./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/array-memsafety/array02-alloca-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_c04a0f81-8b6c-4bc8-9c3a-7f4603344bba/bin/uautomizer-tPACEb0tL8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c04a0f81-8b6c-4bc8-9c3a-7f4603344bba/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_c04a0f81-8b6c-4bc8-9c3a-7f4603344bba/bin/uautomizer-tPACEb0tL8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c04a0f81-8b6c-4bc8-9c3a-7f4603344bba/bin/uautomizer-tPACEb0tL8/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/array-memsafety/array02-alloca-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c04a0f81-8b6c-4bc8-9c3a-7f4603344bba/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_c04a0f81-8b6c-4bc8-9c3a-7f4603344bba/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 6376f52a263bde0c709cb35a0d040626ae764c5527f8161f54a95df7802768d2 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-e04fb08 [2022-11-16 11:26:17,559 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-16 11:26:17,567 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-16 11:26:17,624 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-16 11:26:17,631 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-16 11:26:17,633 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-16 11:26:17,636 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-16 11:26:17,642 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-16 11:26:17,646 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-16 11:26:17,648 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-16 11:26:17,652 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-16 11:26:17,655 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-16 11:26:17,657 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-16 11:26:17,662 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-16 11:26:17,664 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-16 11:26:17,666 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-16 11:26:17,669 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-16 11:26:17,671 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-16 11:26:17,673 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-16 11:26:17,675 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-16 11:26:17,677 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-16 11:26:17,679 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-16 11:26:17,681 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-16 11:26:17,683 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-16 11:26:17,689 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-16 11:26:17,697 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-16 11:26:17,698 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-16 11:26:17,699 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-16 11:26:17,701 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-16 11:26:17,703 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-16 11:26:17,703 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-16 11:26:17,705 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-16 11:26:17,707 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-16 11:26:17,709 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-16 11:26:17,712 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-16 11:26:17,713 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-16 11:26:17,714 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-16 11:26:17,714 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-16 11:26:17,714 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-16 11:26:17,716 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-16 11:26:17,717 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-16 11:26:17,718 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c04a0f81-8b6c-4bc8-9c3a-7f4603344bba/bin/uautomizer-tPACEb0tL8/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2022-11-16 11:26:17,744 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-16 11:26:17,745 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-16 11:26:17,745 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-16 11:26:17,745 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-16 11:26:17,746 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-16 11:26:17,746 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-16 11:26:17,747 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-16 11:26:17,748 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-16 11:26:17,748 INFO L138 SettingsManager]: * Use SBE=true [2022-11-16 11:26:17,748 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-16 11:26:17,749 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-16 11:26:17,749 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-16 11:26:17,749 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-16 11:26:17,749 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-16 11:26:17,749 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-16 11:26:17,750 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-11-16 11:26:17,750 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-11-16 11:26:17,750 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-11-16 11:26:17,750 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-16 11:26:17,751 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-16 11:26:17,751 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-16 11:26:17,751 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-16 11:26:17,751 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-16 11:26:17,752 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-16 11:26:17,752 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-16 11:26:17,752 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 11:26:17,752 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-16 11:26:17,753 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-16 11:26:17,753 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-16 11:26:17,753 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-16 11:26:17,753 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_c04a0f81-8b6c-4bc8-9c3a-7f4603344bba/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c04a0f81-8b6c-4bc8-9c3a-7f4603344bba/bin/uautomizer-tPACEb0tL8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6376f52a263bde0c709cb35a0d040626ae764c5527f8161f54a95df7802768d2 [2022-11-16 11:26:18,183 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-16 11:26:18,217 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-16 11:26:18,239 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-16 11:26:18,241 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-16 11:26:18,243 INFO L275 PluginConnector]: CDTParser initialized [2022-11-16 11:26:18,244 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c04a0f81-8b6c-4bc8-9c3a-7f4603344bba/bin/uautomizer-tPACEb0tL8/../../sv-benchmarks/c/array-memsafety/array02-alloca-2.i [2022-11-16 11:26:18,335 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c04a0f81-8b6c-4bc8-9c3a-7f4603344bba/bin/uautomizer-tPACEb0tL8/data/c4fcee680/0a10adde7e3940388c889a3193512c6e/FLAG4e82eb206 [2022-11-16 11:26:19,064 INFO L306 CDTParser]: Found 1 translation units. [2022-11-16 11:26:19,064 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c04a0f81-8b6c-4bc8-9c3a-7f4603344bba/sv-benchmarks/c/array-memsafety/array02-alloca-2.i [2022-11-16 11:26:19,084 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c04a0f81-8b6c-4bc8-9c3a-7f4603344bba/bin/uautomizer-tPACEb0tL8/data/c4fcee680/0a10adde7e3940388c889a3193512c6e/FLAG4e82eb206 [2022-11-16 11:26:19,289 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c04a0f81-8b6c-4bc8-9c3a-7f4603344bba/bin/uautomizer-tPACEb0tL8/data/c4fcee680/0a10adde7e3940388c889a3193512c6e [2022-11-16 11:26:19,293 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-16 11:26:19,295 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-16 11:26:19,298 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-16 11:26:19,299 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-16 11:26:19,304 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-16 11:26:19,305 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 11:26:19" (1/1) ... [2022-11-16 11:26:19,307 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3e1ac672 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:26:19, skipping insertion in model container [2022-11-16 11:26:19,307 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 11:26:19" (1/1) ... [2022-11-16 11:26:19,318 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-16 11:26:19,357 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-16 11:26:19,787 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 11:26:19,805 ERROR L326 MainTranslator]: Unsupported Syntax: Found a cast between two array/pointer types of different sizes while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) [2022-11-16 11:26:19,806 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@666ab139 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:26:19, skipping insertion in model container [2022-11-16 11:26:19,807 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-16 11:26:19,808 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2022-11-16 11:26:19,811 INFO L158 Benchmark]: Toolchain (without parser) took 514.63ms. Allocated memory is still 136.3MB. Free memory was 99.8MB in the beginning and 111.1MB in the end (delta: -11.3MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-11-16 11:26:19,813 INFO L158 Benchmark]: CDTParser took 0.33ms. Allocated memory is still 136.3MB. Free memory was 117.4MB in the beginning and 117.2MB in the end (delta: 143.1kB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-16 11:26:19,816 INFO L158 Benchmark]: CACSL2BoogieTranslator took 509.65ms. Allocated memory is still 136.3MB. Free memory was 99.5MB in the beginning and 111.1MB in the end (delta: -11.6MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-11-16 11:26:19,818 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.33ms. Allocated memory is still 136.3MB. Free memory was 117.4MB in the beginning and 117.2MB in the end (delta: 143.1kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 509.65ms. Allocated memory is still 136.3MB. Free memory was 99.5MB in the beginning and 111.1MB in the end (delta: -11.6MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 533]: 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_c04a0f81-8b6c-4bc8-9c3a-7f4603344bba/bin/uautomizer-tPACEb0tL8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c04a0f81-8b6c-4bc8-9c3a-7f4603344bba/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_c04a0f81-8b6c-4bc8-9c3a-7f4603344bba/bin/uautomizer-tPACEb0tL8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c04a0f81-8b6c-4bc8-9c3a-7f4603344bba/bin/uautomizer-tPACEb0tL8/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/array-memsafety/array02-alloca-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c04a0f81-8b6c-4bc8-9c3a-7f4603344bba/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_c04a0f81-8b6c-4bc8-9c3a-7f4603344bba/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 6376f52a263bde0c709cb35a0d040626ae764c5527f8161f54a95df7802768d2 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-e04fb08 [2022-11-16 11:26:22,623 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-16 11:26:22,627 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-16 11:26:22,684 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-16 11:26:22,685 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-16 11:26:22,691 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-16 11:26:22,695 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-16 11:26:22,700 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-16 11:26:22,705 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-16 11:26:22,710 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-16 11:26:22,712 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-16 11:26:22,717 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-16 11:26:22,718 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-16 11:26:22,725 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-16 11:26:22,727 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-16 11:26:22,730 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-16 11:26:22,732 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-16 11:26:22,735 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-16 11:26:22,742 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-16 11:26:22,745 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-16 11:26:22,755 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-16 11:26:22,757 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-16 11:26:22,759 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-16 11:26:22,762 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-16 11:26:22,767 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-16 11:26:22,774 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-16 11:26:22,775 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-16 11:26:22,776 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-16 11:26:22,778 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-16 11:26:22,780 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-16 11:26:22,781 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-16 11:26:22,782 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-16 11:26:22,785 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-16 11:26:22,786 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-16 11:26:22,788 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-16 11:26:22,789 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-16 11:26:22,790 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-16 11:26:22,791 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-16 11:26:22,791 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-16 11:26:22,794 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-16 11:26:22,795 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-16 11:26:22,797 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c04a0f81-8b6c-4bc8-9c3a-7f4603344bba/bin/uautomizer-tPACEb0tL8/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2022-11-16 11:26:22,851 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-16 11:26:22,852 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-16 11:26:22,854 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-16 11:26:22,854 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-16 11:26:22,856 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-16 11:26:22,856 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-16 11:26:22,858 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-16 11:26:22,858 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-16 11:26:22,859 INFO L138 SettingsManager]: * Use SBE=true [2022-11-16 11:26:22,859 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-16 11:26:22,861 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-16 11:26:22,861 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-16 11:26:22,861 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-16 11:26:22,862 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-16 11:26:22,862 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-16 11:26:22,863 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-11-16 11:26:22,863 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-11-16 11:26:22,863 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-11-16 11:26:22,863 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-16 11:26:22,864 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-16 11:26:22,864 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-11-16 11:26:22,864 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-11-16 11:26:22,864 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-16 11:26:22,865 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-16 11:26:22,865 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-16 11:26:22,865 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-16 11:26:22,866 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-16 11:26:22,866 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 11:26:22,867 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-16 11:26:22,867 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-16 11:26:22,867 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-11-16 11:26:22,868 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-11-16 11:26:22,868 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-16 11:26:22,869 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_c04a0f81-8b6c-4bc8-9c3a-7f4603344bba/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c04a0f81-8b6c-4bc8-9c3a-7f4603344bba/bin/uautomizer-tPACEb0tL8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6376f52a263bde0c709cb35a0d040626ae764c5527f8161f54a95df7802768d2 [2022-11-16 11:26:23,400 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-16 11:26:23,437 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-16 11:26:23,441 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-16 11:26:23,443 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-16 11:26:23,446 INFO L275 PluginConnector]: CDTParser initialized [2022-11-16 11:26:23,449 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c04a0f81-8b6c-4bc8-9c3a-7f4603344bba/bin/uautomizer-tPACEb0tL8/../../sv-benchmarks/c/array-memsafety/array02-alloca-2.i [2022-11-16 11:26:23,540 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c04a0f81-8b6c-4bc8-9c3a-7f4603344bba/bin/uautomizer-tPACEb0tL8/data/7cd7d1a72/1290bf11c04c4b0ba6ebc0a1f5b3adce/FLAG74768e1a8 [2022-11-16 11:26:24,297 INFO L306 CDTParser]: Found 1 translation units. [2022-11-16 11:26:24,298 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c04a0f81-8b6c-4bc8-9c3a-7f4603344bba/sv-benchmarks/c/array-memsafety/array02-alloca-2.i [2022-11-16 11:26:24,312 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c04a0f81-8b6c-4bc8-9c3a-7f4603344bba/bin/uautomizer-tPACEb0tL8/data/7cd7d1a72/1290bf11c04c4b0ba6ebc0a1f5b3adce/FLAG74768e1a8 [2022-11-16 11:26:24,576 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c04a0f81-8b6c-4bc8-9c3a-7f4603344bba/bin/uautomizer-tPACEb0tL8/data/7cd7d1a72/1290bf11c04c4b0ba6ebc0a1f5b3adce [2022-11-16 11:26:24,580 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-16 11:26:24,582 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-16 11:26:24,584 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-16 11:26:24,584 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-16 11:26:24,594 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-16 11:26:24,596 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 11:26:24" (1/1) ... [2022-11-16 11:26:24,597 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6fcfb9ec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:26:24, skipping insertion in model container [2022-11-16 11:26:24,601 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 11:26:24" (1/1) ... [2022-11-16 11:26:24,611 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-16 11:26:24,680 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-16 11:26:25,172 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 11:26:25,197 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2022-11-16 11:26:25,206 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-16 11:26:25,269 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 11:26:25,275 INFO L203 MainTranslator]: Completed pre-run [2022-11-16 11:26:25,317 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 11:26:25,352 INFO L208 MainTranslator]: Completed translation [2022-11-16 11:26:25,352 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:26:25 WrapperNode [2022-11-16 11:26:25,353 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-16 11:26:25,354 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-16 11:26:25,355 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-16 11:26:25,355 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-16 11:26:25,365 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:26:25" (1/1) ... [2022-11-16 11:26:25,385 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:26:25" (1/1) ... [2022-11-16 11:26:25,419 INFO L138 Inliner]: procedures = 117, calls = 12, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 68 [2022-11-16 11:26:25,420 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-16 11:26:25,421 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-16 11:26:25,421 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-16 11:26:25,421 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-16 11:26:25,433 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:26:25" (1/1) ... [2022-11-16 11:26:25,433 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:26:25" (1/1) ... [2022-11-16 11:26:25,439 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:26:25" (1/1) ... [2022-11-16 11:26:25,439 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:26:25" (1/1) ... [2022-11-16 11:26:25,449 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:26:25" (1/1) ... [2022-11-16 11:26:25,471 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:26:25" (1/1) ... [2022-11-16 11:26:25,473 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:26:25" (1/1) ... [2022-11-16 11:26:25,475 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:26:25" (1/1) ... [2022-11-16 11:26:25,478 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-16 11:26:25,480 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-16 11:26:25,480 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-16 11:26:25,480 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-16 11:26:25,481 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:26:25" (1/1) ... [2022-11-16 11:26:25,491 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 11:26:25,507 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c04a0f81-8b6c-4bc8-9c3a-7f4603344bba/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:26:25,523 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c04a0f81-8b6c-4bc8-9c3a-7f4603344bba/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-16 11:26:25,538 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c04a0f81-8b6c-4bc8-9c3a-7f4603344bba/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-16 11:26:25,586 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2022-11-16 11:26:25,586 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-16 11:26:25,587 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-16 11:26:25,587 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2022-11-16 11:26:25,587 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-16 11:26:25,587 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-16 11:26:25,852 INFO L235 CfgBuilder]: Building ICFG [2022-11-16 11:26:25,855 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-16 11:26:26,366 INFO L276 CfgBuilder]: Performing block encoding [2022-11-16 11:26:26,375 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-16 11:26:26,376 INFO L300 CfgBuilder]: Removed 4 assume(true) statements. [2022-11-16 11:26:26,378 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 11:26:26 BoogieIcfgContainer [2022-11-16 11:26:26,379 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-16 11:26:26,382 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-16 11:26:26,382 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-16 11:26:26,386 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-16 11:26:26,387 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 11:26:24" (1/3) ... [2022-11-16 11:26:26,388 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2d60bab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 11:26:26, skipping insertion in model container [2022-11-16 11:26:26,388 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:26:25" (2/3) ... [2022-11-16 11:26:26,389 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2d60bab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 11:26:26, skipping insertion in model container [2022-11-16 11:26:26,389 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 11:26:26" (3/3) ... [2022-11-16 11:26:26,391 INFO L112 eAbstractionObserver]: Analyzing ICFG array02-alloca-2.i [2022-11-16 11:26:26,418 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-16 11:26:26,418 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 15 error locations. [2022-11-16 11:26:26,485 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-16 11:26:26,494 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;@71fac9e7, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-16 11:26:26,495 INFO L358 AbstractCegarLoop]: Starting to check reachability of 15 error locations. [2022-11-16 11:26:26,501 INFO L276 IsEmpty]: Start isEmpty. Operand has 42 states, 26 states have (on average 1.9230769230769231) internal successors, (50), 41 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:26:26,510 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-11-16 11:26:26,511 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:26:26,512 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-11-16 11:26:26,513 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2022-11-16 11:26:26,520 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:26:26,521 INFO L85 PathProgramCache]: Analyzing trace with hash 889508873, now seen corresponding path program 1 times [2022-11-16 11:26:26,539 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 11:26:26,539 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [911549713] [2022-11-16 11:26:26,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:26:26,541 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 11:26:26,541 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c04a0f81-8b6c-4bc8-9c3a-7f4603344bba/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 11:26:26,548 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c04a0f81-8b6c-4bc8-9c3a-7f4603344bba/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 11:26:26,555 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c04a0f81-8b6c-4bc8-9c3a-7f4603344bba/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-11-16 11:26:26,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:26:26,663 INFO L263 TraceCheckSpWp]: Trace formula consists of 23 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-16 11:26:26,670 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:26:26,772 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 11:26:26,818 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:26:26,818 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 11:26:26,819 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 11:26:26,820 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [911549713] [2022-11-16 11:26:26,820 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [911549713] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:26:26,821 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:26:26,821 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-16 11:26:26,823 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1812414495] [2022-11-16 11:26:26,824 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:26:26,830 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 11:26:26,830 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 11:26:26,866 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 11:26:26,867 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:26:26,870 INFO L87 Difference]: Start difference. First operand has 42 states, 26 states have (on average 1.9230769230769231) internal successors, (50), 41 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:26:27,005 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:26:27,005 INFO L93 Difference]: Finished difference Result 41 states and 45 transitions. [2022-11-16 11:26:27,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 11:26:27,009 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2022-11-16 11:26:27,009 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:26:27,019 INFO L225 Difference]: With dead ends: 41 [2022-11-16 11:26:27,020 INFO L226 Difference]: Without dead ends: 39 [2022-11-16 11:26:27,022 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:26:27,027 INFO L413 NwaCegarLoop]: 29 mSDtfsCounter, 35 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 32 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-16 11:26:27,029 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 32 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-16 11:26:27,095 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2022-11-16 11:26:27,124 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2022-11-16 11:26:27,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 25 states have (on average 1.72) internal successors, (43), 38 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:26:27,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 43 transitions. [2022-11-16 11:26:27,129 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 43 transitions. Word has length 6 [2022-11-16 11:26:27,146 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:26:27,146 INFO L495 AbstractCegarLoop]: Abstraction has 39 states and 43 transitions. [2022-11-16 11:26:27,147 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:26:27,147 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 43 transitions. [2022-11-16 11:26:27,148 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-11-16 11:26:27,148 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:26:27,148 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-11-16 11:26:27,194 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c04a0f81-8b6c-4bc8-9c3a-7f4603344bba/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)] Ended with exit code 0 [2022-11-16 11:26:27,349 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c04a0f81-8b6c-4bc8-9c3a-7f4603344bba/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 11:26:27,350 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2022-11-16 11:26:27,350 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:26:27,351 INFO L85 PathProgramCache]: Analyzing trace with hash 889508874, now seen corresponding path program 1 times [2022-11-16 11:26:27,351 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 11:26:27,352 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [980626751] [2022-11-16 11:26:27,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:26:27,352 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 11:26:27,352 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c04a0f81-8b6c-4bc8-9c3a-7f4603344bba/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 11:26:27,359 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c04a0f81-8b6c-4bc8-9c3a-7f4603344bba/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 11:26:27,418 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c04a0f81-8b6c-4bc8-9c3a-7f4603344bba/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2022-11-16 11:26:27,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:26:27,470 INFO L263 TraceCheckSpWp]: Trace formula consists of 23 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-16 11:26:27,474 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:26:27,548 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 11:26:27,623 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:26:27,624 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 11:26:27,624 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 11:26:27,626 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [980626751] [2022-11-16 11:26:27,631 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [980626751] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:26:27,634 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:26:27,634 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 11:26:27,635 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2077119687] [2022-11-16 11:26:27,635 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:26:27,637 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 11:26:27,637 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 11:26:27,640 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 11:26:27,641 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 11:26:27,641 INFO L87 Difference]: Start difference. First operand 39 states and 43 transitions. Second operand has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:26:28,102 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:26:28,103 INFO L93 Difference]: Finished difference Result 79 states and 86 transitions. [2022-11-16 11:26:28,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 11:26:28,104 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2022-11-16 11:26:28,105 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:26:28,106 INFO L225 Difference]: With dead ends: 79 [2022-11-16 11:26:28,106 INFO L226 Difference]: Without dead ends: 79 [2022-11-16 11:26:28,107 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 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 11:26:28,109 INFO L413 NwaCegarLoop]: 71 mSDtfsCounter, 45 mSDsluCounter, 79 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 150 SdHoareTripleChecker+Invalid, 50 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-16 11:26:28,109 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [45 Valid, 150 Invalid, 50 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-16 11:26:28,111 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2022-11-16 11:26:28,117 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 42. [2022-11-16 11:26:28,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42 states, 28 states have (on average 1.6428571428571428) internal successors, (46), 41 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:26:28,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 46 transitions. [2022-11-16 11:26:28,120 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 46 transitions. Word has length 6 [2022-11-16 11:26:28,120 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:26:28,121 INFO L495 AbstractCegarLoop]: Abstraction has 42 states and 46 transitions. [2022-11-16 11:26:28,121 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:26:28,121 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 46 transitions. [2022-11-16 11:26:28,122 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-11-16 11:26:28,122 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:26:28,122 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-11-16 11:26:28,145 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c04a0f81-8b6c-4bc8-9c3a-7f4603344bba/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2022-11-16 11:26:28,330 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c04a0f81-8b6c-4bc8-9c3a-7f4603344bba/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 11:26:28,331 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2022-11-16 11:26:28,332 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:26:28,332 INFO L85 PathProgramCache]: Analyzing trace with hash 889568456, now seen corresponding path program 1 times [2022-11-16 11:26:28,333 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 11:26:28,333 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1442920975] [2022-11-16 11:26:28,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:26:28,334 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 11:26:28,334 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c04a0f81-8b6c-4bc8-9c3a-7f4603344bba/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 11:26:28,336 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c04a0f81-8b6c-4bc8-9c3a-7f4603344bba/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 11:26:28,363 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c04a0f81-8b6c-4bc8-9c3a-7f4603344bba/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2022-11-16 11:26:28,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:26:28,409 INFO L263 TraceCheckSpWp]: Trace formula consists of 23 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-16 11:26:28,411 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:26:28,469 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 8 treesize of output 7 [2022-11-16 11:26:28,567 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:26:28,567 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 11:26:28,568 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 11:26:28,568 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1442920975] [2022-11-16 11:26:28,568 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1442920975] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:26:28,569 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:26:28,569 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 11:26:28,569 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [576130350] [2022-11-16 11:26:28,569 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:26:28,570 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 11:26:28,570 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 11:26:28,571 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 11:26:28,571 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 11:26:28,572 INFO L87 Difference]: Start difference. First operand 42 states and 46 transitions. Second operand has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:26:28,642 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:26:28,642 INFO L93 Difference]: Finished difference Result 44 states and 49 transitions. [2022-11-16 11:26:28,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 11:26:28,644 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2022-11-16 11:26:28,644 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:26:28,645 INFO L225 Difference]: With dead ends: 44 [2022-11-16 11:26:28,645 INFO L226 Difference]: Without dead ends: 44 [2022-11-16 11:26:28,646 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 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 11:26:28,647 INFO L413 NwaCegarLoop]: 39 mSDtfsCounter, 1 mSDsluCounter, 58 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 97 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 19 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-16 11:26:28,648 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 97 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 19 Unchecked, 0.0s Time] [2022-11-16 11:26:28,649 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2022-11-16 11:26:28,653 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 43. [2022-11-16 11:26:28,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43 states, 29 states have (on average 1.6551724137931034) internal successors, (48), 42 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:26:28,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 48 transitions. [2022-11-16 11:26:28,655 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 48 transitions. Word has length 6 [2022-11-16 11:26:28,656 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:26:28,656 INFO L495 AbstractCegarLoop]: Abstraction has 43 states and 48 transitions. [2022-11-16 11:26:28,656 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:26:28,657 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 48 transitions. [2022-11-16 11:26:28,657 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-11-16 11:26:28,658 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:26:28,658 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:26:28,680 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c04a0f81-8b6c-4bc8-9c3a-7f4603344bba/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2022-11-16 11:26:28,873 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c04a0f81-8b6c-4bc8-9c3a-7f4603344bba/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 11:26:28,873 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2022-11-16 11:26:28,874 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:26:28,874 INFO L85 PathProgramCache]: Analyzing trace with hash 176742583, now seen corresponding path program 1 times [2022-11-16 11:26:28,875 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 11:26:28,875 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [617806608] [2022-11-16 11:26:28,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:26:28,875 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 11:26:28,876 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c04a0f81-8b6c-4bc8-9c3a-7f4603344bba/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 11:26:28,886 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c04a0f81-8b6c-4bc8-9c3a-7f4603344bba/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 11:26:28,930 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c04a0f81-8b6c-4bc8-9c3a-7f4603344bba/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2022-11-16 11:26:28,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:26:28,988 INFO L263 TraceCheckSpWp]: Trace formula consists of 33 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-16 11:26:28,991 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:26:29,014 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 11:26:29,055 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:26:29,056 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 11:26:29,056 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 11:26:29,056 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [617806608] [2022-11-16 11:26:29,057 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [617806608] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:26:29,057 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:26:29,057 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 11:26:29,058 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1297143103] [2022-11-16 11:26:29,058 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:26:29,058 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 11:26:29,059 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 11:26:29,059 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 11:26:29,060 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 11:26:29,060 INFO L87 Difference]: Start difference. First operand 43 states and 48 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 11:26:29,267 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:26:29,267 INFO L93 Difference]: Finished difference Result 37 states and 42 transitions. [2022-11-16 11:26:29,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 11:26:29,268 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 11:26:29,269 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:26:29,269 INFO L225 Difference]: With dead ends: 37 [2022-11-16 11:26:29,269 INFO L226 Difference]: Without dead ends: 37 [2022-11-16 11:26:29,270 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 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 11:26:29,271 INFO L413 NwaCegarLoop]: 21 mSDtfsCounter, 51 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 29 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-16 11:26:29,272 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [51 Valid, 29 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-16 11:26:29,273 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2022-11-16 11:26:29,275 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2022-11-16 11:26:29,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 29 states have (on average 1.4482758620689655) internal successors, (42), 36 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:26:29,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 42 transitions. [2022-11-16 11:26:29,283 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 42 transitions. Word has length 8 [2022-11-16 11:26:29,284 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:26:29,284 INFO L495 AbstractCegarLoop]: Abstraction has 37 states and 42 transitions. [2022-11-16 11:26:29,285 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 11:26:29,285 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 42 transitions. [2022-11-16 11:26:29,285 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-11-16 11:26:29,286 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:26:29,286 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:26:29,307 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c04a0f81-8b6c-4bc8-9c3a-7f4603344bba/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)] Forceful destruction successful, exit code 0 [2022-11-16 11:26:29,507 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c04a0f81-8b6c-4bc8-9c3a-7f4603344bba/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 11:26:29,507 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2022-11-16 11:26:29,508 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:26:29,508 INFO L85 PathProgramCache]: Analyzing trace with hash 176742584, now seen corresponding path program 1 times [2022-11-16 11:26:29,508 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 11:26:29,509 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1229224969] [2022-11-16 11:26:29,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:26:29,509 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 11:26:29,509 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c04a0f81-8b6c-4bc8-9c3a-7f4603344bba/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 11:26:29,515 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c04a0f81-8b6c-4bc8-9c3a-7f4603344bba/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 11:26:29,559 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c04a0f81-8b6c-4bc8-9c3a-7f4603344bba/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2022-11-16 11:26:29,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:26:29,595 INFO L263 TraceCheckSpWp]: Trace formula consists of 33 conjuncts, 13 conjunts are in the unsatisfiable core [2022-11-16 11:26:29,598 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:26:29,663 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 8 treesize of output 7 [2022-11-16 11:26:29,912 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:26:29,912 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 11:26:29,913 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 11:26:29,913 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1229224969] [2022-11-16 11:26:29,913 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1229224969] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:26:29,913 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:26:29,914 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-16 11:26:29,914 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [75059733] [2022-11-16 11:26:29,916 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:26:29,918 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-16 11:26:29,918 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 11:26:29,919 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-16 11:26:29,920 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-16 11:26:29,920 INFO L87 Difference]: Start difference. First operand 37 states and 42 transitions. Second operand has 5 states, 4 states have (on average 2.0) internal successors, (8), 5 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 11:26:29,976 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:26:29,980 INFO L93 Difference]: Finished difference Result 40 states and 46 transitions. [2022-11-16 11:26:29,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-16 11:26:29,981 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.0) internal successors, (8), 5 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 11:26:29,981 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:26:29,982 INFO L225 Difference]: With dead ends: 40 [2022-11-16 11:26:29,984 INFO L226 Difference]: Without dead ends: 40 [2022-11-16 11:26:29,985 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-11-16 11:26:29,988 INFO L413 NwaCegarLoop]: 30 mSDtfsCounter, 1 mSDsluCounter, 59 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 89 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 35 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-16 11:26:29,990 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 89 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 2 Invalid, 0 Unknown, 35 Unchecked, 0.0s Time] [2022-11-16 11:26:29,991 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2022-11-16 11:26:29,995 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 40. [2022-11-16 11:26:29,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40 states, 32 states have (on average 1.4375) internal successors, (46), 39 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:26:29,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 46 transitions. [2022-11-16 11:26:30,001 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 46 transitions. Word has length 8 [2022-11-16 11:26:30,002 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:26:30,002 INFO L495 AbstractCegarLoop]: Abstraction has 40 states and 46 transitions. [2022-11-16 11:26:30,002 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.0) internal successors, (8), 5 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 11:26:30,003 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 46 transitions. [2022-11-16 11:26:30,003 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-11-16 11:26:30,003 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:26:30,004 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:26:30,023 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c04a0f81-8b6c-4bc8-9c3a-7f4603344bba/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2022-11-16 11:26:30,218 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c04a0f81-8b6c-4bc8-9c3a-7f4603344bba/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 11:26:30,219 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2022-11-16 11:26:30,219 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:26:30,219 INFO L85 PathProgramCache]: Analyzing trace with hash 1184052306, now seen corresponding path program 1 times [2022-11-16 11:26:30,220 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 11:26:30,220 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [446411158] [2022-11-16 11:26:30,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:26:30,220 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 11:26:30,220 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c04a0f81-8b6c-4bc8-9c3a-7f4603344bba/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 11:26:30,222 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c04a0f81-8b6c-4bc8-9c3a-7f4603344bba/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 11:26:30,238 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c04a0f81-8b6c-4bc8-9c3a-7f4603344bba/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2022-11-16 11:26:30,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:26:30,302 INFO L263 TraceCheckSpWp]: Trace formula consists of 35 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-16 11:26:30,305 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:26:30,388 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:26:30,388 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 11:26:30,389 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 11:26:30,389 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [446411158] [2022-11-16 11:26:30,389 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [446411158] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:26:30,390 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:26:30,390 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-16 11:26:30,390 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1476142920] [2022-11-16 11:26:30,391 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:26:30,392 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 11:26:30,392 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 11:26:30,393 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 11:26:30,393 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-16 11:26:30,394 INFO L87 Difference]: Start difference. First operand 40 states and 46 transitions. Second operand has 4 states, 4 states have (on average 2.25) 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 11:26:30,460 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:26:30,461 INFO L93 Difference]: Finished difference Result 39 states and 43 transitions. [2022-11-16 11:26:30,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 11:26:30,466 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.25) 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 11:26:30,466 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:26:30,466 INFO L225 Difference]: With dead ends: 39 [2022-11-16 11:26:30,466 INFO L226 Difference]: Without dead ends: 39 [2022-11-16 11:26:30,467 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 6 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 11:26:30,468 INFO L413 NwaCegarLoop]: 31 mSDtfsCounter, 37 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 59 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-16 11:26:30,468 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [37 Valid, 59 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-16 11:26:30,469 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2022-11-16 11:26:30,475 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 35. [2022-11-16 11:26:30,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 27 states have (on average 1.4444444444444444) internal successors, (39), 34 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:26:30,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 39 transitions. [2022-11-16 11:26:30,481 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 39 transitions. Word has length 9 [2022-11-16 11:26:30,482 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:26:30,482 INFO L495 AbstractCegarLoop]: Abstraction has 35 states and 39 transitions. [2022-11-16 11:26:30,482 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.25) 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 11:26:30,482 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 39 transitions. [2022-11-16 11:26:30,483 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-11-16 11:26:30,483 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:26:30,483 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:26:30,506 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c04a0f81-8b6c-4bc8-9c3a-7f4603344bba/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 11:26:30,699 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c04a0f81-8b6c-4bc8-9c3a-7f4603344bba/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 11:26:30,699 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2022-11-16 11:26:30,700 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:26:30,700 INFO L85 PathProgramCache]: Analyzing trace with hash -1091210163, now seen corresponding path program 1 times [2022-11-16 11:26:30,700 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 11:26:30,700 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1135327421] [2022-11-16 11:26:30,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:26:30,701 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 11:26:30,701 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c04a0f81-8b6c-4bc8-9c3a-7f4603344bba/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 11:26:30,702 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c04a0f81-8b6c-4bc8-9c3a-7f4603344bba/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 11:26:30,704 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c04a0f81-8b6c-4bc8-9c3a-7f4603344bba/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2022-11-16 11:26:30,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:26:30,769 INFO L263 TraceCheckSpWp]: Trace formula consists of 36 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-16 11:26:30,771 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:26:30,864 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:26:30,864 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:26:30,957 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:26:30,957 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 11:26:30,957 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1135327421] [2022-11-16 11:26:30,958 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1135327421] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 11:26:30,958 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-16 11:26:30,958 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2022-11-16 11:26:30,958 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [117219612] [2022-11-16 11:26:30,958 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-16 11:26:30,959 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-16 11:26:30,959 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 11:26:30,959 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-16 11:26:30,960 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2022-11-16 11:26:30,960 INFO L87 Difference]: Start difference. First operand 35 states and 39 transitions. Second operand has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:26:31,088 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:26:31,088 INFO L93 Difference]: Finished difference Result 65 states and 71 transitions. [2022-11-16 11:26:31,089 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-16 11:26:31,090 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 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 10 [2022-11-16 11:26:31,090 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:26:31,091 INFO L225 Difference]: With dead ends: 65 [2022-11-16 11:26:31,091 INFO L226 Difference]: Without dead ends: 65 [2022-11-16 11:26:31,092 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2022-11-16 11:26:31,092 INFO L413 NwaCegarLoop]: 31 mSDtfsCounter, 85 mSDsluCounter, 117 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 85 SdHoareTripleChecker+Valid, 148 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-16 11:26:31,093 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [85 Valid, 148 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-16 11:26:31,094 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2022-11-16 11:26:31,097 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 41. [2022-11-16 11:26:31,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 33 states have (on average 1.3636363636363635) internal successors, (45), 40 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:26:31,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 45 transitions. [2022-11-16 11:26:31,099 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 45 transitions. Word has length 10 [2022-11-16 11:26:31,099 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:26:31,099 INFO L495 AbstractCegarLoop]: Abstraction has 41 states and 45 transitions. [2022-11-16 11:26:31,100 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:26:31,100 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 45 transitions. [2022-11-16 11:26:31,100 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-11-16 11:26:31,101 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:26:31,101 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:26:31,122 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c04a0f81-8b6c-4bc8-9c3a-7f4603344bba/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2022-11-16 11:26:31,317 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c04a0f81-8b6c-4bc8-9c3a-7f4603344bba/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 11:26:31,317 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2022-11-16 11:26:31,318 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:26:31,318 INFO L85 PathProgramCache]: Analyzing trace with hash -1900556789, now seen corresponding path program 1 times [2022-11-16 11:26:31,318 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 11:26:31,318 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [853648840] [2022-11-16 11:26:31,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:26:31,319 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 11:26:31,319 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c04a0f81-8b6c-4bc8-9c3a-7f4603344bba/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 11:26:31,320 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c04a0f81-8b6c-4bc8-9c3a-7f4603344bba/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 11:26:31,322 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c04a0f81-8b6c-4bc8-9c3a-7f4603344bba/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2022-11-16 11:26:31,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:26:31,385 INFO L263 TraceCheckSpWp]: Trace formula consists of 36 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-16 11:26:31,387 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:26:31,424 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 8 treesize of output 7 [2022-11-16 11:26:31,702 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:26:31,702 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:26:32,359 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:26:32,364 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 11:26:32,364 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [853648840] [2022-11-16 11:26:32,365 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [853648840] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 11:26:32,365 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-16 11:26:32,365 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2022-11-16 11:26:32,365 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1082136445] [2022-11-16 11:26:32,366 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-16 11:26:32,366 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-16 11:26:32,368 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 11:26:32,369 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-16 11:26:32,369 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2022-11-16 11:26:32,369 INFO L87 Difference]: Start difference. First operand 41 states and 45 transitions. Second operand has 10 states, 9 states have (on average 2.0) internal successors, (18), 10 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:26:33,274 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:26:33,275 INFO L93 Difference]: Finished difference Result 73 states and 81 transitions. [2022-11-16 11:26:33,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-16 11:26:33,277 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.0) internal successors, (18), 10 states have internal predecessors, (18), 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 10 [2022-11-16 11:26:33,278 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:26:33,281 INFO L225 Difference]: With dead ends: 73 [2022-11-16 11:26:33,281 INFO L226 Difference]: Without dead ends: 73 [2022-11-16 11:26:33,281 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2022-11-16 11:26:33,282 INFO L413 NwaCegarLoop]: 19 mSDtfsCounter, 154 mSDsluCounter, 69 mSDsCounter, 0 mSdLazyCounter, 88 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 154 SdHoareTripleChecker+Valid, 88 SdHoareTripleChecker+Invalid, 119 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 88 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 25 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-11-16 11:26:33,283 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [154 Valid, 88 Invalid, 119 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 88 Invalid, 0 Unknown, 25 Unchecked, 0.8s Time] [2022-11-16 11:26:33,286 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2022-11-16 11:26:33,290 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 49. [2022-11-16 11:26:33,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49 states, 41 states have (on average 1.3414634146341464) internal successors, (55), 48 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:26:33,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 55 transitions. [2022-11-16 11:26:33,292 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 55 transitions. Word has length 10 [2022-11-16 11:26:33,292 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:26:33,293 INFO L495 AbstractCegarLoop]: Abstraction has 49 states and 55 transitions. [2022-11-16 11:26:33,293 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 2.0) internal successors, (18), 10 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:26:33,293 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 55 transitions. [2022-11-16 11:26:33,294 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-11-16 11:26:33,294 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:26:33,294 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:26:33,309 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c04a0f81-8b6c-4bc8-9c3a-7f4603344bba/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 11:26:33,506 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c04a0f81-8b6c-4bc8-9c3a-7f4603344bba/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 11:26:33,507 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2022-11-16 11:26:33,507 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:26:33,508 INFO L85 PathProgramCache]: Analyzing trace with hash -680998147, now seen corresponding path program 1 times [2022-11-16 11:26:33,508 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 11:26:33,508 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1064344516] [2022-11-16 11:26:33,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:26:33,509 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 11:26:33,509 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c04a0f81-8b6c-4bc8-9c3a-7f4603344bba/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 11:26:33,511 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c04a0f81-8b6c-4bc8-9c3a-7f4603344bba/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 11:26:33,513 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c04a0f81-8b6c-4bc8-9c3a-7f4603344bba/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2022-11-16 11:26:33,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:26:33,608 INFO L263 TraceCheckSpWp]: Trace formula consists of 46 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-16 11:26:33,610 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:26:33,639 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 11:26:33,759 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-16 11:26:33,760 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 11:26:33,760 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 11:26:33,761 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1064344516] [2022-11-16 11:26:33,761 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1064344516] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:26:33,761 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:26:33,762 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-16 11:26:33,762 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [86025129] [2022-11-16 11:26:33,762 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:26:33,763 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-16 11:26:33,763 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 11:26:33,764 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-16 11:26:33,764 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-16 11:26:33,766 INFO L87 Difference]: Start difference. First operand 49 states and 55 transitions. Second operand has 5 states, 4 states have (on average 3.0) internal successors, (12), 5 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:26:34,251 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:26:34,251 INFO L93 Difference]: Finished difference Result 90 states and 100 transitions. [2022-11-16 11:26:34,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 11:26:34,255 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.0) internal successors, (12), 5 states have internal predecessors, (12), 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 12 [2022-11-16 11:26:34,255 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:26:34,256 INFO L225 Difference]: With dead ends: 90 [2022-11-16 11:26:34,256 INFO L226 Difference]: Without dead ends: 90 [2022-11-16 11:26:34,257 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-11-16 11:26:34,257 INFO L413 NwaCegarLoop]: 23 mSDtfsCounter, 113 mSDsluCounter, 76 mSDsCounter, 0 mSdLazyCounter, 78 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 113 SdHoareTripleChecker+Valid, 99 SdHoareTripleChecker+Invalid, 83 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 78 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-16 11:26:34,258 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [113 Valid, 99 Invalid, 83 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 78 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-16 11:26:34,259 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2022-11-16 11:26:34,263 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 63. [2022-11-16 11:26:34,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63 states, 55 states have (on average 1.309090909090909) internal successors, (72), 62 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:26:34,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 72 transitions. [2022-11-16 11:26:34,265 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 72 transitions. Word has length 12 [2022-11-16 11:26:34,265 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:26:34,265 INFO L495 AbstractCegarLoop]: Abstraction has 63 states and 72 transitions. [2022-11-16 11:26:34,266 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.0) internal successors, (12), 5 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:26:34,266 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 72 transitions. [2022-11-16 11:26:34,267 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-11-16 11:26:34,267 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:26:34,267 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:26:34,281 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c04a0f81-8b6c-4bc8-9c3a-7f4603344bba/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 11:26:34,477 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c04a0f81-8b6c-4bc8-9c3a-7f4603344bba/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 11:26:34,478 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2022-11-16 11:26:34,479 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:26:34,479 INFO L85 PathProgramCache]: Analyzing trace with hash -1074025157, now seen corresponding path program 1 times [2022-11-16 11:26:34,480 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 11:26:34,480 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1662760714] [2022-11-16 11:26:34,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:26:34,480 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 11:26:34,481 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c04a0f81-8b6c-4bc8-9c3a-7f4603344bba/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 11:26:34,482 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c04a0f81-8b6c-4bc8-9c3a-7f4603344bba/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 11:26:34,484 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c04a0f81-8b6c-4bc8-9c3a-7f4603344bba/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 11:26:34,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:26:34,573 INFO L263 TraceCheckSpWp]: Trace formula consists of 46 conjuncts, 14 conjunts are in the unsatisfiable core [2022-11-16 11:26:34,575 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:26:34,608 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 8 treesize of output 7 [2022-11-16 11:26:34,957 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:26:34,957 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:26:35,439 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:26:35,440 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 11:26:35,440 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1662760714] [2022-11-16 11:26:35,440 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1662760714] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-16 11:26:35,441 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-16 11:26:35,441 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 8 [2022-11-16 11:26:35,441 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [174604124] [2022-11-16 11:26:35,442 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:26:35,442 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-16 11:26:35,442 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 11:26:35,443 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-16 11:26:35,443 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2022-11-16 11:26:35,444 INFO L87 Difference]: Start difference. First operand 63 states and 72 transitions. Second operand has 5 states, 4 states have (on average 3.0) internal successors, (12), 5 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:26:35,838 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:26:35,838 INFO L93 Difference]: Finished difference Result 63 states and 72 transitions. [2022-11-16 11:26:35,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 11:26:35,840 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.0) internal successors, (12), 5 states have internal predecessors, (12), 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 12 [2022-11-16 11:26:35,840 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:26:35,841 INFO L225 Difference]: With dead ends: 63 [2022-11-16 11:26:35,841 INFO L226 Difference]: Without dead ends: 63 [2022-11-16 11:26:35,842 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2022-11-16 11:26:35,842 INFO L413 NwaCegarLoop]: 19 mSDtfsCounter, 49 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 35 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-16 11:26:35,843 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [49 Valid, 35 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-16 11:26:35,844 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2022-11-16 11:26:35,846 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 46. [2022-11-16 11:26:35,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46 states, 43 states have (on average 1.2325581395348837) internal successors, (53), 45 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:26:35,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 53 transitions. [2022-11-16 11:26:35,848 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 53 transitions. Word has length 12 [2022-11-16 11:26:35,848 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:26:35,848 INFO L495 AbstractCegarLoop]: Abstraction has 46 states and 53 transitions. [2022-11-16 11:26:35,849 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.0) internal successors, (12), 5 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:26:35,849 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 53 transitions. [2022-11-16 11:26:35,850 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-11-16 11:26:35,850 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:26:35,850 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:26:35,864 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c04a0f81-8b6c-4bc8-9c3a-7f4603344bba/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 11:26:36,058 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c04a0f81-8b6c-4bc8-9c3a-7f4603344bba/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 11:26:36,059 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2022-11-16 11:26:36,059 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:26:36,059 INFO L85 PathProgramCache]: Analyzing trace with hash 363893421, now seen corresponding path program 1 times [2022-11-16 11:26:36,059 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 11:26:36,060 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1370709929] [2022-11-16 11:26:36,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:26:36,060 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 11:26:36,060 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c04a0f81-8b6c-4bc8-9c3a-7f4603344bba/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 11:26:36,070 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c04a0f81-8b6c-4bc8-9c3a-7f4603344bba/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 11:26:36,077 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c04a0f81-8b6c-4bc8-9c3a-7f4603344bba/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 11:26:36,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:26:36,135 INFO L263 TraceCheckSpWp]: Trace formula consists of 48 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-16 11:26:36,136 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:26:36,192 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-16 11:26:36,193 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 11:26:36,193 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 11:26:36,193 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1370709929] [2022-11-16 11:26:36,194 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1370709929] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:26:36,194 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:26:36,194 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-16 11:26:36,194 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [546228278] [2022-11-16 11:26:36,195 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:26:36,195 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 11:26:36,195 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 11:26:36,197 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 11:26:36,197 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 11:26:36,198 INFO L87 Difference]: Start difference. First operand 46 states and 53 transitions. Second operand has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:26:36,420 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:26:36,420 INFO L93 Difference]: Finished difference Result 80 states and 91 transitions. [2022-11-16 11:26:36,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 11:26:36,422 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), 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 13 [2022-11-16 11:26:36,423 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:26:36,423 INFO L225 Difference]: With dead ends: 80 [2022-11-16 11:26:36,424 INFO L226 Difference]: Without dead ends: 80 [2022-11-16 11:26:36,424 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 10 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 11:26:36,425 INFO L413 NwaCegarLoop]: 23 mSDtfsCounter, 52 mSDsluCounter, 53 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 76 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-16 11:26:36,426 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [52 Valid, 76 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-16 11:26:36,427 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2022-11-16 11:26:36,429 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 48. [2022-11-16 11:26:36,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48 states, 45 states have (on average 1.2222222222222223) internal successors, (55), 47 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:26:36,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 55 transitions. [2022-11-16 11:26:36,431 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 55 transitions. Word has length 13 [2022-11-16 11:26:36,431 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:26:36,432 INFO L495 AbstractCegarLoop]: Abstraction has 48 states and 55 transitions. [2022-11-16 11:26:36,432 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), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:26:36,432 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 55 transitions. [2022-11-16 11:26:36,433 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-11-16 11:26:36,433 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:26:36,434 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:26:36,449 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c04a0f81-8b6c-4bc8-9c3a-7f4603344bba/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 11:26:36,649 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c04a0f81-8b6c-4bc8-9c3a-7f4603344bba/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 11:26:36,649 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2022-11-16 11:26:36,650 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:26:36,650 INFO L85 PathProgramCache]: Analyzing trace with hash 1064957999, now seen corresponding path program 1 times [2022-11-16 11:26:36,650 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 11:26:36,651 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1273933652] [2022-11-16 11:26:36,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:26:36,651 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 11:26:36,651 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c04a0f81-8b6c-4bc8-9c3a-7f4603344bba/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 11:26:36,653 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c04a0f81-8b6c-4bc8-9c3a-7f4603344bba/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 11:26:36,669 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c04a0f81-8b6c-4bc8-9c3a-7f4603344bba/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 11:26:36,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:26:36,734 INFO L263 TraceCheckSpWp]: Trace formula consists of 48 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-16 11:26:36,735 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:26:36,907 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:26:36,907 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:26:37,089 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:26:37,089 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 11:26:37,089 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1273933652] [2022-11-16 11:26:37,090 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1273933652] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 11:26:37,090 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-16 11:26:37,090 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6] total 11 [2022-11-16 11:26:37,090 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1897767998] [2022-11-16 11:26:37,090 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-16 11:26:37,091 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-16 11:26:37,091 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 11:26:37,092 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-16 11:26:37,092 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2022-11-16 11:26:37,092 INFO L87 Difference]: Start difference. First operand 48 states and 55 transitions. Second operand has 11 states, 11 states have (on average 2.0) internal successors, (22), 11 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:26:37,679 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:26:37,679 INFO L93 Difference]: Finished difference Result 82 states and 92 transitions. [2022-11-16 11:26:37,681 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-16 11:26:37,681 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.0) internal successors, (22), 11 states have internal predecessors, (22), 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 13 [2022-11-16 11:26:37,681 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:26:37,682 INFO L225 Difference]: With dead ends: 82 [2022-11-16 11:26:37,682 INFO L226 Difference]: Without dead ends: 82 [2022-11-16 11:26:37,683 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=84, Invalid=156, Unknown=0, NotChecked=0, Total=240 [2022-11-16 11:26:37,684 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 155 mSDsluCounter, 77 mSDsCounter, 0 mSdLazyCounter, 114 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 155 SdHoareTripleChecker+Valid, 95 SdHoareTripleChecker+Invalid, 119 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 114 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-16 11:26:37,684 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [155 Valid, 95 Invalid, 119 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 114 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-16 11:26:37,685 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2022-11-16 11:26:37,690 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 46. [2022-11-16 11:26:37,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46 states, 43 states have (on average 1.2093023255813953) internal successors, (52), 45 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:26:37,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 52 transitions. [2022-11-16 11:26:37,692 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 52 transitions. Word has length 13 [2022-11-16 11:26:37,692 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:26:37,692 INFO L495 AbstractCegarLoop]: Abstraction has 46 states and 52 transitions. [2022-11-16 11:26:37,693 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.0) internal successors, (22), 11 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:26:37,693 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 52 transitions. [2022-11-16 11:26:37,694 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-11-16 11:26:37,694 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:26:37,694 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:26:37,706 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c04a0f81-8b6c-4bc8-9c3a-7f4603344bba/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)] Forceful destruction successful, exit code 0 [2022-11-16 11:26:37,898 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c04a0f81-8b6c-4bc8-9c3a-7f4603344bba/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 11:26:37,898 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2022-11-16 11:26:37,899 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:26:37,899 INFO L85 PathProgramCache]: Analyzing trace with hash -2110205631, now seen corresponding path program 1 times [2022-11-16 11:26:37,899 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 11:26:37,900 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [958494269] [2022-11-16 11:26:37,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:26:37,900 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 11:26:37,900 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c04a0f81-8b6c-4bc8-9c3a-7f4603344bba/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 11:26:37,902 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c04a0f81-8b6c-4bc8-9c3a-7f4603344bba/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 11:26:37,923 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c04a0f81-8b6c-4bc8-9c3a-7f4603344bba/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 11:26:38,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:26:38,017 INFO L263 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-16 11:26:38,018 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:26:38,120 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-16 11:26:38,120 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:26:38,247 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-16 11:26:38,247 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 11:26:38,247 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [958494269] [2022-11-16 11:26:38,248 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [958494269] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 11:26:38,248 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-16 11:26:38,248 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2022-11-16 11:26:38,248 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [130253803] [2022-11-16 11:26:38,248 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-16 11:26:38,249 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-16 11:26:38,249 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 11:26:38,249 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-16 11:26:38,249 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-16 11:26:38,250 INFO L87 Difference]: Start difference. First operand 46 states and 52 transitions. Second operand has 8 states, 8 states have (on average 4.125) internal successors, (33), 8 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:26:38,456 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:26:38,456 INFO L93 Difference]: Finished difference Result 65 states and 72 transitions. [2022-11-16 11:26:38,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-16 11:26:38,458 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.125) internal successors, (33), 8 states have internal predecessors, (33), 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 18 [2022-11-16 11:26:38,459 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:26:38,459 INFO L225 Difference]: With dead ends: 65 [2022-11-16 11:26:38,459 INFO L226 Difference]: Without dead ends: 65 [2022-11-16 11:26:38,460 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2022-11-16 11:26:38,461 INFO L413 NwaCegarLoop]: 19 mSDtfsCounter, 71 mSDsluCounter, 61 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 71 SdHoareTripleChecker+Valid, 80 SdHoareTripleChecker+Invalid, 50 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-16 11:26:38,461 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [71 Valid, 80 Invalid, 50 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-16 11:26:38,462 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2022-11-16 11:26:38,470 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 62. [2022-11-16 11:26:38,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62 states, 59 states have (on average 1.1864406779661016) internal successors, (70), 61 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:26:38,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 70 transitions. [2022-11-16 11:26:38,475 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 70 transitions. Word has length 18 [2022-11-16 11:26:38,476 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:26:38,476 INFO L495 AbstractCegarLoop]: Abstraction has 62 states and 70 transitions. [2022-11-16 11:26:38,476 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 4.125) internal successors, (33), 8 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:26:38,476 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 70 transitions. [2022-11-16 11:26:38,477 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-11-16 11:26:38,483 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:26:38,484 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 1, 1, 1, 1, 1] [2022-11-16 11:26:38,506 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c04a0f81-8b6c-4bc8-9c3a-7f4603344bba/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 11:26:38,696 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c04a0f81-8b6c-4bc8-9c3a-7f4603344bba/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 11:26:38,696 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2022-11-16 11:26:38,697 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:26:38,697 INFO L85 PathProgramCache]: Analyzing trace with hash -1817992175, now seen corresponding path program 2 times [2022-11-16 11:26:38,697 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 11:26:38,697 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [313523924] [2022-11-16 11:26:38,697 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-16 11:26:38,698 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 11:26:38,698 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c04a0f81-8b6c-4bc8-9c3a-7f4603344bba/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 11:26:38,699 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c04a0f81-8b6c-4bc8-9c3a-7f4603344bba/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 11:26:38,701 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c04a0f81-8b6c-4bc8-9c3a-7f4603344bba/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 11:26:38,797 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-16 11:26:38,797 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 11:26:38,799 INFO L263 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 13 conjunts are in the unsatisfiable core [2022-11-16 11:26:38,802 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:26:38,831 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 8 treesize of output 7 [2022-11-16 11:26:39,392 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:26:39,392 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:26:40,657 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:26:40,659 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 11:26:40,659 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [313523924] [2022-11-16 11:26:40,659 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [313523924] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 11:26:40,660 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-16 11:26:40,660 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2022-11-16 11:26:40,661 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [606443267] [2022-11-16 11:26:40,661 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-16 11:26:40,662 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-16 11:26:40,662 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 11:26:40,663 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-16 11:26:40,664 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=128, Unknown=0, NotChecked=0, Total=182 [2022-11-16 11:26:40,665 INFO L87 Difference]: Start difference. First operand 62 states and 70 transitions. Second operand has 14 states, 13 states have (on average 2.6153846153846154) internal successors, (34), 14 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:26:44,041 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:26:44,041 INFO L93 Difference]: Finished difference Result 183 states and 205 transitions. [2022-11-16 11:26:44,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-11-16 11:26:44,044 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 2.6153846153846154) internal successors, (34), 14 states have internal predecessors, (34), 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 18 [2022-11-16 11:26:44,046 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:26:44,046 INFO L225 Difference]: With dead ends: 183 [2022-11-16 11:26:44,047 INFO L226 Difference]: Without dead ends: 183 [2022-11-16 11:26:44,047 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 96 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=144, Invalid=318, Unknown=0, NotChecked=0, Total=462 [2022-11-16 11:26:44,048 INFO L413 NwaCegarLoop]: 47 mSDtfsCounter, 398 mSDsluCounter, 291 mSDsCounter, 0 mSdLazyCounter, 271 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 398 SdHoareTripleChecker+Valid, 338 SdHoareTripleChecker+Invalid, 330 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 271 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 48 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-11-16 11:26:44,048 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [398 Valid, 338 Invalid, 330 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 271 Invalid, 0 Unknown, 48 Unchecked, 1.8s Time] [2022-11-16 11:26:44,049 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183 states. [2022-11-16 11:26:44,052 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183 to 78. [2022-11-16 11:26:44,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78 states, 75 states have (on average 1.2) internal successors, (90), 77 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:26:44,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 90 transitions. [2022-11-16 11:26:44,054 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 90 transitions. Word has length 18 [2022-11-16 11:26:44,055 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:26:44,055 INFO L495 AbstractCegarLoop]: Abstraction has 78 states and 90 transitions. [2022-11-16 11:26:44,055 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 2.6153846153846154) internal successors, (34), 14 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:26:44,055 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 90 transitions. [2022-11-16 11:26:44,056 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-11-16 11:26:44,057 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:26:44,057 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:26:44,079 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c04a0f81-8b6c-4bc8-9c3a-7f4603344bba/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 11:26:44,272 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c04a0f81-8b6c-4bc8-9c3a-7f4603344bba/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 11:26:44,273 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2022-11-16 11:26:44,273 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:26:44,273 INFO L85 PathProgramCache]: Analyzing trace with hash 1163693311, now seen corresponding path program 1 times [2022-11-16 11:26:44,273 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 11:26:44,273 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [989854663] [2022-11-16 11:26:44,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:26:44,274 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 11:26:44,274 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c04a0f81-8b6c-4bc8-9c3a-7f4603344bba/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 11:26:44,275 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c04a0f81-8b6c-4bc8-9c3a-7f4603344bba/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 11:26:44,286 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c04a0f81-8b6c-4bc8-9c3a-7f4603344bba/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 11:26:44,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:26:44,360 INFO L263 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-16 11:26:44,362 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:26:44,398 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 8 treesize of output 7 [2022-11-16 11:26:44,854 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-16 11:26:44,854 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:26:45,827 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-16 11:26:45,827 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 11:26:45,828 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [989854663] [2022-11-16 11:26:45,828 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [989854663] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 11:26:45,828 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-16 11:26:45,828 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2022-11-16 11:26:45,829 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [233340921] [2022-11-16 11:26:45,829 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-16 11:26:45,829 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-16 11:26:45,830 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 11:26:45,830 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-16 11:26:45,830 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2022-11-16 11:26:45,831 INFO L87 Difference]: Start difference. First operand 78 states and 90 transitions. Second operand has 12 states, 11 states have (on average 3.090909090909091) internal successors, (34), 12 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:26:47,059 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:26:47,059 INFO L93 Difference]: Finished difference Result 114 states and 132 transitions. [2022-11-16 11:26:47,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-16 11:26:47,061 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 3.090909090909091) internal successors, (34), 12 states have internal predecessors, (34), 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 18 [2022-11-16 11:26:47,061 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:26:47,063 INFO L225 Difference]: With dead ends: 114 [2022-11-16 11:26:47,063 INFO L226 Difference]: Without dead ends: 114 [2022-11-16 11:26:47,064 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=82, Invalid=190, Unknown=0, NotChecked=0, Total=272 [2022-11-16 11:26:47,065 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 134 mSDsluCounter, 97 mSDsCounter, 0 mSdLazyCounter, 90 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 134 SdHoareTripleChecker+Valid, 114 SdHoareTripleChecker+Invalid, 122 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 90 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 23 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-16 11:26:47,065 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [134 Valid, 114 Invalid, 122 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 90 Invalid, 0 Unknown, 23 Unchecked, 0.7s Time] [2022-11-16 11:26:47,066 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2022-11-16 11:26:47,071 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 106. [2022-11-16 11:26:47,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 106 states, 103 states have (on average 1.203883495145631) internal successors, (124), 105 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:26:47,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 124 transitions. [2022-11-16 11:26:47,073 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 124 transitions. Word has length 18 [2022-11-16 11:26:47,073 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:26:47,074 INFO L495 AbstractCegarLoop]: Abstraction has 106 states and 124 transitions. [2022-11-16 11:26:47,074 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 3.090909090909091) internal successors, (34), 12 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:26:47,074 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 124 transitions. [2022-11-16 11:26:47,075 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-11-16 11:26:47,075 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:26:47,076 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 11:26:47,100 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c04a0f81-8b6c-4bc8-9c3a-7f4603344bba/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 11:26:47,300 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c04a0f81-8b6c-4bc8-9c3a-7f4603344bba/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 11:26:47,300 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2022-11-16 11:26:47,301 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:26:47,301 INFO L85 PathProgramCache]: Analyzing trace with hash -991865623, now seen corresponding path program 1 times [2022-11-16 11:26:47,302 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 11:26:47,302 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [261238956] [2022-11-16 11:26:47,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:26:47,302 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 11:26:47,302 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c04a0f81-8b6c-4bc8-9c3a-7f4603344bba/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 11:26:47,305 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c04a0f81-8b6c-4bc8-9c3a-7f4603344bba/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 11:26:47,307 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c04a0f81-8b6c-4bc8-9c3a-7f4603344bba/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 11:26:47,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:26:47,416 INFO L263 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-16 11:26:47,417 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:26:47,578 WARN L855 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_main_#t~malloc12#1.base_12| (_ BitVec 32))) (and (= (_ bv0 1) (select |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_#t~malloc12#1.base_12|)) (= (store |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_#t~malloc12#1.base_12| (_ bv0 1)) |c_#valid|))) is different from true [2022-11-16 11:26:47,579 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-16 11:26:47,580 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 11:26:47,580 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 11:26:47,580 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [261238956] [2022-11-16 11:26:47,580 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [261238956] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:26:47,581 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:26:47,581 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-16 11:26:47,581 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1117077320] [2022-11-16 11:26:47,581 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:26:47,582 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-16 11:26:47,582 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 11:26:47,583 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-16 11:26:47,583 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=8, Unknown=1, NotChecked=4, Total=20 [2022-11-16 11:26:47,583 INFO L87 Difference]: Start difference. First operand 106 states and 124 transitions. Second operand has 5 states, 4 states have (on average 4.75) internal successors, (19), 5 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 11:26:47,616 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:26:47,616 INFO L93 Difference]: Finished difference Result 142 states and 170 transitions. [2022-11-16 11:26:47,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 11:26:47,617 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 4.75) internal successors, (19), 5 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 11:26:47,617 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:26:47,618 INFO L225 Difference]: With dead ends: 142 [2022-11-16 11:26:47,618 INFO L226 Difference]: Without dead ends: 138 [2022-11-16 11:26:47,619 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=8, Unknown=1, NotChecked=4, Total=20 [2022-11-16 11:26:47,620 INFO L413 NwaCegarLoop]: 25 mSDtfsCounter, 5 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 57 SdHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 45 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-16 11:26:47,620 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 57 Invalid, 51 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 45 Unchecked, 0.0s Time] [2022-11-16 11:26:47,621 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138 states. [2022-11-16 11:26:47,625 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138 to 129. [2022-11-16 11:26:47,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 129 states, 126 states have (on average 1.2301587301587302) internal successors, (155), 128 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:26:47,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 155 transitions. [2022-11-16 11:26:47,627 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 155 transitions. Word has length 19 [2022-11-16 11:26:47,627 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:26:47,628 INFO L495 AbstractCegarLoop]: Abstraction has 129 states and 155 transitions. [2022-11-16 11:26:47,628 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 4.75) internal successors, (19), 5 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 11:26:47,628 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 155 transitions. [2022-11-16 11:26:47,629 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-11-16 11:26:47,629 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:26:47,630 INFO L195 NwaCegarLoop]: trace histogram [2, 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 11:26:47,649 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c04a0f81-8b6c-4bc8-9c3a-7f4603344bba/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 11:26:47,849 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c04a0f81-8b6c-4bc8-9c3a-7f4603344bba/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 11:26:47,850 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2022-11-16 11:26:47,850 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:26:47,851 INFO L85 PathProgramCache]: Analyzing trace with hash 1147657014, now seen corresponding path program 1 times [2022-11-16 11:26:47,851 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 11:26:47,851 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [444201064] [2022-11-16 11:26:47,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:26:47,852 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 11:26:47,852 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c04a0f81-8b6c-4bc8-9c3a-7f4603344bba/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 11:26:47,853 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c04a0f81-8b6c-4bc8-9c3a-7f4603344bba/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 11:26:47,866 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c04a0f81-8b6c-4bc8-9c3a-7f4603344bba/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 11:26:48,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:26:48,039 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-16 11:26:48,044 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:26:48,312 WARN L855 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_main_#t~malloc12#1.base_13| (_ BitVec 32))) (and (= (_ bv0 1) (select |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_#t~malloc12#1.base_13|)) (= |c_#valid| (store |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_#t~malloc12#1.base_13| (_ bv0 1))))) is different from true [2022-11-16 11:26:48,314 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-16 11:26:48,314 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 11:26:48,314 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 11:26:48,315 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [444201064] [2022-11-16 11:26:48,315 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [444201064] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:26:48,315 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:26:48,315 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-16 11:26:48,316 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [257665484] [2022-11-16 11:26:48,316 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:26:48,317 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-16 11:26:48,317 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 11:26:48,318 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-16 11:26:48,318 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=8, Unknown=1, NotChecked=4, Total=20 [2022-11-16 11:26:48,319 INFO L87 Difference]: Start difference. First operand 129 states and 155 transitions. Second operand has 5 states, 4 states have (on average 6.0) internal successors, (24), 5 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:26:48,341 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:26:48,342 INFO L93 Difference]: Finished difference Result 173 states and 207 transitions. [2022-11-16 11:26:48,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 11:26:48,343 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 6.0) internal successors, (24), 5 states have internal predecessors, (24), 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 25 [2022-11-16 11:26:48,346 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:26:48,347 INFO L225 Difference]: With dead ends: 173 [2022-11-16 11:26:48,347 INFO L226 Difference]: Without dead ends: 161 [2022-11-16 11:26:48,347 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=8, Unknown=1, NotChecked=4, Total=20 [2022-11-16 11:26:48,349 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 4 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 56 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 36 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-16 11:26:48,350 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 56 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 36 Unchecked, 0.0s Time] [2022-11-16 11:26:48,351 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 161 states. [2022-11-16 11:26:48,364 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 161 to 139. [2022-11-16 11:26:48,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 139 states, 136 states have (on average 1.2058823529411764) internal successors, (164), 138 states have internal predecessors, (164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:26:48,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 164 transitions. [2022-11-16 11:26:48,369 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 164 transitions. Word has length 25 [2022-11-16 11:26:48,370 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:26:48,370 INFO L495 AbstractCegarLoop]: Abstraction has 139 states and 164 transitions. [2022-11-16 11:26:48,370 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 6.0) internal successors, (24), 5 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:26:48,371 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 164 transitions. [2022-11-16 11:26:48,375 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-11-16 11:26:48,378 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:26:48,378 INFO L195 NwaCegarLoop]: trace histogram [2, 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 11:26:48,399 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c04a0f81-8b6c-4bc8-9c3a-7f4603344bba/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)] Ended with exit code 0 [2022-11-16 11:26:48,593 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c04a0f81-8b6c-4bc8-9c3a-7f4603344bba/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 11:26:48,594 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2022-11-16 11:26:48,594 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:26:48,594 INFO L85 PathProgramCache]: Analyzing trace with hash 989408118, now seen corresponding path program 1 times [2022-11-16 11:26:48,595 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 11:26:48,595 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [613368996] [2022-11-16 11:26:48,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:26:48,595 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 11:26:48,596 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c04a0f81-8b6c-4bc8-9c3a-7f4603344bba/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 11:26:48,597 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c04a0f81-8b6c-4bc8-9c3a-7f4603344bba/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 11:26:48,598 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c04a0f81-8b6c-4bc8-9c3a-7f4603344bba/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 11:26:48,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:26:48,736 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-16 11:26:48,739 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:26:48,924 WARN L855 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_main_#t~malloc12#1.base_14| (_ BitVec 32))) (and (= |c_#valid| (store |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_#t~malloc12#1.base_14| (_ bv0 1))) (= (select |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_#t~malloc12#1.base_14|) (_ bv0 1)))) is different from true [2022-11-16 11:26:48,925 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-16 11:26:48,925 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 11:26:48,926 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 11:26:48,926 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [613368996] [2022-11-16 11:26:48,926 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [613368996] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:26:48,926 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:26:48,927 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-16 11:26:48,927 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [715633043] [2022-11-16 11:26:48,927 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:26:48,928 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-16 11:26:48,928 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 11:26:48,928 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-16 11:26:48,929 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=8, Unknown=1, NotChecked=4, Total=20 [2022-11-16 11:26:48,929 INFO L87 Difference]: Start difference. First operand 139 states and 164 transitions. Second operand has 5 states, 4 states have (on average 6.0) internal successors, (24), 5 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:26:48,951 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:26:48,951 INFO L93 Difference]: Finished difference Result 195 states and 234 transitions. [2022-11-16 11:26:48,951 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 11:26:48,952 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 6.0) internal successors, (24), 5 states have internal predecessors, (24), 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 25 [2022-11-16 11:26:48,952 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:26:48,953 INFO L225 Difference]: With dead ends: 195 [2022-11-16 11:26:48,953 INFO L226 Difference]: Without dead ends: 191 [2022-11-16 11:26:48,953 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=8, Unknown=1, NotChecked=4, Total=20 [2022-11-16 11:26:48,954 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 4 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 56 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 36 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-16 11:26:48,955 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 56 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 36 Unchecked, 0.0s Time] [2022-11-16 11:26:48,956 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 191 states. [2022-11-16 11:26:48,959 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 191 to 183. [2022-11-16 11:26:48,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 183 states, 180 states have (on average 1.2222222222222223) internal successors, (220), 182 states have internal predecessors, (220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:26:48,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 183 states to 183 states and 220 transitions. [2022-11-16 11:26:48,962 INFO L78 Accepts]: Start accepts. Automaton has 183 states and 220 transitions. Word has length 25 [2022-11-16 11:26:48,962 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:26:48,962 INFO L495 AbstractCegarLoop]: Abstraction has 183 states and 220 transitions. [2022-11-16 11:26:48,963 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 6.0) internal successors, (24), 5 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:26:48,963 INFO L276 IsEmpty]: Start isEmpty. Operand 183 states and 220 transitions. [2022-11-16 11:26:48,964 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-11-16 11:26:48,964 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:26:48,965 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:26:48,979 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c04a0f81-8b6c-4bc8-9c3a-7f4603344bba/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 11:26:49,179 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c04a0f81-8b6c-4bc8-9c3a-7f4603344bba/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 11:26:49,179 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2022-11-16 11:26:49,180 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:26:49,180 INFO L85 PathProgramCache]: Analyzing trace with hash -2063932537, now seen corresponding path program 2 times [2022-11-16 11:26:49,180 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 11:26:49,181 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [946535107] [2022-11-16 11:26:49,181 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-16 11:26:49,181 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 11:26:49,181 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c04a0f81-8b6c-4bc8-9c3a-7f4603344bba/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 11:26:49,183 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c04a0f81-8b6c-4bc8-9c3a-7f4603344bba/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 11:26:49,188 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c04a0f81-8b6c-4bc8-9c3a-7f4603344bba/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 11:26:49,326 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-16 11:26:49,326 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 11:26:49,333 INFO L263 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 19 conjunts are in the unsatisfiable core [2022-11-16 11:26:49,335 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:26:49,369 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 8 treesize of output 7 [2022-11-16 11:26:49,923 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 16 proven. 3 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-16 11:26:49,923 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:26:52,209 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:26:52,210 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 11:26:52,210 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [946535107] [2022-11-16 11:26:52,210 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [946535107] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 11:26:52,211 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-16 11:26:52,211 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 10] total 17 [2022-11-16 11:26:52,211 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [131096626] [2022-11-16 11:26:52,211 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-16 11:26:52,212 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-11-16 11:26:52,212 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 11:26:52,213 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-11-16 11:26:52,213 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=224, Unknown=0, NotChecked=0, Total=272 [2022-11-16 11:26:52,214 INFO L87 Difference]: Start difference. First operand 183 states and 220 transitions. Second operand has 17 states, 17 states have (on average 3.1176470588235294) internal successors, (53), 17 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:26:53,212 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:26:53,212 INFO L93 Difference]: Finished difference Result 203 states and 241 transitions. [2022-11-16 11:26:53,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-16 11:26:53,213 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 3.1176470588235294) internal successors, (53), 17 states have internal predecessors, (53), 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 30 [2022-11-16 11:26:53,214 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:26:53,215 INFO L225 Difference]: With dead ends: 203 [2022-11-16 11:26:53,215 INFO L226 Difference]: Without dead ends: 200 [2022-11-16 11:26:53,215 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=65, Invalid=277, Unknown=0, NotChecked=0, Total=342 [2022-11-16 11:26:53,216 INFO L413 NwaCegarLoop]: 20 mSDtfsCounter, 28 mSDsluCounter, 147 mSDsCounter, 0 mSdLazyCounter, 97 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 167 SdHoareTripleChecker+Invalid, 123 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 97 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 20 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-16 11:26:53,217 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 167 Invalid, 123 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 97 Invalid, 0 Unknown, 20 Unchecked, 0.7s Time] [2022-11-16 11:26:53,217 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 200 states. [2022-11-16 11:26:53,222 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 200 to 189. [2022-11-16 11:26:53,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 189 states, 186 states have (on average 1.2204301075268817) internal successors, (227), 188 states have internal predecessors, (227), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:26:53,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 189 states to 189 states and 227 transitions. [2022-11-16 11:26:53,224 INFO L78 Accepts]: Start accepts. Automaton has 189 states and 227 transitions. Word has length 30 [2022-11-16 11:26:53,224 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:26:53,225 INFO L495 AbstractCegarLoop]: Abstraction has 189 states and 227 transitions. [2022-11-16 11:26:53,225 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 3.1176470588235294) internal successors, (53), 17 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:26:53,225 INFO L276 IsEmpty]: Start isEmpty. Operand 189 states and 227 transitions. [2022-11-16 11:26:53,226 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2022-11-16 11:26:53,226 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:26:53,227 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 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 11:26:53,247 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c04a0f81-8b6c-4bc8-9c3a-7f4603344bba/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 11:26:53,442 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c04a0f81-8b6c-4bc8-9c3a-7f4603344bba/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 11:26:53,442 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2022-11-16 11:26:53,443 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:26:53,443 INFO L85 PathProgramCache]: Analyzing trace with hash 630576131, now seen corresponding path program 1 times [2022-11-16 11:26:53,443 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 11:26:53,443 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1806439971] [2022-11-16 11:26:53,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:26:53,443 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 11:26:53,443 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c04a0f81-8b6c-4bc8-9c3a-7f4603344bba/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 11:26:53,444 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c04a0f81-8b6c-4bc8-9c3a-7f4603344bba/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 11:26:53,446 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c04a0f81-8b6c-4bc8-9c3a-7f4603344bba/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 11:26:53,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:26:53,587 INFO L263 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 14 conjunts are in the unsatisfiable core [2022-11-16 11:26:53,591 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:26:53,877 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-16 11:26:53,877 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 260 treesize of output 93 [2022-11-16 11:26:54,449 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-16 11:26:54,450 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 173 treesize of output 68 [2022-11-16 11:26:54,561 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-16 11:26:54,561 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 11:26:54,562 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 11:26:54,562 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1806439971] [2022-11-16 11:26:54,562 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1806439971] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:26:54,562 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:26:54,562 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-16 11:26:54,563 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [3424022] [2022-11-16 11:26:54,563 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:26:54,563 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-16 11:26:54,564 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 11:26:54,564 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-16 11:26:54,565 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2022-11-16 11:26:54,565 INFO L87 Difference]: Start difference. First operand 189 states and 227 transitions. Second operand has 10 states, 10 states have (on average 3.1) internal successors, (31), 10 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:26:54,810 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:26:54,811 INFO L93 Difference]: Finished difference Result 187 states and 223 transitions. [2022-11-16 11:26:54,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-16 11:26:54,815 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.1) internal successors, (31), 10 states have internal predecessors, (31), 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 31 [2022-11-16 11:26:54,815 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:26:54,816 INFO L225 Difference]: With dead ends: 187 [2022-11-16 11:26:54,817 INFO L226 Difference]: Without dead ends: 169 [2022-11-16 11:26:54,817 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2022-11-16 11:26:54,818 INFO L413 NwaCegarLoop]: 27 mSDtfsCounter, 3 mSDsluCounter, 74 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 101 SdHoareTripleChecker+Invalid, 70 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 36 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-16 11:26:54,818 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 101 Invalid, 70 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 34 Invalid, 0 Unknown, 36 Unchecked, 0.2s Time] [2022-11-16 11:26:54,819 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169 states. [2022-11-16 11:26:54,823 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169 to 169. [2022-11-16 11:26:54,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 169 states, 166 states have (on average 1.2289156626506024) internal successors, (204), 168 states have internal predecessors, (204), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:26:54,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 169 states to 169 states and 204 transitions. [2022-11-16 11:26:54,826 INFO L78 Accepts]: Start accepts. Automaton has 169 states and 204 transitions. Word has length 31 [2022-11-16 11:26:54,826 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:26:54,826 INFO L495 AbstractCegarLoop]: Abstraction has 169 states and 204 transitions. [2022-11-16 11:26:54,826 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 3.1) internal successors, (31), 10 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:26:54,827 INFO L276 IsEmpty]: Start isEmpty. Operand 169 states and 204 transitions. [2022-11-16 11:26:54,827 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2022-11-16 11:26:54,828 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:26:54,828 INFO L195 NwaCegarLoop]: trace histogram [8, 7, 7, 7, 1, 1, 1, 1, 1] [2022-11-16 11:26:54,848 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c04a0f81-8b6c-4bc8-9c3a-7f4603344bba/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 11:26:55,042 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c04a0f81-8b6c-4bc8-9c3a-7f4603344bba/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 11:26:55,043 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2022-11-16 11:26:55,043 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:26:55,043 INFO L85 PathProgramCache]: Analyzing trace with hash -563143139, now seen corresponding path program 3 times [2022-11-16 11:26:55,043 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 11:26:55,044 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [274413169] [2022-11-16 11:26:55,044 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-16 11:26:55,044 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 11:26:55,044 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c04a0f81-8b6c-4bc8-9c3a-7f4603344bba/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 11:26:55,045 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c04a0f81-8b6c-4bc8-9c3a-7f4603344bba/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 11:26:55,047 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c04a0f81-8b6c-4bc8-9c3a-7f4603344bba/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 11:26:55,274 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2022-11-16 11:26:55,274 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 11:26:55,281 INFO L263 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 19 conjunts are in the unsatisfiable core [2022-11-16 11:26:55,284 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:26:55,320 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 8 treesize of output 7 [2022-11-16 11:26:56,585 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 0 proven. 98 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:26:56,586 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:27:00,844 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 0 proven. 98 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:27:00,844 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 11:27:00,844 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [274413169] [2022-11-16 11:27:00,845 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [274413169] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 11:27:00,845 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-16 11:27:00,845 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 23 [2022-11-16 11:27:00,845 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [102339529] [2022-11-16 11:27:00,846 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-16 11:27:00,846 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-11-16 11:27:00,847 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 11:27:00,847 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-11-16 11:27:00,848 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=152, Invalid=400, Unknown=0, NotChecked=0, Total=552 [2022-11-16 11:27:00,848 INFO L87 Difference]: Start difference. First operand 169 states and 204 transitions. Second operand has 24 states, 23 states have (on average 2.869565217391304) internal successors, (66), 24 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:27:08,200 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-16 11:27:13,774 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.97s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-16 11:27:25,163 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:27:25,163 INFO L93 Difference]: Finished difference Result 1844 states and 2231 transitions. [2022-11-16 11:27:25,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2022-11-16 11:27:25,165 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 23 states have (on average 2.869565217391304) internal successors, (66), 24 states have internal predecessors, (66), 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 34 [2022-11-16 11:27:25,165 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:27:25,172 INFO L225 Difference]: With dead ends: 1844 [2022-11-16 11:27:25,173 INFO L226 Difference]: Without dead ends: 1844 [2022-11-16 11:27:25,174 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 56 SyntacticMatches, 1 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 509 ImplicationChecksByTransitivity, 17.5s TimeCoverageRelationStatistics Valid=547, Invalid=1259, Unknown=0, NotChecked=0, Total=1806 [2022-11-16 11:27:25,175 INFO L413 NwaCegarLoop]: 102 mSDtfsCounter, 1349 mSDsluCounter, 835 mSDsCounter, 0 mSdLazyCounter, 822 mSolverCounterSat, 30 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1349 SdHoareTripleChecker+Valid, 937 SdHoareTripleChecker+Invalid, 869 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 822 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 16 IncrementalHoareTripleChecker+Unchecked, 9.4s IncrementalHoareTripleChecker+Time [2022-11-16 11:27:25,175 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1349 Valid, 937 Invalid, 869 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 822 Invalid, 1 Unknown, 16 Unchecked, 9.4s Time] [2022-11-16 11:27:25,178 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1844 states. [2022-11-16 11:27:25,196 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1844 to 201. [2022-11-16 11:27:25,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 201 states, 198 states have (on average 1.2323232323232323) internal successors, (244), 200 states have internal predecessors, (244), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:27:25,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 201 states to 201 states and 244 transitions. [2022-11-16 11:27:25,198 INFO L78 Accepts]: Start accepts. Automaton has 201 states and 244 transitions. Word has length 34 [2022-11-16 11:27:25,199 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:27:25,199 INFO L495 AbstractCegarLoop]: Abstraction has 201 states and 244 transitions. [2022-11-16 11:27:25,199 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 23 states have (on average 2.869565217391304) internal successors, (66), 24 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:27:25,200 INFO L276 IsEmpty]: Start isEmpty. Operand 201 states and 244 transitions. [2022-11-16 11:27:25,200 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2022-11-16 11:27:25,200 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:27:25,201 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:27:25,217 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c04a0f81-8b6c-4bc8-9c3a-7f4603344bba/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 11:27:25,414 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c04a0f81-8b6c-4bc8-9c3a-7f4603344bba/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 11:27:25,414 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2022-11-16 11:27:25,415 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:27:25,415 INFO L85 PathProgramCache]: Analyzing trace with hash 913185738, now seen corresponding path program 3 times [2022-11-16 11:27:25,416 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 11:27:25,416 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1306325171] [2022-11-16 11:27:25,416 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-16 11:27:25,416 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 11:27:25,416 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c04a0f81-8b6c-4bc8-9c3a-7f4603344bba/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 11:27:25,418 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c04a0f81-8b6c-4bc8-9c3a-7f4603344bba/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 11:27:25,434 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c04a0f81-8b6c-4bc8-9c3a-7f4603344bba/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 11:27:25,634 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-11-16 11:27:25,634 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 11:27:25,644 INFO L263 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 23 conjunts are in the unsatisfiable core [2022-11-16 11:27:25,647 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:27:25,677 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 8 treesize of output 7 [2022-11-16 11:27:26,703 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 3 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:27:26,704 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:27:29,342 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:27:29,342 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 11:27:29,342 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1306325171] [2022-11-16 11:27:29,343 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1306325171] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 11:27:29,343 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-16 11:27:29,343 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10] total 20 [2022-11-16 11:27:29,343 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1254855524] [2022-11-16 11:27:29,343 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-16 11:27:29,344 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-11-16 11:27:29,344 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 11:27:29,344 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-11-16 11:27:29,345 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=302, Unknown=0, NotChecked=0, Total=380 [2022-11-16 11:27:29,345 INFO L87 Difference]: Start difference. First operand 201 states and 244 transitions. Second operand has 20 states, 20 states have (on average 3.3) internal successors, (66), 20 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:27:36,863 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:27:36,863 INFO L93 Difference]: Finished difference Result 388 states and 456 transitions. [2022-11-16 11:27:36,866 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-11-16 11:27:36,867 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 3.3) internal successors, (66), 20 states have internal predecessors, (66), 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 34 [2022-11-16 11:27:36,867 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:27:36,869 INFO L225 Difference]: With dead ends: 388 [2022-11-16 11:27:36,869 INFO L226 Difference]: Without dead ends: 344 [2022-11-16 11:27:36,870 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 238 ImplicationChecksByTransitivity, 6.6s TimeCoverageRelationStatistics Valid=401, Invalid=1159, Unknown=0, NotChecked=0, Total=1560 [2022-11-16 11:27:36,871 INFO L413 NwaCegarLoop]: 42 mSDtfsCounter, 778 mSDsluCounter, 331 mSDsCounter, 0 mSdLazyCounter, 508 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 778 SdHoareTripleChecker+Valid, 373 SdHoareTripleChecker+Invalid, 530 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 508 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2022-11-16 11:27:36,872 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [778 Valid, 373 Invalid, 530 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 508 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2022-11-16 11:27:36,873 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 344 states. [2022-11-16 11:27:36,879 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 344 to 289. [2022-11-16 11:27:36,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 289 states, 286 states have (on average 1.2132867132867133) internal successors, (347), 288 states have internal predecessors, (347), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:27:36,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 289 states to 289 states and 347 transitions. [2022-11-16 11:27:36,883 INFO L78 Accepts]: Start accepts. Automaton has 289 states and 347 transitions. Word has length 34 [2022-11-16 11:27:36,883 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:27:36,883 INFO L495 AbstractCegarLoop]: Abstraction has 289 states and 347 transitions. [2022-11-16 11:27:36,883 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 3.3) internal successors, (66), 20 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:27:36,884 INFO L276 IsEmpty]: Start isEmpty. Operand 289 states and 347 transitions. [2022-11-16 11:27:36,886 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2022-11-16 11:27:36,886 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:27:36,887 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 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 11:27:36,912 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c04a0f81-8b6c-4bc8-9c3a-7f4603344bba/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 11:27:37,103 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c04a0f81-8b6c-4bc8-9c3a-7f4603344bba/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 11:27:37,103 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2022-11-16 11:27:37,104 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:27:37,104 INFO L85 PathProgramCache]: Analyzing trace with hash 1523871233, now seen corresponding path program 1 times [2022-11-16 11:27:37,104 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 11:27:37,104 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1328871122] [2022-11-16 11:27:37,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:27:37,105 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 11:27:37,105 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c04a0f81-8b6c-4bc8-9c3a-7f4603344bba/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 11:27:37,106 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c04a0f81-8b6c-4bc8-9c3a-7f4603344bba/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 11:27:37,130 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c04a0f81-8b6c-4bc8-9c3a-7f4603344bba/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 11:27:37,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:27:37,260 INFO L263 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 19 conjunts are in the unsatisfiable core [2022-11-16 11:27:37,263 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:27:37,638 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 11 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-16 11:27:37,638 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:27:37,939 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 11 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-16 11:27:37,939 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 11:27:37,939 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1328871122] [2022-11-16 11:27:37,940 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1328871122] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 11:27:37,940 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-16 11:27:37,940 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7] total 13 [2022-11-16 11:27:37,940 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1868719819] [2022-11-16 11:27:37,941 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-16 11:27:37,941 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-16 11:27:37,941 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 11:27:37,942 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-16 11:27:37,942 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2022-11-16 11:27:37,942 INFO L87 Difference]: Start difference. First operand 289 states and 347 transitions. Second operand has 13 states, 13 states have (on average 4.230769230769231) internal successors, (55), 13 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:27:38,630 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:27:38,630 INFO L93 Difference]: Finished difference Result 313 states and 372 transitions. [2022-11-16 11:27:38,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-16 11:27:38,632 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 4.230769230769231) internal successors, (55), 13 states have internal predecessors, (55), 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 37 [2022-11-16 11:27:38,633 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:27:38,634 INFO L225 Difference]: With dead ends: 313 [2022-11-16 11:27:38,634 INFO L226 Difference]: Without dead ends: 289 [2022-11-16 11:27:38,635 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 61 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=83, Invalid=223, Unknown=0, NotChecked=0, Total=306 [2022-11-16 11:27:38,635 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 101 mSDsluCounter, 148 mSDsCounter, 0 mSdLazyCounter, 131 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 101 SdHoareTripleChecker+Valid, 165 SdHoareTripleChecker+Invalid, 136 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 131 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-16 11:27:38,636 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [101 Valid, 165 Invalid, 136 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 131 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-16 11:27:38,637 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 289 states. [2022-11-16 11:27:38,643 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 289 to 289. [2022-11-16 11:27:38,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 289 states, 286 states have (on average 1.2097902097902098) internal successors, (346), 288 states have internal predecessors, (346), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:27:38,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 289 states to 289 states and 346 transitions. [2022-11-16 11:27:38,646 INFO L78 Accepts]: Start accepts. Automaton has 289 states and 346 transitions. Word has length 37 [2022-11-16 11:27:38,646 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:27:38,646 INFO L495 AbstractCegarLoop]: Abstraction has 289 states and 346 transitions. [2022-11-16 11:27:38,646 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 4.230769230769231) internal successors, (55), 13 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:27:38,647 INFO L276 IsEmpty]: Start isEmpty. Operand 289 states and 346 transitions. [2022-11-16 11:27:38,647 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2022-11-16 11:27:38,648 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:27:38,648 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:27:38,672 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c04a0f81-8b6c-4bc8-9c3a-7f4603344bba/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 11:27:38,862 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c04a0f81-8b6c-4bc8-9c3a-7f4603344bba/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 11:27:38,862 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2022-11-16 11:27:38,863 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:27:38,863 INFO L85 PathProgramCache]: Analyzing trace with hash 599848030, now seen corresponding path program 2 times [2022-11-16 11:27:38,863 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 11:27:38,864 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [5196129] [2022-11-16 11:27:38,864 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-16 11:27:38,864 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 11:27:38,864 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c04a0f81-8b6c-4bc8-9c3a-7f4603344bba/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 11:27:38,866 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c04a0f81-8b6c-4bc8-9c3a-7f4603344bba/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 11:27:38,917 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c04a0f81-8b6c-4bc8-9c3a-7f4603344bba/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 11:27:38,985 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-16 11:27:38,986 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 11:27:38,988 INFO L263 TraceCheckSpWp]: Trace formula consists of 35 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-16 11:27:38,990 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:27:39,313 WARN L855 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_main_#t~malloc12#1.base_19| (_ BitVec 32))) (and (= (_ bv0 1) (select |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_#t~malloc12#1.base_19|)) (= |c_#valid| (store |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_#t~malloc12#1.base_19| (_ bv0 1))))) is different from true [2022-11-16 11:27:39,314 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-11-16 11:27:39,315 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 11:27:39,315 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 11:27:39,315 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [5196129] [2022-11-16 11:27:39,315 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [5196129] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:27:39,315 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:27:39,315 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-16 11:27:39,315 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1588062567] [2022-11-16 11:27:39,316 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:27:39,316 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-16 11:27:39,316 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 11:27:39,316 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-16 11:27:39,317 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=8, Unknown=1, NotChecked=4, Total=20 [2022-11-16 11:27:39,317 INFO L87 Difference]: Start difference. First operand 289 states and 346 transitions. Second operand has 5 states, 4 states have (on average 7.25) internal successors, (29), 5 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:27:39,331 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:27:39,331 INFO L93 Difference]: Finished difference Result 288 states and 345 transitions. [2022-11-16 11:27:39,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 11:27:39,332 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 7.25) internal successors, (29), 5 states have internal predecessors, (29), 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 41 [2022-11-16 11:27:39,333 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:27:39,334 INFO L225 Difference]: With dead ends: 288 [2022-11-16 11:27:39,334 INFO L226 Difference]: Without dead ends: 240 [2022-11-16 11:27:39,334 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=8, Unknown=1, NotChecked=4, Total=20 [2022-11-16 11:27:39,335 INFO L413 NwaCegarLoop]: 21 mSDtfsCounter, 2 mSDsluCounter, 19 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 40 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 32 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-16 11:27:39,335 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 40 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 32 Unchecked, 0.0s Time] [2022-11-16 11:27:39,336 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 240 states. [2022-11-16 11:27:39,340 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 240 to 143. [2022-11-16 11:27:39,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 143 states, 141 states have (on average 1.1914893617021276) internal successors, (168), 142 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:27:39,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 168 transitions. [2022-11-16 11:27:39,342 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 168 transitions. Word has length 41 [2022-11-16 11:27:39,342 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:27:39,342 INFO L495 AbstractCegarLoop]: Abstraction has 143 states and 168 transitions. [2022-11-16 11:27:39,342 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 7.25) internal successors, (29), 5 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:27:39,343 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 168 transitions. [2022-11-16 11:27:39,343 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2022-11-16 11:27:39,343 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:27:39,344 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:27:39,359 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c04a0f81-8b6c-4bc8-9c3a-7f4603344bba/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)] Forceful destruction successful, exit code 0 [2022-11-16 11:27:39,558 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c04a0f81-8b6c-4bc8-9c3a-7f4603344bba/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 11:27:39,558 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2022-11-16 11:27:39,559 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:27:39,559 INFO L85 PathProgramCache]: Analyzing trace with hash -720923439, now seen corresponding path program 4 times [2022-11-16 11:27:39,559 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 11:27:39,560 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1474398453] [2022-11-16 11:27:39,560 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-16 11:27:39,560 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 11:27:39,560 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c04a0f81-8b6c-4bc8-9c3a-7f4603344bba/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 11:27:39,561 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c04a0f81-8b6c-4bc8-9c3a-7f4603344bba/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 11:27:39,566 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c04a0f81-8b6c-4bc8-9c3a-7f4603344bba/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 11:27:39,708 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-16 11:27:39,708 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 11:27:39,715 INFO L263 TraceCheckSpWp]: Trace formula consists of 128 conjuncts, 22 conjunts are in the unsatisfiable core [2022-11-16 11:27:39,718 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:27:39,734 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 8 treesize of output 7 [2022-11-16 11:27:40,847 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 20 proven. 39 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:27:40,847 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:27:45,139 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 0 proven. 59 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:27:45,140 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 11:27:45,140 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1474398453] [2022-11-16 11:27:45,140 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1474398453] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 11:27:45,140 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-16 11:27:45,140 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 13] total 24 [2022-11-16 11:27:45,140 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1429745266] [2022-11-16 11:27:45,141 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-16 11:27:45,141 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-11-16 11:27:45,141 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 11:27:45,142 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-11-16 11:27:45,142 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=468, Unknown=0, NotChecked=0, Total=552 [2022-11-16 11:27:45,142 INFO L87 Difference]: Start difference. First operand 143 states and 168 transitions. Second operand has 24 states, 24 states have (on average 3.5833333333333335) internal successors, (86), 24 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:27:46,244 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:27:46,244 INFO L93 Difference]: Finished difference Result 174 states and 204 transitions. [2022-11-16 11:27:46,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-16 11:27:46,247 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 3.5833333333333335) internal successors, (86), 24 states have internal predecessors, (86), 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 44 [2022-11-16 11:27:46,247 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:27:46,248 INFO L225 Difference]: With dead ends: 174 [2022-11-16 11:27:46,249 INFO L226 Difference]: Without dead ends: 171 [2022-11-16 11:27:46,249 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 64 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 112 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=105, Invalid=545, Unknown=0, NotChecked=0, Total=650 [2022-11-16 11:27:46,250 INFO L413 NwaCegarLoop]: 26 mSDtfsCounter, 52 mSDsluCounter, 321 mSDsCounter, 0 mSdLazyCounter, 132 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 347 SdHoareTripleChecker+Invalid, 220 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 132 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 79 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-16 11:27:46,251 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [52 Valid, 347 Invalid, 220 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 132 Invalid, 0 Unknown, 79 Unchecked, 0.7s Time] [2022-11-16 11:27:46,251 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171 states. [2022-11-16 11:27:46,254 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171 to 161. [2022-11-16 11:27:46,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 161 states, 159 states have (on average 1.20125786163522) internal successors, (191), 160 states have internal predecessors, (191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:27:46,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161 states to 161 states and 191 transitions. [2022-11-16 11:27:46,256 INFO L78 Accepts]: Start accepts. Automaton has 161 states and 191 transitions. Word has length 44 [2022-11-16 11:27:46,257 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:27:46,257 INFO L495 AbstractCegarLoop]: Abstraction has 161 states and 191 transitions. [2022-11-16 11:27:46,257 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 3.5833333333333335) internal successors, (86), 24 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:27:46,258 INFO L276 IsEmpty]: Start isEmpty. Operand 161 states and 191 transitions. [2022-11-16 11:27:46,258 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2022-11-16 11:27:46,258 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:27:46,259 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:27:46,275 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c04a0f81-8b6c-4bc8-9c3a-7f4603344bba/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)] Ended with exit code 0 [2022-11-16 11:27:46,475 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c04a0f81-8b6c-4bc8-9c3a-7f4603344bba/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 11:27:46,475 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2022-11-16 11:27:46,475 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:27:46,476 INFO L85 PathProgramCache]: Analyzing trace with hash 82156500, now seen corresponding path program 5 times [2022-11-16 11:27:46,476 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 11:27:46,476 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1110845913] [2022-11-16 11:27:46,476 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-11-16 11:27:46,476 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 11:27:46,476 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c04a0f81-8b6c-4bc8-9c3a-7f4603344bba/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 11:27:46,477 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c04a0f81-8b6c-4bc8-9c3a-7f4603344bba/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 11:27:46,480 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c04a0f81-8b6c-4bc8-9c3a-7f4603344bba/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 11:27:46,794 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2022-11-16 11:27:46,794 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 11:27:46,808 INFO L263 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 25 conjunts are in the unsatisfiable core [2022-11-16 11:27:46,810 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:27:46,832 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 8 treesize of output 7 [2022-11-16 11:27:48,353 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 72 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:27:48,353 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:27:54,240 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 10 proven. 62 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:27:54,241 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 11:27:54,241 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1110845913] [2022-11-16 11:27:54,241 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1110845913] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 11:27:54,241 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-16 11:27:54,242 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 14] total 26 [2022-11-16 11:27:54,242 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [882167802] [2022-11-16 11:27:54,242 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-16 11:27:54,243 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-11-16 11:27:54,243 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 11:27:54,243 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-11-16 11:27:54,244 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=129, Invalid=573, Unknown=0, NotChecked=0, Total=702 [2022-11-16 11:27:54,244 INFO L87 Difference]: Start difference. First operand 161 states and 191 transitions. Second operand has 27 states, 26 states have (on average 3.6153846153846154) internal successors, (94), 27 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:27:59,146 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.36s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-16 11:28:11,031 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:28:11,031 INFO L93 Difference]: Finished difference Result 343 states and 402 transitions. [2022-11-16 11:28:11,033 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-11-16 11:28:11,034 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 26 states have (on average 3.6153846153846154) internal successors, (94), 27 states have internal predecessors, (94), 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 48 [2022-11-16 11:28:11,034 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:28:11,035 INFO L225 Difference]: With dead ends: 343 [2022-11-16 11:28:11,035 INFO L226 Difference]: Without dead ends: 343 [2022-11-16 11:28:11,035 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 70 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 552 ImplicationChecksByTransitivity, 14.7s TimeCoverageRelationStatistics Valid=605, Invalid=2047, Unknown=0, NotChecked=0, Total=2652 [2022-11-16 11:28:11,036 INFO L413 NwaCegarLoop]: 47 mSDtfsCounter, 1399 mSDsluCounter, 534 mSDsCounter, 0 mSdLazyCounter, 707 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1399 SdHoareTripleChecker+Valid, 581 SdHoareTripleChecker+Invalid, 855 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 707 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 106 IncrementalHoareTripleChecker+Unchecked, 6.1s IncrementalHoareTripleChecker+Time [2022-11-16 11:28:11,036 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1399 Valid, 581 Invalid, 855 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 707 Invalid, 0 Unknown, 106 Unchecked, 6.1s Time] [2022-11-16 11:28:11,037 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 343 states. [2022-11-16 11:28:11,043 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 343 to 251. [2022-11-16 11:28:11,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 251 states, 249 states have (on average 1.1887550200803212) internal successors, (296), 250 states have internal predecessors, (296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:28:11,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 251 states to 251 states and 296 transitions. [2022-11-16 11:28:11,045 INFO L78 Accepts]: Start accepts. Automaton has 251 states and 296 transitions. Word has length 48 [2022-11-16 11:28:11,046 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:28:11,046 INFO L495 AbstractCegarLoop]: Abstraction has 251 states and 296 transitions. [2022-11-16 11:28:11,046 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 26 states have (on average 3.6153846153846154) internal successors, (94), 27 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:28:11,046 INFO L276 IsEmpty]: Start isEmpty. Operand 251 states and 296 transitions. [2022-11-16 11:28:11,047 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2022-11-16 11:28:11,048 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:28:11,048 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:28:11,071 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c04a0f81-8b6c-4bc8-9c3a-7f4603344bba/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 11:28:11,266 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c04a0f81-8b6c-4bc8-9c3a-7f4603344bba/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 11:28:11,266 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2022-11-16 11:28:11,266 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:28:11,267 INFO L85 PathProgramCache]: Analyzing trace with hash -265635160, now seen corresponding path program 1 times [2022-11-16 11:28:11,267 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 11:28:11,267 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [290686547] [2022-11-16 11:28:11,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:28:11,267 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 11:28:11,267 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c04a0f81-8b6c-4bc8-9c3a-7f4603344bba/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 11:28:11,269 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c04a0f81-8b6c-4bc8-9c3a-7f4603344bba/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 11:28:11,275 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c04a0f81-8b6c-4bc8-9c3a-7f4603344bba/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)] Waiting until timeout for monitored process [2022-11-16 11:28:11,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:28:11,438 INFO L263 TraceCheckSpWp]: Trace formula consists of 165 conjuncts, 23 conjunts are in the unsatisfiable core [2022-11-16 11:28:11,440 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:28:11,456 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 8 treesize of output 7 [2022-11-16 11:28:12,722 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 44 proven. 43 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-11-16 11:28:12,722 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:28:17,621 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 0 proven. 93 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-16 11:28:17,621 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 11:28:17,622 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [290686547] [2022-11-16 11:28:17,622 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [290686547] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 11:28:17,622 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-16 11:28:17,622 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 14] total 25 [2022-11-16 11:28:17,622 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [816207608] [2022-11-16 11:28:17,622 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-16 11:28:17,623 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-11-16 11:28:17,623 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 11:28:17,624 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-11-16 11:28:17,625 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=514, Unknown=0, NotChecked=0, Total=600 [2022-11-16 11:28:17,625 INFO L87 Difference]: Start difference. First operand 251 states and 296 transitions. Second operand has 25 states, 25 states have (on average 4.12) internal successors, (103), 25 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:28:19,017 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:28:19,017 INFO L93 Difference]: Finished difference Result 274 states and 319 transitions. [2022-11-16 11:28:19,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-16 11:28:19,019 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 4.12) internal successors, (103), 25 states have internal predecessors, (103), 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 56 [2022-11-16 11:28:19,020 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:28:19,022 INFO L225 Difference]: With dead ends: 274 [2022-11-16 11:28:19,022 INFO L226 Difference]: Without dead ends: 263 [2022-11-16 11:28:19,023 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 88 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 119 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=104, Invalid=598, Unknown=0, NotChecked=0, Total=702 [2022-11-16 11:28:19,024 INFO L413 NwaCegarLoop]: 29 mSDtfsCounter, 73 mSDsluCounter, 334 mSDsCounter, 0 mSdLazyCounter, 167 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 73 SdHoareTripleChecker+Valid, 363 SdHoareTripleChecker+Invalid, 262 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 167 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 89 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-11-16 11:28:19,025 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [73 Valid, 363 Invalid, 262 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 167 Invalid, 0 Unknown, 89 Unchecked, 1.1s Time] [2022-11-16 11:28:19,026 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 263 states. [2022-11-16 11:28:19,031 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 263 to 249. [2022-11-16 11:28:19,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 249 states, 247 states have (on average 1.1862348178137652) internal successors, (293), 248 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:28:19,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 249 states to 249 states and 293 transitions. [2022-11-16 11:28:19,034 INFO L78 Accepts]: Start accepts. Automaton has 249 states and 293 transitions. Word has length 56 [2022-11-16 11:28:19,034 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:28:19,034 INFO L495 AbstractCegarLoop]: Abstraction has 249 states and 293 transitions. [2022-11-16 11:28:19,035 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 4.12) internal successors, (103), 25 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:28:19,035 INFO L276 IsEmpty]: Start isEmpty. Operand 249 states and 293 transitions. [2022-11-16 11:28:19,041 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2022-11-16 11:28:19,044 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:28:19,044 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:28:19,071 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c04a0f81-8b6c-4bc8-9c3a-7f4603344bba/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)] Forceful destruction successful, exit code 0 [2022-11-16 11:28:19,262 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c04a0f81-8b6c-4bc8-9c3a-7f4603344bba/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 11:28:19,262 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2022-11-16 11:28:19,263 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:28:19,263 INFO L85 PathProgramCache]: Analyzing trace with hash 1427161704, now seen corresponding path program 1 times [2022-11-16 11:28:19,263 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 11:28:19,263 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [50606084] [2022-11-16 11:28:19,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:28:19,264 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 11:28:19,274 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c04a0f81-8b6c-4bc8-9c3a-7f4603344bba/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 11:28:19,276 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c04a0f81-8b6c-4bc8-9c3a-7f4603344bba/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 11:28:19,310 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c04a0f81-8b6c-4bc8-9c3a-7f4603344bba/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 11:28:19,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:28:19,489 INFO L263 TraceCheckSpWp]: Trace formula consists of 165 conjuncts, 23 conjunts are in the unsatisfiable core [2022-11-16 11:28:19,492 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:28:19,513 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 8 treesize of output 7 [2022-11-16 11:28:20,714 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 44 proven. 44 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-11-16 11:28:20,715 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:28:25,237 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 0 proven. 94 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-16 11:28:25,237 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 11:28:25,237 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [50606084] [2022-11-16 11:28:25,237 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [50606084] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 11:28:25,237 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-16 11:28:25,237 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 14] total 25 [2022-11-16 11:28:25,238 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1803350040] [2022-11-16 11:28:25,238 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-16 11:28:25,238 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-11-16 11:28:25,238 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 11:28:25,239 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-11-16 11:28:25,239 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=514, Unknown=0, NotChecked=0, Total=600 [2022-11-16 11:28:25,239 INFO L87 Difference]: Start difference. First operand 249 states and 293 transitions. Second operand has 25 states, 25 states have (on average 4.12) internal successors, (103), 25 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:28:26,949 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:28:26,950 INFO L93 Difference]: Finished difference Result 273 states and 317 transitions. [2022-11-16 11:28:26,951 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-16 11:28:26,952 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 4.12) internal successors, (103), 25 states have internal predecessors, (103), 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 56 [2022-11-16 11:28:26,952 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:28:26,953 INFO L225 Difference]: With dead ends: 273 [2022-11-16 11:28:26,953 INFO L226 Difference]: Without dead ends: 258 [2022-11-16 11:28:26,954 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 87 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 122 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=114, Invalid=642, Unknown=0, NotChecked=0, Total=756 [2022-11-16 11:28:26,954 INFO L413 NwaCegarLoop]: 27 mSDtfsCounter, 82 mSDsluCounter, 289 mSDsCounter, 0 mSdLazyCounter, 202 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 82 SdHoareTripleChecker+Valid, 316 SdHoareTripleChecker+Invalid, 280 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 202 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 69 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-11-16 11:28:26,955 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [82 Valid, 316 Invalid, 280 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 202 Invalid, 0 Unknown, 69 Unchecked, 1.2s Time] [2022-11-16 11:28:26,955 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 258 states. [2022-11-16 11:28:26,960 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 258 to 245. [2022-11-16 11:28:26,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 245 states, 243 states have (on average 1.1851851851851851) internal successors, (288), 244 states have internal predecessors, (288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:28:26,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 245 states to 245 states and 288 transitions. [2022-11-16 11:28:26,962 INFO L78 Accepts]: Start accepts. Automaton has 245 states and 288 transitions. Word has length 56 [2022-11-16 11:28:26,962 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:28:26,962 INFO L495 AbstractCegarLoop]: Abstraction has 245 states and 288 transitions. [2022-11-16 11:28:26,963 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 4.12) internal successors, (103), 25 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:28:26,963 INFO L276 IsEmpty]: Start isEmpty. Operand 245 states and 288 transitions. [2022-11-16 11:28:26,964 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2022-11-16 11:28:26,964 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:28:26,964 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:28:26,980 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c04a0f81-8b6c-4bc8-9c3a-7f4603344bba/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 11:28:27,180 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c04a0f81-8b6c-4bc8-9c3a-7f4603344bba/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 11:28:27,181 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2022-11-16 11:28:27,181 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:28:27,181 INFO L85 PathProgramCache]: Analyzing trace with hash -388791448, now seen corresponding path program 2 times [2022-11-16 11:28:27,182 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 11:28:27,182 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1007776496] [2022-11-16 11:28:27,182 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-16 11:28:27,182 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 11:28:27,182 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c04a0f81-8b6c-4bc8-9c3a-7f4603344bba/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 11:28:27,183 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c04a0f81-8b6c-4bc8-9c3a-7f4603344bba/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 11:28:27,185 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c04a0f81-8b6c-4bc8-9c3a-7f4603344bba/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 (30)] Waiting until timeout for monitored process [2022-11-16 11:28:27,351 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-16 11:28:27,351 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 11:28:27,360 INFO L263 TraceCheckSpWp]: Trace formula consists of 165 conjuncts, 23 conjunts are in the unsatisfiable core [2022-11-16 11:28:27,363 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:28:27,380 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 8 treesize of output 7 [2022-11-16 11:28:28,657 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 44 proven. 43 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-11-16 11:28:28,658 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:28:33,246 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 0 proven. 93 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-16 11:28:33,246 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 11:28:33,246 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1007776496] [2022-11-16 11:28:33,246 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1007776496] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 11:28:33,246 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-16 11:28:33,246 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 14] total 25 [2022-11-16 11:28:33,247 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1679506670] [2022-11-16 11:28:33,247 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-16 11:28:33,247 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-11-16 11:28:33,247 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 11:28:33,248 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-11-16 11:28:33,248 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=514, Unknown=0, NotChecked=0, Total=600 [2022-11-16 11:28:33,249 INFO L87 Difference]: Start difference. First operand 245 states and 288 transitions. Second operand has 25 states, 25 states have (on average 4.12) internal successors, (103), 25 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:28:35,479 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:28:35,479 INFO L93 Difference]: Finished difference Result 308 states and 360 transitions. [2022-11-16 11:28:35,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-11-16 11:28:35,481 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 4.12) internal successors, (103), 25 states have internal predecessors, (103), 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 56 [2022-11-16 11:28:35,482 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:28:35,482 INFO L225 Difference]: With dead ends: 308 [2022-11-16 11:28:35,482 INFO L226 Difference]: Without dead ends: 305 [2022-11-16 11:28:35,483 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 88 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 129 ImplicationChecksByTransitivity, 4.1s TimeCoverageRelationStatistics Valid=118, Invalid=694, Unknown=0, NotChecked=0, Total=812 [2022-11-16 11:28:35,484 INFO L413 NwaCegarLoop]: 36 mSDtfsCounter, 68 mSDsluCounter, 450 mSDsCounter, 0 mSdLazyCounter, 238 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 68 SdHoareTripleChecker+Valid, 486 SdHoareTripleChecker+Invalid, 293 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 238 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 46 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-11-16 11:28:35,484 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [68 Valid, 486 Invalid, 293 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 238 Invalid, 0 Unknown, 46 Unchecked, 1.4s Time] [2022-11-16 11:28:35,485 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 305 states. [2022-11-16 11:28:35,490 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 305 to 281. [2022-11-16 11:28:35,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 281 states, 279 states have (on average 1.1971326164874552) internal successors, (334), 280 states have internal predecessors, (334), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:28:35,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 281 states to 281 states and 334 transitions. [2022-11-16 11:28:35,498 INFO L78 Accepts]: Start accepts. Automaton has 281 states and 334 transitions. Word has length 56 [2022-11-16 11:28:35,498 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:28:35,498 INFO L495 AbstractCegarLoop]: Abstraction has 281 states and 334 transitions. [2022-11-16 11:28:35,498 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 4.12) internal successors, (103), 25 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:28:35,499 INFO L276 IsEmpty]: Start isEmpty. Operand 281 states and 334 transitions. [2022-11-16 11:28:35,500 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2022-11-16 11:28:35,500 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:28:35,500 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:28:35,512 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c04a0f81-8b6c-4bc8-9c3a-7f4603344bba/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 (30)] Ended with exit code 0 [2022-11-16 11:28:35,700 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c04a0f81-8b6c-4bc8-9c3a-7f4603344bba/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 11:28:35,701 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2022-11-16 11:28:35,701 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:28:35,701 INFO L85 PathProgramCache]: Analyzing trace with hash -2122007768, now seen corresponding path program 2 times [2022-11-16 11:28:35,701 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 11:28:35,702 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1504285191] [2022-11-16 11:28:35,702 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-16 11:28:35,702 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 11:28:35,702 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c04a0f81-8b6c-4bc8-9c3a-7f4603344bba/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 11:28:35,703 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c04a0f81-8b6c-4bc8-9c3a-7f4603344bba/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 11:28:35,713 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c04a0f81-8b6c-4bc8-9c3a-7f4603344bba/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 11:28:35,873 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-16 11:28:35,873 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 11:28:35,882 INFO L263 TraceCheckSpWp]: Trace formula consists of 165 conjuncts, 23 conjunts are in the unsatisfiable core [2022-11-16 11:28:35,884 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:28:35,907 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 8 treesize of output 7 [2022-11-16 11:28:37,026 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 44 proven. 44 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-11-16 11:28:37,026 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:28:41,485 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 0 proven. 94 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-16 11:28:41,485 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 11:28:41,486 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1504285191] [2022-11-16 11:28:41,486 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1504285191] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 11:28:41,486 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-16 11:28:41,486 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 14] total 25 [2022-11-16 11:28:41,486 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [456836468] [2022-11-16 11:28:41,486 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-16 11:28:41,487 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-11-16 11:28:41,487 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 11:28:41,487 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-11-16 11:28:41,488 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=514, Unknown=0, NotChecked=0, Total=600 [2022-11-16 11:28:41,488 INFO L87 Difference]: Start difference. First operand 281 states and 334 transitions. Second operand has 25 states, 25 states have (on average 4.12) internal successors, (103), 25 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:28:43,679 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:28:43,680 INFO L93 Difference]: Finished difference Result 348 states and 410 transitions. [2022-11-16 11:28:43,682 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-11-16 11:28:43,682 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 4.12) internal successors, (103), 25 states have internal predecessors, (103), 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 56 [2022-11-16 11:28:43,682 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:28:43,683 INFO L225 Difference]: With dead ends: 348 [2022-11-16 11:28:43,683 INFO L226 Difference]: Without dead ends: 345 [2022-11-16 11:28:43,684 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 87 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 129 ImplicationChecksByTransitivity, 4.0s TimeCoverageRelationStatistics Valid=118, Invalid=694, Unknown=0, NotChecked=0, Total=812 [2022-11-16 11:28:43,685 INFO L413 NwaCegarLoop]: 36 mSDtfsCounter, 62 mSDsluCounter, 510 mSDsCounter, 0 mSdLazyCounter, 252 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 62 SdHoareTripleChecker+Valid, 546 SdHoareTripleChecker+Invalid, 320 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 252 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 59 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-11-16 11:28:43,686 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [62 Valid, 546 Invalid, 320 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 252 Invalid, 0 Unknown, 59 Unchecked, 1.4s Time] [2022-11-16 11:28:43,687 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 345 states. [2022-11-16 11:28:43,692 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 345 to 303. [2022-11-16 11:28:43,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 303 states, 301 states have (on average 1.1926910299003322) internal successors, (359), 302 states have internal predecessors, (359), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:28:43,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 303 states to 303 states and 359 transitions. [2022-11-16 11:28:43,694 INFO L78 Accepts]: Start accepts. Automaton has 303 states and 359 transitions. Word has length 56 [2022-11-16 11:28:43,695 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:28:43,695 INFO L495 AbstractCegarLoop]: Abstraction has 303 states and 359 transitions. [2022-11-16 11:28:43,695 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 4.12) internal successors, (103), 25 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:28:43,695 INFO L276 IsEmpty]: Start isEmpty. Operand 303 states and 359 transitions. [2022-11-16 11:28:43,696 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2022-11-16 11:28:43,697 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:28:43,697 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:28:43,711 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c04a0f81-8b6c-4bc8-9c3a-7f4603344bba/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)] Ended with exit code 0 [2022-11-16 11:28:43,910 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c04a0f81-8b6c-4bc8-9c3a-7f4603344bba/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 11:28:43,910 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2022-11-16 11:28:43,911 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:28:43,911 INFO L85 PathProgramCache]: Analyzing trace with hash 1316142120, now seen corresponding path program 3 times [2022-11-16 11:28:43,911 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 11:28:43,911 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1874063439] [2022-11-16 11:28:43,911 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-16 11:28:43,911 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 11:28:43,912 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c04a0f81-8b6c-4bc8-9c3a-7f4603344bba/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 11:28:43,913 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c04a0f81-8b6c-4bc8-9c3a-7f4603344bba/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 11:28:43,914 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c04a0f81-8b6c-4bc8-9c3a-7f4603344bba/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)] Waiting until timeout for monitored process [2022-11-16 11:28:44,186 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2022-11-16 11:28:44,187 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 11:28:44,197 INFO L263 TraceCheckSpWp]: Trace formula consists of 151 conjuncts, 24 conjunts are in the unsatisfiable core [2022-11-16 11:28:44,199 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:28:44,218 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 8 treesize of output 7 [2022-11-16 11:28:47,466 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 69 proven. 19 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-11-16 11:28:47,466 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:28:54,454 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 33 proven. 55 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-11-16 11:28:54,454 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 11:28:54,454 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1874063439] [2022-11-16 11:28:54,454 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1874063439] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 11:28:54,454 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-16 11:28:54,454 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 28 [2022-11-16 11:28:54,455 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [676263919] [2022-11-16 11:28:54,455 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-16 11:28:54,455 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-11-16 11:28:54,455 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 11:28:54,456 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-11-16 11:28:54,456 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=137, Invalid=619, Unknown=0, NotChecked=0, Total=756 [2022-11-16 11:28:54,457 INFO L87 Difference]: Start difference. First operand 303 states and 359 transitions. Second operand has 28 states, 28 states have (on average 3.5) internal successors, (98), 28 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:28:54,727 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:28:54,728 INFO L93 Difference]: Finished difference Result 423 states and 502 transitions. [2022-11-16 11:28:54,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-16 11:28:54,729 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 3.5) internal successors, (98), 28 states have internal predecessors, (98), 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 56 [2022-11-16 11:28:54,729 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:28:54,730 INFO L225 Difference]: With dead ends: 423 [2022-11-16 11:28:54,731 INFO L226 Difference]: Without dead ends: 417 [2022-11-16 11:28:54,731 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 84 SyntacticMatches, 1 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 255 ImplicationChecksByTransitivity, 5.1s TimeCoverageRelationStatistics Valid=148, Invalid=664, Unknown=0, NotChecked=0, Total=812 [2022-11-16 11:28:54,732 INFO L413 NwaCegarLoop]: 27 mSDtfsCounter, 75 mSDsluCounter, 205 mSDsCounter, 0 mSdLazyCounter, 65 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 75 SdHoareTripleChecker+Valid, 232 SdHoareTripleChecker+Invalid, 171 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 65 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 106 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-16 11:28:54,733 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [75 Valid, 232 Invalid, 171 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 65 Invalid, 0 Unknown, 106 Unchecked, 0.2s Time] [2022-11-16 11:28:54,734 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 417 states. [2022-11-16 11:28:54,740 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 417 to 372. [2022-11-16 11:28:54,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 372 states, 370 states have (on average 1.2027027027027026) internal successors, (445), 371 states have internal predecessors, (445), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:28:54,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 372 states to 372 states and 445 transitions. [2022-11-16 11:28:54,743 INFO L78 Accepts]: Start accepts. Automaton has 372 states and 445 transitions. Word has length 56 [2022-11-16 11:28:54,743 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:28:54,743 INFO L495 AbstractCegarLoop]: Abstraction has 372 states and 445 transitions. [2022-11-16 11:28:54,743 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 3.5) internal successors, (98), 28 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:28:54,744 INFO L276 IsEmpty]: Start isEmpty. Operand 372 states and 445 transitions. [2022-11-16 11:28:54,745 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2022-11-16 11:28:54,745 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:28:54,745 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:28:54,761 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c04a0f81-8b6c-4bc8-9c3a-7f4603344bba/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)] Ended with exit code 0 [2022-11-16 11:28:54,961 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c04a0f81-8b6c-4bc8-9c3a-7f4603344bba/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 11:28:54,961 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2022-11-16 11:28:54,962 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:28:54,962 INFO L85 PathProgramCache]: Analyzing trace with hash 30090216, now seen corresponding path program 3 times [2022-11-16 11:28:54,962 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 11:28:54,962 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2030533436] [2022-11-16 11:28:54,962 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-16 11:28:54,963 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 11:28:54,963 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c04a0f81-8b6c-4bc8-9c3a-7f4603344bba/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 11:28:54,964 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c04a0f81-8b6c-4bc8-9c3a-7f4603344bba/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 11:28:55,004 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c04a0f81-8b6c-4bc8-9c3a-7f4603344bba/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 11:28:55,423 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2022-11-16 11:28:55,423 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 11:28:55,435 INFO L263 TraceCheckSpWp]: Trace formula consists of 151 conjuncts, 24 conjunts are in the unsatisfiable core [2022-11-16 11:28:55,437 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:28:55,459 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 8 treesize of output 7 [2022-11-16 11:28:58,840 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 69 proven. 19 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-11-16 11:28:58,840 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:29:05,723 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 33 proven. 55 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-11-16 11:29:05,723 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 11:29:05,724 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2030533436] [2022-11-16 11:29:05,724 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2030533436] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 11:29:05,724 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-16 11:29:05,724 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 28 [2022-11-16 11:29:05,724 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1950631385] [2022-11-16 11:29:05,725 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-16 11:29:05,725 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-11-16 11:29:05,725 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 11:29:05,726 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-11-16 11:29:05,726 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=137, Invalid=619, Unknown=0, NotChecked=0, Total=756 [2022-11-16 11:29:05,727 INFO L87 Difference]: Start difference. First operand 372 states and 445 transitions. Second operand has 28 states, 28 states have (on average 3.5) internal successors, (98), 28 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:29:06,353 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:29:06,353 INFO L93 Difference]: Finished difference Result 487 states and 573 transitions. [2022-11-16 11:29:06,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-11-16 11:29:06,356 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 3.5) internal successors, (98), 28 states have internal predecessors, (98), 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 56 [2022-11-16 11:29:06,356 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:29:06,357 INFO L225 Difference]: With dead ends: 487 [2022-11-16 11:29:06,357 INFO L226 Difference]: Without dead ends: 481 [2022-11-16 11:29:06,357 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 84 SyntacticMatches, 1 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 255 ImplicationChecksByTransitivity, 5.0s TimeCoverageRelationStatistics Valid=148, Invalid=664, Unknown=0, NotChecked=0, Total=812 [2022-11-16 11:29:06,358 INFO L413 NwaCegarLoop]: 27 mSDtfsCounter, 87 mSDsluCounter, 226 mSDsCounter, 0 mSdLazyCounter, 112 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 87 SdHoareTripleChecker+Valid, 253 SdHoareTripleChecker+Invalid, 266 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 112 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 153 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-16 11:29:06,359 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [87 Valid, 253 Invalid, 266 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 112 Invalid, 0 Unknown, 153 Unchecked, 0.5s Time] [2022-11-16 11:29:06,360 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 481 states. [2022-11-16 11:29:06,366 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 481 to 428. [2022-11-16 11:29:06,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 428 states, 426 states have (on average 1.199530516431925) internal successors, (511), 427 states have internal predecessors, (511), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:29:06,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 428 states to 428 states and 511 transitions. [2022-11-16 11:29:06,370 INFO L78 Accepts]: Start accepts. Automaton has 428 states and 511 transitions. Word has length 56 [2022-11-16 11:29:06,370 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:29:06,370 INFO L495 AbstractCegarLoop]: Abstraction has 428 states and 511 transitions. [2022-11-16 11:29:06,370 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 3.5) internal successors, (98), 28 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:29:06,371 INFO L276 IsEmpty]: Start isEmpty. Operand 428 states and 511 transitions. [2022-11-16 11:29:06,372 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-11-16 11:29:06,372 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:29:06,373 INFO L195 NwaCegarLoop]: trace histogram [7, 6, 5, 5, 5, 5, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:29:06,396 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c04a0f81-8b6c-4bc8-9c3a-7f4603344bba/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 11:29:06,586 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c04a0f81-8b6c-4bc8-9c3a-7f4603344bba/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 11:29:06,586 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2022-11-16 11:29:06,587 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:29:06,587 INFO L85 PathProgramCache]: Analyzing trace with hash -1169143877, now seen corresponding path program 4 times [2022-11-16 11:29:06,587 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 11:29:06,587 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [566098686] [2022-11-16 11:29:06,587 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-16 11:29:06,587 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 11:29:06,588 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c04a0f81-8b6c-4bc8-9c3a-7f4603344bba/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 11:29:06,589 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c04a0f81-8b6c-4bc8-9c3a-7f4603344bba/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 11:29:06,594 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c04a0f81-8b6c-4bc8-9c3a-7f4603344bba/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 (34)] Waiting until timeout for monitored process [2022-11-16 11:29:06,781 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-16 11:29:06,782 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 11:29:06,790 INFO L263 TraceCheckSpWp]: Trace formula consists of 188 conjuncts, 23 conjunts are in the unsatisfiable core [2022-11-16 11:29:06,792 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:29:06,818 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 8 treesize of output 7 [2022-11-16 11:29:08,443 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 42 proven. 61 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-11-16 11:29:08,443 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:29:13,753 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 0 proven. 107 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-16 11:29:13,753 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 11:29:13,753 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [566098686] [2022-11-16 11:29:13,753 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [566098686] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 11:29:13,753 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-16 11:29:13,754 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 14] total 25 [2022-11-16 11:29:13,754 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1060814446] [2022-11-16 11:29:13,754 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-16 11:29:13,755 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-11-16 11:29:13,755 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 11:29:13,756 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-11-16 11:29:13,756 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=514, Unknown=0, NotChecked=0, Total=600 [2022-11-16 11:29:13,756 INFO L87 Difference]: Start difference. First operand 428 states and 511 transitions. Second operand has 25 states, 25 states have (on average 4.6) internal successors, (115), 25 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:29:15,283 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:29:15,284 INFO L93 Difference]: Finished difference Result 459 states and 544 transitions. [2022-11-16 11:29:15,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-11-16 11:29:15,286 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 4.6) internal successors, (115), 25 states have internal predecessors, (115), 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 62 [2022-11-16 11:29:15,286 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:29:15,287 INFO L225 Difference]: With dead ends: 459 [2022-11-16 11:29:15,287 INFO L226 Difference]: Without dead ends: 458 [2022-11-16 11:29:15,288 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 128 GetRequests, 101 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 129 ImplicationChecksByTransitivity, 4.2s TimeCoverageRelationStatistics Valid=120, Invalid=692, Unknown=0, NotChecked=0, Total=812 [2022-11-16 11:29:15,288 INFO L413 NwaCegarLoop]: 32 mSDtfsCounter, 58 mSDsluCounter, 401 mSDsCounter, 0 mSdLazyCounter, 201 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 433 SdHoareTripleChecker+Invalid, 299 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 201 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 89 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-11-16 11:29:15,288 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [58 Valid, 433 Invalid, 299 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 201 Invalid, 0 Unknown, 89 Unchecked, 1.0s Time] [2022-11-16 11:29:15,289 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 458 states. [2022-11-16 11:29:15,293 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 458 to 444. [2022-11-16 11:29:15,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 444 states, 442 states have (on average 1.1968325791855203) internal successors, (529), 443 states have internal predecessors, (529), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:29:15,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 444 states to 444 states and 529 transitions. [2022-11-16 11:29:15,295 INFO L78 Accepts]: Start accepts. Automaton has 444 states and 529 transitions. Word has length 62 [2022-11-16 11:29:15,296 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:29:15,296 INFO L495 AbstractCegarLoop]: Abstraction has 444 states and 529 transitions. [2022-11-16 11:29:15,296 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 4.6) internal successors, (115), 25 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:29:15,296 INFO L276 IsEmpty]: Start isEmpty. Operand 444 states and 529 transitions. [2022-11-16 11:29:15,297 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-11-16 11:29:15,298 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:29:15,298 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 5, 5, 5, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:29:15,311 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c04a0f81-8b6c-4bc8-9c3a-7f4603344bba/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 (34)] Forceful destruction successful, exit code 0 [2022-11-16 11:29:15,510 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c04a0f81-8b6c-4bc8-9c3a-7f4603344bba/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 11:29:15,510 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2022-11-16 11:29:15,511 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:29:15,511 INFO L85 PathProgramCache]: Analyzing trace with hash 523652987, now seen corresponding path program 1 times [2022-11-16 11:29:15,511 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 11:29:15,511 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [28235654] [2022-11-16 11:29:15,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:29:15,511 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 11:29:15,511 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c04a0f81-8b6c-4bc8-9c3a-7f4603344bba/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 11:29:15,512 INFO L229 MonitoredProcess]: Starting monitored process 35 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c04a0f81-8b6c-4bc8-9c3a-7f4603344bba/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 11:29:15,513 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c04a0f81-8b6c-4bc8-9c3a-7f4603344bba/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 11:29:15,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:29:15,649 INFO L263 TraceCheckSpWp]: Trace formula consists of 188 conjuncts, 23 conjunts are in the unsatisfiable core [2022-11-16 11:29:15,651 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:29:15,665 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 8 treesize of output 7 [2022-11-16 11:29:16,806 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 42 proven. 56 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-11-16 11:29:16,806 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:29:20,674 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 0 proven. 102 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-16 11:29:20,674 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 11:29:20,674 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [28235654] [2022-11-16 11:29:20,674 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [28235654] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 11:29:20,675 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-16 11:29:20,675 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 14] total 25 [2022-11-16 11:29:20,675 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1095887728] [2022-11-16 11:29:20,675 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-16 11:29:20,676 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-11-16 11:29:20,676 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 11:29:20,676 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-11-16 11:29:20,676 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=514, Unknown=0, NotChecked=0, Total=600 [2022-11-16 11:29:20,677 INFO L87 Difference]: Start difference. First operand 444 states and 529 transitions. Second operand has 25 states, 25 states have (on average 4.6) internal successors, (115), 25 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:29:22,622 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:29:22,622 INFO L93 Difference]: Finished difference Result 499 states and 590 transitions. [2022-11-16 11:29:22,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-11-16 11:29:22,624 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 4.6) internal successors, (115), 25 states have internal predecessors, (115), 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 62 [2022-11-16 11:29:22,624 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:29:22,626 INFO L225 Difference]: With dead ends: 499 [2022-11-16 11:29:22,626 INFO L226 Difference]: Without dead ends: 498 [2022-11-16 11:29:22,627 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 129 GetRequests, 101 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 140 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=121, Invalid=749, Unknown=0, NotChecked=0, Total=870 [2022-11-16 11:29:22,627 INFO L413 NwaCegarLoop]: 39 mSDtfsCounter, 86 mSDsluCounter, 410 mSDsCounter, 0 mSdLazyCounter, 235 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 86 SdHoareTripleChecker+Valid, 449 SdHoareTripleChecker+Invalid, 261 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 235 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 18 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-11-16 11:29:22,627 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [86 Valid, 449 Invalid, 261 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 235 Invalid, 0 Unknown, 18 Unchecked, 1.2s Time] [2022-11-16 11:29:22,628 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 498 states. [2022-11-16 11:29:22,638 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 498 to 472. [2022-11-16 11:29:22,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 472 states, 470 states have (on average 1.2) internal successors, (564), 471 states have internal predecessors, (564), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:29:22,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 472 states to 472 states and 564 transitions. [2022-11-16 11:29:22,640 INFO L78 Accepts]: Start accepts. Automaton has 472 states and 564 transitions. Word has length 62 [2022-11-16 11:29:22,640 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:29:22,640 INFO L495 AbstractCegarLoop]: Abstraction has 472 states and 564 transitions. [2022-11-16 11:29:22,641 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 4.6) internal successors, (115), 25 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:29:22,641 INFO L276 IsEmpty]: Start isEmpty. Operand 472 states and 564 transitions. [2022-11-16 11:29:22,642 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-11-16 11:29:22,642 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:29:22,642 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 5, 5, 5, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:29:22,653 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c04a0f81-8b6c-4bc8-9c3a-7f4603344bba/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)] Ended with exit code 0 [2022-11-16 11:29:22,846 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c04a0f81-8b6c-4bc8-9c3a-7f4603344bba/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 11:29:22,846 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2022-11-16 11:29:22,847 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:29:22,847 INFO L85 PathProgramCache]: Analyzing trace with hash 1839771515, now seen corresponding path program 2 times [2022-11-16 11:29:22,847 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 11:29:22,847 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2062791492] [2022-11-16 11:29:22,847 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-16 11:29:22,847 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 11:29:22,847 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c04a0f81-8b6c-4bc8-9c3a-7f4603344bba/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 11:29:22,848 INFO L229 MonitoredProcess]: Starting monitored process 36 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c04a0f81-8b6c-4bc8-9c3a-7f4603344bba/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 11:29:22,850 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c04a0f81-8b6c-4bc8-9c3a-7f4603344bba/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 (36)] Waiting until timeout for monitored process [2022-11-16 11:29:22,977 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-16 11:29:22,977 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 11:29:22,984 INFO L263 TraceCheckSpWp]: Trace formula consists of 188 conjuncts, 23 conjunts are in the unsatisfiable core [2022-11-16 11:29:22,986 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:29:23,001 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 8 treesize of output 7 [2022-11-16 11:29:24,145 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 42 proven. 56 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-11-16 11:29:24,145 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:29:28,050 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 0 proven. 102 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-16 11:29:28,050 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 11:29:28,050 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2062791492] [2022-11-16 11:29:28,050 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2062791492] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 11:29:28,051 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-16 11:29:28,051 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 14] total 25 [2022-11-16 11:29:28,051 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [74769271] [2022-11-16 11:29:28,051 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-16 11:29:28,052 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-11-16 11:29:28,052 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 11:29:28,052 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-11-16 11:29:28,053 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=514, Unknown=0, NotChecked=0, Total=600 [2022-11-16 11:29:28,053 INFO L87 Difference]: Start difference. First operand 472 states and 564 transitions. Second operand has 25 states, 25 states have (on average 4.6) internal successors, (115), 25 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:29:30,222 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:29:30,223 INFO L93 Difference]: Finished difference Result 578 states and 685 transitions. [2022-11-16 11:29:30,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-11-16 11:29:30,224 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 4.6) internal successors, (115), 25 states have internal predecessors, (115), 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 62 [2022-11-16 11:29:30,229 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:29:30,230 INFO L225 Difference]: With dead ends: 578 [2022-11-16 11:29:30,230 INFO L226 Difference]: Without dead ends: 577 [2022-11-16 11:29:30,230 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 129 GetRequests, 100 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 145 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=131, Invalid=799, Unknown=0, NotChecked=0, Total=930 [2022-11-16 11:29:30,230 INFO L413 NwaCegarLoop]: 37 mSDtfsCounter, 98 mSDsluCounter, 468 mSDsCounter, 0 mSdLazyCounter, 231 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 98 SdHoareTripleChecker+Valid, 505 SdHoareTripleChecker+Invalid, 281 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 231 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 41 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-11-16 11:29:30,231 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [98 Valid, 505 Invalid, 281 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 231 Invalid, 0 Unknown, 41 Unchecked, 1.2s Time] [2022-11-16 11:29:30,231 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 577 states. [2022-11-16 11:29:30,240 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 577 to 529. [2022-11-16 11:29:30,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 529 states, 527 states have (on average 1.1973434535104364) internal successors, (631), 528 states have internal predecessors, (631), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:29:30,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 529 states to 529 states and 631 transitions. [2022-11-16 11:29:30,243 INFO L78 Accepts]: Start accepts. Automaton has 529 states and 631 transitions. Word has length 62 [2022-11-16 11:29:30,243 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:29:30,243 INFO L495 AbstractCegarLoop]: Abstraction has 529 states and 631 transitions. [2022-11-16 11:29:30,243 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 4.6) internal successors, (115), 25 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:29:30,244 INFO L276 IsEmpty]: Start isEmpty. Operand 529 states and 631 transitions. [2022-11-16 11:29:30,245 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-11-16 11:29:30,245 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:29:30,245 INFO L195 NwaCegarLoop]: trace histogram [7, 6, 5, 5, 5, 5, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:29:30,263 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c04a0f81-8b6c-4bc8-9c3a-7f4603344bba/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 (36)] Forceful destruction successful, exit code 0 [2022-11-16 11:29:30,457 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c04a0f81-8b6c-4bc8-9c3a-7f4603344bba/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 11:29:30,457 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2022-11-16 11:29:30,458 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:29:30,458 INFO L85 PathProgramCache]: Analyzing trace with hash -762398917, now seen corresponding path program 4 times [2022-11-16 11:29:30,458 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 11:29:30,458 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1612562988] [2022-11-16 11:29:30,458 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-16 11:29:30,458 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 11:29:30,458 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c04a0f81-8b6c-4bc8-9c3a-7f4603344bba/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 11:29:30,459 INFO L229 MonitoredProcess]: Starting monitored process 37 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c04a0f81-8b6c-4bc8-9c3a-7f4603344bba/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 11:29:30,460 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c04a0f81-8b6c-4bc8-9c3a-7f4603344bba/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 11:29:30,587 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-16 11:29:30,587 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 11:29:30,594 INFO L263 TraceCheckSpWp]: Trace formula consists of 188 conjuncts, 23 conjunts are in the unsatisfiable core [2022-11-16 11:29:30,596 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:29:30,614 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 8 treesize of output 7 [2022-11-16 11:29:31,697 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 42 proven. 63 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-11-16 11:29:31,697 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:29:35,562 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 0 proven. 109 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-16 11:29:35,562 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 11:29:35,562 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1612562988] [2022-11-16 11:29:35,562 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1612562988] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 11:29:35,562 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-16 11:29:35,563 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 14] total 25 [2022-11-16 11:29:35,563 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [26413532] [2022-11-16 11:29:35,563 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-16 11:29:35,563 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-11-16 11:29:35,564 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 11:29:35,564 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-11-16 11:29:35,564 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=514, Unknown=0, NotChecked=0, Total=600 [2022-11-16 11:29:35,565 INFO L87 Difference]: Start difference. First operand 529 states and 631 transitions. Second operand has 25 states, 25 states have (on average 4.6) internal successors, (115), 25 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:29:39,448 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:29:39,448 INFO L93 Difference]: Finished difference Result 594 states and 701 transitions. [2022-11-16 11:29:39,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-11-16 11:29:39,450 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 4.6) internal successors, (115), 25 states have internal predecessors, (115), 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 62 [2022-11-16 11:29:39,450 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:29:39,451 INFO L225 Difference]: With dead ends: 594 [2022-11-16 11:29:39,451 INFO L226 Difference]: Without dead ends: 587 [2022-11-16 11:29:39,451 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 137 GetRequests, 101 SyntacticMatches, 2 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 231 ImplicationChecksByTransitivity, 5.4s TimeCoverageRelationStatistics Valid=160, Invalid=1100, Unknown=0, NotChecked=0, Total=1260 [2022-11-16 11:29:39,452 INFO L413 NwaCegarLoop]: 38 mSDtfsCounter, 86 mSDsluCounter, 447 mSDsCounter, 0 mSdLazyCounter, 227 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 86 SdHoareTripleChecker+Valid, 485 SdHoareTripleChecker+Invalid, 285 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 227 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 49 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-11-16 11:29:39,452 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [86 Valid, 485 Invalid, 285 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 227 Invalid, 0 Unknown, 49 Unchecked, 1.2s Time] [2022-11-16 11:29:39,453 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 587 states. [2022-11-16 11:29:39,459 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 587 to 553. [2022-11-16 11:29:39,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 553 states, 551 states have (on average 1.1978221415607986) internal successors, (660), 552 states have internal predecessors, (660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:29:39,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 553 states to 553 states and 660 transitions. [2022-11-16 11:29:39,461 INFO L78 Accepts]: Start accepts. Automaton has 553 states and 660 transitions. Word has length 62 [2022-11-16 11:29:39,462 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:29:39,462 INFO L495 AbstractCegarLoop]: Abstraction has 553 states and 660 transitions. [2022-11-16 11:29:39,462 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 4.6) internal successors, (115), 25 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:29:39,462 INFO L276 IsEmpty]: Start isEmpty. Operand 553 states and 660 transitions. [2022-11-16 11:29:39,463 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-11-16 11:29:39,464 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:29:39,464 INFO L195 NwaCegarLoop]: trace histogram [7, 6, 5, 5, 5, 5, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:29:39,476 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c04a0f81-8b6c-4bc8-9c3a-7f4603344bba/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 11:29:39,676 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 37 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c04a0f81-8b6c-4bc8-9c3a-7f4603344bba/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 11:29:39,676 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2022-11-16 11:29:39,677 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:29:39,677 INFO L85 PathProgramCache]: Analyzing trace with hash 911339643, now seen corresponding path program 5 times [2022-11-16 11:29:39,677 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 11:29:39,677 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [98843483] [2022-11-16 11:29:39,677 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-11-16 11:29:39,677 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 11:29:39,678 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c04a0f81-8b6c-4bc8-9c3a-7f4603344bba/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 11:29:39,678 INFO L229 MonitoredProcess]: Starting monitored process 38 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c04a0f81-8b6c-4bc8-9c3a-7f4603344bba/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 11:29:39,680 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c04a0f81-8b6c-4bc8-9c3a-7f4603344bba/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 (38)] Waiting until timeout for monitored process [2022-11-16 11:29:39,888 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 8 check-sat command(s) [2022-11-16 11:29:39,888 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 11:29:39,895 INFO L263 TraceCheckSpWp]: Trace formula consists of 188 conjuncts, 26 conjunts are in the unsatisfiable core [2022-11-16 11:29:39,898 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:29:39,915 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 8 treesize of output 7 [2022-11-16 11:29:41,119 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 42 proven. 61 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-11-16 11:29:41,119 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:29:45,088 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 0 proven. 107 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-16 11:29:45,089 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 11:29:45,089 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [98843483] [2022-11-16 11:29:45,089 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [98843483] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 11:29:45,089 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-16 11:29:45,089 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 14] total 26 [2022-11-16 11:29:45,089 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1346888031] [2022-11-16 11:29:45,089 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-16 11:29:45,090 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-11-16 11:29:45,090 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 11:29:45,090 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-11-16 11:29:45,091 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=558, Unknown=0, NotChecked=0, Total=650 [2022-11-16 11:29:45,091 INFO L87 Difference]: Start difference. First operand 553 states and 660 transitions. Second operand has 26 states, 26 states have (on average 4.423076923076923) internal successors, (115), 26 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:29:46,477 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:29:46,477 INFO L93 Difference]: Finished difference Result 602 states and 714 transitions. [2022-11-16 11:29:46,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-11-16 11:29:46,478 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 4.423076923076923) internal successors, (115), 26 states have internal predecessors, (115), 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 62 [2022-11-16 11:29:46,478 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:29:46,479 INFO L225 Difference]: With dead ends: 602 [2022-11-16 11:29:46,479 INFO L226 Difference]: Without dead ends: 598 [2022-11-16 11:29:46,479 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 98 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 141 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=145, Invalid=725, Unknown=0, NotChecked=0, Total=870 [2022-11-16 11:29:46,480 INFO L413 NwaCegarLoop]: 35 mSDtfsCounter, 86 mSDsluCounter, 558 mSDsCounter, 0 mSdLazyCounter, 258 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 86 SdHoareTripleChecker+Valid, 593 SdHoareTripleChecker+Invalid, 349 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 258 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 82 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-11-16 11:29:46,480 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [86 Valid, 593 Invalid, 349 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 258 Invalid, 0 Unknown, 82 Unchecked, 0.9s Time] [2022-11-16 11:29:46,480 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 598 states. [2022-11-16 11:29:46,486 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 598 to 581. [2022-11-16 11:29:46,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 581 states, 579 states have (on average 1.1986183074265975) internal successors, (694), 580 states have internal predecessors, (694), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:29:46,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 581 states to 581 states and 694 transitions. [2022-11-16 11:29:46,488 INFO L78 Accepts]: Start accepts. Automaton has 581 states and 694 transitions. Word has length 62 [2022-11-16 11:29:46,488 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:29:46,488 INFO L495 AbstractCegarLoop]: Abstraction has 581 states and 694 transitions. [2022-11-16 11:29:46,489 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 4.423076923076923) internal successors, (115), 26 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:29:46,489 INFO L276 IsEmpty]: Start isEmpty. Operand 581 states and 694 transitions. [2022-11-16 11:29:46,490 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-11-16 11:29:46,490 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:29:46,490 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 5, 5, 5, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:29:46,502 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c04a0f81-8b6c-4bc8-9c3a-7f4603344bba/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 (38)] Forceful destruction successful, exit code 0 [2022-11-16 11:29:46,702 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c04a0f81-8b6c-4bc8-9c3a-7f4603344bba/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 11:29:46,702 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2022-11-16 11:29:46,702 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:29:46,702 INFO L85 PathProgramCache]: Analyzing trace with hash -1690830789, now seen corresponding path program 3 times [2022-11-16 11:29:46,703 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 11:29:46,703 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1934407096] [2022-11-16 11:29:46,703 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-16 11:29:46,703 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 11:29:46,703 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c04a0f81-8b6c-4bc8-9c3a-7f4603344bba/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 11:29:46,704 INFO L229 MonitoredProcess]: Starting monitored process 39 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c04a0f81-8b6c-4bc8-9c3a-7f4603344bba/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 11:29:46,706 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c04a0f81-8b6c-4bc8-9c3a-7f4603344bba/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 11:29:46,912 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2022-11-16 11:29:46,912 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 11:29:46,919 INFO L263 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 24 conjunts are in the unsatisfiable core [2022-11-16 11:29:46,922 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:29:46,933 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 8 treesize of output 7 [2022-11-16 11:29:49,461 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 78 proven. 21 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-11-16 11:29:49,461 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:29:54,431 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 38 proven. 61 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-11-16 11:29:54,431 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 11:29:54,431 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1934407096] [2022-11-16 11:29:54,431 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1934407096] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 11:29:54,431 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-16 11:29:54,431 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 28 [2022-11-16 11:29:54,431 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [353464787] [2022-11-16 11:29:54,432 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-16 11:29:54,432 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-11-16 11:29:54,432 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 11:29:54,432 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-11-16 11:29:54,433 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=137, Invalid=619, Unknown=0, NotChecked=0, Total=756 [2022-11-16 11:29:54,433 INFO L87 Difference]: Start difference. First operand 581 states and 694 transitions. Second operand has 28 states, 28 states have (on average 3.9285714285714284) internal successors, (110), 28 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:29:55,646 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:29:55,646 INFO L93 Difference]: Finished difference Result 780 states and 924 transitions. [2022-11-16 11:29:55,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-11-16 11:29:55,646 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 3.9285714285714284) internal successors, (110), 28 states have internal predecessors, (110), 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 62 [2022-11-16 11:29:55,646 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:29:55,648 INFO L225 Difference]: With dead ends: 780 [2022-11-16 11:29:55,648 INFO L226 Difference]: Without dead ends: 773 [2022-11-16 11:29:55,648 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 135 GetRequests, 103 SyntacticMatches, 1 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 306 ImplicationChecksByTransitivity, 4.2s TimeCoverageRelationStatistics Valid=196, Invalid=860, Unknown=0, NotChecked=0, Total=1056 [2022-11-16 11:29:55,648 INFO L413 NwaCegarLoop]: 33 mSDtfsCounter, 83 mSDsluCounter, 394 mSDsCounter, 0 mSdLazyCounter, 118 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 83 SdHoareTripleChecker+Valid, 427 SdHoareTripleChecker+Invalid, 328 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 118 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 209 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-16 11:29:55,649 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [83 Valid, 427 Invalid, 328 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 118 Invalid, 0 Unknown, 209 Unchecked, 0.4s Time] [2022-11-16 11:29:55,649 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 773 states. [2022-11-16 11:29:55,657 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 773 to 609. [2022-11-16 11:29:55,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 609 states, 607 states have (on average 1.2059308072487644) internal successors, (732), 608 states have internal predecessors, (732), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:29:55,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 609 states to 609 states and 732 transitions. [2022-11-16 11:29:55,659 INFO L78 Accepts]: Start accepts. Automaton has 609 states and 732 transitions. Word has length 62 [2022-11-16 11:29:55,659 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:29:55,659 INFO L495 AbstractCegarLoop]: Abstraction has 609 states and 732 transitions. [2022-11-16 11:29:55,660 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 3.9285714285714284) internal successors, (110), 28 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:29:55,660 INFO L276 IsEmpty]: Start isEmpty. Operand 609 states and 732 transitions. [2022-11-16 11:29:55,661 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-11-16 11:29:55,661 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:29:55,661 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 5, 5, 5, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:29:55,674 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c04a0f81-8b6c-4bc8-9c3a-7f4603344bba/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 [2022-11-16 11:29:55,874 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 39 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c04a0f81-8b6c-4bc8-9c3a-7f4603344bba/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 11:29:55,874 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2022-11-16 11:29:55,874 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:29:55,874 INFO L85 PathProgramCache]: Analyzing trace with hash 1445824571, now seen corresponding path program 4 times [2022-11-16 11:29:55,874 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 11:29:55,875 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2085384182] [2022-11-16 11:29:55,875 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-16 11:29:55,875 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 11:29:55,875 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c04a0f81-8b6c-4bc8-9c3a-7f4603344bba/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 11:29:55,876 INFO L229 MonitoredProcess]: Starting monitored process 40 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c04a0f81-8b6c-4bc8-9c3a-7f4603344bba/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 11:29:55,877 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c04a0f81-8b6c-4bc8-9c3a-7f4603344bba/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 (40)] Waiting until timeout for monitored process [2022-11-16 11:29:56,018 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-16 11:29:56,018 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 11:29:56,024 INFO L263 TraceCheckSpWp]: Trace formula consists of 188 conjuncts, 23 conjunts are in the unsatisfiable core [2022-11-16 11:29:56,027 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:29:56,044 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 8 treesize of output 7 [2022-11-16 11:29:57,094 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 42 proven. 56 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-11-16 11:29:57,094 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:30:00,888 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 0 proven. 102 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-16 11:30:00,889 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 11:30:00,889 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2085384182] [2022-11-16 11:30:00,889 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2085384182] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 11:30:00,889 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-16 11:30:00,889 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 14] total 25 [2022-11-16 11:30:00,889 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2094941349] [2022-11-16 11:30:00,889 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-16 11:30:00,890 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-11-16 11:30:00,890 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 11:30:00,890 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-11-16 11:30:00,891 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=514, Unknown=0, NotChecked=0, Total=600 [2022-11-16 11:30:00,891 INFO L87 Difference]: Start difference. First operand 609 states and 732 transitions. Second operand has 25 states, 25 states have (on average 4.6) internal successors, (115), 25 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:30:02,597 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:30:02,597 INFO L93 Difference]: Finished difference Result 726 states and 865 transitions. [2022-11-16 11:30:02,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-11-16 11:30:02,598 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 4.6) internal successors, (115), 25 states have internal predecessors, (115), 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 62 [2022-11-16 11:30:02,599 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:30:02,600 INFO L225 Difference]: With dead ends: 726 [2022-11-16 11:30:02,600 INFO L226 Difference]: Without dead ends: 725 [2022-11-16 11:30:02,600 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 127 GetRequests, 100 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 129 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=119, Invalid=693, Unknown=0, NotChecked=0, Total=812 [2022-11-16 11:30:02,600 INFO L413 NwaCegarLoop]: 34 mSDtfsCounter, 72 mSDsluCounter, 388 mSDsCounter, 0 mSdLazyCounter, 216 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 422 SdHoareTripleChecker+Invalid, 233 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 216 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 9 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-11-16 11:30:02,601 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [72 Valid, 422 Invalid, 233 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 216 Invalid, 0 Unknown, 9 Unchecked, 1.1s Time] [2022-11-16 11:30:02,601 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 725 states. [2022-11-16 11:30:02,607 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 725 to 684. [2022-11-16 11:30:02,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 684 states, 682 states have (on average 1.2111436950146628) internal successors, (826), 683 states have internal predecessors, (826), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:30:02,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 684 states to 684 states and 826 transitions. [2022-11-16 11:30:02,610 INFO L78 Accepts]: Start accepts. Automaton has 684 states and 826 transitions. Word has length 62 [2022-11-16 11:30:02,610 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:30:02,610 INFO L495 AbstractCegarLoop]: Abstraction has 684 states and 826 transitions. [2022-11-16 11:30:02,610 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 4.6) internal successors, (115), 25 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:30:02,611 INFO L276 IsEmpty]: Start isEmpty. Operand 684 states and 826 transitions. [2022-11-16 11:30:02,612 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-11-16 11:30:02,612 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:30:02,612 INFO L195 NwaCegarLoop]: trace histogram [7, 6, 5, 5, 5, 5, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:30:02,625 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c04a0f81-8b6c-4bc8-9c3a-7f4603344bba/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 (40)] Ended with exit code 0 [2022-11-16 11:30:02,825 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 40 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c04a0f81-8b6c-4bc8-9c3a-7f4603344bba/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 11:30:02,825 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2022-11-16 11:30:02,825 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:30:02,825 INFO L85 PathProgramCache]: Analyzing trace with hash -1156345861, now seen corresponding path program 5 times [2022-11-16 11:30:02,826 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 11:30:02,826 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [207649325] [2022-11-16 11:30:02,826 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-11-16 11:30:02,826 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 11:30:02,826 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c04a0f81-8b6c-4bc8-9c3a-7f4603344bba/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 11:30:02,827 INFO L229 MonitoredProcess]: Starting monitored process 41 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c04a0f81-8b6c-4bc8-9c3a-7f4603344bba/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 11:30:02,828 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c04a0f81-8b6c-4bc8-9c3a-7f4603344bba/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 (41)] Waiting until timeout for monitored process [2022-11-16 11:30:03,090 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) [2022-11-16 11:30:03,090 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 11:30:03,100 INFO L263 TraceCheckSpWp]: Trace formula consists of 188 conjuncts, 26 conjunts are in the unsatisfiable core [2022-11-16 11:30:03,102 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:30:03,119 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 8 treesize of output 7 [2022-11-16 11:30:04,220 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 42 proven. 63 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-11-16 11:30:04,220 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:30:08,227 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 0 proven. 109 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-16 11:30:08,227 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 11:30:08,227 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [207649325] [2022-11-16 11:30:08,227 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [207649325] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 11:30:08,227 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-16 11:30:08,228 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 14] total 26 [2022-11-16 11:30:08,228 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1859256057] [2022-11-16 11:30:08,228 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-16 11:30:08,228 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-11-16 11:30:08,228 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 11:30:08,229 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-11-16 11:30:08,229 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=558, Unknown=0, NotChecked=0, Total=650 [2022-11-16 11:30:08,229 INFO L87 Difference]: Start difference. First operand 684 states and 826 transitions. Second operand has 26 states, 26 states have (on average 4.423076923076923) internal successors, (115), 26 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:30:11,967 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:30:11,967 INFO L93 Difference]: Finished difference Result 767 states and 914 transitions. [2022-11-16 11:30:11,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-11-16 11:30:11,969 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 4.423076923076923) internal successors, (115), 26 states have internal predecessors, (115), 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 62 [2022-11-16 11:30:11,969 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:30:11,971 INFO L225 Difference]: With dead ends: 767 [2022-11-16 11:30:11,971 INFO L226 Difference]: Without dead ends: 760 [2022-11-16 11:30:11,971 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 100 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 208 ImplicationChecksByTransitivity, 5.1s TimeCoverageRelationStatistics Valid=179, Invalid=1081, Unknown=0, NotChecked=0, Total=1260 [2022-11-16 11:30:11,972 INFO L413 NwaCegarLoop]: 35 mSDtfsCounter, 98 mSDsluCounter, 507 mSDsCounter, 0 mSdLazyCounter, 304 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 98 SdHoareTripleChecker+Valid, 542 SdHoareTripleChecker+Invalid, 344 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 304 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 29 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-11-16 11:30:11,972 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [98 Valid, 542 Invalid, 344 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 304 Invalid, 0 Unknown, 29 Unchecked, 1.4s Time] [2022-11-16 11:30:11,973 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 760 states. [2022-11-16 11:30:11,980 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 760 to 725. [2022-11-16 11:30:11,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 725 states, 723 states have (on average 1.210235131396957) internal successors, (875), 724 states have internal predecessors, (875), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:30:11,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 725 states to 725 states and 875 transitions. [2022-11-16 11:30:11,983 INFO L78 Accepts]: Start accepts. Automaton has 725 states and 875 transitions. Word has length 62 [2022-11-16 11:30:11,983 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:30:11,983 INFO L495 AbstractCegarLoop]: Abstraction has 725 states and 875 transitions. [2022-11-16 11:30:11,983 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 4.423076923076923) internal successors, (115), 26 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:30:11,983 INFO L276 IsEmpty]: Start isEmpty. Operand 725 states and 875 transitions. [2022-11-16 11:30:11,985 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-11-16 11:30:11,985 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:30:11,985 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 5, 5, 5, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:30:11,998 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c04a0f81-8b6c-4bc8-9c3a-7f4603344bba/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 (41)] Forceful destruction successful, exit code 0 [2022-11-16 11:30:12,198 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 41 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c04a0f81-8b6c-4bc8-9c3a-7f4603344bba/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 11:30:12,198 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2022-11-16 11:30:12,198 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:30:12,198 INFO L85 PathProgramCache]: Analyzing trace with hash 1322668283, now seen corresponding path program 5 times [2022-11-16 11:30:12,199 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 11:30:12,199 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [946169871] [2022-11-16 11:30:12,199 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-11-16 11:30:12,199 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 11:30:12,199 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c04a0f81-8b6c-4bc8-9c3a-7f4603344bba/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 11:30:12,200 INFO L229 MonitoredProcess]: Starting monitored process 42 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c04a0f81-8b6c-4bc8-9c3a-7f4603344bba/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 11:30:12,205 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c04a0f81-8b6c-4bc8-9c3a-7f4603344bba/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 (42)] Waiting until timeout for monitored process [2022-11-16 11:30:12,417 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 8 check-sat command(s) [2022-11-16 11:30:12,417 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 11:30:12,424 INFO L263 TraceCheckSpWp]: Trace formula consists of 188 conjuncts, 26 conjunts are in the unsatisfiable core [2022-11-16 11:30:12,426 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:30:12,444 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 8 treesize of output 7 [2022-11-16 11:30:13,615 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 42 proven. 56 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-11-16 11:30:13,615 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:30:17,650 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 0 proven. 102 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-16 11:30:17,650 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 11:30:17,650 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [946169871] [2022-11-16 11:30:17,650 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [946169871] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 11:30:17,650 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-16 11:30:17,650 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 14] total 26 [2022-11-16 11:30:17,651 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [131260350] [2022-11-16 11:30:17,651 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-16 11:30:17,651 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-11-16 11:30:17,651 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 11:30:17,652 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-11-16 11:30:17,652 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=558, Unknown=0, NotChecked=0, Total=650 [2022-11-16 11:30:17,652 INFO L87 Difference]: Start difference. First operand 725 states and 875 transitions. Second operand has 26 states, 26 states have (on average 4.423076923076923) internal successors, (115), 26 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:30:19,775 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:30:19,775 INFO L93 Difference]: Finished difference Result 885 states and 1055 transitions. [2022-11-16 11:30:19,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-11-16 11:30:19,776 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 4.423076923076923) internal successors, (115), 26 states have internal predecessors, (115), 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 62 [2022-11-16 11:30:19,776 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:30:19,778 INFO L225 Difference]: With dead ends: 885 [2022-11-16 11:30:19,778 INFO L226 Difference]: Without dead ends: 884 [2022-11-16 11:30:19,778 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 128 GetRequests, 98 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 160 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=157, Invalid=835, Unknown=0, NotChecked=0, Total=992 [2022-11-16 11:30:19,778 INFO L413 NwaCegarLoop]: 35 mSDtfsCounter, 99 mSDsluCounter, 462 mSDsCounter, 0 mSdLazyCounter, 321 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 99 SdHoareTripleChecker+Valid, 497 SdHoareTripleChecker+Invalid, 372 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 321 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 41 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-11-16 11:30:19,779 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [99 Valid, 497 Invalid, 372 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 321 Invalid, 0 Unknown, 41 Unchecked, 1.3s Time] [2022-11-16 11:30:19,779 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 884 states. [2022-11-16 11:30:19,796 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 884 to 798. [2022-11-16 11:30:19,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 798 states, 796 states have (on average 1.2097989949748744) internal successors, (963), 797 states have internal predecessors, (963), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:30:19,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 798 states to 798 states and 963 transitions. [2022-11-16 11:30:19,798 INFO L78 Accepts]: Start accepts. Automaton has 798 states and 963 transitions. Word has length 62 [2022-11-16 11:30:19,799 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:30:19,799 INFO L495 AbstractCegarLoop]: Abstraction has 798 states and 963 transitions. [2022-11-16 11:30:19,799 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 4.423076923076923) internal successors, (115), 26 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:30:19,799 INFO L276 IsEmpty]: Start isEmpty. Operand 798 states and 963 transitions. [2022-11-16 11:30:19,800 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-11-16 11:30:19,800 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:30:19,800 INFO L195 NwaCegarLoop]: trace histogram [16, 15, 15, 15, 1, 1, 1, 1, 1] [2022-11-16 11:30:19,818 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c04a0f81-8b6c-4bc8-9c3a-7f4603344bba/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 (42)] Forceful destruction successful, exit code 0 [2022-11-16 11:30:20,013 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 42 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c04a0f81-8b6c-4bc8-9c3a-7f4603344bba/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 11:30:20,013 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2022-11-16 11:30:20,014 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:30:20,014 INFO L85 PathProgramCache]: Analyzing trace with hash 58542645, now seen corresponding path program 4 times [2022-11-16 11:30:20,014 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 11:30:20,014 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [172290624] [2022-11-16 11:30:20,014 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-16 11:30:20,014 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 11:30:20,014 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c04a0f81-8b6c-4bc8-9c3a-7f4603344bba/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 11:30:20,015 INFO L229 MonitoredProcess]: Starting monitored process 43 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c04a0f81-8b6c-4bc8-9c3a-7f4603344bba/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 11:30:20,017 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c04a0f81-8b6c-4bc8-9c3a-7f4603344bba/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 (43)] Waiting until timeout for monitored process [2022-11-16 11:30:20,160 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-16 11:30:20,160 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 11:30:20,167 INFO L263 TraceCheckSpWp]: Trace formula consists of 218 conjuncts, 28 conjunts are in the unsatisfiable core [2022-11-16 11:30:20,169 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:30:20,183 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 8 treesize of output 7 [2022-11-16 11:30:22,356 INFO L134 CoverageAnalysis]: Checked inductivity of 450 backedges. 0 proven. 450 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:30:22,356 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:30:32,330 INFO L134 CoverageAnalysis]: Checked inductivity of 450 backedges. 0 proven. 450 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:30:32,330 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 11:30:32,330 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [172290624] [2022-11-16 11:30:32,330 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [172290624] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 11:30:32,330 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-16 11:30:32,331 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23] total 45 [2022-11-16 11:30:32,331 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1310709384] [2022-11-16 11:30:32,331 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-16 11:30:32,331 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2022-11-16 11:30:32,331 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 11:30:32,332 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2022-11-16 11:30:32,332 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=545, Invalid=1525, Unknown=0, NotChecked=0, Total=2070 [2022-11-16 11:30:32,332 INFO L87 Difference]: Start difference. First operand 798 states and 963 transitions. Second operand has 46 states, 45 states have (on average 2.888888888888889) internal successors, (130), 46 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:30:45,317 WARN L233 SmtUtils]: Spent 6.55s on a formula simplification that was a NOOP. DAG size: 171 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-16 11:30:47,493 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-16 11:30:49,495 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-16 11:30:51,534 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-16 11:30:53,544 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-16 11:31:01,039 WARN L233 SmtUtils]: Spent 6.79s on a formula simplification that was a NOOP. DAG size: 168 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-16 11:31:13,164 WARN L233 SmtUtils]: Spent 10.99s on a formula simplification. DAG size of input: 163 DAG size of output: 163 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-16 11:31:15,727 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-16 11:31:17,730 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-16 11:31:19,777 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-16 11:31:21,780 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-16 11:31:35,413 WARN L233 SmtUtils]: Spent 8.13s on a formula simplification. DAG size of input: 152 DAG size of output: 152 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-16 11:31:38,067 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-16 11:31:40,069 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-16 11:31:42,072 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-16 11:31:44,075 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-16 11:31:58,715 WARN L233 SmtUtils]: Spent 8.65s on a formula simplification. DAG size of input: 141 DAG size of output: 141 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-16 11:32:01,382 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-16 11:32:03,403 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-16 11:32:05,407 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-16 11:32:07,410 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-16 11:32:13,388 WARN L233 SmtUtils]: Spent 5.38s on a formula simplification that was a NOOP. DAG size: 136 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-16 11:32:21,217 WARN L233 SmtUtils]: Spent 6.88s on a formula simplification. DAG size of input: 131 DAG size of output: 131 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-16 11:32:23,602 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-16 11:32:25,605 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-16 11:32:27,608 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-16 11:32:29,611 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-16 11:32:39,645 WARN L233 SmtUtils]: Spent 5.31s on a formula simplification. DAG size of input: 120 DAG size of output: 120 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-16 11:32:41,955 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-16 11:32:43,958 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-16 11:32:45,961 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-16 11:32:47,965 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-16 11:32:57,274 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-16 11:32:59,303 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-16 11:33:01,306 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-16 11:33:03,310 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-16 11:33:12,295 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-16 11:33:14,298 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-16 11:33:16,301 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-16 11:33:23,482 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-16 11:33:25,485 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-16 11:33:26,908 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.42s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-16 11:33:33,057 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-16 11:33:35,060 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-16 11:33:40,244 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-16 11:33:42,273 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-16 11:33:46,837 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-16 11:33:50,388 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.55s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-16 11:33:55,026 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:33:55,027 INFO L93 Difference]: Finished difference Result 5214 states and 6102 transitions. [2022-11-16 11:33:55,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2022-11-16 11:33:55,028 INFO L78 Accepts]: Start accepts. Automaton has has 46 states, 45 states have (on average 2.888888888888889) internal successors, (130), 46 states have internal predecessors, (130), 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 66 [2022-11-16 11:33:55,029 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:33:55,035 INFO L225 Difference]: With dead ends: 5214 [2022-11-16 11:33:55,035 INFO L226 Difference]: Without dead ends: 5214 [2022-11-16 11:33:55,037 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 172 GetRequests, 87 SyntacticMatches, 0 SemanticMatches, 85 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2429 ImplicationChecksByTransitivity, 116.3s TimeCoverageRelationStatistics Valid=2212, Invalid=5270, Unknown=0, NotChecked=0, Total=7482 [2022-11-16 11:33:55,037 INFO L413 NwaCegarLoop]: 149 mSDtfsCounter, 5657 mSDsluCounter, 3287 mSDsCounter, 0 mSdLazyCounter, 3851 mSolverCounterSat, 145 mSolverCounterUnsat, 38 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 92.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5657 SdHoareTripleChecker+Valid, 3436 SdHoareTripleChecker+Invalid, 4081 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 145 IncrementalHoareTripleChecker+Valid, 3851 IncrementalHoareTripleChecker+Invalid, 38 IncrementalHoareTripleChecker+Unknown, 47 IncrementalHoareTripleChecker+Unchecked, 94.0s IncrementalHoareTripleChecker+Time [2022-11-16 11:33:55,037 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5657 Valid, 3436 Invalid, 4081 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [145 Valid, 3851 Invalid, 38 Unknown, 47 Unchecked, 94.0s Time] [2022-11-16 11:33:55,040 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5214 states. [2022-11-16 11:33:55,058 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5214 to 862. [2022-11-16 11:33:55,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 862 states, 860 states have (on average 1.2127906976744185) internal successors, (1043), 861 states have internal predecessors, (1043), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:33:55,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 862 states to 862 states and 1043 transitions. [2022-11-16 11:33:55,061 INFO L78 Accepts]: Start accepts. Automaton has 862 states and 1043 transitions. Word has length 66 [2022-11-16 11:33:55,061 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:33:55,061 INFO L495 AbstractCegarLoop]: Abstraction has 862 states and 1043 transitions. [2022-11-16 11:33:55,061 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 45 states have (on average 2.888888888888889) internal successors, (130), 46 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:33:55,061 INFO L276 IsEmpty]: Start isEmpty. Operand 862 states and 1043 transitions. [2022-11-16 11:33:55,062 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-11-16 11:33:55,063 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:33:55,063 INFO L195 NwaCegarLoop]: trace histogram [7, 6, 6, 5, 5, 5, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:33:55,080 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c04a0f81-8b6c-4bc8-9c3a-7f4603344bba/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 (43)] Forceful destruction successful, exit code 0 [2022-11-16 11:33:55,275 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 43 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c04a0f81-8b6c-4bc8-9c3a-7f4603344bba/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 11:33:55,276 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2022-11-16 11:33:55,276 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:33:55,276 INFO L85 PathProgramCache]: Analyzing trace with hash -1582841650, now seen corresponding path program 6 times [2022-11-16 11:33:55,276 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 11:33:55,276 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1791637068] [2022-11-16 11:33:55,277 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-11-16 11:33:55,277 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 11:33:55,277 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c04a0f81-8b6c-4bc8-9c3a-7f4603344bba/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 11:33:55,277 INFO L229 MonitoredProcess]: Starting monitored process 44 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c04a0f81-8b6c-4bc8-9c3a-7f4603344bba/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 11:33:55,281 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c04a0f81-8b6c-4bc8-9c3a-7f4603344bba/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 (44)] Waiting until timeout for monitored process [2022-11-16 11:33:55,514 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2022-11-16 11:33:55,514 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 11:33:55,521 INFO L263 TraceCheckSpWp]: Trace formula consists of 165 conjuncts, 23 conjunts are in the unsatisfiable core [2022-11-16 11:33:55,523 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:33:55,539 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 8 treesize of output 7 [2022-11-16 11:33:56,894 INFO L134 CoverageAnalysis]: Checked inductivity of 122 backedges. 32 proven. 84 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-16 11:33:56,895 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:34:01,245 INFO L134 CoverageAnalysis]: Checked inductivity of 122 backedges. 0 proven. 116 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-16 11:34:01,245 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 11:34:01,246 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1791637068] [2022-11-16 11:34:01,246 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1791637068] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 11:34:01,246 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-16 11:34:01,246 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 14] total 26 [2022-11-16 11:34:01,247 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1884381660] [2022-11-16 11:34:01,247 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-16 11:34:01,247 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-11-16 11:34:01,247 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 11:34:01,248 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-11-16 11:34:01,249 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=100, Invalid=550, Unknown=0, NotChecked=0, Total=650 [2022-11-16 11:34:01,249 INFO L87 Difference]: Start difference. First operand 862 states and 1043 transitions. Second operand has 26 states, 26 states have (on average 4.923076923076923) internal successors, (128), 26 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:34:05,266 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:34:05,266 INFO L93 Difference]: Finished difference Result 1222 states and 1439 transitions. [2022-11-16 11:34:05,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-11-16 11:34:05,268 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 4.923076923076923) internal successors, (128), 26 states have internal predecessors, (128), 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 68 [2022-11-16 11:34:05,268 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:34:05,270 INFO L225 Difference]: With dead ends: 1222 [2022-11-16 11:34:05,270 INFO L226 Difference]: Without dead ends: 1211 [2022-11-16 11:34:05,270 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 146 GetRequests, 112 SyntacticMatches, 1 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 181 ImplicationChecksByTransitivity, 4.6s TimeCoverageRelationStatistics Valid=169, Invalid=1021, Unknown=0, NotChecked=0, Total=1190 [2022-11-16 11:34:05,271 INFO L413 NwaCegarLoop]: 51 mSDtfsCounter, 115 mSDsluCounter, 649 mSDsCounter, 0 mSdLazyCounter, 425 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 115 SdHoareTripleChecker+Valid, 700 SdHoareTripleChecker+Invalid, 503 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 425 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 68 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2022-11-16 11:34:05,271 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [115 Valid, 700 Invalid, 503 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 425 Invalid, 0 Unknown, 68 Unchecked, 2.3s Time] [2022-11-16 11:34:05,272 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1211 states. [2022-11-16 11:34:05,280 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1211 to 862. [2022-11-16 11:34:05,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 862 states, 860 states have (on average 1.2116279069767442) internal successors, (1042), 861 states have internal predecessors, (1042), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:34:05,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 862 states to 862 states and 1042 transitions. [2022-11-16 11:34:05,282 INFO L78 Accepts]: Start accepts. Automaton has 862 states and 1042 transitions. Word has length 68 [2022-11-16 11:34:05,283 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:34:05,283 INFO L495 AbstractCegarLoop]: Abstraction has 862 states and 1042 transitions. [2022-11-16 11:34:05,283 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 4.923076923076923) internal successors, (128), 26 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:34:05,283 INFO L276 IsEmpty]: Start isEmpty. Operand 862 states and 1042 transitions. [2022-11-16 11:34:05,284 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-11-16 11:34:05,284 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:34:05,285 INFO L195 NwaCegarLoop]: trace histogram [7, 6, 6, 5, 5, 5, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:34:05,298 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c04a0f81-8b6c-4bc8-9c3a-7f4603344bba/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 (44)] Ended with exit code 0 [2022-11-16 11:34:05,497 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 44 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c04a0f81-8b6c-4bc8-9c3a-7f4603344bba/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 11:34:05,498 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2022-11-16 11:34:05,498 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:34:05,498 INFO L85 PathProgramCache]: Analyzing trace with hash 978909326, now seen corresponding path program 7 times [2022-11-16 11:34:05,498 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 11:34:05,498 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1905182025] [2022-11-16 11:34:05,498 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-11-16 11:34:05,499 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 11:34:05,499 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c04a0f81-8b6c-4bc8-9c3a-7f4603344bba/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 11:34:05,499 INFO L229 MonitoredProcess]: Starting monitored process 45 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c04a0f81-8b6c-4bc8-9c3a-7f4603344bba/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 11:34:05,500 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c04a0f81-8b6c-4bc8-9c3a-7f4603344bba/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 (45)] Waiting until timeout for monitored process [2022-11-16 11:34:05,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:34:05,655 INFO L263 TraceCheckSpWp]: Trace formula consists of 211 conjuncts, 23 conjunts are in the unsatisfiable core [2022-11-16 11:34:05,656 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:34:05,672 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 8 treesize of output 7 [2022-11-16 11:34:06,845 INFO L134 CoverageAnalysis]: Checked inductivity of 123 backedges. 45 proven. 68 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-11-16 11:34:06,845 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:34:10,650 INFO L134 CoverageAnalysis]: Checked inductivity of 123 backedges. 0 proven. 117 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-16 11:34:10,650 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 11:34:10,651 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1905182025] [2022-11-16 11:34:10,651 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1905182025] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 11:34:10,651 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-16 11:34:10,651 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 14] total 25 [2022-11-16 11:34:10,651 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1586854477] [2022-11-16 11:34:10,654 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-16 11:34:10,654 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-11-16 11:34:10,655 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 11:34:10,655 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-11-16 11:34:10,655 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=514, Unknown=0, NotChecked=0, Total=600 [2022-11-16 11:34:10,655 INFO L87 Difference]: Start difference. First operand 862 states and 1042 transitions. Second operand has 25 states, 25 states have (on average 5.0) internal successors, (125), 25 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:34:12,079 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:34:12,079 INFO L93 Difference]: Finished difference Result 892 states and 1072 transitions. [2022-11-16 11:34:12,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-11-16 11:34:12,081 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 5.0) internal successors, (125), 25 states have internal predecessors, (125), 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 68 [2022-11-16 11:34:12,081 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:34:12,083 INFO L225 Difference]: With dead ends: 892 [2022-11-16 11:34:12,083 INFO L226 Difference]: Without dead ends: 865 [2022-11-16 11:34:12,083 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 139 GetRequests, 111 SyntacticMatches, 1 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 129 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=120, Invalid=692, Unknown=0, NotChecked=0, Total=812 [2022-11-16 11:34:12,084 INFO L413 NwaCegarLoop]: 31 mSDtfsCounter, 86 mSDsluCounter, 344 mSDsCounter, 0 mSdLazyCounter, 209 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 86 SdHoareTripleChecker+Valid, 375 SdHoareTripleChecker+Invalid, 282 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 209 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 64 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-11-16 11:34:12,084 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [86 Valid, 375 Invalid, 282 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 209 Invalid, 0 Unknown, 64 Unchecked, 1.0s Time] [2022-11-16 11:34:12,084 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 865 states. [2022-11-16 11:34:12,090 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 865 to 850. [2022-11-16 11:34:12,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 850 states, 848 states have (on average 1.2122641509433962) internal successors, (1028), 849 states have internal predecessors, (1028), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:34:12,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 850 states to 850 states and 1028 transitions. [2022-11-16 11:34:12,091 INFO L78 Accepts]: Start accepts. Automaton has 850 states and 1028 transitions. Word has length 68 [2022-11-16 11:34:12,091 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:34:12,091 INFO L495 AbstractCegarLoop]: Abstraction has 850 states and 1028 transitions. [2022-11-16 11:34:12,091 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 5.0) internal successors, (125), 25 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:34:12,091 INFO L276 IsEmpty]: Start isEmpty. Operand 850 states and 1028 transitions. [2022-11-16 11:34:12,092 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-11-16 11:34:12,093 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:34:12,093 INFO L195 NwaCegarLoop]: trace histogram [7, 6, 6, 5, 5, 5, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:34:12,102 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c04a0f81-8b6c-4bc8-9c3a-7f4603344bba/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 (45)] Ended with exit code 0 [2022-11-16 11:34:12,298 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 45 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c04a0f81-8b6c-4bc8-9c3a-7f4603344bba/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 11:34:12,298 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2022-11-16 11:34:12,299 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:34:12,299 INFO L85 PathProgramCache]: Analyzing trace with hash -1048356722, now seen corresponding path program 8 times [2022-11-16 11:34:12,299 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 11:34:12,299 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1604291282] [2022-11-16 11:34:12,299 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-16 11:34:12,299 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 11:34:12,300 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c04a0f81-8b6c-4bc8-9c3a-7f4603344bba/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 11:34:12,300 INFO L229 MonitoredProcess]: Starting monitored process 46 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c04a0f81-8b6c-4bc8-9c3a-7f4603344bba/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 11:34:12,316 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c04a0f81-8b6c-4bc8-9c3a-7f4603344bba/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 (46)] Waiting until timeout for monitored process [2022-11-16 11:34:12,457 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-16 11:34:12,457 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 11:34:12,464 INFO L263 TraceCheckSpWp]: Trace formula consists of 211 conjuncts, 23 conjunts are in the unsatisfiable core [2022-11-16 11:34:12,466 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:34:12,486 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 8 treesize of output 7 [2022-11-16 11:34:13,593 INFO L134 CoverageAnalysis]: Checked inductivity of 123 backedges. 45 proven. 68 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-11-16 11:34:13,593 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:34:17,323 INFO L134 CoverageAnalysis]: Checked inductivity of 123 backedges. 0 proven. 117 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-16 11:34:17,323 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 11:34:17,324 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1604291282] [2022-11-16 11:34:17,324 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1604291282] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 11:34:17,324 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-16 11:34:17,324 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 14] total 25 [2022-11-16 11:34:17,324 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [795513991] [2022-11-16 11:34:17,324 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-16 11:34:17,324 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-11-16 11:34:17,324 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 11:34:17,325 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-11-16 11:34:17,325 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=514, Unknown=0, NotChecked=0, Total=600 [2022-11-16 11:34:17,325 INFO L87 Difference]: Start difference. First operand 850 states and 1028 transitions. Second operand has 25 states, 25 states have (on average 5.0) internal successors, (125), 25 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:34:18,886 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:34:18,886 INFO L93 Difference]: Finished difference Result 841 states and 1008 transitions. [2022-11-16 11:34:18,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-11-16 11:34:18,888 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 5.0) internal successors, (125), 25 states have internal predecessors, (125), 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 68 [2022-11-16 11:34:18,888 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:34:18,890 INFO L225 Difference]: With dead ends: 841 [2022-11-16 11:34:18,890 INFO L226 Difference]: Without dead ends: 826 [2022-11-16 11:34:18,891 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 113 SyntacticMatches, 1 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 136 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=126, Invalid=744, Unknown=0, NotChecked=0, Total=870 [2022-11-16 11:34:18,891 INFO L413 NwaCegarLoop]: 31 mSDtfsCounter, 57 mSDsluCounter, 400 mSDsCounter, 0 mSdLazyCounter, 192 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 57 SdHoareTripleChecker+Valid, 431 SdHoareTripleChecker+Invalid, 290 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 192 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 89 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-11-16 11:34:18,891 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [57 Valid, 431 Invalid, 290 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 192 Invalid, 0 Unknown, 89 Unchecked, 0.9s Time] [2022-11-16 11:34:18,892 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 826 states. [2022-11-16 11:34:18,901 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 826 to 806. [2022-11-16 11:34:18,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 806 states, 804 states have (on average 1.208955223880597) internal successors, (972), 805 states have internal predecessors, (972), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:34:18,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 806 states to 806 states and 972 transitions. [2022-11-16 11:34:18,902 INFO L78 Accepts]: Start accepts. Automaton has 806 states and 972 transitions. Word has length 68 [2022-11-16 11:34:18,903 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:34:18,903 INFO L495 AbstractCegarLoop]: Abstraction has 806 states and 972 transitions. [2022-11-16 11:34:18,903 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 5.0) internal successors, (125), 25 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:34:18,903 INFO L276 IsEmpty]: Start isEmpty. Operand 806 states and 972 transitions. [2022-11-16 11:34:18,906 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-11-16 11:34:18,907 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:34:18,907 INFO L195 NwaCegarLoop]: trace histogram [8, 6, 5, 5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:34:18,921 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c04a0f81-8b6c-4bc8-9c3a-7f4603344bba/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 (46)] Forceful destruction successful, exit code 0 [2022-11-16 11:34:19,118 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 46 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c04a0f81-8b6c-4bc8-9c3a-7f4603344bba/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 11:34:19,118 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2022-11-16 11:34:19,118 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:34:19,118 INFO L85 PathProgramCache]: Analyzing trace with hash 1513394254, now seen corresponding path program 6 times [2022-11-16 11:34:19,119 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 11:34:19,119 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1473623962] [2022-11-16 11:34:19,119 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-11-16 11:34:19,119 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 11:34:19,119 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c04a0f81-8b6c-4bc8-9c3a-7f4603344bba/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 11:34:19,120 INFO L229 MonitoredProcess]: Starting monitored process 47 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c04a0f81-8b6c-4bc8-9c3a-7f4603344bba/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 11:34:19,121 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c04a0f81-8b6c-4bc8-9c3a-7f4603344bba/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 (47)] Waiting until timeout for monitored process [2022-11-16 11:34:19,441 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2022-11-16 11:34:19,441 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 11:34:19,451 INFO L263 TraceCheckSpWp]: Trace formula consists of 211 conjuncts, 23 conjunts are in the unsatisfiable core [2022-11-16 11:34:19,454 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:34:19,475 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 8 treesize of output 7 [2022-11-16 11:34:20,713 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 32 proven. 98 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-16 11:34:20,713 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:34:24,706 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 0 proven. 130 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-16 11:34:24,707 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 11:34:24,707 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1473623962] [2022-11-16 11:34:24,707 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1473623962] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 11:34:24,707 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-16 11:34:24,707 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 14] total 26 [2022-11-16 11:34:24,707 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1911559700] [2022-11-16 11:34:24,707 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-16 11:34:24,708 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-11-16 11:34:24,708 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 11:34:24,708 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-11-16 11:34:24,708 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=100, Invalid=550, Unknown=0, NotChecked=0, Total=650 [2022-11-16 11:34:24,708 INFO L87 Difference]: Start difference. First operand 806 states and 972 transitions. Second operand has 26 states, 26 states have (on average 4.923076923076923) internal successors, (128), 26 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:34:28,279 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:34:28,279 INFO L93 Difference]: Finished difference Result 1091 states and 1293 transitions. [2022-11-16 11:34:28,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-11-16 11:34:28,281 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 4.923076923076923) internal successors, (128), 26 states have internal predecessors, (128), 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 68 [2022-11-16 11:34:28,281 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:34:28,282 INFO L225 Difference]: With dead ends: 1091 [2022-11-16 11:34:28,282 INFO L226 Difference]: Without dead ends: 1061 [2022-11-16 11:34:28,283 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 147 GetRequests, 113 SyntacticMatches, 1 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 181 ImplicationChecksByTransitivity, 4.4s TimeCoverageRelationStatistics Valid=169, Invalid=1021, Unknown=0, NotChecked=0, Total=1190 [2022-11-16 11:34:28,283 INFO L413 NwaCegarLoop]: 49 mSDtfsCounter, 116 mSDsluCounter, 682 mSDsCounter, 0 mSdLazyCounter, 373 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 116 SdHoareTripleChecker+Valid, 731 SdHoareTripleChecker+Invalid, 572 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 373 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 182 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2022-11-16 11:34:28,283 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [116 Valid, 731 Invalid, 572 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 373 Invalid, 0 Unknown, 182 Unchecked, 1.9s Time] [2022-11-16 11:34:28,284 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1061 states. [2022-11-16 11:34:28,289 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1061 to 782. [2022-11-16 11:34:28,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 782 states, 780 states have (on average 1.2115384615384615) internal successors, (945), 781 states have internal predecessors, (945), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:34:28,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 782 states to 782 states and 945 transitions. [2022-11-16 11:34:28,290 INFO L78 Accepts]: Start accepts. Automaton has 782 states and 945 transitions. Word has length 68 [2022-11-16 11:34:28,291 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:34:28,291 INFO L495 AbstractCegarLoop]: Abstraction has 782 states and 945 transitions. [2022-11-16 11:34:28,291 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 4.923076923076923) internal successors, (128), 26 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:34:28,291 INFO L276 IsEmpty]: Start isEmpty. Operand 782 states and 945 transitions. [2022-11-16 11:34:28,292 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-11-16 11:34:28,292 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:34:28,292 INFO L195 NwaCegarLoop]: trace histogram [7, 6, 6, 5, 5, 5, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:34:28,301 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c04a0f81-8b6c-4bc8-9c3a-7f4603344bba/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 (47)] Forceful destruction successful, exit code 0 [2022-11-16 11:34:28,494 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 47 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c04a0f81-8b6c-4bc8-9c3a-7f4603344bba/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 11:34:28,494 INFO L420 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2022-11-16 11:34:28,495 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:34:28,495 INFO L85 PathProgramCache]: Analyzing trace with hash 477616526, now seen corresponding path program 9 times [2022-11-16 11:34:28,495 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 11:34:28,495 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1169600066] [2022-11-16 11:34:28,495 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-16 11:34:28,495 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 11:34:28,495 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c04a0f81-8b6c-4bc8-9c3a-7f4603344bba/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 11:34:28,496 INFO L229 MonitoredProcess]: Starting monitored process 48 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c04a0f81-8b6c-4bc8-9c3a-7f4603344bba/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 11:34:28,498 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c04a0f81-8b6c-4bc8-9c3a-7f4603344bba/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 (48)] Waiting until timeout for monitored process [2022-11-16 11:34:28,964 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2022-11-16 11:34:28,964 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 11:34:28,974 INFO L263 TraceCheckSpWp]: Trace formula consists of 211 conjuncts, 23 conjunts are in the unsatisfiable core [2022-11-16 11:34:28,977 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:34:28,992 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 8 treesize of output 7 [2022-11-16 11:34:30,266 INFO L134 CoverageAnalysis]: Checked inductivity of 122 backedges. 32 proven. 84 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-16 11:34:30,266 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:34:34,521 INFO L134 CoverageAnalysis]: Checked inductivity of 122 backedges. 0 proven. 116 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-16 11:34:34,521 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 11:34:34,522 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1169600066] [2022-11-16 11:34:34,522 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1169600066] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 11:34:34,522 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-16 11:34:34,522 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 14] total 26 [2022-11-16 11:34:34,522 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [149018976] [2022-11-16 11:34:34,522 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-16 11:34:34,522 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-11-16 11:34:34,522 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 11:34:34,523 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-11-16 11:34:34,523 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=100, Invalid=550, Unknown=0, NotChecked=0, Total=650 [2022-11-16 11:34:34,523 INFO L87 Difference]: Start difference. First operand 782 states and 945 transitions. Second operand has 26 states, 26 states have (on average 4.923076923076923) internal successors, (128), 26 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:34:39,905 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:34:39,905 INFO L93 Difference]: Finished difference Result 947 states and 1132 transitions. [2022-11-16 11:34:39,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-11-16 11:34:39,907 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 4.923076923076923) internal successors, (128), 26 states have internal predecessors, (128), 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 68 [2022-11-16 11:34:39,907 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:34:39,908 INFO L225 Difference]: With dead ends: 947 [2022-11-16 11:34:39,908 INFO L226 Difference]: Without dead ends: 936 [2022-11-16 11:34:39,909 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 152 GetRequests, 113 SyntacticMatches, 1 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 249 ImplicationChecksByTransitivity, 6.3s TimeCoverageRelationStatistics Valid=209, Invalid=1351, Unknown=0, NotChecked=0, Total=1560 [2022-11-16 11:34:39,909 INFO L413 NwaCegarLoop]: 58 mSDtfsCounter, 95 mSDsluCounter, 853 mSDsCounter, 0 mSdLazyCounter, 381 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 95 SdHoareTripleChecker+Valid, 911 SdHoareTripleChecker+Invalid, 609 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 381 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 216 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2022-11-16 11:34:39,910 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [95 Valid, 911 Invalid, 609 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 381 Invalid, 0 Unknown, 216 Unchecked, 2.0s Time] [2022-11-16 11:34:39,910 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 936 states. [2022-11-16 11:34:39,916 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 936 to 785. [2022-11-16 11:34:39,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 785 states, 783 states have (on average 1.210727969348659) internal successors, (948), 784 states have internal predecessors, (948), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:34:39,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 785 states to 785 states and 948 transitions. [2022-11-16 11:34:39,918 INFO L78 Accepts]: Start accepts. Automaton has 785 states and 948 transitions. Word has length 68 [2022-11-16 11:34:39,918 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:34:39,918 INFO L495 AbstractCegarLoop]: Abstraction has 785 states and 948 transitions. [2022-11-16 11:34:39,918 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 4.923076923076923) internal successors, (128), 26 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:34:39,918 INFO L276 IsEmpty]: Start isEmpty. Operand 785 states and 948 transitions. [2022-11-16 11:34:39,919 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-11-16 11:34:39,919 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:34:39,919 INFO L195 NwaCegarLoop]: trace histogram [7, 6, 6, 5, 5, 5, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:34:39,930 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c04a0f81-8b6c-4bc8-9c3a-7f4603344bba/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 (48)] Forceful destruction successful, exit code 0 [2022-11-16 11:34:40,120 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 48 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c04a0f81-8b6c-4bc8-9c3a-7f4603344bba/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 11:34:40,120 INFO L420 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2022-11-16 11:34:40,120 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:34:40,120 INFO L85 PathProgramCache]: Analyzing trace with hash 789969038, now seen corresponding path program 10 times [2022-11-16 11:34:40,121 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 11:34:40,121 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1425210509] [2022-11-16 11:34:40,121 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-16 11:34:40,121 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 11:34:40,121 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c04a0f81-8b6c-4bc8-9c3a-7f4603344bba/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 11:34:40,122 INFO L229 MonitoredProcess]: Starting monitored process 49 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c04a0f81-8b6c-4bc8-9c3a-7f4603344bba/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 11:34:40,124 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c04a0f81-8b6c-4bc8-9c3a-7f4603344bba/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 (49)] Waiting until timeout for monitored process [2022-11-16 11:34:40,278 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-16 11:34:40,278 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 11:34:40,285 INFO L263 TraceCheckSpWp]: Trace formula consists of 211 conjuncts, 23 conjunts are in the unsatisfiable core [2022-11-16 11:34:40,287 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:34:40,301 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 8 treesize of output 7 [2022-11-16 11:34:41,373 INFO L134 CoverageAnalysis]: Checked inductivity of 123 backedges. 56 proven. 56 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-11-16 11:34:41,373 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:34:45,270 INFO L134 CoverageAnalysis]: Checked inductivity of 123 backedges. 0 proven. 117 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-16 11:34:45,270 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 11:34:45,270 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1425210509] [2022-11-16 11:34:45,270 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1425210509] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 11:34:45,270 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-16 11:34:45,270 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 14] total 25 [2022-11-16 11:34:45,270 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [798888686] [2022-11-16 11:34:45,270 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-16 11:34:45,271 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-11-16 11:34:45,271 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 11:34:45,271 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-11-16 11:34:45,271 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=514, Unknown=0, NotChecked=0, Total=600 [2022-11-16 11:34:45,272 INFO L87 Difference]: Start difference. First operand 785 states and 948 transitions. Second operand has 25 states, 25 states have (on average 5.0) internal successors, (125), 25 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:34:47,090 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:34:47,090 INFO L93 Difference]: Finished difference Result 837 states and 1005 transitions. [2022-11-16 11:34:47,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-11-16 11:34:47,091 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 5.0) internal successors, (125), 25 states have internal predecessors, (125), 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 68 [2022-11-16 11:34:47,092 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:34:47,094 INFO L225 Difference]: With dead ends: 837 [2022-11-16 11:34:47,094 INFO L226 Difference]: Without dead ends: 836 [2022-11-16 11:34:47,094 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 112 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 137 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=123, Invalid=747, Unknown=0, NotChecked=0, Total=870 [2022-11-16 11:34:47,095 INFO L413 NwaCegarLoop]: 37 mSDtfsCounter, 59 mSDsluCounter, 563 mSDsCounter, 0 mSdLazyCounter, 184 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 59 SdHoareTripleChecker+Valid, 600 SdHoareTripleChecker+Invalid, 305 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 184 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 113 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-11-16 11:34:47,095 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [59 Valid, 600 Invalid, 305 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 184 Invalid, 0 Unknown, 113 Unchecked, 1.0s Time] [2022-11-16 11:34:47,096 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 836 states. [2022-11-16 11:34:47,102 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 836 to 814. [2022-11-16 11:34:47,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 814 states, 812 states have (on average 1.20935960591133) internal successors, (982), 813 states have internal predecessors, (982), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:34:47,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 814 states to 814 states and 982 transitions. [2022-11-16 11:34:47,104 INFO L78 Accepts]: Start accepts. Automaton has 814 states and 982 transitions. Word has length 68 [2022-11-16 11:34:47,104 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:34:47,104 INFO L495 AbstractCegarLoop]: Abstraction has 814 states and 982 transitions. [2022-11-16 11:34:47,104 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 5.0) internal successors, (125), 25 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:34:47,104 INFO L276 IsEmpty]: Start isEmpty. Operand 814 states and 982 transitions. [2022-11-16 11:34:47,105 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-11-16 11:34:47,105 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:34:47,105 INFO L195 NwaCegarLoop]: trace histogram [7, 6, 6, 5, 5, 5, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:34:47,113 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c04a0f81-8b6c-4bc8-9c3a-7f4603344bba/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 (49)] Ended with exit code 0 [2022-11-16 11:34:47,306 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 49 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c04a0f81-8b6c-4bc8-9c3a-7f4603344bba/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 11:34:47,306 INFO L420 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2022-11-16 11:34:47,306 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:34:47,307 INFO L85 PathProgramCache]: Analyzing trace with hash -1255599794, now seen corresponding path program 11 times [2022-11-16 11:34:47,307 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 11:34:47,307 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1192106487] [2022-11-16 11:34:47,307 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-11-16 11:34:47,307 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 11:34:47,307 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c04a0f81-8b6c-4bc8-9c3a-7f4603344bba/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 11:34:47,308 INFO L229 MonitoredProcess]: Starting monitored process 50 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c04a0f81-8b6c-4bc8-9c3a-7f4603344bba/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 11:34:47,309 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c04a0f81-8b6c-4bc8-9c3a-7f4603344bba/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 (50)] Waiting until timeout for monitored process [2022-11-16 11:34:47,595 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) [2022-11-16 11:34:47,595 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 11:34:47,604 INFO L263 TraceCheckSpWp]: Trace formula consists of 211 conjuncts, 26 conjunts are in the unsatisfiable core [2022-11-16 11:34:47,606 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:34:47,619 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 8 treesize of output 7 [2022-11-16 11:34:48,858 INFO L134 CoverageAnalysis]: Checked inductivity of 123 backedges. 45 proven. 68 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-11-16 11:34:48,858 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:34:53,171 INFO L134 CoverageAnalysis]: Checked inductivity of 123 backedges. 0 proven. 117 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-16 11:34:53,172 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 11:34:53,172 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1192106487] [2022-11-16 11:34:53,172 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1192106487] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 11:34:53,172 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-16 11:34:53,172 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 14] total 26 [2022-11-16 11:34:53,173 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1030189307] [2022-11-16 11:34:53,173 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-16 11:34:53,173 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-11-16 11:34:53,173 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 11:34:53,173 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-11-16 11:34:53,174 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=558, Unknown=0, NotChecked=0, Total=650 [2022-11-16 11:34:53,174 INFO L87 Difference]: Start difference. First operand 814 states and 982 transitions. Second operand has 26 states, 26 states have (on average 4.8076923076923075) internal successors, (125), 26 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:34:55,133 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:34:55,133 INFO L93 Difference]: Finished difference Result 850 states and 1021 transitions. [2022-11-16 11:34:55,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-11-16 11:34:55,135 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 4.8076923076923075) internal successors, (125), 26 states have internal predecessors, (125), 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 68 [2022-11-16 11:34:55,135 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:34:55,137 INFO L225 Difference]: With dead ends: 850 [2022-11-16 11:34:55,137 INFO L226 Difference]: Without dead ends: 827 [2022-11-16 11:34:55,137 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 138 GetRequests, 110 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 141 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=145, Invalid=725, Unknown=0, NotChecked=0, Total=870 [2022-11-16 11:34:55,137 INFO L413 NwaCegarLoop]: 40 mSDtfsCounter, 107 mSDsluCounter, 596 mSDsCounter, 0 mSdLazyCounter, 322 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 107 SdHoareTripleChecker+Valid, 636 SdHoareTripleChecker+Invalid, 501 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 322 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 170 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-11-16 11:34:55,137 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [107 Valid, 636 Invalid, 501 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 322 Invalid, 0 Unknown, 170 Unchecked, 1.4s Time] [2022-11-16 11:34:55,138 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 827 states. [2022-11-16 11:34:55,142 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 827 to 812. [2022-11-16 11:34:55,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 812 states, 810 states have (on average 1.2123456790123457) internal successors, (982), 811 states have internal predecessors, (982), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:34:55,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 812 states to 812 states and 982 transitions. [2022-11-16 11:34:55,144 INFO L78 Accepts]: Start accepts. Automaton has 812 states and 982 transitions. Word has length 68 [2022-11-16 11:34:55,144 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:34:55,144 INFO L495 AbstractCegarLoop]: Abstraction has 812 states and 982 transitions. [2022-11-16 11:34:55,144 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 4.8076923076923075) internal successors, (125), 26 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:34:55,144 INFO L276 IsEmpty]: Start isEmpty. Operand 812 states and 982 transitions. [2022-11-16 11:34:55,145 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-11-16 11:34:55,145 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:34:55,145 INFO L195 NwaCegarLoop]: trace histogram [8, 6, 5, 5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:34:55,156 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c04a0f81-8b6c-4bc8-9c3a-7f4603344bba/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 (50)] Ended with exit code 0 [2022-11-16 11:34:55,345 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 50 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c04a0f81-8b6c-4bc8-9c3a-7f4603344bba/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 11:34:55,345 INFO L420 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2022-11-16 11:34:55,346 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:34:55,346 INFO L85 PathProgramCache]: Analyzing trace with hash 354433678, now seen corresponding path program 6 times [2022-11-16 11:34:55,346 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 11:34:55,346 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1279874223] [2022-11-16 11:34:55,346 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-11-16 11:34:55,346 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 11:34:55,346 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c04a0f81-8b6c-4bc8-9c3a-7f4603344bba/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 11:34:55,347 INFO L229 MonitoredProcess]: Starting monitored process 51 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c04a0f81-8b6c-4bc8-9c3a-7f4603344bba/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 11:34:55,349 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c04a0f81-8b6c-4bc8-9c3a-7f4603344bba/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 (51)] Waiting until timeout for monitored process [2022-11-16 11:34:55,671 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 8 check-sat command(s) [2022-11-16 11:34:55,671 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 11:34:55,681 INFO L263 TraceCheckSpWp]: Trace formula consists of 211 conjuncts, 23 conjunts are in the unsatisfiable core [2022-11-16 11:34:55,683 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:34:55,695 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 8 treesize of output 7 [2022-11-16 11:34:56,849 INFO L134 CoverageAnalysis]: Checked inductivity of 133 backedges. 45 proven. 79 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-11-16 11:34:56,849 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:35:00,723 INFO L134 CoverageAnalysis]: Checked inductivity of 133 backedges. 1 proven. 127 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-16 11:35:00,723 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 11:35:00,724 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1279874223] [2022-11-16 11:35:00,724 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1279874223] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 11:35:00,724 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-16 11:35:00,724 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 14] total 25 [2022-11-16 11:35:00,724 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1634635850] [2022-11-16 11:35:00,724 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-16 11:35:00,724 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-11-16 11:35:00,725 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 11:35:00,725 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-11-16 11:35:00,725 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=514, Unknown=0, NotChecked=0, Total=600 [2022-11-16 11:35:00,725 INFO L87 Difference]: Start difference. First operand 812 states and 982 transitions. Second operand has 25 states, 25 states have (on average 5.08) internal successors, (127), 25 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:35:04,768 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:35:04,769 INFO L93 Difference]: Finished difference Result 832 states and 1002 transitions. [2022-11-16 11:35:04,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-11-16 11:35:04,771 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 5.08) internal successors, (127), 25 states have internal predecessors, (127), 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 68 [2022-11-16 11:35:04,771 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:35:04,772 INFO L225 Difference]: With dead ends: 832 [2022-11-16 11:35:04,772 INFO L226 Difference]: Without dead ends: 831 [2022-11-16 11:35:04,773 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 111 SyntacticMatches, 1 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 165 ImplicationChecksByTransitivity, 4.4s TimeCoverageRelationStatistics Valid=136, Invalid=856, Unknown=0, NotChecked=0, Total=992 [2022-11-16 11:35:04,773 INFO L413 NwaCegarLoop]: 39 mSDtfsCounter, 73 mSDsluCounter, 460 mSDsCounter, 0 mSdLazyCounter, 264 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 73 SdHoareTripleChecker+Valid, 499 SdHoareTripleChecker+Invalid, 286 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 264 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 13 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2022-11-16 11:35:04,773 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [73 Valid, 499 Invalid, 286 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 264 Invalid, 0 Unknown, 13 Unchecked, 2.3s Time] [2022-11-16 11:35:04,774 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 831 states. [2022-11-16 11:35:04,780 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 831 to 805. [2022-11-16 11:35:04,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 805 states, 803 states have (on average 1.215442092154421) internal successors, (976), 804 states have internal predecessors, (976), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:35:04,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 805 states to 805 states and 976 transitions. [2022-11-16 11:35:04,782 INFO L78 Accepts]: Start accepts. Automaton has 805 states and 976 transitions. Word has length 68 [2022-11-16 11:35:04,782 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:35:04,782 INFO L495 AbstractCegarLoop]: Abstraction has 805 states and 976 transitions. [2022-11-16 11:35:04,782 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 5.08) internal successors, (127), 25 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:35:04,782 INFO L276 IsEmpty]: Start isEmpty. Operand 805 states and 976 transitions. [2022-11-16 11:35:04,783 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-11-16 11:35:04,783 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:35:04,784 INFO L195 NwaCegarLoop]: trace histogram [7, 6, 6, 5, 5, 5, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:35:04,793 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c04a0f81-8b6c-4bc8-9c3a-7f4603344bba/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 (51)] Ended with exit code 0 [2022-11-16 11:35:04,984 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 51 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c04a0f81-8b6c-4bc8-9c3a-7f4603344bba/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 11:35:04,985 INFO L420 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2022-11-16 11:35:04,985 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:35:04,985 INFO L85 PathProgramCache]: Analyzing trace with hash -2112417202, now seen corresponding path program 12 times [2022-11-16 11:35:04,985 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 11:35:04,986 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [565294373] [2022-11-16 11:35:04,986 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-11-16 11:35:04,986 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 11:35:04,986 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c04a0f81-8b6c-4bc8-9c3a-7f4603344bba/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 11:35:04,987 INFO L229 MonitoredProcess]: Starting monitored process 52 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c04a0f81-8b6c-4bc8-9c3a-7f4603344bba/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 11:35:04,988 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c04a0f81-8b6c-4bc8-9c3a-7f4603344bba/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 (52)] Waiting until timeout for monitored process [2022-11-16 11:35:05,283 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 8 check-sat command(s) [2022-11-16 11:35:05,284 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 11:35:05,294 INFO L263 TraceCheckSpWp]: Trace formula consists of 211 conjuncts, 23 conjunts are in the unsatisfiable core [2022-11-16 11:35:05,295 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:35:05,309 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 8 treesize of output 7 [2022-11-16 11:35:06,448 INFO L134 CoverageAnalysis]: Checked inductivity of 122 backedges. 45 proven. 67 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-11-16 11:35:06,448 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:35:10,373 INFO L134 CoverageAnalysis]: Checked inductivity of 122 backedges. 0 proven. 116 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-16 11:35:10,374 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 11:35:10,374 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [565294373] [2022-11-16 11:35:10,374 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [565294373] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 11:35:10,374 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-16 11:35:10,374 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 14] total 25 [2022-11-16 11:35:10,374 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1121128655] [2022-11-16 11:35:10,374 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-16 11:35:10,375 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-11-16 11:35:10,375 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 11:35:10,375 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-11-16 11:35:10,375 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=514, Unknown=0, NotChecked=0, Total=600 [2022-11-16 11:35:10,375 INFO L87 Difference]: Start difference. First operand 805 states and 976 transitions. Second operand has 25 states, 25 states have (on average 5.0) internal successors, (125), 25 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:35:14,773 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:35:14,773 INFO L93 Difference]: Finished difference Result 819 states and 984 transitions. [2022-11-16 11:35:14,775 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2022-11-16 11:35:14,775 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 5.0) internal successors, (125), 25 states have internal predecessors, (125), 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 68 [2022-11-16 11:35:14,776 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:35:14,778 INFO L225 Difference]: With dead ends: 819 [2022-11-16 11:35:14,778 INFO L226 Difference]: Without dead ends: 812 [2022-11-16 11:35:14,779 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 146 GetRequests, 113 SyntacticMatches, 2 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 177 ImplicationChecksByTransitivity, 4.7s TimeCoverageRelationStatistics Valid=141, Invalid=915, Unknown=0, NotChecked=0, Total=1056 [2022-11-16 11:35:14,779 INFO L413 NwaCegarLoop]: 38 mSDtfsCounter, 106 mSDsluCounter, 411 mSDsCounter, 0 mSdLazyCounter, 231 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 106 SdHoareTripleChecker+Valid, 449 SdHoareTripleChecker+Invalid, 251 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 231 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 11 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2022-11-16 11:35:14,779 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [106 Valid, 449 Invalid, 251 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 231 Invalid, 0 Unknown, 11 Unchecked, 2.3s Time] [2022-11-16 11:35:14,780 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 812 states. [2022-11-16 11:35:14,790 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 812 to 784. [2022-11-16 11:35:14,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 784 states, 782 states have (on average 1.2148337595907928) internal successors, (950), 783 states have internal predecessors, (950), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:35:14,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 784 states to 784 states and 950 transitions. [2022-11-16 11:35:14,792 INFO L78 Accepts]: Start accepts. Automaton has 784 states and 950 transitions. Word has length 68 [2022-11-16 11:35:14,793 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:35:14,793 INFO L495 AbstractCegarLoop]: Abstraction has 784 states and 950 transitions. [2022-11-16 11:35:14,793 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 5.0) internal successors, (125), 25 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:35:14,793 INFO L276 IsEmpty]: Start isEmpty. Operand 784 states and 950 transitions. [2022-11-16 11:35:14,794 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-11-16 11:35:14,794 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:35:14,794 INFO L195 NwaCegarLoop]: trace histogram [8, 6, 5, 5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:35:14,808 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c04a0f81-8b6c-4bc8-9c3a-7f4603344bba/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 (52)] Forceful destruction successful, exit code 0 [2022-11-16 11:35:15,007 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 52 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c04a0f81-8b6c-4bc8-9c3a-7f4603344bba/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 11:35:15,008 INFO L420 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2022-11-16 11:35:15,008 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:35:15,008 INFO L85 PathProgramCache]: Analyzing trace with hash -885091506, now seen corresponding path program 7 times [2022-11-16 11:35:15,008 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 11:35:15,008 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [575470108] [2022-11-16 11:35:15,009 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-11-16 11:35:15,009 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 11:35:15,009 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c04a0f81-8b6c-4bc8-9c3a-7f4603344bba/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 11:35:15,009 INFO L229 MonitoredProcess]: Starting monitored process 53 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c04a0f81-8b6c-4bc8-9c3a-7f4603344bba/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 11:35:15,011 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c04a0f81-8b6c-4bc8-9c3a-7f4603344bba/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 (53)] Waiting until timeout for monitored process [2022-11-16 11:35:15,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:35:15,205 INFO L263 TraceCheckSpWp]: Trace formula consists of 211 conjuncts, 23 conjunts are in the unsatisfiable core [2022-11-16 11:35:15,206 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:35:15,218 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 8 treesize of output 7 [2022-11-16 11:35:16,402 INFO L134 CoverageAnalysis]: Checked inductivity of 133 backedges. 45 proven. 78 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-11-16 11:35:16,402 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:35:20,300 INFO L134 CoverageAnalysis]: Checked inductivity of 133 backedges. 0 proven. 127 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-16 11:35:20,300 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 11:35:20,300 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [575470108] [2022-11-16 11:35:20,301 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [575470108] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 11:35:20,301 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-16 11:35:20,301 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 14] total 25 [2022-11-16 11:35:20,301 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [51877648] [2022-11-16 11:35:20,301 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-16 11:35:20,302 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-11-16 11:35:20,302 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 11:35:20,302 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-11-16 11:35:20,302 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=514, Unknown=0, NotChecked=0, Total=600 [2022-11-16 11:35:20,302 INFO L87 Difference]: Start difference. First operand 784 states and 950 transitions. Second operand has 25 states, 25 states have (on average 5.0) internal successors, (125), 25 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:35:21,712 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:35:21,712 INFO L93 Difference]: Finished difference Result 719 states and 862 transitions. [2022-11-16 11:35:21,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-16 11:35:21,714 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 5.0) internal successors, (125), 25 states have internal predecessors, (125), 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 68 [2022-11-16 11:35:21,714 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:35:21,715 INFO L225 Difference]: With dead ends: 719 [2022-11-16 11:35:21,715 INFO L226 Difference]: Without dead ends: 718 [2022-11-16 11:35:21,716 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 136 GetRequests, 111 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 116 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=107, Invalid=595, Unknown=0, NotChecked=0, Total=702 [2022-11-16 11:35:21,716 INFO L413 NwaCegarLoop]: 33 mSDtfsCounter, 80 mSDsluCounter, 377 mSDsCounter, 0 mSdLazyCounter, 232 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 80 SdHoareTripleChecker+Valid, 410 SdHoareTripleChecker+Invalid, 250 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 232 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 10 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-11-16 11:35:21,716 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [80 Valid, 410 Invalid, 250 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 232 Invalid, 0 Unknown, 10 Unchecked, 1.1s Time] [2022-11-16 11:35:21,717 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 718 states. [2022-11-16 11:35:21,721 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 718 to 710. [2022-11-16 11:35:21,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 710 states, 708 states have (on average 1.2048022598870056) internal successors, (853), 709 states have internal predecessors, (853), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:35:21,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 710 states to 710 states and 853 transitions. [2022-11-16 11:35:21,723 INFO L78 Accepts]: Start accepts. Automaton has 710 states and 853 transitions. Word has length 68 [2022-11-16 11:35:21,723 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:35:21,723 INFO L495 AbstractCegarLoop]: Abstraction has 710 states and 853 transitions. [2022-11-16 11:35:21,723 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 5.0) internal successors, (125), 25 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:35:21,723 INFO L276 IsEmpty]: Start isEmpty. Operand 710 states and 853 transitions. [2022-11-16 11:35:21,723 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-11-16 11:35:21,724 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:35:21,724 INFO L195 NwaCegarLoop]: trace histogram [7, 6, 6, 5, 5, 5, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:35:21,733 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c04a0f81-8b6c-4bc8-9c3a-7f4603344bba/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 (53)] Ended with exit code 0 [2022-11-16 11:35:21,924 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 53 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c04a0f81-8b6c-4bc8-9c3a-7f4603344bba/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 11:35:21,924 INFO L420 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2022-11-16 11:35:21,925 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:35:21,925 INFO L85 PathProgramCache]: Analyzing trace with hash 896498190, now seen corresponding path program 13 times [2022-11-16 11:35:21,925 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 11:35:21,925 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [60553274] [2022-11-16 11:35:21,925 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-11-16 11:35:21,925 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 11:35:21,925 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c04a0f81-8b6c-4bc8-9c3a-7f4603344bba/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 11:35:21,926 INFO L229 MonitoredProcess]: Starting monitored process 54 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c04a0f81-8b6c-4bc8-9c3a-7f4603344bba/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 11:35:21,957 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c04a0f81-8b6c-4bc8-9c3a-7f4603344bba/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 (54)] Waiting until timeout for monitored process [2022-11-16 11:35:22,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:35:22,139 INFO L263 TraceCheckSpWp]: Trace formula consists of 211 conjuncts, 23 conjunts are in the unsatisfiable core [2022-11-16 11:35:22,142 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:35:22,163 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 8 treesize of output 7 [2022-11-16 11:35:23,366 INFO L134 CoverageAnalysis]: Checked inductivity of 123 backedges. 45 proven. 68 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-11-16 11:35:23,366 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:35:27,420 INFO L134 CoverageAnalysis]: Checked inductivity of 123 backedges. 0 proven. 117 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-16 11:35:27,420 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 11:35:27,421 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [60553274] [2022-11-16 11:35:27,421 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [60553274] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 11:35:27,421 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-16 11:35:27,421 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 14] total 25 [2022-11-16 11:35:27,421 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [278608427] [2022-11-16 11:35:27,421 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-16 11:35:27,421 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-11-16 11:35:27,421 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 11:35:27,422 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-11-16 11:35:27,422 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=514, Unknown=0, NotChecked=0, Total=600 [2022-11-16 11:35:27,422 INFO L87 Difference]: Start difference. First operand 710 states and 853 transitions. Second operand has 25 states, 25 states have (on average 5.0) internal successors, (125), 25 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:35:29,876 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:35:29,876 INFO L93 Difference]: Finished difference Result 766 states and 914 transitions. [2022-11-16 11:35:29,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-11-16 11:35:29,878 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 5.0) internal successors, (125), 25 states have internal predecessors, (125), 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 68 [2022-11-16 11:35:29,878 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:35:29,880 INFO L225 Difference]: With dead ends: 766 [2022-11-16 11:35:29,880 INFO L226 Difference]: Without dead ends: 759 [2022-11-16 11:35:29,881 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 112 SyntacticMatches, 1 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 137 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=123, Invalid=747, Unknown=0, NotChecked=0, Total=870 [2022-11-16 11:35:29,881 INFO L413 NwaCegarLoop]: 37 mSDtfsCounter, 95 mSDsluCounter, 418 mSDsCounter, 0 mSdLazyCounter, 277 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 95 SdHoareTripleChecker+Valid, 455 SdHoareTripleChecker+Invalid, 335 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 277 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 49 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-11-16 11:35:29,882 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [95 Valid, 455 Invalid, 335 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 277 Invalid, 0 Unknown, 49 Unchecked, 1.6s Time] [2022-11-16 11:35:29,882 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 759 states. [2022-11-16 11:35:29,889 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 759 to 745. [2022-11-16 11:35:29,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 745 states, 743 states have (on average 1.2045760430686407) internal successors, (895), 744 states have internal predecessors, (895), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:35:29,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 745 states to 745 states and 895 transitions. [2022-11-16 11:35:29,891 INFO L78 Accepts]: Start accepts. Automaton has 745 states and 895 transitions. Word has length 68 [2022-11-16 11:35:29,891 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:35:29,892 INFO L495 AbstractCegarLoop]: Abstraction has 745 states and 895 transitions. [2022-11-16 11:35:29,892 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 5.0) internal successors, (125), 25 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:35:29,892 INFO L276 IsEmpty]: Start isEmpty. Operand 745 states and 895 transitions. [2022-11-16 11:35:29,893 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-11-16 11:35:29,893 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:35:29,893 INFO L195 NwaCegarLoop]: trace histogram [7, 6, 6, 5, 5, 5, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:35:29,902 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c04a0f81-8b6c-4bc8-9c3a-7f4603344bba/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 (54)] Ended with exit code 0 [2022-11-16 11:35:30,098 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 54 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c04a0f81-8b6c-4bc8-9c3a-7f4603344bba/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 11:35:30,098 INFO L420 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2022-11-16 11:35:30,098 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:35:30,099 INFO L85 PathProgramCache]: Analyzing trace with hash 2123823886, now seen corresponding path program 14 times [2022-11-16 11:35:30,099 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 11:35:30,099 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1905519647] [2022-11-16 11:35:30,099 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-16 11:35:30,099 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 11:35:30,099 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c04a0f81-8b6c-4bc8-9c3a-7f4603344bba/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 11:35:30,100 INFO L229 MonitoredProcess]: Starting monitored process 55 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c04a0f81-8b6c-4bc8-9c3a-7f4603344bba/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 11:35:30,101 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c04a0f81-8b6c-4bc8-9c3a-7f4603344bba/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 (55)] Waiting until timeout for monitored process [2022-11-16 11:35:30,269 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-16 11:35:30,269 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 11:35:30,276 INFO L263 TraceCheckSpWp]: Trace formula consists of 211 conjuncts, 23 conjunts are in the unsatisfiable core [2022-11-16 11:35:30,278 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:35:30,292 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 8 treesize of output 7 [2022-11-16 11:35:31,495 INFO L134 CoverageAnalysis]: Checked inductivity of 122 backedges. 45 proven. 67 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-11-16 11:35:31,496 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:35:35,533 INFO L134 CoverageAnalysis]: Checked inductivity of 122 backedges. 0 proven. 116 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-16 11:35:35,533 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 11:35:35,533 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1905519647] [2022-11-16 11:35:35,533 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1905519647] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 11:35:35,533 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-16 11:35:35,533 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 14] total 25 [2022-11-16 11:35:35,534 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2109556753] [2022-11-16 11:35:35,534 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-16 11:35:35,534 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-11-16 11:35:35,534 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 11:35:35,534 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-11-16 11:35:35,535 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=514, Unknown=0, NotChecked=0, Total=600 [2022-11-16 11:35:35,535 INFO L87 Difference]: Start difference. First operand 745 states and 895 transitions. Second operand has 25 states, 25 states have (on average 5.0) internal successors, (125), 25 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:35:37,752 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:35:37,752 INFO L93 Difference]: Finished difference Result 779 states and 932 transitions. [2022-11-16 11:35:37,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-11-16 11:35:37,754 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 5.0) internal successors, (125), 25 states have internal predecessors, (125), 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 68 [2022-11-16 11:35:37,755 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:35:37,757 INFO L225 Difference]: With dead ends: 779 [2022-11-16 11:35:37,757 INFO L226 Difference]: Without dead ends: 778 [2022-11-16 11:35:37,757 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 138 GetRequests, 111 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 129 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=118, Invalid=694, Unknown=0, NotChecked=0, Total=812 [2022-11-16 11:35:37,758 INFO L413 NwaCegarLoop]: 39 mSDtfsCounter, 65 mSDsluCounter, 436 mSDsCounter, 0 mSdLazyCounter, 260 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 65 SdHoareTripleChecker+Valid, 475 SdHoareTripleChecker+Invalid, 323 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 260 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 55 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-11-16 11:35:37,758 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [65 Valid, 475 Invalid, 323 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 260 Invalid, 0 Unknown, 55 Unchecked, 1.6s Time] [2022-11-16 11:35:37,759 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 778 states. [2022-11-16 11:35:37,766 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 778 to 755. [2022-11-16 11:35:37,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 755 states, 753 states have (on average 1.204515272244356) internal successors, (907), 754 states have internal predecessors, (907), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:35:37,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 755 states to 755 states and 907 transitions. [2022-11-16 11:35:37,768 INFO L78 Accepts]: Start accepts. Automaton has 755 states and 907 transitions. Word has length 68 [2022-11-16 11:35:37,769 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:35:37,769 INFO L495 AbstractCegarLoop]: Abstraction has 755 states and 907 transitions. [2022-11-16 11:35:37,769 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 5.0) internal successors, (125), 25 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:35:37,769 INFO L276 IsEmpty]: Start isEmpty. Operand 755 states and 907 transitions. [2022-11-16 11:35:37,770 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-11-16 11:35:37,770 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:35:37,770 INFO L195 NwaCegarLoop]: trace histogram [7, 6, 6, 5, 5, 5, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:35:37,782 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c04a0f81-8b6c-4bc8-9c3a-7f4603344bba/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 (55)] Ended with exit code 0 [2022-11-16 11:35:37,970 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 55 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c04a0f81-8b6c-4bc8-9c3a-7f4603344bba/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 11:35:37,971 INFO L420 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2022-11-16 11:35:37,971 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:35:37,971 INFO L85 PathProgramCache]: Analyzing trace with hash 632463694, now seen corresponding path program 15 times [2022-11-16 11:35:37,971 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 11:35:37,971 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2146249155] [2022-11-16 11:35:37,971 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-16 11:35:37,971 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 11:35:37,972 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c04a0f81-8b6c-4bc8-9c3a-7f4603344bba/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 11:35:37,972 INFO L229 MonitoredProcess]: Starting monitored process 56 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c04a0f81-8b6c-4bc8-9c3a-7f4603344bba/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 11:35:37,974 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c04a0f81-8b6c-4bc8-9c3a-7f4603344bba/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 (56)] Waiting until timeout for monitored process [2022-11-16 11:35:38,282 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2022-11-16 11:35:38,283 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 11:35:38,291 INFO L263 TraceCheckSpWp]: Trace formula consists of 197 conjuncts, 24 conjunts are in the unsatisfiable core [2022-11-16 11:35:38,296 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:35:38,312 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 8 treesize of output 7 [2022-11-16 11:35:41,276 INFO L134 CoverageAnalysis]: Checked inductivity of 123 backedges. 96 proven. 17 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-11-16 11:35:41,277 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:35:47,354 INFO L134 CoverageAnalysis]: Checked inductivity of 123 backedges. 52 proven. 61 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-11-16 11:35:47,354 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 11:35:47,355 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2146249155] [2022-11-16 11:35:47,355 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2146249155] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 11:35:47,355 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-16 11:35:47,355 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 28 [2022-11-16 11:35:47,355 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [364679718] [2022-11-16 11:35:47,355 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-16 11:35:47,355 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-11-16 11:35:47,356 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 11:35:47,356 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-11-16 11:35:47,356 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=137, Invalid=619, Unknown=0, NotChecked=0, Total=756 [2022-11-16 11:35:47,356 INFO L87 Difference]: Start difference. First operand 755 states and 907 transitions. Second operand has 28 states, 28 states have (on average 4.214285714285714) internal successors, (118), 28 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:35:47,815 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:35:47,815 INFO L93 Difference]: Finished difference Result 729 states and 854 transitions. [2022-11-16 11:35:47,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-16 11:35:47,817 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 4.214285714285714) internal successors, (118), 28 states have internal predecessors, (118), 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 68 [2022-11-16 11:35:47,817 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:35:47,819 INFO L225 Difference]: With dead ends: 729 [2022-11-16 11:35:47,819 INFO L226 Difference]: Without dead ends: 651 [2022-11-16 11:35:47,819 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 136 GetRequests, 108 SyntacticMatches, 1 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 261 ImplicationChecksByTransitivity, 4.3s TimeCoverageRelationStatistics Valid=148, Invalid=664, Unknown=0, NotChecked=0, Total=812 [2022-11-16 11:35:47,820 INFO L413 NwaCegarLoop]: 32 mSDtfsCounter, 78 mSDsluCounter, 265 mSDsCounter, 0 mSdLazyCounter, 78 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 78 SdHoareTripleChecker+Valid, 297 SdHoareTripleChecker+Invalid, 259 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 78 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 181 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-16 11:35:47,820 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [78 Valid, 297 Invalid, 259 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 78 Invalid, 0 Unknown, 181 Unchecked, 0.3s Time] [2022-11-16 11:35:47,821 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 651 states. [2022-11-16 11:35:47,826 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 651 to 592. [2022-11-16 11:35:47,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 592 states, 590 states have (on average 1.188135593220339) internal successors, (701), 591 states have internal predecessors, (701), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:35:47,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 592 states to 592 states and 701 transitions. [2022-11-16 11:35:47,828 INFO L78 Accepts]: Start accepts. Automaton has 592 states and 701 transitions. Word has length 68 [2022-11-16 11:35:47,828 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:35:47,828 INFO L495 AbstractCegarLoop]: Abstraction has 592 states and 701 transitions. [2022-11-16 11:35:47,828 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 4.214285714285714) internal successors, (118), 28 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:35:47,829 INFO L276 IsEmpty]: Start isEmpty. Operand 592 states and 701 transitions. [2022-11-16 11:35:47,829 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-11-16 11:35:47,829 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:35:47,829 INFO L195 NwaCegarLoop]: trace histogram [7, 6, 6, 5, 5, 5, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:35:47,847 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c04a0f81-8b6c-4bc8-9c3a-7f4603344bba/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 (56)] Forceful destruction successful, exit code 0 [2022-11-16 11:35:48,042 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 56 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c04a0f81-8b6c-4bc8-9c3a-7f4603344bba/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 11:35:48,042 INFO L420 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2022-11-16 11:35:48,043 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:35:48,043 INFO L85 PathProgramCache]: Analyzing trace with hash -776771058, now seen corresponding path program 16 times [2022-11-16 11:35:48,043 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 11:35:48,043 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1480621647] [2022-11-16 11:35:48,043 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-16 11:35:48,043 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 11:35:48,043 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c04a0f81-8b6c-4bc8-9c3a-7f4603344bba/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 11:35:48,044 INFO L229 MonitoredProcess]: Starting monitored process 57 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c04a0f81-8b6c-4bc8-9c3a-7f4603344bba/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 11:35:48,045 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c04a0f81-8b6c-4bc8-9c3a-7f4603344bba/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 (57)] Waiting until timeout for monitored process [2022-11-16 11:35:48,209 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-16 11:35:48,209 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 11:35:48,216 INFO L263 TraceCheckSpWp]: Trace formula consists of 211 conjuncts, 23 conjunts are in the unsatisfiable core [2022-11-16 11:35:48,218 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:35:48,235 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 8 treesize of output 7 [2022-11-16 11:35:49,565 INFO L134 CoverageAnalysis]: Checked inductivity of 123 backedges. 45 proven. 69 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-11-16 11:35:49,565 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:35:53,844 INFO L134 CoverageAnalysis]: Checked inductivity of 123 backedges. 1 proven. 117 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-16 11:35:53,844 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 11:35:53,845 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1480621647] [2022-11-16 11:35:53,845 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1480621647] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 11:35:53,845 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-16 11:35:53,845 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 14] total 25 [2022-11-16 11:35:53,845 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1130532267] [2022-11-16 11:35:53,845 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-16 11:35:53,846 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-11-16 11:35:53,846 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 11:35:53,846 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-11-16 11:35:53,847 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=514, Unknown=0, NotChecked=0, Total=600 [2022-11-16 11:35:53,847 INFO L87 Difference]: Start difference. First operand 592 states and 701 transitions. Second operand has 25 states, 25 states have (on average 5.08) internal successors, (127), 25 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:35:58,658 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:35:58,658 INFO L93 Difference]: Finished difference Result 663 states and 780 transitions. [2022-11-16 11:35:58,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2022-11-16 11:35:58,661 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 5.08) internal successors, (127), 25 states have internal predecessors, (127), 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 68 [2022-11-16 11:35:58,661 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:35:58,663 INFO L225 Difference]: With dead ends: 663 [2022-11-16 11:35:58,663 INFO L226 Difference]: Without dead ends: 655 [2022-11-16 11:35:58,663 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 143 GetRequests, 111 SyntacticMatches, 1 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 176 ImplicationChecksByTransitivity, 4.9s TimeCoverageRelationStatistics Valid=141, Invalid=915, Unknown=0, NotChecked=0, Total=1056 [2022-11-16 11:35:58,664 INFO L413 NwaCegarLoop]: 38 mSDtfsCounter, 69 mSDsluCounter, 508 mSDsCounter, 0 mSdLazyCounter, 280 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 69 SdHoareTripleChecker+Valid, 546 SdHoareTripleChecker+Invalid, 300 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 280 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 10 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2022-11-16 11:35:58,664 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [69 Valid, 546 Invalid, 300 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 280 Invalid, 0 Unknown, 10 Unchecked, 2.7s Time] [2022-11-16 11:35:58,665 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 655 states. [2022-11-16 11:35:58,671 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 655 to 618. [2022-11-16 11:35:58,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 618 states, 616 states have (on average 1.1948051948051948) internal successors, (736), 617 states have internal predecessors, (736), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:35:58,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 618 states to 618 states and 736 transitions. [2022-11-16 11:35:58,673 INFO L78 Accepts]: Start accepts. Automaton has 618 states and 736 transitions. Word has length 68 [2022-11-16 11:35:58,673 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:35:58,674 INFO L495 AbstractCegarLoop]: Abstraction has 618 states and 736 transitions. [2022-11-16 11:35:58,674 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 5.08) internal successors, (127), 25 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:35:58,674 INFO L276 IsEmpty]: Start isEmpty. Operand 618 states and 736 transitions. [2022-11-16 11:35:58,675 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-11-16 11:35:58,675 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:35:58,675 INFO L195 NwaCegarLoop]: trace histogram [8, 6, 5, 5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:35:58,694 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c04a0f81-8b6c-4bc8-9c3a-7f4603344bba/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 (57)] Forceful destruction successful, exit code 0 [2022-11-16 11:35:58,889 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 57 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c04a0f81-8b6c-4bc8-9c3a-7f4603344bba/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 11:35:58,890 INFO L420 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2022-11-16 11:35:58,890 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:35:58,890 INFO L85 PathProgramCache]: Analyzing trace with hash -323499378, now seen corresponding path program 7 times [2022-11-16 11:35:58,891 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 11:35:58,891 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1864522306] [2022-11-16 11:35:58,891 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-11-16 11:35:58,891 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 11:35:58,891 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c04a0f81-8b6c-4bc8-9c3a-7f4603344bba/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 11:35:58,893 INFO L229 MonitoredProcess]: Starting monitored process 58 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c04a0f81-8b6c-4bc8-9c3a-7f4603344bba/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 11:35:58,934 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c04a0f81-8b6c-4bc8-9c3a-7f4603344bba/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 (58)] Waiting until timeout for monitored process [2022-11-16 11:35:59,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:35:59,122 INFO L263 TraceCheckSpWp]: Trace formula consists of 211 conjuncts, 23 conjunts are in the unsatisfiable core [2022-11-16 11:35:59,124 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:35:59,140 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 8 treesize of output 7 [2022-11-16 11:36:00,587 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 45 proven. 81 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-11-16 11:36:00,587 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:36:04,838 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 0 proven. 130 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-16 11:36:04,838 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 11:36:04,838 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1864522306] [2022-11-16 11:36:04,838 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1864522306] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 11:36:04,839 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-16 11:36:04,839 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 14] total 25 [2022-11-16 11:36:04,839 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [537100899] [2022-11-16 11:36:04,839 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-16 11:36:04,840 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-11-16 11:36:04,840 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 11:36:04,840 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-11-16 11:36:04,840 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=514, Unknown=0, NotChecked=0, Total=600 [2022-11-16 11:36:04,840 INFO L87 Difference]: Start difference. First operand 618 states and 736 transitions. Second operand has 25 states, 25 states have (on average 5.0) internal successors, (125), 25 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:36:13,226 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:36:13,226 INFO L93 Difference]: Finished difference Result 707 states and 830 transitions. [2022-11-16 11:36:13,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-11-16 11:36:13,228 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 5.0) internal successors, (125), 25 states have internal predecessors, (125), 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 68 [2022-11-16 11:36:13,228 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:36:13,229 INFO L225 Difference]: With dead ends: 707 [2022-11-16 11:36:13,229 INFO L226 Difference]: Without dead ends: 697 [2022-11-16 11:36:13,229 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 153 GetRequests, 115 SyntacticMatches, 3 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 257 ImplicationChecksByTransitivity, 7.2s TimeCoverageRelationStatistics Valid=176, Invalid=1156, Unknown=0, NotChecked=0, Total=1332 [2022-11-16 11:36:13,230 INFO L413 NwaCegarLoop]: 39 mSDtfsCounter, 81 mSDsluCounter, 546 mSDsCounter, 0 mSdLazyCounter, 266 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 81 SdHoareTripleChecker+Valid, 585 SdHoareTripleChecker+Invalid, 413 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 266 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 136 IncrementalHoareTripleChecker+Unchecked, 4.1s IncrementalHoareTripleChecker+Time [2022-11-16 11:36:13,230 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [81 Valid, 585 Invalid, 413 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 266 Invalid, 0 Unknown, 136 Unchecked, 4.1s Time] [2022-11-16 11:36:13,231 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 697 states. [2022-11-16 11:36:13,236 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 697 to 639. [2022-11-16 11:36:13,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 639 states, 637 states have (on average 1.194662480376766) internal successors, (761), 638 states have internal predecessors, (761), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:36:13,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 639 states to 639 states and 761 transitions. [2022-11-16 11:36:13,238 INFO L78 Accepts]: Start accepts. Automaton has 639 states and 761 transitions. Word has length 68 [2022-11-16 11:36:13,238 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:36:13,238 INFO L495 AbstractCegarLoop]: Abstraction has 639 states and 761 transitions. [2022-11-16 11:36:13,239 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 5.0) internal successors, (125), 25 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:36:13,239 INFO L276 IsEmpty]: Start isEmpty. Operand 639 states and 761 transitions. [2022-11-16 11:36:13,239 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-11-16 11:36:13,240 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:36:13,240 INFO L195 NwaCegarLoop]: trace histogram [8, 6, 6, 5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:36:13,253 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c04a0f81-8b6c-4bc8-9c3a-7f4603344bba/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 (58)] Forceful destruction successful, exit code 0 [2022-11-16 11:36:13,452 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 58 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c04a0f81-8b6c-4bc8-9c3a-7f4603344bba/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 11:36:13,453 INFO L420 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2022-11-16 11:36:13,453 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:36:13,453 INFO L85 PathProgramCache]: Analyzing trace with hash -1683631583, now seen corresponding path program 17 times [2022-11-16 11:36:13,454 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 11:36:13,454 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [725406034] [2022-11-16 11:36:13,454 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-11-16 11:36:13,454 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 11:36:13,454 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c04a0f81-8b6c-4bc8-9c3a-7f4603344bba/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 11:36:13,455 INFO L229 MonitoredProcess]: Starting monitored process 59 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c04a0f81-8b6c-4bc8-9c3a-7f4603344bba/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 11:36:13,456 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c04a0f81-8b6c-4bc8-9c3a-7f4603344bba/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 (59)] Waiting until timeout for monitored process [2022-11-16 11:36:13,986 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 8 check-sat command(s) [2022-11-16 11:36:13,986 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 11:36:13,997 INFO L263 TraceCheckSpWp]: Trace formula consists of 234 conjuncts, 26 conjunts are in the unsatisfiable core [2022-11-16 11:36:13,999 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:36:14,012 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 8 treesize of output 7 [2022-11-16 11:36:15,266 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 59 proven. 69 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-16 11:36:15,267 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:36:19,834 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 1 proven. 136 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-11-16 11:36:19,834 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 11:36:19,834 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [725406034] [2022-11-16 11:36:19,835 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [725406034] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 11:36:19,835 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-16 11:36:19,835 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 14] total 26 [2022-11-16 11:36:19,835 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1315728586] [2022-11-16 11:36:19,835 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-16 11:36:19,836 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-11-16 11:36:19,836 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 11:36:19,836 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-11-16 11:36:19,837 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=558, Unknown=0, NotChecked=0, Total=650 [2022-11-16 11:36:19,837 INFO L87 Difference]: Start difference. First operand 639 states and 761 transitions. Second operand has 26 states, 26 states have (on average 5.153846153846154) internal successors, (134), 26 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:36:21,684 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:36:21,684 INFO L93 Difference]: Finished difference Result 641 states and 762 transitions. [2022-11-16 11:36:21,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-11-16 11:36:21,685 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 5.153846153846154) internal successors, (134), 26 states have internal predecessors, (134), 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 74 [2022-11-16 11:36:21,686 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:36:21,686 INFO L225 Difference]: With dead ends: 641 [2022-11-16 11:36:21,686 INFO L226 Difference]: Without dead ends: 630 [2022-11-16 11:36:21,686 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 122 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 141 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=145, Invalid=725, Unknown=0, NotChecked=0, Total=870 [2022-11-16 11:36:21,687 INFO L413 NwaCegarLoop]: 31 mSDtfsCounter, 82 mSDsluCounter, 405 mSDsCounter, 0 mSdLazyCounter, 263 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 82 SdHoareTripleChecker+Valid, 436 SdHoareTripleChecker+Invalid, 304 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 263 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 31 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-11-16 11:36:21,687 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [82 Valid, 436 Invalid, 304 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 263 Invalid, 0 Unknown, 31 Unchecked, 1.2s Time] [2022-11-16 11:36:21,687 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 630 states. [2022-11-16 11:36:21,690 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 630 to 627. [2022-11-16 11:36:21,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 627 states, 625 states have (on average 1.1952) internal successors, (747), 626 states have internal predecessors, (747), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:36:21,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 627 states to 627 states and 747 transitions. [2022-11-16 11:36:21,691 INFO L78 Accepts]: Start accepts. Automaton has 627 states and 747 transitions. Word has length 74 [2022-11-16 11:36:21,692 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:36:21,692 INFO L495 AbstractCegarLoop]: Abstraction has 627 states and 747 transitions. [2022-11-16 11:36:21,692 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 5.153846153846154) internal successors, (134), 26 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:36:21,692 INFO L276 IsEmpty]: Start isEmpty. Operand 627 states and 747 transitions. [2022-11-16 11:36:21,692 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-11-16 11:36:21,692 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:36:21,692 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 6, 5, 5, 5, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:36:21,703 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c04a0f81-8b6c-4bc8-9c3a-7f4603344bba/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 (59)] Ended with exit code 0 [2022-11-16 11:36:21,893 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 59 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c04a0f81-8b6c-4bc8-9c3a-7f4603344bba/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 11:36:21,893 INFO L420 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2022-11-16 11:36:21,893 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:36:21,893 INFO L85 PathProgramCache]: Analyzing trace with hash -1371279071, now seen corresponding path program 18 times [2022-11-16 11:36:21,894 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 11:36:21,894 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [112889718] [2022-11-16 11:36:21,894 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-11-16 11:36:21,894 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 11:36:21,894 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c04a0f81-8b6c-4bc8-9c3a-7f4603344bba/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 11:36:21,895 INFO L229 MonitoredProcess]: Starting monitored process 60 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c04a0f81-8b6c-4bc8-9c3a-7f4603344bba/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 11:36:21,896 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c04a0f81-8b6c-4bc8-9c3a-7f4603344bba/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 (60)] Waiting until timeout for monitored process [2022-11-16 11:36:22,272 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2022-11-16 11:36:22,272 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 11:36:22,281 INFO L263 TraceCheckSpWp]: Trace formula consists of 220 conjuncts, 44 conjunts are in the unsatisfiable core [2022-11-16 11:36:22,285 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:36:22,307 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 8 treesize of output 7 [2022-11-16 11:36:24,108 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 172 treesize of output 75 [2022-11-16 11:36:26,272 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:36:26,277 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:36:26,280 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:36:26,286 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:36:26,289 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:36:26,292 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:36:26,294 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:36:26,297 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:36:26,300 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:36:26,306 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:36:26,309 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:36:26,316 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:36:26,551 INFO L321 Elim1Store]: treesize reduction 82, result has 55.2 percent of original size [2022-11-16 11:36:26,552 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 24 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 8 case distinctions, treesize of input 198 treesize of output 200 [2022-11-16 11:37:27,143 WARN L233 SmtUtils]: Spent 50.51s on a formula simplification. DAG size of input: 266 DAG size of output: 97 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-16 11:37:30,085 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:37:30,101 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:37:30,107 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:37:30,123 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:37:30,129 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:37:30,135 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:37:30,141 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:37:30,147 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:37:30,153 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:37:30,169 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:37:30,174 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:37:30,191 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:37:30,191 INFO L217 Elim1Store]: Index analysis took 111 ms [2022-11-16 11:37:30,369 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-16 11:37:30,369 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 24 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 4 case distinctions, treesize of input 380 treesize of output 274 [2022-11-16 11:38:06,988 WARN L233 SmtUtils]: Spent 23.51s on a formula simplification. DAG size of input: 181 DAG size of output: 104 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-16 11:38:08,819 INFO L134 CoverageAnalysis]: Checked inductivity of 139 backedges. 4 proven. 128 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-11-16 11:38:08,819 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:38:39,119 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 4497 treesize of output 3881 [2022-11-16 11:40:03,506 WARN L233 SmtUtils]: Spent 1.36m on a formula simplification. DAG size of input: 197 DAG size of output: 59 (called from [L 318] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2022-11-16 11:40:03,506 INFO L321 Elim1Store]: treesize reduction 504, result has 22.3 percent of original size [2022-11-16 11:40:03,606 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 12 select indices, 12 select index equivalence classes, 6 disjoint index pairs (out of 66 index pairs), introduced 12 new quantified variables, introduced 60 case distinctions, treesize of input 16868044855433 treesize of output 6764671162514