-11-16 12:38:18,117 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:38:18,117 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:38:18,138 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_445b0072-55b1-4ac0-a568-1f3b2dbcbce7/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)] Forceful destruction successful, exit code 0 [2022-11-16 12:38:18,338 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_445b0072-55b1-4ac0-a568-1f3b2dbcbce7/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 12:38:18,338 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr38REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alt_mallocErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_mallocErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_freeErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 631 more)] === [2022-11-16 12:38:18,339 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:38:18,340 INFO L85 PathProgramCache]: Analyzing trace with hash 1032548102, now seen corresponding path program 1 times [2022-11-16 12:38:18,340 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 12:38:18,340 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [400124037] [2022-11-16 12:38:18,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:38:18,341 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 12:38:18,341 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_445b0072-55b1-4ac0-a568-1f3b2dbcbce7/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 12:38:18,342 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_445b0072-55b1-4ac0-a568-1f3b2dbcbce7/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 12:38:18,389 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_445b0072-55b1-4ac0-a568-1f3b2dbcbce7/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 12:38:18,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:38:18,613 INFO L263 TraceCheckSpWp]: Trace formula consists of 148 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-16 12:38:18,615 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:38:18,641 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 12:38:18,641 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:38:18,641 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 12:38:18,642 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [400124037] [2022-11-16 12:38:18,642 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [400124037] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:38:18,642 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:38:18,642 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-16 12:38:18,642 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [885283768] [2022-11-16 12:38:18,643 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:38:18,643 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 12:38:18,644 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 12:38:18,644 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 12:38:18,644 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 12:38:18,645 INFO L87 Difference]: Start difference. First operand 1433 states and 1740 transitions. Second operand has 4 states, 4 states have (on average 5.25) internal successors, (21), 4 states have internal predecessors, (21), 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 12:38:18,748 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:38:18,748 INFO L93 Difference]: Finished difference Result 1405 states and 1684 transitions. [2022-11-16 12:38:18,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 12:38:18,749 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.25) internal successors, (21), 4 states have internal predecessors, (21), 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 21 [2022-11-16 12:38:18,749 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:38:18,753 INFO L225 Difference]: With dead ends: 1405 [2022-11-16 12:38:18,753 INFO L226 Difference]: Without dead ends: 1405 [2022-11-16 12:38:18,753 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-16 12:38:18,754 INFO L413 NwaCegarLoop]: 1192 mSDtfsCounter, 1144 mSDsluCounter, 1254 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1158 SdHoareTripleChecker+Valid, 2446 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-16 12:38:18,754 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1158 Valid, 2446 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-16 12:38:18,757 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1405 states. [2022-11-16 12:38:18,773 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1405 to 1403. [2022-11-16 12:38:18,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1403 states, 854 states have (on average 1.9274004683840749) internal successors, (1646), 1381 states have internal predecessors, (1646), 18 states have call successors, (18), 4 states have call predecessors, (18), 4 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2022-11-16 12:38:18,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1403 states to 1403 states and 1682 transitions. [2022-11-16 12:38:18,779 INFO L78 Accepts]: Start accepts. Automaton has 1403 states and 1682 transitions. Word has length 21 [2022-11-16 12:38:18,780 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:38:18,780 INFO L495 AbstractCegarLoop]: Abstraction has 1403 states and 1682 transitions. [2022-11-16 12:38:18,780 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.25) internal successors, (21), 4 states have internal predecessors, (21), 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 12:38:18,780 INFO L276 IsEmpty]: Start isEmpty. Operand 1403 states and 1682 transitions. [2022-11-16 12:38:18,781 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2022-11-16 12:38:18,781 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:38:18,782 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:38:18,805 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_445b0072-55b1-4ac0-a568-1f3b2dbcbce7/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)] Forceful destruction successful, exit code 0 [2022-11-16 12:38:18,996 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_445b0072-55b1-4ac0-a568-1f3b2dbcbce7/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 12:38:18,997 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr52REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alt_mallocErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_mallocErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_freeErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 631 more)] === [2022-11-16 12:38:19,003 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:38:19,003 INFO L85 PathProgramCache]: Analyzing trace with hash 1673308372, now seen corresponding path program 1 times [2022-11-16 12:38:19,004 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 12:38:19,004 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [890257391] [2022-11-16 12:38:19,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:38:19,004 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 12:38:19,005 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_445b0072-55b1-4ac0-a568-1f3b2dbcbce7/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 12:38:19,006 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_445b0072-55b1-4ac0-a568-1f3b2dbcbce7/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 12:38:19,050 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_445b0072-55b1-4ac0-a568-1f3b2dbcbce7/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 (11)] Waiting until timeout for monitored process [2022-11-16 12:38:19,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:38:19,280 INFO L263 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-16 12:38:19,284 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:38:19,293 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 0 case distinctions, treesize of input 6 treesize of output 7 [2022-11-16 12:38:19,408 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 12:38:19,408 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:38:19,409 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 12:38:19,409 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [890257391] [2022-11-16 12:38:19,409 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [890257391] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:38:19,409 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:38:19,409 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-16 12:38:19,410 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [930521987] [2022-11-16 12:38:19,410 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:38:19,410 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-16 12:38:19,410 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 12:38:19,411 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-16 12:38:19,411 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-16 12:38:19,411 INFO L87 Difference]: Start difference. First operand 1403 states and 1682 transitions. Second operand has 5 states, 4 states have (on average 8.75) internal successors, (35), 5 states have internal predecessors, (35), 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 12:38:25,671 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:38:25,671 INFO L93 Difference]: Finished difference Result 2571 states and 3078 transitions. [2022-11-16 12:38:25,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-16 12:38:25,673 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 8.75) internal successors, (35), 5 states have internal predecessors, (35), 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 35 [2022-11-16 12:38:25,673 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:38:25,681 INFO L225 Difference]: With dead ends: 2571 [2022-11-16 12:38:25,681 INFO L226 Difference]: Without dead ends: 2571 [2022-11-16 12:38:25,681 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-16 12:38:25,682 INFO L413 NwaCegarLoop]: 1147 mSDtfsCounter, 2420 mSDsluCounter, 1584 mSDsCounter, 0 mSdLazyCounter, 2363 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2423 SdHoareTripleChecker+Valid, 2731 SdHoareTripleChecker+Invalid, 2381 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 2363 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.1s IncrementalHoareTripleChecker+Time [2022-11-16 12:38:25,682 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2423 Valid, 2731 Invalid, 2381 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 2363 Invalid, 0 Unknown, 0 Unchecked, 6.1s Time] [2022-11-16 12:38:25,685 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2571 states. [2022-11-16 12:38:25,707 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2571 to 1399. [2022-11-16 12:38:25,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1399 states, 854 states have (on average 1.9180327868852458) internal successors, (1638), 1377 states have internal predecessors, (1638), 18 states have call successors, (18), 4 states have call predecessors, (18), 4 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2022-11-16 12:38:25,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1399 states to 1399 states and 1674 transitions. [2022-11-16 12:38:25,713 INFO L78 Accepts]: Start accepts. Automaton has 1399 states and 1674 transitions. Word has length 35 [2022-11-16 12:38:25,714 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:38:25,714 INFO L495 AbstractCegarLoop]: Abstraction has 1399 states and 1674 transitions. [2022-11-16 12:38:25,714 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 8.75) internal successors, (35), 5 states have internal predecessors, (35), 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 12:38:25,714 INFO L276 IsEmpty]: Start isEmpty. Operand 1399 states and 1674 transitions. [2022-11-16 12:38:25,715 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2022-11-16 12:38:25,715 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:38:25,715 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:38:25,731 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_445b0072-55b1-4ac0-a568-1f3b2dbcbce7/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 (11)] Forceful destruction successful, exit code 0 [2022-11-16 12:38:25,929 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_445b0072-55b1-4ac0-a568-1f3b2dbcbce7/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 12:38:25,930 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr53REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alt_mallocErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_mallocErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_freeErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 631 more)] === [2022-11-16 12:38:25,930 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:38:25,931 INFO L85 PathProgramCache]: Analyzing trace with hash 1673308373, now seen corresponding path program 1 times [2022-11-16 12:38:25,931 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 12:38:25,931 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1488688041] [2022-11-16 12:38:25,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:38:25,931 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 12:38:25,931 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_445b0072-55b1-4ac0-a568-1f3b2dbcbce7/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 12:38:25,932 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_445b0072-55b1-4ac0-a568-1f3b2dbcbce7/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 12:38:25,937 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_445b0072-55b1-4ac0-a568-1f3b2dbcbce7/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 (12)] Waiting until timeout for monitored process [2022-11-16 12:38:26,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:38:26,229 INFO L263 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-16 12:38:26,238 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:38:26,254 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 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-16 12:38:26,522 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 12:38:26,523 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:38:26,523 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 12:38:26,523 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1488688041] [2022-11-16 12:38:26,523 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1488688041] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:38:26,523 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:38:26,523 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-16 12:38:26,524 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [420092195] [2022-11-16 12:38:26,524 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:38:26,524 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-16 12:38:26,524 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 12:38:26,525 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-16 12:38:26,525 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-16 12:38:26,525 INFO L87 Difference]: Start difference. First operand 1399 states and 1674 transitions. Second operand has 5 states, 4 states have (on average 8.75) internal successors, (35), 5 states have internal predecessors, (35), 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 12:38:34,312 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:38:34,312 INFO L93 Difference]: Finished difference Result 2213 states and 2657 transitions. [2022-11-16 12:38:34,313 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-16 12:38:34,314 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 8.75) internal successors, (35), 5 states have internal predecessors, (35), 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 35 [2022-11-16 12:38:34,316 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:38:34,322 INFO L225 Difference]: With dead ends: 2213 [2022-11-16 12:38:34,323 INFO L226 Difference]: Without dead ends: 2213 [2022-11-16 12:38:34,323 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-16 12:38:34,324 INFO L413 NwaCegarLoop]: 1538 mSDtfsCounter, 2195 mSDsluCounter, 1753 mSDsCounter, 0 mSdLazyCounter, 2140 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2195 SdHoareTripleChecker+Valid, 3291 SdHoareTripleChecker+Invalid, 2161 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 2140 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.6s IncrementalHoareTripleChecker+Time [2022-11-16 12:38:34,324 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2195 Valid, 3291 Invalid, 2161 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 2140 Invalid, 0 Unknown, 0 Unchecked, 7.6s Time] [2022-11-16 12:38:34,327 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2213 states. [2022-11-16 12:38:34,347 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2213 to 1395. [2022-11-16 12:38:34,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1395 states, 854 states have (on average 1.9086651053864168) internal successors, (1630), 1373 states have internal predecessors, (1630), 18 states have call successors, (18), 4 states have call predecessors, (18), 4 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2022-11-16 12:38:34,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1395 states to 1395 states and 1666 transitions. [2022-11-16 12:38:34,354 INFO L78 Accepts]: Start accepts. Automaton has 1395 states and 1666 transitions. Word has length 35 [2022-11-16 12:38:34,355 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:38:34,355 INFO L495 AbstractCegarLoop]: Abstraction has 1395 states and 1666 transitions. [2022-11-16 12:38:34,355 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 8.75) internal successors, (35), 5 states have internal predecessors, (35), 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 12:38:34,355 INFO L276 IsEmpty]: Start isEmpty. Operand 1395 states and 1666 transitions. [2022-11-16 12:38:34,356 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2022-11-16 12:38:34,357 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:38:34,357 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:38:34,372 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_445b0072-55b1-4ac0-a568-1f3b2dbcbce7/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 (12)] Forceful destruction successful, exit code 0 [2022-11-16 12:38:34,572 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_445b0072-55b1-4ac0-a568-1f3b2dbcbce7/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 12:38:34,572 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting alt_mallocErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alt_mallocErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_mallocErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_freeErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 631 more)] === [2022-11-16 12:38:34,573 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:38:34,573 INFO L85 PathProgramCache]: Analyzing trace with hash -2063651411, now seen corresponding path program 1 times [2022-11-16 12:38:34,574 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 12:38:34,574 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [604774688] [2022-11-16 12:38:34,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:38:34,574 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 12:38:34,574 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_445b0072-55b1-4ac0-a568-1f3b2dbcbce7/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 12:38:34,576 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_445b0072-55b1-4ac0-a568-1f3b2dbcbce7/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 12:38:34,587 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_445b0072-55b1-4ac0-a568-1f3b2dbcbce7/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 (13)] Waiting until timeout for monitored process [2022-11-16 12:38:34,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:38:34,976 INFO L263 TraceCheckSpWp]: Trace formula consists of 276 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-16 12:38:34,979 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:38:35,052 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 12:38:35,053 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:38:35,053 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 12:38:35,053 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [604774688] [2022-11-16 12:38:35,053 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [604774688] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:38:35,053 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:38:35,053 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-16 12:38:35,054 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [525148528] [2022-11-16 12:38:35,054 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:38:35,054 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 12:38:35,054 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 12:38:35,055 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 12:38:35,055 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 12:38:35,055 INFO L87 Difference]: Start difference. First operand 1395 states and 1666 transitions. Second operand has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:38:35,139 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:38:35,140 INFO L93 Difference]: Finished difference Result 1383 states and 1646 transitions. [2022-11-16 12:38:35,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 12:38:35,141 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 54 [2022-11-16 12:38:35,141 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:38:35,150 INFO L225 Difference]: With dead ends: 1383 [2022-11-16 12:38:35,151 INFO L226 Difference]: Without dead ends: 1383 [2022-11-16 12:38:35,151 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-16 12:38:35,153 INFO L413 NwaCegarLoop]: 1186 mSDtfsCounter, 1113 mSDsluCounter, 1238 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1127 SdHoareTripleChecker+Valid, 2424 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-16 12:38:35,153 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1127 Valid, 2424 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-16 12:38:35,156 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1383 states. [2022-11-16 12:38:35,173 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1383 to 1383. [2022-11-16 12:38:35,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1383 states, 842 states have (on average 1.9121140142517814) internal successors, (1610), 1361 states have internal predecessors, (1610), 18 states have call successors, (18), 4 states have call predecessors, (18), 4 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2022-11-16 12:38:35,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1383 states to 1383 states and 1646 transitions. [2022-11-16 12:38:35,180 INFO L78 Accepts]: Start accepts. Automaton has 1383 states and 1646 transitions. Word has length 54 [2022-11-16 12:38:35,180 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:38:35,180 INFO L495 AbstractCegarLoop]: Abstraction has 1383 states and 1646 transitions. [2022-11-16 12:38:35,181 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:38:35,181 INFO L276 IsEmpty]: Start isEmpty. Operand 1383 states and 1646 transitions. [2022-11-16 12:38:35,182 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-11-16 12:38:35,182 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:38:35,182 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:38:35,206 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_445b0072-55b1-4ac0-a568-1f3b2dbcbce7/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 (13)] Ended with exit code 0 [2022-11-16 12:38:35,399 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_445b0072-55b1-4ac0-a568-1f3b2dbcbce7/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 12:38:35,399 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting alt_mallocErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alt_mallocErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_mallocErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_freeErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 631 more)] === [2022-11-16 12:38:35,400 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:38:35,400 INFO L85 PathProgramCache]: Analyzing trace with hash -202865055, now seen corresponding path program 1 times [2022-11-16 12:38:35,400 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 12:38:35,401 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1385090759] [2022-11-16 12:38:35,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:38:35,401 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 12:38:35,401 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_445b0072-55b1-4ac0-a568-1f3b2dbcbce7/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 12:38:35,403 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_445b0072-55b1-4ac0-a568-1f3b2dbcbce7/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 12:38:35,427 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_445b0072-55b1-4ac0-a568-1f3b2dbcbce7/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 (14)] Waiting until timeout for monitored process [2022-11-16 12:38:35,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:38:35,956 INFO L263 TraceCheckSpWp]: Trace formula consists of 300 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-16 12:38:35,960 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:38:36,005 INFO L321 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2022-11-16 12:38:36,005 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 1 case distinctions, treesize of input 14 treesize of output 24 [2022-11-16 12:38:36,094 INFO L321 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2022-11-16 12:38:36,095 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 1 case distinctions, treesize of input 18 treesize of output 28 [2022-11-16 12:38:36,716 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 12:38:36,717 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:38:36,717 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 12:38:36,717 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1385090759] [2022-11-16 12:38:36,717 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1385090759] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:38:36,718 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:38:36,718 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-16 12:38:36,718 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [552124176] [2022-11-16 12:38:36,718 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:38:36,720 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 12:38:36,720 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 12:38:36,721 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 12:38:36,721 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2022-11-16 12:38:36,722 INFO L87 Difference]: Start difference. First operand 1383 states and 1646 transitions. Second operand has 6 states, 5 states have (on average 12.2) internal successors, (61), 5 states have internal predecessors, (61), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:38:43,139 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:38:43,139 INFO L93 Difference]: Finished difference Result 3211 states and 3774 transitions. [2022-11-16 12:38:43,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 12:38:43,142 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 12.2) internal successors, (61), 5 states have internal predecessors, (61), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 62 [2022-11-16 12:38:43,142 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:38:43,151 INFO L225 Difference]: With dead ends: 3211 [2022-11-16 12:38:43,152 INFO L226 Difference]: Without dead ends: 3211 [2022-11-16 12:38:43,152 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 56 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=20, Invalid=22, Unknown=0, NotChecked=0, Total=42 [2022-11-16 12:38:43,153 INFO L413 NwaCegarLoop]: 1188 mSDtfsCounter, 3291 mSDsluCounter, 1142 mSDsCounter, 0 mSdLazyCounter, 1753 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3291 SdHoareTripleChecker+Valid, 2330 SdHoareTripleChecker+Invalid, 1799 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 1753 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 2 IncrementalHoareTripleChecker+Unchecked, 6.3s IncrementalHoareTripleChecker+Time [2022-11-16 12:38:43,153 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3291 Valid, 2330 Invalid, 1799 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 1753 Invalid, 0 Unknown, 2 Unchecked, 6.3s Time] [2022-11-16 12:38:43,158 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3211 states. [2022-11-16 12:38:43,190 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3211 to 1837. [2022-11-16 12:38:43,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1837 states, 1280 states have (on average 1.8984375) internal successors, (2430), 1802 states have internal predecessors, (2430), 31 states have call successors, (31), 8 states have call predecessors, (31), 7 states have return successors, (31), 28 states have call predecessors, (31), 31 states have call successors, (31) [2022-11-16 12:38:43,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1837 states to 1837 states and 2492 transitions. [2022-11-16 12:38:43,199 INFO L78 Accepts]: Start accepts. Automaton has 1837 states and 2492 transitions. Word has length 62 [2022-11-16 12:38:43,199 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:38:43,199 INFO L495 AbstractCegarLoop]: Abstraction has 1837 states and 2492 transitions. [2022-11-16 12:38:43,200 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 12.2) internal successors, (61), 5 states have internal predecessors, (61), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:38:43,200 INFO L276 IsEmpty]: Start isEmpty. Operand 1837 states and 2492 transitions. [2022-11-16 12:38:43,201 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-11-16 12:38:43,201 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:38:43,201 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:38:43,220 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_445b0072-55b1-4ac0-a568-1f3b2dbcbce7/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 (14)] Forceful destruction successful, exit code 0 [2022-11-16 12:38:43,420 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_445b0072-55b1-4ac0-a568-1f3b2dbcbce7/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 12:38:43,420 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting alt_mallocErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alt_mallocErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_mallocErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_freeErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 631 more)] === [2022-11-16 12:38:43,420 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:38:43,421 INFO L85 PathProgramCache]: Analyzing trace with hash -202865054, now seen corresponding path program 1 times [2022-11-16 12:38:43,421 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 12:38:43,421 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1494023751] [2022-11-16 12:38:43,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:38:43,421 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 12:38:43,422 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_445b0072-55b1-4ac0-a568-1f3b2dbcbce7/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 12:38:43,425 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_445b0072-55b1-4ac0-a568-1f3b2dbcbce7/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 12:38:43,469 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_445b0072-55b1-4ac0-a568-1f3b2dbcbce7/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 (15)] Waiting until timeout for monitored process [2022-11-16 12:38:43,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:38:43,981 INFO L263 TraceCheckSpWp]: Trace formula consists of 300 conjuncts, 18 conjunts are in the unsatisfiable core [2022-11-16 12:38:43,985 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:38:44,046 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:38:44,047 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2022-11-16 12:38:44,146 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-11-16 12:38:44,147 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 1 case distinctions, treesize of input 12 treesize of output 14 [2022-11-16 12:38:45,041 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 12:38:45,041 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:38:45,041 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 12:38:45,041 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1494023751] [2022-11-16 12:38:45,041 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1494023751] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:38:45,041 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:38:45,042 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-16 12:38:45,042 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2053378402] [2022-11-16 12:38:45,042 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:38:45,042 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 12:38:45,042 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 12:38:45,043 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 12:38:45,043 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-11-16 12:38:45,043 INFO L87 Difference]: Start difference. First operand 1837 states and 2492 transitions. Second operand has 6 states, 5 states have (on average 12.2) internal successors, (61), 5 states have internal predecessors, (61), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:38:49,988 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:38:49,988 INFO L93 Difference]: Finished difference Result 1843 states and 2499 transitions. [2022-11-16 12:38:49,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 12:38:49,989 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 12.2) internal successors, (61), 5 states have internal predecessors, (61), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 62 [2022-11-16 12:38:49,989 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:38:49,995 INFO L225 Difference]: With dead ends: 1843 [2022-11-16 12:38:49,995 INFO L226 Difference]: Without dead ends: 1843 [2022-11-16 12:38:49,996 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 56 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2022-11-16 12:38:49,997 INFO L413 NwaCegarLoop]: 1168 mSDtfsCounter, 111 mSDsluCounter, 1228 mSDsCounter, 0 mSdLazyCounter, 1173 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 111 SdHoareTripleChecker+Valid, 2396 SdHoareTripleChecker+Invalid, 1178 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 1173 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.9s IncrementalHoareTripleChecker+Time [2022-11-16 12:38:49,997 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [111 Valid, 2396 Invalid, 1178 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 1173 Invalid, 0 Unknown, 0 Unchecked, 4.9s Time] [2022-11-16 12:38:50,000 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1843 states. [2022-11-16 12:38:50,026 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1843 to 1842. [2022-11-16 12:38:50,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1842 states, 1284 states have (on average 1.895638629283489) internal successors, (2434), 1806 states have internal predecessors, (2434), 32 states have call successors, (32), 9 states have call predecessors, (32), 7 states have return successors, (32), 28 states have call predecessors, (32), 32 states have call successors, (32) [2022-11-16 12:38:50,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1842 states to 1842 states and 2498 transitions. [2022-11-16 12:38:50,035 INFO L78 Accepts]: Start accepts. Automaton has 1842 states and 2498 transitions. Word has length 62 [2022-11-16 12:38:50,036 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:38:50,036 INFO L495 AbstractCegarLoop]: Abstraction has 1842 states and 2498 transitions. [2022-11-16 12:38:50,036 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 12.2) internal successors, (61), 5 states have internal predecessors, (61), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:38:50,036 INFO L276 IsEmpty]: Start isEmpty. Operand 1842 states and 2498 transitions. [2022-11-16 12:38:50,037 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-11-16 12:38:50,038 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:38:50,038 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:38:50,058 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_445b0072-55b1-4ac0-a568-1f3b2dbcbce7/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 (15)] Forceful destruction successful, exit code 0 [2022-11-16 12:38:50,258 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_445b0072-55b1-4ac0-a568-1f3b2dbcbce7/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 12:38:50,258 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK === [alt_mallocErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_mallocErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_freeErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 631 more)] === [2022-11-16 12:38:50,259 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:38:50,259 INFO L85 PathProgramCache]: Analyzing trace with hash -904346310, now seen corresponding path program 1 times [2022-11-16 12:38:50,259 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 12:38:50,260 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [539834665] [2022-11-16 12:38:50,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:38:50,260 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 12:38:50,260 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_445b0072-55b1-4ac0-a568-1f3b2dbcbce7/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 12:38:50,262 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_445b0072-55b1-4ac0-a568-1f3b2dbcbce7/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 12:38:50,308 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_445b0072-55b1-4ac0-a568-1f3b2dbcbce7/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 (16)] Waiting until timeout for monitored process [2022-11-16 12:38:50,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:38:50,734 INFO L263 TraceCheckSpWp]: Trace formula consists of 329 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-16 12:38:50,737 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:38:50,796 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:38:50,797 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:38:50,797 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 12:38:50,797 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [539834665] [2022-11-16 12:38:50,797 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [539834665] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:38:50,798 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:38:50,798 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-16 12:38:50,798 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1594334485] [2022-11-16 12:38:50,798 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:38:50,799 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 12:38:50,799 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 12:38:50,800 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 12:38:50,800 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-16 12:38:50,800 INFO L87 Difference]: Start difference. First operand 1842 states and 2498 transitions. Second operand has 6 states, 6 states have (on average 11.0) internal successors, (66), 4 states have internal predecessors, (66), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:38:50,961 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:38:50,961 INFO L93 Difference]: Finished difference Result 1868 states and 2525 transitions. [2022-11-16 12:38:50,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-16 12:38:50,962 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.0) internal successors, (66), 4 states have internal predecessors, (66), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 68 [2022-11-16 12:38:50,963 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:38:50,969 INFO L225 Difference]: With dead ends: 1868 [2022-11-16 12:38:50,970 INFO L226 Difference]: Without dead ends: 1868 [2022-11-16 12:38:50,970 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 63 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-16 12:38:50,971 INFO L413 NwaCegarLoop]: 1183 mSDtfsCounter, 19 mSDsluCounter, 4722 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 5905 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-16 12:38:50,971 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 5905 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-16 12:38:50,974 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1868 states. [2022-11-16 12:38:51,003 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1868 to 1866. [2022-11-16 12:38:51,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1866 states, 1302 states have (on average 1.8870967741935485) internal successors, (2457), 1826 states have internal predecessors, (2457), 34 states have call successors, (34), 13 states have call predecessors, (34), 11 states have return successors, (34), 30 states have call predecessors, (34), 34 states have call successors, (34) [2022-11-16 12:38:51,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1866 states to 1866 states and 2525 transitions. [2022-11-16 12:38:51,011 INFO L78 Accepts]: Start accepts. Automaton has 1866 states and 2525 transitions. Word has length 68 [2022-11-16 12:38:51,012 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:38:51,012 INFO L495 AbstractCegarLoop]: Abstraction has 1866 states and 2525 transitions. [2022-11-16 12:38:51,012 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.0) internal successors, (66), 4 states have internal predecessors, (66), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:38:51,013 INFO L276 IsEmpty]: Start isEmpty. Operand 1866 states and 2525 transitions. [2022-11-16 12:38:51,013 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-11-16 12:38:51,013 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:38:51,014 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:38:51,040 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_445b0072-55b1-4ac0-a568-1f3b2dbcbce7/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 (16)] Forceful destruction successful, exit code 0 [2022-11-16 12:38:51,230 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_445b0072-55b1-4ac0-a568-1f3b2dbcbce7/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 12:38:51,230 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr70REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alt_mallocErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_mallocErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_freeErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 631 more)] === [2022-11-16 12:38:51,231 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:38:51,231 INFO L85 PathProgramCache]: Analyzing trace with hash -961994179, now seen corresponding path program 1 times [2022-11-16 12:38:51,231 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 12:38:51,231 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2130682856] [2022-11-16 12:38:51,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:38:51,232 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 12:38:51,232 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_445b0072-55b1-4ac0-a568-1f3b2dbcbce7/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 12:38:51,233 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_445b0072-55b1-4ac0-a568-1f3b2dbcbce7/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 12:38:51,234 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_445b0072-55b1-4ac0-a568-1f3b2dbcbce7/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 (17)] Waiting until timeout for monitored process [2022-11-16 12:38:51,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:38:51,706 INFO L263 TraceCheckSpWp]: Trace formula consists of 335 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-16 12:38:51,710 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:38:51,958 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 12:38:51,958 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:38:51,958 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 12:38:51,958 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2130682856] [2022-11-16 12:38:51,958 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2130682856] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:38:51,958 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:38:51,959 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 12:38:51,959 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1850944063] [2022-11-16 12:38:51,959 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:38:51,960 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 12:38:51,960 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 12:38:51,960 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 12:38:51,960 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-16 12:38:51,960 INFO L87 Difference]: Start difference. First operand 1866 states and 2525 transitions. Second operand has 6 states, 6 states have (on average 11.0) internal successors, (66), 4 states have internal predecessors, (66), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-16 12:38:52,267 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:38:52,267 INFO L93 Difference]: Finished difference Result 1878 states and 2539 transitions. [2022-11-16 12:38:52,267 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-16 12:38:52,268 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.0) internal successors, (66), 4 states have internal predecessors, (66), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 68 [2022-11-16 12:38:52,268 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:38:52,287 INFO L225 Difference]: With dead ends: 1878 [2022-11-16 12:38:52,288 INFO L226 Difference]: Without dead ends: 1878 [2022-11-16 12:38:52,288 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 63 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2022-11-16 12:38:52,289 INFO L413 NwaCegarLoop]: 1169 mSDtfsCounter, 23 mSDsluCounter, 3444 mSDsCounter, 0 mSdLazyCounter, 110 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 4613 SdHoareTripleChecker+Invalid, 125 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 110 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-16 12:38:52,289 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 4613 Invalid, 125 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 110 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-16 12:38:52,292 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1878 states. [2022-11-16 12:38:52,344 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1878 to 1869. [2022-11-16 12:38:52,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1869 states, 1304 states have (on average 1.8857361963190185) internal successors, (2459), 1828 states have internal predecessors, (2459), 34 states have call successors, (34), 13 states have call predecessors, (34), 12 states have return successors, (35), 30 states have call predecessors, (35), 34 states have call successors, (35) [2022-11-16 12:38:52,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1869 states to 1869 states and 2528 transitions. [2022-11-16 12:38:52,373 INFO L78 Accepts]: Start accepts. Automaton has 1869 states and 2528 transitions. Word has length 68 [2022-11-16 12:38:52,373 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:38:52,373 INFO L495 AbstractCegarLoop]: Abstraction has 1869 states and 2528 transitions. [2022-11-16 12:38:52,374 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.0) internal successors, (66), 4 states have internal predecessors, (66), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-16 12:38:52,375 INFO L276 IsEmpty]: Start isEmpty. Operand 1869 states and 2528 transitions. [2022-11-16 12:38:52,376 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2022-11-16 12:38:52,376 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:38:52,376 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:38:52,394 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_445b0072-55b1-4ac0-a568-1f3b2dbcbce7/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 (17)] Forceful destruction successful, exit code 0 [2022-11-16 12:38:52,594 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_445b0072-55b1-4ac0-a568-1f3b2dbcbce7/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 12:38:52,594 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr70REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alt_mallocErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_mallocErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_freeErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 631 more)] === [2022-11-16 12:38:52,594 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:38:52,595 INFO L85 PathProgramCache]: Analyzing trace with hash -1684223946, now seen corresponding path program 1 times [2022-11-16 12:38:52,595 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 12:38:52,595 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2018537183] [2022-11-16 12:38:52,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:38:52,595 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 12:38:52,596 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_445b0072-55b1-4ac0-a568-1f3b2dbcbce7/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 12:38:52,597 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_445b0072-55b1-4ac0-a568-1f3b2dbcbce7/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 12:38:52,609 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_445b0072-55b1-4ac0-a568-1f3b2dbcbce7/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 (18)] Waiting until timeout for monitored process [2022-11-16 12:38:53,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:38:53,187 INFO L263 TraceCheckSpWp]: Trace formula consists of 342 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-16 12:38:53,190 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:38:53,195 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 0 case distinctions, treesize of input 6 treesize of output 7 [2022-11-16 12:38:53,436 WARN L855 $PredicateComparison]: unable to prove that (exists ((|alt_malloc_#res.base| (_ BitVec 32))) (= |c_#valid| (store |c_old(#valid)| |alt_malloc_#res.base| (_ bv1 1)))) is different from true [2022-11-16 12:38:53,479 INFO L321 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2022-11-16 12:38:53,480 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 1 case distinctions, treesize of input 14 treesize of output 20 [2022-11-16 12:38:53,496 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 12:38:53,496 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:38:53,496 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 12:38:53,496 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2018537183] [2022-11-16 12:38:53,496 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2018537183] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:38:53,497 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:38:53,497 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 12:38:53,497 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1372310141] [2022-11-16 12:38:53,497 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:38:53,497 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 12:38:53,498 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 12:38:53,498 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 12:38:53,498 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=14, Unknown=1, NotChecked=6, Total=30 [2022-11-16 12:38:53,498 INFO L87 Difference]: Start difference. First operand 1869 states and 2528 transitions. Second operand has 6 states, 5 states have (on average 13.8) internal successors, (69), 6 states have internal predecessors, (69), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-16 12:39:00,533 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:39:00,534 INFO L93 Difference]: Finished difference Result 3193 states and 4238 transitions. [2022-11-16 12:39:00,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-16 12:39:00,535 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 13.8) internal successors, (69), 6 states have internal predecessors, (69), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 73 [2022-11-16 12:39:00,535 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:39:00,543 INFO L225 Difference]: With dead ends: 3193 [2022-11-16 12:39:00,543 INFO L226 Difference]: Without dead ends: 3193 [2022-11-16 12:39:00,544 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 68 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=20, Unknown=1, NotChecked=8, Total=42 [2022-11-16 12:39:00,544 INFO L413 NwaCegarLoop]: 1101 mSDtfsCounter, 1620 mSDsluCounter, 1926 mSDsCounter, 0 mSdLazyCounter, 2738 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1626 SdHoareTripleChecker+Valid, 3027 SdHoareTripleChecker+Invalid, 4371 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 2738 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1612 IncrementalHoareTripleChecker+Unchecked, 6.9s IncrementalHoareTripleChecker+Time [2022-11-16 12:39:00,545 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1626 Valid, 3027 Invalid, 4371 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 2738 Invalid, 0 Unknown, 1612 Unchecked, 6.9s Time] [2022-11-16 12:39:00,549 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3193 states. [2022-11-16 12:39:00,580 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3193 to 1868. [2022-11-16 12:39:00,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1868 states, 1304 states have (on average 1.88420245398773) internal successors, (2457), 1827 states have internal predecessors, (2457), 34 states have call successors, (34), 13 states have call predecessors, (34), 12 states have return successors, (35), 30 states have call predecessors, (35), 34 states have call successors, (35) [2022-11-16 12:39:00,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1868 states to 1868 states and 2526 transitions. [2022-11-16 12:39:00,609 INFO L78 Accepts]: Start accepts. Automaton has 1868 states and 2526 transitions. Word has length 73 [2022-11-16 12:39:00,609 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:39:00,609 INFO L495 AbstractCegarLoop]: Abstraction has 1868 states and 2526 transitions. [2022-11-16 12:39:00,610 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 13.8) internal successors, (69), 6 states have internal predecessors, (69), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-16 12:39:00,610 INFO L276 IsEmpty]: Start isEmpty. Operand 1868 states and 2526 transitions. [2022-11-16 12:39:00,617 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2022-11-16 12:39:00,618 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:39:00,618 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:39:00,637 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_445b0072-55b1-4ac0-a568-1f3b2dbcbce7/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 (18)] Forceful destruction successful, exit code 0 [2022-11-16 12:39:00,836 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_445b0072-55b1-4ac0-a568-1f3b2dbcbce7/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 12:39:00,836 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr71REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alt_mallocErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_mallocErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_freeErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 631 more)] === [2022-11-16 12:39:00,837 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:39:00,837 INFO L85 PathProgramCache]: Analyzing trace with hash -1684223945, now seen corresponding path program 1 times [2022-11-16 12:39:00,837 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 12:39:00,838 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [499337568] [2022-11-16 12:39:00,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:39:00,838 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 12:39:00,838 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_445b0072-55b1-4ac0-a568-1f3b2dbcbce7/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 12:39:00,839 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_445b0072-55b1-4ac0-a568-1f3b2dbcbce7/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 12:39:00,840 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_445b0072-55b1-4ac0-a568-1f3b2dbcbce7/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 (19)] Waiting until timeout for monitored process [2022-11-16 12:39:01,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:39:01,380 INFO L263 TraceCheckSpWp]: Trace formula consists of 342 conjuncts, 16 conjunts are in the unsatisfiable core [2022-11-16 12:39:01,384 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:39:01,407 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 0 case distinctions, treesize of input 6 treesize of output 7 [2022-11-16 12:39:01,416 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 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-16 12:39:02,112 WARN L855 $PredicateComparison]: unable to prove that (exists ((|alt_malloc_#res.base| (_ BitVec 32))) (and (exists ((v_ArrVal_1107 (_ BitVec 32))) (= |c_#length| (store |c_old(#length)| |alt_malloc_#res.base| v_ArrVal_1107))) (= (_ bv0 1) (select |c_old(#valid)| |alt_malloc_#res.base|)))) is different from true [2022-11-16 12:39:02,144 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:39:02,145 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2022-11-16 12:39:02,172 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-16 12:39:02,172 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2022-11-16 12:39:02,200 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 12:39:02,200 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:39:02,201 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 12:39:02,201 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [499337568] [2022-11-16 12:39:02,201 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [499337568] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:39:02,201 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:39:02,202 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-16 12:39:02,205 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2128140236] [2022-11-16 12:39:02,206 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:39:02,206 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-16 12:39:02,206 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 12:39:02,207 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-16 12:39:02,207 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=21, Unknown=1, NotChecked=8, Total=42 [2022-11-16 12:39:02,207 INFO L87 Difference]: Start difference. First operand 1868 states and 2526 transitions. Second operand has 7 states, 6 states have (on average 11.5) internal successors, (69), 6 states have internal predecessors, (69), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-16 12:39:14,198 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:39:14,198 INFO L93 Difference]: Finished difference Result 3264 states and 4363 transitions. [2022-11-16 12:39:14,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-16 12:39:14,199 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 11.5) internal successors, (69), 6 states have internal predecessors, (69), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 73 [2022-11-16 12:39:14,199 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:39:14,207 INFO L225 Difference]: With dead ends: 3264 [2022-11-16 12:39:14,208 INFO L226 Difference]: Without dead ends: 3264 [2022-11-16 12:39:14,208 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 68 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=28, Unknown=1, NotChecked=10, Total=56 [2022-11-16 12:39:14,209 INFO L413 NwaCegarLoop]: 1299 mSDtfsCounter, 2396 mSDsluCounter, 1656 mSDsCounter, 0 mSdLazyCounter, 3959 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2402 SdHoareTripleChecker+Valid, 2955 SdHoareTripleChecker+Invalid, 5893 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 3959 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1903 IncrementalHoareTripleChecker+Unchecked, 11.8s IncrementalHoareTripleChecker+Time [2022-11-16 12:39:14,209 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2402 Valid, 2955 Invalid, 5893 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [31 Valid, 3959 Invalid, 0 Unknown, 1903 Unchecked, 11.8s Time] [2022-11-16 12:39:14,213 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3264 states. [2022-11-16 12:39:14,249 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3264 to 1864. [2022-11-16 12:39:14,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1864 states, 1308 states have (on average 1.8692660550458715) internal successors, (2445), 1823 states have internal predecessors, (2445), 34 states have call successors, (34), 13 states have call predecessors, (34), 12 states have return successors, (35), 30 states have call predecessors, (35), 34 states have call successors, (35) [2022-11-16 12:39:14,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1864 states to 1864 states and 2514 transitions. [2022-11-16 12:39:14,280 INFO L78 Accepts]: Start accepts. Automaton has 1864 states and 2514 transitions. Word has length 73 [2022-11-16 12:39:14,280 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:39:14,281 INFO L495 AbstractCegarLoop]: Abstraction has 1864 states and 2514 transitions. [2022-11-16 12:39:14,281 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 11.5) internal successors, (69), 6 states have internal predecessors, (69), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-16 12:39:14,281 INFO L276 IsEmpty]: Start isEmpty. Operand 1864 states and 2514 transitions. [2022-11-16 12:39:14,282 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2022-11-16 12:39:14,282 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:39:14,282 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:39:14,302 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_445b0072-55b1-4ac0-a568-1f3b2dbcbce7/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 (19)] Forceful destruction successful, exit code 0 [2022-11-16 12:39:14,501 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_445b0072-55b1-4ac0-a568-1f3b2dbcbce7/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 12:39:14,501 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting alt_bzeroErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE === [alt_mallocErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_mallocErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_freeErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 631 more)] === [2022-11-16 12:39:14,502 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:39:14,502 INFO L85 PathProgramCache]: Analyzing trace with hash 1696557543, now seen corresponding path program 1 times [2022-11-16 12:39:14,503 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 12:39:14,503 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [26530436] [2022-11-16 12:39:14,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:39:14,503 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 12:39:14,503 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_445b0072-55b1-4ac0-a568-1f3b2dbcbce7/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 12:39:14,505 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_445b0072-55b1-4ac0-a568-1f3b2dbcbce7/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 12:39:14,546 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_445b0072-55b1-4ac0-a568-1f3b2dbcbce7/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 (20)] Waiting until timeout for monitored process [2022-11-16 12:39:14,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:39:14,987 INFO L263 TraceCheckSpWp]: Trace formula consists of 388 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-16 12:39:14,989 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:39:15,002 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 0 case distinctions, treesize of input 6 treesize of output 7 [2022-11-16 12:39:15,032 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-16 12:39:15,074 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2022-11-16 12:39:15,126 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 12:39:15,126 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:39:15,127 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 12:39:15,127 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [26530436] [2022-11-16 12:39:15,127 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [26530436] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:39:15,127 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:39:15,127 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-16 12:39:15,128 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [710728626] [2022-11-16 12:39:15,128 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:39:15,128 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-16 12:39:15,129 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 12:39:15,129 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-16 12:39:15,129 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-16 12:39:15,130 INFO L87 Difference]: Start difference. First operand 1864 states and 2514 transitions. Second operand has 8 states, 6 states have (on average 12.5) internal successors, (75), 6 states have internal predecessors, (75), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-16 12:39:22,361 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:39:22,362 INFO L93 Difference]: Finished difference Result 1879 states and 2530 transitions. [2022-11-16 12:39:22,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-16 12:39:22,366 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 6 states have (on average 12.5) internal successors, (75), 6 states have internal predecessors, (75), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 80 [2022-11-16 12:39:22,367 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:39:22,371 INFO L225 Difference]: With dead ends: 1879 [2022-11-16 12:39:22,371 INFO L226 Difference]: Without dead ends: 1879 [2022-11-16 12:39:22,372 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 73 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2022-11-16 12:39:22,372 INFO L413 NwaCegarLoop]: 1169 mSDtfsCounter, 23 mSDsluCounter, 3748 mSDsCounter, 0 mSdLazyCounter, 3317 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 4917 SdHoareTripleChecker+Invalid, 3319 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 3317 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.1s IncrementalHoareTripleChecker+Time [2022-11-16 12:39:22,373 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 4917 Invalid, 3319 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 3317 Invalid, 0 Unknown, 0 Unchecked, 7.1s Time] [2022-11-16 12:39:22,376 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1879 states. [2022-11-16 12:39:22,398 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1879 to 1878. [2022-11-16 12:39:22,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1878 states, 1320 states have (on average 1.8643939393939395) internal successors, (2461), 1835 states have internal predecessors, (2461), 34 states have call successors, (34), 15 states have call predecessors, (34), 14 states have return successors, (35), 30 states have call predecessors, (35), 34 states have call successors, (35) [2022-11-16 12:39:22,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1878 states to 1878 states and 2530 transitions. [2022-11-16 12:39:22,405 INFO L78 Accepts]: Start accepts. Automaton has 1878 states and 2530 transitions. Word has length 80 [2022-11-16 12:39:22,406 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:39:22,406 INFO L495 AbstractCegarLoop]: Abstraction has 1878 states and 2530 transitions. [2022-11-16 12:39:22,406 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 6 states have (on average 12.5) internal successors, (75), 6 states have internal predecessors, (75), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-16 12:39:22,407 INFO L276 IsEmpty]: Start isEmpty. Operand 1878 states and 2530 transitions. [2022-11-16 12:39:22,407 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2022-11-16 12:39:22,408 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:39:22,408 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:39:22,430 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_445b0072-55b1-4ac0-a568-1f3b2dbcbce7/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 (20)] Forceful destruction successful, exit code 0 [2022-11-16 12:39:22,626 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_445b0072-55b1-4ac0-a568-1f3b2dbcbce7/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 12:39:22,626 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting alt_bzeroErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE === [alt_mallocErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_mallocErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_freeErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 631 more)] === [2022-11-16 12:39:22,627 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:39:22,627 INFO L85 PathProgramCache]: Analyzing trace with hash 1053676349, now seen corresponding path program 1 times [2022-11-16 12:39:22,628 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 12:39:22,628 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1722784956] [2022-11-16 12:39:22,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:39:22,628 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 12:39:22,628 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_445b0072-55b1-4ac0-a568-1f3b2dbcbce7/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 12:39:22,630 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_445b0072-55b1-4ac0-a568-1f3b2dbcbce7/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 12:39:22,674 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_445b0072-55b1-4ac0-a568-1f3b2dbcbce7/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 (21)] Waiting until timeout for monitored process [2022-11-16 12:39:23,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:39:23,158 INFO L263 TraceCheckSpWp]: Trace formula consists of 389 conjuncts, 25 conjunts are in the unsatisfiable core [2022-11-16 12:39:23,161 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:39:23,191 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 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-16 12:39:23,253 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-16 12:39:23,264 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-16 12:39:23,339 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 9 [2022-11-16 12:39:23,347 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2022-11-16 12:39:23,485 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 12:39:23,486 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:39:23,486 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 12:39:23,486 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1722784956] [2022-11-16 12:39:23,486 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1722784956] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:39:23,486 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:39:23,486 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-16 12:39:23,487 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1984725238] [2022-11-16 12:39:23,487 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:39:23,487 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-16 12:39:23,487 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 12:39:23,488 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-16 12:39:23,488 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-11-16 12:39:23,488 INFO L87 Difference]: Start difference. First operand 1878 states and 2530 transitions. Second operand has 9 states, 7 states have (on average 10.857142857142858) internal successors, (76), 7 states have internal predecessors, (76), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-16 12:39:33,539 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:39:33,540 INFO L93 Difference]: Finished difference Result 1878 states and 2528 transitions. [2022-11-16 12:39:33,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-16 12:39:33,541 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 7 states have (on average 10.857142857142858) internal successors, (76), 7 states have internal predecessors, (76), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 81 [2022-11-16 12:39:33,541 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:39:33,545 INFO L225 Difference]: With dead ends: 1878 [2022-11-16 12:39:33,546 INFO L226 Difference]: Without dead ends: 1878 [2022-11-16 12:39:33,546 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 73 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2022-11-16 12:39:33,547 INFO L413 NwaCegarLoop]: 1164 mSDtfsCounter, 19 mSDsluCounter, 4769 mSDsCounter, 0 mSdLazyCounter, 3477 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 5933 SdHoareTripleChecker+Invalid, 3478 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3477 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.8s IncrementalHoareTripleChecker+Time [2022-11-16 12:39:33,547 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 5933 Invalid, 3478 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3477 Invalid, 0 Unknown, 0 Unchecked, 9.8s Time] [2022-11-16 12:39:33,550 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1878 states. [2022-11-16 12:39:33,574 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1878 to 1878. [2022-11-16 12:39:33,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1878 states, 1320 states have (on average 1.8628787878787878) internal successors, (2459), 1835 states have internal predecessors, (2459), 34 states have call successors, (34), 15 states have call predecessors, (34), 14 states have return successors, (35), 30 states have call predecessors, (35), 34 states have call successors, (35) [2022-11-16 12:39:33,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1878 states to 1878 states and 2528 transitions. [2022-11-16 12:39:33,581 INFO L78 Accepts]: Start accepts. Automaton has 1878 states and 2528 transitions. Word has length 81 [2022-11-16 12:39:33,582 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:39:33,582 INFO L495 AbstractCegarLoop]: Abstraction has 1878 states and 2528 transitions. [2022-11-16 12:39:33,582 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 7 states have (on average 10.857142857142858) internal successors, (76), 7 states have internal predecessors, (76), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-16 12:39:33,583 INFO L276 IsEmpty]: Start isEmpty. Operand 1878 states and 2528 transitions. [2022-11-16 12:39:33,583 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2022-11-16 12:39:33,584 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:39:33,584 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:39:33,612 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_445b0072-55b1-4ac0-a568-1f3b2dbcbce7/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 (21)] Forceful destruction successful, exit code 0 [2022-11-16 12:39:33,802 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_445b0072-55b1-4ac0-a568-1f3b2dbcbce7/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 12:39:33,802 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr78REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alt_mallocErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_mallocErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_freeErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 631 more)] === [2022-11-16 12:39:33,802 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:39:33,802 INFO L85 PathProgramCache]: Analyzing trace with hash 491350102, now seen corresponding path program 1 times [2022-11-16 12:39:33,803 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 12:39:33,803 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1599116884] [2022-11-16 12:39:33,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:39:33,803 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 12:39:33,804 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_445b0072-55b1-4ac0-a568-1f3b2dbcbce7/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 12:39:33,805 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_445b0072-55b1-4ac0-a568-1f3b2dbcbce7/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 12:39:33,819 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_445b0072-55b1-4ac0-a568-1f3b2dbcbce7/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 (22)] Waiting until timeout for monitored process [2022-11-16 12:39:34,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:39:34,336 INFO L263 TraceCheckSpWp]: Trace formula consists of 406 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-16 12:39:34,339 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:39:34,383 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 12:39:34,384 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:39:34,384 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 12:39:34,384 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1599116884] [2022-11-16 12:39:34,384 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1599116884] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:39:34,384 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:39:34,384 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 12:39:34,384 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1957045239] [2022-11-16 12:39:34,385 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:39:34,385 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-16 12:39:34,385 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 12:39:34,386 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-16 12:39:34,386 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-16 12:39:34,386 INFO L87 Difference]: Start difference. First operand 1878 states and 2528 transitions. Second operand has 5 states, 5 states have (on average 16.4) internal successors, (82), 5 states have internal predecessors, (82), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-16 12:39:34,491 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:39:34,491 INFO L93 Difference]: Finished difference Result 1894 states and 2546 transitions. [2022-11-16 12:39:34,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 12:39:34,493 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.4) internal successors, (82), 5 states have internal predecessors, (82), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 88 [2022-11-16 12:39:34,493 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:39:34,498 INFO L225 Difference]: With dead ends: 1894 [2022-11-16 12:39:34,498 INFO L226 Difference]: Without dead ends: 1888 [2022-11-16 12:39:34,498 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 84 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-11-16 12:39:34,499 INFO L413 NwaCegarLoop]: 1172 mSDtfsCounter, 11 mSDsluCounter, 3500 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 4672 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-16 12:39:34,499 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 4672 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-16 12:39:34,502 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1888 states. [2022-11-16 12:39:34,524 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1888 to 1888. [2022-11-16 12:39:34,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1888 states, 1328 states have (on average 1.8591867469879517) internal successors, (2469), 1845 states have internal predecessors, (2469), 34 states have call successors, (34), 15 states have call predecessors, (34), 16 states have return successors, (37), 30 states have call predecessors, (37), 34 states have call successors, (37) [2022-11-16 12:39:34,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1888 states to 1888 states and 2540 transitions. [2022-11-16 12:39:34,531 INFO L78 Accepts]: Start accepts. Automaton has 1888 states and 2540 transitions. Word has length 88 [2022-11-16 12:39:34,532 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:39:34,532 INFO L495 AbstractCegarLoop]: Abstraction has 1888 states and 2540 transitions. [2022-11-16 12:39:34,532 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.4) internal successors, (82), 5 states have internal predecessors, (82), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-16 12:39:34,533 INFO L276 IsEmpty]: Start isEmpty. Operand 1888 states and 2540 transitions. [2022-11-16 12:39:34,533 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2022-11-16 12:39:34,534 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:39:34,534 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:39:34,553 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_445b0072-55b1-4ac0-a568-1f3b2dbcbce7/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 (22)] Forceful destruction successful, exit code 0 [2022-11-16 12:39:34,752 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_445b0072-55b1-4ac0-a568-1f3b2dbcbce7/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 12:39:34,753 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr78REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alt_mallocErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_mallocErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_freeErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 631 more)] === [2022-11-16 12:39:34,753 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:39:34,753 INFO L85 PathProgramCache]: Analyzing trace with hash -385822936, now seen corresponding path program 1 times [2022-11-16 12:39:34,754 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 12:39:34,754 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [466307359] [2022-11-16 12:39:34,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:39:34,754 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 12:39:34,755 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_445b0072-55b1-4ac0-a568-1f3b2dbcbce7/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 12:39:34,756 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_445b0072-55b1-4ac0-a568-1f3b2dbcbce7/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 12:39:34,789 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_445b0072-55b1-4ac0-a568-1f3b2dbcbce7/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 (23)] Waiting until timeout for monitored process [2022-11-16 12:39:35,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:39:35,302 INFO L263 TraceCheckSpWp]: Trace formula consists of 417 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-16 12:39:35,305 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:39:35,380 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 12:39:35,380 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:39:35,591 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 12:39:35,591 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 12:39:35,591 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [466307359] [2022-11-16 12:39:35,591 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [466307359] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 12:39:35,592 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-16 12:39:35,592 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2022-11-16 12:39:35,592 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1870049477] [2022-11-16 12:39:35,592 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-16 12:39:35,593 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-16 12:39:35,593 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 12:39:35,594 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-16 12:39:35,594 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2022-11-16 12:39:35,594 INFO L87 Difference]: Start difference. First operand 1888 states and 2540 transitions. Second operand has 10 states, 10 states have (on average 9.0) internal successors, (90), 10 states have internal predecessors, (90), 1 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2022-11-16 12:39:35,993 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:39:35,993 INFO L93 Difference]: Finished difference Result 1914 states and 2570 transitions. [2022-11-16 12:39:35,995 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-16 12:39:35,995 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 9.0) internal successors, (90), 10 states have internal predecessors, (90), 1 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) Word has length 89 [2022-11-16 12:39:35,998 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:39:36,003 INFO L225 Difference]: With dead ends: 1914 [2022-11-16 12:39:36,005 INFO L226 Difference]: Without dead ends: 1902 [2022-11-16 12:39:36,005 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 183 GetRequests, 168 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=106, Invalid=166, Unknown=0, NotChecked=0, Total=272 [2022-11-16 12:39:36,006 INFO L413 NwaCegarLoop]: 1175 mSDtfsCounter, 45 mSDsluCounter, 7006 mSDsCounter, 0 mSdLazyCounter, 88 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 8181 SdHoareTripleChecker+Invalid, 102 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 88 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-16 12:39:36,006 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [45 Valid, 8181 Invalid, 102 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 88 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-16 12:39:36,009 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1902 states. [2022-11-16 12:39:36,033 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1902 to 1896. [2022-11-16 12:39:36,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1896 states, 1336 states have (on average 1.8555389221556886) internal successors, (2479), 1853 states have internal predecessors, (2479), 34 states have call successors, (34), 15 states have call predecessors, (34), 16 states have return successors, (37), 30 states have call predecessors, (37), 34 states have call successors, (37) [2022-11-16 12:39:36,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1896 states to 1896 states and 2550 transitions. [2022-11-16 12:39:36,040 INFO L78 Accepts]: Start accepts. Automaton has 1896 states and 2550 transitions. Word has length 89 [2022-11-16 12:39:36,041 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:39:36,041 INFO L495 AbstractCegarLoop]: Abstraction has 1896 states and 2550 transitions. [2022-11-16 12:39:36,041 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.0) internal successors, (90), 10 states have internal predecessors, (90), 1 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2022-11-16 12:39:36,041 INFO L276 IsEmpty]: Start isEmpty. Operand 1896 states and 2550 transitions. [2022-11-16 12:39:36,042 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2022-11-16 12:39:36,042 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:39:36,043 INFO L195 NwaCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:39:36,067 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_445b0072-55b1-4ac0-a568-1f3b2dbcbce7/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 (23)] Forceful destruction successful, exit code 0 [2022-11-16 12:39:36,258 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_445b0072-55b1-4ac0-a568-1f3b2dbcbce7/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 12:39:36,258 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr78REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alt_mallocErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_mallocErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_freeErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 631 more)] === [2022-11-16 12:39:36,258 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:39:36,258 INFO L85 PathProgramCache]: Analyzing trace with hash 55938262, now seen corresponding path program 2 times [2022-11-16 12:39:36,259 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 12:39:36,259 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1773969339] [2022-11-16 12:39:36,259 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-16 12:39:36,260 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 12:39:36,260 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_445b0072-55b1-4ac0-a568-1f3b2dbcbce7/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 12:39:36,261 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_445b0072-55b1-4ac0-a568-1f3b2dbcbce7/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 12:39:36,305 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_445b0072-55b1-4ac0-a568-1f3b2dbcbce7/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 (24)] Waiting until timeout for monitored process [2022-11-16 12:39:37,160 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-16 12:39:37,160 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 12:39:37,186 INFO L263 TraceCheckSpWp]: Trace formula consists of 450 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-16 12:39:37,188 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:39:37,343 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:39:37,343 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:39:37,773 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:39:37,773 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 12:39:37,774 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1773969339] [2022-11-16 12:39:37,774 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1773969339] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 12:39:37,774 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-16 12:39:37,774 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 16 [2022-11-16 12:39:37,775 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [985202744] [2022-11-16 12:39:37,775 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-16 12:39:37,775 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-11-16 12:39:37,775 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 12:39:37,776 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-11-16 12:39:37,776 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=162, Unknown=0, NotChecked=0, Total=240 [2022-11-16 12:39:37,777 INFO L87 Difference]: Start difference. First operand 1896 states and 2550 transitions. Second operand has 16 states, 16 states have (on average 6.0) internal successors, (96), 16 states have internal predecessors, (96), 1 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2022-11-16 12:39:39,028 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:39:39,029 INFO L93 Difference]: Finished difference Result 1950 states and 2618 transitions. [2022-11-16 12:39:39,030 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2022-11-16 12:39:39,030 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 6.0) internal successors, (96), 16 states have internal predecessors, (96), 1 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) Word has length 92 [2022-11-16 12:39:39,030 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:39:39,039 INFO L225 Difference]: With dead ends: 1950 [2022-11-16 12:39:39,039 INFO L226 Difference]: Without dead ends: 1938 [2022-11-16 12:39:39,040 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 198 GetRequests, 168 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 112 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=343, Invalid=649, Unknown=0, NotChecked=0, Total=992 [2022-11-16 12:39:39,040 INFO L413 NwaCegarLoop]: 1181 mSDtfsCounter, 98 mSDsluCounter, 9384 mSDsCounter, 0 mSdLazyCounter, 214 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 98 SdHoareTripleChecker+Valid, 10565 SdHoareTripleChecker+Invalid, 246 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 214 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-16 12:39:39,041 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [98 Valid, 10565 Invalid, 246 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 214 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-16 12:39:39,044 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1938 states. [2022-11-16 12:39:39,069 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1938 to 1914. [2022-11-16 12:39:39,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1914 states, 1354 states have (on average 1.8485967503692762) internal successors, (2503), 1871 states have internal predecessors, (2503), 34 states have call successors, (34), 15 states have call predecessors, (34), 16 states have return successors, (37), 30 states have call predecessors, (37), 34 states have call successors, (37) [2022-11-16 12:39:39,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1914 states to 1914 states and 2574 transitions. [2022-11-16 12:39:39,076 INFO L78 Accepts]: Start accepts. Automaton has 1914 states and 2574 transitions. Word has length 92 [2022-11-16 12:39:39,076 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:39:39,077 INFO L495 AbstractCegarLoop]: Abstraction has 1914 states and 2574 transitions. [2022-11-16 12:39:39,077 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 6.0) internal successors, (96), 16 states have internal predecessors, (96), 1 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2022-11-16 12:39:39,077 INFO L276 IsEmpty]: Start isEmpty. Operand 1914 states and 2574 transitions. [2022-11-16 12:39:39,078 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2022-11-16 12:39:39,078 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:39:39,078 INFO L195 NwaCegarLoop]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:39:39,106 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_445b0072-55b1-4ac0-a568-1f3b2dbcbce7/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 (24)] Forceful destruction successful, exit code 0 [2022-11-16 12:39:39,294 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_445b0072-55b1-4ac0-a568-1f3b2dbcbce7/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 12:39:39,294 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr78REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alt_mallocErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_mallocErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_freeErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 631 more)] === [2022-11-16 12:39:39,294 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:39:39,294 INFO L85 PathProgramCache]: Analyzing trace with hash 675941270, now seen corresponding path program 3 times [2022-11-16 12:39:39,295 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 12:39:39,295 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [249255523] [2022-11-16 12:39:39,295 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-16 12:39:39,296 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 12:39:39,296 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_445b0072-55b1-4ac0-a568-1f3b2dbcbce7/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 12:39:39,297 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_445b0072-55b1-4ac0-a568-1f3b2dbcbce7/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 12:39:39,333 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_445b0072-55b1-4ac0-a568-1f3b2dbcbce7/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 (25)] Waiting until timeout for monitored process [2022-11-16 12:39:40,555 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2022-11-16 12:39:40,556 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 12:39:40,586 INFO L263 TraceCheckSpWp]: Trace formula consists of 516 conjuncts, 16 conjunts are in the unsatisfiable core [2022-11-16 12:39:40,589 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:39:40,958 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:39:40,959 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:39:42,436 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:39:42,436 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 12:39:42,437 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [249255523] [2022-11-16 12:39:42,437 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [249255523] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 12:39:42,437 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-16 12:39:42,437 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 28 [2022-11-16 12:39:42,437 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [583756509] [2022-11-16 12:39:42,438 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-16 12:39:42,438 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-11-16 12:39:42,439 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 12:39:42,439 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-11-16 12:39:42,440 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=222, Invalid=534, Unknown=0, NotChecked=0, Total=756 [2022-11-16 12:39:42,440 INFO L87 Difference]: Start difference. First operand 1914 states and 2574 transitions. Second operand has 28 states, 28 states have (on average 3.857142857142857) internal successors, (108), 28 states have internal predecessors, (108), 1 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2022-11-16 12:39:48,512 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:39:48,512 INFO L93 Difference]: Finished difference Result 2022 states and 2722 transitions. [2022-11-16 12:39:48,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2022-11-16 12:39:48,513 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 3.857142857142857) internal successors, (108), 28 states have internal predecessors, (108), 1 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) Word has length 98 [2022-11-16 12:39:48,514 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:39:48,518 INFO L225 Difference]: With dead ends: 2022 [2022-11-16 12:39:48,518 INFO L226 Difference]: Without dead ends: 2004 [2022-11-16 12:39:48,519 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 219 GetRequests, 168 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 341 ImplicationChecksByTransitivity, 5.2s TimeCoverageRelationStatistics Valid=924, Invalid=1832, Unknown=0, NotChecked=0, Total=2756 [2022-11-16 12:39:48,520 INFO L413 NwaCegarLoop]: 1193 mSDtfsCounter, 296 mSDsluCounter, 15414 mSDsCounter, 0 mSdLazyCounter, 755 mSolverCounterSat, 114 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 296 SdHoareTripleChecker+Valid, 16607 SdHoareTripleChecker+Invalid, 869 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 114 IncrementalHoareTripleChecker+Valid, 755 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2022-11-16 12:39:48,521 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [296 Valid, 16607 Invalid, 869 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [114 Valid, 755 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2022-11-16 12:39:48,523 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2004 states. [2022-11-16 12:39:48,549 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2004 to 1950. [2022-11-16 12:39:48,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1950 states, 1390 states have (on average 1.8338129496402877) internal successors, (2549), 1907 states have internal predecessors, (2549), 34 states have call successors, (34), 15 states have call predecessors, (34), 16 states have return successors, (37), 30 states have call predecessors, (37), 34 states have call successors, (37) [2022-11-16 12:39:48,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1950 states to 1950 states and 2620 transitions. [2022-11-16 12:39:48,556 INFO L78 Accepts]: Start accepts. Automaton has 1950 states and 2620 transitions. Word has length 98 [2022-11-16 12:39:48,557 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:39:48,557 INFO L495 AbstractCegarLoop]: Abstraction has 1950 states and 2620 transitions. [2022-11-16 12:39:48,557 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 3.857142857142857) internal successors, (108), 28 states have internal predecessors, (108), 1 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2022-11-16 12:39:48,557 INFO L276 IsEmpty]: Start isEmpty. Operand 1950 states and 2620 transitions. [2022-11-16 12:39:48,558 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2022-11-16 12:39:48,559 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:39:48,559 INFO L195 NwaCegarLoop]: trace histogram [22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:39:48,587 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_445b0072-55b1-4ac0-a568-1f3b2dbcbce7/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 (25)] Ended with exit code 0 [2022-11-16 12:39:48,774 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_445b0072-55b1-4ac0-a568-1f3b2dbcbce7/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 12:39:48,774 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr78REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alt_mallocErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_mallocErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_freeErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 631 more)] === [2022-11-16 12:39:48,774 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:39:48,774 INFO L85 PathProgramCache]: Analyzing trace with hash 2055264534, now seen corresponding path program 4 times [2022-11-16 12:39:48,775 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 12:39:48,775 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [180593169] [2022-11-16 12:39:48,776 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-16 12:39:48,776 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 12:39:48,776 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_445b0072-55b1-4ac0-a568-1f3b2dbcbce7/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 12:39:48,778 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_445b0072-55b1-4ac0-a568-1f3b2dbcbce7/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 12:39:48,786 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_445b0072-55b1-4ac0-a568-1f3b2dbcbce7/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 (26)] Waiting until timeout for monitored process [2022-11-16 12:39:49,413 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-16 12:39:49,413 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 12:39:49,438 INFO L263 TraceCheckSpWp]: Trace formula consists of 648 conjuncts, 27 conjunts are in the unsatisfiable core [2022-11-16 12:39:49,441 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:39:50,436 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:39:50,437 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:39:53,741 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:39:53,741 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 12:39:53,742 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [180593169] [2022-11-16 12:39:53,742 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [180593169] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 12:39:53,742 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-16 12:39:53,742 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 27] total 52 [2022-11-16 12:39:53,742 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [304336911] [2022-11-16 12:39:53,743 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-16 12:39:53,743 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 52 states [2022-11-16 12:39:53,744 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 12:39:53,744 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2022-11-16 12:39:53,745 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=725, Invalid=1927, Unknown=0, NotChecked=0, Total=2652 [2022-11-16 12:39:53,746 INFO L87 Difference]: Start difference. First operand 1950 states and 2620 transitions. Second operand has 52 states, 52 states have (on average 2.5384615384615383) internal successors, (132), 52 states have internal predecessors, (132), 1 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2022-11-16 12:40:10,530 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:40:10,530 INFO L93 Difference]: Finished difference Result 2156 states and 2890 transitions. [2022-11-16 12:40:10,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 94 states. [2022-11-16 12:40:10,531 INFO L78 Accepts]: Start accepts. Automaton has has 52 states, 52 states have (on average 2.5384615384615383) internal successors, (132), 52 states have internal predecessors, (132), 1 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) Word has length 110 [2022-11-16 12:40:10,532 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:40:10,535 INFO L225 Difference]: With dead ends: 2156 [2022-11-16 12:40:10,535 INFO L226 Difference]: Without dead ends: 2144 [2022-11-16 12:40:10,539 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 285 GetRequests, 168 SyntacticMatches, 0 SemanticMatches, 117 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1902 ImplicationChecksByTransitivity, 14.2s TimeCoverageRelationStatistics Valid=4121, Invalid=9921, Unknown=0, NotChecked=0, Total=14042 [2022-11-16 12:40:10,539 INFO L413 NwaCegarLoop]: 1215 mSDtfsCounter, 503 mSDsluCounter, 31354 mSDsCounter, 0 mSdLazyCounter, 2469 mSolverCounterSat, 344 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 503 SdHoareTripleChecker+Valid, 32569 SdHoareTripleChecker+Invalid, 2813 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 344 IncrementalHoareTripleChecker+Valid, 2469 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.8s IncrementalHoareTripleChecker+Time [2022-11-16 12:40:10,539 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [503 Valid, 32569 Invalid, 2813 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [344 Valid, 2469 Invalid, 0 Unknown, 0 Unchecked, 5.8s Time] [2022-11-16 12:40:10,541 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2144 states. [2022-11-16 12:40:10,567 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2144 to 2018. [2022-11-16 12:40:10,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2018 states, 1458 states have (on average 1.8113854595336076) internal successors, (2641), 1975 states have internal predecessors, (2641), 34 states have call successors, (34), 15 states have call predecessors, (34), 16 states have return successors, (37), 30 states have call predecessors, (37), 34 states have call successors, (37) [2022-11-16 12:40:10,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2018 states to 2018 states and 2712 transitions. [2022-11-16 12:40:10,574 INFO L78 Accepts]: Start accepts. Automaton has 2018 states and 2712 transitions. Word has length 110 [2022-11-16 12:40:10,574 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:40:10,574 INFO L495 AbstractCegarLoop]: Abstraction has 2018 states and 2712 transitions. [2022-11-16 12:40:10,575 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 52 states, 52 states have (on average 2.5384615384615383) internal successors, (132), 52 states have internal predecessors, (132), 1 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2022-11-16 12:40:10,575 INFO L276 IsEmpty]: Start isEmpty. Operand 2018 states and 2712 transitions. [2022-11-16 12:40:10,576 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2022-11-16 12:40:10,576 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:40:10,577 INFO L195 NwaCegarLoop]: trace histogram [44, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:40:10,601 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_445b0072-55b1-4ac0-a568-1f3b2dbcbce7/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 (26)] Forceful destruction successful, exit code 0 [2022-11-16 12:40:10,796 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_445b0072-55b1-4ac0-a568-1f3b2dbcbce7/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 12:40:10,796 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr78REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alt_mallocErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_mallocErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_freeErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 631 more)] === [2022-11-16 12:40:10,796 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:40:10,797 INFO L85 PathProgramCache]: Analyzing trace with hash 1555511766, now seen corresponding path program 5 times [2022-11-16 12:40:10,797 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 12:40:10,798 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [469467424] [2022-11-16 12:40:10,798 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-11-16 12:40:10,798 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 12:40:10,798 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_445b0072-55b1-4ac0-a568-1f3b2dbcbce7/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 12:40:10,799 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_445b0072-55b1-4ac0-a568-1f3b2dbcbce7/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 12:40:10,800 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_445b0072-55b1-4ac0-a568-1f3b2dbcbce7/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 (27)] Waiting until timeout for monitored process [2022-11-16 12:40:12,553 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 23 check-sat command(s) [2022-11-16 12:40:12,553 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 12:40:12,602 INFO L263 TraceCheckSpWp]: Trace formula consists of 890 conjuncts, 65 conjunts are in the unsatisfiable core [2022-11-16 12:40:12,624 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:40:12,631 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 0 case distinctions, treesize of input 6 treesize of output 7 [2022-11-16 12:40:12,842 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-11-16 12:40:12,843 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 19 treesize of output 27 [2022-11-16 12:40:12,897 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-16 12:40:13,069 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 12 [2022-11-16 12:40:16,461 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-11-16 12:40:16,461 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 36 treesize of output 37 [2022-11-16 12:40:16,520 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 15 [2022-11-16 12:40:16,581 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 87 refuted. 0 times theorem prover too weak. 903 trivial. 0 not checked. [2022-11-16 12:40:16,581 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:40:17,058 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_2663 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (_ bv1 1) (select |c_#valid| (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem73#1.base| v_ArrVal_2663) |c_ULTIMATE.start_main_~user~0#1.base|) (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|)))))) is different from false [2022-11-16 12:40:17,061 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 12:40:17,061 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [469467424] [2022-11-16 12:40:17,061 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [469467424] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:40:17,061 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1925722101] [2022-11-16 12:40:17,061 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-11-16 12:40:17,062 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-16 12:40:17,062 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_445b0072-55b1-4ac0-a568-1f3b2dbcbce7/bin/uautomizer-tPACEb0tL8/cvc4 [2022-11-16 12:40:17,064 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_445b0072-55b1-4ac0-a568-1f3b2dbcbce7/bin/uautomizer-tPACEb0tL8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-16 12:40:17,065 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_445b0072-55b1-4ac0-a568-1f3b2dbcbce7/bin/uautomizer-tPACEb0tL8/cvc4 --incremental --print-success --lang smt (28)] Waiting until timeout for monitored process [2022-11-16 12:41:36,609 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 23 check-sat command(s) [2022-11-16 12:41:36,609 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 12:41:36,862 INFO L263 TraceCheckSpWp]: Trace formula consists of 890 conjuncts, 66 conjunts are in the unsatisfiable core [2022-11-16 12:41:36,872 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:41:36,898 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 0 case distinctions, treesize of input 6 treesize of output 7 [2022-11-16 12:41:37,118 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-11-16 12:41:37,118 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 19 treesize of output 27 [2022-11-16 12:41:37,147 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-16 12:41:37,223 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 12 [2022-11-16 12:41:40,318 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-11-16 12:41:40,319 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 36 treesize of output 37 [2022-11-16 12:41:40,383 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 15 [2022-11-16 12:41:40,393 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 87 refuted. 0 times theorem prover too weak. 903 trivial. 0 not checked. [2022-11-16 12:41:40,394 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:41:40,902 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1925722101] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:41:40,902 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-16 12:41:40,902 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 13 [2022-11-16 12:41:40,903 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [904847247] [2022-11-16 12:41:40,903 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-16 12:41:40,903 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-16 12:41:40,904 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 12:41:40,904 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-16 12:41:40,904 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=217, Unknown=15, NotChecked=30, Total=306 [2022-11-16 12:41:40,905 INFO L87 Difference]: Start difference. First operand 2018 states and 2712 transitions. Second operand has 14 states, 12 states have (on average 7.083333333333333) internal successors, (85), 12 states have internal predecessors, (85), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-16 12:41:56,253 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:41:56,254 INFO L93 Difference]: Finished difference Result 3576 states and 4756 transitions. [2022-11-16 12:41:56,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-16 12:41:56,254 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 12 states have (on average 7.083333333333333) internal successors, (85), 12 states have internal predecessors, (85), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 132 [2022-11-16 12:41:56,255 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:41:56,258 INFO L225 Difference]: With dead ends: 3576 [2022-11-16 12:41:56,259 INFO L226 Difference]: Without dead ends: 3576 [2022-11-16 12:41:56,259 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 279 GetRequests, 166 SyntacticMatches, 89 SemanticMatches, 24 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 515 ImplicationChecksByTransitivity, 4.7s TimeCoverageRelationStatistics Valid=98, Invalid=483, Unknown=23, NotChecked=46, Total=650 [2022-11-16 12:41:56,259 INFO L413 NwaCegarLoop]: 1161 mSDtfsCounter, 1799 mSDsluCounter, 8678 mSDsCounter, 0 mSdLazyCounter, 6246 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1804 SdHoareTripleChecker+Valid, 9839 SdHoareTripleChecker+Invalid, 12032 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 6246 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 5755 IncrementalHoareTripleChecker+Unchecked, 14.7s IncrementalHoareTripleChecker+Time [2022-11-16 12:41:56,260 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1804 Valid, 9839 Invalid, 12032 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [31 Valid, 6246 Invalid, 0 Unknown, 5755 Unchecked, 14.7s Time] [2022-11-16 12:41:56,263 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3576 states. [2022-11-16 12:41:56,295 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3576 to 2015. [2022-11-16 12:41:56,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2015 states, 1458 states have (on average 1.8072702331961592) internal successors, (2635), 1972 states have internal predecessors, (2635), 34 states have call successors, (34), 15 states have call predecessors, (34), 16 states have return successors, (37), 30 states have call predecessors, (37), 34 states have call successors, (37) [2022-11-16 12:41:56,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2015 states to 2015 states and 2706 transitions. [2022-11-16 12:41:56,302 INFO L78 Accepts]: Start accepts. Automaton has 2015 states and 2706 transitions. Word has length 132 [2022-11-16 12:41:56,303 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:41:56,303 INFO L495 AbstractCegarLoop]: Abstraction has 2015 states and 2706 transitions. [2022-11-16 12:41:56,303 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 12 states have (on average 7.083333333333333) internal successors, (85), 12 states have internal predecessors, (85), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-16 12:41:56,304 INFO L276 IsEmpty]: Start isEmpty. Operand 2015 states and 2706 transitions. [2022-11-16 12:41:56,305 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2022-11-16 12:41:56,305 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:41:56,306 INFO L195 NwaCegarLoop]: trace histogram [44, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:41:56,337 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_445b0072-55b1-4ac0-a568-1f3b2dbcbce7/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 (27)] Forceful destruction successful, exit code 0 [2022-11-16 12:41:56,583 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_445b0072-55b1-4ac0-a568-1f3b2dbcbce7/bin/uautomizer-tPACEb0tL8/cvc4 --incremental --print-success --lang smt (28)] Forceful destruction successful, exit code 0 [2022-11-16 12:41:56,731 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_445b0072-55b1-4ac0-a568-1f3b2dbcbce7/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=3,28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_445b0072-55b1-4ac0-a568-1f3b2dbcbce7/bin/uautomizer-tPACEb0tL8/cvc4 --incremental --print-success --lang smt [2022-11-16 12:41:56,731 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr79REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alt_mallocErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_mallocErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_freeErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 631 more)] === [2022-11-16 12:41:56,731 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:41:56,731 INFO L85 PathProgramCache]: Analyzing trace with hash 1555511767, now seen corresponding path program 1 times [2022-11-16 12:41:56,732 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 12:41:56,733 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [450923125] [2022-11-16 12:41:56,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:41:56,733 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 12:41:56,733 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_445b0072-55b1-4ac0-a568-1f3b2dbcbce7/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 12:41:56,735 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_445b0072-55b1-4ac0-a568-1f3b2dbcbce7/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 12:41:56,743 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_445b0072-55b1-4ac0-a568-1f3b2dbcbce7/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 (29)] Waiting until timeout for monitored process [2022-11-16 12:41:57,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:41:57,934 INFO L263 TraceCheckSpWp]: Trace formula consists of 890 conjuncts, 120 conjunts are in the unsatisfiable core [2022-11-16 12:41:57,948 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:41:57,953 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 0 case distinctions, treesize of input 6 treesize of output 7 [2022-11-16 12:41:58,405 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 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-16 12:41:58,471 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-16 12:41:58,471 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2022-11-16 12:41:58,524 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-16 12:41:58,534 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-16 12:41:58,747 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 10 [2022-11-16 12:41:58,753 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-11-16 12:42:01,740 WARN L855 $PredicateComparison]: unable to prove that (and (exists ((v_ArrVal_3620 (Array (_ BitVec 32) (_ BitVec 32)))) (= (store |c_old(#memory_$Pointer$.offset)| |c_alt_bzero_#in~a#1.base| v_ArrVal_3620) |c_#memory_$Pointer$.offset|)) (exists ((v_ArrVal_3621 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |c_alt_bzero_#in~a#1.base| v_ArrVal_3621))) (exists ((v_arrayElimCell_31 (_ BitVec 32))) (= (_ bv44 32) (select |c_#length| v_arrayElimCell_31)))) is different from true [2022-11-16 12:42:01,805 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-11-16 12:42:01,806 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 46 treesize of output 45 [2022-11-16 12:42:01,813 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 24 [2022-11-16 12:42:01,898 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2022-11-16 12:42:01,907 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-11-16 12:42:01,963 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 43 refuted. 0 times theorem prover too weak. 903 trivial. 44 not checked. [2022-11-16 12:42:01,963 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:42:03,372 WARN L833 $PredicateComparison]: unable to prove that (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (and (forall ((v_ArrVal_3713 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem73#1.base| v_ArrVal_3713) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (bvule (bvadd (_ bv16 32) .cse0) (bvadd .cse0 (_ bv20 32))))) (forall ((v_ArrVal_3713 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_3712 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (bvadd (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem73#1.base| v_ArrVal_3713) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) (_ bv20 32)) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem73#1.base| v_ArrVal_3712) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))))) is different from false [2022-11-16 12:42:03,379 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 12:42:03,380 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [450923125] [2022-11-16 12:42:03,380 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [450923125] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:42:03,380 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1916045631] [2022-11-16 12:42:03,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:42:03,380 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-16 12:42:03,380 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_445b0072-55b1-4ac0-a568-1f3b2dbcbce7/bin/uautomizer-tPACEb0tL8/cvc4 [2022-11-16 12:42:03,381 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_445b0072-55b1-4ac0-a568-1f3b2dbcbce7/bin/uautomizer-tPACEb0tL8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-16 12:42:03,383 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_445b0072-55b1-4ac0-a568-1f3b2dbcbce7/bin/uautomizer-tPACEb0tL8/cvc4 --incremental --print-success --lang smt (30)] Waiting until timeout for monitored process [2022-11-16 12:44:05,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:44:05,493 INFO L263 TraceCheckSpWp]: Trace formula consists of 890 conjuncts, 118 conjunts are in the unsatisfiable core [2022-11-16 12:44:05,509 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:44:05,514 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 0 case distinctions, treesize of input 6 treesize of output 7 [2022-11-16 12:44:05,765 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 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-16 12:44:05,798 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-16 12:44:05,799 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2022-11-16 12:44:05,875 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-16 12:44:05,890 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-16 12:44:06,133 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 10 [2022-11-16 12:44:06,140 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 3 [2022-11-16 12:44:09,007 WARN L855 $PredicateComparison]: unable to prove that (and (exists ((v_ArrVal_4192 (Array (_ BitVec 32) (_ BitVec 32)))) (= (store |c_old(#memory_$Pointer$.offset)| |c_alt_bzero_#in~a#1.base| v_ArrVal_4192) |c_#memory_$Pointer$.offset|)) (exists ((v_ArrVal_4191 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |c_alt_bzero_#in~a#1.base| v_ArrVal_4191))) (exists ((v_arrayElimCell_31 (_ BitVec 32))) (= (_ bv44 32) (select |c_#length| v_arrayElimCell_31)))) is different from true [2022-11-16 12:44:09,080 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-11-16 12:44:09,081 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 46 treesize of output 45 [2022-11-16 12:44:09,089 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 24 [2022-11-16 12:44:09,207 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 13 [2022-11-16 12:44:09,213 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2022-11-16 12:44:09,222 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 43 refuted. 0 times theorem prover too weak. 903 trivial. 44 not checked. [2022-11-16 12:44:09,222 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:44:10,456 WARN L833 $PredicateComparison]: unable to prove that (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (and (forall ((v_ArrVal_4283 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem73#1.base| v_ArrVal_4283) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (bvule (bvadd (_ bv16 32) .cse0) (bvadd .cse0 (_ bv20 32))))) (forall ((v_ArrVal_4283 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_4284 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (bvadd (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem73#1.base| v_ArrVal_4283) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) (_ bv20 32)) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem73#1.base| v_ArrVal_4284) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))))) is different from false [2022-11-16 12:44:10,463 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1916045631] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:44:10,463 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-16 12:44:10,464 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 20 [2022-11-16 12:44:10,464 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1763655782] [2022-11-16 12:44:10,464 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-16 12:44:10,464 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-11-16 12:44:10,465 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 12:44:10,465 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-11-16 12:44:10,465 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=369, Unknown=5, NotChecked=164, Total=600 [2022-11-16 12:44:10,466 INFO L87 Difference]: Start difference. First operand 2015 states and 2706 transitions. Second operand has 21 states, 18 states have (on average 8.38888888888889) internal successors, (151), 17 states have internal predecessors, (151), 5 states have call successors, (5), 3 states have call predecessors, (5), 4 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2022-11-16 12:44:11,598 WARN L855 $PredicateComparison]: unable to prove that (and (exists ((v_ArrVal_3620 (Array (_ BitVec 32) (_ BitVec 32)))) (= (store |c_old(#memory_$Pointer$.offset)| |c_alt_bzero_#in~a#1.base| v_ArrVal_3620) |c_#memory_$Pointer$.offset|)) (exists ((v_ArrVal_4192 (Array (_ BitVec 32) (_ BitVec 32)))) (= (store |c_old(#memory_$Pointer$.offset)| |c_alt_bzero_#in~a#1.base| v_ArrVal_4192) |c_#memory_$Pointer$.offset|)) (exists ((v_ArrVal_4191 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |c_alt_bzero_#in~a#1.base| v_ArrVal_4191))) (exists ((v_ArrVal_3621 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |c_alt_bzero_#in~a#1.base| v_ArrVal_3621))) (exists ((v_arrayElimCell_31 (_ BitVec 32))) (= (_ bv44 32) (select |c_#length| v_arrayElimCell_31)))) is different from true [2022-11-16 12:44:30,828 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:44:30,828 INFO L93 Difference]: Finished difference Result 3336 states and 4412 transitions. [2022-11-16 12:44:30,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-11-16 12:44:30,829 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 18 states have (on average 8.38888888888889) internal successors, (151), 17 states have internal predecessors, (151), 5 states have call successors, (5), 3 states have call predecessors, (5), 4 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) Word has length 132 [2022-11-16 12:44:30,829 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:44:30,833 INFO L225 Difference]: With dead ends: 3336 [2022-11-16 12:44:30,834 INFO L226 Difference]: Without dead ends: 3336 [2022-11-16 12:44:30,834 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 280 GetRequests, 160 SyntacticMatches, 89 SemanticMatches, 31 ConstructedPredicates, 5 IntricatePredicates, 0 DeprecatedPredicates, 638 ImplicationChecksByTransitivity, 5.7s TimeCoverageRelationStatistics Valid=117, Invalid=653, Unknown=6, NotChecked=280, Total=1056 [2022-11-16 12:44:30,835 INFO L413 NwaCegarLoop]: 1101 mSDtfsCounter, 2958 mSDsluCounter, 6857 mSDsCounter, 0 mSdLazyCounter, 8160 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 17.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2963 SdHoareTripleChecker+Valid, 7958 SdHoareTripleChecker+Invalid, 15059 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 8160 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 6862 IncrementalHoareTripleChecker+Unchecked, 19.6s IncrementalHoareTripleChecker+Time [2022-11-16 12:44:30,835 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2963 Valid, 7958 Invalid, 15059 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [37 Valid, 8160 Invalid, 0 Unknown, 6862 Unchecked, 19.6s Time] [2022-11-16 12:44:30,839 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3336 states. [2022-11-16 12:44:30,864 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3336 to 2014. [2022-11-16 12:44:30,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2014 states, 1458 states have (on average 1.8058984910836762) internal successors, (2633), 1971 states have internal predecessors, (2633), 34 states have call successors, (34), 15 states have call predecessors, (34), 16 states have return successors, (37), 30 states have call predecessors, (37), 34 states have call successors, (37) [2022-11-16 12:44:30,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2014 states to 2014 states and 2704 transitions. [2022-11-16 12:44:30,871 INFO L78 Accepts]: Start accepts. Automaton has 2014 states and 2704 transitions. Word has length 132 [2022-11-16 12:44:30,871 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:44:30,871 INFO L495 AbstractCegarLoop]: Abstraction has 2014 states and 2704 transitions. [2022-11-16 12:44:30,872 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 18 states have (on average 8.38888888888889) internal successors, (151), 17 states have internal predecessors, (151), 5 states have call successors, (5), 3 states have call predecessors, (5), 4 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2022-11-16 12:44:30,872 INFO L276 IsEmpty]: Start isEmpty. Operand 2014 states and 2704 transitions. [2022-11-16 12:44:30,873 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2022-11-16 12:44:30,874 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:44:30,874 INFO L195 NwaCegarLoop]: trace histogram [44, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:44:30,938 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_445b0072-55b1-4ac0-a568-1f3b2dbcbce7/bin/uautomizer-tPACEb0tL8/cvc4 --incremental --print-success --lang smt (30)] Forceful destruction successful, exit code 0 [2022-11-16 12:44:31,107 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_445b0072-55b1-4ac0-a568-1f3b2dbcbce7/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 (29)] Ended with exit code 0 [2022-11-16 12:44:31,290 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_445b0072-55b1-4ac0-a568-1f3b2dbcbce7/bin/uautomizer-tPACEb0tL8/cvc4 --incremental --print-success --lang smt,29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_445b0072-55b1-4ac0-a568-1f3b2dbcbce7/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 12:44:31,290 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr82REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alt_mallocErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_mallocErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_freeErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 631 more)] === [2022-11-16 12:44:31,290 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:44:31,291 INFO L85 PathProgramCache]: Analyzing trace with hash 1849192087, now seen corresponding path program 1 times [2022-11-16 12:44:31,291 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 12:44:31,291 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1284083951] [2022-11-16 12:44:31,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:44:31,292 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 12:44:31,292 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_445b0072-55b1-4ac0-a568-1f3b2dbcbce7/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 12:44:31,293 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_445b0072-55b1-4ac0-a568-1f3b2dbcbce7/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 12:44:31,294 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_445b0072-55b1-4ac0-a568-1f3b2dbcbce7/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 (31)] Waiting until timeout for monitored process [2022-11-16 12:44:32,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:44:32,677 INFO L263 TraceCheckSpWp]: Trace formula consists of 910 conjuncts, 66 conjunts are in the unsatisfiable core [2022-11-16 12:44:32,688 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:44:32,692 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 0 case distinctions, treesize of input 6 treesize of output 7 [2022-11-16 12:44:32,949 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-11-16 12:44:32,949 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 19 treesize of output 27 [2022-11-16 12:44:32,995 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-16 12:44:33,147 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 12 [2022-11-16 12:44:36,073 WARN L855 $PredicateComparison]: unable to prove that (and (exists ((v_arrayElimCell_47 (_ BitVec 32)) (|v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_12| (_ BitVec 32))) (and (= (_ bv0 1) (bvadd (select |c_#valid| v_arrayElimCell_47) (_ bv1 1))) (not (= v_arrayElimCell_47 |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_12|)) (= (_ bv0 1) (bvadd (select |c_#valid| |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_12|) (_ bv1 1))))) (exists ((v_ArrVal_4723 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |c_alt_bzero_#in~a#1.base| v_ArrVal_4723)))) is different from true [2022-11-16 12:44:36,160 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-11-16 12:44:36,160 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 36 treesize of output 37 [2022-11-16 12:44:36,339 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-11-16 12:44:36,339 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 36 treesize of output 37 [2022-11-16 12:44:36,370 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 15 [2022-11-16 12:44:36,430 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 43 refuted. 0 times theorem prover too weak. 903 trivial. 44 not checked. [2022-11-16 12:44:36,431 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:44:36,521 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_4724 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (select |c_#valid| (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem74#1.base| v_ArrVal_4724) |c_ULTIMATE.start_main_~user~0#1.base|) (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (_ bv1 1)))) is different from false [2022-11-16 12:44:36,539 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_4724 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (select |c_#valid| (let ((.cse0 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (store |c_#memory_$Pointer$.base| (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse0) v_ArrVal_4724) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0))) (_ bv1 1)))) is different from false [2022-11-16 12:44:36,968 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_4724 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_4770 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (select |c_#valid| (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (let ((.cse0 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem73#1.base| v_ArrVal_4770))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_4724)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (_ bv1 1)))) is different from false [2022-11-16 12:44:36,971 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 12:44:36,971 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1284083951] [2022-11-16 12:44:36,971 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1284083951] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:44:36,972 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1856550263] [2022-11-16 12:44:36,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:44:36,972 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-16 12:44:36,972 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_445b0072-55b1-4ac0-a568-1f3b2dbcbce7/bin/uautomizer-tPACEb0tL8/cvc4 [2022-11-16 12:44:36,973 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_445b0072-55b1-4ac0-a568-1f3b2dbcbce7/bin/uautomizer-tPACEb0tL8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-16 12:44:36,976 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_445b0072-55b1-4ac0-a568-1f3b2dbcbce7/bin/uautomizer-tPACEb0tL8/cvc4 --incremental --print-success --lang smt (32)] Waiting until timeout for monitored process [2022-11-16 12:44:43,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:44:43,215 INFO L263 TraceCheckSpWp]: Trace formula consists of 910 conjuncts, 68 conjunts are in the unsatisfiable core [2022-11-16 12:44:43,226 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:44:43,254 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 0 case distinctions, treesize of input 6 treesize of output 7 [2022-11-16 12:44:43,454 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-11-16 12:44:43,454 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 19 treesize of output 27 [2022-11-16 12:44:43,474 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-16 12:44:43,546 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 12 [2022-11-16 12:44:46,496 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-11-16 12:44:46,496 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 36 treesize of output 37 [2022-11-16 12:44:46,594 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-11-16 12:44:46,594 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 36 treesize of output 37 [2022-11-16 12:44:46,622 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 15 [2022-11-16 12:44:46,638 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 87 refuted. 0 times theorem prover too weak. 903 trivial. 0 not checked. [2022-11-16 12:44:46,638 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:44:48,768 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_5210 (Array (_ BitVec 32) (_ BitVec 32)))) (= (bvadd (select |c_#valid| (let ((.cse0 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (store |c_#memory_$Pointer$.base| (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse0) v_ArrVal_5210) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0))) (_ bv1 1)) (_ bv0 1))) is different from false [2022-11-16 12:44:49,232 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_5256 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_5210 (Array (_ BitVec 32) (_ BitVec 32)))) (= (bvadd (select |c_#valid| (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (let ((.cse0 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem73#1.base| v_ArrVal_5256))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_5210)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (_ bv1 1)) (_ bv0 1))) is different from false [2022-11-16 12:44:49,235 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1856550263] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:44:49,235 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-16 12:44:49,236 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 15 [2022-11-16 12:44:49,236 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1395042110] [2022-11-16 12:44:49,236 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-16 12:44:49,236 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-11-16 12:44:49,237 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 12:44:49,237 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-11-16 12:44:49,237 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=249, Unknown=23, NotChecked=222, Total=552 [2022-11-16 12:44:49,238 INFO L87 Difference]: Start difference. First operand 2014 states and 2704 transitions. Second operand has 16 states, 14 states have (on average 6.571428571428571) internal successors, (92), 14 states have internal predecessors, (92), 3 states have call successors, (3), 3 states have call predecessors, (3), 4 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2022-11-16 12:45:03,552 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:45:03,552 INFO L93 Difference]: Finished difference Result 3574 states and 4752 transitions. [2022-11-16 12:45:03,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-11-16 12:45:03,553 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 14 states have (on average 6.571428571428571) internal successors, (92), 14 states have internal predecessors, (92), 3 states have call successors, (3), 3 states have call predecessors, (3), 4 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) Word has length 135 [2022-11-16 12:45:03,553 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:45:03,557 INFO L225 Difference]: With dead ends: 3574 [2022-11-16 12:45:03,557 INFO L226 Difference]: Without dead ends: 3574 [2022-11-16 12:45:03,558 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 293 GetRequests, 173 SyntacticMatches, 90 SemanticMatches, 30 ConstructedPredicates, 6 IntricatePredicates, 0 DeprecatedPredicates, 538 ImplicationChecksByTransitivity, 6.7s TimeCoverageRelationStatistics Valid=111, Invalid=532, Unknown=31, NotChecked=318, Total=992 [2022-11-16 12:45:03,558 INFO L413 NwaCegarLoop]: 1160 mSDtfsCounter, 1798 mSDsluCounter, 7908 mSDsCounter, 0 mSdLazyCounter, 5478 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1803 SdHoareTripleChecker+Valid, 9068 SdHoareTripleChecker+Invalid, 13710 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 5478 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 8202 IncrementalHoareTripleChecker+Unchecked, 13.6s IncrementalHoareTripleChecker+Time [2022-11-16 12:45:03,558 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1803 Valid, 9068 Invalid, 13710 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [30 Valid, 5478 Invalid, 0 Unknown, 8202 Unchecked, 13.6s Time] [2022-11-16 12:45:03,562 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3574 states. [2022-11-16 12:45:03,590 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3574 to 2013. [2022-11-16 12:45:03,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2013 states, 1458 states have (on average 1.8045267489711934) internal successors, (2631), 1970 states have internal predecessors, (2631), 34 states have call successors, (34), 15 states have call predecessors, (34), 16 states have return successors, (37), 30 states have call predecessors, (37), 34 states have call successors, (37) [2022-11-16 12:45:03,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2013 states to 2013 states and 2702 transitions. [2022-11-16 12:45:03,598 INFO L78 Accepts]: Start accepts. Automaton has 2013 states and 2702 transitions. Word has length 135 [2022-11-16 12:45:03,598 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:45:03,599 INFO L495 AbstractCegarLoop]: Abstraction has 2013 states and 2702 transitions. [2022-11-16 12:45:03,599 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 14 states have (on average 6.571428571428571) internal successors, (92), 14 states have internal predecessors, (92), 3 states have call successors, (3), 3 states have call predecessors, (3), 4 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2022-11-16 12:45:03,599 INFO L276 IsEmpty]: Start isEmpty. Operand 2013 states and 2702 transitions. [2022-11-16 12:45:03,600 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2022-11-16 12:45:03,601 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:45:03,601 INFO L195 NwaCegarLoop]: trace histogram [44, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:45:03,633 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_445b0072-55b1-4ac0-a568-1f3b2dbcbce7/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 (31)] Forceful destruction successful, exit code 0 [2022-11-16 12:45:03,850 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_445b0072-55b1-4ac0-a568-1f3b2dbcbce7/bin/uautomizer-tPACEb0tL8/cvc4 --incremental --print-success --lang smt (32)] Forceful destruction successful, exit code 0 [2022-11-16 12:45:04,026 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_445b0072-55b1-4ac0-a568-1f3b2dbcbce7/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=3,32 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_445b0072-55b1-4ac0-a568-1f3b2dbcbce7/bin/uautomizer-tPACEb0tL8/cvc4 --incremental --print-success --lang smt [2022-11-16 12:45:04,027 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr83REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alt_mallocErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_mallocErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_freeErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 631 more)] === [2022-11-16 12:45:04,027 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:45:04,027 INFO L85 PathProgramCache]: Analyzing trace with hash 1849192088, now seen corresponding path program 1 times [2022-11-16 12:45:04,028 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 12:45:04,028 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1074943604] [2022-11-16 12:45:04,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:45:04,028 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 12:45:04,028 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_445b0072-55b1-4ac0-a568-1f3b2dbcbce7/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 12:45:04,029 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_445b0072-55b1-4ac0-a568-1f3b2dbcbce7/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 12:45:04,030 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_445b0072-55b1-4ac0-a568-1f3b2dbcbce7/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 (33)] Waiting until timeout for monitored process [2022-11-16 12:45:05,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:45:05,608 INFO L263 TraceCheckSpWp]: Trace formula consists of 910 conjuncts, 123 conjunts are in the unsatisfiable core [2022-11-16 12:45:05,625 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:45:05,632 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 0 case distinctions, treesize of input 6 treesize of output 7 [2022-11-16 12:45:06,093 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 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-16 12:45:06,157 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-16 12:45:06,157 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2022-11-16 12:45:06,215 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-16 12:45:06,225 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-16 12:45:06,433 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 10 [2022-11-16 12:45:06,440 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-11-16 12:45:09,759 WARN L855 $PredicateComparison]: unable to prove that (and (exists ((v_ArrVal_5740 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |c_alt_bzero_#in~a#1.base| v_ArrVal_5740))) (exists ((v_arrayElimCell_59 (_ BitVec 32))) (= (select |c_#length| v_arrayElimCell_59) (_ bv44 32))) (exists ((v_ArrVal_5741 (Array (_ BitVec 32) (_ BitVec 32)))) (= (store |c_old(#memory_$Pointer$.offset)| |c_alt_bzero_#in~a#1.base| v_ArrVal_5741) |c_#memory_$Pointer$.offset|))) is different from true [2022-11-16 12:45:09,850 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-11-16 12:45:09,850 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 46 treesize of output 45 [2022-11-16 12:45:09,862 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 24 [2022-11-16 12:45:10,094 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-11-16 12:45:10,094 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 46 treesize of output 45 [2022-11-16 12:45:10,102 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 24 [2022-11-16 12:45:10,148 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2022-11-16 12:45:10,158 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-11-16 12:45:10,216 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 43 refuted. 0 times theorem prover too weak. 903 trivial. 44 not checked. [2022-11-16 12:45:10,216 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:45:10,593 WARN L833 $PredicateComparison]: unable to prove that (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (and (forall ((v_ArrVal_5742 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem74#1.base| v_ArrVal_5742) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (bvule (bvadd .cse0 (_ bv4 32)) (bvadd .cse0 (_ bv8 32))))) (forall ((v_ArrVal_5742 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_5743 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (bvadd (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem74#1.base| v_ArrVal_5742) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) (_ bv8 32)) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem74#1.base| v_ArrVal_5743) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))))) is different from false [2022-11-16 12:45:10,652 WARN L833 $PredicateComparison]: unable to prove that (let ((.cse2 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (let ((.cse1 (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (and (forall ((v_ArrVal_5742 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (store |c_#memory_$Pointer$.offset| .cse1 v_ArrVal_5742) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (bvule (bvadd (_ bv4 32) .cse0) (bvadd (_ bv8 32) .cse0)))) (forall ((v_ArrVal_5742 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_5743 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (bvadd (_ bv8 32) (select (select (store |c_#memory_$Pointer$.offset| .cse1 v_ArrVal_5742) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2)) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| .cse1 v_ArrVal_5743) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))))))) is different from false [2022-11-16 12:45:12,003 WARN L833 $PredicateComparison]: unable to prove that (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (and (forall ((v_ArrVal_5834 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_5835 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_5742 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_5743 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse2 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem73#1.base| v_ArrVal_5834))) (let ((.cse0 (select (select .cse2 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (bvule (bvadd (_ bv8 32) (select (select (store (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem73#1.base| v_ArrVal_5835) .cse0 v_ArrVal_5742) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)) (select |c_#length| (select (select (store .cse2 .cse0 v_ArrVal_5743) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))))) (forall ((v_ArrVal_5834 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_5835 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_5742 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse3 (select (select (store (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem73#1.base| v_ArrVal_5835) (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem73#1.base| v_ArrVal_5834) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_5742) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (bvule (bvadd (_ bv4 32) .cse3) (bvadd (_ bv8 32) .cse3)))))) is different from false [2022-11-16 12:45:12,018 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 12:45:12,018 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1074943604] [2022-11-16 12:45:12,018 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1074943604] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:45:12,018 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1026963528] [2022-11-16 12:45:12,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:45:12,018 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-16 12:45:12,019 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_445b0072-55b1-4ac0-a568-1f3b2dbcbce7/bin/uautomizer-tPACEb0tL8/cvc4 [2022-11-16 12:45:12,022 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_445b0072-55b1-4ac0-a568-1f3b2dbcbce7/bin/uautomizer-tPACEb0tL8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-16 12:45:12,024 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_445b0072-55b1-4ac0-a568-1f3b2dbcbce7/bin/uautomizer-tPACEb0tL8/cvc4 --incremental --print-success --lang smt (34)] Waiting until timeout for monitored process [2022-11-16 12:45:18,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:45:18,171 INFO L263 TraceCheckSpWp]: Trace formula consists of 910 conjuncts, 87 conjunts are in the unsatisfiable core [2022-11-16 12:45:18,183 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:45:18,188 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 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-16 12:45:18,199 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 0 case distinctions, treesize of input 6 treesize of output 7 [2022-11-16 12:45:19,242 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-16 12:45:19,242 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2022-11-16 12:45:19,252 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2022-11-16 12:45:19,380 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-16 12:45:19,390 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-16 12:45:19,560 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 9 [2022-11-16 12:45:19,679 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-11-16 12:45:25,822 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:45:25,823 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2022-11-16 12:45:26,234 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:45:26,247 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 82 treesize of output 60 [2022-11-16 12:45:26,274 INFO L321 Elim1Store]: treesize reduction 43, result has 17.3 percent of original size [2022-11-16 12:45:26,275 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 60 treesize of output 44 [2022-11-16 12:45:26,486 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2022-11-16 12:45:26,490 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-11-16 12:45:26,649 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 87 refuted. 0 times theorem prover too weak. 903 trivial. 0 not checked. [2022-11-16 12:45:26,650 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:45:27,265 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 231 treesize of output 159 [2022-11-16 12:45:32,731 WARN L833 $PredicateComparison]: unable to prove that (let ((.cse3 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (and (forall ((v_ArrVal_6327 (Array (_ BitVec 32) (_ BitVec 32))) (v_arrayElimCell_77 (_ BitVec 32))) (let ((.cse1 (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem73#1.base| v_ArrVal_6327))) (let ((.cse2 (select (select .cse1 |c_ULTIMATE.start_main_~user~0#1.base|) .cse3))) (or (forall ((v_ArrVal_6278 (_ BitVec 32))) (let ((.cse0 (select (select (store .cse1 v_arrayElimCell_77 (store (select .cse1 v_arrayElimCell_77) (bvadd (_ bv16 32) .cse2) v_ArrVal_6278)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse3))) (bvule (bvadd (_ bv4 32) .cse0) (bvadd (_ bv8 32) .cse0)))) (not (bvule (bvadd .cse2 (_ bv20 32)) (select |c_#length| v_arrayElimCell_77))))))) (forall ((v_ArrVal_6327 (Array (_ BitVec 32) (_ BitVec 32))) (v_arrayElimCell_77 (_ BitVec 32))) (let ((.cse6 (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem73#1.base| v_ArrVal_6327))) (let ((.cse7 (select (select .cse6 |c_ULTIMATE.start_main_~user~0#1.base|) .cse3)) (.cse5 (select |c_#length| v_arrayElimCell_77))) (or (forall ((v_prenex_6 (_ BitVec 32))) (let ((.cse4 (bvadd (_ bv8 32) (select (select (store .cse6 v_arrayElimCell_77 (store (select .cse6 v_arrayElimCell_77) (bvadd (_ bv16 32) .cse7) v_prenex_6)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse3)))) (or (forall ((v_ArrVal_6279 (_ BitVec 32))) (bvule .cse4 (select |c_#length| v_ArrVal_6279))) (bvule .cse4 .cse5)))) (not (bvule (bvadd .cse7 (_ bv20 32)) .cse5)))))))) is different from false [2022-11-16 12:45:32,751 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1026963528] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:45:32,751 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-16 12:45:32,752 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 17] total 31 [2022-11-16 12:45:32,752 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1582665622] [2022-11-16 12:45:32,752 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-16 12:45:32,752 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-11-16 12:45:32,752 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 12:45:32,753 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-11-16 12:45:32,753 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=114, Invalid=1078, Unknown=18, NotChecked=350, Total=1560 [2022-11-16 12:45:32,753 INFO L87 Difference]: Start difference. First operand 2013 states and 2702 transitions. Second operand has 32 states, 29 states have (on average 5.827586206896552) internal successors, (169), 26 states have internal predecessors, (169), 6 states have call successors, (6), 5 states have call predecessors, (6), 5 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-11-16 12:46:13,928 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:46:13,929 INFO L93 Difference]: Finished difference Result 2868 states and 3816 transitions. [2022-11-16 12:46:13,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-11-16 12:46:13,929 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 29 states have (on average 5.827586206896552) internal successors, (169), 26 states have internal predecessors, (169), 6 states have call successors, (6), 5 states have call predecessors, (6), 5 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) Word has length 135 [2022-11-16 12:46:13,930 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:46:13,933 INFO L225 Difference]: With dead ends: 2868 [2022-11-16 12:46:13,933 INFO L226 Difference]: Without dead ends: 2868 [2022-11-16 12:46:13,934 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 296 GetRequests, 160 SyntacticMatches, 87 SemanticMatches, 49 ConstructedPredicates, 5 IntricatePredicates, 0 DeprecatedPredicates, 1189 ImplicationChecksByTransitivity, 16.6s TimeCoverageRelationStatistics Valid=219, Invalid=1827, Unknown=44, NotChecked=460, Total=2550 [2022-11-16 12:46:13,935 INFO L413 NwaCegarLoop]: 1290 mSDtfsCounter, 1409 mSDsluCounter, 15385 mSDsCounter, 0 mSdLazyCounter, 14601 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 34.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1412 SdHoareTripleChecker+Valid, 16675 SdHoareTripleChecker+Invalid, 24470 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 14601 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 9825 IncrementalHoareTripleChecker+Unchecked, 39.1s IncrementalHoareTripleChecker+Time [2022-11-16 12:46:13,935 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1412 Valid, 16675 Invalid, 24470 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [44 Valid, 14601 Invalid, 0 Unknown, 9825 Unchecked, 39.1s Time] [2022-11-16 12:46:13,938 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2868 states. [2022-11-16 12:46:13,961 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2868 to 2012. [2022-11-16 12:46:13,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2012 states, 1458 states have (on average 1.8031550068587106) internal successors, (2629), 1969 states have internal predecessors, (2629), 34 states have call successors, (34), 15 states have call predecessors, (34), 16 states have return successors, (37), 30 states have call predecessors, (37), 34 states have call successors, (37) [2022-11-16 12:46:13,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2012 states to 2012 states and 2700 transitions. [2022-11-16 12:46:13,968 INFO L78 Accepts]: Start accepts. Automaton has 2012 states and 2700 transitions. Word has length 135 [2022-11-16 12:46:13,968 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:46:13,968 INFO L495 AbstractCegarLoop]: Abstraction has 2012 states and 2700 transitions. [2022-11-16 12:46:13,969 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 29 states have (on average 5.827586206896552) internal successors, (169), 26 states have internal predecessors, (169), 6 states have call successors, (6), 5 states have call predecessors, (6), 5 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-11-16 12:46:13,969 INFO L276 IsEmpty]: Start isEmpty. Operand 2012 states and 2700 transitions. [2022-11-16 12:46:13,971 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2022-11-16 12:46:13,971 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:46:13,971 INFO L195 NwaCegarLoop]: trace histogram [44, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:46:14,000 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_445b0072-55b1-4ac0-a568-1f3b2dbcbce7/bin/uautomizer-tPACEb0tL8/cvc4 --incremental --print-success --lang smt (34)] Forceful destruction successful, exit code 0 [2022-11-16 12:46:14,211 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_445b0072-55b1-4ac0-a568-1f3b2dbcbce7/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 (33)] Forceful destruction successful, exit code 0 [2022-11-16 12:46:14,394 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_445b0072-55b1-4ac0-a568-1f3b2dbcbce7/bin/uautomizer-tPACEb0tL8/cvc4 --incremental --print-success --lang smt,33 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_445b0072-55b1-4ac0-a568-1f3b2dbcbce7/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 12:46:14,394 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr86REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alt_mallocErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_mallocErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_freeErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 631 more)] === [2022-11-16 12:46:14,394 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:46:14,394 INFO L85 PathProgramCache]: Analyzing trace with hash 2031259997, now seen corresponding path program 1 times [2022-11-16 12:46:14,395 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 12:46:14,396 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2065785468] [2022-11-16 12:46:14,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:46:14,396 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 12:46:14,396 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_445b0072-55b1-4ac0-a568-1f3b2dbcbce7/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 12:46:14,398 INFO L229 MonitoredProcess]: Starting monitored process 35 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_445b0072-55b1-4ac0-a568-1f3b2dbcbce7/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 12:46:14,413 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_445b0072-55b1-4ac0-a568-1f3b2dbcbce7/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 (35)] Waiting until timeout for monitored process [2022-11-16 12:46:15,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:46:15,788 INFO L263 TraceCheckSpWp]: Trace formula consists of 939 conjuncts, 68 conjunts are in the unsatisfiable core [2022-11-16 12:46:15,798 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:46:15,808 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 0 case distinctions, treesize of input 6 treesize of output 7 [2022-11-16 12:46:16,078 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-11-16 12:46:16,079 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 19 treesize of output 27 [2022-11-16 12:46:16,123 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-16 12:46:16,289 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 12 [2022-11-16 12:46:19,475 WARN L855 $PredicateComparison]: unable to prove that (and (exists ((|v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_20| (_ BitVec 32)) (v_arrayElimCell_80 (_ BitVec 32))) (and (= (bvadd (select |c_#valid| v_arrayElimCell_80) (_ bv1 1)) (_ bv0 1)) (not (= v_arrayElimCell_80 |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_20|)) (= (_ bv0 1) (bvadd (select |c_#valid| |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_20|) (_ bv1 1))))) (exists ((v_ArrVal_6781 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |c_alt_bzero_#in~a#1.base| v_ArrVal_6781)))) is different from true [2022-11-16 12:46:19,576 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-11-16 12:46:19,577 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 36 treesize of output 37 [2022-11-16 12:46:19,793 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-11-16 12:46:19,794 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 36 treesize of output 37 [2022-11-16 12:46:19,957 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-11-16 12:46:19,958 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 36 treesize of output 37 [2022-11-16 12:46:20,000 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 15 [2022-11-16 12:46:20,082 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 43 refuted. 0 times theorem prover too weak. 903 trivial. 44 not checked. [2022-11-16 12:46:20,083 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:46:22,298 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_6783 (Array (_ BitVec 32) (_ BitVec 32)))) (= (bvadd (select |c_#valid| (let ((.cse0 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (store |c_#memory_$Pointer$.base| (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse0) v_ArrVal_6783) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0))) (_ bv1 1)) (_ bv0 1))) is different from false [2022-11-16 12:46:22,324 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_6782 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_6783 (Array (_ BitVec 32) (_ BitVec 32)))) (= (bvadd (select |c_#valid| (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (let ((.cse0 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem74#1.base| v_ArrVal_6782))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_6783)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (_ bv1 1)) (_ bv0 1))) is different from false [2022-11-16 12:46:22,343 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_6782 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_6783 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (select |c_#valid| (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (let ((.cse0 (store |c_#memory_$Pointer$.base| (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_6782))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_6783)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (_ bv1 1)))) is different from false [2022-11-16 12:46:22,863 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_6829 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_6782 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_6783 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (select |c_#valid| (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (let ((.cse0 (let ((.cse2 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem73#1.base| v_ArrVal_6829))) (store .cse2 (select (select .cse2 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_6782)))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_6783)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (_ bv1 1)))) is different from false [2022-11-16 12:46:22,868 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 12:46:22,869 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2065785468] [2022-11-16 12:46:22,869 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2065785468] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:46:22,869 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1790268386] [2022-11-16 12:46:22,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:46:22,869 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-16 12:46:22,869 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_445b0072-55b1-4ac0-a568-1f3b2dbcbce7/bin/uautomizer-tPACEb0tL8/cvc4 [2022-11-16 12:46:22,870 INFO L229 MonitoredProcess]: Starting monitored process 36 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_445b0072-55b1-4ac0-a568-1f3b2dbcbce7/bin/uautomizer-tPACEb0tL8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-16 12:46:22,890 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_445b0072-55b1-4ac0-a568-1f3b2dbcbce7/bin/uautomizer-tPACEb0tL8/cvc4 --incremental --print-success --lang smt (36)] Waiting until timeout for monitored process [2022-11-16 12:46:29,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:46:29,971 INFO L263 TraceCheckSpWp]: Trace formula consists of 939 conjuncts, 70 conjunts are in the unsatisfiable core [2022-11-16 12:46:29,982 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:46:29,988 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 0 case distinctions, treesize of input 6 treesize of output 7 [2022-11-16 12:46:30,240 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-11-16 12:46:30,241 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 19 treesize of output 27 [2022-11-16 12:46:30,263 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-16 12:46:30,352 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 12 [2022-11-16 12:46:33,742 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-11-16 12:46:33,742 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 36 treesize of output 37 [2022-11-16 12:46:33,848 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-11-16 12:46:33,849 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 36 treesize of output 37 [2022-11-16 12:46:33,926 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-11-16 12:46:33,927 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 36 treesize of output 37 [2022-11-16 12:46:33,956 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 15 [2022-11-16 12:46:33,971 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 87 refuted. 0 times theorem prover too weak. 903 trivial. 0 not checked. [2022-11-16 12:46:33,972 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:46:33,997 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_7285 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (_ bv1 1) (select |c_#valid| (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem75#1.base| v_ArrVal_7285) |c_ULTIMATE.start_main_~user~0#1.base|) (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|)))))) is different from false [2022-11-16 12:46:34,012 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_7285 (Array (_ BitVec 32) (_ BitVec 32)))) (= (bvadd (_ bv1 1) (select |c_#valid| (let ((.cse0 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (store |c_#memory_$Pointer$.base| (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse0) v_ArrVal_7285) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0)))) (_ bv0 1))) is different from false [2022-11-16 12:46:34,037 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_7284 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7285 (Array (_ BitVec 32) (_ BitVec 32)))) (= (bvadd (select |c_#valid| (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (let ((.cse0 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem74#1.base| v_ArrVal_7284))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_7285)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (_ bv1 1)) (_ bv0 1))) is different from false [2022-11-16 12:46:34,056 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_7284 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7285 (Array (_ BitVec 32) (_ BitVec 32)))) (= (bvadd (select |c_#valid| (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (let ((.cse0 (store |c_#memory_$Pointer$.base| (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_7284))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_7285)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (_ bv1 1)) (_ bv0 1))) is different from false [2022-11-16 12:46:34,501 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_7284 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7285 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7331 (Array (_ BitVec 32) (_ BitVec 32)))) (= (bvadd (select |c_#valid| (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (let ((.cse0 (let ((.cse2 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem73#1.base| v_ArrVal_7331))) (store .cse2 (select (select .cse2 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_7284)))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_7285)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (_ bv1 1)) (_ bv0 1))) is different from false [2022-11-16 12:46:34,505 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1790268386] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:46:34,506 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-16 12:46:34,506 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 16 [2022-11-16 12:46:34,506 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1147501803] [2022-11-16 12:46:34,506 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-16 12:46:34,506 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-11-16 12:46:34,506 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 12:46:34,507 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-11-16 12:46:34,507 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=283, Unknown=28, NotChecked=430, Total=812 [2022-11-16 12:46:34,507 INFO L87 Difference]: Start difference. First operand 2012 states and 2700 transitions. Second operand has 17 states, 15 states have (on average 6.333333333333333) internal successors, (95), 15 states have internal predecessors, (95), 3 states have call successors, (3), 3 states have call predecessors, (3), 4 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2022-11-16 12:46:35,794 WARN L855 $PredicateComparison]: unable to prove that (and (exists ((|v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_20| (_ BitVec 32)) (v_arrayElimCell_80 (_ BitVec 32))) (and (= (bvadd (select |c_#valid| v_arrayElimCell_80) (_ bv1 1)) (_ bv0 1)) (not (= v_arrayElimCell_80 |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_20|)) (= (_ bv0 1) (bvadd (select |c_#valid| |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_20|) (_ bv1 1))))) (exists ((v_ArrVal_7283 (Array (_ BitVec 32) (_ BitVec 32)))) (= (store |c_old(#memory_$Pointer$.base)| |c_alt_bzero_#in~a#1.base| v_ArrVal_7283) |c_#memory_$Pointer$.base|)) (exists ((v_ArrVal_6781 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |c_alt_bzero_#in~a#1.base| v_ArrVal_6781)))) is different from true [2022-11-16 12:46:54,207 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:46:54,207 INFO L93 Difference]: Finished difference Result 3572 states and 4748 transitions. [2022-11-16 12:46:54,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-11-16 12:46:54,208 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 15 states have (on average 6.333333333333333) internal successors, (95), 15 states have internal predecessors, (95), 3 states have call successors, (3), 3 states have call predecessors, (3), 4 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) Word has length 138 [2022-11-16 12:46:54,208 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:46:54,212 INFO L225 Difference]: With dead ends: 3572 [2022-11-16 12:46:54,212 INFO L226 Difference]: Without dead ends: 3572 [2022-11-16 12:46:54,213 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 305 GetRequests, 180 SyntacticMatches, 89 SemanticMatches, 36 ConstructedPredicates, 11 IntricatePredicates, 0 DeprecatedPredicates, 584 ImplicationChecksByTransitivity, 7.4s TimeCoverageRelationStatistics Valid=126, Invalid=583, Unknown=37, NotChecked=660, Total=1406 [2022-11-16 12:46:54,214 INFO L413 NwaCegarLoop]: 1149 mSDtfsCounter, 1808 mSDsluCounter, 8305 mSDsCounter, 0 mSdLazyCounter, 7038 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 16.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1813 SdHoareTripleChecker+Valid, 9454 SdHoareTripleChecker+Invalid, 12690 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 7038 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 5619 IncrementalHoareTripleChecker+Unchecked, 18.9s IncrementalHoareTripleChecker+Time [2022-11-16 12:46:54,215 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1813 Valid, 9454 Invalid, 12690 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [33 Valid, 7038 Invalid, 0 Unknown, 5619 Unchecked, 18.9s Time] [2022-11-16 12:46:54,218 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3572 states. [2022-11-16 12:46:54,248 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3572 to 2011. [2022-11-16 12:46:54,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2011 states, 1458 states have (on average 1.8017832647462277) internal successors, (2627), 1968 states have internal predecessors, (2627), 34 states have call successors, (34), 15 states have call predecessors, (34), 16 states have return successors, (37), 30 states have call predecessors, (37), 34 states have call successors, (37) [2022-11-16 12:46:54,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2011 states to 2011 states and 2698 transitions. [2022-11-16 12:46:54,256 INFO L78 Accepts]: Start accepts. Automaton has 2011 states and 2698 transitions. Word has length 138 [2022-11-16 12:46:54,256 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:46:54,256 INFO L495 AbstractCegarLoop]: Abstraction has 2011 states and 2698 transitions. [2022-11-16 12:46:54,257 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 15 states have (on average 6.333333333333333) internal successors, (95), 15 states have internal predecessors, (95), 3 states have call successors, (3), 3 states have call predecessors, (3), 4 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2022-11-16 12:46:54,257 INFO L276 IsEmpty]: Start isEmpty. Operand 2011 states and 2698 transitions. [2022-11-16 12:46:54,258 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2022-11-16 12:46:54,258 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:46:54,258 INFO L195 NwaCegarLoop]: trace histogram [44, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:46:54,290 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_445b0072-55b1-4ac0-a568-1f3b2dbcbce7/bin/uautomizer-tPACEb0tL8/cvc4 --incremental --print-success --lang smt (36)] Forceful destruction successful, exit code 0 [2022-11-16 12:46:54,515 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_445b0072-55b1-4ac0-a568-1f3b2dbcbce7/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 (35)] Forceful destruction successful, exit code 0 [2022-11-16 12:46:54,682 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_445b0072-55b1-4ac0-a568-1f3b2dbcbce7/bin/uautomizer-tPACEb0tL8/cvc4 --incremental --print-success --lang smt,35 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_445b0072-55b1-4ac0-a568-1f3b2dbcbce7/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 12:46:54,682 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr87REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alt_mallocErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_mallocErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_freeErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 631 more)] === [2022-11-16 12:46:54,682 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:46:54,682 INFO L85 PathProgramCache]: Analyzing trace with hash 2031259998, now seen corresponding path program 1 times [2022-11-16 12:46:54,683 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 12:46:54,683 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1250529842] [2022-11-16 12:46:54,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:46:54,684 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 12:46:54,684 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_445b0072-55b1-4ac0-a568-1f3b2dbcbce7/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 12:46:54,685 INFO L229 MonitoredProcess]: Starting monitored process 37 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_445b0072-55b1-4ac0-a568-1f3b2dbcbce7/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 12:46:54,688 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_445b0072-55b1-4ac0-a568-1f3b2dbcbce7/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 (37)] Waiting until timeout for monitored process [2022-11-16 12:46:56,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:46:56,360 INFO L263 TraceCheckSpWp]: Trace formula consists of 939 conjuncts, 126 conjunts are in the unsatisfiable core [2022-11-16 12:46:56,376 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:46:56,386 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 0 case distinctions, treesize of input 6 treesize of output 7 [2022-11-16 12:46:56,918 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 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-16 12:46:56,990 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-16 12:46:56,990 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2022-11-16 12:46:57,050 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-16 12:46:57,065 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-16 12:46:57,292 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 10 [2022-11-16 12:46:57,302 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-11-16 12:47:00,710 WARN L855 $PredicateComparison]: unable to prove that (and (exists ((v_arrayElimCell_94 (_ BitVec 32))) (= (select |c_#length| v_arrayElimCell_94) (_ bv44 32))) (exists ((v_ArrVal_7830 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_#memory_$Pointer$.offset| (store |c_old(#memory_$Pointer$.offset)| |c_alt_bzero_#in~a#1.base| v_ArrVal_7830))) (exists ((v_ArrVal_7831 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |c_alt_bzero_#in~a#1.base| v_ArrVal_7831)))) is different from true [2022-11-16 12:47:00,780 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-11-16 12:47:00,781 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 46 treesize of output 45 [2022-11-16 12:47:00,796 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 24 [2022-11-16 12:47:01,029 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-11-16 12:47:01,030 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 46 treesize of output 45 [2022-11-16 12:47:01,051 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 24 [2022-11-16 12:47:01,221 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-11-16 12:47:01,222 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 46 treesize of output 45 [2022-11-16 12:47:01,237 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 24 [2022-11-16 12:47:01,279 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-11-16 12:47:01,282 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2022-11-16 12:47:01,348 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 43 refuted. 0 times theorem prover too weak. 903 trivial. 44 not checked. [2022-11-16 12:47:01,348 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:47:01,657 WARN L833 $PredicateComparison]: unable to prove that (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (and (forall ((v_ArrVal_7834 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem75#1.base| v_ArrVal_7834) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (bvule (bvadd (_ bv8 32) .cse0) (bvadd .cse0 (_ bv12 32))))) (forall ((v_ArrVal_7835 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7834 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (bvadd (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem75#1.base| v_ArrVal_7834) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) (_ bv12 32)) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem75#1.base| v_ArrVal_7835) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))))) is different from false [2022-11-16 12:47:01,713 WARN L833 $PredicateComparison]: unable to prove that (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (let ((.cse0 (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (and (forall ((v_ArrVal_7835 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7834 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (bvadd (select (select (store |c_#memory_$Pointer$.offset| .cse0 v_ArrVal_7834) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) (_ bv12 32)) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| .cse0 v_ArrVal_7835) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))) (forall ((v_ArrVal_7834 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse2 (select (select (store |c_#memory_$Pointer$.offset| .cse0 v_ArrVal_7834) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (bvule (bvadd (_ bv8 32) .cse2) (bvadd .cse2 (_ bv12 32)))))))) is different from false [2022-11-16 12:47:01,804 WARN L833 $PredicateComparison]: unable to prove that (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (and (forall ((v_ArrVal_7835 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7834 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7833 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7832 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse2 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem74#1.base| v_ArrVal_7832))) (let ((.cse0 (select (select .cse2 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (bvule (bvadd (select (select (store (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem74#1.base| v_ArrVal_7833) .cse0 v_ArrVal_7834) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) (_ bv12 32)) (select |c_#length| (select (select (store .cse2 .cse0 v_ArrVal_7835) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))))) (forall ((v_ArrVal_7834 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7833 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7832 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse3 (select (select (store (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem74#1.base| v_ArrVal_7833) (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem74#1.base| v_ArrVal_7832) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_7834) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (bvule (bvadd .cse3 (_ bv8 32)) (bvadd .cse3 (_ bv12 32))))))) is different from false [2022-11-16 12:47:05,976 WARN L833 $PredicateComparison]: unable to prove that (let ((.cse3 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (and (forall ((v_ArrVal_7927 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7926 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7834 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7833 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7832 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (let ((.cse2 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem73#1.base| v_ArrVal_7926))) (let ((.cse1 (select (select .cse2 |c_ULTIMATE.start_main_~user~0#1.base|) .cse3))) (store (store (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem73#1.base| v_ArrVal_7927) .cse1 v_ArrVal_7833) (select (select (store .cse2 .cse1 v_ArrVal_7832) |c_ULTIMATE.start_main_~user~0#1.base|) .cse3) v_ArrVal_7834))) |c_ULTIMATE.start_main_~user~0#1.base|) .cse3))) (bvule (bvadd (_ bv8 32) .cse0) (bvadd .cse0 (_ bv12 32))))) (forall ((v_ArrVal_7927 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7926 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7835 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7834 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7833 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7832 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse7 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem73#1.base| v_ArrVal_7926))) (let ((.cse4 (select (select .cse7 |c_ULTIMATE.start_main_~user~0#1.base|) .cse3))) (let ((.cse6 (store .cse7 .cse4 v_ArrVal_7832))) (let ((.cse5 (select (select .cse6 |c_ULTIMATE.start_main_~user~0#1.base|) .cse3))) (bvule (bvadd (select (select (store (store (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem73#1.base| v_ArrVal_7927) .cse4 v_ArrVal_7833) .cse5 v_ArrVal_7834) |c_ULTIMATE.start_main_~user~0#1.base|) .cse3) (_ bv12 32)) (select |c_#length| (select (select (store .cse6 .cse5 v_ArrVal_7835) |c_ULTIMATE.start_main_~user~0#1.base|) .cse3)))))))))) is different from false [2022-11-16 12:47:05,992 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 12:47:05,992 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1250529842] [2022-11-16 12:47:05,992 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1250529842] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:47:05,992 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [721808780] [2022-11-16 12:47:05,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:47:05,992 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-16 12:47:05,992 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_445b0072-55b1-4ac0-a568-1f3b2dbcbce7/bin/uautomizer-tPACEb0tL8/cvc4 [2022-11-16 12:47:05,993 INFO L229 MonitoredProcess]: Starting monitored process 38 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_445b0072-55b1-4ac0-a568-1f3b2dbcbce7/bin/uautomizer-tPACEb0tL8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-16 12:47:05,998 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_445b0072-55b1-4ac0-a568-1f3b2dbcbce7/bin/uautomizer-tPACEb0tL8/cvc4 --incremental --print-success --lang smt (38)] Waiting until timeout for monitored process [2022-11-16 12:49:18,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:49:18,844 INFO L263 TraceCheckSpWp]: Trace formula consists of 939 conjuncts, 125 conjunts are in the unsatisfiable core [2022-11-16 12:49:18,861 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:49:18,867 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 0 case distinctions, treesize of input 6 treesize of output 7 [2022-11-16 12:49:19,465 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 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-16 12:49:19,533 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-16 12:49:19,534 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2022-11-16 12:49:19,703 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-16 12:49:19,727 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-16 12:49:20,142 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 10 [2022-11-16 12:49:20,151 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 3 [2022-11-16 12:49:24,942 WARN L855 $PredicateComparison]: unable to prove that (and (exists ((v_arrayElimCell_94 (_ BitVec 32))) (= (select |c_#length| v_arrayElimCell_94) (_ bv44 32))) (exists ((v_ArrVal_8426 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_#memory_$Pointer$.offset| (store |c_old(#memory_$Pointer$.offset)| |c_alt_bzero_#in~a#1.base| v_ArrVal_8426))) (exists ((v_ArrVal_8427 (Array (_ BitVec 32) (_ BitVec 32)))) (= (store |c_old(#memory_$Pointer$.base)| |c_alt_bzero_#in~a#1.base| v_ArrVal_8427) |c_#memory_$Pointer$.base|))) is different from true [2022-11-16 12:49:25,049 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-11-16 12:49:25,050 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 46 treesize of output 45 [2022-11-16 12:49:25,075 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 24 [2022-11-16 12:49:25,511 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-11-16 12:49:25,511 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 46 treesize of output 45 [2022-11-16 12:49:25,522 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 24 [2022-11-16 12:49:25,814 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-11-16 12:49:25,815 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 46 treesize of output 45 [2022-11-16 12:49:25,839 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 24 [2022-11-16 12:49:25,881 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2022-11-16 12:49:25,887 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 13 [2022-11-16 12:49:25,903 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 43 refuted. 0 times theorem prover too weak. 903 trivial. 44 not checked. [2022-11-16 12:49:25,903 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:49:26,013 WARN L833 $PredicateComparison]: unable to prove that (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (and (forall ((v_ArrVal_8431 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem75#1.base| v_ArrVal_8431) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (bvule (bvadd (_ bv8 32) .cse0) (bvadd .cse0 (_ bv12 32))))) (forall ((v_ArrVal_8430 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8431 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (bvadd (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem75#1.base| v_ArrVal_8431) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) (_ bv12 32)) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem75#1.base| v_ArrVal_8430) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))))) is different from false [2022-11-16 12:49:26,070 WARN L833 $PredicateComparison]: unable to prove that (let ((.cse2 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (let ((.cse1 (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (and (forall ((v_ArrVal_8431 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (store |c_#memory_$Pointer$.offset| .cse1 v_ArrVal_8431) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (bvule (bvadd .cse0 (_ bv8 32)) (bvadd .cse0 (_ bv12 32))))) (forall ((v_ArrVal_8430 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8431 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (bvadd (select (select (store |c_#memory_$Pointer$.offset| .cse1 v_ArrVal_8431) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) (_ bv12 32)) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| .cse1 v_ArrVal_8430) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))))))) is different from false [2022-11-16 12:49:27,301 WARN L833 $PredicateComparison]: unable to prove that (let ((.cse2 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (let ((.cse0 (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (and (forall ((v_ArrVal_8430 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8429 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8428 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8431 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse3 (store |c_#memory_$Pointer$.base| .cse0 v_ArrVal_8429))) (let ((.cse1 (select (select .cse3 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (bvule (bvadd (_ bv12 32) (select (select (store (store |c_#memory_$Pointer$.offset| .cse0 v_ArrVal_8428) .cse1 v_ArrVal_8431) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2)) (select |c_#length| (select (select (store .cse3 .cse1 v_ArrVal_8430) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2)))))) (forall ((v_ArrVal_8429 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8428 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8431 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse4 (select (select (store (store |c_#memory_$Pointer$.offset| .cse0 v_ArrVal_8428) (select (select (store |c_#memory_$Pointer$.base| .cse0 v_ArrVal_8429) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) v_ArrVal_8431) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (bvule (bvadd (_ bv8 32) .cse4) (bvadd (_ bv12 32) .cse4))))))) is different from false [2022-11-16 12:49:29,532 WARN L833 $PredicateComparison]: unable to prove that (let ((.cse2 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (and (forall ((v_ArrVal_8430 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8429 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8428 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8523 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8522 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8431 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse4 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem73#1.base| v_ArrVal_8522))) (let ((.cse0 (select (select .cse4 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (let ((.cse3 (store .cse4 .cse0 v_ArrVal_8429))) (let ((.cse1 (select (select .cse3 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (bvule (bvadd (select (select (store (store (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem73#1.base| v_ArrVal_8523) .cse0 v_ArrVal_8428) .cse1 v_ArrVal_8431) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) (_ bv12 32)) (select |c_#length| (select (select (store .cse3 .cse1 v_ArrVal_8430) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2)))))))) (forall ((v_ArrVal_8429 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8428 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8523 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8522 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8431 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse5 (select (select (let ((.cse7 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem73#1.base| v_ArrVal_8522))) (let ((.cse6 (select (select .cse7 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (store (store (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem73#1.base| v_ArrVal_8523) .cse6 v_ArrVal_8428) (select (select (store .cse7 .cse6 v_ArrVal_8429) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) v_ArrVal_8431))) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (bvule (bvadd (_ bv8 32) .cse5) (bvadd .cse5 (_ bv12 32))))))) is different from false [2022-11-16 12:49:29,552 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [721808780] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:49:29,552 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-16 12:49:29,552 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16] total 24 [2022-11-16 12:49:29,552 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [561333210] [2022-11-16 12:49:29,553 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-16 12:49:29,553 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-11-16 12:49:29,553 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 12:49:29,554 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-11-16 12:49:29,554 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=108, Invalid=596, Unknown=38, NotChecked=590, Total=1332 [2022-11-16 12:49:29,554 INFO L87 Difference]: Start difference. First operand 2011 states and 2698 transitions. Second operand has 25 states, 22 states have (on average 7.409090909090909) internal successors, (163), 21 states have internal predecessors, (163), 5 states have call successors, (5), 3 states have call predecessors, (5), 4 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2022-11-16 12:49:33,630 WARN L855 $PredicateComparison]: unable to prove that (and (exists ((v_arrayElimCell_94 (_ BitVec 32))) (= (select |c_#length| v_arrayElimCell_94) (_ bv44 32))) (exists ((v_ArrVal_8426 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_#memory_$Pointer$.offset| (store |c_old(#memory_$Pointer$.offset)| |c_alt_bzero_#in~a#1.base| v_ArrVal_8426))) (exists ((v_ArrVal_7830 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_#memory_$Pointer$.offset| (store |c_old(#memory_$Pointer$.offset)| |c_alt_bzero_#in~a#1.base| v_ArrVal_7830))) (exists ((v_ArrVal_7831 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |c_alt_bzero_#in~a#1.base| v_ArrVal_7831))) (exists ((v_ArrVal_8427 (Array (_ BitVec 32) (_ BitVec 32)))) (= (store |c_old(#memory_$Pointer$.base)| |c_alt_bzero_#in~a#1.base| v_ArrVal_8427) |c_#memory_$Pointer$.base|))) is different from true [2022-11-16 12:50:40,097 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:50:40,097 INFO L93 Difference]: Finished difference Result 3332 states and 4404 transitions. [2022-11-16 12:50:40,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-11-16 12:50:40,098 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 22 states have (on average 7.409090909090909) internal successors, (163), 21 states have internal predecessors, (163), 5 states have call successors, (5), 3 states have call predecessors, (5), 4 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) Word has length 138 [2022-11-16 12:50:40,099 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:50:40,102 INFO L225 Difference]: With dead ends: 3332 [2022-11-16 12:50:40,102 INFO L226 Difference]: Without dead ends: 3332 [2022-11-16 12:50:40,103 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 307 GetRequests, 172 SyntacticMatches, 89 SemanticMatches, 46 ConstructedPredicates, 11 IntricatePredicates, 0 DeprecatedPredicates, 900 ImplicationChecksByTransitivity, 15.4s TimeCoverageRelationStatistics Valid=197, Invalid=1135, Unknown=44, NotChecked=880, Total=2256 [2022-11-16 12:50:40,103 INFO L413 NwaCegarLoop]: 1102 mSDtfsCounter, 2157 mSDsluCounter, 10748 mSDsCounter, 0 mSdLazyCounter, 16228 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 60.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2162 SdHoareTripleChecker+Valid, 11850 SdHoareTripleChecker+Invalid, 23386 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 16228 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 7125 IncrementalHoareTripleChecker+Unchecked, 67.2s IncrementalHoareTripleChecker+Time [2022-11-16 12:50:40,104 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2162 Valid, 11850 Invalid, 23386 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [33 Valid, 16228 Invalid, 0 Unknown, 7125 Unchecked, 67.2s Time] [2022-11-16 12:50:40,107 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3332 states. [2022-11-16 12:50:40,130 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3332 to 2010. [2022-11-16 12:50:40,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2010 states, 1458 states have (on average 1.800411522633745) internal successors, (2625), 1967 states have internal predecessors, (2625), 34 states have call successors, (34), 15 states have call predecessors, (34), 16 states have return successors, (37), 30 states have call predecessors, (37), 34 states have call successors, (37) [2022-11-16 12:50:40,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2010 states to 2010 states and 2696 transitions. [2022-11-16 12:50:40,137 INFO L78 Accepts]: Start accepts. Automaton has 2010 states and 2696 transitions. Word has length 138 [2022-11-16 12:50:40,138 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:50:40,138 INFO L495 AbstractCegarLoop]: Abstraction has 2010 states and 2696 transitions. [2022-11-16 12:50:40,138 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 22 states have (on average 7.409090909090909) internal successors, (163), 21 states have internal predecessors, (163), 5 states have call successors, (5), 3 states have call predecessors, (5), 4 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2022-11-16 12:50:40,138 INFO L276 IsEmpty]: Start isEmpty. Operand 2010 states and 2696 transitions. [2022-11-16 12:50:40,139 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2022-11-16 12:50:40,139 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:50:40,140 INFO L195 NwaCegarLoop]: trace histogram [44, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:50:40,213 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_445b0072-55b1-4ac0-a568-1f3b2dbcbce7/bin/uautomizer-tPACEb0tL8/cvc4 --incremental --print-success --lang smt (38)] Forceful destruction successful, exit code 0 [2022-11-16 12:50:40,383 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_445b0072-55b1-4ac0-a568-1f3b2dbcbce7/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 (37)] Forceful destruction successful, exit code 0 [2022-11-16 12:50:40,554 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_445b0072-55b1-4ac0-a568-1f3b2dbcbce7/bin/uautomizer-tPACEb0tL8/cvc4 --incremental --print-success --lang smt,37 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_445b0072-55b1-4ac0-a568-1f3b2dbcbce7/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 12:50:40,554 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr90REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alt_mallocErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_mallocErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_freeErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 631 more)] === [2022-11-16 12:50:40,554 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:50:40,555 INFO L85 PathProgramCache]: Analyzing trace with hash 1472678910, now seen corresponding path program 1 times [2022-11-16 12:50:40,556 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 12:50:40,556 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [584598464] [2022-11-16 12:50:40,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:50:40,556 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 12:50:40,556 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_445b0072-55b1-4ac0-a568-1f3b2dbcbce7/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 12:50:40,558 INFO L229 MonitoredProcess]: Starting monitored process 39 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_445b0072-55b1-4ac0-a568-1f3b2dbcbce7/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 12:50:40,605 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_445b0072-55b1-4ac0-a568-1f3b2dbcbce7/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 (39)] Waiting until timeout for monitored process [2022-11-16 12:50:42,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:50:42,733 INFO L263 TraceCheckSpWp]: Trace formula consists of 968 conjuncts, 70 conjunts are in the unsatisfiable core [2022-11-16 12:50:42,744 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:50:42,753 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 0 case distinctions, treesize of input 6 treesize of output 7 [2022-11-16 12:50:43,303 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-11-16 12:50:43,303 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 19 treesize of output 27 [2022-11-16 12:50:43,385 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-16 12:50:43,651 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 12 [2022-11-16 12:50:48,720 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-11-16 12:50:48,720 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 36 treesize of output 37 [2022-11-16 12:50:49,059 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-11-16 12:50:49,059 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 36 treesize of output 37 [2022-11-16 12:50:49,312 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-11-16 12:50:49,312 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 36 treesize of output 37 [2022-11-16 12:50:49,555 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-11-16 12:50:49,556 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 36 treesize of output 37 [2022-11-16 12:50:49,602 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 15 [2022-11-16 12:50:49,726 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 87 refuted. 0 times theorem prover too weak. 903 trivial. 0 not checked. [2022-11-16 12:50:49,726 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:50:49,934 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_8995 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (select |c_#valid| (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem76#1.base| v_ArrVal_8995) |c_ULTIMATE.start_main_~user~0#1.base|) (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (_ bv1 1)))) is different from false [2022-11-16 12:50:50,437 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_8995 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8994 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (_ bv1 1) (select |c_#valid| (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (let ((.cse0 (store |c_#memory_$Pointer$.base| (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_8994))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_8995)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))))) is different from false [2022-11-16 12:50:50,481 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_8995 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8994 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8993 (Array (_ BitVec 32) (_ BitVec 32)))) (= (bvadd (_ bv1 1) (select |c_#valid| (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (let ((.cse0 (let ((.cse2 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem74#1.base| v_ArrVal_8993))) (store .cse2 (select (select .cse2 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_8994)))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_8995)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))) (_ bv0 1))) is different from false [2022-11-16 12:50:50,515 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_8995 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8994 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8993 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (_ bv1 1) (select |c_#valid| (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (let ((.cse0 (let ((.cse2 (store |c_#memory_$Pointer$.base| (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_8993))) (store .cse2 (select (select .cse2 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_8994)))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_8995)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))))) is different from false [2022-11-16 12:50:51,182 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_9041 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8995 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8994 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8993 (Array (_ BitVec 32) (_ BitVec 32)))) (= (bvadd (select |c_#valid| (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (let ((.cse0 (let ((.cse2 (let ((.cse3 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem73#1.base| v_ArrVal_9041))) (store .cse3 (select (select .cse3 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_8993)))) (store .cse2 (select (select .cse2 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_8994)))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_8995)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (_ bv1 1)) (_ bv0 1))) is different from false [2022-11-16 12:50:51,191 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 12:50:51,192 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [584598464] [2022-11-16 12:50:51,192 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [584598464] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:50:51,192 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [501337824] [2022-11-16 12:50:51,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:50:51,192 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-16 12:50:51,192 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_445b0072-55b1-4ac0-a568-1f3b2dbcbce7/bin/uautomizer-tPACEb0tL8/cvc4 [2022-11-16 12:50:51,194 INFO L229 MonitoredProcess]: Starting monitored process 40 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_445b0072-55b1-4ac0-a568-1f3b2dbcbce7/bin/uautomizer-tPACEb0tL8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-16 12:50:51,197 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_445b0072-55b1-4ac0-a568-1f3b2dbcbce7/bin/uautomizer-tPACEb0tL8/cvc4 --incremental --print-success --lang smt (40)] Waiting until timeout for monitored process [2022-11-16 12:51:02,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:51:02,796 INFO L263 TraceCheckSpWp]: Trace formula consists of 968 conjuncts, 72 conjunts are in the unsatisfiable core [2022-11-16 12:51:02,808 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:51:02,820 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 0 case distinctions, treesize of input 6 treesize of output 7 [2022-11-16 12:51:03,387 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-11-16 12:51:03,387 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 19 treesize of output 27 [2022-11-16 12:51:03,423 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-16 12:51:03,576 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 12 [2022-11-16 12:51:08,589 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-11-16 12:51:08,590 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 36 treesize of output 37 [2022-11-16 12:51:08,795 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-11-16 12:51:08,796 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 36 treesize of output 37 [2022-11-16 12:51:08,914 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-11-16 12:51:08,914 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 36 treesize of output 37 [2022-11-16 12:51:09,031 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-11-16 12:51:09,032 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 36 treesize of output 37 [2022-11-16 12:51:09,077 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 15 [2022-11-16 12:51:09,098 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 87 refuted. 0 times theorem prover too weak. 903 trivial. 0 not checked. [2022-11-16 12:51:09,098 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:51:09,139 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_9513 (Array (_ BitVec 32) (_ BitVec 32)))) (= (bvadd (select |c_#valid| (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem76#1.base| v_ArrVal_9513) |c_ULTIMATE.start_main_~user~0#1.base|) (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (_ bv1 1)) (_ bv0 1))) is different from false [2022-11-16 12:51:09,163 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_9513 (Array (_ BitVec 32) (_ BitVec 32)))) (= (bvadd (select |c_#valid| (let ((.cse0 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (store |c_#memory_$Pointer$.base| (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse0) v_ArrVal_9513) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0))) (_ bv1 1)) (_ bv0 1))) is different from false [2022-11-16 12:51:09,199 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_9513 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_9512 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (select |c_#valid| (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (let ((.cse0 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem75#1.base| v_ArrVal_9512))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_9513)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (_ bv1 1)))) is different from false [2022-11-16 12:51:09,227 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_9513 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_9512 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (select |c_#valid| (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (let ((.cse0 (store |c_#memory_$Pointer$.base| (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_9512))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_9513)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (_ bv1 1)))) is different from false [2022-11-16 12:51:09,271 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_9513 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_9512 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_9511 (Array (_ BitVec 32) (_ BitVec 32)))) (= (bvadd (_ bv1 1) (select |c_#valid| (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (let ((.cse0 (let ((.cse2 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem74#1.base| v_ArrVal_9511))) (store .cse2 (select (select .cse2 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_9512)))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_9513)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))) (_ bv0 1))) is different from false [2022-11-16 12:51:09,305 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_9513 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_9512 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_9511 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (select |c_#valid| (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (let ((.cse0 (let ((.cse2 (store |c_#memory_$Pointer$.base| (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_9511))) (store .cse2 (select (select .cse2 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_9512)))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_9513)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (_ bv1 1)))) is different from false [2022-11-16 12:51:10,006 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_9559 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_9513 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_9512 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_9511 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (select |c_#valid| (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (let ((.cse0 (let ((.cse2 (let ((.cse3 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem73#1.base| v_ArrVal_9559))) (store .cse3 (select (select .cse3 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_9511)))) (store .cse2 (select (select .cse2 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_9512)))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_9513)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (_ bv1 1)))) is different from false [2022-11-16 12:51:10,014 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [501337824] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:51:10,014 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-16 12:51:10,014 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16] total 16 [2022-11-16 12:51:10,015 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1588086648] [2022-11-16 12:51:10,015 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-16 12:51:10,016 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-11-16 12:51:10,016 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 12:51:10,016 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-11-16 12:51:10,017 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=341, Unknown=39, NotChecked=588, Total=1056 [2022-11-16 12:51:10,017 INFO L87 Difference]: Start difference. First operand 2010 states and 2696 transitions. Second operand has 17 states, 15 states have (on average 6.266666666666667) internal successors, (94), 15 states have internal predecessors, (94), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-16 12:51:40,559 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:51:40,560 INFO L93 Difference]: Finished difference Result 3570 states and 4744 transitions. [2022-11-16 12:51:40,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-11-16 12:51:40,560 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 15 states have (on average 6.266666666666667) internal successors, (94), 15 states have internal predecessors, (94), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 141 [2022-11-16 12:51:40,561 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:51:40,565 INFO L225 Difference]: With dead ends: 3570 [2022-11-16 12:51:40,566 INFO L226 Difference]: Without dead ends: 3570 [2022-11-16 12:51:40,567 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 315 GetRequests, 187 SyntacticMatches, 89 SemanticMatches, 39 ConstructedPredicates, 12 IntricatePredicates, 0 DeprecatedPredicates, 744 ImplicationChecksByTransitivity, 8.7s TimeCoverageRelationStatistics Valid=145, Invalid=667, Unknown=48, NotChecked=780, Total=1640 [2022-11-16 12:51:40,567 INFO L413 NwaCegarLoop]: 1155 mSDtfsCounter, 1798 mSDsluCounter, 10432 mSDsCounter, 0 mSdLazyCounter, 7020 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 26.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1803 SdHoareTripleChecker+Valid, 11587 SdHoareTripleChecker+Invalid, 14041 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 7020 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 6988 IncrementalHoareTripleChecker+Unchecked, 29.4s IncrementalHoareTripleChecker+Time [2022-11-16 12:51:40,568 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1803 Valid, 11587 Invalid, 14041 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [33 Valid, 7020 Invalid, 0 Unknown, 6988 Unchecked, 29.4s Time] [2022-11-16 12:51:40,572 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3570 states. [2022-11-16 12:51:40,600 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3570 to 2009. [2022-11-16 12:51:40,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2009 states, 1458 states have (on average 1.799039780521262) internal successors, (2623), 1966 states have internal predecessors, (2623), 34 states have call successors, (34), 15 states have call predecessors, (34), 16 states have return successors, (37), 30 states have call predecessors, (37), 34 states have call successors, (37) [2022-11-16 12:51:40,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2009 states to 2009 states and 2694 transitions. [2022-11-16 12:51:40,607 INFO L78 Accepts]: Start accepts. Automaton has 2009 states and 2694 transitions. Word has length 141 [2022-11-16 12:51:40,608 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:51:40,608 INFO L495 AbstractCegarLoop]: Abstraction has 2009 states and 2694 transitions. [2022-11-16 12:51:40,608 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 15 states have (on average 6.266666666666667) internal successors, (94), 15 states have internal predecessors, (94), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-16 12:51:40,608 INFO L276 IsEmpty]: Start isEmpty. Operand 2009 states and 2694 transitions. [2022-11-16 12:51:40,609 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2022-11-16 12:51:40,610 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:51:40,610 INFO L195 NwaCegarLoop]: trace histogram [44, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:51:40,642 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_445b0072-55b1-4ac0-a568-1f3b2dbcbce7/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 (39)] Forceful destruction successful, exit code 0