./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/ldv-memsafety/memleaks_test23_3.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_7a381edf-ab01-41b6-92bc-f9af652b83c9/bin/uautomizer-tPACEb0tL8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a381edf-ab01-41b6-92bc-f9af652b83c9/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_7a381edf-ab01-41b6-92bc-f9af652b83c9/bin/uautomizer-tPACEb0tL8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a381edf-ab01-41b6-92bc-f9af652b83c9/bin/uautomizer-tPACEb0tL8/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/ldv-memsafety/memleaks_test23_3.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a381edf-ab01-41b6-92bc-f9af652b83c9/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_7a381edf-ab01-41b6-92bc-f9af652b83c9/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 b04cfdc033f25419ae30b8c067b1e8de34cd963e91f12bceeafd05a3d125e0b7 --- 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 10:55:58,674 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-16 10:55:58,675 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-16 10:55:58,709 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-16 10:55:58,710 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-16 10:55:58,711 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-16 10:55:58,712 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-16 10:55:58,714 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-16 10:55:58,719 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-16 10:55:58,725 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-16 10:55:58,726 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-16 10:55:58,729 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-16 10:55:58,730 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-16 10:55:58,732 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-16 10:55:58,736 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-16 10:55:58,738 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-16 10:55:58,739 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-16 10:55:58,740 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-16 10:55:58,745 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-16 10:55:58,752 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-16 10:55:58,753 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-16 10:55:58,756 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-16 10:55:58,757 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-16 10:55:58,758 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-16 10:55:58,761 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-16 10:55:58,761 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-16 10:55:58,762 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-16 10:55:58,762 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-16 10:55:58,763 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-16 10:55:58,763 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-16 10:55:58,764 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-16 10:55:58,764 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-16 10:55:58,765 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-16 10:55:58,766 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-16 10:55:58,770 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-16 10:55:58,771 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-16 10:55:58,772 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-16 10:55:58,772 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-16 10:55:58,773 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-16 10:55:58,773 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-16 10:55:58,774 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-16 10:55:58,775 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a381edf-ab01-41b6-92bc-f9af652b83c9/bin/uautomizer-tPACEb0tL8/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2022-11-16 10:55:58,815 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-16 10:55:58,815 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-16 10:55:58,816 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-16 10:55:58,816 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-16 10:55:58,817 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-16 10:55:58,817 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-16 10:55:58,817 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-16 10:55:58,818 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-16 10:55:58,818 INFO L138 SettingsManager]: * Use SBE=true [2022-11-16 10:55:58,818 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-16 10:55:58,819 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-16 10:55:58,819 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-16 10:55:58,819 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-16 10:55:58,819 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-16 10:55:58,820 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-16 10:55:58,820 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-11-16 10:55:58,820 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-11-16 10:55:58,820 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-11-16 10:55:58,820 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-16 10:55:58,820 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-16 10:55:58,821 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-16 10:55:58,821 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-16 10:55:58,821 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-16 10:55:58,821 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-16 10:55:58,821 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-16 10:55:58,822 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 10:55:58,823 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-16 10:55:58,823 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-16 10:55:58,823 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-16 10:55:58,824 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-16 10:55:58,824 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_7a381edf-ab01-41b6-92bc-f9af652b83c9/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a381edf-ab01-41b6-92bc-f9af652b83c9/bin/uautomizer-tPACEb0tL8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b04cfdc033f25419ae30b8c067b1e8de34cd963e91f12bceeafd05a3d125e0b7 [2022-11-16 10:55:59,134 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-16 10:55:59,155 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-16 10:55:59,158 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-16 10:55:59,159 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-16 10:55:59,160 INFO L275 PluginConnector]: CDTParser initialized [2022-11-16 10:55:59,161 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a381edf-ab01-41b6-92bc-f9af652b83c9/bin/uautomizer-tPACEb0tL8/../../sv-benchmarks/c/ldv-memsafety/memleaks_test23_3.i [2022-11-16 10:55:59,236 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a381edf-ab01-41b6-92bc-f9af652b83c9/bin/uautomizer-tPACEb0tL8/data/bc283b0df/fe77b3a5c27a47bcb5378904070a8faa/FLAG80829a7ab [2022-11-16 10:55:59,781 INFO L306 CDTParser]: Found 1 translation units. [2022-11-16 10:55:59,782 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a381edf-ab01-41b6-92bc-f9af652b83c9/sv-benchmarks/c/ldv-memsafety/memleaks_test23_3.i [2022-11-16 10:55:59,796 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a381edf-ab01-41b6-92bc-f9af652b83c9/bin/uautomizer-tPACEb0tL8/data/bc283b0df/fe77b3a5c27a47bcb5378904070a8faa/FLAG80829a7ab [2022-11-16 10:56:00,089 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a381edf-ab01-41b6-92bc-f9af652b83c9/bin/uautomizer-tPACEb0tL8/data/bc283b0df/fe77b3a5c27a47bcb5378904070a8faa [2022-11-16 10:56:00,091 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-16 10:56:00,093 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-16 10:56:00,098 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-16 10:56:00,098 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-16 10:56:00,101 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-16 10:56:00,103 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 10:56:00" (1/1) ... [2022-11-16 10:56:00,104 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4d3fe579 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 10:56:00, skipping insertion in model container [2022-11-16 10:56:00,106 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 10:56:00" (1/1) ... [2022-11-16 10:56:00,113 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-16 10:56:00,170 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-16 10:56:00,646 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 10:56:00,661 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 10:56:00,661 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@6f536f03 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 10:56:00, skipping insertion in model container [2022-11-16 10:56:00,661 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-16 10:56:00,662 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2022-11-16 10:56:00,663 INFO L158 Benchmark]: Toolchain (without parser) took 569.82ms. Allocated memory is still 102.8MB. Free memory was 61.0MB in the beginning and 74.4MB in the end (delta: -13.3MB). Peak memory consumption was 4.6MB. Max. memory is 16.1GB. [2022-11-16 10:56:00,664 INFO L158 Benchmark]: CDTParser took 0.27ms. Allocated memory is still 102.8MB. Free memory is still 78.9MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-16 10:56:00,665 INFO L158 Benchmark]: CACSL2BoogieTranslator took 563.80ms. Allocated memory is still 102.8MB. Free memory was 60.8MB in the beginning and 74.4MB in the end (delta: -13.6MB). Peak memory consumption was 4.6MB. Max. memory is 16.1GB. [2022-11-16 10:56:00,666 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27ms. Allocated memory is still 102.8MB. Free memory is still 78.9MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 563.80ms. Allocated memory is still 102.8MB. Free memory was 60.8MB in the beginning and 74.4MB in the end (delta: -13.6MB). Peak memory consumption was 4.6MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 576]: 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_7a381edf-ab01-41b6-92bc-f9af652b83c9/bin/uautomizer-tPACEb0tL8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a381edf-ab01-41b6-92bc-f9af652b83c9/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_7a381edf-ab01-41b6-92bc-f9af652b83c9/bin/uautomizer-tPACEb0tL8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a381edf-ab01-41b6-92bc-f9af652b83c9/bin/uautomizer-tPACEb0tL8/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/ldv-memsafety/memleaks_test23_3.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a381edf-ab01-41b6-92bc-f9af652b83c9/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_7a381edf-ab01-41b6-92bc-f9af652b83c9/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 b04cfdc033f25419ae30b8c067b1e8de34cd963e91f12bceeafd05a3d125e0b7 --- 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 10:56:02,650 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-16 10:56:02,655 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-16 10:56:02,693 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-16 10:56:02,694 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-16 10:56:02,697 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-16 10:56:02,699 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-16 10:56:02,704 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-16 10:56:02,706 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-16 10:56:02,707 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-16 10:56:02,707 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-16 10:56:02,708 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-16 10:56:02,709 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-16 10:56:02,710 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-16 10:56:02,711 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-16 10:56:02,712 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-16 10:56:02,713 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-16 10:56:02,714 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-16 10:56:02,718 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-16 10:56:02,726 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-16 10:56:02,732 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-16 10:56:02,735 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-16 10:56:02,736 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-16 10:56:02,736 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-16 10:56:02,739 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-16 10:56:02,740 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-16 10:56:02,740 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-16 10:56:02,741 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-16 10:56:02,741 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-16 10:56:02,742 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-16 10:56:02,742 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-16 10:56:02,743 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-16 10:56:02,744 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-16 10:56:02,744 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-16 10:56:02,745 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-16 10:56:02,746 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-16 10:56:02,746 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-16 10:56:02,746 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-16 10:56:02,747 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-16 10:56:02,748 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-16 10:56:02,749 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-16 10:56:02,750 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a381edf-ab01-41b6-92bc-f9af652b83c9/bin/uautomizer-tPACEb0tL8/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2022-11-16 10:56:02,775 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-16 10:56:02,775 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-16 10:56:02,775 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-16 10:56:02,776 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-16 10:56:02,776 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-16 10:56:02,776 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-16 10:56:02,777 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-16 10:56:02,777 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-16 10:56:02,777 INFO L138 SettingsManager]: * Use SBE=true [2022-11-16 10:56:02,778 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-16 10:56:02,778 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-16 10:56:02,778 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-16 10:56:02,778 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-16 10:56:02,778 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-16 10:56:02,779 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-16 10:56:02,779 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-11-16 10:56:02,779 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-11-16 10:56:02,779 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-11-16 10:56:02,779 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-16 10:56:02,779 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-16 10:56:02,780 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-11-16 10:56:02,780 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-11-16 10:56:02,780 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-16 10:56:02,780 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-16 10:56:02,780 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-16 10:56:02,781 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-16 10:56:02,781 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-16 10:56:02,781 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 10:56:02,781 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-16 10:56:02,781 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-16 10:56:02,782 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-11-16 10:56:02,782 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-11-16 10:56:02,782 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-16 10:56:02,782 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_7a381edf-ab01-41b6-92bc-f9af652b83c9/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a381edf-ab01-41b6-92bc-f9af652b83c9/bin/uautomizer-tPACEb0tL8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b04cfdc033f25419ae30b8c067b1e8de34cd963e91f12bceeafd05a3d125e0b7 [2022-11-16 10:56:03,132 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-16 10:56:03,152 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-16 10:56:03,155 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-16 10:56:03,156 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-16 10:56:03,157 INFO L275 PluginConnector]: CDTParser initialized [2022-11-16 10:56:03,158 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a381edf-ab01-41b6-92bc-f9af652b83c9/bin/uautomizer-tPACEb0tL8/../../sv-benchmarks/c/ldv-memsafety/memleaks_test23_3.i [2022-11-16 10:56:03,233 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a381edf-ab01-41b6-92bc-f9af652b83c9/bin/uautomizer-tPACEb0tL8/data/f4bba1238/0c07aead98384dfb8b2cbfcdc9370e14/FLAG32d33c0d0 [2022-11-16 10:56:03,839 INFO L306 CDTParser]: Found 1 translation units. [2022-11-16 10:56:03,839 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a381edf-ab01-41b6-92bc-f9af652b83c9/sv-benchmarks/c/ldv-memsafety/memleaks_test23_3.i [2022-11-16 10:56:03,855 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a381edf-ab01-41b6-92bc-f9af652b83c9/bin/uautomizer-tPACEb0tL8/data/f4bba1238/0c07aead98384dfb8b2cbfcdc9370e14/FLAG32d33c0d0 [2022-11-16 10:56:04,146 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a381edf-ab01-41b6-92bc-f9af652b83c9/bin/uautomizer-tPACEb0tL8/data/f4bba1238/0c07aead98384dfb8b2cbfcdc9370e14 [2022-11-16 10:56:04,148 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-16 10:56:04,150 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-16 10:56:04,153 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-16 10:56:04,153 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-16 10:56:04,157 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-16 10:56:04,157 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 10:56:04" (1/1) ... [2022-11-16 10:56:04,158 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@9da186c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 10:56:04, skipping insertion in model container [2022-11-16 10:56:04,159 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 10:56:04" (1/1) ... [2022-11-16 10:56:04,165 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-16 10:56:04,230 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-16 10:56:04,689 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 10:56:04,713 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2022-11-16 10:56:04,729 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-16 10:56:04,787 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 10:56:04,794 INFO L203 MainTranslator]: Completed pre-run [2022-11-16 10:56:04,843 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 10:56:04,882 INFO L208 MainTranslator]: Completed translation [2022-11-16 10:56:04,882 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 10:56:04 WrapperNode [2022-11-16 10:56:04,882 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-16 10:56:04,883 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-16 10:56:04,883 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-16 10:56:04,884 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-16 10:56:04,890 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 10:56:04" (1/1) ... [2022-11-16 10:56:04,911 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 10:56:04" (1/1) ... [2022-11-16 10:56:04,955 INFO L138 Inliner]: procedures = 174, calls = 117, calls flagged for inlining = 29, calls inlined = 14, statements flattened = 187 [2022-11-16 10:56:04,955 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-16 10:56:04,956 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-16 10:56:04,956 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-16 10:56:04,956 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-16 10:56:04,969 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 10:56:04" (1/1) ... [2022-11-16 10:56:04,969 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 10:56:04" (1/1) ... [2022-11-16 10:56:04,985 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 10:56:04" (1/1) ... [2022-11-16 10:56:04,985 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 10:56:04" (1/1) ... [2022-11-16 10:56:05,013 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 10:56:04" (1/1) ... [2022-11-16 10:56:05,017 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 10:56:04" (1/1) ... [2022-11-16 10:56:05,019 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 10:56:04" (1/1) ... [2022-11-16 10:56:05,021 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 10:56:04" (1/1) ... [2022-11-16 10:56:05,024 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-16 10:56:05,025 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-16 10:56:05,025 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-16 10:56:05,025 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-16 10:56:05,026 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 10:56:04" (1/1) ... [2022-11-16 10:56:05,053 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 10:56:05,064 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a381edf-ab01-41b6-92bc-f9af652b83c9/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 10:56:05,092 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a381edf-ab01-41b6-92bc-f9af652b83c9/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-16 10:56:05,120 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a381edf-ab01-41b6-92bc-f9af652b83c9/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-16 10:56:05,139 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2022-11-16 10:56:05,140 INFO L130 BoogieDeclarations]: Found specification of procedure LDV_INIT_LIST_HEAD [2022-11-16 10:56:05,140 INFO L138 BoogieDeclarations]: Found implementation of procedure LDV_INIT_LIST_HEAD [2022-11-16 10:56:05,140 INFO L130 BoogieDeclarations]: Found specification of procedure __ldv_list_add [2022-11-16 10:56:05,140 INFO L138 BoogieDeclarations]: Found implementation of procedure __ldv_list_add [2022-11-16 10:56:05,140 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-11-16 10:56:05,141 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-11-16 10:56:05,142 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-16 10:56:05,142 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-16 10:56:05,143 INFO L130 BoogieDeclarations]: Found specification of procedure free_reports [2022-11-16 10:56:05,143 INFO L138 BoogieDeclarations]: Found implementation of procedure free_reports [2022-11-16 10:56:05,143 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-16 10:56:05,143 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-16 10:56:05,143 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-16 10:56:05,144 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2022-11-16 10:56:05,144 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-16 10:56:05,144 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-16 10:56:05,144 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_list_del [2022-11-16 10:56:05,144 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_list_del [2022-11-16 10:56:05,144 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2022-11-16 10:56:05,145 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2022-11-16 10:56:05,146 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-16 10:56:05,146 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-16 10:56:05,378 INFO L235 CfgBuilder]: Building ICFG [2022-11-16 10:56:05,380 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-16 10:56:06,182 INFO L276 CfgBuilder]: Performing block encoding [2022-11-16 10:56:06,190 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-16 10:56:06,191 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2022-11-16 10:56:06,193 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 10:56:06 BoogieIcfgContainer [2022-11-16 10:56:06,193 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-16 10:56:06,196 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-16 10:56:06,196 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-16 10:56:06,199 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-16 10:56:06,200 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 10:56:04" (1/3) ... [2022-11-16 10:56:06,200 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1a3ae378 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 10:56:06, skipping insertion in model container [2022-11-16 10:56:06,201 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 10:56:04" (2/3) ... [2022-11-16 10:56:06,201 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1a3ae378 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 10:56:06, skipping insertion in model container [2022-11-16 10:56:06,201 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 10:56:06" (3/3) ... [2022-11-16 10:56:06,202 INFO L112 eAbstractionObserver]: Analyzing ICFG memleaks_test23_3.i [2022-11-16 10:56:06,220 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-16 10:56:06,230 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 76 error locations. [2022-11-16 10:56:06,296 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-16 10:56:06,306 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;@4e5c0c76, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-16 10:56:06,306 INFO L358 AbstractCegarLoop]: Starting to check reachability of 76 error locations. [2022-11-16 10:56:06,311 INFO L276 IsEmpty]: Start isEmpty. Operand has 199 states, 108 states have (on average 1.8425925925925926) internal successors, (199), 184 states have internal predecessors, (199), 8 states have call successors, (8), 6 states have call predecessors, (8), 6 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2022-11-16 10:56:06,318 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-11-16 10:56:06,318 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 10:56:06,319 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 10:56:06,321 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting LDV_INIT_LIST_HEADErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [free_reportsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 73 more)] === [2022-11-16 10:56:06,326 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 10:56:06,327 INFO L85 PathProgramCache]: Analyzing trace with hash 1617164409, now seen corresponding path program 1 times [2022-11-16 10:56:06,339 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 10:56:06,339 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1744007068] [2022-11-16 10:56:06,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 10:56:06,341 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 10:56:06,341 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a381edf-ab01-41b6-92bc-f9af652b83c9/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 10:56:06,351 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a381edf-ab01-41b6-92bc-f9af652b83c9/bin/uautomizer-tPACEb0tL8/mathsat -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 10:56:06,355 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a381edf-ab01-41b6-92bc-f9af652b83c9/bin/uautomizer-tPACEb0tL8/mathsat -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 10:56:06,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:56:06,455 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-16 10:56:06,461 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 10:56:06,522 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 10:56:06,639 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 10:56:06,639 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 10:56:06,640 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 10:56:06,640 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1744007068] [2022-11-16 10:56:06,640 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1744007068] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 10:56:06,641 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 10:56:06,641 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-16 10:56:06,642 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1317202379] [2022-11-16 10:56:06,643 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 10:56:06,646 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-16 10:56:06,647 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 10:56:06,682 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-16 10:56:06,683 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-16 10:56:06,687 INFO L87 Difference]: Start difference. First operand has 199 states, 108 states have (on average 1.8425925925925926) internal successors, (199), 184 states have internal predecessors, (199), 8 states have call successors, (8), 6 states have call predecessors, (8), 6 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) Second operand has 7 states, 6 states have (on average 1.5) internal successors, (9), 5 states have internal predecessors, (9), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-16 10:56:07,593 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 10:56:07,593 INFO L93 Difference]: Finished difference Result 226 states and 243 transitions. [2022-11-16 10:56:07,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-16 10:56:07,596 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 1.5) internal successors, (9), 5 states have internal predecessors, (9), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 12 [2022-11-16 10:56:07,596 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 10:56:07,609 INFO L225 Difference]: With dead ends: 226 [2022-11-16 10:56:07,609 INFO L226 Difference]: Without dead ends: 222 [2022-11-16 10:56:07,611 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-11-16 10:56:07,620 INFO L413 NwaCegarLoop]: 199 mSDtfsCounter, 28 mSDsluCounter, 626 mSDsCounter, 0 mSdLazyCounter, 459 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 825 SdHoareTripleChecker+Invalid, 463 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 459 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-11-16 10:56:07,621 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 825 Invalid, 463 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 459 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-11-16 10:56:07,639 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 222 states. [2022-11-16 10:56:07,687 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 222 to 206. [2022-11-16 10:56:07,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 206 states, 114 states have (on average 1.7894736842105263) internal successors, (204), 189 states have internal predecessors, (204), 9 states have call successors, (9), 7 states have call predecessors, (9), 8 states have return successors, (10), 9 states have call predecessors, (10), 9 states have call successors, (10) [2022-11-16 10:56:07,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 206 states to 206 states and 223 transitions. [2022-11-16 10:56:07,701 INFO L78 Accepts]: Start accepts. Automaton has 206 states and 223 transitions. Word has length 12 [2022-11-16 10:56:07,701 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 10:56:07,701 INFO L495 AbstractCegarLoop]: Abstraction has 206 states and 223 transitions. [2022-11-16 10:56:07,702 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 1.5) internal successors, (9), 5 states have internal predecessors, (9), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-16 10:56:07,702 INFO L276 IsEmpty]: Start isEmpty. Operand 206 states and 223 transitions. [2022-11-16 10:56:07,703 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-11-16 10:56:07,703 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 10:56:07,704 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 10:56:07,720 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a381edf-ab01-41b6-92bc-f9af652b83c9/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2022-11-16 10:56:07,915 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a381edf-ab01-41b6-92bc-f9af652b83c9/bin/uautomizer-tPACEb0tL8/mathsat -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 10:56:07,916 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting LDV_INIT_LIST_HEADErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [free_reportsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 73 more)] === [2022-11-16 10:56:07,916 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 10:56:07,917 INFO L85 PathProgramCache]: Analyzing trace with hash 1617164410, now seen corresponding path program 1 times [2022-11-16 10:56:07,917 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 10:56:07,917 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1066808170] [2022-11-16 10:56:07,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 10:56:07,918 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 10:56:07,918 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a381edf-ab01-41b6-92bc-f9af652b83c9/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 10:56:07,921 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a381edf-ab01-41b6-92bc-f9af652b83c9/bin/uautomizer-tPACEb0tL8/mathsat -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 10:56:07,922 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a381edf-ab01-41b6-92bc-f9af652b83c9/bin/uautomizer-tPACEb0tL8/mathsat -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 10:56:08,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:56:08,029 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 14 conjunts are in the unsatisfiable core [2022-11-16 10:56:08,031 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 10:56:08,076 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 10:56:08,207 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 10:56:08,207 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 10:56:08,207 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 10:56:08,208 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1066808170] [2022-11-16 10:56:08,208 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1066808170] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 10:56:08,208 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 10:56:08,208 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-16 10:56:08,208 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [810068098] [2022-11-16 10:56:08,208 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 10:56:08,209 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-16 10:56:08,210 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 10:56:08,210 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-16 10:56:08,210 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-16 10:56:08,210 INFO L87 Difference]: Start difference. First operand 206 states and 223 transitions. Second operand has 8 states, 7 states have (on average 1.2857142857142858) internal successors, (9), 6 states have internal predecessors, (9), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-16 10:56:09,104 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 10:56:09,104 INFO L93 Difference]: Finished difference Result 231 states and 247 transitions. [2022-11-16 10:56:09,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-16 10:56:09,105 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 1.2857142857142858) internal successors, (9), 6 states have internal predecessors, (9), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 12 [2022-11-16 10:56:09,105 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 10:56:09,106 INFO L225 Difference]: With dead ends: 231 [2022-11-16 10:56:09,106 INFO L226 Difference]: Without dead ends: 231 [2022-11-16 10:56:09,107 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2022-11-16 10:56:09,108 INFO L413 NwaCegarLoop]: 196 mSDtfsCounter, 35 mSDsluCounter, 874 mSDsCounter, 0 mSdLazyCounter, 407 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 1070 SdHoareTripleChecker+Invalid, 408 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 407 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-11-16 10:56:09,108 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [37 Valid, 1070 Invalid, 408 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 407 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-11-16 10:56:09,109 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 231 states. [2022-11-16 10:56:09,117 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 231 to 206. [2022-11-16 10:56:09,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 206 states, 114 states have (on average 1.7719298245614035) internal successors, (202), 189 states have internal predecessors, (202), 9 states have call successors, (9), 7 states have call predecessors, (9), 8 states have return successors, (10), 9 states have call predecessors, (10), 9 states have call successors, (10) [2022-11-16 10:56:09,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 206 states to 206 states and 221 transitions. [2022-11-16 10:56:09,119 INFO L78 Accepts]: Start accepts. Automaton has 206 states and 221 transitions. Word has length 12 [2022-11-16 10:56:09,119 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 10:56:09,119 INFO L495 AbstractCegarLoop]: Abstraction has 206 states and 221 transitions. [2022-11-16 10:56:09,120 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 1.2857142857142858) internal successors, (9), 6 states have internal predecessors, (9), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-16 10:56:09,120 INFO L276 IsEmpty]: Start isEmpty. Operand 206 states and 221 transitions. [2022-11-16 10:56:09,120 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-11-16 10:56:09,120 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 10:56:09,121 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 10:56:09,147 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a381edf-ab01-41b6-92bc-f9af652b83c9/bin/uautomizer-tPACEb0tL8/mathsat -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 10:56:09,336 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a381edf-ab01-41b6-92bc-f9af652b83c9/bin/uautomizer-tPACEb0tL8/mathsat -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 10:56:09,336 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting LDV_INIT_LIST_HEADErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [free_reportsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 73 more)] === [2022-11-16 10:56:09,337 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 10:56:09,337 INFO L85 PathProgramCache]: Analyzing trace with hash -934992552, now seen corresponding path program 1 times [2022-11-16 10:56:09,337 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 10:56:09,337 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [516120511] [2022-11-16 10:56:09,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 10:56:09,338 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 10:56:09,338 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a381edf-ab01-41b6-92bc-f9af652b83c9/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 10:56:09,339 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a381edf-ab01-41b6-92bc-f9af652b83c9/bin/uautomizer-tPACEb0tL8/mathsat -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 10:56:09,380 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a381edf-ab01-41b6-92bc-f9af652b83c9/bin/uautomizer-tPACEb0tL8/mathsat -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 10:56:09,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:56:09,437 INFO L263 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-16 10:56:09,441 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 10:56:09,510 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 10:56:09,510 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 10:56:09,511 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 10:56:09,511 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [516120511] [2022-11-16 10:56:09,511 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [516120511] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 10:56:09,511 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 10:56:09,511 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 10:56:09,511 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1818602533] [2022-11-16 10:56:09,512 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 10:56:09,512 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-16 10:56:09,512 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 10:56:09,513 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-16 10:56:09,516 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-16 10:56:09,516 INFO L87 Difference]: Start difference. First operand 206 states and 221 transitions. Second operand has 5 states, 5 states have (on average 1.8) internal successors, (9), 4 states have internal predecessors, (9), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-16 10:56:09,557 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 10:56:09,557 INFO L93 Difference]: Finished difference Result 218 states and 233 transitions. [2022-11-16 10:56:09,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 10:56:09,558 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1.8) internal successors, (9), 4 states have internal predecessors, (9), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 12 [2022-11-16 10:56:09,559 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 10:56:09,560 INFO L225 Difference]: With dead ends: 218 [2022-11-16 10:56:09,560 INFO L226 Difference]: Without dead ends: 218 [2022-11-16 10:56:09,562 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-16 10:56:09,570 INFO L413 NwaCegarLoop]: 210 mSDtfsCounter, 20 mSDsluCounter, 610 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 820 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-16 10:56:09,571 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 820 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-16 10:56:09,573 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 218 states. [2022-11-16 10:56:09,579 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 218 to 197. [2022-11-16 10:56:09,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 197 states, 110 states have (on average 1.7636363636363637) internal successors, (194), 181 states have internal predecessors, (194), 8 states have call successors, (8), 6 states have call predecessors, (8), 7 states have return successors, (9), 9 states have call predecessors, (9), 8 states have call successors, (9) [2022-11-16 10:56:09,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 197 states to 197 states and 211 transitions. [2022-11-16 10:56:09,581 INFO L78 Accepts]: Start accepts. Automaton has 197 states and 211 transitions. Word has length 12 [2022-11-16 10:56:09,581 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 10:56:09,585 INFO L495 AbstractCegarLoop]: Abstraction has 197 states and 211 transitions. [2022-11-16 10:56:09,585 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 1.8) internal successors, (9), 4 states have internal predecessors, (9), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-16 10:56:09,585 INFO L276 IsEmpty]: Start isEmpty. Operand 197 states and 211 transitions. [2022-11-16 10:56:09,585 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-11-16 10:56:09,585 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 10:56:09,586 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 10:56:09,603 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a381edf-ab01-41b6-92bc-f9af652b83c9/bin/uautomizer-tPACEb0tL8/mathsat -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 10:56:09,803 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a381edf-ab01-41b6-92bc-f9af652b83c9/bin/uautomizer-tPACEb0tL8/mathsat -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 10:56:09,803 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr39REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [free_reportsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 73 more)] === [2022-11-16 10:56:09,804 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 10:56:09,804 INFO L85 PathProgramCache]: Analyzing trace with hash 1617078937, now seen corresponding path program 1 times [2022-11-16 10:56:09,804 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 10:56:09,804 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [774895546] [2022-11-16 10:56:09,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 10:56:09,805 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 10:56:09,805 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a381edf-ab01-41b6-92bc-f9af652b83c9/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 10:56:09,806 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a381edf-ab01-41b6-92bc-f9af652b83c9/bin/uautomizer-tPACEb0tL8/mathsat -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 10:56:09,811 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a381edf-ab01-41b6-92bc-f9af652b83c9/bin/uautomizer-tPACEb0tL8/mathsat -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 10:56:09,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:56:09,909 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-16 10:56:09,910 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 10:56:09,946 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 10:56:09,946 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 10:56:09,947 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 10:56:09,947 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [774895546] [2022-11-16 10:56:09,947 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [774895546] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 10:56:09,947 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 10:56:09,947 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 10:56:09,947 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [299780552] [2022-11-16 10:56:09,947 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 10:56:09,948 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-16 10:56:09,948 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 10:56:09,948 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-16 10:56:09,949 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-16 10:56:09,949 INFO L87 Difference]: Start difference. First operand 197 states and 211 transitions. Second operand has 5 states, 5 states have (on average 2.0) internal successors, (10), 4 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-16 10:56:09,992 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 10:56:09,992 INFO L93 Difference]: Finished difference Result 218 states and 232 transitions. [2022-11-16 10:56:09,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 10:56:09,992 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.0) internal successors, (10), 4 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 12 [2022-11-16 10:56:09,993 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 10:56:09,994 INFO L225 Difference]: With dead ends: 218 [2022-11-16 10:56:09,994 INFO L226 Difference]: Without dead ends: 218 [2022-11-16 10:56:09,994 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-16 10:56:09,996 INFO L413 NwaCegarLoop]: 222 mSDtfsCounter, 123 mSDsluCounter, 534 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 129 SdHoareTripleChecker+Valid, 756 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-16 10:56:09,997 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [129 Valid, 756 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-16 10:56:09,998 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 218 states. [2022-11-16 10:56:10,015 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 218 to 197. [2022-11-16 10:56:10,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 197 states, 110 states have (on average 1.7545454545454546) internal successors, (193), 181 states have internal predecessors, (193), 8 states have call successors, (8), 6 states have call predecessors, (8), 7 states have return successors, (9), 9 states have call predecessors, (9), 8 states have call successors, (9) [2022-11-16 10:56:10,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 197 states to 197 states and 210 transitions. [2022-11-16 10:56:10,017 INFO L78 Accepts]: Start accepts. Automaton has 197 states and 210 transitions. Word has length 12 [2022-11-16 10:56:10,017 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 10:56:10,018 INFO L495 AbstractCegarLoop]: Abstraction has 197 states and 210 transitions. [2022-11-16 10:56:10,018 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.0) internal successors, (10), 4 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-16 10:56:10,018 INFO L276 IsEmpty]: Start isEmpty. Operand 197 states and 210 transitions. [2022-11-16 10:56:10,018 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-11-16 10:56:10,019 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 10:56:10,019 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 10:56:10,035 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a381edf-ab01-41b6-92bc-f9af652b83c9/bin/uautomizer-tPACEb0tL8/mathsat -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 10:56:10,223 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a381edf-ab01-41b6-92bc-f9af652b83c9/bin/uautomizer-tPACEb0tL8/mathsat -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 10:56:10,223 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr39REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [free_reportsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 73 more)] === [2022-11-16 10:56:10,224 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 10:56:10,224 INFO L85 PathProgramCache]: Analyzing trace with hash -935078024, now seen corresponding path program 1 times [2022-11-16 10:56:10,224 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 10:56:10,224 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1543946380] [2022-11-16 10:56:10,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 10:56:10,224 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 10:56:10,225 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a381edf-ab01-41b6-92bc-f9af652b83c9/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 10:56:10,225 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a381edf-ab01-41b6-92bc-f9af652b83c9/bin/uautomizer-tPACEb0tL8/mathsat -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 10:56:10,230 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a381edf-ab01-41b6-92bc-f9af652b83c9/bin/uautomizer-tPACEb0tL8/mathsat -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 10:56:10,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:56:10,322 INFO L263 TraceCheckSpWp]: Trace formula consists of 57 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-16 10:56:10,325 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 10:56:10,365 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 10:56:10,365 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 10:56:10,365 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 10:56:10,365 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1543946380] [2022-11-16 10:56:10,366 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1543946380] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 10:56:10,366 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 10:56:10,366 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 10:56:10,366 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2053945348] [2022-11-16 10:56:10,366 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 10:56:10,367 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-16 10:56:10,367 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 10:56:10,367 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-16 10:56:10,367 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-16 10:56:10,368 INFO L87 Difference]: Start difference. First operand 197 states and 210 transitions. Second operand has 5 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-16 10:56:10,413 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 10:56:10,413 INFO L93 Difference]: Finished difference Result 202 states and 214 transitions. [2022-11-16 10:56:10,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 10:56:10,414 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 12 [2022-11-16 10:56:10,414 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 10:56:10,415 INFO L225 Difference]: With dead ends: 202 [2022-11-16 10:56:10,415 INFO L226 Difference]: Without dead ends: 202 [2022-11-16 10:56:10,415 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-11-16 10:56:10,416 INFO L413 NwaCegarLoop]: 204 mSDtfsCounter, 106 mSDsluCounter, 504 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 111 SdHoareTripleChecker+Valid, 708 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-16 10:56:10,416 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [111 Valid, 708 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-16 10:56:10,417 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 202 states. [2022-11-16 10:56:10,421 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 202 to 199. [2022-11-16 10:56:10,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 199 states, 112 states have (on average 1.7410714285714286) internal successors, (195), 183 states have internal predecessors, (195), 8 states have call successors, (8), 6 states have call predecessors, (8), 7 states have return successors, (9), 9 states have call predecessors, (9), 8 states have call successors, (9) [2022-11-16 10:56:10,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 199 states to 199 states and 212 transitions. [2022-11-16 10:56:10,425 INFO L78 Accepts]: Start accepts. Automaton has 199 states and 212 transitions. Word has length 12 [2022-11-16 10:56:10,425 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 10:56:10,425 INFO L495 AbstractCegarLoop]: Abstraction has 199 states and 212 transitions. [2022-11-16 10:56:10,425 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-16 10:56:10,426 INFO L276 IsEmpty]: Start isEmpty. Operand 199 states and 212 transitions. [2022-11-16 10:56:10,426 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-11-16 10:56:10,426 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 10:56:10,426 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 10:56:10,449 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a381edf-ab01-41b6-92bc-f9af652b83c9/bin/uautomizer-tPACEb0tL8/mathsat -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 10:56:10,649 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a381edf-ab01-41b6-92bc-f9af652b83c9/bin/uautomizer-tPACEb0tL8/mathsat -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 10:56:10,650 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr46ASSERT_VIOLATIONMEMORY_LEAK === [free_reportsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 73 more)] === [2022-11-16 10:56:10,650 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 10:56:10,650 INFO L85 PathProgramCache]: Analyzing trace with hash 1077372438, now seen corresponding path program 1 times [2022-11-16 10:56:10,650 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 10:56:10,651 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1502435854] [2022-11-16 10:56:10,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 10:56:10,651 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 10:56:10,651 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a381edf-ab01-41b6-92bc-f9af652b83c9/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 10:56:10,652 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a381edf-ab01-41b6-92bc-f9af652b83c9/bin/uautomizer-tPACEb0tL8/mathsat -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 10:56:10,657 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a381edf-ab01-41b6-92bc-f9af652b83c9/bin/uautomizer-tPACEb0tL8/mathsat -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 10:56:10,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:56:10,733 INFO L263 TraceCheckSpWp]: Trace formula consists of 50 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-16 10:56:10,736 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 10:56:10,775 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 10:56:10,775 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 10:56:10,775 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 10:56:10,775 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1502435854] [2022-11-16 10:56:10,775 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1502435854] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 10:56:10,776 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 10:56:10,776 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 10:56:10,776 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2082947348] [2022-11-16 10:56:10,776 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 10:56:10,776 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 10:56:10,777 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 10:56:10,777 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 10:56:10,777 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 10:56:10,777 INFO L87 Difference]: Start difference. First operand 199 states and 212 transitions. Second operand has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 4 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-16 10:56:11,184 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 10:56:11,185 INFO L93 Difference]: Finished difference Result 211 states and 226 transitions. [2022-11-16 10:56:11,185 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 10:56:11,185 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 4 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 13 [2022-11-16 10:56:11,186 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 10:56:11,187 INFO L225 Difference]: With dead ends: 211 [2022-11-16 10:56:11,187 INFO L226 Difference]: Without dead ends: 203 [2022-11-16 10:56:11,187 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 10:56:11,188 INFO L413 NwaCegarLoop]: 167 mSDtfsCounter, 51 mSDsluCounter, 205 mSDsCounter, 0 mSdLazyCounter, 202 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 372 SdHoareTripleChecker+Invalid, 210 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 202 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-16 10:56:11,188 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [52 Valid, 372 Invalid, 210 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 202 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-16 10:56:11,189 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 203 states. [2022-11-16 10:56:11,192 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 203 to 193. [2022-11-16 10:56:11,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 193 states, 107 states have (on average 1.766355140186916) internal successors, (189), 178 states have internal predecessors, (189), 8 states have call successors, (8), 6 states have call predecessors, (8), 6 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2022-11-16 10:56:11,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 193 states to 193 states and 205 transitions. [2022-11-16 10:56:11,193 INFO L78 Accepts]: Start accepts. Automaton has 193 states and 205 transitions. Word has length 13 [2022-11-16 10:56:11,193 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 10:56:11,193 INFO L495 AbstractCegarLoop]: Abstraction has 193 states and 205 transitions. [2022-11-16 10:56:11,193 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 4 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-16 10:56:11,194 INFO L276 IsEmpty]: Start isEmpty. Operand 193 states and 205 transitions. [2022-11-16 10:56:11,194 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-11-16 10:56:11,194 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 10:56:11,194 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 10:56:11,218 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a381edf-ab01-41b6-92bc-f9af652b83c9/bin/uautomizer-tPACEb0tL8/mathsat -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 10:56:11,405 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a381edf-ab01-41b6-92bc-f9af652b83c9/bin/uautomizer-tPACEb0tL8/mathsat -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 10:56:11,406 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [free_reportsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 73 more)] === [2022-11-16 10:56:11,406 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 10:56:11,406 INFO L85 PathProgramCache]: Analyzing trace with hash 609549957, now seen corresponding path program 1 times [2022-11-16 10:56:11,406 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 10:56:11,407 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1157333389] [2022-11-16 10:56:11,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 10:56:11,407 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 10:56:11,407 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a381edf-ab01-41b6-92bc-f9af652b83c9/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 10:56:11,408 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a381edf-ab01-41b6-92bc-f9af652b83c9/bin/uautomizer-tPACEb0tL8/mathsat -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 10:56:11,433 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a381edf-ab01-41b6-92bc-f9af652b83c9/bin/uautomizer-tPACEb0tL8/mathsat -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 10:56:11,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:56:11,516 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 15 conjunts are in the unsatisfiable core [2022-11-16 10:56:11,521 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 10:56:11,638 WARN L855 $PredicateComparison]: unable to prove that (exists ((|ldv_malloc_#res.base| (_ BitVec 32))) (and (= (_ bv0 1) (select |c_old(#valid)| |ldv_malloc_#res.base|)) (exists ((v_ArrVal_23 (_ BitVec 32))) (= |c_#length| (store |c_old(#length)| |ldv_malloc_#res.base| v_ArrVal_23))))) is different from true [2022-11-16 10:56:11,719 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 10:56:11,721 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2022-11-16 10:56:11,823 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 10:56:11,824 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 10:56:11,824 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 10:56:11,824 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1157333389] [2022-11-16 10:56:11,824 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1157333389] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 10:56:11,824 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 10:56:11,824 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-16 10:56:11,825 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2058285148] [2022-11-16 10:56:11,825 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 10:56:11,825 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-16 10:56:11,825 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 10:56:11,826 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-16 10:56:11,826 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=28, Unknown=1, NotChecked=10, Total=56 [2022-11-16 10:56:11,826 INFO L87 Difference]: Start difference. First operand 193 states and 205 transitions. Second operand has 8 states, 6 states have (on average 2.0) internal successors, (12), 7 states have internal predecessors, (12), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-16 10:56:12,816 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 10:56:12,816 INFO L93 Difference]: Finished difference Result 203 states and 218 transitions. [2022-11-16 10:56:12,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-16 10:56:12,817 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 6 states have (on average 2.0) internal successors, (12), 7 states have internal predecessors, (12), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) Word has length 16 [2022-11-16 10:56:12,817 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 10:56:12,819 INFO L225 Difference]: With dead ends: 203 [2022-11-16 10:56:12,819 INFO L226 Difference]: Without dead ends: 203 [2022-11-16 10:56:12,819 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=37, Invalid=76, Unknown=1, NotChecked=18, Total=132 [2022-11-16 10:56:12,820 INFO L413 NwaCegarLoop]: 143 mSDtfsCounter, 58 mSDsluCounter, 335 mSDsCounter, 0 mSdLazyCounter, 462 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 59 SdHoareTripleChecker+Valid, 478 SdHoareTripleChecker+Invalid, 694 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 462 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 215 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-11-16 10:56:12,820 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [59 Valid, 478 Invalid, 694 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 462 Invalid, 0 Unknown, 215 Unchecked, 0.9s Time] [2022-11-16 10:56:12,821 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 203 states. [2022-11-16 10:56:12,825 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 203 to 192. [2022-11-16 10:56:12,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 192 states, 107 states have (on average 1.7570093457943925) internal successors, (188), 177 states have internal predecessors, (188), 8 states have call successors, (8), 6 states have call predecessors, (8), 6 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2022-11-16 10:56:12,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 192 states to 192 states and 204 transitions. [2022-11-16 10:56:12,826 INFO L78 Accepts]: Start accepts. Automaton has 192 states and 204 transitions. Word has length 16 [2022-11-16 10:56:12,826 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 10:56:12,826 INFO L495 AbstractCegarLoop]: Abstraction has 192 states and 204 transitions. [2022-11-16 10:56:12,827 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 6 states have (on average 2.0) internal successors, (12), 7 states have internal predecessors, (12), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-16 10:56:12,827 INFO L276 IsEmpty]: Start isEmpty. Operand 192 states and 204 transitions. [2022-11-16 10:56:12,827 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-11-16 10:56:12,827 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 10:56:12,827 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 10:56:12,843 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a381edf-ab01-41b6-92bc-f9af652b83c9/bin/uautomizer-tPACEb0tL8/mathsat -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 10:56:13,038 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a381edf-ab01-41b6-92bc-f9af652b83c9/bin/uautomizer-tPACEb0tL8/mathsat -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 10:56:13,039 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [free_reportsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 73 more)] === [2022-11-16 10:56:13,039 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 10:56:13,039 INFO L85 PathProgramCache]: Analyzing trace with hash 609549956, now seen corresponding path program 1 times [2022-11-16 10:56:13,039 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 10:56:13,039 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1934445986] [2022-11-16 10:56:13,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 10:56:13,040 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 10:56:13,040 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a381edf-ab01-41b6-92bc-f9af652b83c9/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 10:56:13,040 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a381edf-ab01-41b6-92bc-f9af652b83c9/bin/uautomizer-tPACEb0tL8/mathsat -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 10:56:13,042 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a381edf-ab01-41b6-92bc-f9af652b83c9/bin/uautomizer-tPACEb0tL8/mathsat -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 10:56:13,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:56:13,141 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-16 10:56:13,142 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 10:56:13,211 WARN L855 $PredicateComparison]: unable to prove that (exists ((|ldv_malloc_#res.base| (_ BitVec 32))) (and (= (_ bv0 1) (select |c_old(#valid)| |ldv_malloc_#res.base|)) (exists ((v_ArrVal_38 (_ BitVec 1))) (= (store |c_old(#valid)| |ldv_malloc_#res.base| v_ArrVal_38) |c_#valid|)))) is different from true [2022-11-16 10:56:13,272 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-11-16 10:56:13,273 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 19 treesize of output 27 [2022-11-16 10:56:13,315 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 10:56:13,316 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 10:56:13,316 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 10:56:13,316 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1934445986] [2022-11-16 10:56:13,316 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1934445986] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 10:56:13,316 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 10:56:13,316 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 10:56:13,317 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [695278622] [2022-11-16 10:56:13,317 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 10:56:13,317 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-16 10:56:13,317 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 10:56:13,318 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-16 10:56:13,321 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=20, Unknown=1, NotChecked=8, Total=42 [2022-11-16 10:56:13,322 INFO L87 Difference]: Start difference. First operand 192 states and 204 transitions. Second operand has 7 states, 6 states have (on average 2.0) internal successors, (12), 6 states have internal predecessors, (12), 1 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-16 10:56:14,063 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 10:56:14,064 INFO L93 Difference]: Finished difference Result 244 states and 259 transitions. [2022-11-16 10:56:14,064 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-16 10:56:14,064 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 2.0) internal successors, (12), 6 states have internal predecessors, (12), 1 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 16 [2022-11-16 10:56:14,065 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 10:56:14,066 INFO L225 Difference]: With dead ends: 244 [2022-11-16 10:56:14,066 INFO L226 Difference]: Without dead ends: 244 [2022-11-16 10:56:14,067 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=61, Unknown=1, NotChecked=16, Total=110 [2022-11-16 10:56:14,067 INFO L413 NwaCegarLoop]: 134 mSDtfsCounter, 195 mSDsluCounter, 262 mSDsCounter, 0 mSdLazyCounter, 384 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 197 SdHoareTripleChecker+Valid, 396 SdHoareTripleChecker+Invalid, 648 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 384 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 238 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-16 10:56:14,067 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [197 Valid, 396 Invalid, 648 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 384 Invalid, 0 Unknown, 238 Unchecked, 0.7s Time] [2022-11-16 10:56:14,068 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 244 states. [2022-11-16 10:56:14,072 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 244 to 202. [2022-11-16 10:56:14,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 202 states, 116 states have (on average 1.7413793103448276) internal successors, (202), 186 states have internal predecessors, (202), 8 states have call successors, (8), 7 states have call predecessors, (8), 8 states have return successors, (10), 8 states have call predecessors, (10), 8 states have call successors, (10) [2022-11-16 10:56:14,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 202 states to 202 states and 220 transitions. [2022-11-16 10:56:14,074 INFO L78 Accepts]: Start accepts. Automaton has 202 states and 220 transitions. Word has length 16 [2022-11-16 10:56:14,074 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 10:56:14,074 INFO L495 AbstractCegarLoop]: Abstraction has 202 states and 220 transitions. [2022-11-16 10:56:14,074 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 2.0) internal successors, (12), 6 states have internal predecessors, (12), 1 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-16 10:56:14,074 INFO L276 IsEmpty]: Start isEmpty. Operand 202 states and 220 transitions. [2022-11-16 10:56:14,075 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-11-16 10:56:14,075 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 10:56:14,075 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 10:56:14,093 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a381edf-ab01-41b6-92bc-f9af652b83c9/bin/uautomizer-tPACEb0tL8/mathsat -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 10:56:14,275 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a381edf-ab01-41b6-92bc-f9af652b83c9/bin/uautomizer-tPACEb0tL8/mathsat -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 10:56:14,276 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [free_reportsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 73 more)] === [2022-11-16 10:56:14,276 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 10:56:14,276 INFO L85 PathProgramCache]: Analyzing trace with hash -1600340348, now seen corresponding path program 1 times [2022-11-16 10:56:14,277 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 10:56:14,277 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1163182174] [2022-11-16 10:56:14,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 10:56:14,277 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 10:56:14,277 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a381edf-ab01-41b6-92bc-f9af652b83c9/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 10:56:14,278 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a381edf-ab01-41b6-92bc-f9af652b83c9/bin/uautomizer-tPACEb0tL8/mathsat -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 10:56:14,281 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a381edf-ab01-41b6-92bc-f9af652b83c9/bin/uautomizer-tPACEb0tL8/mathsat -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 10:56:14,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:56:14,400 INFO L263 TraceCheckSpWp]: Trace formula consists of 145 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-16 10:56:14,405 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 10:56:14,411 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 10:56:14,453 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 10:56:14,453 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 10:56:14,453 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 10:56:14,453 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1163182174] [2022-11-16 10:56:14,454 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1163182174] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 10:56:14,454 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 10:56:14,454 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 10:56:14,454 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1654469470] [2022-11-16 10:56:14,454 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 10:56:14,455 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 10:56:14,455 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 10:56:14,456 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 10:56:14,456 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-16 10:56:14,456 INFO L87 Difference]: Start difference. First operand 202 states and 220 transitions. Second operand has 6 states, 5 states have (on average 3.8) internal successors, (19), 5 states have internal predecessors, (19), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-16 10:56:15,216 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 10:56:15,217 INFO L93 Difference]: Finished difference Result 252 states and 278 transitions. [2022-11-16 10:56:15,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-16 10:56:15,218 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.8) internal successors, (19), 5 states have internal predecessors, (19), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 25 [2022-11-16 10:56:15,218 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 10:56:15,219 INFO L225 Difference]: With dead ends: 252 [2022-11-16 10:56:15,219 INFO L226 Difference]: Without dead ends: 252 [2022-11-16 10:56:15,219 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-16 10:56:15,220 INFO L413 NwaCegarLoop]: 171 mSDtfsCounter, 65 mSDsluCounter, 462 mSDsCounter, 0 mSdLazyCounter, 365 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 65 SdHoareTripleChecker+Valid, 633 SdHoareTripleChecker+Invalid, 367 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 365 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-16 10:56:15,220 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [65 Valid, 633 Invalid, 367 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 365 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-16 10:56:15,221 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 252 states. [2022-11-16 10:56:15,225 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 252 to 227. [2022-11-16 10:56:15,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 227 states, 143 states have (on average 1.7622377622377623) internal successors, (252), 211 states have internal predecessors, (252), 8 states have call successors, (8), 7 states have call predecessors, (8), 8 states have return successors, (10), 8 states have call predecessors, (10), 8 states have call successors, (10) [2022-11-16 10:56:15,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 227 states to 227 states and 270 transitions. [2022-11-16 10:56:15,239 INFO L78 Accepts]: Start accepts. Automaton has 227 states and 270 transitions. Word has length 25 [2022-11-16 10:56:15,239 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 10:56:15,239 INFO L495 AbstractCegarLoop]: Abstraction has 227 states and 270 transitions. [2022-11-16 10:56:15,239 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.8) internal successors, (19), 5 states have internal predecessors, (19), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-16 10:56:15,243 INFO L276 IsEmpty]: Start isEmpty. Operand 227 states and 270 transitions. [2022-11-16 10:56:15,243 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-11-16 10:56:15,243 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 10:56:15,244 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 10:56:15,259 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a381edf-ab01-41b6-92bc-f9af652b83c9/bin/uautomizer-tPACEb0tL8/mathsat -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 10:56:15,451 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a381edf-ab01-41b6-92bc-f9af652b83c9/bin/uautomizer-tPACEb0tL8/mathsat -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 10:56:15,451 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [free_reportsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 73 more)] === [2022-11-16 10:56:15,451 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 10:56:15,452 INFO L85 PathProgramCache]: Analyzing trace with hash -1600340347, now seen corresponding path program 1 times [2022-11-16 10:56:15,452 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 10:56:15,452 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2136682645] [2022-11-16 10:56:15,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 10:56:15,452 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 10:56:15,452 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a381edf-ab01-41b6-92bc-f9af652b83c9/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 10:56:15,453 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a381edf-ab01-41b6-92bc-f9af652b83c9/bin/uautomizer-tPACEb0tL8/mathsat -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 10:56:15,459 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a381edf-ab01-41b6-92bc-f9af652b83c9/bin/uautomizer-tPACEb0tL8/mathsat -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 10:56:15,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:56:15,576 INFO L263 TraceCheckSpWp]: Trace formula consists of 145 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-16 10:56:15,578 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 10:56:15,591 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 10:56:15,678 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 10:56:15,678 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 10:56:15,678 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 10:56:15,678 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2136682645] [2022-11-16 10:56:15,679 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2136682645] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 10:56:15,679 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 10:56:15,679 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 10:56:15,679 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1530080594] [2022-11-16 10:56:15,679 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 10:56:15,679 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 10:56:15,680 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 10:56:15,680 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 10:56:15,680 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-16 10:56:15,680 INFO L87 Difference]: Start difference. First operand 227 states and 270 transitions. Second operand has 6 states, 5 states have (on average 3.8) internal successors, (19), 5 states have internal predecessors, (19), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-16 10:56:16,617 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 10:56:16,617 INFO L93 Difference]: Finished difference Result 284 states and 313 transitions. [2022-11-16 10:56:16,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-16 10:56:16,623 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.8) internal successors, (19), 5 states have internal predecessors, (19), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 25 [2022-11-16 10:56:16,624 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 10:56:16,625 INFO L225 Difference]: With dead ends: 284 [2022-11-16 10:56:16,625 INFO L226 Difference]: Without dead ends: 284 [2022-11-16 10:56:16,626 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-16 10:56:16,626 INFO L413 NwaCegarLoop]: 159 mSDtfsCounter, 99 mSDsluCounter, 472 mSDsCounter, 0 mSdLazyCounter, 361 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 101 SdHoareTripleChecker+Valid, 631 SdHoareTripleChecker+Invalid, 364 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 361 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-11-16 10:56:16,627 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [101 Valid, 631 Invalid, 364 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 361 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-11-16 10:56:16,627 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 284 states. [2022-11-16 10:56:16,651 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 284 to 229. [2022-11-16 10:56:16,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 229 states, 146 states have (on average 1.7397260273972603) internal successors, (254), 212 states have internal predecessors, (254), 9 states have call successors, (9), 7 states have call predecessors, (9), 8 states have return successors, (12), 9 states have call predecessors, (12), 9 states have call successors, (12) [2022-11-16 10:56:16,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 229 states to 229 states and 275 transitions. [2022-11-16 10:56:16,654 INFO L78 Accepts]: Start accepts. Automaton has 229 states and 275 transitions. Word has length 25 [2022-11-16 10:56:16,654 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 10:56:16,654 INFO L495 AbstractCegarLoop]: Abstraction has 229 states and 275 transitions. [2022-11-16 10:56:16,655 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.8) internal successors, (19), 5 states have internal predecessors, (19), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-16 10:56:16,655 INFO L276 IsEmpty]: Start isEmpty. Operand 229 states and 275 transitions. [2022-11-16 10:56:16,655 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-11-16 10:56:16,655 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 10:56:16,656 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 10:56:16,664 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a381edf-ab01-41b6-92bc-f9af652b83c9/bin/uautomizer-tPACEb0tL8/mathsat -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 10:56:16,859 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a381edf-ab01-41b6-92bc-f9af652b83c9/bin/uautomizer-tPACEb0tL8/mathsat -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 10:56:16,859 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr36ASSERT_VIOLATIONMEMORY_FREE === [free_reportsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 73 more)] === [2022-11-16 10:56:16,859 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 10:56:16,860 INFO L85 PathProgramCache]: Analyzing trace with hash -328716411, now seen corresponding path program 1 times [2022-11-16 10:56:16,860 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 10:56:16,860 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1024447674] [2022-11-16 10:56:16,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 10:56:16,860 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 10:56:16,860 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a381edf-ab01-41b6-92bc-f9af652b83c9/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 10:56:16,861 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a381edf-ab01-41b6-92bc-f9af652b83c9/bin/uautomizer-tPACEb0tL8/mathsat -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 10:56:16,870 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a381edf-ab01-41b6-92bc-f9af652b83c9/bin/uautomizer-tPACEb0tL8/mathsat -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 10:56:16,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:56:16,994 INFO L263 TraceCheckSpWp]: Trace formula consists of 151 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-16 10:56:16,995 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 10:56:17,027 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 10:56:17,028 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 10:56:17,028 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 10:56:17,028 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1024447674] [2022-11-16 10:56:17,028 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1024447674] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 10:56:17,028 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 10:56:17,028 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-16 10:56:17,029 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1052750643] [2022-11-16 10:56:17,029 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 10:56:17,029 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 10:56:17,029 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 10:56:17,030 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 10:56:17,030 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-16 10:56:17,030 INFO L87 Difference]: Start difference. First operand 229 states and 275 transitions. Second operand has 6 states, 6 states have (on average 3.5) internal successors, (21), 5 states have internal predecessors, (21), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-16 10:56:17,136 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 10:56:17,136 INFO L93 Difference]: Finished difference Result 229 states and 274 transitions. [2022-11-16 10:56:17,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-16 10:56:17,137 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.5) internal successors, (21), 5 states have internal predecessors, (21), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 27 [2022-11-16 10:56:17,137 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 10:56:17,138 INFO L225 Difference]: With dead ends: 229 [2022-11-16 10:56:17,138 INFO L226 Difference]: Without dead ends: 229 [2022-11-16 10:56:17,139 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-16 10:56:17,139 INFO L413 NwaCegarLoop]: 184 mSDtfsCounter, 114 mSDsluCounter, 624 mSDsCounter, 0 mSdLazyCounter, 59 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 118 SdHoareTripleChecker+Valid, 808 SdHoareTripleChecker+Invalid, 59 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 59 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-16 10:56:17,140 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [118 Valid, 808 Invalid, 59 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 59 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-16 10:56:17,140 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 229 states. [2022-11-16 10:56:17,146 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 229 to 229. [2022-11-16 10:56:17,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 229 states, 146 states have (on average 1.7328767123287672) internal successors, (253), 212 states have internal predecessors, (253), 9 states have call successors, (9), 7 states have call predecessors, (9), 8 states have return successors, (12), 9 states have call predecessors, (12), 9 states have call successors, (12) [2022-11-16 10:56:17,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 229 states to 229 states and 274 transitions. [2022-11-16 10:56:17,147 INFO L78 Accepts]: Start accepts. Automaton has 229 states and 274 transitions. Word has length 27 [2022-11-16 10:56:17,148 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 10:56:17,148 INFO L495 AbstractCegarLoop]: Abstraction has 229 states and 274 transitions. [2022-11-16 10:56:17,148 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.5) internal successors, (21), 5 states have internal predecessors, (21), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-16 10:56:17,148 INFO L276 IsEmpty]: Start isEmpty. Operand 229 states and 274 transitions. [2022-11-16 10:56:17,149 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-11-16 10:56:17,149 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 10:56:17,149 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 10:56:17,168 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a381edf-ab01-41b6-92bc-f9af652b83c9/bin/uautomizer-tPACEb0tL8/mathsat -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 10:56:17,360 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a381edf-ab01-41b6-92bc-f9af652b83c9/bin/uautomizer-tPACEb0tL8/mathsat -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 10:56:17,360 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [free_reportsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 73 more)] === [2022-11-16 10:56:17,360 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 10:56:17,361 INFO L85 PathProgramCache]: Analyzing trace with hash -444952336, now seen corresponding path program 1 times [2022-11-16 10:56:17,361 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 10:56:17,361 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [646144602] [2022-11-16 10:56:17,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 10:56:17,361 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 10:56:17,361 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a381edf-ab01-41b6-92bc-f9af652b83c9/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 10:56:17,363 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a381edf-ab01-41b6-92bc-f9af652b83c9/bin/uautomizer-tPACEb0tL8/mathsat -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 10:56:17,365 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a381edf-ab01-41b6-92bc-f9af652b83c9/bin/uautomizer-tPACEb0tL8/mathsat -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 10:56:17,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:56:17,538 INFO L263 TraceCheckSpWp]: Trace formula consists of 190 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-16 10:56:17,540 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 10:56:17,545 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 10:56:17,598 INFO L321 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2022-11-16 10:56:17,598 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 20 [2022-11-16 10:56:17,662 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 10:56:17,662 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 10:56:17,662 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 10:56:17,663 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [646144602] [2022-11-16 10:56:17,663 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [646144602] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 10:56:17,663 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 10:56:17,663 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-16 10:56:17,663 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1324704690] [2022-11-16 10:56:17,663 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 10:56:17,663 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-16 10:56:17,664 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 10:56:17,664 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-16 10:56:17,664 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-11-16 10:56:17,664 INFO L87 Difference]: Start difference. First operand 229 states and 274 transitions. Second operand has 8 states, 7 states have (on average 3.857142857142857) internal successors, (27), 6 states have internal predecessors, (27), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-11-16 10:56:18,618 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 10:56:18,619 INFO L93 Difference]: Finished difference Result 242 states and 284 transitions. [2022-11-16 10:56:18,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-16 10:56:18,620 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.857142857142857) internal successors, (27), 6 states have internal predecessors, (27), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 33 [2022-11-16 10:56:18,620 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 10:56:18,621 INFO L225 Difference]: With dead ends: 242 [2022-11-16 10:56:18,621 INFO L226 Difference]: Without dead ends: 242 [2022-11-16 10:56:18,621 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 25 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2022-11-16 10:56:18,622 INFO L413 NwaCegarLoop]: 114 mSDtfsCounter, 191 mSDsluCounter, 407 mSDsCounter, 0 mSdLazyCounter, 537 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 192 SdHoareTripleChecker+Valid, 521 SdHoareTripleChecker+Invalid, 555 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 537 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-11-16 10:56:18,622 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [192 Valid, 521 Invalid, 555 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 537 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-11-16 10:56:18,623 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 242 states. [2022-11-16 10:56:18,627 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 242 to 225. [2022-11-16 10:56:18,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 225 states, 146 states have (on average 1.678082191780822) internal successors, (245), 208 states have internal predecessors, (245), 9 states have call successors, (9), 7 states have call predecessors, (9), 8 states have return successors, (12), 9 states have call predecessors, (12), 9 states have call successors, (12) [2022-11-16 10:56:18,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 225 states to 225 states and 266 transitions. [2022-11-16 10:56:18,629 INFO L78 Accepts]: Start accepts. Automaton has 225 states and 266 transitions. Word has length 33 [2022-11-16 10:56:18,629 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 10:56:18,630 INFO L495 AbstractCegarLoop]: Abstraction has 225 states and 266 transitions. [2022-11-16 10:56:18,630 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.857142857142857) internal successors, (27), 6 states have internal predecessors, (27), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-11-16 10:56:18,630 INFO L276 IsEmpty]: Start isEmpty. Operand 225 states and 266 transitions. [2022-11-16 10:56:18,630 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-11-16 10:56:18,630 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 10:56:18,631 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 10:56:18,656 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a381edf-ab01-41b6-92bc-f9af652b83c9/bin/uautomizer-tPACEb0tL8/mathsat -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 10:56:18,856 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a381edf-ab01-41b6-92bc-f9af652b83c9/bin/uautomizer-tPACEb0tL8/mathsat -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 10:56:18,857 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [free_reportsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 73 more)] === [2022-11-16 10:56:18,857 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 10:56:18,857 INFO L85 PathProgramCache]: Analyzing trace with hash -444952335, now seen corresponding path program 1 times [2022-11-16 10:56:18,857 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 10:56:18,857 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [790899011] [2022-11-16 10:56:18,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 10:56:18,858 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 10:56:18,858 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a381edf-ab01-41b6-92bc-f9af652b83c9/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 10:56:18,859 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a381edf-ab01-41b6-92bc-f9af652b83c9/bin/uautomizer-tPACEb0tL8/mathsat -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 10:56:18,879 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a381edf-ab01-41b6-92bc-f9af652b83c9/bin/uautomizer-tPACEb0tL8/mathsat -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 10:56:19,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:56:19,050 INFO L263 TraceCheckSpWp]: Trace formula consists of 190 conjuncts, 16 conjunts are in the unsatisfiable core [2022-11-16 10:56:19,052 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 10:56:19,061 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 10:56:19,067 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 10:56:19,111 WARN L855 $PredicateComparison]: unable to prove that (exists ((|ldv_zalloc_#t~malloc13#1.base| (_ BitVec 32))) (and (exists ((v_ArrVal_213 (_ BitVec 32))) (= (store |c_old(#length)| |ldv_zalloc_#t~malloc13#1.base| v_ArrVal_213) |c_#length|)) (= (select |c_old(#valid)| |ldv_zalloc_#t~malloc13#1.base|) (_ bv0 1)))) is different from true [2022-11-16 10:56:19,150 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 10:56:19,151 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2022-11-16 10:56:19,161 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-16 10:56:19,161 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2022-11-16 10:56:19,245 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 10:56:19,246 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 10:56:19,246 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 10:56:19,246 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [790899011] [2022-11-16 10:56:19,246 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [790899011] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 10:56:19,246 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 10:56:19,246 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-16 10:56:19,246 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [283886982] [2022-11-16 10:56:19,247 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 10:56:19,247 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-16 10:56:19,247 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 10:56:19,247 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-16 10:56:19,247 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=21, Unknown=1, NotChecked=8, Total=42 [2022-11-16 10:56:19,248 INFO L87 Difference]: Start difference. First operand 225 states and 266 transitions. Second operand has 7 states, 5 states have (on average 5.4) internal successors, (27), 6 states have internal predecessors, (27), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-11-16 10:56:20,194 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 10:56:20,195 INFO L93 Difference]: Finished difference Result 280 states and 309 transitions. [2022-11-16 10:56:20,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-16 10:56:20,195 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 5.4) internal successors, (27), 6 states have internal predecessors, (27), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 33 [2022-11-16 10:56:20,196 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 10:56:20,197 INFO L225 Difference]: With dead ends: 280 [2022-11-16 10:56:20,197 INFO L226 Difference]: Without dead ends: 280 [2022-11-16 10:56:20,197 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=16, Invalid=29, Unknown=1, NotChecked=10, Total=56 [2022-11-16 10:56:20,198 INFO L413 NwaCegarLoop]: 112 mSDtfsCounter, 182 mSDsluCounter, 264 mSDsCounter, 0 mSdLazyCounter, 396 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 185 SdHoareTripleChecker+Valid, 376 SdHoareTripleChecker+Invalid, 703 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 396 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 288 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-11-16 10:56:20,198 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [185 Valid, 376 Invalid, 703 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 396 Invalid, 0 Unknown, 288 Unchecked, 0.9s Time] [2022-11-16 10:56:20,199 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 280 states. [2022-11-16 10:56:20,207 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 280 to 225. [2022-11-16 10:56:20,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 225 states, 146 states have (on average 1.6506849315068493) internal successors, (241), 208 states have internal predecessors, (241), 9 states have call successors, (9), 7 states have call predecessors, (9), 8 states have return successors, (12), 9 states have call predecessors, (12), 9 states have call successors, (12) [2022-11-16 10:56:20,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 225 states to 225 states and 262 transitions. [2022-11-16 10:56:20,208 INFO L78 Accepts]: Start accepts. Automaton has 225 states and 262 transitions. Word has length 33 [2022-11-16 10:56:20,209 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 10:56:20,209 INFO L495 AbstractCegarLoop]: Abstraction has 225 states and 262 transitions. [2022-11-16 10:56:20,209 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 5 states have (on average 5.4) internal successors, (27), 6 states have internal predecessors, (27), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-11-16 10:56:20,209 INFO L276 IsEmpty]: Start isEmpty. Operand 225 states and 262 transitions. [2022-11-16 10:56:20,210 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2022-11-16 10:56:20,210 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 10:56:20,210 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 10:56:20,222 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a381edf-ab01-41b6-92bc-f9af652b83c9/bin/uautomizer-tPACEb0tL8/mathsat -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 10:56:20,422 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a381edf-ab01-41b6-92bc-f9af652b83c9/bin/uautomizer-tPACEb0tL8/mathsat -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 10:56:20,422 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr14REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [free_reportsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 73 more)] === [2022-11-16 10:56:20,423 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 10:56:20,423 INFO L85 PathProgramCache]: Analyzing trace with hash 1897494371, now seen corresponding path program 1 times [2022-11-16 10:56:20,423 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 10:56:20,423 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [872248299] [2022-11-16 10:56:20,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 10:56:20,424 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 10:56:20,424 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a381edf-ab01-41b6-92bc-f9af652b83c9/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 10:56:20,425 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a381edf-ab01-41b6-92bc-f9af652b83c9/bin/uautomizer-tPACEb0tL8/mathsat -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 10:56:20,443 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a381edf-ab01-41b6-92bc-f9af652b83c9/bin/uautomizer-tPACEb0tL8/mathsat -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 10:56:20,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:56:20,595 INFO L263 TraceCheckSpWp]: Trace formula consists of 201 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-16 10:56:20,596 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 10:56:20,626 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 10:56:20,626 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 10:56:20,626 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 10:56:20,626 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [872248299] [2022-11-16 10:56:20,627 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [872248299] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 10:56:20,627 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 10:56:20,627 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-16 10:56:20,627 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [267557519] [2022-11-16 10:56:20,627 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 10:56:20,628 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 10:56:20,629 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 10:56:20,629 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 10:56:20,629 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 10:56:20,630 INFO L87 Difference]: Start difference. First operand 225 states and 262 transitions. Second operand has 4 states, 4 states have (on average 7.25) internal successors, (29), 4 states have internal predecessors, (29), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-16 10:56:20,657 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 10:56:20,657 INFO L93 Difference]: Finished difference Result 267 states and 308 transitions. [2022-11-16 10:56:20,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 10:56:20,658 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.25) internal successors, (29), 4 states have internal predecessors, (29), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 35 [2022-11-16 10:56:20,659 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 10:56:20,661 INFO L225 Difference]: With dead ends: 267 [2022-11-16 10:56:20,661 INFO L226 Difference]: Without dead ends: 267 [2022-11-16 10:56:20,662 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 32 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 10:56:20,663 INFO L413 NwaCegarLoop]: 193 mSDtfsCounter, 37 mSDsluCounter, 381 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 574 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-16 10:56:20,663 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [38 Valid, 574 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-16 10:56:20,665 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 267 states. [2022-11-16 10:56:20,674 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 267 to 229. [2022-11-16 10:56:20,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 229 states, 150 states have (on average 1.6333333333333333) internal successors, (245), 212 states have internal predecessors, (245), 9 states have call successors, (9), 7 states have call predecessors, (9), 8 states have return successors, (12), 9 states have call predecessors, (12), 9 states have call successors, (12) [2022-11-16 10:56:20,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 229 states to 229 states and 266 transitions. [2022-11-16 10:56:20,678 INFO L78 Accepts]: Start accepts. Automaton has 229 states and 266 transitions. Word has length 35 [2022-11-16 10:56:20,678 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 10:56:20,678 INFO L495 AbstractCegarLoop]: Abstraction has 229 states and 266 transitions. [2022-11-16 10:56:20,679 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.25) internal successors, (29), 4 states have internal predecessors, (29), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-16 10:56:20,679 INFO L276 IsEmpty]: Start isEmpty. Operand 229 states and 266 transitions. [2022-11-16 10:56:20,685 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-11-16 10:56:20,685 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 10:56:20,685 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 10:56:20,704 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a381edf-ab01-41b6-92bc-f9af652b83c9/bin/uautomizer-tPACEb0tL8/mathsat -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 10:56:20,897 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a381edf-ab01-41b6-92bc-f9af652b83c9/bin/uautomizer-tPACEb0tL8/mathsat -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 10:56:20,897 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr29ASSERT_VIOLATIONMEMORY_FREE === [free_reportsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 73 more)] === [2022-11-16 10:56:20,897 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 10:56:20,897 INFO L85 PathProgramCache]: Analyzing trace with hash -1307216555, now seen corresponding path program 1 times [2022-11-16 10:56:20,898 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 10:56:20,898 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [462581972] [2022-11-16 10:56:20,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 10:56:20,898 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 10:56:20,898 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a381edf-ab01-41b6-92bc-f9af652b83c9/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 10:56:20,899 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a381edf-ab01-41b6-92bc-f9af652b83c9/bin/uautomizer-tPACEb0tL8/mathsat -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 10:56:20,901 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a381edf-ab01-41b6-92bc-f9af652b83c9/bin/uautomizer-tPACEb0tL8/mathsat -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 10:56:21,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:56:21,042 INFO L263 TraceCheckSpWp]: Trace formula consists of 194 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-16 10:56:21,043 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 10:56:21,514 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 10:56:21,514 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 10:56:21,514 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 10:56:21,514 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [462581972] [2022-11-16 10:56:21,514 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [462581972] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 10:56:21,514 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 10:56:21,514 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-16 10:56:21,515 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [117276759] [2022-11-16 10:56:21,515 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 10:56:21,515 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-16 10:56:21,515 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 10:56:21,515 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-16 10:56:21,516 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-16 10:56:21,516 INFO L87 Difference]: Start difference. First operand 229 states and 266 transitions. Second operand has 8 states, 7 states have (on average 4.285714285714286) internal successors, (30), 6 states have internal predecessors, (30), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-11-16 10:56:21,529 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 10:56:21,530 INFO L93 Difference]: Finished difference Result 248 states and 286 transitions. [2022-11-16 10:56:21,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-16 10:56:21,530 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 4.285714285714286) internal successors, (30), 6 states have internal predecessors, (30), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 36 [2022-11-16 10:56:21,531 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 10:56:21,532 INFO L225 Difference]: With dead ends: 248 [2022-11-16 10:56:21,532 INFO L226 Difference]: Without dead ends: 248 [2022-11-16 10:56:21,535 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-16 10:56:21,535 INFO L413 NwaCegarLoop]: 184 mSDtfsCounter, 55 mSDsluCounter, 526 mSDsCounter, 0 mSdLazyCounter, 1 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 710 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 42 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-16 10:56:21,536 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [55 Valid, 710 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1 Invalid, 0 Unknown, 42 Unchecked, 0.0s Time] [2022-11-16 10:56:21,538 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 248 states. [2022-11-16 10:56:21,544 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 248 to 248. [2022-11-16 10:56:21,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 248 states, 168 states have (on average 1.5773809523809523) internal successors, (265), 230 states have internal predecessors, (265), 9 states have call successors, (9), 8 states have call predecessors, (9), 9 states have return successors, (12), 9 states have call predecessors, (12), 9 states have call successors, (12) [2022-11-16 10:56:21,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 248 states to 248 states and 286 transitions. [2022-11-16 10:56:21,546 INFO L78 Accepts]: Start accepts. Automaton has 248 states and 286 transitions. Word has length 36 [2022-11-16 10:56:21,547 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 10:56:21,547 INFO L495 AbstractCegarLoop]: Abstraction has 248 states and 286 transitions. [2022-11-16 10:56:21,547 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 4.285714285714286) internal successors, (30), 6 states have internal predecessors, (30), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-11-16 10:56:21,547 INFO L276 IsEmpty]: Start isEmpty. Operand 248 states and 286 transitions. [2022-11-16 10:56:21,549 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2022-11-16 10:56:21,549 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 10:56:21,549 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 10:56:21,562 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a381edf-ab01-41b6-92bc-f9af652b83c9/bin/uautomizer-tPACEb0tL8/mathsat -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 10:56:21,761 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a381edf-ab01-41b6-92bc-f9af652b83c9/bin/uautomizer-tPACEb0tL8/mathsat -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 10:56:21,762 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr36ASSERT_VIOLATIONMEMORY_FREE === [free_reportsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 73 more)] === [2022-11-16 10:56:21,762 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 10:56:21,762 INFO L85 PathProgramCache]: Analyzing trace with hash 359927496, now seen corresponding path program 1 times [2022-11-16 10:56:21,762 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 10:56:21,763 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1859975928] [2022-11-16 10:56:21,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 10:56:21,763 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 10:56:21,763 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a381edf-ab01-41b6-92bc-f9af652b83c9/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 10:56:21,764 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a381edf-ab01-41b6-92bc-f9af652b83c9/bin/uautomizer-tPACEb0tL8/mathsat -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 10:56:21,767 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a381edf-ab01-41b6-92bc-f9af652b83c9/bin/uautomizer-tPACEb0tL8/mathsat -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 10:56:21,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:56:21,919 INFO L263 TraceCheckSpWp]: Trace formula consists of 202 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-16 10:56:21,920 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 10:56:21,937 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 10:56:21,937 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 10:56:21,937 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 10:56:21,937 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1859975928] [2022-11-16 10:56:21,937 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1859975928] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 10:56:21,937 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 10:56:21,937 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-16 10:56:21,938 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1575801202] [2022-11-16 10:56:21,938 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 10:56:21,938 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 10:56:21,938 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 10:56:21,939 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 10:56:21,939 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 10:56:21,939 INFO L87 Difference]: Start difference. First operand 248 states and 286 transitions. Second operand has 4 states, 4 states have (on average 8.5) internal successors, (34), 4 states have internal predecessors, (34), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-16 10:56:21,969 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 10:56:21,969 INFO L93 Difference]: Finished difference Result 271 states and 311 transitions. [2022-11-16 10:56:21,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 10:56:21,970 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.5) internal successors, (34), 4 states have internal predecessors, (34), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 40 [2022-11-16 10:56:21,970 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 10:56:21,972 INFO L225 Difference]: With dead ends: 271 [2022-11-16 10:56:21,972 INFO L226 Difference]: Without dead ends: 271 [2022-11-16 10:56:21,972 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 37 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 10:56:21,973 INFO L413 NwaCegarLoop]: 193 mSDtfsCounter, 43 mSDsluCounter, 379 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 572 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-16 10:56:21,973 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [43 Valid, 572 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-16 10:56:21,974 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 271 states. [2022-11-16 10:56:21,980 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 271 to 250. [2022-11-16 10:56:21,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 250 states, 170 states have (on average 1.5705882352941176) internal successors, (267), 232 states have internal predecessors, (267), 9 states have call successors, (9), 8 states have call predecessors, (9), 9 states have return successors, (12), 9 states have call predecessors, (12), 9 states have call successors, (12) [2022-11-16 10:56:21,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 250 states to 250 states and 288 transitions. [2022-11-16 10:56:21,982 INFO L78 Accepts]: Start accepts. Automaton has 250 states and 288 transitions. Word has length 40 [2022-11-16 10:56:21,983 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 10:56:21,983 INFO L495 AbstractCegarLoop]: Abstraction has 250 states and 288 transitions. [2022-11-16 10:56:21,983 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.5) internal successors, (34), 4 states have internal predecessors, (34), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-16 10:56:21,983 INFO L276 IsEmpty]: Start isEmpty. Operand 250 states and 288 transitions. [2022-11-16 10:56:21,985 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2022-11-16 10:56:21,985 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 10:56:21,986 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 10:56:22,007 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a381edf-ab01-41b6-92bc-f9af652b83c9/bin/uautomizer-tPACEb0tL8/mathsat -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 10:56:22,203 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a381edf-ab01-41b6-92bc-f9af652b83c9/bin/uautomizer-tPACEb0tL8/mathsat -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 10:56:22,204 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr14REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [free_reportsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 73 more)] === [2022-11-16 10:56:22,204 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 10:56:22,204 INFO L85 PathProgramCache]: Analyzing trace with hash -2125965028, now seen corresponding path program 1 times [2022-11-16 10:56:22,204 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 10:56:22,204 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [830509069] [2022-11-16 10:56:22,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 10:56:22,204 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 10:56:22,205 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a381edf-ab01-41b6-92bc-f9af652b83c9/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 10:56:22,205 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a381edf-ab01-41b6-92bc-f9af652b83c9/bin/uautomizer-tPACEb0tL8/mathsat -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 10:56:22,207 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a381edf-ab01-41b6-92bc-f9af652b83c9/bin/uautomizer-tPACEb0tL8/mathsat -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 10:56:22,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:56:22,397 INFO L263 TraceCheckSpWp]: Trace formula consists of 291 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-16 10:56:22,399 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 10:56:22,405 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2022-11-16 10:56:22,511 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 10:56:22,511 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 10:56:22,514 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 10:56:22,514 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [830509069] [2022-11-16 10:56:22,514 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [830509069] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 10:56:22,514 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 10:56:22,514 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-16 10:56:22,515 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [215977699] [2022-11-16 10:56:22,515 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 10:56:22,516 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-16 10:56:22,516 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 10:56:22,516 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-16 10:56:22,516 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-16 10:56:22,516 INFO L87 Difference]: Start difference. First operand 250 states and 288 transitions. Second operand has 7 states, 6 states have (on average 6.0) internal successors, (36), 6 states have internal predecessors, (36), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-16 10:56:23,504 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 10:56:23,505 INFO L93 Difference]: Finished difference Result 292 states and 323 transitions. [2022-11-16 10:56:23,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-16 10:56:23,505 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 6.0) internal successors, (36), 6 states have internal predecessors, (36), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 42 [2022-11-16 10:56:23,506 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 10:56:23,507 INFO L225 Difference]: With dead ends: 292 [2022-11-16 10:56:23,507 INFO L226 Difference]: Without dead ends: 292 [2022-11-16 10:56:23,507 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2022-11-16 10:56:23,508 INFO L413 NwaCegarLoop]: 185 mSDtfsCounter, 124 mSDsluCounter, 626 mSDsCounter, 0 mSdLazyCounter, 451 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 124 SdHoareTripleChecker+Valid, 811 SdHoareTripleChecker+Invalid, 454 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 451 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-11-16 10:56:23,508 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [124 Valid, 811 Invalid, 454 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 451 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-11-16 10:56:23,509 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 292 states. [2022-11-16 10:56:23,514 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 292 to 249. [2022-11-16 10:56:23,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 249 states, 170 states have (on average 1.5529411764705883) internal successors, (264), 231 states have internal predecessors, (264), 9 states have call successors, (9), 8 states have call predecessors, (9), 9 states have return successors, (12), 9 states have call predecessors, (12), 9 states have call successors, (12) [2022-11-16 10:56:23,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 249 states to 249 states and 285 transitions. [2022-11-16 10:56:23,516 INFO L78 Accepts]: Start accepts. Automaton has 249 states and 285 transitions. Word has length 42 [2022-11-16 10:56:23,516 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 10:56:23,516 INFO L495 AbstractCegarLoop]: Abstraction has 249 states and 285 transitions. [2022-11-16 10:56:23,516 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 6.0) internal successors, (36), 6 states have internal predecessors, (36), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-16 10:56:23,516 INFO L276 IsEmpty]: Start isEmpty. Operand 249 states and 285 transitions. [2022-11-16 10:56:23,517 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2022-11-16 10:56:23,517 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 10:56:23,517 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 10:56:23,539 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a381edf-ab01-41b6-92bc-f9af652b83c9/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2022-11-16 10:56:23,730 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a381edf-ab01-41b6-92bc-f9af652b83c9/bin/uautomizer-tPACEb0tL8/mathsat -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 10:56:23,730 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr15REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [free_reportsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 73 more)] === [2022-11-16 10:56:23,730 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 10:56:23,731 INFO L85 PathProgramCache]: Analyzing trace with hash -2125965027, now seen corresponding path program 1 times [2022-11-16 10:56:23,731 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 10:56:23,731 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2109373730] [2022-11-16 10:56:23,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 10:56:23,731 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 10:56:23,731 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a381edf-ab01-41b6-92bc-f9af652b83c9/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 10:56:23,732 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a381edf-ab01-41b6-92bc-f9af652b83c9/bin/uautomizer-tPACEb0tL8/mathsat -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 10:56:23,737 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a381edf-ab01-41b6-92bc-f9af652b83c9/bin/uautomizer-tPACEb0tL8/mathsat -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 10:56:23,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:56:23,942 INFO L263 TraceCheckSpWp]: Trace formula consists of 291 conjuncts, 16 conjunts are in the unsatisfiable core [2022-11-16 10:56:23,943 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 10:56:23,949 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 10:56:24,136 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 10:56:24,137 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 10:56:24,137 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 10:56:24,137 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2109373730] [2022-11-16 10:56:24,137 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2109373730] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 10:56:24,137 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 10:56:24,137 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-16 10:56:24,137 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1035521960] [2022-11-16 10:56:24,137 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 10:56:24,138 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-16 10:56:24,138 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 10:56:24,138 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-16 10:56:24,138 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-16 10:56:24,138 INFO L87 Difference]: Start difference. First operand 249 states and 285 transitions. Second operand has 7 states, 6 states have (on average 6.0) internal successors, (36), 6 states have internal predecessors, (36), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-16 10:56:25,362 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 10:56:25,362 INFO L93 Difference]: Finished difference Result 318 states and 349 transitions. [2022-11-16 10:56:25,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-16 10:56:25,363 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 6.0) internal successors, (36), 6 states have internal predecessors, (36), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 42 [2022-11-16 10:56:25,363 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 10:56:25,364 INFO L225 Difference]: With dead ends: 318 [2022-11-16 10:56:25,364 INFO L226 Difference]: Without dead ends: 318 [2022-11-16 10:56:25,364 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2022-11-16 10:56:25,365 INFO L413 NwaCegarLoop]: 188 mSDtfsCounter, 146 mSDsluCounter, 651 mSDsCounter, 0 mSdLazyCounter, 481 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 147 SdHoareTripleChecker+Valid, 839 SdHoareTripleChecker+Invalid, 486 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 481 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-11-16 10:56:25,365 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [147 Valid, 839 Invalid, 486 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 481 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-11-16 10:56:25,366 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 318 states. [2022-11-16 10:56:25,372 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 318 to 249. [2022-11-16 10:56:25,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 249 states, 170 states have (on average 1.5411764705882354) internal successors, (262), 231 states have internal predecessors, (262), 9 states have call successors, (9), 8 states have call predecessors, (9), 9 states have return successors, (12), 9 states have call predecessors, (12), 9 states have call successors, (12) [2022-11-16 10:56:25,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 249 states to 249 states and 283 transitions. [2022-11-16 10:56:25,374 INFO L78 Accepts]: Start accepts. Automaton has 249 states and 283 transitions. Word has length 42 [2022-11-16 10:56:25,374 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 10:56:25,374 INFO L495 AbstractCegarLoop]: Abstraction has 249 states and 283 transitions. [2022-11-16 10:56:25,374 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 6.0) internal successors, (36), 6 states have internal predecessors, (36), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-16 10:56:25,374 INFO L276 IsEmpty]: Start isEmpty. Operand 249 states and 283 transitions. [2022-11-16 10:56:25,375 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2022-11-16 10:56:25,375 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 10:56:25,376 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 10:56:25,392 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a381edf-ab01-41b6-92bc-f9af652b83c9/bin/uautomizer-tPACEb0tL8/mathsat -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)] Ended with exit code 0 [2022-11-16 10:56:25,588 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a381edf-ab01-41b6-92bc-f9af652b83c9/bin/uautomizer-tPACEb0tL8/mathsat -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 10:56:25,588 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr39REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [free_reportsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 73 more)] === [2022-11-16 10:56:25,588 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 10:56:25,588 INFO L85 PathProgramCache]: Analyzing trace with hash -2001953137, now seen corresponding path program 1 times [2022-11-16 10:56:25,589 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 10:56:25,589 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2071027542] [2022-11-16 10:56:25,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 10:56:25,589 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 10:56:25,589 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a381edf-ab01-41b6-92bc-f9af652b83c9/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 10:56:25,590 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a381edf-ab01-41b6-92bc-f9af652b83c9/bin/uautomizer-tPACEb0tL8/mathsat -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 10:56:25,596 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a381edf-ab01-41b6-92bc-f9af652b83c9/bin/uautomizer-tPACEb0tL8/mathsat -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 10:56:25,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:56:25,822 INFO L263 TraceCheckSpWp]: Trace formula consists of 213 conjuncts, 25 conjunts are in the unsatisfiable core [2022-11-16 10:56:25,824 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 10:56:25,987 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-11-16 10:56:25,988 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 19 treesize of output 27 [2022-11-16 10:56:26,090 INFO L321 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2022-11-16 10:56:26,090 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 24 [2022-11-16 10:56:26,289 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-11-16 10:56:26,290 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 19 treesize of output 27 [2022-11-16 10:56:26,627 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 10:56:26,646 INFO L321 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2022-11-16 10:56:26,647 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 17 treesize of output 31 [2022-11-16 10:56:26,729 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 10:56:26,729 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 10:56:26,729 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 10:56:26,729 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2071027542] [2022-11-16 10:56:26,729 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2071027542] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 10:56:26,729 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 10:56:26,729 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-11-16 10:56:26,729 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1654092670] [2022-11-16 10:56:26,730 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 10:56:26,730 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-16 10:56:26,730 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 10:56:26,730 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-16 10:56:26,730 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2022-11-16 10:56:26,731 INFO L87 Difference]: Start difference. First operand 249 states and 283 transitions. Second operand has 14 states, 12 states have (on average 3.0) internal successors, (36), 11 states have internal predecessors, (36), 2 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-11-16 10:56:27,606 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 10:56:27,606 INFO L93 Difference]: Finished difference Result 307 states and 343 transitions. [2022-11-16 10:56:27,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-11-16 10:56:27,607 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 12 states have (on average 3.0) internal successors, (36), 11 states have internal predecessors, (36), 2 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 42 [2022-11-16 10:56:27,607 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 10:56:27,608 INFO L225 Difference]: With dead ends: 307 [2022-11-16 10:56:27,608 INFO L226 Difference]: Without dead ends: 307 [2022-11-16 10:56:27,609 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 29 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=65, Invalid=315, Unknown=0, NotChecked=0, Total=380 [2022-11-16 10:56:27,609 INFO L413 NwaCegarLoop]: 142 mSDtfsCounter, 109 mSDsluCounter, 851 mSDsCounter, 0 mSdLazyCounter, 445 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 109 SdHoareTripleChecker+Valid, 993 SdHoareTripleChecker+Invalid, 981 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 445 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 518 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-16 10:56:27,610 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [109 Valid, 993 Invalid, 981 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 445 Invalid, 0 Unknown, 518 Unchecked, 0.7s Time] [2022-11-16 10:56:27,610 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 307 states. [2022-11-16 10:56:27,615 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 307 to 268. [2022-11-16 10:56:27,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 268 states, 187 states have (on average 1.53475935828877) internal successors, (287), 248 states have internal predecessors, (287), 10 states have call successors, (10), 9 states have call predecessors, (10), 10 states have return successors, (14), 10 states have call predecessors, (14), 10 states have call successors, (14) [2022-11-16 10:56:27,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 268 states to 268 states and 311 transitions. [2022-11-16 10:56:27,617 INFO L78 Accepts]: Start accepts. Automaton has 268 states and 311 transitions. Word has length 42 [2022-11-16 10:56:27,617 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 10:56:27,618 INFO L495 AbstractCegarLoop]: Abstraction has 268 states and 311 transitions. [2022-11-16 10:56:27,618 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 12 states have (on average 3.0) internal successors, (36), 11 states have internal predecessors, (36), 2 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-11-16 10:56:27,618 INFO L276 IsEmpty]: Start isEmpty. Operand 268 states and 311 transitions. [2022-11-16 10:56:27,618 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2022-11-16 10:56:27,618 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 10:56:27,619 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 10:56:27,631 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a381edf-ab01-41b6-92bc-f9af652b83c9/bin/uautomizer-tPACEb0tL8/mathsat -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 10:56:27,831 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a381edf-ab01-41b6-92bc-f9af652b83c9/bin/uautomizer-tPACEb0tL8/mathsat -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 10:56:27,831 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr40REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [free_reportsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 73 more)] === [2022-11-16 10:56:27,832 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 10:56:27,832 INFO L85 PathProgramCache]: Analyzing trace with hash -2001953136, now seen corresponding path program 1 times [2022-11-16 10:56:27,832 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 10:56:27,832 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [331138358] [2022-11-16 10:56:27,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 10:56:27,832 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 10:56:27,832 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a381edf-ab01-41b6-92bc-f9af652b83c9/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 10:56:27,833 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a381edf-ab01-41b6-92bc-f9af652b83c9/bin/uautomizer-tPACEb0tL8/mathsat -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 10:56:27,840 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a381edf-ab01-41b6-92bc-f9af652b83c9/bin/uautomizer-tPACEb0tL8/mathsat -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 10:56:28,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:56:28,048 INFO L263 TraceCheckSpWp]: Trace formula consists of 213 conjuncts, 33 conjunts are in the unsatisfiable core [2022-11-16 10:56:28,051 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 10:56:30,228 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 10:56:30,229 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2022-11-16 10:56:30,389 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 10:56:30,390 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2022-11-16 10:56:30,548 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-11-16 10:56:30,548 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 14 [2022-11-16 10:56:30,778 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 10:56:30,778 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 10:56:30,779 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 10:56:30,779 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [331138358] [2022-11-16 10:56:30,779 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [331138358] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 10:56:30,779 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 10:56:30,779 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-16 10:56:30,779 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [167312075] [2022-11-16 10:56:30,779 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 10:56:30,780 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-16 10:56:30,780 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 10:56:30,780 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-16 10:56:30,780 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=104, Unknown=2, NotChecked=0, Total=132 [2022-11-16 10:56:30,780 INFO L87 Difference]: Start difference. First operand 268 states and 311 transitions. Second operand has 12 states, 11 states have (on average 3.272727272727273) internal successors, (36), 9 states have internal predecessors, (36), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-16 10:56:36,869 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 10:56:36,870 INFO L93 Difference]: Finished difference Result 306 states and 343 transitions. [2022-11-16 10:56:36,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-16 10:56:36,870 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 3.272727272727273) internal successors, (36), 9 states have internal predecessors, (36), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) Word has length 42 [2022-11-16 10:56:36,870 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 10:56:36,872 INFO L225 Difference]: With dead ends: 306 [2022-11-16 10:56:36,872 INFO L226 Difference]: Without dead ends: 306 [2022-11-16 10:56:36,872 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 30 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 6.5s TimeCoverageRelationStatistics Valid=74, Invalid=300, Unknown=6, NotChecked=0, Total=380 [2022-11-16 10:56:36,873 INFO L413 NwaCegarLoop]: 79 mSDtfsCounter, 654 mSDsluCounter, 401 mSDsCounter, 0 mSdLazyCounter, 788 mSolverCounterSat, 73 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 657 SdHoareTripleChecker+Valid, 480 SdHoareTripleChecker+Invalid, 1050 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 73 IncrementalHoareTripleChecker+Valid, 788 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 189 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-11-16 10:56:36,873 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [657 Valid, 480 Invalid, 1050 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [73 Valid, 788 Invalid, 0 Unknown, 189 Unchecked, 1.8s Time] [2022-11-16 10:56:36,874 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 306 states. [2022-11-16 10:56:36,878 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 306 to 257. [2022-11-16 10:56:36,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 257 states, 180 states have (on average 1.5055555555555555) internal successors, (271), 238 states have internal predecessors, (271), 9 states have call successors, (9), 8 states have call predecessors, (9), 9 states have return successors, (12), 10 states have call predecessors, (12), 9 states have call successors, (12) [2022-11-16 10:56:36,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 257 states to 257 states and 292 transitions. [2022-11-16 10:56:36,881 INFO L78 Accepts]: Start accepts. Automaton has 257 states and 292 transitions. Word has length 42 [2022-11-16 10:56:36,881 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 10:56:36,881 INFO L495 AbstractCegarLoop]: Abstraction has 257 states and 292 transitions. [2022-11-16 10:56:36,881 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 3.272727272727273) internal successors, (36), 9 states have internal predecessors, (36), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-16 10:56:36,881 INFO L276 IsEmpty]: Start isEmpty. Operand 257 states and 292 transitions. [2022-11-16 10:56:36,882 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2022-11-16 10:56:36,882 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 10:56:36,882 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 10:56:36,899 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a381edf-ab01-41b6-92bc-f9af652b83c9/bin/uautomizer-tPACEb0tL8/mathsat -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 10:56:37,082 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a381edf-ab01-41b6-92bc-f9af652b83c9/bin/uautomizer-tPACEb0tL8/mathsat -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 10:56:37,083 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr46ASSERT_VIOLATIONMEMORY_LEAK === [free_reportsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 73 more)] === [2022-11-16 10:56:37,083 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 10:56:37,083 INFO L85 PathProgramCache]: Analyzing trace with hash -1930984993, now seen corresponding path program 1 times [2022-11-16 10:56:37,083 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 10:56:37,083 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1201821057] [2022-11-16 10:56:37,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 10:56:37,084 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 10:56:37,084 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a381edf-ab01-41b6-92bc-f9af652b83c9/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 10:56:37,085 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a381edf-ab01-41b6-92bc-f9af652b83c9/bin/uautomizer-tPACEb0tL8/mathsat -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 10:56:37,088 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a381edf-ab01-41b6-92bc-f9af652b83c9/bin/uautomizer-tPACEb0tL8/mathsat -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 10:56:37,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:56:37,234 INFO L263 TraceCheckSpWp]: Trace formula consists of 206 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-16 10:56:37,235 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 10:56:37,251 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 10:56:37,251 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 10:56:37,251 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 10:56:37,251 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1201821057] [2022-11-16 10:56:37,251 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1201821057] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 10:56:37,251 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 10:56:37,252 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-16 10:56:37,252 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1805476685] [2022-11-16 10:56:37,252 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 10:56:37,252 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 10:56:37,252 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 10:56:37,253 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 10:56:37,253 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 10:56:37,253 INFO L87 Difference]: Start difference. First operand 257 states and 292 transitions. Second operand has 4 states, 4 states have (on average 9.25) internal successors, (37), 4 states have internal predecessors, (37), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-16 10:56:37,295 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 10:56:37,295 INFO L93 Difference]: Finished difference Result 281 states and 315 transitions. [2022-11-16 10:56:37,295 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 10:56:37,296 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 9.25) internal successors, (37), 4 states have internal predecessors, (37), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 43 [2022-11-16 10:56:37,296 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 10:56:37,297 INFO L225 Difference]: With dead ends: 281 [2022-11-16 10:56:37,297 INFO L226 Difference]: Without dead ends: 281 [2022-11-16 10:56:37,297 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 40 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 10:56:37,298 INFO L413 NwaCegarLoop]: 190 mSDtfsCounter, 48 mSDsluCounter, 362 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 552 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-16 10:56:37,298 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [49 Valid, 552 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-16 10:56:37,299 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 281 states. [2022-11-16 10:56:37,303 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 281 to 259. [2022-11-16 10:56:37,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 259 states, 182 states have (on average 1.4945054945054945) internal successors, (272), 240 states have internal predecessors, (272), 9 states have call successors, (9), 8 states have call predecessors, (9), 9 states have return successors, (12), 10 states have call predecessors, (12), 9 states have call successors, (12) [2022-11-16 10:56:37,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 259 states to 259 states and 293 transitions. [2022-11-16 10:56:37,305 INFO L78 Accepts]: Start accepts. Automaton has 259 states and 293 transitions. Word has length 43 [2022-11-16 10:56:37,305 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 10:56:37,306 INFO L495 AbstractCegarLoop]: Abstraction has 259 states and 293 transitions. [2022-11-16 10:56:37,306 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.25) internal successors, (37), 4 states have internal predecessors, (37), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-16 10:56:37,306 INFO L276 IsEmpty]: Start isEmpty. Operand 259 states and 293 transitions. [2022-11-16 10:56:37,306 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2022-11-16 10:56:37,306 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 10:56:37,307 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 10:56:37,323 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a381edf-ab01-41b6-92bc-f9af652b83c9/bin/uautomizer-tPACEb0tL8/mathsat -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 10:56:37,523 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a381edf-ab01-41b6-92bc-f9af652b83c9/bin/uautomizer-tPACEb0tL8/mathsat -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 10:56:37,523 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting free_reportsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [free_reportsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 73 more)] === [2022-11-16 10:56:37,523 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 10:56:37,523 INFO L85 PathProgramCache]: Analyzing trace with hash -269786093, now seen corresponding path program 1 times [2022-11-16 10:56:37,524 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 10:56:37,524 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [419851505] [2022-11-16 10:56:37,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 10:56:37,524 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 10:56:37,524 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a381edf-ab01-41b6-92bc-f9af652b83c9/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 10:56:37,525 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a381edf-ab01-41b6-92bc-f9af652b83c9/bin/uautomizer-tPACEb0tL8/mathsat -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 10:56:37,536 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a381edf-ab01-41b6-92bc-f9af652b83c9/bin/uautomizer-tPACEb0tL8/mathsat -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 10:56:37,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:56:37,772 INFO L263 TraceCheckSpWp]: Trace formula consists of 231 conjuncts, 42 conjunts are in the unsatisfiable core [2022-11-16 10:56:37,775 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 10:56:37,815 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 10:56:38,034 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-16 10:56:38,136 INFO L321 Elim1Store]: treesize reduction 70, result has 30.7 percent of original size [2022-11-16 10:56:38,136 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 30 treesize of output 51 [2022-11-16 10:56:38,218 INFO L321 Elim1Store]: treesize reduction 13, result has 7.1 percent of original size [2022-11-16 10:56:38,219 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 16 [2022-11-16 10:56:38,452 INFO L321 Elim1Store]: treesize reduction 92, result has 31.3 percent of original size [2022-11-16 10:56:38,453 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 7 case distinctions, treesize of input 37 treesize of output 67 [2022-11-16 10:56:38,720 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 32 [2022-11-16 10:56:38,917 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 32 [2022-11-16 10:56:39,301 INFO L321 Elim1Store]: treesize reduction 13, result has 7.1 percent of original size [2022-11-16 10:56:39,301 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 5 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 35 treesize of output 48 [2022-11-16 10:56:39,394 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2022-11-16 10:56:39,505 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 10:56:39,505 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 10:56:39,505 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 10:56:39,506 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [419851505] [2022-11-16 10:56:39,506 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [419851505] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 10:56:39,506 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 10:56:39,506 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2022-11-16 10:56:39,506 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1069931179] [2022-11-16 10:56:39,506 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 10:56:39,506 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-16 10:56:39,507 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 10:56:39,507 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-16 10:56:39,507 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=281, Unknown=0, NotChecked=0, Total=342 [2022-11-16 10:56:39,507 INFO L87 Difference]: Start difference. First operand 259 states and 293 transitions. Second operand has 19 states, 15 states have (on average 2.533333333333333) internal successors, (38), 14 states have internal predecessors, (38), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-16 10:56:41,281 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 10:56:41,281 INFO L93 Difference]: Finished difference Result 339 states and 380 transitions. [2022-11-16 10:56:41,281 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-11-16 10:56:41,282 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 15 states have (on average 2.533333333333333) internal successors, (38), 14 states have internal predecessors, (38), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 45 [2022-11-16 10:56:41,282 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 10:56:41,283 INFO L225 Difference]: With dead ends: 339 [2022-11-16 10:56:41,283 INFO L226 Difference]: Without dead ends: 339 [2022-11-16 10:56:41,284 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 26 SyntacticMatches, 2 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 183 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=145, Invalid=725, Unknown=0, NotChecked=0, Total=870 [2022-11-16 10:56:41,284 INFO L413 NwaCegarLoop]: 142 mSDtfsCounter, 258 mSDsluCounter, 811 mSDsCounter, 0 mSdLazyCounter, 583 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 260 SdHoareTripleChecker+Valid, 953 SdHoareTripleChecker+Invalid, 767 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 583 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 157 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-11-16 10:56:41,284 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [260 Valid, 953 Invalid, 767 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 583 Invalid, 0 Unknown, 157 Unchecked, 1.2s Time] [2022-11-16 10:56:41,285 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 339 states. [2022-11-16 10:56:41,290 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 339 to 278. [2022-11-16 10:56:41,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 278 states, 197 states have (on average 1.5076142131979695) internal successors, (297), 257 states have internal predecessors, (297), 11 states have call successors, (11), 9 states have call predecessors, (11), 11 states have return successors, (15), 11 states have call predecessors, (15), 11 states have call successors, (15) [2022-11-16 10:56:41,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 278 states to 278 states and 323 transitions. [2022-11-16 10:56:41,292 INFO L78 Accepts]: Start accepts. Automaton has 278 states and 323 transitions. Word has length 45 [2022-11-16 10:56:41,292 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 10:56:41,292 INFO L495 AbstractCegarLoop]: Abstraction has 278 states and 323 transitions. [2022-11-16 10:56:41,293 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 15 states have (on average 2.533333333333333) internal successors, (38), 14 states have internal predecessors, (38), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-16 10:56:41,293 INFO L276 IsEmpty]: Start isEmpty. Operand 278 states and 323 transitions. [2022-11-16 10:56:41,293 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2022-11-16 10:56:41,293 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 10:56:41,294 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 10:56:41,314 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a381edf-ab01-41b6-92bc-f9af652b83c9/bin/uautomizer-tPACEb0tL8/mathsat -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 10:56:41,509 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a381edf-ab01-41b6-92bc-f9af652b83c9/bin/uautomizer-tPACEb0tL8/mathsat -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 10:56:41,509 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting free_reportsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [free_reportsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 73 more)] === [2022-11-16 10:56:41,510 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 10:56:41,510 INFO L85 PathProgramCache]: Analyzing trace with hash -269786092, now seen corresponding path program 1 times [2022-11-16 10:56:41,510 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 10:56:41,510 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1032366827] [2022-11-16 10:56:41,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 10:56:41,510 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 10:56:41,510 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a381edf-ab01-41b6-92bc-f9af652b83c9/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 10:56:41,511 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a381edf-ab01-41b6-92bc-f9af652b83c9/bin/uautomizer-tPACEb0tL8/mathsat -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 10:56:41,512 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a381edf-ab01-41b6-92bc-f9af652b83c9/bin/uautomizer-tPACEb0tL8/mathsat -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 10:56:41,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:56:41,765 INFO L263 TraceCheckSpWp]: Trace formula consists of 231 conjuncts, 64 conjunts are in the unsatisfiable core [2022-11-16 10:56:41,768 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 10:56:41,861 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 10:56:41,879 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 10:56:42,325 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-16 10:56:42,336 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-16 10:56:42,434 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 10:56:42,435 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2022-11-16 10:56:42,444 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 10:56:42,476 INFO L321 Elim1Store]: treesize reduction 48, result has 29.4 percent of original size [2022-11-16 10:56:42,476 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 30 treesize of output 47 [2022-11-16 10:56:42,595 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 3 [2022-11-16 10:56:42,609 INFO L321 Elim1Store]: treesize reduction 13, result has 7.1 percent of original size [2022-11-16 10:56:42,609 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 11 [2022-11-16 10:56:42,862 INFO L321 Elim1Store]: treesize reduction 26, result has 33.3 percent of original size [2022-11-16 10:56:42,862 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 24 treesize of output 26 [2022-11-16 10:56:42,878 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2022-11-16 10:56:43,070 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 24 [2022-11-16 10:56:43,082 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-16 10:56:43,175 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 24 [2022-11-16 10:56:43,185 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-16 10:56:43,445 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-11-16 10:56:43,449 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2022-11-16 10:56:43,606 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 10:56:43,606 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 10:56:43,607 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 10:56:43,607 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1032366827] [2022-11-16 10:56:43,607 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1032366827] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 10:56:43,607 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 10:56:43,607 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-11-16 10:56:43,607 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1301718614] [2022-11-16 10:56:43,607 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 10:56:43,607 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-11-16 10:56:43,608 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 10:56:43,608 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-11-16 10:56:43,608 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=364, Unknown=0, NotChecked=0, Total=420 [2022-11-16 10:56:43,608 INFO L87 Difference]: Start difference. First operand 278 states and 323 transitions. Second operand has 21 states, 17 states have (on average 2.235294117647059) internal successors, (38), 16 states have internal predecessors, (38), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-16 10:56:46,774 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 10:56:46,774 INFO L93 Difference]: Finished difference Result 341 states and 376 transitions. [2022-11-16 10:56:46,774 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2022-11-16 10:56:46,775 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 17 states have (on average 2.235294117647059) internal successors, (38), 16 states have internal predecessors, (38), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 45 [2022-11-16 10:56:46,775 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 10:56:46,776 INFO L225 Difference]: With dead ends: 341 [2022-11-16 10:56:46,776 INFO L226 Difference]: Without dead ends: 341 [2022-11-16 10:56:46,776 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 24 SyntacticMatches, 1 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 234 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=156, Invalid=1034, Unknown=0, NotChecked=0, Total=1190 [2022-11-16 10:56:46,777 INFO L413 NwaCegarLoop]: 140 mSDtfsCounter, 233 mSDsluCounter, 1409 mSDsCounter, 0 mSdLazyCounter, 992 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 234 SdHoareTripleChecker+Valid, 1549 SdHoareTripleChecker+Invalid, 1454 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 992 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 432 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-11-16 10:56:46,777 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [234 Valid, 1549 Invalid, 1454 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 992 Invalid, 0 Unknown, 432 Unchecked, 2.2s Time] [2022-11-16 10:56:46,778 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 341 states. [2022-11-16 10:56:46,783 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 341 to 287. [2022-11-16 10:56:46,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 287 states, 205 states have (on average 1.5219512195121951) internal successors, (312), 265 states have internal predecessors, (312), 11 states have call successors, (11), 10 states have call predecessors, (11), 12 states have return successors, (15), 11 states have call predecessors, (15), 11 states have call successors, (15) [2022-11-16 10:56:46,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 287 states to 287 states and 338 transitions. [2022-11-16 10:56:46,785 INFO L78 Accepts]: Start accepts. Automaton has 287 states and 338 transitions. Word has length 45 [2022-11-16 10:56:46,785 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 10:56:46,785 INFO L495 AbstractCegarLoop]: Abstraction has 287 states and 338 transitions. [2022-11-16 10:56:46,785 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 17 states have (on average 2.235294117647059) internal successors, (38), 16 states have internal predecessors, (38), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-16 10:56:46,785 INFO L276 IsEmpty]: Start isEmpty. Operand 287 states and 338 transitions. [2022-11-16 10:56:46,786 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2022-11-16 10:56:46,786 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 10:56:46,786 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 10:56:46,802 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a381edf-ab01-41b6-92bc-f9af652b83c9/bin/uautomizer-tPACEb0tL8/mathsat -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 10:56:46,998 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a381edf-ab01-41b6-92bc-f9af652b83c9/bin/uautomizer-tPACEb0tL8/mathsat -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 10:56:46,998 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr18REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [free_reportsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 73 more)] === [2022-11-16 10:56:46,999 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 10:56:46,999 INFO L85 PathProgramCache]: Analyzing trace with hash -1036278110, now seen corresponding path program 1 times [2022-11-16 10:56:46,999 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 10:56:46,999 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1742820363] [2022-11-16 10:56:46,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 10:56:46,999 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 10:56:47,000 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a381edf-ab01-41b6-92bc-f9af652b83c9/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 10:56:47,000 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a381edf-ab01-41b6-92bc-f9af652b83c9/bin/uautomizer-tPACEb0tL8/mathsat -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 10:56:47,001 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a381edf-ab01-41b6-92bc-f9af652b83c9/bin/uautomizer-tPACEb0tL8/mathsat -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 10:56:47,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:56:47,445 INFO L263 TraceCheckSpWp]: Trace formula consists of 308 conjuncts, 41 conjunts are in the unsatisfiable core [2022-11-16 10:56:47,449 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 10:56:47,593 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-11-16 10:56:47,593 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 19 treesize of output 27 [2022-11-16 10:56:47,704 INFO L321 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2022-11-16 10:56:47,705 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 20 [2022-11-16 10:56:47,902 INFO L321 Elim1Store]: treesize reduction 54, result has 29.9 percent of original size [2022-11-16 10:56:47,902 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 26 treesize of output 43 [2022-11-16 10:56:48,109 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-16 10:56:48,274 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 47 [2022-11-16 10:56:48,487 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-16 10:56:48,528 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-16 10:56:48,587 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-16 10:56:48,651 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-16 10:56:48,959 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-11-16 10:56:49,207 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 10:56:49,207 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 10:56:49,208 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 10:56:49,208 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1742820363] [2022-11-16 10:56:49,208 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1742820363] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 10:56:49,208 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 10:56:49,208 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2022-11-16 10:56:49,208 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1245134098] [2022-11-16 10:56:49,208 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 10:56:49,209 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-16 10:56:49,209 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 10:56:49,209 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-16 10:56:49,209 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=300, Unknown=0, NotChecked=0, Total=342 [2022-11-16 10:56:49,209 INFO L87 Difference]: Start difference. First operand 287 states and 338 transitions. Second operand has 19 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 2 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-11-16 10:56:50,143 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 10:56:50,143 INFO L93 Difference]: Finished difference Result 302 states and 359 transitions. [2022-11-16 10:56:50,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-11-16 10:56:50,144 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 2 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 45 [2022-11-16 10:56:50,144 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 10:56:50,145 INFO L225 Difference]: With dead ends: 302 [2022-11-16 10:56:50,145 INFO L226 Difference]: Without dead ends: 302 [2022-11-16 10:56:50,145 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 26 SyntacticMatches, 1 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=69, Invalid=483, Unknown=0, NotChecked=0, Total=552 [2022-11-16 10:56:50,146 INFO L413 NwaCegarLoop]: 126 mSDtfsCounter, 75 mSDsluCounter, 1345 mSDsCounter, 0 mSdLazyCounter, 385 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 76 SdHoareTripleChecker+Valid, 1471 SdHoareTripleChecker+Invalid, 1317 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 385 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 917 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-16 10:56:50,146 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [76 Valid, 1471 Invalid, 1317 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 385 Invalid, 0 Unknown, 917 Unchecked, 0.7s Time] [2022-11-16 10:56:50,147 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 302 states. [2022-11-16 10:56:50,152 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 302 to 291. [2022-11-16 10:56:50,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 291 states, 209 states have (on average 1.5167464114832536) internal successors, (317), 269 states have internal predecessors, (317), 11 states have call successors, (11), 10 states have call predecessors, (11), 12 states have return successors, (15), 11 states have call predecessors, (15), 11 states have call successors, (15) [2022-11-16 10:56:50,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 291 states to 291 states and 343 transitions. [2022-11-16 10:56:50,154 INFO L78 Accepts]: Start accepts. Automaton has 291 states and 343 transitions. Word has length 45 [2022-11-16 10:56:50,154 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 10:56:50,154 INFO L495 AbstractCegarLoop]: Abstraction has 291 states and 343 transitions. [2022-11-16 10:56:50,154 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 2 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-11-16 10:56:50,155 INFO L276 IsEmpty]: Start isEmpty. Operand 291 states and 343 transitions. [2022-11-16 10:56:50,155 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2022-11-16 10:56:50,155 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 10:56:50,155 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 10:56:50,173 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a381edf-ab01-41b6-92bc-f9af652b83c9/bin/uautomizer-tPACEb0tL8/mathsat -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 10:56:50,356 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a381edf-ab01-41b6-92bc-f9af652b83c9/bin/uautomizer-tPACEb0tL8/mathsat -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 10:56:50,356 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr19REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [free_reportsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 73 more)] === [2022-11-16 10:56:50,356 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 10:56:50,356 INFO L85 PathProgramCache]: Analyzing trace with hash -1036278109, now seen corresponding path program 1 times [2022-11-16 10:56:50,357 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 10:56:50,357 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2102024129] [2022-11-16 10:56:50,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 10:56:50,357 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 10:56:50,357 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a381edf-ab01-41b6-92bc-f9af652b83c9/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 10:56:50,359 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a381edf-ab01-41b6-92bc-f9af652b83c9/bin/uautomizer-tPACEb0tL8/mathsat -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 10:56:50,371 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a381edf-ab01-41b6-92bc-f9af652b83c9/bin/uautomizer-tPACEb0tL8/mathsat -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 10:56:50,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:56:50,834 INFO L263 TraceCheckSpWp]: Trace formula consists of 308 conjuncts, 67 conjunts are in the unsatisfiable core [2022-11-16 10:56:50,839 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 10:56:53,012 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 10:56:53,013 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2022-11-16 10:56:53,159 INFO L321 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2022-11-16 10:56:53,159 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 20 [2022-11-16 10:56:53,194 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-16 10:56:53,194 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 18 [2022-11-16 10:56:53,457 INFO L321 Elim1Store]: treesize reduction 22, result has 29.0 percent of original size [2022-11-16 10:56:53,457 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 20 treesize of output 22 [2022-11-16 10:56:53,480 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2022-11-16 10:56:53,723 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-16 10:56:53,749 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-16 10:56:53,992 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 47 [2022-11-16 10:56:54,013 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 12 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 47 [2022-11-16 10:56:54,230 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-16 10:56:54,239 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-16 10:56:54,270 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-16 10:56:54,301 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-16 10:56:54,343 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-16 10:56:54,354 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-16 10:56:54,422 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-16 10:56:54,433 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-16 10:56:54,685 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-11-16 10:56:54,693 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-11-16 10:56:54,855 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 10:56:54,855 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 10:56:54,855 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 10:56:54,855 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2102024129] [2022-11-16 10:56:54,855 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2102024129] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 10:56:54,855 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 10:56:54,856 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-11-16 10:56:54,856 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1488876491] [2022-11-16 10:56:54,856 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 10:56:54,856 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-11-16 10:56:54,856 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 10:56:54,856 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-11-16 10:56:54,857 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=333, Unknown=3, NotChecked=0, Total=380 [2022-11-16 10:56:54,857 INFO L87 Difference]: Start difference. First operand 291 states and 343 transitions. Second operand has 20 states, 18 states have (on average 2.1666666666666665) internal successors, (39), 17 states have internal predecessors, (39), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-16 10:57:00,325 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 10:57:00,325 INFO L93 Difference]: Finished difference Result 426 states and 494 transitions. [2022-11-16 10:57:00,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-11-16 10:57:00,326 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 18 states have (on average 2.1666666666666665) internal successors, (39), 17 states have internal predecessors, (39), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) Word has length 45 [2022-11-16 10:57:00,326 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 10:57:00,327 INFO L225 Difference]: With dead ends: 426 [2022-11-16 10:57:00,328 INFO L226 Difference]: Without dead ends: 426 [2022-11-16 10:57:00,328 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 25 SyntacticMatches, 1 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 81 ImplicationChecksByTransitivity, 5.6s TimeCoverageRelationStatistics Valid=102, Invalid=763, Unknown=5, NotChecked=0, Total=870 [2022-11-16 10:57:00,329 INFO L413 NwaCegarLoop]: 135 mSDtfsCounter, 329 mSDsluCounter, 1341 mSDsCounter, 0 mSdLazyCounter, 1362 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 331 SdHoareTripleChecker+Valid, 1476 SdHoareTripleChecker+Invalid, 2498 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 1362 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1102 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2022-11-16 10:57:00,329 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [331 Valid, 1476 Invalid, 2498 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 1362 Invalid, 0 Unknown, 1102 Unchecked, 2.8s Time] [2022-11-16 10:57:00,330 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 426 states. [2022-11-16 10:57:00,336 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 426 to 344. [2022-11-16 10:57:00,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 344 states, 256 states have (on average 1.55859375) internal successors, (399), 318 states have internal predecessors, (399), 14 states have call successors, (14), 12 states have call predecessors, (14), 15 states have return successors, (20), 13 states have call predecessors, (20), 14 states have call successors, (20) [2022-11-16 10:57:00,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 344 states to 344 states and 433 transitions. [2022-11-16 10:57:00,339 INFO L78 Accepts]: Start accepts. Automaton has 344 states and 433 transitions. Word has length 45 [2022-11-16 10:57:00,339 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 10:57:00,339 INFO L495 AbstractCegarLoop]: Abstraction has 344 states and 433 transitions. [2022-11-16 10:57:00,339 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 18 states have (on average 2.1666666666666665) internal successors, (39), 17 states have internal predecessors, (39), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-16 10:57:00,339 INFO L276 IsEmpty]: Start isEmpty. Operand 344 states and 433 transitions. [2022-11-16 10:57:00,340 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-11-16 10:57:00,340 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 10:57:00,340 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 10:57:00,355 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a381edf-ab01-41b6-92bc-f9af652b83c9/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (26)] Forceful destruction successful, exit code 0 [2022-11-16 10:57:00,555 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a381edf-ab01-41b6-92bc-f9af652b83c9/bin/uautomizer-tPACEb0tL8/mathsat -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 10:57:00,555 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting free_reportsErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [free_reportsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 73 more)] === [2022-11-16 10:57:00,555 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 10:57:00,556 INFO L85 PathProgramCache]: Analyzing trace with hash -1566398444, now seen corresponding path program 1 times [2022-11-16 10:57:00,556 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 10:57:00,556 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1385983573] [2022-11-16 10:57:00,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 10:57:00,556 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 10:57:00,556 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a381edf-ab01-41b6-92bc-f9af652b83c9/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 10:57:00,557 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a381edf-ab01-41b6-92bc-f9af652b83c9/bin/uautomizer-tPACEb0tL8/mathsat -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 10:57:00,558 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a381edf-ab01-41b6-92bc-f9af652b83c9/bin/uautomizer-tPACEb0tL8/mathsat -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 10:57:00,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:57:00,846 INFO L263 TraceCheckSpWp]: Trace formula consists of 241 conjuncts, 70 conjunts are in the unsatisfiable core [2022-11-16 10:57:00,851 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 10:57:01,084 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-11-16 10:57:01,085 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 24 treesize of output 37 [2022-11-16 10:57:01,513 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-16 10:57:01,630 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-11-16 10:57:01,934 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18 [2022-11-16 10:57:01,964 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-16 10:57:02,079 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 10:57:02,081 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 10:57:02,116 INFO L321 Elim1Store]: treesize reduction 48, result has 29.4 percent of original size [2022-11-16 10:57:02,116 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 35 treesize of output 57 [2022-11-16 10:57:02,316 INFO L321 Elim1Store]: treesize reduction 6, result has 57.1 percent of original size [2022-11-16 10:57:02,316 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 22 [2022-11-16 10:57:02,631 INFO L321 Elim1Store]: treesize reduction 22, result has 37.1 percent of original size [2022-11-16 10:57:02,632 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 29 treesize of output 29 [2022-11-16 10:57:02,857 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-16 10:57:02,882 INFO L321 Elim1Store]: treesize reduction 23, result has 17.9 percent of original size [2022-11-16 10:57:02,883 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 46 treesize of output 46 [2022-11-16 10:57:03,021 INFO L321 Elim1Store]: treesize reduction 23, result has 17.9 percent of original size [2022-11-16 10:57:03,022 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 46 treesize of output 46 [2022-11-16 10:57:03,037 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-16 10:57:03,414 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-11-16 10:57:03,695 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-16 10:57:03,695 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 54 treesize of output 25 [2022-11-16 10:57:03,834 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 10:57:03,834 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 10:57:03,835 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 10:57:03,835 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1385983573] [2022-11-16 10:57:03,835 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1385983573] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 10:57:03,835 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 10:57:03,835 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2022-11-16 10:57:03,835 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1902438259] [2022-11-16 10:57:03,835 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 10:57:03,836 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-11-16 10:57:03,836 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 10:57:03,836 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-11-16 10:57:03,836 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=621, Unknown=0, NotChecked=0, Total=702 [2022-11-16 10:57:03,837 INFO L87 Difference]: Start difference. First operand 344 states and 433 transitions. Second operand has 27 states, 23 states have (on average 1.7391304347826086) internal successors, (40), 20 states have internal predecessors, (40), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-16 10:57:08,414 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 10:57:08,414 INFO L93 Difference]: Finished difference Result 375 states and 462 transitions. [2022-11-16 10:57:08,415 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-11-16 10:57:08,415 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 23 states have (on average 1.7391304347826086) internal successors, (40), 20 states have internal predecessors, (40), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 47 [2022-11-16 10:57:08,415 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 10:57:08,416 INFO L225 Difference]: With dead ends: 375 [2022-11-16 10:57:08,417 INFO L226 Difference]: Without dead ends: 375 [2022-11-16 10:57:08,417 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 346 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=195, Invalid=1445, Unknown=0, NotChecked=0, Total=1640 [2022-11-16 10:57:08,418 INFO L413 NwaCegarLoop]: 146 mSDtfsCounter, 176 mSDsluCounter, 1731 mSDsCounter, 0 mSdLazyCounter, 1249 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 176 SdHoareTripleChecker+Valid, 1877 SdHoareTripleChecker+Invalid, 1519 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 1249 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 241 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2022-11-16 10:57:08,418 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [176 Valid, 1877 Invalid, 1519 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 1249 Invalid, 0 Unknown, 241 Unchecked, 2.9s Time] [2022-11-16 10:57:08,419 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 375 states. [2022-11-16 10:57:08,425 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 375 to 348. [2022-11-16 10:57:08,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 348 states, 259 states have (on average 1.555984555984556) internal successors, (403), 321 states have internal predecessors, (403), 15 states have call successors, (15), 12 states have call predecessors, (15), 15 states have return successors, (21), 14 states have call predecessors, (21), 15 states have call successors, (21) [2022-11-16 10:57:08,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 348 states to 348 states and 439 transitions. [2022-11-16 10:57:08,427 INFO L78 Accepts]: Start accepts. Automaton has 348 states and 439 transitions. Word has length 47 [2022-11-16 10:57:08,427 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 10:57:08,427 INFO L495 AbstractCegarLoop]: Abstraction has 348 states and 439 transitions. [2022-11-16 10:57:08,427 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 23 states have (on average 1.7391304347826086) internal successors, (40), 20 states have internal predecessors, (40), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-16 10:57:08,428 INFO L276 IsEmpty]: Start isEmpty. Operand 348 states and 439 transitions. [2022-11-16 10:57:08,428 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-11-16 10:57:08,428 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 10:57:08,428 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 10:57:08,441 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a381edf-ab01-41b6-92bc-f9af652b83c9/bin/uautomizer-tPACEb0tL8/mathsat -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 10:57:08,641 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a381edf-ab01-41b6-92bc-f9af652b83c9/bin/uautomizer-tPACEb0tL8/mathsat -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 10:57:08,641 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting free_reportsErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [free_reportsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 73 more)] === [2022-11-16 10:57:08,641 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 10:57:08,642 INFO L85 PathProgramCache]: Analyzing trace with hash -1566398443, now seen corresponding path program 1 times [2022-11-16 10:57:08,642 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 10:57:08,642 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [991857817] [2022-11-16 10:57:08,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 10:57:08,642 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 10:57:08,642 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a381edf-ab01-41b6-92bc-f9af652b83c9/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 10:57:08,644 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a381edf-ab01-41b6-92bc-f9af652b83c9/bin/uautomizer-tPACEb0tL8/mathsat -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 10:57:08,682 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a381edf-ab01-41b6-92bc-f9af652b83c9/bin/uautomizer-tPACEb0tL8/mathsat -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 10:57:08,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:57:08,969 INFO L263 TraceCheckSpWp]: Trace formula consists of 241 conjuncts, 86 conjunts are in the unsatisfiable core [2022-11-16 10:57:08,974 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 10:57:09,111 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-16 10:57:09,246 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-11-16 10:57:09,246 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 19 treesize of output 27 [2022-11-16 10:57:09,652 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-16 10:57:09,685 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-16 10:57:09,799 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-11-16 10:57:09,817 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-11-16 10:57:10,218 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18 [2022-11-16 10:57:10,234 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2022-11-16 10:57:10,389 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 10:57:10,424 INFO L321 Elim1Store]: treesize reduction 34, result has 37.0 percent of original size [2022-11-16 10:57:10,425 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 30 treesize of output 47 [2022-11-16 10:57:10,434 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2022-11-16 10:57:10,640 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 3 [2022-11-16 10:57:10,654 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2022-11-16 10:57:11,055 INFO L321 Elim1Store]: treesize reduction 12, result has 52.0 percent of original size [2022-11-16 10:57:11,055 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 24 treesize of output 26 [2022-11-16 10:57:11,094 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2022-11-16 10:57:11,389 INFO L321 Elim1Store]: treesize reduction 23, result has 17.9 percent of original size [2022-11-16 10:57:11,390 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 66 treesize of output 62 [2022-11-16 10:57:11,403 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 30 [2022-11-16 10:57:11,597 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 30 [2022-11-16 10:57:11,622 INFO L321 Elim1Store]: treesize reduction 23, result has 17.9 percent of original size [2022-11-16 10:57:11,622 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 66 treesize of output 62 [2022-11-16 10:57:12,569 INFO L321 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2022-11-16 10:57:12,570 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 1 case distinctions, treesize of input 53 treesize of output 31 [2022-11-16 10:57:12,580 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-16 10:57:12,581 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 52 treesize of output 23 [2022-11-16 10:57:12,775 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 10:57:12,776 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 10:57:12,776 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 10:57:12,776 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [991857817] [2022-11-16 10:57:12,776 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [991857817] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 10:57:12,776 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 10:57:12,777 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26 [2022-11-16 10:57:12,777 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [331283481] [2022-11-16 10:57:12,777 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 10:57:12,777 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-11-16 10:57:12,777 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 10:57:12,778 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-11-16 10:57:12,778 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=675, Unknown=0, NotChecked=0, Total=756 [2022-11-16 10:57:12,778 INFO L87 Difference]: Start difference. First operand 348 states and 439 transitions. Second operand has 28 states, 24 states have (on average 1.6666666666666667) internal successors, (40), 20 states have internal predecessors, (40), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-16 10:57:18,483 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 10:57:18,484 INFO L93 Difference]: Finished difference Result 356 states and 429 transitions. [2022-11-16 10:57:18,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-11-16 10:57:18,484 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 24 states have (on average 1.6666666666666667) internal successors, (40), 20 states have internal predecessors, (40), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 47 [2022-11-16 10:57:18,485 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 10:57:18,486 INFO L225 Difference]: With dead ends: 356 [2022-11-16 10:57:18,486 INFO L226 Difference]: Without dead ends: 356 [2022-11-16 10:57:18,487 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 398 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=181, Invalid=1541, Unknown=0, NotChecked=0, Total=1722 [2022-11-16 10:57:18,488 INFO L413 NwaCegarLoop]: 147 mSDtfsCounter, 126 mSDsluCounter, 1603 mSDsCounter, 0 mSdLazyCounter, 1509 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 126 SdHoareTripleChecker+Valid, 1750 SdHoareTripleChecker+Invalid, 1927 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 1509 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 388 IncrementalHoareTripleChecker+Unchecked, 3.8s IncrementalHoareTripleChecker+Time [2022-11-16 10:57:18,488 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [126 Valid, 1750 Invalid, 1927 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 1509 Invalid, 0 Unknown, 388 Unchecked, 3.8s Time] [2022-11-16 10:57:18,489 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 356 states. [2022-11-16 10:57:18,494 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 356 to 336. [2022-11-16 10:57:18,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 336 states, 249 states have (on average 1.5421686746987953) internal successors, (384), 310 states have internal predecessors, (384), 14 states have call successors, (14), 12 states have call predecessors, (14), 14 states have return successors, (19), 13 states have call predecessors, (19), 14 states have call successors, (19) [2022-11-16 10:57:18,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 336 states to 336 states and 417 transitions. [2022-11-16 10:57:18,496 INFO L78 Accepts]: Start accepts. Automaton has 336 states and 417 transitions. Word has length 47 [2022-11-16 10:57:18,496 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 10:57:18,496 INFO L495 AbstractCegarLoop]: Abstraction has 336 states and 417 transitions. [2022-11-16 10:57:18,497 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 24 states have (on average 1.6666666666666667) internal successors, (40), 20 states have internal predecessors, (40), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-16 10:57:18,497 INFO L276 IsEmpty]: Start isEmpty. Operand 336 states and 417 transitions. [2022-11-16 10:57:18,497 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2022-11-16 10:57:18,497 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 10:57:18,498 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 10:57:18,511 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a381edf-ab01-41b6-92bc-f9af652b83c9/bin/uautomizer-tPACEb0tL8/mathsat -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)] Ended with exit code 0 [2022-11-16 10:57:18,710 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a381edf-ab01-41b6-92bc-f9af652b83c9/bin/uautomizer-tPACEb0tL8/mathsat -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 10:57:18,711 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr20REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [free_reportsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 73 more)] === [2022-11-16 10:57:18,711 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 10:57:18,711 INFO L85 PathProgramCache]: Analyzing trace with hash 463879875, now seen corresponding path program 1 times [2022-11-16 10:57:18,711 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 10:57:18,712 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [665117859] [2022-11-16 10:57:18,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 10:57:18,712 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 10:57:18,712 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a381edf-ab01-41b6-92bc-f9af652b83c9/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 10:57:18,714 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a381edf-ab01-41b6-92bc-f9af652b83c9/bin/uautomizer-tPACEb0tL8/mathsat -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 10:57:18,715 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a381edf-ab01-41b6-92bc-f9af652b83c9/bin/uautomizer-tPACEb0tL8/mathsat -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 10:57:19,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:57:19,356 INFO L263 TraceCheckSpWp]: Trace formula consists of 317 conjuncts, 73 conjunts are in the unsatisfiable core [2022-11-16 10:57:19,363 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 10:57:19,422 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 10:57:19,604 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-16 10:57:19,703 INFO L321 Elim1Store]: treesize reduction 58, result has 24.7 percent of original size [2022-11-16 10:57:19,704 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 25 treesize of output 36 [2022-11-16 10:57:19,804 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 10:57:19,807 INFO L321 Elim1Store]: treesize reduction 28, result has 3.4 percent of original size [2022-11-16 10:57:19,808 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 26 treesize of output 16 [2022-11-16 10:57:20,043 INFO L321 Elim1Store]: treesize reduction 116, result has 26.6 percent of original size [2022-11-16 10:57:20,043 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 9 case distinctions, treesize of input 37 treesize of output 67 [2022-11-16 10:57:20,435 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 26 [2022-11-16 10:57:20,454 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-16 10:57:20,739 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 10:57:20,740 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 10:57:20,741 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 10:57:20,742 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 10:57:20,748 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-16 10:57:20,748 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 11 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 55 treesize of output 65 [2022-11-16 10:57:20,801 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 10:57:20,802 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 10:57:20,804 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 10:57:20,805 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 10:57:20,806 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 12 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 47 [2022-11-16 10:57:21,088 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-16 10:57:21,128 INFO L321 Elim1Store]: treesize reduction 19, result has 32.1 percent of original size [2022-11-16 10:57:21,128 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 33 treesize of output 40 [2022-11-16 10:57:21,143 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2022-11-16 10:57:21,262 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-16 10:57:21,319 INFO L321 Elim1Store]: treesize reduction 19, result has 32.1 percent of original size [2022-11-16 10:57:21,319 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 33 treesize of output 40 [2022-11-16 10:57:21,342 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2022-11-16 10:57:21,531 INFO L321 Elim1Store]: treesize reduction 19, result has 32.1 percent of original size [2022-11-16 10:57:21,531 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 33 treesize of output 40 [2022-11-16 10:57:21,549 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2022-11-16 10:57:21,571 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-16 10:57:21,730 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 10:57:21,735 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-16 10:57:21,735 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 36 [2022-11-16 10:57:21,752 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-16 10:57:22,164 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-11-16 10:57:22,615 INFO L321 Elim1Store]: treesize reduction 17, result has 32.0 percent of original size [2022-11-16 10:57:22,615 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 38 treesize of output 28 [2022-11-16 10:57:22,858 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 10:57:22,858 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 10:57:22,858 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 10:57:22,858 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [665117859] [2022-11-16 10:57:22,858 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [665117859] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 10:57:22,859 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 10:57:22,859 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-11-16 10:57:22,859 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [373126777] [2022-11-16 10:57:22,859 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 10:57:22,859 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-11-16 10:57:22,859 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 10:57:22,860 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-11-16 10:57:22,860 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=489, Unknown=0, NotChecked=0, Total=552 [2022-11-16 10:57:22,860 INFO L87 Difference]: Start difference. First operand 336 states and 417 transitions. Second operand has 24 states, 21 states have (on average 2.0) internal successors, (42), 20 states have internal predecessors, (42), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-16 10:57:24,346 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 10:57:24,347 INFO L93 Difference]: Finished difference Result 397 states and 482 transitions. [2022-11-16 10:57:24,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-11-16 10:57:24,347 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 21 states have (on average 2.0) internal successors, (42), 20 states have internal predecessors, (42), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 48 [2022-11-16 10:57:24,347 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 10:57:24,349 INFO L225 Difference]: With dead ends: 397 [2022-11-16 10:57:24,349 INFO L226 Difference]: Without dead ends: 397 [2022-11-16 10:57:24,350 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 22 SyntacticMatches, 4 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 253 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=133, Invalid=1057, Unknown=0, NotChecked=0, Total=1190 [2022-11-16 10:57:24,350 INFO L413 NwaCegarLoop]: 126 mSDtfsCounter, 209 mSDsluCounter, 1617 mSDsCounter, 0 mSdLazyCounter, 534 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 212 SdHoareTripleChecker+Valid, 1743 SdHoareTripleChecker+Invalid, 1905 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 534 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1348 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-11-16 10:57:24,351 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [212 Valid, 1743 Invalid, 1905 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 534 Invalid, 0 Unknown, 1348 Unchecked, 0.9s Time] [2022-11-16 10:57:24,351 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 397 states. [2022-11-16 10:57:24,357 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 397 to 336. [2022-11-16 10:57:24,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 336 states, 249 states have (on average 1.538152610441767) internal successors, (383), 310 states have internal predecessors, (383), 14 states have call successors, (14), 12 states have call predecessors, (14), 14 states have return successors, (19), 13 states have call predecessors, (19), 14 states have call successors, (19) [2022-11-16 10:57:24,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 336 states to 336 states and 416 transitions. [2022-11-16 10:57:24,359 INFO L78 Accepts]: Start accepts. Automaton has 336 states and 416 transitions. Word has length 48 [2022-11-16 10:57:24,359 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 10:57:24,360 INFO L495 AbstractCegarLoop]: Abstraction has 336 states and 416 transitions. [2022-11-16 10:57:24,360 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 21 states have (on average 2.0) internal successors, (42), 20 states have internal predecessors, (42), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-16 10:57:24,360 INFO L276 IsEmpty]: Start isEmpty. Operand 336 states and 416 transitions. [2022-11-16 10:57:24,360 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2022-11-16 10:57:24,360 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 10:57:24,361 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 10:57:24,375 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a381edf-ab01-41b6-92bc-f9af652b83c9/bin/uautomizer-tPACEb0tL8/mathsat -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 10:57:24,575 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a381edf-ab01-41b6-92bc-f9af652b83c9/bin/uautomizer-tPACEb0tL8/mathsat -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 10:57:24,575 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr21REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [free_reportsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 73 more)] === [2022-11-16 10:57:24,576 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 10:57:24,576 INFO L85 PathProgramCache]: Analyzing trace with hash 463879876, now seen corresponding path program 1 times [2022-11-16 10:57:24,576 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 10:57:24,576 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1111137438] [2022-11-16 10:57:24,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 10:57:24,576 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 10:57:24,577 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a381edf-ab01-41b6-92bc-f9af652b83c9/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 10:57:24,577 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a381edf-ab01-41b6-92bc-f9af652b83c9/bin/uautomizer-tPACEb0tL8/mathsat -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 10:57:24,578 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a381edf-ab01-41b6-92bc-f9af652b83c9/bin/uautomizer-tPACEb0tL8/mathsat -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 10:57:25,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:57:25,156 INFO L263 TraceCheckSpWp]: Trace formula consists of 317 conjuncts, 102 conjunts are in the unsatisfiable core [2022-11-16 10:57:25,167 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 10:57:25,238 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 10:57:25,259 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 10:57:25,574 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-16 10:57:25,595 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-16 10:57:25,732 INFO L321 Elim1Store]: treesize reduction 70, result has 30.7 percent of original size [2022-11-16 10:57:25,732 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 30 treesize of output 51 [2022-11-16 10:57:25,771 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2022-11-16 10:57:25,927 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 10:57:25,932 INFO L321 Elim1Store]: treesize reduction 13, result has 7.1 percent of original size [2022-11-16 10:57:25,932 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 16 [2022-11-16 10:57:25,947 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 3 [2022-11-16 10:57:26,197 INFO L321 Elim1Store]: treesize reduction 19, result has 47.2 percent of original size [2022-11-16 10:57:26,198 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 26 [2022-11-16 10:57:26,274 INFO L321 Elim1Store]: treesize reduction 42, result has 28.8 percent of original size [2022-11-16 10:57:26,274 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 31 treesize of output 35 [2022-11-16 10:57:26,678 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18 [2022-11-16 10:57:26,709 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 28 [2022-11-16 10:57:27,353 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 8 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 37 [2022-11-16 10:57:27,383 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 10:57:27,384 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 10:57:27,386 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 10:57:27,387 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 10:57:27,400 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-16 10:57:27,400 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 11 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 61 treesize of output 67 [2022-11-16 10:57:27,433 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 10:57:27,435 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 10:57:27,437 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 10:57:27,439 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 10:57:27,442 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 10:57:27,445 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 13 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 43 treesize of output 57 [2022-11-16 10:57:28,138 INFO L321 Elim1Store]: treesize reduction 19, result has 32.1 percent of original size [2022-11-16 10:57:28,139 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 39 treesize of output 44 [2022-11-16 10:57:28,166 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 14 [2022-11-16 10:57:28,198 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 43 treesize of output 39 [2022-11-16 10:57:28,222 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 10:57:28,247 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-16 10:57:28,247 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 30 [2022-11-16 10:57:28,448 INFO L321 Elim1Store]: treesize reduction 19, result has 32.1 percent of original size [2022-11-16 10:57:28,448 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 21 treesize of output 30 [2022-11-16 10:57:28,497 INFO L321 Elim1Store]: treesize reduction 19, result has 32.1 percent of original size [2022-11-16 10:57:28,497 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 39 treesize of output 44 [2022-11-16 10:57:28,534 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 14 [2022-11-16 10:57:28,555 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 43 treesize of output 39 [2022-11-16 10:57:28,845 INFO L321 Elim1Store]: treesize reduction 19, result has 32.1 percent of original size [2022-11-16 10:57:28,845 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 39 treesize of output 44 [2022-11-16 10:57:28,862 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 14 [2022-11-16 10:57:28,891 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 10:57:28,922 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-16 10:57:28,922 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 30 [2022-11-16 10:57:28,946 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 43 treesize of output 39 [2022-11-16 10:57:29,228 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 43 treesize of output 39 [2022-11-16 10:57:29,243 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 10:57:29,247 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-16 10:57:29,248 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 40 [2022-11-16 10:57:29,268 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 10:57:29,270 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 10:57:29,271 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 5 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 26 [2022-11-16 10:57:29,999 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 7 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 54 treesize of output 22 [2022-11-16 10:57:30,332 INFO L321 Elim1Store]: treesize reduction 17, result has 32.0 percent of original size [2022-11-16 10:57:30,333 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 55 treesize of output 37 [2022-11-16 10:57:30,346 INFO L321 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2022-11-16 10:57:30,347 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 16 [2022-11-16 10:57:30,570 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 10:57:30,570 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 10:57:30,570 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 10:57:30,570 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1111137438] [2022-11-16 10:57:30,570 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1111137438] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 10:57:30,571 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 10:57:30,571 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [27] imperfect sequences [] total 27 [2022-11-16 10:57:30,571 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1265856193] [2022-11-16 10:57:30,571 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 10:57:30,571 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2022-11-16 10:57:30,571 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 10:57:30,572 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2022-11-16 10:57:30,572 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=737, Unknown=0, NotChecked=0, Total=812 [2022-11-16 10:57:30,572 INFO L87 Difference]: Start difference. First operand 336 states and 416 transitions. Second operand has 29 states, 26 states have (on average 1.6153846153846154) internal successors, (42), 24 states have internal predecessors, (42), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-16 10:57:33,993 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 10:57:33,993 INFO L93 Difference]: Finished difference Result 451 states and 538 transitions. [2022-11-16 10:57:33,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-11-16 10:57:33,994 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 26 states have (on average 1.6153846153846154) internal successors, (42), 24 states have internal predecessors, (42), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 48 [2022-11-16 10:57:33,994 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 10:57:33,995 INFO L225 Difference]: With dead ends: 451 [2022-11-16 10:57:33,996 INFO L226 Difference]: Without dead ends: 451 [2022-11-16 10:57:33,997 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 16 SyntacticMatches, 4 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 382 ImplicationChecksByTransitivity, 4.2s TimeCoverageRelationStatistics Valid=157, Invalid=1565, Unknown=0, NotChecked=0, Total=1722 [2022-11-16 10:57:33,998 INFO L413 NwaCegarLoop]: 195 mSDtfsCounter, 160 mSDsluCounter, 2870 mSDsCounter, 0 mSdLazyCounter, 945 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 161 SdHoareTripleChecker+Valid, 3065 SdHoareTripleChecker+Invalid, 2198 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 945 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1238 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2022-11-16 10:57:33,999 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [161 Valid, 3065 Invalid, 2198 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 945 Invalid, 0 Unknown, 1238 Unchecked, 2.0s Time] [2022-11-16 10:57:33,999 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 451 states. [2022-11-16 10:57:34,005 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 451 to 359. [2022-11-16 10:57:34,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 359 states, 272 states have (on average 1.5073529411764706) internal successors, (410), 333 states have internal predecessors, (410), 14 states have call successors, (14), 12 states have call predecessors, (14), 14 states have return successors, (19), 13 states have call predecessors, (19), 14 states have call successors, (19) [2022-11-16 10:57:34,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 359 states to 359 states and 443 transitions. [2022-11-16 10:57:34,007 INFO L78 Accepts]: Start accepts. Automaton has 359 states and 443 transitions. Word has length 48 [2022-11-16 10:57:34,008 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 10:57:34,008 INFO L495 AbstractCegarLoop]: Abstraction has 359 states and 443 transitions. [2022-11-16 10:57:34,008 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 26 states have (on average 1.6153846153846154) internal successors, (42), 24 states have internal predecessors, (42), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-16 10:57:34,008 INFO L276 IsEmpty]: Start isEmpty. Operand 359 states and 443 transitions. [2022-11-16 10:57:34,009 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2022-11-16 10:57:34,009 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 10:57:34,009 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 10:57:34,028 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a381edf-ab01-41b6-92bc-f9af652b83c9/bin/uautomizer-tPACEb0tL8/mathsat -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)] Forceful destruction successful, exit code 0 [2022-11-16 10:57:34,223 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a381edf-ab01-41b6-92bc-f9af652b83c9/bin/uautomizer-tPACEb0tL8/mathsat -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 10:57:34,223 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr21REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [free_reportsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 73 more)] === [2022-11-16 10:57:34,223 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 10:57:34,224 INFO L85 PathProgramCache]: Analyzing trace with hash 245025158, now seen corresponding path program 1 times [2022-11-16 10:57:34,224 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 10:57:34,224 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [248196136] [2022-11-16 10:57:34,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 10:57:34,224 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 10:57:34,224 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a381edf-ab01-41b6-92bc-f9af652b83c9/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 10:57:34,226 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a381edf-ab01-41b6-92bc-f9af652b83c9/bin/uautomizer-tPACEb0tL8/mathsat -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 10:57:34,239 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a381edf-ab01-41b6-92bc-f9af652b83c9/bin/uautomizer-tPACEb0tL8/mathsat -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 10:57:34,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:57:34,835 INFO L263 TraceCheckSpWp]: Trace formula consists of 317 conjuncts, 85 conjunts are in the unsatisfiable core [2022-11-16 10:57:34,840 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 10:57:34,916 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 10:57:34,924 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 10:57:35,289 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-16 10:57:35,303 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-16 10:57:35,451 INFO L321 Elim1Store]: treesize reduction 70, result has 30.7 percent of original size [2022-11-16 10:57:35,452 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 30 treesize of output 51 [2022-11-16 10:57:35,493 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2022-11-16 10:57:35,628 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 10:57:35,632 INFO L321 Elim1Store]: treesize reduction 13, result has 7.1 percent of original size [2022-11-16 10:57:35,632 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 16 [2022-11-16 10:57:35,652 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 3 [2022-11-16 10:57:35,919 INFO L321 Elim1Store]: treesize reduction 19, result has 47.2 percent of original size [2022-11-16 10:57:35,920 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 26 [2022-11-16 10:57:35,984 INFO L321 Elim1Store]: treesize reduction 42, result has 28.8 percent of original size [2022-11-16 10:57:35,984 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 31 treesize of output 35 [2022-11-16 10:57:36,406 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 28 [2022-11-16 10:57:36,430 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18 [2022-11-16 10:57:36,796 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 10:57:36,798 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 10:57:36,799 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 10:57:36,801 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 10:57:36,809 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-16 10:57:36,809 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 11 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 61 treesize of output 67 [2022-11-16 10:57:36,850 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 10:57:36,852 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 10:57:36,854 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 10:57:36,855 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 10:57:36,857 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 10:57:36,858 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 13 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 43 treesize of output 57 [2022-11-16 10:57:37,213 INFO L321 Elim1Store]: treesize reduction 19, result has 32.1 percent of original size [2022-11-16 10:57:37,214 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 39 treesize of output 44 [2022-11-16 10:57:37,240 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 14 [2022-11-16 10:57:37,278 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 10:57:37,306 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-16 10:57:37,306 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 30 [2022-11-16 10:57:37,466 INFO L321 Elim1Store]: treesize reduction 19, result has 32.1 percent of original size [2022-11-16 10:57:37,466 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 39 treesize of output 44 [2022-11-16 10:57:37,479 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 14 [2022-11-16 10:57:37,510 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 10:57:37,539 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-16 10:57:37,539 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 30 [2022-11-16 10:57:37,767 INFO L321 Elim1Store]: treesize reduction 19, result has 32.1 percent of original size [2022-11-16 10:57:37,768 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 39 treesize of output 44 [2022-11-16 10:57:37,796 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 14 [2022-11-16 10:57:37,817 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 10:57:37,847 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-16 10:57:37,848 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 30 [2022-11-16 10:57:38,065 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 10:57:38,070 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-16 10:57:38,070 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 40 [2022-11-16 10:57:38,088 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 10:57:38,095 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-16 10:57:38,095 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 26 [2022-11-16 10:57:38,820 INFO L321 Elim1Store]: treesize reduction 17, result has 32.0 percent of original size [2022-11-16 10:57:38,820 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 55 treesize of output 37 [2022-11-16 10:57:38,834 INFO L321 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2022-11-16 10:57:38,834 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 16 [2022-11-16 10:57:39,155 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 10:57:39,155 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 10:57:39,156 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 10:57:39,156 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [248196136] [2022-11-16 10:57:39,156 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [248196136] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 10:57:39,156 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 10:57:39,156 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [24] imperfect sequences [] total 24 [2022-11-16 10:57:39,156 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [835220709] [2022-11-16 10:57:39,156 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 10:57:39,156 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-11-16 10:57:39,156 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 10:57:39,157 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-11-16 10:57:39,157 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=584, Unknown=0, NotChecked=0, Total=650 [2022-11-16 10:57:39,157 INFO L87 Difference]: Start difference. First operand 359 states and 443 transitions. Second operand has 26 states, 23 states have (on average 1.826086956521739) internal successors, (42), 21 states have internal predecessors, (42), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-16 10:57:42,766 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 10:57:42,766 INFO L93 Difference]: Finished difference Result 522 states and 607 transitions. [2022-11-16 10:57:42,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-11-16 10:57:42,767 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 23 states have (on average 1.826086956521739) internal successors, (42), 21 states have internal predecessors, (42), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 48 [2022-11-16 10:57:42,767 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 10:57:42,769 INFO L225 Difference]: With dead ends: 522 [2022-11-16 10:57:42,769 INFO L226 Difference]: Without dead ends: 522 [2022-11-16 10:57:42,770 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 19 SyntacticMatches, 4 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 285 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=142, Invalid=1340, Unknown=0, NotChecked=0, Total=1482 [2022-11-16 10:57:42,770 INFO L413 NwaCegarLoop]: 240 mSDtfsCounter, 260 mSDsluCounter, 3236 mSDsCounter, 0 mSdLazyCounter, 991 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 262 SdHoareTripleChecker+Valid, 3476 SdHoareTripleChecker+Invalid, 2364 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 991 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1359 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2022-11-16 10:57:42,771 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [262 Valid, 3476 Invalid, 2364 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 991 Invalid, 0 Unknown, 1359 Unchecked, 2.5s Time] [2022-11-16 10:57:42,772 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 522 states. [2022-11-16 10:57:42,792 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 522 to 356. [2022-11-16 10:57:42,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 356 states, 269 states have (on average 1.4981412639405205) internal successors, (403), 330 states have internal predecessors, (403), 14 states have call successors, (14), 12 states have call predecessors, (14), 14 states have return successors, (19), 13 states have call predecessors, (19), 14 states have call successors, (19) [2022-11-16 10:57:42,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 356 states to 356 states and 436 transitions. [2022-11-16 10:57:42,803 INFO L78 Accepts]: Start accepts. Automaton has 356 states and 436 transitions. Word has length 48 [2022-11-16 10:57:42,803 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 10:57:42,803 INFO L495 AbstractCegarLoop]: Abstraction has 356 states and 436 transitions. [2022-11-16 10:57:42,804 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 23 states have (on average 1.826086956521739) internal successors, (42), 21 states have internal predecessors, (42), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-16 10:57:42,804 INFO L276 IsEmpty]: Start isEmpty. Operand 356 states and 436 transitions. [2022-11-16 10:57:42,805 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2022-11-16 10:57:42,805 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 10:57:42,805 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 10:57:42,823 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a381edf-ab01-41b6-92bc-f9af652b83c9/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (31)] Forceful destruction successful, exit code 0 [2022-11-16 10:57:43,020 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a381edf-ab01-41b6-92bc-f9af652b83c9/bin/uautomizer-tPACEb0tL8/mathsat -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 10:57:43,020 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr39REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [free_reportsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 73 more)] === [2022-11-16 10:57:43,021 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 10:57:43,021 INFO L85 PathProgramCache]: Analyzing trace with hash -2098722122, now seen corresponding path program 1 times [2022-11-16 10:57:43,021 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 10:57:43,021 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1280841542] [2022-11-16 10:57:43,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 10:57:43,022 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 10:57:43,022 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a381edf-ab01-41b6-92bc-f9af652b83c9/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 10:57:43,022 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a381edf-ab01-41b6-92bc-f9af652b83c9/bin/uautomizer-tPACEb0tL8/mathsat -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 10:57:43,024 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a381edf-ab01-41b6-92bc-f9af652b83c9/bin/uautomizer-tPACEb0tL8/mathsat -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 10:57:43,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:57:43,313 INFO L263 TraceCheckSpWp]: Trace formula consists of 303 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-16 10:57:43,314 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 10:57:43,329 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 10:57:43,330 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 10:57:43,330 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 10:57:43,330 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1280841542] [2022-11-16 10:57:43,330 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1280841542] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 10:57:43,330 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 10:57:43,330 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-16 10:57:43,330 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [193805824] [2022-11-16 10:57:43,330 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 10:57:43,331 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 10:57:43,331 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 10:57:43,331 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 10:57:43,331 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 10:57:43,331 INFO L87 Difference]: Start difference. First operand 356 states and 436 transitions. Second operand has 4 states, 4 states have (on average 10.75) internal successors, (43), 4 states have internal predecessors, (43), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-16 10:57:43,365 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 10:57:43,365 INFO L93 Difference]: Finished difference Result 375 states and 452 transitions. [2022-11-16 10:57:43,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 10:57:43,366 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.75) internal successors, (43), 4 states have internal predecessors, (43), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 49 [2022-11-16 10:57:43,366 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 10:57:43,367 INFO L225 Difference]: With dead ends: 375 [2022-11-16 10:57:43,367 INFO L226 Difference]: Without dead ends: 375 [2022-11-16 10:57:43,367 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 46 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 10:57:43,368 INFO L413 NwaCegarLoop]: 211 mSDtfsCounter, 76 mSDsluCounter, 337 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 80 SdHoareTripleChecker+Valid, 548 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-16 10:57:43,368 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [80 Valid, 548 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-16 10:57:43,369 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 375 states. [2022-11-16 10:57:43,375 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 375 to 354. [2022-11-16 10:57:43,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 354 states, 267 states have (on average 1.4868913857677903) internal successors, (397), 328 states have internal predecessors, (397), 14 states have call successors, (14), 12 states have call predecessors, (14), 14 states have return successors, (19), 13 states have call predecessors, (19), 14 states have call successors, (19) [2022-11-16 10:57:43,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 354 states to 354 states and 430 transitions. [2022-11-16 10:57:43,377 INFO L78 Accepts]: Start accepts. Automaton has 354 states and 430 transitions. Word has length 49 [2022-11-16 10:57:43,377 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 10:57:43,377 INFO L495 AbstractCegarLoop]: Abstraction has 354 states and 430 transitions. [2022-11-16 10:57:43,378 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.75) internal successors, (43), 4 states have internal predecessors, (43), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-16 10:57:43,378 INFO L276 IsEmpty]: Start isEmpty. Operand 354 states and 430 transitions. [2022-11-16 10:57:43,378 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2022-11-16 10:57:43,378 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 10:57:43,379 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 10:57:43,393 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a381edf-ab01-41b6-92bc-f9af652b83c9/bin/uautomizer-tPACEb0tL8/mathsat -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)] Forceful destruction successful, exit code 0 [2022-11-16 10:57:43,593 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a381edf-ab01-41b6-92bc-f9af652b83c9/bin/uautomizer-tPACEb0tL8/mathsat -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 10:57:43,593 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr22REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [free_reportsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 73 more)] === [2022-11-16 10:57:43,593 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 10:57:43,593 INFO L85 PathProgramCache]: Analyzing trace with hash -888034332, now seen corresponding path program 1 times [2022-11-16 10:57:43,594 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 10:57:43,594 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [138348285] [2022-11-16 10:57:43,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 10:57:43,594 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 10:57:43,594 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a381edf-ab01-41b6-92bc-f9af652b83c9/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 10:57:43,595 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a381edf-ab01-41b6-92bc-f9af652b83c9/bin/uautomizer-tPACEb0tL8/mathsat -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 10:57:43,596 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a381edf-ab01-41b6-92bc-f9af652b83c9/bin/uautomizer-tPACEb0tL8/mathsat -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 10:57:43,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:57:43,869 INFO L263 TraceCheckSpWp]: Trace formula consists of 324 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-16 10:57:43,870 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 10:57:43,882 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 10:57:43,882 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 10:57:43,883 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 10:57:43,883 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [138348285] [2022-11-16 10:57:43,883 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [138348285] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 10:57:43,883 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 10:57:43,883 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-16 10:57:43,883 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1991684739] [2022-11-16 10:57:43,884 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 10:57:43,884 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 10:57:43,884 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 10:57:43,885 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 10:57:43,886 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 10:57:43,886 INFO L87 Difference]: Start difference. First operand 354 states and 430 transitions. Second operand has 3 states, 2 states have (on average 22.0) internal successors, (44), 3 states have internal predecessors, (44), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-16 10:57:44,249 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 10:57:44,249 INFO L93 Difference]: Finished difference Result 418 states and 508 transitions. [2022-11-16 10:57:44,250 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 10:57:44,250 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 22.0) internal successors, (44), 3 states have internal predecessors, (44), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 50 [2022-11-16 10:57:44,250 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 10:57:44,251 INFO L225 Difference]: With dead ends: 418 [2022-11-16 10:57:44,251 INFO L226 Difference]: Without dead ends: 418 [2022-11-16 10:57:44,251 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 48 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 10:57:44,252 INFO L413 NwaCegarLoop]: 212 mSDtfsCounter, 44 mSDsluCounter, 109 mSDsCounter, 0 mSdLazyCounter, 87 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 321 SdHoareTripleChecker+Invalid, 88 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 87 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-16 10:57:44,252 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [45 Valid, 321 Invalid, 88 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 87 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-16 10:57:44,253 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 418 states. [2022-11-16 10:57:44,258 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 418 to 353. [2022-11-16 10:57:44,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 353 states, 267 states have (on average 1.4756554307116105) internal successors, (394), 327 states have internal predecessors, (394), 14 states have call successors, (14), 12 states have call predecessors, (14), 14 states have return successors, (19), 13 states have call predecessors, (19), 14 states have call successors, (19) [2022-11-16 10:57:44,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 353 states to 353 states and 427 transitions. [2022-11-16 10:57:44,260 INFO L78 Accepts]: Start accepts. Automaton has 353 states and 427 transitions. Word has length 50 [2022-11-16 10:57:44,261 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 10:57:44,261 INFO L495 AbstractCegarLoop]: Abstraction has 353 states and 427 transitions. [2022-11-16 10:57:44,261 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 22.0) internal successors, (44), 3 states have internal predecessors, (44), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-16 10:57:44,261 INFO L276 IsEmpty]: Start isEmpty. Operand 353 states and 427 transitions. [2022-11-16 10:57:44,261 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2022-11-16 10:57:44,262 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 10:57:44,262 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 10:57:44,276 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a381edf-ab01-41b6-92bc-f9af652b83c9/bin/uautomizer-tPACEb0tL8/mathsat -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 10:57:44,476 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a381edf-ab01-41b6-92bc-f9af652b83c9/bin/uautomizer-tPACEb0tL8/mathsat -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 10:57:44,476 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ldv_list_delErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [free_reportsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 73 more)] === [2022-11-16 10:57:44,476 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 10:57:44,476 INFO L85 PathProgramCache]: Analyzing trace with hash -2119273512, now seen corresponding path program 1 times [2022-11-16 10:57:44,477 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 10:57:44,477 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2144787550] [2022-11-16 10:57:44,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 10:57:44,477 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 10:57:44,477 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a381edf-ab01-41b6-92bc-f9af652b83c9/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 10:57:44,478 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a381edf-ab01-41b6-92bc-f9af652b83c9/bin/uautomizer-tPACEb0tL8/mathsat -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 10:57:44,479 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a381edf-ab01-41b6-92bc-f9af652b83c9/bin/uautomizer-tPACEb0tL8/mathsat -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 10:57:44,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:57:44,711 INFO L263 TraceCheckSpWp]: Trace formula consists of 262 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-16 10:57:44,713 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 10:57:44,747 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 10:57:44,747 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 10:57:44,747 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 10:57:44,747 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2144787550] [2022-11-16 10:57:44,747 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2144787550] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 10:57:44,747 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 10:57:44,747 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-16 10:57:44,748 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [766711491] [2022-11-16 10:57:44,748 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 10:57:44,748 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-16 10:57:44,748 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 10:57:44,748 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-16 10:57:44,748 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-16 10:57:44,749 INFO L87 Difference]: Start difference. First operand 353 states and 427 transitions. Second operand has 5 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-16 10:57:45,345 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 10:57:45,345 INFO L93 Difference]: Finished difference Result 386 states and 465 transitions. [2022-11-16 10:57:45,346 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-16 10:57:45,346 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 52 [2022-11-16 10:57:45,346 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 10:57:45,347 INFO L225 Difference]: With dead ends: 386 [2022-11-16 10:57:45,347 INFO L226 Difference]: Without dead ends: 386 [2022-11-16 10:57:45,347 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-11-16 10:57:45,348 INFO L413 NwaCegarLoop]: 175 mSDtfsCounter, 44 mSDsluCounter, 333 mSDsCounter, 0 mSdLazyCounter, 237 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 508 SdHoareTripleChecker+Invalid, 241 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 237 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-16 10:57:45,348 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [45 Valid, 508 Invalid, 241 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 237 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-16 10:57:45,348 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 386 states. [2022-11-16 10:57:45,353 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 386 to 378. [2022-11-16 10:57:45,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 378 states, 289 states have (on average 1.480968858131488) internal successors, (428), 348 states have internal predecessors, (428), 16 states have call successors, (16), 14 states have call predecessors, (16), 16 states have return successors, (21), 15 states have call predecessors, (21), 16 states have call successors, (21) [2022-11-16 10:57:45,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 378 states to 378 states and 465 transitions. [2022-11-16 10:57:45,356 INFO L78 Accepts]: Start accepts. Automaton has 378 states and 465 transitions. Word has length 52 [2022-11-16 10:57:45,356 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 10:57:45,356 INFO L495 AbstractCegarLoop]: Abstraction has 378 states and 465 transitions. [2022-11-16 10:57:45,356 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-16 10:57:45,356 INFO L276 IsEmpty]: Start isEmpty. Operand 378 states and 465 transitions. [2022-11-16 10:57:45,357 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2022-11-16 10:57:45,357 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 10:57:45,357 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 10:57:45,371 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a381edf-ab01-41b6-92bc-f9af652b83c9/bin/uautomizer-tPACEb0tL8/mathsat -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 10:57:45,569 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a381edf-ab01-41b6-92bc-f9af652b83c9/bin/uautomizer-tPACEb0tL8/mathsat -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 10:57:45,570 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ldv_list_delErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [free_reportsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 73 more)] === [2022-11-16 10:57:45,570 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 10:57:45,570 INFO L85 PathProgramCache]: Analyzing trace with hash -2119273511, now seen corresponding path program 1 times [2022-11-16 10:57:45,570 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 10:57:45,571 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [768352154] [2022-11-16 10:57:45,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 10:57:45,571 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 10:57:45,571 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a381edf-ab01-41b6-92bc-f9af652b83c9/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 10:57:45,572 INFO L229 MonitoredProcess]: Starting monitored process 35 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a381edf-ab01-41b6-92bc-f9af652b83c9/bin/uautomizer-tPACEb0tL8/mathsat -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 10:57:45,610 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a381edf-ab01-41b6-92bc-f9af652b83c9/bin/uautomizer-tPACEb0tL8/mathsat -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 10:57:46,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:57:46,021 INFO L263 TraceCheckSpWp]: Trace formula consists of 262 conjuncts, 81 conjunts are in the unsatisfiable core [2022-11-16 10:57:46,025 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 10:57:46,266 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-11-16 10:57:46,267 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 19 treesize of output 27 [2022-11-16 10:57:46,659 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-16 10:57:46,669 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-16 10:57:46,759 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-11-16 10:57:46,792 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-11-16 10:57:47,125 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18 [2022-11-16 10:57:47,136 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2022-11-16 10:57:47,307 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 10:57:47,340 INFO L321 Elim1Store]: treesize reduction 34, result has 37.0 percent of original size [2022-11-16 10:57:47,341 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 30 treesize of output 47 [2022-11-16 10:57:47,533 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2022-11-16 10:57:47,897 INFO L321 Elim1Store]: treesize reduction 12, result has 52.0 percent of original size [2022-11-16 10:57:47,898 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 24 treesize of output 26 [2022-11-16 10:57:48,239 INFO L321 Elim1Store]: treesize reduction 23, result has 17.9 percent of original size [2022-11-16 10:57:48,239 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 57 treesize of output 55 [2022-11-16 10:57:48,260 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 30 [2022-11-16 10:57:48,515 INFO L321 Elim1Store]: treesize reduction 23, result has 17.9 percent of original size [2022-11-16 10:57:48,515 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 57 treesize of output 55 [2022-11-16 10:57:48,529 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 30 [2022-11-16 10:57:49,397 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 10:57:49,398 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 10:57:49,407 INFO L321 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2022-11-16 10:57:49,408 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 59 treesize of output 31 [2022-11-16 10:57:49,437 INFO L321 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2022-11-16 10:57:49,438 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 31 treesize of output 16 [2022-11-16 10:57:49,682 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 10:57:49,682 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 10:57:49,682 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 10:57:49,682 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [768352154] [2022-11-16 10:57:49,682 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [768352154] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 10:57:49,682 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 10:57:49,682 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [27] imperfect sequences [] total 27 [2022-11-16 10:57:49,683 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2137358611] [2022-11-16 10:57:49,683 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 10:57:49,683 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-11-16 10:57:49,683 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 10:57:49,683 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-11-16 10:57:49,684 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=672, Unknown=0, NotChecked=0, Total=756 [2022-11-16 10:57:49,684 INFO L87 Difference]: Start difference. First operand 378 states and 465 transitions. Second operand has 28 states, 25 states have (on average 1.76) internal successors, (44), 21 states have internal predecessors, (44), 5 states have call successors, (5), 5 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-16 10:57:53,767 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 10:57:53,767 INFO L93 Difference]: Finished difference Result 380 states and 459 transitions. [2022-11-16 10:57:53,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-11-16 10:57:53,767 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 25 states have (on average 1.76) internal successors, (44), 21 states have internal predecessors, (44), 5 states have call successors, (5), 5 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 52 [2022-11-16 10:57:53,768 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 10:57:53,769 INFO L225 Difference]: With dead ends: 380 [2022-11-16 10:57:53,770 INFO L226 Difference]: Without dead ends: 380 [2022-11-16 10:57:53,770 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 318 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=160, Invalid=1322, Unknown=0, NotChecked=0, Total=1482 [2022-11-16 10:57:53,771 INFO L413 NwaCegarLoop]: 160 mSDtfsCounter, 85 mSDsluCounter, 2104 mSDsCounter, 0 mSdLazyCounter, 970 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 85 SdHoareTripleChecker+Valid, 2264 SdHoareTripleChecker+Invalid, 1087 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 970 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 101 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2022-11-16 10:57:53,771 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [85 Valid, 2264 Invalid, 1087 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 970 Invalid, 0 Unknown, 101 Unchecked, 2.6s Time] [2022-11-16 10:57:53,771 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 380 states. [2022-11-16 10:57:53,776 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 380 to 367. [2022-11-16 10:57:53,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 367 states, 280 states have (on average 1.4714285714285715) internal successors, (412), 339 states have internal predecessors, (412), 15 states have call successors, (15), 13 states have call predecessors, (15), 15 states have return successors, (20), 14 states have call predecessors, (20), 15 states have call successors, (20) [2022-11-16 10:57:53,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 367 states to 367 states and 447 transitions. [2022-11-16 10:57:53,778 INFO L78 Accepts]: Start accepts. Automaton has 367 states and 447 transitions. Word has length 52 [2022-11-16 10:57:53,778 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 10:57:53,779 INFO L495 AbstractCegarLoop]: Abstraction has 367 states and 447 transitions. [2022-11-16 10:57:53,779 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 25 states have (on average 1.76) internal successors, (44), 21 states have internal predecessors, (44), 5 states have call successors, (5), 5 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-16 10:57:53,779 INFO L276 IsEmpty]: Start isEmpty. Operand 367 states and 447 transitions. [2022-11-16 10:57:53,779 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2022-11-16 10:57:53,780 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 10:57:53,780 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 10:57:53,799 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a381edf-ab01-41b6-92bc-f9af652b83c9/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (35)] Forceful destruction successful, exit code 0 [2022-11-16 10:57:53,993 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a381edf-ab01-41b6-92bc-f9af652b83c9/bin/uautomizer-tPACEb0tL8/mathsat -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 10:57:53,994 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr31REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [free_reportsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 73 more)] === [2022-11-16 10:57:53,994 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 10:57:53,994 INFO L85 PathProgramCache]: Analyzing trace with hash -1900704622, now seen corresponding path program 1 times [2022-11-16 10:57:53,994 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 10:57:53,994 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1468439798] [2022-11-16 10:57:53,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 10:57:53,995 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 10:57:53,995 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a381edf-ab01-41b6-92bc-f9af652b83c9/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 10:57:53,996 INFO L229 MonitoredProcess]: Starting monitored process 36 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a381edf-ab01-41b6-92bc-f9af652b83c9/bin/uautomizer-tPACEb0tL8/mathsat -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 10:57:54,015 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a381edf-ab01-41b6-92bc-f9af652b83c9/bin/uautomizer-tPACEb0tL8/mathsat -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 10:57:54,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:57:54,352 INFO L263 TraceCheckSpWp]: Trace formula consists of 324 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-16 10:57:54,354 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 10:57:54,397 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 10:57:54,398 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 10:57:54,398 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 10:57:54,398 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1468439798] [2022-11-16 10:57:54,398 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1468439798] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 10:57:54,398 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 10:57:54,398 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 10:57:54,398 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1113422747] [2022-11-16 10:57:54,398 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 10:57:54,399 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-16 10:57:54,399 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 10:57:54,399 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-16 10:57:54,399 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-16 10:57:54,399 INFO L87 Difference]: Start difference. First operand 367 states and 447 transitions. Second operand has 5 states, 5 states have (on average 9.0) internal successors, (45), 5 states have internal predecessors, (45), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-16 10:57:54,477 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 10:57:54,477 INFO L93 Difference]: Finished difference Result 447 states and 531 transitions. [2022-11-16 10:57:54,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 10:57:54,478 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 5 states have internal predecessors, (45), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 51 [2022-11-16 10:57:54,478 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 10:57:54,479 INFO L225 Difference]: With dead ends: 447 [2022-11-16 10:57:54,479 INFO L226 Difference]: Without dead ends: 447 [2022-11-16 10:57:54,480 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 48 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 10:57:54,480 INFO L413 NwaCegarLoop]: 224 mSDtfsCounter, 93 mSDsluCounter, 596 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 93 SdHoareTripleChecker+Valid, 820 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-16 10:57:54,480 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [93 Valid, 820 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-16 10:57:54,481 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 447 states. [2022-11-16 10:57:54,488 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 447 to 373. [2022-11-16 10:57:54,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 373 states, 286 states have (on average 1.4615384615384615) internal successors, (418), 345 states have internal predecessors, (418), 15 states have call successors, (15), 13 states have call predecessors, (15), 15 states have return successors, (20), 14 states have call predecessors, (20), 15 states have call successors, (20) [2022-11-16 10:57:54,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 373 states to 373 states and 453 transitions. [2022-11-16 10:57:54,492 INFO L78 Accepts]: Start accepts. Automaton has 373 states and 453 transitions. Word has length 51 [2022-11-16 10:57:54,493 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 10:57:54,493 INFO L495 AbstractCegarLoop]: Abstraction has 373 states and 453 transitions. [2022-11-16 10:57:54,493 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 5 states have internal predecessors, (45), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-16 10:57:54,493 INFO L276 IsEmpty]: Start isEmpty. Operand 373 states and 453 transitions. [2022-11-16 10:57:54,494 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2022-11-16 10:57:54,494 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 10:57:54,494 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 10:57:54,512 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a381edf-ab01-41b6-92bc-f9af652b83c9/bin/uautomizer-tPACEb0tL8/mathsat -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 10:57:54,707 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a381edf-ab01-41b6-92bc-f9af652b83c9/bin/uautomizer-tPACEb0tL8/mathsat -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 10:57:54,708 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr43ASSERT_VIOLATIONMEMORY_FREE === [free_reportsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 73 more)] === [2022-11-16 10:57:54,708 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 10:57:54,708 INFO L85 PathProgramCache]: Analyzing trace with hash -1078714490, now seen corresponding path program 1 times [2022-11-16 10:57:54,708 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 10:57:54,709 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [995500293] [2022-11-16 10:57:54,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 10:57:54,709 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 10:57:54,709 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a381edf-ab01-41b6-92bc-f9af652b83c9/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 10:57:54,710 INFO L229 MonitoredProcess]: Starting monitored process 37 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a381edf-ab01-41b6-92bc-f9af652b83c9/bin/uautomizer-tPACEb0tL8/mathsat -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 10:57:54,715 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a381edf-ab01-41b6-92bc-f9af652b83c9/bin/uautomizer-tPACEb0tL8/mathsat -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 10:57:54,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:57:55,007 INFO L263 TraceCheckSpWp]: Trace formula consists of 262 conjuncts, 38 conjunts are in the unsatisfiable core [2022-11-16 10:57:55,010 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 10:57:55,226 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-16 10:57:55,568 INFO L321 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2022-11-16 10:57:55,568 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 18 [2022-11-16 10:57:55,691 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-16 10:57:55,691 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 10 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 35 treesize of output 49 [2022-11-16 10:57:55,927 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-11-16 10:57:55,955 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 10:57:55,955 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 10:57:55,955 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 10:57:55,955 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [995500293] [2022-11-16 10:57:55,955 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [995500293] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 10:57:55,956 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 10:57:55,956 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-11-16 10:57:55,956 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [560315717] [2022-11-16 10:57:55,956 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 10:57:55,956 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-16 10:57:55,956 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 10:57:55,957 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-16 10:57:55,957 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=250, Unknown=0, NotChecked=0, Total=306 [2022-11-16 10:57:55,957 INFO L87 Difference]: Start difference. First operand 373 states and 453 transitions. Second operand has 18 states, 15 states have (on average 3.066666666666667) internal successors, (46), 15 states have internal predecessors, (46), 4 states have call successors, (4), 3 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-11-16 10:57:57,986 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 10:57:57,986 INFO L93 Difference]: Finished difference Result 384 states and 462 transitions. [2022-11-16 10:57:57,987 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-11-16 10:57:57,987 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 15 states have (on average 3.066666666666667) internal successors, (46), 15 states have internal predecessors, (46), 4 states have call successors, (4), 3 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Word has length 54 [2022-11-16 10:57:57,987 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 10:57:57,988 INFO L225 Difference]: With dead ends: 384 [2022-11-16 10:57:57,989 INFO L226 Difference]: Without dead ends: 384 [2022-11-16 10:57:57,989 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 36 SyntacticMatches, 1 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 186 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=203, Invalid=853, Unknown=0, NotChecked=0, Total=1056 [2022-11-16 10:57:57,989 INFO L413 NwaCegarLoop]: 149 mSDtfsCounter, 513 mSDsluCounter, 980 mSDsCounter, 0 mSdLazyCounter, 540 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 519 SdHoareTripleChecker+Valid, 1129 SdHoareTripleChecker+Invalid, 592 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 540 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-11-16 10:57:57,990 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [519 Valid, 1129 Invalid, 592 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [52 Valid, 540 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-11-16 10:57:57,990 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 384 states. [2022-11-16 10:57:57,995 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 384 to 375. [2022-11-16 10:57:57,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 375 states, 289 states have (on average 1.4498269896193772) internal successors, (419), 346 states have internal predecessors, (419), 15 states have call successors, (15), 13 states have call predecessors, (15), 15 states have return successors, (20), 15 states have call predecessors, (20), 15 states have call successors, (20) [2022-11-16 10:57:57,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 375 states to 375 states and 454 transitions. [2022-11-16 10:57:57,998 INFO L78 Accepts]: Start accepts. Automaton has 375 states and 454 transitions. Word has length 54 [2022-11-16 10:57:57,998 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 10:57:57,998 INFO L495 AbstractCegarLoop]: Abstraction has 375 states and 454 transitions. [2022-11-16 10:57:57,999 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 15 states have (on average 3.066666666666667) internal successors, (46), 15 states have internal predecessors, (46), 4 states have call successors, (4), 3 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-11-16 10:57:57,999 INFO L276 IsEmpty]: Start isEmpty. Operand 375 states and 454 transitions. [2022-11-16 10:57:57,999 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2022-11-16 10:57:57,999 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 10:57:58,000 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 10:57:58,012 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a381edf-ab01-41b6-92bc-f9af652b83c9/bin/uautomizer-tPACEb0tL8/mathsat -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)] Ended with exit code 0 [2022-11-16 10:57:58,212 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 37 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a381edf-ab01-41b6-92bc-f9af652b83c9/bin/uautomizer-tPACEb0tL8/mathsat -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 10:57:58,212 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr44ASSERT_VIOLATIONMEMORY_FREE === [free_reportsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 73 more)] === [2022-11-16 10:57:58,213 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 10:57:58,213 INFO L85 PathProgramCache]: Analyzing trace with hash 919589466, now seen corresponding path program 1 times [2022-11-16 10:57:58,213 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 10:57:58,213 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [175423881] [2022-11-16 10:57:58,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 10:57:58,214 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 10:57:58,214 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a381edf-ab01-41b6-92bc-f9af652b83c9/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 10:57:58,214 INFO L229 MonitoredProcess]: Starting monitored process 38 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a381edf-ab01-41b6-92bc-f9af652b83c9/bin/uautomizer-tPACEb0tL8/mathsat -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 10:57:58,216 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a381edf-ab01-41b6-92bc-f9af652b83c9/bin/uautomizer-tPACEb0tL8/mathsat -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 10:57:58,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:57:58,538 INFO L263 TraceCheckSpWp]: Trace formula consists of 263 conjuncts, 34 conjunts are in the unsatisfiable core [2022-11-16 10:57:58,543 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 10:57:58,791 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-16 10:57:58,858 INFO L321 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2022-11-16 10:57:58,858 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 20 [2022-11-16 10:57:58,899 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 5 [2022-11-16 10:57:59,068 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-16 10:57:59,068 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2022-11-16 10:57:59,199 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-16 10:57:59,244 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-16 10:57:59,422 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-11-16 10:57:59,523 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-11-16 10:57:59,564 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 10:57:59,564 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 10:57:59,565 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 10:57:59,565 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [175423881] [2022-11-16 10:57:59,565 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [175423881] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 10:57:59,565 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 10:57:59,565 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-11-16 10:57:59,565 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [411883682] [2022-11-16 10:57:59,565 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 10:57:59,566 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-16 10:57:59,566 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 10:57:59,566 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-16 10:57:59,566 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=243, Unknown=0, NotChecked=0, Total=306 [2022-11-16 10:57:59,567 INFO L87 Difference]: Start difference. First operand 375 states and 454 transitions. Second operand has 18 states, 16 states have (on average 2.9375) internal successors, (47), 14 states have internal predecessors, (47), 4 states have call successors, (4), 4 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-11-16 10:58:02,451 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 10:58:02,452 INFO L93 Difference]: Finished difference Result 382 states and 459 transitions. [2022-11-16 10:58:02,452 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-11-16 10:58:02,452 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 16 states have (on average 2.9375) internal successors, (47), 14 states have internal predecessors, (47), 4 states have call successors, (4), 4 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Word has length 55 [2022-11-16 10:58:02,453 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 10:58:02,455 INFO L225 Difference]: With dead ends: 382 [2022-11-16 10:58:02,455 INFO L226 Difference]: Without dead ends: 382 [2022-11-16 10:58:02,455 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 37 SyntacticMatches, 1 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 167 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=212, Invalid=844, Unknown=0, NotChecked=0, Total=1056 [2022-11-16 10:58:02,455 INFO L413 NwaCegarLoop]: 139 mSDtfsCounter, 513 mSDsluCounter, 973 mSDsCounter, 0 mSdLazyCounter, 685 mSolverCounterSat, 58 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 519 SdHoareTripleChecker+Valid, 1112 SdHoareTripleChecker+Invalid, 743 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 58 IncrementalHoareTripleChecker+Valid, 685 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2022-11-16 10:58:02,456 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [519 Valid, 1112 Invalid, 743 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [58 Valid, 685 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2022-11-16 10:58:02,456 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 382 states. [2022-11-16 10:58:02,461 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 382 to 375. [2022-11-16 10:58:02,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 375 states, 290 states have (on average 1.4413793103448276) internal successors, (418), 346 states have internal predecessors, (418), 15 states have call successors, (15), 13 states have call predecessors, (15), 15 states have return successors, (20), 15 states have call predecessors, (20), 15 states have call successors, (20) [2022-11-16 10:58:02,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 375 states to 375 states and 453 transitions. [2022-11-16 10:58:02,464 INFO L78 Accepts]: Start accepts. Automaton has 375 states and 453 transitions. Word has length 55 [2022-11-16 10:58:02,464 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 10:58:02,464 INFO L495 AbstractCegarLoop]: Abstraction has 375 states and 453 transitions. [2022-11-16 10:58:02,464 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 16 states have (on average 2.9375) internal successors, (47), 14 states have internal predecessors, (47), 4 states have call successors, (4), 4 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-11-16 10:58:02,464 INFO L276 IsEmpty]: Start isEmpty. Operand 375 states and 453 transitions. [2022-11-16 10:58:02,465 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2022-11-16 10:58:02,465 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 10:58:02,465 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 10:58:02,478 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a381edf-ab01-41b6-92bc-f9af652b83c9/bin/uautomizer-tPACEb0tL8/mathsat -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)] Ended with exit code 0 [2022-11-16 10:58:02,678 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a381edf-ab01-41b6-92bc-f9af652b83c9/bin/uautomizer-tPACEb0tL8/mathsat -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 10:58:02,678 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr31REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [free_reportsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 73 more)] === [2022-11-16 10:58:02,678 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 10:58:02,679 INFO L85 PathProgramCache]: Analyzing trace with hash -776401890, now seen corresponding path program 1 times [2022-11-16 10:58:02,679 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 10:58:02,679 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2089345925] [2022-11-16 10:58:02,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 10:58:02,679 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 10:58:02,679 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a381edf-ab01-41b6-92bc-f9af652b83c9/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 10:58:02,680 INFO L229 MonitoredProcess]: Starting monitored process 39 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a381edf-ab01-41b6-92bc-f9af652b83c9/bin/uautomizer-tPACEb0tL8/mathsat -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 10:58:02,681 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a381edf-ab01-41b6-92bc-f9af652b83c9/bin/uautomizer-tPACEb0tL8/mathsat -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 10:58:03,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:58:03,060 INFO L263 TraceCheckSpWp]: Trace formula consists of 337 conjuncts, 22 conjunts are in the unsatisfiable core [2022-11-16 10:58:03,062 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 10:58:03,194 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-11-16 10:58:03,194 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 19 treesize of output 27 [2022-11-16 10:58:03,274 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 10:58:03,274 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 20 [2022-11-16 10:58:03,419 INFO L321 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2022-11-16 10:58:03,419 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 20 [2022-11-16 10:58:03,660 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 10:58:03,660 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 10:58:03,660 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 10:58:03,661 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2089345925] [2022-11-16 10:58:03,661 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2089345925] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 10:58:03,661 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 10:58:03,661 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-16 10:58:03,661 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1599407843] [2022-11-16 10:58:03,661 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 10:58:03,661 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-16 10:58:03,662 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 10:58:03,662 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-16 10:58:03,662 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2022-11-16 10:58:03,662 INFO L87 Difference]: Start difference. First operand 375 states and 453 transitions. Second operand has 12 states, 11 states have (on average 4.454545454545454) internal successors, (49), 9 states have internal predecessors, (49), 2 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-11-16 10:58:07,413 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 10:58:07,413 INFO L93 Difference]: Finished difference Result 414 states and 486 transitions. [2022-11-16 10:58:07,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-16 10:58:07,414 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 4.454545454545454) internal successors, (49), 9 states have internal predecessors, (49), 2 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 55 [2022-11-16 10:58:07,414 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 10:58:07,416 INFO L225 Difference]: With dead ends: 414 [2022-11-16 10:58:07,416 INFO L226 Difference]: Without dead ends: 414 [2022-11-16 10:58:07,416 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 43 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=69, Invalid=310, Unknown=1, NotChecked=0, Total=380 [2022-11-16 10:58:07,417 INFO L413 NwaCegarLoop]: 110 mSDtfsCounter, 368 mSDsluCounter, 601 mSDsCounter, 0 mSdLazyCounter, 758 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 369 SdHoareTripleChecker+Valid, 711 SdHoareTripleChecker+Invalid, 912 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 758 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 111 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-11-16 10:58:07,417 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [369 Valid, 711 Invalid, 912 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 758 Invalid, 0 Unknown, 111 Unchecked, 1.5s Time] [2022-11-16 10:58:07,418 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 414 states. [2022-11-16 10:58:07,423 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 414 to 374. [2022-11-16 10:58:07,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 374 states, 290 states have (on average 1.4310344827586208) internal successors, (415), 345 states have internal predecessors, (415), 15 states have call successors, (15), 13 states have call predecessors, (15), 15 states have return successors, (20), 15 states have call predecessors, (20), 15 states have call successors, (20) [2022-11-16 10:58:07,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 374 states to 374 states and 450 transitions. [2022-11-16 10:58:07,425 INFO L78 Accepts]: Start accepts. Automaton has 374 states and 450 transitions. Word has length 55 [2022-11-16 10:58:07,425 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 10:58:07,426 INFO L495 AbstractCegarLoop]: Abstraction has 374 states and 450 transitions. [2022-11-16 10:58:07,426 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 4.454545454545454) internal successors, (49), 9 states have internal predecessors, (49), 2 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-11-16 10:58:07,426 INFO L276 IsEmpty]: Start isEmpty. Operand 374 states and 450 transitions. [2022-11-16 10:58:07,426 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2022-11-16 10:58:07,427 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 10:58:07,427 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 10:58:07,442 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a381edf-ab01-41b6-92bc-f9af652b83c9/bin/uautomizer-tPACEb0tL8/mathsat -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 10:58:07,641 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 39 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a381edf-ab01-41b6-92bc-f9af652b83c9/bin/uautomizer-tPACEb0tL8/mathsat -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 10:58:07,641 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr32REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [free_reportsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 73 more)] === [2022-11-16 10:58:07,642 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 10:58:07,642 INFO L85 PathProgramCache]: Analyzing trace with hash -776401889, now seen corresponding path program 1 times [2022-11-16 10:58:07,642 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 10:58:07,642 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1808701138] [2022-11-16 10:58:07,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 10:58:07,642 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 10:58:07,643 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a381edf-ab01-41b6-92bc-f9af652b83c9/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 10:58:07,645 INFO L229 MonitoredProcess]: Starting monitored process 40 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a381edf-ab01-41b6-92bc-f9af652b83c9/bin/uautomizer-tPACEb0tL8/mathsat -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 10:58:07,683 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a381edf-ab01-41b6-92bc-f9af652b83c9/bin/uautomizer-tPACEb0tL8/mathsat -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 10:58:08,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:58:08,063 INFO L263 TraceCheckSpWp]: Trace formula consists of 337 conjuncts, 32 conjunts are in the unsatisfiable core [2022-11-16 10:58:08,065 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 10:58:10,250 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 10:58:10,250 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2022-11-16 10:58:10,407 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 10:58:10,407 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2022-11-16 10:58:10,595 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-11-16 10:58:10,595 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 14 [2022-11-16 10:58:10,951 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 10:58:10,952 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 10:58:10,952 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 10:58:10,952 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1808701138] [2022-11-16 10:58:10,952 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1808701138] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 10:58:10,952 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 10:58:10,952 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-11-16 10:58:10,952 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1676064997] [2022-11-16 10:58:10,952 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 10:58:10,953 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-16 10:58:10,953 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 10:58:10,953 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-16 10:58:10,954 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=124, Unknown=3, NotChecked=0, Total=156 [2022-11-16 10:58:10,954 INFO L87 Difference]: Start difference. First operand 374 states and 450 transitions. Second operand has 13 states, 11 states have (on average 4.454545454545454) internal successors, (49), 10 states have internal predecessors, (49), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-16 10:58:17,394 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 10:58:17,394 INFO L93 Difference]: Finished difference Result 388 states and 462 transitions. [2022-11-16 10:58:17,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-16 10:58:17,395 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 11 states have (on average 4.454545454545454) internal successors, (49), 10 states have internal predecessors, (49), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) Word has length 55 [2022-11-16 10:58:17,395 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 10:58:17,396 INFO L225 Difference]: With dead ends: 388 [2022-11-16 10:58:17,396 INFO L226 Difference]: Without dead ends: 388 [2022-11-16 10:58:17,396 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 42 SyntacticMatches, 1 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 6.7s TimeCoverageRelationStatistics Valid=81, Invalid=374, Unknown=7, NotChecked=0, Total=462 [2022-11-16 10:58:17,397 INFO L413 NwaCegarLoop]: 77 mSDtfsCounter, 322 mSDsluCounter, 445 mSDsCounter, 0 mSdLazyCounter, 909 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 322 SdHoareTripleChecker+Valid, 522 SdHoareTripleChecker+Invalid, 1147 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 909 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 194 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2022-11-16 10:58:17,397 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [322 Valid, 522 Invalid, 1147 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 909 Invalid, 0 Unknown, 194 Unchecked, 2.1s Time] [2022-11-16 10:58:17,398 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 388 states. [2022-11-16 10:58:17,403 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 388 to 373. [2022-11-16 10:58:17,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 373 states, 290 states have (on average 1.4206896551724137) internal successors, (412), 344 states have internal predecessors, (412), 15 states have call successors, (15), 13 states have call predecessors, (15), 15 states have return successors, (20), 15 states have call predecessors, (20), 15 states have call successors, (20) [2022-11-16 10:58:17,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 373 states to 373 states and 447 transitions. [2022-11-16 10:58:17,405 INFO L78 Accepts]: Start accepts. Automaton has 373 states and 447 transitions. Word has length 55 [2022-11-16 10:58:17,405 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 10:58:17,405 INFO L495 AbstractCegarLoop]: Abstraction has 373 states and 447 transitions. [2022-11-16 10:58:17,405 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 11 states have (on average 4.454545454545454) internal successors, (49), 10 states have internal predecessors, (49), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-16 10:58:17,406 INFO L276 IsEmpty]: Start isEmpty. Operand 373 states and 447 transitions. [2022-11-16 10:58:17,406 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2022-11-16 10:58:17,406 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 10:58:17,406 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 10:58:17,427 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a381edf-ab01-41b6-92bc-f9af652b83c9/bin/uautomizer-tPACEb0tL8/mathsat -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)] Forceful destruction successful, exit code 0 [2022-11-16 10:58:17,621 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 40 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a381edf-ab01-41b6-92bc-f9af652b83c9/bin/uautomizer-tPACEb0tL8/mathsat -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 10:58:17,621 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr45ASSERT_VIOLATIONMEMORY_FREE === [free_reportsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 73 more)] === [2022-11-16 10:58:17,622 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 10:58:17,622 INFO L85 PathProgramCache]: Analyzing trace with hash -1557497336, now seen corresponding path program 1 times [2022-11-16 10:58:17,622 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 10:58:17,622 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [65054697] [2022-11-16 10:58:17,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 10:58:17,622 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 10:58:17,622 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a381edf-ab01-41b6-92bc-f9af652b83c9/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 10:58:17,623 INFO L229 MonitoredProcess]: Starting monitored process 41 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a381edf-ab01-41b6-92bc-f9af652b83c9/bin/uautomizer-tPACEb0tL8/mathsat -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 10:58:17,624 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a381edf-ab01-41b6-92bc-f9af652b83c9/bin/uautomizer-tPACEb0tL8/mathsat -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 10:58:17,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:58:17,877 INFO L263 TraceCheckSpWp]: Trace formula consists of 265 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-16 10:58:17,879 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 10:58:18,026 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2022-11-16 10:58:18,048 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 10:58:18,048 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 10:58:18,049 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 10:58:18,049 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [65054697] [2022-11-16 10:58:18,049 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [65054697] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 10:58:18,049 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 10:58:18,049 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-16 10:58:18,049 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [474084581] [2022-11-16 10:58:18,049 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 10:58:18,049 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-16 10:58:18,050 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 10:58:18,050 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-16 10:58:18,050 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-11-16 10:58:18,050 INFO L87 Difference]: Start difference. First operand 373 states and 447 transitions. Second operand has 8 states, 6 states have (on average 8.0) internal successors, (48), 7 states have internal predecessors, (48), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-11-16 10:58:18,924 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 10:58:18,924 INFO L93 Difference]: Finished difference Result 378 states and 452 transitions. [2022-11-16 10:58:18,925 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-16 10:58:18,925 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 6 states have (on average 8.0) internal successors, (48), 7 states have internal predecessors, (48), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 56 [2022-11-16 10:58:18,925 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 10:58:18,927 INFO L225 Difference]: With dead ends: 378 [2022-11-16 10:58:18,927 INFO L226 Difference]: Without dead ends: 378 [2022-11-16 10:58:18,927 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2022-11-16 10:58:18,928 INFO L413 NwaCegarLoop]: 162 mSDtfsCounter, 52 mSDsluCounter, 477 mSDsCounter, 0 mSdLazyCounter, 311 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 639 SdHoareTripleChecker+Invalid, 320 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 311 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-11-16 10:58:18,928 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [52 Valid, 639 Invalid, 320 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 311 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-11-16 10:58:18,929 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 378 states. [2022-11-16 10:58:18,934 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 378 to 376. [2022-11-16 10:58:18,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 376 states, 293 states have (on average 1.42320819112628) internal successors, (417), 347 states have internal predecessors, (417), 15 states have call successors, (15), 13 states have call predecessors, (15), 15 states have return successors, (20), 15 states have call predecessors, (20), 15 states have call successors, (20) [2022-11-16 10:58:18,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 376 states to 376 states and 452 transitions. [2022-11-16 10:58:18,936 INFO L78 Accepts]: Start accepts. Automaton has 376 states and 452 transitions. Word has length 56 [2022-11-16 10:58:18,936 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 10:58:18,936 INFO L495 AbstractCegarLoop]: Abstraction has 376 states and 452 transitions. [2022-11-16 10:58:18,937 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 6 states have (on average 8.0) internal successors, (48), 7 states have internal predecessors, (48), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-11-16 10:58:18,937 INFO L276 IsEmpty]: Start isEmpty. Operand 376 states and 452 transitions. [2022-11-16 10:58:18,937 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2022-11-16 10:58:18,937 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 10:58:18,938 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 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 10:58:18,948 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a381edf-ab01-41b6-92bc-f9af652b83c9/bin/uautomizer-tPACEb0tL8/mathsat -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)] Ended with exit code 0 [2022-11-16 10:58:19,143 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 41 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a381edf-ab01-41b6-92bc-f9af652b83c9/bin/uautomizer-tPACEb0tL8/mathsat -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 10:58:19,143 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr24REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [free_reportsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 73 more)] === [2022-11-16 10:58:19,143 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 10:58:19,143 INFO L85 PathProgramCache]: Analyzing trace with hash 477520901, now seen corresponding path program 1 times [2022-11-16 10:58:19,144 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 10:58:19,144 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1437924689] [2022-11-16 10:58:19,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 10:58:19,144 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 10:58:19,144 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a381edf-ab01-41b6-92bc-f9af652b83c9/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 10:58:19,145 INFO L229 MonitoredProcess]: Starting monitored process 42 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a381edf-ab01-41b6-92bc-f9af652b83c9/bin/uautomizer-tPACEb0tL8/mathsat -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 10:58:19,152 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a381edf-ab01-41b6-92bc-f9af652b83c9/bin/uautomizer-tPACEb0tL8/mathsat -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 10:58:19,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:58:19,555 INFO L263 TraceCheckSpWp]: Trace formula consists of 356 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-16 10:58:19,556 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 10:58:19,559 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 10:58:19,592 WARN L855 $PredicateComparison]: unable to prove that (exists ((|ldv_zalloc_#t~malloc13#1.base| (_ BitVec 32))) (and (exists ((v_ArrVal_2558 (_ BitVec 1))) (= |c_#valid| (store |c_old(#valid)| |ldv_zalloc_#t~malloc13#1.base| v_ArrVal_2558))) (= (select |c_old(#valid)| |ldv_zalloc_#t~malloc13#1.base|) (_ bv0 1)))) is different from true [2022-11-16 10:58:19,639 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-11-16 10:58:19,639 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 19 treesize of output 27 [2022-11-16 10:58:19,649 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 10:58:19,649 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 10:58:19,649 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 10:58:19,649 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1437924689] [2022-11-16 10:58:19,649 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1437924689] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 10:58:19,649 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 10:58:19,649 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-16 10:58:19,649 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1196684970] [2022-11-16 10:58:19,650 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 10:58:19,650 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-16 10:58:19,650 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 10:58:19,650 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-16 10:58:19,651 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=8, Unknown=1, NotChecked=4, Total=20 [2022-11-16 10:58:19,651 INFO L87 Difference]: Start difference. First operand 376 states and 452 transitions. Second operand has 5 states, 4 states have (on average 12.25) internal successors, (49), 4 states have internal predecessors, (49), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-11-16 10:58:20,246 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 10:58:20,246 INFO L93 Difference]: Finished difference Result 441 states and 520 transitions. [2022-11-16 10:58:20,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 10:58:20,247 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 12.25) internal successors, (49), 4 states have internal predecessors, (49), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 57 [2022-11-16 10:58:20,247 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 10:58:20,248 INFO L225 Difference]: With dead ends: 441 [2022-11-16 10:58:20,249 INFO L226 Difference]: Without dead ends: 441 [2022-11-16 10:58:20,249 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 53 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 10:58:20,249 INFO L413 NwaCegarLoop]: 145 mSDtfsCounter, 101 mSDsluCounter, 173 mSDsCounter, 0 mSdLazyCounter, 204 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 103 SdHoareTripleChecker+Valid, 318 SdHoareTripleChecker+Invalid, 424 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 204 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 211 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-16 10:58:20,249 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [103 Valid, 318 Invalid, 424 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 204 Invalid, 0 Unknown, 211 Unchecked, 0.6s Time] [2022-11-16 10:58:20,250 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 441 states. [2022-11-16 10:58:20,255 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 441 to 375. [2022-11-16 10:58:20,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 375 states, 293 states have (on average 1.4197952218430034) internal successors, (416), 346 states have internal predecessors, (416), 15 states have call successors, (15), 13 states have call predecessors, (15), 15 states have return successors, (20), 15 states have call predecessors, (20), 15 states have call successors, (20) [2022-11-16 10:58:20,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 375 states to 375 states and 451 transitions. [2022-11-16 10:58:20,257 INFO L78 Accepts]: Start accepts. Automaton has 375 states and 451 transitions. Word has length 57 [2022-11-16 10:58:20,257 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 10:58:20,257 INFO L495 AbstractCegarLoop]: Abstraction has 375 states and 451 transitions. [2022-11-16 10:58:20,258 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 12.25) internal successors, (49), 4 states have internal predecessors, (49), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-11-16 10:58:20,258 INFO L276 IsEmpty]: Start isEmpty. Operand 375 states and 451 transitions. [2022-11-16 10:58:20,258 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2022-11-16 10:58:20,258 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 10:58:20,259 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 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 10:58:20,280 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a381edf-ab01-41b6-92bc-f9af652b83c9/bin/uautomizer-tPACEb0tL8/mathsat -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 10:58:20,459 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 42 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a381edf-ab01-41b6-92bc-f9af652b83c9/bin/uautomizer-tPACEb0tL8/mathsat -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 10:58:20,459 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr25REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [free_reportsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 73 more)] === [2022-11-16 10:58:20,459 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 10:58:20,460 INFO L85 PathProgramCache]: Analyzing trace with hash 477520902, now seen corresponding path program 1 times [2022-11-16 10:58:20,460 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 10:58:20,460 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1129410169] [2022-11-16 10:58:20,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 10:58:20,460 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 10:58:20,460 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a381edf-ab01-41b6-92bc-f9af652b83c9/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 10:58:20,462 INFO L229 MonitoredProcess]: Starting monitored process 43 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a381edf-ab01-41b6-92bc-f9af652b83c9/bin/uautomizer-tPACEb0tL8/mathsat -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 10:58:20,475 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a381edf-ab01-41b6-92bc-f9af652b83c9/bin/uautomizer-tPACEb0tL8/mathsat -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 10:58:20,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:58:20,927 INFO L263 TraceCheckSpWp]: Trace formula consists of 356 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-16 10:58:20,929 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 10:58:21,066 WARN L855 $PredicateComparison]: unable to prove that (exists ((|ldv_zalloc_#t~malloc13#1.base| (_ BitVec 32))) (and (exists ((v_ArrVal_2668 (_ BitVec 32))) (= (store |c_old(#length)| |ldv_zalloc_#t~malloc13#1.base| v_ArrVal_2668) |c_#length|)) (= (select |c_old(#valid)| |ldv_zalloc_#t~malloc13#1.base|) (_ bv0 1)))) is different from true [2022-11-16 10:58:21,106 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 10:58:21,107 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 19 [2022-11-16 10:58:21,138 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-16 10:58:21,138 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2022-11-16 10:58:21,206 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 10:58:21,206 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 10:58:21,206 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 10:58:21,206 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1129410169] [2022-11-16 10:58:21,206 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1129410169] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 10:58:21,207 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 10:58:21,207 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 10:58:21,207 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [414175405] [2022-11-16 10:58:21,207 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 10:58:21,207 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 10:58:21,207 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 10:58:21,208 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 10:58:21,208 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=13, Unknown=1, NotChecked=6, Total=30 [2022-11-16 10:58:21,208 INFO L87 Difference]: Start difference. First operand 375 states and 451 transitions. Second operand has 6 states, 5 states have (on average 9.8) internal successors, (49), 5 states have internal predecessors, (49), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-11-16 10:58:23,168 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 10:58:23,168 INFO L93 Difference]: Finished difference Result 494 states and 576 transitions. [2022-11-16 10:58:23,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-16 10:58:23,169 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 9.8) internal successors, (49), 5 states have internal predecessors, (49), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 57 [2022-11-16 10:58:23,169 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 10:58:23,171 INFO L225 Difference]: With dead ends: 494 [2022-11-16 10:58:23,171 INFO L226 Difference]: Without dead ends: 494 [2022-11-16 10:58:23,171 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=10, Invalid=13, Unknown=1, NotChecked=6, Total=30 [2022-11-16 10:58:23,171 INFO L413 NwaCegarLoop]: 146 mSDtfsCounter, 164 mSDsluCounter, 233 mSDsCounter, 0 mSdLazyCounter, 392 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 168 SdHoareTripleChecker+Valid, 379 SdHoareTripleChecker+Invalid, 674 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 392 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 269 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2022-11-16 10:58:23,171 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [168 Valid, 379 Invalid, 674 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 392 Invalid, 0 Unknown, 269 Unchecked, 1.9s Time] [2022-11-16 10:58:23,172 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 494 states. [2022-11-16 10:58:23,177 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 494 to 373. [2022-11-16 10:58:23,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 373 states, 293 states have (on average 1.4095563139931742) internal successors, (413), 344 states have internal predecessors, (413), 15 states have call successors, (15), 13 states have call predecessors, (15), 15 states have return successors, (20), 15 states have call predecessors, (20), 15 states have call successors, (20) [2022-11-16 10:58:23,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 373 states to 373 states and 448 transitions. [2022-11-16 10:58:23,179 INFO L78 Accepts]: Start accepts. Automaton has 373 states and 448 transitions. Word has length 57 [2022-11-16 10:58:23,179 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 10:58:23,179 INFO L495 AbstractCegarLoop]: Abstraction has 373 states and 448 transitions. [2022-11-16 10:58:23,179 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 9.8) internal successors, (49), 5 states have internal predecessors, (49), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-11-16 10:58:23,180 INFO L276 IsEmpty]: Start isEmpty. Operand 373 states and 448 transitions. [2022-11-16 10:58:23,180 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2022-11-16 10:58:23,180 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 10:58:23,181 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, 1, 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 10:58:23,191 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a381edf-ab01-41b6-92bc-f9af652b83c9/bin/uautomizer-tPACEb0tL8/mathsat -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)] Ended with exit code 0 [2022-11-16 10:58:23,383 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 43 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a381edf-ab01-41b6-92bc-f9af652b83c9/bin/uautomizer-tPACEb0tL8/mathsat -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 10:58:23,383 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr29ASSERT_VIOLATIONMEMORY_FREE === [free_reportsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 73 more)] === [2022-11-16 10:58:23,383 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 10:58:23,383 INFO L85 PathProgramCache]: Analyzing trace with hash 179092401, now seen corresponding path program 1 times [2022-11-16 10:58:23,384 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 10:58:23,384 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [458254677] [2022-11-16 10:58:23,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 10:58:23,384 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 10:58:23,384 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a381edf-ab01-41b6-92bc-f9af652b83c9/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 10:58:23,385 INFO L229 MonitoredProcess]: Starting monitored process 44 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a381edf-ab01-41b6-92bc-f9af652b83c9/bin/uautomizer-tPACEb0tL8/mathsat -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 10:58:23,387 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a381edf-ab01-41b6-92bc-f9af652b83c9/bin/uautomizer-tPACEb0tL8/mathsat -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 10:58:23,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:58:23,705 INFO L263 TraceCheckSpWp]: Trace formula consists of 333 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-16 10:58:23,706 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 10:58:24,448 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 10:58:24,448 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 10:58:24,448 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 10:58:24,448 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [458254677] [2022-11-16 10:58:24,449 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [458254677] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 10:58:24,449 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 10:58:24,449 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-16 10:58:24,449 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [854202656] [2022-11-16 10:58:24,449 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 10:58:24,449 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-16 10:58:24,450 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 10:58:24,450 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-16 10:58:24,450 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-16 10:58:24,450 INFO L87 Difference]: Start difference. First operand 373 states and 448 transitions. Second operand has 8 states, 7 states have (on average 6.857142857142857) internal successors, (48), 6 states have internal predecessors, (48), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-11-16 10:58:24,477 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 10:58:24,477 INFO L93 Difference]: Finished difference Result 435 states and 526 transitions. [2022-11-16 10:58:24,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-16 10:58:24,478 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 6.857142857142857) internal successors, (48), 6 states have internal predecessors, (48), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 56 [2022-11-16 10:58:24,478 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 10:58:24,479 INFO L225 Difference]: With dead ends: 435 [2022-11-16 10:58:24,480 INFO L226 Difference]: Without dead ends: 435 [2022-11-16 10:58:24,480 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-16 10:58:24,480 INFO L413 NwaCegarLoop]: 210 mSDtfsCounter, 131 mSDsluCounter, 511 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 136 SdHoareTripleChecker+Valid, 721 SdHoareTripleChecker+Invalid, 111 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 101 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-16 10:58:24,480 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [136 Valid, 721 Invalid, 111 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 7 Invalid, 0 Unknown, 101 Unchecked, 0.0s Time] [2022-11-16 10:58:24,481 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 435 states. [2022-11-16 10:58:24,485 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 435 to 372. [2022-11-16 10:58:24,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 372 states, 293 states have (on average 1.4027303754266212) internal successors, (411), 343 states have internal predecessors, (411), 15 states have call successors, (15), 13 states have call predecessors, (15), 15 states have return successors, (20), 15 states have call predecessors, (20), 15 states have call successors, (20) [2022-11-16 10:58:24,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 372 states to 372 states and 446 transitions. [2022-11-16 10:58:24,487 INFO L78 Accepts]: Start accepts. Automaton has 372 states and 446 transitions. Word has length 56 [2022-11-16 10:58:24,487 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 10:58:24,487 INFO L495 AbstractCegarLoop]: Abstraction has 372 states and 446 transitions. [2022-11-16 10:58:24,487 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 6.857142857142857) internal successors, (48), 6 states have internal predecessors, (48), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-11-16 10:58:24,488 INFO L276 IsEmpty]: Start isEmpty. Operand 372 states and 446 transitions. [2022-11-16 10:58:24,488 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2022-11-16 10:58:24,488 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 10:58:24,488 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 10:58:24,531 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a381edf-ab01-41b6-92bc-f9af652b83c9/bin/uautomizer-tPACEb0tL8/mathsat -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)] Forceful destruction successful, exit code 0 [2022-11-16 10:58:24,689 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 44 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a381edf-ab01-41b6-92bc-f9af652b83c9/bin/uautomizer-tPACEb0tL8/mathsat -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 10:58:24,689 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting free_reportsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [free_reportsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 73 more)] === [2022-11-16 10:58:24,689 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 10:58:24,689 INFO L85 PathProgramCache]: Analyzing trace with hash -1389571934, now seen corresponding path program 1 times [2022-11-16 10:58:24,690 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 10:58:24,690 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [67106102] [2022-11-16 10:58:24,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 10:58:24,690 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 10:58:24,690 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a381edf-ab01-41b6-92bc-f9af652b83c9/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 10:58:24,691 INFO L229 MonitoredProcess]: Starting monitored process 45 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a381edf-ab01-41b6-92bc-f9af652b83c9/bin/uautomizer-tPACEb0tL8/mathsat -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 10:58:24,692 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a381edf-ab01-41b6-92bc-f9af652b83c9/bin/uautomizer-tPACEb0tL8/mathsat -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 10:58:25,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:58:25,191 INFO L263 TraceCheckSpWp]: Trace formula consists of 355 conjuncts, 58 conjunts are in the unsatisfiable core [2022-11-16 10:58:25,195 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 10:58:25,252 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 10:58:25,466 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-16 10:58:25,571 INFO L321 Elim1Store]: treesize reduction 34, result has 37.0 percent of original size [2022-11-16 10:58:25,572 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 23 treesize of output 35 [2022-11-16 10:58:25,666 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2022-11-16 10:58:25,962 INFO L321 Elim1Store]: treesize reduction 56, result has 35.6 percent of original size [2022-11-16 10:58:25,963 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 30 treesize of output 51 [2022-11-16 10:58:26,363 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-16 10:58:26,363 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 34 treesize of output 36 [2022-11-16 10:58:26,383 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 16 [2022-11-16 10:58:26,816 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-16 10:58:26,816 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 55 treesize of output 57 [2022-11-16 10:58:26,899 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 16 [2022-11-16 10:58:27,525 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-16 10:58:27,526 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 55 treesize of output 57 [2022-11-16 10:58:27,608 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 16 [2022-11-16 10:58:27,824 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-16 10:58:27,825 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 55 treesize of output 57 [2022-11-16 10:58:27,899 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 16 [2022-11-16 10:58:28,171 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-16 10:58:28,172 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 55 treesize of output 57 [2022-11-16 10:58:28,247 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 16 [2022-11-16 10:58:28,492 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 10:58:28,493 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 55 treesize of output 53 [2022-11-16 10:58:32,022 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-16 10:58:32,022 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 109 treesize of output 93 [2022-11-16 10:58:35,144 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 10:58:35,144 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 10:58:35,144 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 10:58:35,144 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [67106102] [2022-11-16 10:58:35,144 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [67106102] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 10:58:35,144 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 10:58:35,144 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [24] imperfect sequences [] total 24 [2022-11-16 10:58:35,145 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [82769896] [2022-11-16 10:58:35,145 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 10:58:35,145 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-11-16 10:58:35,145 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 10:58:35,145 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-11-16 10:58:35,146 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=581, Unknown=0, NotChecked=0, Total=650 [2022-11-16 10:58:35,146 INFO L87 Difference]: Start difference. First operand 372 states and 446 transitions. Second operand has 26 states, 22 states have (on average 2.3181818181818183) internal successors, (51), 21 states have internal predecessors, (51), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-16 10:58:37,245 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 10:58:37,245 INFO L93 Difference]: Finished difference Result 424 states and 494 transitions. [2022-11-16 10:58:37,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-11-16 10:58:37,246 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 22 states have (on average 2.3181818181818183) internal successors, (51), 21 states have internal predecessors, (51), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 58 [2022-11-16 10:58:37,246 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 10:58:37,247 INFO L225 Difference]: With dead ends: 424 [2022-11-16 10:58:37,247 INFO L226 Difference]: Without dead ends: 424 [2022-11-16 10:58:37,247 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 29 SyntacticMatches, 5 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 293 ImplicationChecksByTransitivity, 6.7s TimeCoverageRelationStatistics Valid=139, Invalid=1193, Unknown=0, NotChecked=0, Total=1332 [2022-11-16 10:58:37,248 INFO L413 NwaCegarLoop]: 134 mSDtfsCounter, 162 mSDsluCounter, 1866 mSDsCounter, 0 mSdLazyCounter, 540 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 164 SdHoareTripleChecker+Valid, 2000 SdHoareTripleChecker+Invalid, 1957 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 540 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1396 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-11-16 10:58:37,248 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [164 Valid, 2000 Invalid, 1957 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 540 Invalid, 0 Unknown, 1396 Unchecked, 1.0s Time] [2022-11-16 10:58:37,249 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 424 states. [2022-11-16 10:58:37,253 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 424 to 374. [2022-11-16 10:58:37,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 374 states, 295 states have (on average 1.4033898305084747) internal successors, (414), 344 states have internal predecessors, (414), 15 states have call successors, (15), 14 states have call predecessors, (15), 15 states have return successors, (20), 15 states have call predecessors, (20), 15 states have call successors, (20) [2022-11-16 10:58:37,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 374 states to 374 states and 449 transitions. [2022-11-16 10:58:37,255 INFO L78 Accepts]: Start accepts. Automaton has 374 states and 449 transitions. Word has length 58 [2022-11-16 10:58:37,255 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 10:58:37,255 INFO L495 AbstractCegarLoop]: Abstraction has 374 states and 449 transitions. [2022-11-16 10:58:37,256 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 22 states have (on average 2.3181818181818183) internal successors, (51), 21 states have internal predecessors, (51), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-16 10:58:37,256 INFO L276 IsEmpty]: Start isEmpty. Operand 374 states and 449 transitions. [2022-11-16 10:58:37,256 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2022-11-16 10:58:37,256 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 10:58:37,257 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 10:58:37,272 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a381edf-ab01-41b6-92bc-f9af652b83c9/bin/uautomizer-tPACEb0tL8/mathsat -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 10:58:37,471 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 45 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a381edf-ab01-41b6-92bc-f9af652b83c9/bin/uautomizer-tPACEb0tL8/mathsat -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 10:58:37,471 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting free_reportsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [free_reportsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 73 more)] === [2022-11-16 10:58:37,471 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 10:58:37,471 INFO L85 PathProgramCache]: Analyzing trace with hash -1389571933, now seen corresponding path program 1 times [2022-11-16 10:58:37,472 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 10:58:37,472 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1191122316] [2022-11-16 10:58:37,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 10:58:37,472 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 10:58:37,472 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a381edf-ab01-41b6-92bc-f9af652b83c9/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 10:58:37,473 INFO L229 MonitoredProcess]: Starting monitored process 46 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a381edf-ab01-41b6-92bc-f9af652b83c9/bin/uautomizer-tPACEb0tL8/mathsat -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 10:58:37,479 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a381edf-ab01-41b6-92bc-f9af652b83c9/bin/uautomizer-tPACEb0tL8/mathsat -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 10:58:37,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:58:37,980 INFO L263 TraceCheckSpWp]: Trace formula consists of 355 conjuncts, 89 conjunts are in the unsatisfiable core [2022-11-16 10:58:37,990 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 10:58:38,056 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 10:58:38,196 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-16 10:58:38,269 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 10:58:38,270 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 20 [2022-11-16 10:58:38,352 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 10:58:38,352 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-11-16 10:58:38,661 INFO L321 Elim1Store]: treesize reduction 22, result has 29.0 percent of original size [2022-11-16 10:58:38,661 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 20 treesize of output 22 [2022-11-16 10:58:38,925 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-16 10:58:38,965 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18 [2022-11-16 10:58:39,440 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 10:58:39,441 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 10:58:39,442 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 10:58:39,444 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 10:58:39,445 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 12 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 43 treesize of output 57 [2022-11-16 10:58:39,465 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 9 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 37 [2022-11-16 10:58:39,513 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 10:58:39,514 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 10:58:39,516 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 10:58:39,518 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 10:58:39,519 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 12 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 47 [2022-11-16 10:58:40,149 INFO L321 Elim1Store]: treesize reduction 20, result has 48.7 percent of original size [2022-11-16 10:58:40,149 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 21 treesize of output 34 [2022-11-16 10:58:40,160 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-11-16 10:58:40,171 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-11-16 10:58:40,219 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-16 10:58:40,219 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 20 [2022-11-16 10:58:40,227 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-11-16 10:58:40,299 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-16 10:58:40,299 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 43 treesize of output 43 [2022-11-16 10:58:40,328 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 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 29 treesize of output 13 [2022-11-16 10:58:40,482 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-16 10:58:40,482 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 43 treesize of output 43 [2022-11-16 10:58:40,488 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 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 29 treesize of output 13 [2022-11-16 10:58:40,572 INFO L321 Elim1Store]: treesize reduction 20, result has 48.7 percent of original size [2022-11-16 10:58:40,572 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 21 treesize of output 34 [2022-11-16 10:58:40,588 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-11-16 10:58:40,595 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-11-16 10:58:40,641 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-16 10:58:40,641 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 20 [2022-11-16 10:58:40,650 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-11-16 10:58:40,891 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-16 10:58:40,891 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 43 treesize of output 43 [2022-11-16 10:58:40,899 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 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 29 treesize of output 13 [2022-11-16 10:58:40,985 INFO L321 Elim1Store]: treesize reduction 20, result has 48.7 percent of original size [2022-11-16 10:58:40,985 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 21 treesize of output 34 [2022-11-16 10:58:40,997 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-11-16 10:58:41,009 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-11-16 10:58:41,057 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-16 10:58:41,058 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 20 [2022-11-16 10:58:41,070 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-11-16 10:58:41,317 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 10:58:41,322 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 10:58:41,323 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 26 [2022-11-16 10:58:41,346 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 10:58:41,347 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-16 10:58:41,364 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 10:58:41,365 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 43 treesize of output 39 [2022-11-16 10:58:42,205 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 8 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 54 treesize of output 22 [2022-11-16 10:58:43,580 INFO L321 Elim1Store]: treesize reduction 22, result has 12.0 percent of original size [2022-11-16 10:58:43,580 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 59 treesize of output 37 [2022-11-16 10:58:43,587 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 47 treesize of output 26 [2022-11-16 10:58:43,943 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 10:58:43,943 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 10:58:43,943 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 10:58:43,943 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1191122316] [2022-11-16 10:58:43,943 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1191122316] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 10:58:43,943 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 10:58:43,944 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [29] imperfect sequences [] total 29 [2022-11-16 10:58:43,944 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1640623929] [2022-11-16 10:58:43,944 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 10:58:43,944 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2022-11-16 10:58:43,944 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 10:58:43,944 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2022-11-16 10:58:43,945 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=848, Unknown=0, NotChecked=0, Total=930 [2022-11-16 10:58:43,945 INFO L87 Difference]: Start difference. First operand 374 states and 449 transitions. Second operand has 31 states, 27 states have (on average 1.8888888888888888) internal successors, (51), 26 states have internal predecessors, (51), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-16 10:58:46,128 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 10:58:46,128 INFO L93 Difference]: Finished difference Result 455 states and 534 transitions. [2022-11-16 10:58:46,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2022-11-16 10:58:46,132 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 27 states have (on average 1.8888888888888888) internal successors, (51), 26 states have internal predecessors, (51), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 58 [2022-11-16 10:58:46,132 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 10:58:46,134 INFO L225 Difference]: With dead ends: 455 [2022-11-16 10:58:46,134 INFO L226 Difference]: Without dead ends: 455 [2022-11-16 10:58:46,135 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 25 SyntacticMatches, 3 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 397 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=145, Invalid=1495, Unknown=0, NotChecked=0, Total=1640 [2022-11-16 10:58:46,135 INFO L413 NwaCegarLoop]: 180 mSDtfsCounter, 156 mSDsluCounter, 3632 mSDsCounter, 0 mSdLazyCounter, 660 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 157 SdHoareTripleChecker+Valid, 3812 SdHoareTripleChecker+Invalid, 1593 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 660 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 916 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-11-16 10:58:46,135 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [157 Valid, 3812 Invalid, 1593 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 660 Invalid, 0 Unknown, 916 Unchecked, 1.4s Time] [2022-11-16 10:58:46,136 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 455 states. [2022-11-16 10:58:46,141 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 455 to 413. [2022-11-16 10:58:46,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 413 states, 328 states have (on average 1.420731707317073) internal successors, (466), 379 states have internal predecessors, (466), 19 states have call successors, (19), 16 states have call predecessors, (19), 17 states have return successors, (24), 17 states have call predecessors, (24), 19 states have call successors, (24) [2022-11-16 10:58:46,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 413 states to 413 states and 509 transitions. [2022-11-16 10:58:46,143 INFO L78 Accepts]: Start accepts. Automaton has 413 states and 509 transitions. Word has length 58 [2022-11-16 10:58:46,143 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 10:58:46,143 INFO L495 AbstractCegarLoop]: Abstraction has 413 states and 509 transitions. [2022-11-16 10:58:46,143 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 27 states have (on average 1.8888888888888888) internal successors, (51), 26 states have internal predecessors, (51), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-16 10:58:46,143 INFO L276 IsEmpty]: Start isEmpty. Operand 413 states and 509 transitions. [2022-11-16 10:58:46,144 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2022-11-16 10:58:46,144 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 10:58:46,144 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 10:58:46,158 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a381edf-ab01-41b6-92bc-f9af652b83c9/bin/uautomizer-tPACEb0tL8/mathsat -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 10:58:46,345 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 46 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a381edf-ab01-41b6-92bc-f9af652b83c9/bin/uautomizer-tPACEb0tL8/mathsat -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 10:58:46,345 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting free_reportsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [free_reportsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 73 more)] === [2022-11-16 10:58:46,345 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 10:58:46,345 INFO L85 PathProgramCache]: Analyzing trace with hash -1664331547, now seen corresponding path program 1 times [2022-11-16 10:58:46,346 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 10:58:46,346 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [385942380] [2022-11-16 10:58:46,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 10:58:46,346 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 10:58:46,346 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a381edf-ab01-41b6-92bc-f9af652b83c9/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 10:58:46,347 INFO L229 MonitoredProcess]: Starting monitored process 47 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a381edf-ab01-41b6-92bc-f9af652b83c9/bin/uautomizer-tPACEb0tL8/mathsat -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 10:58:46,348 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a381edf-ab01-41b6-92bc-f9af652b83c9/bin/uautomizer-tPACEb0tL8/mathsat -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 10:58:46,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:58:46,858 INFO L263 TraceCheckSpWp]: Trace formula consists of 355 conjuncts, 74 conjunts are in the unsatisfiable core [2022-11-16 10:58:46,862 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 10:58:47,012 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-16 10:58:47,077 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 10:58:47,077 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 20 [2022-11-16 10:58:47,142 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 10:58:47,142 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-11-16 10:58:47,433 INFO L321 Elim1Store]: treesize reduction 22, result has 29.0 percent of original size [2022-11-16 10:58:47,434 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 20 treesize of output 22 [2022-11-16 10:58:47,698 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18 [2022-11-16 10:58:47,711 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-16 10:58:47,965 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 10:58:47,966 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 10:58:47,968 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 10:58:47,969 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 10:58:47,970 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 12 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 43 treesize of output 57 [2022-11-16 10:58:48,000 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 10:58:48,002 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 10:58:48,003 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 10:58:48,005 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 10:58:48,006 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 12 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 47 [2022-11-16 10:58:48,272 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-16 10:58:48,272 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 20 [2022-11-16 10:58:48,281 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-11-16 10:58:48,340 INFO L321 Elim1Store]: treesize reduction 20, result has 48.7 percent of original size [2022-11-16 10:58:48,340 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 21 treesize of output 34 [2022-11-16 10:58:48,347 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-11-16 10:58:48,361 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-11-16 10:58:48,511 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-16 10:58:48,511 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 20 [2022-11-16 10:58:48,520 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-11-16 10:58:48,591 INFO L321 Elim1Store]: treesize reduction 20, result has 48.7 percent of original size [2022-11-16 10:58:48,592 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 21 treesize of output 34 [2022-11-16 10:58:48,601 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-11-16 10:58:48,612 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-11-16 10:58:48,799 INFO L321 Elim1Store]: treesize reduction 20, result has 48.7 percent of original size [2022-11-16 10:58:48,800 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 21 treesize of output 34 [2022-11-16 10:58:48,817 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-11-16 10:58:48,834 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-11-16 10:58:48,876 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-16 10:58:48,876 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 20 [2022-11-16 10:58:48,883 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-11-16 10:58:49,052 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 10:58:49,057 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 10:58:49,059 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 26 [2022-11-16 10:58:49,085 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 10:58:49,086 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-16 10:58:51,047 INFO L321 Elim1Store]: treesize reduction 22, result has 12.0 percent of original size [2022-11-16 10:58:51,047 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 53 treesize of output 31 [2022-11-16 10:58:51,055 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 20 [2022-11-16 10:58:51,473 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 10:58:51,473 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 10:58:51,473 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 10:58:51,473 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [385942380] [2022-11-16 10:58:51,473 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [385942380] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 10:58:51,473 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 10:58:51,473 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26 [2022-11-16 10:58:51,473 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1555257095] [2022-11-16 10:58:51,473 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 10:58:51,474 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-11-16 10:58:51,474 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 10:58:51,474 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-11-16 10:58:51,474 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=686, Unknown=0, NotChecked=0, Total=756 [2022-11-16 10:58:51,475 INFO L87 Difference]: Start difference. First operand 413 states and 509 transitions. Second operand has 28 states, 24 states have (on average 2.125) internal successors, (51), 23 states have internal predecessors, (51), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-16 10:58:52,362 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 10:58:52,362 INFO L93 Difference]: Finished difference Result 445 states and 543 transitions. [2022-11-16 10:58:52,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-11-16 10:58:52,363 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 24 states have (on average 2.125) internal successors, (51), 23 states have internal predecessors, (51), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 58 [2022-11-16 10:58:52,363 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 10:58:52,365 INFO L225 Difference]: With dead ends: 445 [2022-11-16 10:58:52,365 INFO L226 Difference]: Without dead ends: 445 [2022-11-16 10:58:52,365 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 28 SyntacticMatches, 3 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 248 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=119, Invalid=1071, Unknown=0, NotChecked=0, Total=1190 [2022-11-16 10:58:52,366 INFO L413 NwaCegarLoop]: 182 mSDtfsCounter, 66 mSDsluCounter, 2971 mSDsCounter, 0 mSdLazyCounter, 129 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 67 SdHoareTripleChecker+Valid, 3153 SdHoareTripleChecker+Invalid, 986 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 129 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 850 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-16 10:58:52,366 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [67 Valid, 3153 Invalid, 986 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 129 Invalid, 0 Unknown, 850 Unchecked, 0.4s Time] [2022-11-16 10:58:52,367 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 445 states. [2022-11-16 10:58:52,371 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 445 to 413. [2022-11-16 10:58:52,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 413 states, 328 states have (on average 1.4176829268292683) internal successors, (465), 379 states have internal predecessors, (465), 19 states have call successors, (19), 16 states have call predecessors, (19), 17 states have return successors, (24), 17 states have call predecessors, (24), 19 states have call successors, (24) [2022-11-16 10:58:52,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 413 states to 413 states and 508 transitions. [2022-11-16 10:58:52,373 INFO L78 Accepts]: Start accepts. Automaton has 413 states and 508 transitions. Word has length 58 [2022-11-16 10:58:52,373 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 10:58:52,373 INFO L495 AbstractCegarLoop]: Abstraction has 413 states and 508 transitions. [2022-11-16 10:58:52,373 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 24 states have (on average 2.125) internal successors, (51), 23 states have internal predecessors, (51), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-16 10:58:52,374 INFO L276 IsEmpty]: Start isEmpty. Operand 413 states and 508 transitions. [2022-11-16 10:58:52,374 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2022-11-16 10:58:52,374 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 10:58:52,374 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 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 10:58:52,396 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a381edf-ab01-41b6-92bc-f9af652b83c9/bin/uautomizer-tPACEb0tL8/mathsat -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 10:58:52,575 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 47 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a381edf-ab01-41b6-92bc-f9af652b83c9/bin/uautomizer-tPACEb0tL8/mathsat -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 10:58:52,575 INFO L420 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr26REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [free_reportsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 73 more)] === [2022-11-16 10:58:52,575 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 10:58:52,575 INFO L85 PathProgramCache]: Analyzing trace with hash -663909690, now seen corresponding path program 1 times [2022-11-16 10:58:52,576 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 10:58:52,576 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1596272410] [2022-11-16 10:58:52,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 10:58:52,576 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 10:58:52,576 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a381edf-ab01-41b6-92bc-f9af652b83c9/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 10:58:52,578 INFO L229 MonitoredProcess]: Starting monitored process 48 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a381edf-ab01-41b6-92bc-f9af652b83c9/bin/uautomizer-tPACEb0tL8/mathsat -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 10:58:52,591 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a381edf-ab01-41b6-92bc-f9af652b83c9/bin/uautomizer-tPACEb0tL8/mathsat -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 10:58:53,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:58:53,043 INFO L263 TraceCheckSpWp]: Trace formula consists of 377 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-16 10:58:53,044 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 10:58:53,063 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 10:58:53,063 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 10:58:53,063 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 10:58:53,063 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1596272410] [2022-11-16 10:58:53,063 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1596272410] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 10:58:53,063 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 10:58:53,063 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 10:58:53,063 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1528325830] [2022-11-16 10:58:53,064 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 10:58:53,064 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 10:58:53,064 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 10:58:53,064 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 10:58:53,064 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 10:58:53,064 INFO L87 Difference]: Start difference. First operand 413 states and 508 transitions. Second operand has 4 states, 3 states have (on average 16.0) internal successors, (48), 4 states have internal predecessors, (48), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2022-11-16 10:58:53,709 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 10:58:53,709 INFO L93 Difference]: Finished difference Result 535 states and 640 transitions. [2022-11-16 10:58:53,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 10:58:53,710 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 16.0) internal successors, (48), 4 states have internal predecessors, (48), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 59 [2022-11-16 10:58:53,710 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 10:58:53,711 INFO L225 Difference]: With dead ends: 535 [2022-11-16 10:58:53,711 INFO L226 Difference]: Without dead ends: 535 [2022-11-16 10:58:53,711 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 57 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 10:58:53,712 INFO L413 NwaCegarLoop]: 225 mSDtfsCounter, 128 mSDsluCounter, 259 mSDsCounter, 0 mSdLazyCounter, 189 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 128 SdHoareTripleChecker+Valid, 484 SdHoareTripleChecker+Invalid, 192 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 189 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-16 10:58:53,712 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [128 Valid, 484 Invalid, 192 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 189 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-16 10:58:53,713 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 535 states. [2022-11-16 10:58:53,718 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 535 to 412. [2022-11-16 10:58:53,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 412 states, 328 states have (on average 1.4146341463414633) internal successors, (464), 378 states have internal predecessors, (464), 19 states have call successors, (19), 16 states have call predecessors, (19), 17 states have return successors, (24), 17 states have call predecessors, (24), 19 states have call successors, (24) [2022-11-16 10:58:53,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 412 states to 412 states and 507 transitions. [2022-11-16 10:58:53,719 INFO L78 Accepts]: Start accepts. Automaton has 412 states and 507 transitions. Word has length 59 [2022-11-16 10:58:53,720 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 10:58:53,720 INFO L495 AbstractCegarLoop]: Abstraction has 412 states and 507 transitions. [2022-11-16 10:58:53,720 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 16.0) internal successors, (48), 4 states have internal predecessors, (48), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2022-11-16 10:58:53,720 INFO L276 IsEmpty]: Start isEmpty. Operand 412 states and 507 transitions. [2022-11-16 10:58:53,721 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2022-11-16 10:58:53,721 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 10:58:53,721 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 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 10:58:53,745 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a381edf-ab01-41b6-92bc-f9af652b83c9/bin/uautomizer-tPACEb0tL8/mathsat -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 10:58:53,935 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 48 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a381edf-ab01-41b6-92bc-f9af652b83c9/bin/uautomizer-tPACEb0tL8/mathsat -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 10:58:53,935 INFO L420 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr27REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [free_reportsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 73 more)] === [2022-11-16 10:58:53,935 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 10:58:53,935 INFO L85 PathProgramCache]: Analyzing trace with hash -663909689, now seen corresponding path program 1 times [2022-11-16 10:58:53,936 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 10:58:53,936 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1882002431] [2022-11-16 10:58:53,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 10:58:53,936 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 10:58:53,936 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a381edf-ab01-41b6-92bc-f9af652b83c9/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 10:58:53,937 INFO L229 MonitoredProcess]: Starting monitored process 49 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a381edf-ab01-41b6-92bc-f9af652b83c9/bin/uautomizer-tPACEb0tL8/mathsat -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 10:58:53,939 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a381edf-ab01-41b6-92bc-f9af652b83c9/bin/uautomizer-tPACEb0tL8/mathsat -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 10:58:54,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:58:54,705 INFO L263 TraceCheckSpWp]: Trace formula consists of 377 conjuncts, 84 conjunts are in the unsatisfiable core [2022-11-16 10:58:54,710 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 10:58:54,926 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-16 10:58:54,981 INFO L321 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2022-11-16 10:58:54,981 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 20 [2022-11-16 10:58:55,211 INFO L321 Elim1Store]: treesize reduction 22, result has 29.0 percent of original size [2022-11-16 10:58:55,211 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 20 treesize of output 22 [2022-11-16 10:58:55,443 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18 [2022-11-16 10:58:55,457 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-16 10:58:55,855 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 10:58:55,857 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 10:58:55,858 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 10:58:55,859 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 10:58:55,860 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 12 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 43 treesize of output 57 [2022-11-16 10:58:55,883 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 9 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 37 [2022-11-16 10:58:55,905 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 10:58:55,906 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 10:58:55,908 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 10:58:55,909 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 10:58:55,910 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 12 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 47 [2022-11-16 10:58:56,391 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 43 treesize of output 39 [2022-11-16 10:58:56,432 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-16 10:58:56,432 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 30 [2022-11-16 10:58:56,456 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-16 10:58:56,606 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 43 treesize of output 39 [2022-11-16 10:58:56,647 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-16 10:58:56,647 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 30 [2022-11-16 10:58:56,666 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-16 10:58:56,862 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-16 10:58:56,871 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 43 treesize of output 39 [2022-11-16 10:58:56,915 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-16 10:58:56,915 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 30 [2022-11-16 10:58:57,137 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 43 treesize of output 39 [2022-11-16 10:58:57,146 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 10:58:57,147 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 26 [2022-11-16 10:58:57,160 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-16 10:58:57,624 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-11-16 10:58:57,761 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 7 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 54 treesize of output 22 [2022-11-16 10:58:58,015 INFO L321 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2022-11-16 10:58:58,015 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 16 [2022-11-16 10:58:58,455 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 10:58:58,455 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 10:58:58,837 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 23 [2022-11-16 10:59:01,392 WARN L833 $PredicateComparison]: unable to prove that (and (forall ((v_ArrVal_3427 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_3425 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (let ((.cse1 (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_fetch_item_~item#1.base| v_ArrVal_3427))) (select (select .cse1 (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_fetch_item_~item#1.base| v_ArrVal_3425) |c_ULTIMATE.start_hid_open_report_~parser~0#1.base|) |c_ULTIMATE.start_hid_open_report_~parser~0#1.offset|)) (select (select .cse1 |c_ULTIMATE.start_hid_open_report_~parser~0#1.base|) |c_ULTIMATE.start_hid_open_report_~parser~0#1.offset|))))) (bvule (bvadd (_ bv8 32) .cse0) (bvadd .cse0 (_ bv12 32))))) (forall ((v_ArrVal_3427 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_3426 (Array (_ BitVec 32) (_ BitVec 8))) (v_ArrVal_3425 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse2 (let ((.cse4 (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_fetch_item_~item#1.base| v_ArrVal_3427))) (select (select .cse4 (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_fetch_item_~item#1.base| v_ArrVal_3425) |c_ULTIMATE.start_hid_open_report_~parser~0#1.base|) |c_ULTIMATE.start_hid_open_report_~parser~0#1.offset|)) (select (select .cse4 |c_ULTIMATE.start_hid_open_report_~parser~0#1.base|) |c_ULTIMATE.start_hid_open_report_~parser~0#1.offset|))))) (bvule (bvadd .cse2 (_ bv12 32)) (bvadd (_ bv16 32) (bvmul (_ bv4 32) (let ((.cse3 (select (store |c_#memory_int| |c_ULTIMATE.start_fetch_item_~item#1.base| v_ArrVal_3426) |c_ULTIMATE.start_hid_open_report_~parser~0#1.base|))) (concat (concat (concat (select .cse3 (bvadd |c_ULTIMATE.start_hid_open_report_~parser~0#1.offset| (_ bv7 32))) (select .cse3 (bvadd (_ bv6 32) |c_ULTIMATE.start_hid_open_report_~parser~0#1.offset|))) (select .cse3 (bvadd |c_ULTIMATE.start_hid_open_report_~parser~0#1.offset| (_ bv5 32)))) (select .cse3 (bvadd (_ bv4 32) |c_ULTIMATE.start_hid_open_report_~parser~0#1.offset|))))) .cse2))))) is different from false [2022-11-16 10:59:01,619 WARN L833 $PredicateComparison]: unable to prove that (and (forall ((v_ArrVal_3427 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_3426 (Array (_ BitVec 32) (_ BitVec 8))) (v_ArrVal_3425 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (let ((.cse2 (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_hid_open_report_~#item~0#1.base| v_ArrVal_3427))) (select (select .cse2 (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_hid_open_report_~#item~0#1.base| v_ArrVal_3425) |c_ULTIMATE.start_hid_open_report_~parser~0#1.base|) |c_ULTIMATE.start_hid_open_report_~parser~0#1.offset|)) (select (select .cse2 |c_ULTIMATE.start_hid_open_report_~parser~0#1.base|) |c_ULTIMATE.start_hid_open_report_~parser~0#1.offset|))))) (bvule (bvadd .cse0 (_ bv12 32)) (bvadd .cse0 (_ bv16 32) (bvmul (let ((.cse1 (select (store |c_#memory_int| |c_ULTIMATE.start_hid_open_report_~#item~0#1.base| v_ArrVal_3426) |c_ULTIMATE.start_hid_open_report_~parser~0#1.base|))) (concat (concat (concat (select .cse1 (bvadd |c_ULTIMATE.start_hid_open_report_~parser~0#1.offset| (_ bv7 32))) (select .cse1 (bvadd (_ bv6 32) |c_ULTIMATE.start_hid_open_report_~parser~0#1.offset|))) (select .cse1 (bvadd |c_ULTIMATE.start_hid_open_report_~parser~0#1.offset| (_ bv5 32)))) (select .cse1 (bvadd (_ bv4 32) |c_ULTIMATE.start_hid_open_report_~parser~0#1.offset|)))) (_ bv4 32)))))) (forall ((v_ArrVal_3427 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_3425 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse3 (let ((.cse4 (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_hid_open_report_~#item~0#1.base| v_ArrVal_3427))) (select (select .cse4 (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_hid_open_report_~#item~0#1.base| v_ArrVal_3425) |c_ULTIMATE.start_hid_open_report_~parser~0#1.base|) |c_ULTIMATE.start_hid_open_report_~parser~0#1.offset|)) (select (select .cse4 |c_ULTIMATE.start_hid_open_report_~parser~0#1.base|) |c_ULTIMATE.start_hid_open_report_~parser~0#1.offset|))))) (bvule (bvadd .cse3 (_ bv8 32)) (bvadd .cse3 (_ bv12 32)))))) is different from false [2022-11-16 10:59:01,750 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-16 10:59:01,751 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 4 case distinctions, treesize of input 360 treesize of output 289 [2022-11-16 10:59:01,777 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-16 10:59:01,778 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 510 treesize of output 462 [2022-11-16 10:59:01,804 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 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 228 treesize of output 212 [2022-11-16 10:59:39,629 WARN L233 SmtUtils]: Spent 32.27s on a formula simplification. DAG size of input: 80 DAG size of output: 78 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-16 10:59:58,945 WARN L233 SmtUtils]: Spent 13.84s on a formula simplification that was a NOOP. DAG size: 78 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-16 11:00:21,889 WARN L233 SmtUtils]: Spent 12.08s on a formula simplification that was a NOOP. DAG size: 75 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-16 11:00:22,181 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-16 11:00:22,181 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 5 case distinctions, treesize of input 226 treesize of output 219 [2022-11-16 11:00:22,201 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:00:22,210 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 169 treesize of output 165 [2022-11-16 11:00:22,227 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 160 treesize of output 156 [2022-11-16 11:00:22,419 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-16 11:00:22,420 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 5 case distinctions, treesize of input 226 treesize of output 219 [2022-11-16 11:00:22,431 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 11:00:22,441 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 173 treesize of output 161 [2022-11-16 11:00:22,686 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-16 11:00:22,686 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 5 case distinctions, treesize of input 217 treesize of output 210 [2022-11-16 11:00:22,709 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 324 treesize of output 312 [2022-11-16 11:00:22,758 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 155 treesize of output 151 [2022-11-16 11:00:23,112 WARN L833 $PredicateComparison]: unable to prove that (let ((.cse7 (= |c_ULTIMATE.start_hid_open_report_~#item~0#1.base| |c_ULTIMATE.start_hid_open_report_~parser~0#1.base|))) (let ((.cse8 (not .cse7)) (.cse2 (store (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_hid_open_report_~parser~0#1.base|) |c_ULTIMATE.start_hid_open_report_~parser~0#1.offset| |c_ULTIMATE.start_hid_open_report_~device#1.offset|)) (.cse3 (bvadd (_ bv4 32) |c_ULTIMATE.start_hid_open_report_~parser~0#1.offset|)) (.cse4 (bvadd |c_ULTIMATE.start_hid_open_report_~parser~0#1.offset| (_ bv5 32))) (.cse5 (bvadd (_ bv6 32) |c_ULTIMATE.start_hid_open_report_~parser~0#1.offset|)) (.cse6 (bvadd |c_ULTIMATE.start_hid_open_report_~parser~0#1.offset| (_ bv7 32)))) (and (or (forall ((v_ArrVal_3427 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_3409 (_ BitVec 32)) (v_ArrVal_3407 (_ BitVec 32)) (v_ArrVal_3408 (_ BitVec 32)) (v_ArrVal_3415 (_ BitVec 32))) (let ((.cse0 (let ((.cse1 (store (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_hid_open_report_~parser~0#1.base| (store (store (store (store .cse2 .cse3 v_ArrVal_3409) .cse4 v_ArrVal_3407) .cse5 v_ArrVal_3408) .cse6 v_ArrVal_3415)) |c_ULTIMATE.start_hid_open_report_~#item~0#1.base| v_ArrVal_3427))) (select (select .cse1 |c_ULTIMATE.start_hid_open_report_~device#1.base|) (select (select .cse1 |c_ULTIMATE.start_hid_open_report_~parser~0#1.base|) |c_ULTIMATE.start_hid_open_report_~parser~0#1.offset|))))) (bvule (bvadd (_ bv8 32) .cse0) (bvadd .cse0 (_ bv12 32))))) .cse7) (or .cse8 (forall ((v_arrayElimCell_469 (_ BitVec 8)) (v_ArrVal_3427 (Array (_ BitVec 32) (_ BitVec 32))) (v_arrayElimCell_468 (_ BitVec 8)) (v_ArrVal_3409 (_ BitVec 32)) (v_arrayElimCell_467 (_ BitVec 8)) (v_arrayElimCell_466 (_ BitVec 8)) (v_ArrVal_3407 (_ BitVec 32)) (v_ArrVal_3408 (_ BitVec 32)) (v_ArrVal_3415 (_ BitVec 32)) (v_arrayElimCell_471 (_ BitVec 32))) (let ((.cse9 (let ((.cse10 (store (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_hid_open_report_~parser~0#1.base| (store (store (store (store .cse2 .cse3 v_ArrVal_3409) .cse4 v_ArrVal_3407) .cse5 v_ArrVal_3408) .cse6 v_ArrVal_3415)) |c_ULTIMATE.start_hid_open_report_~#item~0#1.base| v_ArrVal_3427))) (select (select .cse10 v_arrayElimCell_471) (select (select .cse10 |c_ULTIMATE.start_hid_open_report_~parser~0#1.base|) |c_ULTIMATE.start_hid_open_report_~parser~0#1.offset|))))) (bvule (bvadd .cse9 (_ bv12 32)) (bvadd (_ bv16 32) (bvmul (_ bv4 32) (concat (concat (concat v_arrayElimCell_468 v_arrayElimCell_469) v_arrayElimCell_467) v_arrayElimCell_466)) .cse9))))) (or .cse8 (forall ((v_ArrVal_3427 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_3409 (_ BitVec 32)) (v_ArrVal_3407 (_ BitVec 32)) (v_ArrVal_3408 (_ BitVec 32)) (v_ArrVal_3415 (_ BitVec 32)) (v_arrayElimCell_474 (_ BitVec 32))) (let ((.cse11 (let ((.cse12 (store (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_hid_open_report_~parser~0#1.base| (store (store (store (store .cse2 .cse3 v_ArrVal_3409) .cse4 v_ArrVal_3407) .cse5 v_ArrVal_3408) .cse6 v_ArrVal_3415)) |c_ULTIMATE.start_hid_open_report_~#item~0#1.base| v_ArrVal_3427))) (select (select .cse12 v_arrayElimCell_474) (select (select .cse12 |c_ULTIMATE.start_hid_open_report_~parser~0#1.base|) |c_ULTIMATE.start_hid_open_report_~parser~0#1.offset|))))) (bvule (bvadd (_ bv8 32) .cse11) (bvadd .cse11 (_ bv12 32)))))) (or (forall ((v_ArrVal_3427 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_3409 (_ BitVec 32)) (v_ArrVal_3407 (_ BitVec 32)) (v_ArrVal_3408 (_ BitVec 32)) (v_ArrVal_3415 (_ BitVec 32))) (let ((.cse13 (let ((.cse14 (store (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_hid_open_report_~parser~0#1.base| (store (store (store (store .cse2 .cse3 v_ArrVal_3409) .cse4 v_ArrVal_3407) .cse5 v_ArrVal_3408) .cse6 v_ArrVal_3415)) |c_ULTIMATE.start_hid_open_report_~#item~0#1.base| v_ArrVal_3427))) (select (select .cse14 |c_ULTIMATE.start_hid_open_report_~device#1.base|) (select (select .cse14 |c_ULTIMATE.start_hid_open_report_~parser~0#1.base|) |c_ULTIMATE.start_hid_open_report_~parser~0#1.offset|))))) (bvule (bvadd .cse13 (_ bv12 32)) (bvadd (_ bv16 32) (bvmul (_ bv4 32) (concat (concat (concat (_ bv0 8) (_ bv0 8)) (_ bv0 8)) (_ bv1 8))) .cse13)))) .cse7) (forall ((v_ArrVal_3427 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_3409 (_ BitVec 32)) (v_ArrVal_3407 (_ BitVec 32)) (v_ArrVal_3408 (_ BitVec 32)) (v_ArrVal_3415 (_ BitVec 32))) (let ((.cse16 (store (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_hid_open_report_~parser~0#1.base| (store (store (store (store .cse2 .cse3 v_ArrVal_3409) .cse4 v_ArrVal_3407) .cse5 v_ArrVal_3408) .cse6 v_ArrVal_3415)) |c_ULTIMATE.start_hid_open_report_~#item~0#1.base| v_ArrVal_3427))) (let ((.cse17 (select (select .cse16 |c_ULTIMATE.start_hid_open_report_~parser~0#1.base|) |c_ULTIMATE.start_hid_open_report_~parser~0#1.offset|))) (or (forall ((v_arrayElimCell_474 (_ BitVec 32))) (let ((.cse15 (select (select .cse16 v_arrayElimCell_474) .cse17))) (bvule (bvadd (_ bv8 32) .cse15) (bvadd .cse15 (_ bv12 32))))) (let ((.cse18 (select (select .cse16 |c_ULTIMATE.start_hid_open_report_~device#1.base|) .cse17))) (bvule (bvadd (_ bv8 32) .cse18) (bvadd .cse18 (_ bv12 32))))))))))) is different from false [2022-11-16 11:00:46,711 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 11:00:46,712 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1882002431] [2022-11-16 11:00:46,712 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1882002431] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 11:00:46,712 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [584813003] [2022-11-16 11:00:46,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:00:46,712 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-16 11:00:46,712 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a381edf-ab01-41b6-92bc-f9af652b83c9/bin/uautomizer-tPACEb0tL8/cvc4 [2022-11-16 11:00:46,714 INFO L229 MonitoredProcess]: Starting monitored process 50 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a381edf-ab01-41b6-92bc-f9af652b83c9/bin/uautomizer-tPACEb0tL8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-16 11:00:46,715 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a381edf-ab01-41b6-92bc-f9af652b83c9/bin/uautomizer-tPACEb0tL8/cvc4 --incremental --print-success --lang smt (50)] Waiting until timeout for monitored process [2022-11-16 11:00:47,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:00:47,771 INFO L263 TraceCheckSpWp]: Trace formula consists of 377 conjuncts, 102 conjunts are in the unsatisfiable core [2022-11-16 11:00:47,777 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:00:50,614 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-16 11:00:51,561 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-16 11:00:51,561 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2022-11-16 11:00:57,429 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-16 11:00:57,458 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-16 11:00:58,642 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:00:58,643 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2022-11-16 11:00:58,695 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:00:58,713 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:00:58,714 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 36 [2022-11-16 11:00:59,898 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2022-11-16 11:00:59,913 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 3 [2022-11-16 11:01:03,471 INFO L321 Elim1Store]: treesize reduction 19, result has 47.2 percent of original size [2022-11-16 11:01:03,471 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 26 [2022-11-16 11:01:03,579 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:01:03,825 INFO L321 Elim1Store]: treesize reduction 56, result has 35.6 percent of original size [2022-11-16 11:01:03,825 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 30 treesize of output 51 [2022-11-16 11:01:07,033 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 63 treesize of output 42 [2022-11-16 11:01:07,171 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18 [2022-11-16 11:01:09,312 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:01:09,319 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:01:09,325 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:01:09,331 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:01:09,338 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-16 11:01:09,338 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 10 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 87 treesize of output 81 [2022-11-16 11:01:09,497 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:01:09,503 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:01:09,509 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:01:09,515 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:01:09,521 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:01:09,522 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 12 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 43 treesize of output 57 [2022-11-16 11:01:11,386 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:01:11,395 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:01:11,401 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-16 11:01:11,401 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 65 treesize of output 60 [2022-11-16 11:01:11,597 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:01:11,850 INFO L321 Elim1Store]: treesize reduction 20, result has 48.7 percent of original size [2022-11-16 11:01:11,850 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 21 treesize of output 34 [2022-11-16 11:01:11,920 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-11-16 11:01:13,682 INFO L321 Elim1Store]: treesize reduction 20, result has 57.4 percent of original size [2022-11-16 11:01:13,683 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 21 treesize of output 42 [2022-11-16 11:01:13,817 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-11-16 11:01:13,833 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-11-16 11:01:13,912 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:01:13,919 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:01:13,924 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-16 11:01:13,925 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 65 treesize of output 60 [2022-11-16 11:01:15,335 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:01:15,341 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:01:15,346 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-16 11:01:15,346 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 65 treesize of output 60 [2022-11-16 11:01:15,508 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:01:15,702 INFO L321 Elim1Store]: treesize reduction 20, result has 48.7 percent of original size [2022-11-16 11:01:15,702 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 21 treesize of output 34 [2022-11-16 11:01:15,766 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-11-16 11:01:17,027 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:01:17,034 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:01:17,040 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-16 11:01:17,040 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 65 treesize of output 60 [2022-11-16 11:01:17,084 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:01:17,091 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:01:17,097 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-16 11:01:17,097 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 26 [2022-11-16 11:01:23,424 INFO L321 Elim1Store]: treesize reduction 17, result has 32.0 percent of original size [2022-11-16 11:01:23,424 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 89 treesize of output 55 [2022-11-16 11:01:23,506 INFO L321 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2022-11-16 11:01:23,506 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 16 [2022-11-16 11:01:27,917 WARN L855 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_3574 (_ BitVec 32)) (|ldv_zalloc_#Ultimate.meminit_#ptr#1.base| (_ BitVec 32))) (and (= (_ bv0 1) (select |c_old(#valid)| |ldv_zalloc_#Ultimate.meminit_#ptr#1.base|)) (= (store |c_old(#length)| |ldv_zalloc_#Ultimate.meminit_#ptr#1.base| v_ArrVal_3574) |c_#length|))) is different from true [2022-11-16 11:01:28,012 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:01:28,013 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2022-11-16 11:01:28,192 INFO L321 Elim1Store]: treesize reduction 18, result has 41.9 percent of original size [2022-11-16 11:01:28,193 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 27 treesize of output 31 [2022-11-16 11:01:30,822 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 3 not checked. [2022-11-16 11:01:30,822 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:01:38,663 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [584813003] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 11:01:38,663 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-16 11:01:38,663 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 30] total 58 [2022-11-16 11:01:38,663 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1000818681] [2022-11-16 11:01:38,664 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-16 11:01:38,664 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 59 states [2022-11-16 11:01:38,664 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 11:01:38,665 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 59 interpolants. [2022-11-16 11:01:38,666 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=238, Invalid=4995, Unknown=39, NotChecked=580, Total=5852 [2022-11-16 11:01:38,666 INFO L87 Difference]: Start difference. First operand 412 states and 507 transitions. Second operand has 59 states, 54 states have (on average 1.8888888888888888) internal successors, (102), 49 states have internal predecessors, (102), 8 states have call successors, (8), 7 states have call predecessors, (8), 8 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2022-11-16 11:02:19,051 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:02:19,052 INFO L93 Difference]: Finished difference Result 511 states and 604 transitions. [2022-11-16 11:02:19,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2022-11-16 11:02:19,052 INFO L78 Accepts]: Start accepts. Automaton has has 59 states, 54 states have (on average 1.8888888888888888) internal successors, (102), 49 states have internal predecessors, (102), 8 states have call successors, (8), 7 states have call predecessors, (8), 8 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) Word has length 59 [2022-11-16 11:02:19,053 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:02:19,054 INFO L225 Difference]: With dead ends: 511 [2022-11-16 11:02:19,054 INFO L226 Difference]: Without dead ends: 511 [2022-11-16 11:02:19,056 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 194 GetRequests, 83 SyntacticMatches, 9 SemanticMatches, 102 ConstructedPredicates, 4 IntricatePredicates, 0 DeprecatedPredicates, 2646 ImplicationChecksByTransitivity, 175.1s TimeCoverageRelationStatistics Valid=455, Invalid=9415, Unknown=46, NotChecked=796, Total=10712 [2022-11-16 11:02:19,057 INFO L413 NwaCegarLoop]: 133 mSDtfsCounter, 311 mSDsluCounter, 3907 mSDsCounter, 0 mSdLazyCounter, 1833 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 314 SdHoareTripleChecker+Valid, 4040 SdHoareTripleChecker+Invalid, 4630 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 1833 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 2754 IncrementalHoareTripleChecker+Unchecked, 12.1s IncrementalHoareTripleChecker+Time [2022-11-16 11:02:19,057 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [314 Valid, 4040 Invalid, 4630 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 1833 Invalid, 0 Unknown, 2754 Unchecked, 12.1s Time] [2022-11-16 11:02:19,057 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 511 states. [2022-11-16 11:02:19,060 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 511 to 422. [2022-11-16 11:02:19,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 422 states, 336 states have (on average 1.4077380952380953) internal successors, (473), 386 states have internal predecessors, (473), 20 states have call successors, (20), 17 states have call predecessors, (20), 18 states have return successors, (25), 18 states have call predecessors, (25), 20 states have call successors, (25) [2022-11-16 11:02:19,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 422 states to 422 states and 518 transitions. [2022-11-16 11:02:19,062 INFO L78 Accepts]: Start accepts. Automaton has 422 states and 518 transitions. Word has length 59 [2022-11-16 11:02:19,062 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:02:19,062 INFO L495 AbstractCegarLoop]: Abstraction has 422 states and 518 transitions. [2022-11-16 11:02:19,063 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 59 states, 54 states have (on average 1.8888888888888888) internal successors, (102), 49 states have internal predecessors, (102), 8 states have call successors, (8), 7 states have call predecessors, (8), 8 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2022-11-16 11:02:19,063 INFO L276 IsEmpty]: Start isEmpty. Operand 422 states and 518 transitions. [2022-11-16 11:02:19,063 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2022-11-16 11:02:19,064 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:02:19,064 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:02:19,071 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a381edf-ab01-41b6-92bc-f9af652b83c9/bin/uautomizer-tPACEb0tL8/cvc4 --incremental --print-success --lang smt (50)] Ended with exit code 0 [2022-11-16 11:02:19,276 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a381edf-ab01-41b6-92bc-f9af652b83c9/bin/uautomizer-tPACEb0tL8/mathsat -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 11:02:19,465 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 50 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a381edf-ab01-41b6-92bc-f9af652b83c9/bin/uautomizer-tPACEb0tL8/cvc4 --incremental --print-success --lang smt,49 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a381edf-ab01-41b6-92bc-f9af652b83c9/bin/uautomizer-tPACEb0tL8/mathsat -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 11:02:19,466 INFO L420 AbstractCegarLoop]: === Iteration 49 === Targeting free_reportsErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [free_reportsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 73 more)] === [2022-11-16 11:02:19,466 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:02:19,466 INFO L85 PathProgramCache]: Analyzing trace with hash 356199651, now seen corresponding path program 1 times [2022-11-16 11:02:19,467 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 11:02:19,467 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [668532456] [2022-11-16 11:02:19,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:02:19,467 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 11:02:19,467 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a381edf-ab01-41b6-92bc-f9af652b83c9/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 11:02:19,468 INFO L229 MonitoredProcess]: Starting monitored process 51 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a381edf-ab01-41b6-92bc-f9af652b83c9/bin/uautomizer-tPACEb0tL8/mathsat -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 11:02:19,469 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a381edf-ab01-41b6-92bc-f9af652b83c9/bin/uautomizer-tPACEb0tL8/mathsat -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 11:02:20,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:02:20,074 INFO L263 TraceCheckSpWp]: Trace formula consists of 365 conjuncts, 76 conjunts are in the unsatisfiable core [2022-11-16 11:02:20,079 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:02:20,859 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-11-16 11:02:20,859 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 24 treesize of output 37 [2022-11-16 11:02:21,981 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-16 11:02:22,328 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-11-16 11:02:23,092 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-16 11:02:23,142 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18 [2022-11-16 11:02:23,795 INFO L321 Elim1Store]: treesize reduction 92, result has 31.3 percent of original size [2022-11-16 11:02:23,795 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 7 case distinctions, treesize of input 35 treesize of output 65 [2022-11-16 11:02:24,474 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:02:24,480 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:02:24,523 INFO L321 Elim1Store]: treesize reduction 6, result has 57.1 percent of original size [2022-11-16 11:02:24,524 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 1 case distinctions, treesize of input 31 treesize of output 27 [2022-11-16 11:02:26,065 INFO L321 Elim1Store]: treesize reduction 40, result has 42.0 percent of original size [2022-11-16 11:02:26,066 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 4 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 6 case distinctions, treesize of input 36 treesize of output 50 [2022-11-16 11:02:27,598 INFO L321 Elim1Store]: treesize reduction 23, result has 17.9 percent of original size [2022-11-16 11:02:27,599 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 54 treesize of output 52 [2022-11-16 11:02:27,711 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-16 11:02:28,445 INFO L321 Elim1Store]: treesize reduction 23, result has 17.9 percent of original size [2022-11-16 11:02:28,445 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 54 treesize of output 52 [2022-11-16 11:02:28,464 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-16 11:02:29,722 INFO L321 Elim1Store]: treesize reduction 32, result has 31.9 percent of original size [2022-11-16 11:02:29,723 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 46 treesize of output 50 [2022-11-16 11:02:29,800 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 20 [2022-11-16 11:02:29,971 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-16 11:02:29,971 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 20 [2022-11-16 11:02:30,002 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-11-16 11:02:30,475 INFO L321 Elim1Store]: treesize reduction 32, result has 31.9 percent of original size [2022-11-16 11:02:30,476 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 46 treesize of output 50 [2022-11-16 11:02:30,494 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 20 [2022-11-16 11:02:30,798 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-16 11:02:30,798 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 20 [2022-11-16 11:02:30,831 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-11-16 11:02:31,317 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-16 11:02:31,317 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 20 [2022-11-16 11:02:31,341 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-11-16 11:02:31,585 INFO L321 Elim1Store]: treesize reduction 32, result has 31.9 percent of original size [2022-11-16 11:02:31,585 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 46 treesize of output 50 [2022-11-16 11:02:31,669 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 20 [2022-11-16 11:02:32,118 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:02:32,186 INFO L321 Elim1Store]: treesize reduction 23, result has 17.9 percent of original size [2022-11-16 11:02:32,186 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 46 treesize of output 46 [2022-11-16 11:02:32,232 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:02:32,233 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-16 11:02:33,802 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-11-16 11:02:34,833 INFO L321 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2022-11-16 11:02:34,833 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 54 treesize of output 25 [2022-11-16 11:02:35,502 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 11:02:35,502 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 11:02:35,502 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 11:02:35,502 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [668532456] [2022-11-16 11:02:35,502 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [668532456] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:02:35,502 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:02:35,502 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26 [2022-11-16 11:02:35,502 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1841741430] [2022-11-16 11:02:35,503 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:02:35,507 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-11-16 11:02:35,507 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 11:02:35,507 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-11-16 11:02:35,508 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=681, Unknown=0, NotChecked=0, Total=756 [2022-11-16 11:02:35,508 INFO L87 Difference]: Start difference. First operand 422 states and 518 transitions. Second operand has 28 states, 24 states have (on average 2.2083333333333335) internal successors, (53), 21 states have internal predecessors, (53), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-16 11:02:41,643 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:02:41,643 INFO L93 Difference]: Finished difference Result 434 states and 530 transitions. [2022-11-16 11:02:41,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-11-16 11:02:41,644 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 24 states have (on average 2.2083333333333335) internal successors, (53), 21 states have internal predecessors, (53), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 60 [2022-11-16 11:02:41,644 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:02:41,645 INFO L225 Difference]: With dead ends: 434 [2022-11-16 11:02:41,645 INFO L226 Difference]: Without dead ends: 434 [2022-11-16 11:02:41,645 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 30 SyntacticMatches, 3 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 271 ImplicationChecksByTransitivity, 10.5s TimeCoverageRelationStatistics Valid=133, Invalid=1273, Unknown=0, NotChecked=0, Total=1406 [2022-11-16 11:02:41,646 INFO L413 NwaCegarLoop]: 154 mSDtfsCounter, 41 mSDsluCounter, 2070 mSDsCounter, 0 mSdLazyCounter, 427 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 2224 SdHoareTripleChecker+Invalid, 1111 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 427 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 676 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2022-11-16 11:02:41,646 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [41 Valid, 2224 Invalid, 1111 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 427 Invalid, 0 Unknown, 676 Unchecked, 2.9s Time] [2022-11-16 11:02:41,646 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 434 states. [2022-11-16 11:02:41,651 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 434 to 428. [2022-11-16 11:02:41,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 428 states, 341 states have (on average 1.404692082111437) internal successors, (479), 392 states have internal predecessors, (479), 20 states have call successors, (20), 17 states have call predecessors, (20), 19 states have return successors, (25), 18 states have call predecessors, (25), 20 states have call successors, (25) [2022-11-16 11:02:41,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 428 states to 428 states and 524 transitions. [2022-11-16 11:02:41,652 INFO L78 Accepts]: Start accepts. Automaton has 428 states and 524 transitions. Word has length 60 [2022-11-16 11:02:41,652 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:02:41,652 INFO L495 AbstractCegarLoop]: Abstraction has 428 states and 524 transitions. [2022-11-16 11:02:41,653 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 24 states have (on average 2.2083333333333335) internal successors, (53), 21 states have internal predecessors, (53), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-16 11:02:41,653 INFO L276 IsEmpty]: Start isEmpty. Operand 428 states and 524 transitions. [2022-11-16 11:02:41,653 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2022-11-16 11:02:41,653 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:02:41,653 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:02:41,670 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a381edf-ab01-41b6-92bc-f9af652b83c9/bin/uautomizer-tPACEb0tL8/mathsat -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 11:02:41,854 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 51 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a381edf-ab01-41b6-92bc-f9af652b83c9/bin/uautomizer-tPACEb0tL8/mathsat -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 11:02:41,854 INFO L420 AbstractCegarLoop]: === Iteration 50 === Targeting free_reportsErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [free_reportsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 73 more)] === [2022-11-16 11:02:41,854 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:02:41,854 INFO L85 PathProgramCache]: Analyzing trace with hash 356199652, now seen corresponding path program 1 times [2022-11-16 11:02:41,855 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 11:02:41,855 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2102132443] [2022-11-16 11:02:41,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:02:41,855 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 11:02:41,855 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a381edf-ab01-41b6-92bc-f9af652b83c9/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 11:02:41,856 INFO L229 MonitoredProcess]: Starting monitored process 52 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a381edf-ab01-41b6-92bc-f9af652b83c9/bin/uautomizer-tPACEb0tL8/mathsat -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 11:02:41,857 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a381edf-ab01-41b6-92bc-f9af652b83c9/bin/uautomizer-tPACEb0tL8/mathsat -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 11:02:42,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:02:42,535 INFO L263 TraceCheckSpWp]: Trace formula consists of 365 conjuncts, 92 conjunts are in the unsatisfiable core [2022-11-16 11:02:42,542 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:02:43,050 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-16 11:02:43,492 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-11-16 11:02:43,492 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 19 treesize of output 27 [2022-11-16 11:02:44,586 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-16 11:02:44,691 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-16 11:02:45,016 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-11-16 11:02:45,055 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-11-16 11:02:46,019 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18 [2022-11-16 11:02:46,087 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2022-11-16 11:02:46,516 INFO L321 Elim1Store]: treesize reduction 19, result has 47.2 percent of original size [2022-11-16 11:02:46,516 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 26 [2022-11-16 11:02:46,877 INFO L321 Elim1Store]: treesize reduction 56, result has 35.6 percent of original size [2022-11-16 11:02:46,877 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 30 treesize of output 51 [2022-11-16 11:02:47,536 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:02:47,537 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 16 [2022-11-16 11:02:47,555 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 3 [2022-11-16 11:02:49,288 INFO L321 Elim1Store]: treesize reduction 28, result has 37.8 percent of original size [2022-11-16 11:02:49,288 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 31 treesize of output 35 [2022-11-16 11:02:49,380 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 7 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2022-11-16 11:02:51,117 INFO L321 Elim1Store]: treesize reduction 23, result has 17.9 percent of original size [2022-11-16 11:02:51,117 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 74 treesize of output 68 [2022-11-16 11:02:51,189 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 7 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 30 [2022-11-16 11:02:52,128 INFO L321 Elim1Store]: treesize reduction 23, result has 17.9 percent of original size [2022-11-16 11:02:52,129 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 74 treesize of output 68 [2022-11-16 11:02:52,150 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 7 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 30 [2022-11-16 11:02:53,695 INFO L321 Elim1Store]: treesize reduction 32, result has 31.9 percent of original size [2022-11-16 11:02:53,696 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 66 treesize of output 66 [2022-11-16 11:02:53,828 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-16 11:02:53,828 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 32 [2022-11-16 11:02:53,943 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 32 [2022-11-16 11:02:54,066 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-11-16 11:02:54,589 INFO L321 Elim1Store]: treesize reduction 32, result has 31.9 percent of original size [2022-11-16 11:02:54,589 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 66 treesize of output 66 [2022-11-16 11:02:54,720 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-16 11:02:54,720 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 32 [2022-11-16 11:02:54,748 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-11-16 11:02:54,882 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 32 [2022-11-16 11:02:55,681 INFO L321 Elim1Store]: treesize reduction 32, result has 31.9 percent of original size [2022-11-16 11:02:55,682 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 66 treesize of output 66 [2022-11-16 11:02:55,819 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-16 11:02:55,819 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 32 [2022-11-16 11:02:55,939 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 32 [2022-11-16 11:02:56,058 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-11-16 11:02:56,572 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:02:56,646 INFO L321 Elim1Store]: treesize reduction 23, result has 17.9 percent of original size [2022-11-16 11:02:56,646 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 66 treesize of output 62 [2022-11-16 11:02:56,743 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:02:56,744 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 30 [2022-11-16 11:03:00,306 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 11:03:00,354 INFO L321 Elim1Store]: treesize reduction 31, result has 8.8 percent of original size [2022-11-16 11:03:00,355 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 86 treesize of output 46 [2022-11-16 11:03:00,428 INFO L321 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2022-11-16 11:03:00,429 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 18 [2022-11-16 11:03:01,232 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 11:03:01,232 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 11:03:01,232 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 11:03:01,233 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2102132443] [2022-11-16 11:03:01,233 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2102132443] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:03:01,233 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:03:01,233 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [27] imperfect sequences [] total 27 [2022-11-16 11:03:01,233 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [568855250] [2022-11-16 11:03:01,233 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:03:01,234 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2022-11-16 11:03:01,234 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 11:03:01,234 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2022-11-16 11:03:01,235 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=734, Unknown=0, NotChecked=0, Total=812 [2022-11-16 11:03:01,235 INFO L87 Difference]: Start difference. First operand 428 states and 524 transitions. Second operand has 29 states, 25 states have (on average 2.12) internal successors, (53), 21 states have internal predecessors, (53), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-16 11:03:07,177 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:03:07,178 INFO L93 Difference]: Finished difference Result 434 states and 528 transitions. [2022-11-16 11:03:07,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-11-16 11:03:07,178 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 25 states have (on average 2.12) internal successors, (53), 21 states have internal predecessors, (53), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 60 [2022-11-16 11:03:07,179 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:03:07,181 INFO L225 Difference]: With dead ends: 434 [2022-11-16 11:03:07,181 INFO L226 Difference]: Without dead ends: 434 [2022-11-16 11:03:07,181 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 29 SyntacticMatches, 3 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 326 ImplicationChecksByTransitivity, 11.5s TimeCoverageRelationStatistics Valid=139, Invalid=1421, Unknown=0, NotChecked=0, Total=1560 [2022-11-16 11:03:07,182 INFO L413 NwaCegarLoop]: 152 mSDtfsCounter, 54 mSDsluCounter, 1502 mSDsCounter, 0 mSdLazyCounter, 371 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 54 SdHoareTripleChecker+Valid, 1654 SdHoareTripleChecker+Invalid, 1152 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 371 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 774 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2022-11-16 11:03:07,182 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [54 Valid, 1654 Invalid, 1152 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 371 Invalid, 0 Unknown, 774 Unchecked, 2.8s Time] [2022-11-16 11:03:07,183 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 434 states. [2022-11-16 11:03:07,188 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 434 to 428. [2022-11-16 11:03:07,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 428 states, 341 states have (on average 1.3988269794721409) internal successors, (477), 392 states have internal predecessors, (477), 20 states have call successors, (20), 17 states have call predecessors, (20), 19 states have return successors, (25), 18 states have call predecessors, (25), 20 states have call successors, (25) [2022-11-16 11:03:07,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 428 states to 428 states and 522 transitions. [2022-11-16 11:03:07,189 INFO L78 Accepts]: Start accepts. Automaton has 428 states and 522 transitions. Word has length 60 [2022-11-16 11:03:07,195 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:03:07,196 INFO L495 AbstractCegarLoop]: Abstraction has 428 states and 522 transitions. [2022-11-16 11:03:07,196 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 25 states have (on average 2.12) internal successors, (53), 21 states have internal predecessors, (53), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-16 11:03:07,196 INFO L276 IsEmpty]: Start isEmpty. Operand 428 states and 522 transitions. [2022-11-16 11:03:07,197 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2022-11-16 11:03:07,197 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:03:07,197 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:03:07,209 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a381edf-ab01-41b6-92bc-f9af652b83c9/bin/uautomizer-tPACEb0tL8/mathsat -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)] Ended with exit code 0 [2022-11-16 11:03:07,399 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 52 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a381edf-ab01-41b6-92bc-f9af652b83c9/bin/uautomizer-tPACEb0tL8/mathsat -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 11:03:07,399 INFO L420 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr46ASSERT_VIOLATIONMEMORY_LEAK === [free_reportsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 73 more)] === [2022-11-16 11:03:07,399 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:03:07,399 INFO L85 PathProgramCache]: Analyzing trace with hash -1235785907, now seen corresponding path program 1 times [2022-11-16 11:03:07,400 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 11:03:07,400 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1605275110] [2022-11-16 11:03:07,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:03:07,400 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 11:03:07,400 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a381edf-ab01-41b6-92bc-f9af652b83c9/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 11:03:07,401 INFO L229 MonitoredProcess]: Starting monitored process 53 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a381edf-ab01-41b6-92bc-f9af652b83c9/bin/uautomizer-tPACEb0tL8/mathsat -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 11:03:07,403 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a381edf-ab01-41b6-92bc-f9af652b83c9/bin/uautomizer-tPACEb0tL8/mathsat -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 11:03:07,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:03:07,875 INFO L263 TraceCheckSpWp]: Trace formula consists of 270 conjuncts, 51 conjunts are in the unsatisfiable core [2022-11-16 11:03:07,879 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:03:09,139 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 11 [2022-11-16 11:03:09,656 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-16 11:03:10,206 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:03:10,289 INFO L321 Elim1Store]: treesize reduction 15, result has 48.3 percent of original size [2022-11-16 11:03:10,289 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 47 treesize of output 51 [2022-11-16 11:03:12,106 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-11-16 11:03:12,106 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 73 treesize of output 67 [2022-11-16 11:03:12,667 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-11-16 11:03:12,667 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 73 treesize of output 67 [2022-11-16 11:03:19,103 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 77 treesize of output 53 [2022-11-16 11:03:22,638 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 11:03:22,638 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 11:03:22,638 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 11:03:22,638 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1605275110] [2022-11-16 11:03:22,638 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1605275110] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:03:22,639 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:03:22,639 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-11-16 11:03:22,639 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [534209656] [2022-11-16 11:03:22,639 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:03:22,639 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-11-16 11:03:22,639 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 11:03:22,640 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-11-16 11:03:22,640 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=367, Unknown=2, NotChecked=0, Total=420 [2022-11-16 11:03:22,640 INFO L87 Difference]: Start difference. First operand 428 states and 522 transitions. Second operand has 21 states, 18 states have (on average 2.888888888888889) internal successors, (52), 17 states have internal predecessors, (52), 4 states have call successors, (4), 4 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-11-16 11:03:29,642 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:03:29,643 INFO L93 Difference]: Finished difference Result 435 states and 528 transitions. [2022-11-16 11:03:29,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-11-16 11:03:29,644 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 18 states have (on average 2.888888888888889) internal successors, (52), 17 states have internal predecessors, (52), 4 states have call successors, (4), 4 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Word has length 60 [2022-11-16 11:03:29,644 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:03:29,646 INFO L225 Difference]: With dead ends: 435 [2022-11-16 11:03:29,646 INFO L226 Difference]: Without dead ends: 407 [2022-11-16 11:03:29,646 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 39 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 111 ImplicationChecksByTransitivity, 14.5s TimeCoverageRelationStatistics Valid=80, Invalid=565, Unknown=5, NotChecked=0, Total=650 [2022-11-16 11:03:29,647 INFO L413 NwaCegarLoop]: 135 mSDtfsCounter, 35 mSDsluCounter, 1103 mSDsCounter, 0 mSdLazyCounter, 229 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 1238 SdHoareTripleChecker+Invalid, 957 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 229 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 714 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-11-16 11:03:29,647 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 1238 Invalid, 957 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 229 Invalid, 0 Unknown, 714 Unchecked, 1.8s Time] [2022-11-16 11:03:29,648 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 407 states. [2022-11-16 11:03:29,653 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 407 to 405. [2022-11-16 11:03:29,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 405 states, 320 states have (on average 1.41875) internal successors, (454), 371 states have internal predecessors, (454), 19 states have call successors, (19), 16 states have call predecessors, (19), 18 states have return successors, (24), 17 states have call predecessors, (24), 19 states have call successors, (24) [2022-11-16 11:03:29,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 405 states to 405 states and 497 transitions. [2022-11-16 11:03:29,655 INFO L78 Accepts]: Start accepts. Automaton has 405 states and 497 transitions. Word has length 60 [2022-11-16 11:03:29,656 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:03:29,656 INFO L495 AbstractCegarLoop]: Abstraction has 405 states and 497 transitions. [2022-11-16 11:03:29,656 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 18 states have (on average 2.888888888888889) internal successors, (52), 17 states have internal predecessors, (52), 4 states have call successors, (4), 4 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-11-16 11:03:29,656 INFO L276 IsEmpty]: Start isEmpty. Operand 405 states and 497 transitions. [2022-11-16 11:03:29,657 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-11-16 11:03:29,657 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:03:29,657 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:03:29,675 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a381edf-ab01-41b6-92bc-f9af652b83c9/bin/uautomizer-tPACEb0tL8/mathsat -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 11:03:29,870 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 53 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a381edf-ab01-41b6-92bc-f9af652b83c9/bin/uautomizer-tPACEb0tL8/mathsat -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 11:03:29,871 INFO L420 AbstractCegarLoop]: === Iteration 52 === Targeting __ldv_list_addErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [free_reportsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 73 more)] === [2022-11-16 11:03:29,871 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:03:29,871 INFO L85 PathProgramCache]: Analyzing trace with hash -208932648, now seen corresponding path program 1 times [2022-11-16 11:03:29,871 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 11:03:29,871 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [466209647] [2022-11-16 11:03:29,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:03:29,872 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 11:03:29,872 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a381edf-ab01-41b6-92bc-f9af652b83c9/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 11:03:29,872 INFO L229 MonitoredProcess]: Starting monitored process 54 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a381edf-ab01-41b6-92bc-f9af652b83c9/bin/uautomizer-tPACEb0tL8/mathsat -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 11:03:29,873 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a381edf-ab01-41b6-92bc-f9af652b83c9/bin/uautomizer-tPACEb0tL8/mathsat -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 11:03:30,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:03:30,278 INFO L263 TraceCheckSpWp]: Trace formula consists of 401 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-16 11:03:30,279 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:03:30,490 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 11:03:30,491 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 11:03:30,491 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 11:03:30,491 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [466209647] [2022-11-16 11:03:30,491 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [466209647] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:03:30,491 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:03:30,491 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 11:03:30,491 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [47559160] [2022-11-16 11:03:30,491 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:03:30,492 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 11:03:30,492 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 11:03:30,492 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 11:03:30,492 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-16 11:03:30,492 INFO L87 Difference]: Start difference. First operand 405 states and 497 transitions. Second operand has 6 states, 5 states have (on average 10.0) internal successors, (50), 5 states have internal predecessors, (50), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2022-11-16 11:03:33,434 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:03:33,435 INFO L93 Difference]: Finished difference Result 527 states and 629 transitions. [2022-11-16 11:03:33,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-16 11:03:33,435 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 10.0) internal successors, (50), 5 states have internal predecessors, (50), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 62 [2022-11-16 11:03:33,435 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:03:33,436 INFO L225 Difference]: With dead ends: 527 [2022-11-16 11:03:33,436 INFO L226 Difference]: Without dead ends: 527 [2022-11-16 11:03:33,437 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-16 11:03:33,437 INFO L413 NwaCegarLoop]: 214 mSDtfsCounter, 152 mSDsluCounter, 565 mSDsCounter, 0 mSdLazyCounter, 366 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 152 SdHoareTripleChecker+Valid, 779 SdHoareTripleChecker+Invalid, 369 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 366 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2022-11-16 11:03:33,437 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [152 Valid, 779 Invalid, 369 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 366 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2022-11-16 11:03:33,438 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 527 states. [2022-11-16 11:03:33,444 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 527 to 404. [2022-11-16 11:03:33,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 404 states, 320 states have (on average 1.415625) internal successors, (453), 370 states have internal predecessors, (453), 19 states have call successors, (19), 16 states have call predecessors, (19), 18 states have return successors, (24), 17 states have call predecessors, (24), 19 states have call successors, (24) [2022-11-16 11:03:33,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 404 states to 404 states and 496 transitions. [2022-11-16 11:03:33,445 INFO L78 Accepts]: Start accepts. Automaton has 404 states and 496 transitions. Word has length 62 [2022-11-16 11:03:33,446 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:03:33,446 INFO L495 AbstractCegarLoop]: Abstraction has 404 states and 496 transitions. [2022-11-16 11:03:33,446 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 10.0) internal successors, (50), 5 states have internal predecessors, (50), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2022-11-16 11:03:33,446 INFO L276 IsEmpty]: Start isEmpty. Operand 404 states and 496 transitions. [2022-11-16 11:03:33,447 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-11-16 11:03:33,447 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:03:33,447 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:03:33,462 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a381edf-ab01-41b6-92bc-f9af652b83c9/bin/uautomizer-tPACEb0tL8/mathsat -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)] Forceful destruction successful, exit code 0 [2022-11-16 11:03:33,661 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 54 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a381edf-ab01-41b6-92bc-f9af652b83c9/bin/uautomizer-tPACEb0tL8/mathsat -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 11:03:33,662 INFO L420 AbstractCegarLoop]: === Iteration 53 === Targeting __ldv_list_addErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [free_reportsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 73 more)] === [2022-11-16 11:03:33,662 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:03:33,662 INFO L85 PathProgramCache]: Analyzing trace with hash -208932647, now seen corresponding path program 1 times [2022-11-16 11:03:33,662 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 11:03:33,662 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1849073049] [2022-11-16 11:03:33,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:03:33,663 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 11:03:33,663 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a381edf-ab01-41b6-92bc-f9af652b83c9/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 11:03:33,663 INFO L229 MonitoredProcess]: Starting monitored process 55 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a381edf-ab01-41b6-92bc-f9af652b83c9/bin/uautomizer-tPACEb0tL8/mathsat -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 11:03:33,665 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a381edf-ab01-41b6-92bc-f9af652b83c9/bin/uautomizer-tPACEb0tL8/mathsat -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 11:03:34,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:03:34,158 INFO L263 TraceCheckSpWp]: Trace formula consists of 401 conjuncts, 13 conjunts are in the unsatisfiable core [2022-11-16 11:03:34,160 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:03:35,357 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 11:03:35,357 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 11:03:35,357 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 11:03:35,357 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1849073049] [2022-11-16 11:03:35,357 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1849073049] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:03:35,357 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:03:35,357 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-16 11:03:35,357 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1536605091] [2022-11-16 11:03:35,357 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:03:35,358 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-16 11:03:35,358 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 11:03:35,358 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-16 11:03:35,358 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-11-16 11:03:35,358 INFO L87 Difference]: Start difference. First operand 404 states and 496 transitions. Second operand has 8 states, 6 states have (on average 8.333333333333334) internal successors, (50), 7 states have internal predecessors, (50), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-11-16 11:03:35,512 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:03:35,512 INFO L93 Difference]: Finished difference Result 499 states and 601 transitions. [2022-11-16 11:03:35,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-16 11:03:35,513 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 6 states have (on average 8.333333333333334) internal successors, (50), 7 states have internal predecessors, (50), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 62 [2022-11-16 11:03:35,513 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:03:35,514 INFO L225 Difference]: With dead ends: 499 [2022-11-16 11:03:35,514 INFO L226 Difference]: Without dead ends: 499 [2022-11-16 11:03:35,514 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 55 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2022-11-16 11:03:35,514 INFO L413 NwaCegarLoop]: 210 mSDtfsCounter, 71 mSDsluCounter, 770 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 73 SdHoareTripleChecker+Valid, 980 SdHoareTripleChecker+Invalid, 283 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 276 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-16 11:03:35,514 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [73 Valid, 980 Invalid, 283 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 276 Unchecked, 0.1s Time] [2022-11-16 11:03:35,515 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 499 states. [2022-11-16 11:03:35,520 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 499 to 403. [2022-11-16 11:03:35,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 403 states, 320 states have (on average 1.4125) internal successors, (452), 369 states have internal predecessors, (452), 19 states have call successors, (19), 16 states have call predecessors, (19), 18 states have return successors, (24), 17 states have call predecessors, (24), 19 states have call successors, (24) [2022-11-16 11:03:35,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 403 states to 403 states and 495 transitions. [2022-11-16 11:03:35,522 INFO L78 Accepts]: Start accepts. Automaton has 403 states and 495 transitions. Word has length 62 [2022-11-16 11:03:35,522 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:03:35,522 INFO L495 AbstractCegarLoop]: Abstraction has 403 states and 495 transitions. [2022-11-16 11:03:35,522 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 6 states have (on average 8.333333333333334) internal successors, (50), 7 states have internal predecessors, (50), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-11-16 11:03:35,522 INFO L276 IsEmpty]: Start isEmpty. Operand 403 states and 495 transitions. [2022-11-16 11:03:35,523 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-11-16 11:03:35,523 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:03:35,523 INFO L195 NwaCegarLoop]: trace histogram [2, 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, 1, 1, 1, 1, 1, 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 11:03:35,539 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a381edf-ab01-41b6-92bc-f9af652b83c9/bin/uautomizer-tPACEb0tL8/mathsat -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)] Forceful destruction successful, exit code 0 [2022-11-16 11:03:35,737 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 55 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a381edf-ab01-41b6-92bc-f9af652b83c9/bin/uautomizer-tPACEb0tL8/mathsat -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 11:03:35,737 INFO L420 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [free_reportsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 73 more)] === [2022-11-16 11:03:35,738 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:03:35,738 INFO L85 PathProgramCache]: Analyzing trace with hash -1629935160, now seen corresponding path program 1 times [2022-11-16 11:03:35,738 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 11:03:35,738 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1151035661] [2022-11-16 11:03:35,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:03:35,738 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 11:03:35,738 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a381edf-ab01-41b6-92bc-f9af652b83c9/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 11:03:35,739 INFO L229 MonitoredProcess]: Starting monitored process 56 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a381edf-ab01-41b6-92bc-f9af652b83c9/bin/uautomizer-tPACEb0tL8/mathsat -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 11:03:35,742 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a381edf-ab01-41b6-92bc-f9af652b83c9/bin/uautomizer-tPACEb0tL8/mathsat -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 11:03:36,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:03:36,143 INFO L263 TraceCheckSpWp]: Trace formula consists of 369 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-16 11:03:36,144 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:03:36,361 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-16 11:03:36,361 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 11:03:36,361 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 11:03:36,362 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1151035661] [2022-11-16 11:03:36,362 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1151035661] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:03:36,362 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:03:36,362 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-16 11:03:36,362 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1086616285] [2022-11-16 11:03:36,362 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:03:36,362 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 11:03:36,362 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 11:03:36,363 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 11:03:36,363 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-16 11:03:36,363 INFO L87 Difference]: Start difference. First operand 403 states and 495 transitions. Second operand has 6 states, 6 states have (on average 9.0) internal successors, (54), 5 states have internal predecessors, (54), 1 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2022-11-16 11:03:36,619 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:03:36,619 INFO L93 Difference]: Finished difference Result 477 states and 576 transitions. [2022-11-16 11:03:36,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-16 11:03:36,620 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.0) internal successors, (54), 5 states have internal predecessors, (54), 1 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) Word has length 62 [2022-11-16 11:03:36,621 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:03:36,622 INFO L225 Difference]: With dead ends: 477 [2022-11-16 11:03:36,622 INFO L226 Difference]: Without dead ends: 477 [2022-11-16 11:03:36,623 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-16 11:03:36,623 INFO L413 NwaCegarLoop]: 230 mSDtfsCounter, 73 mSDsluCounter, 849 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 76 SdHoareTripleChecker+Valid, 1079 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-16 11:03:36,623 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [76 Valid, 1079 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-16 11:03:36,624 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 477 states. [2022-11-16 11:03:36,629 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 477 to 403. [2022-11-16 11:03:36,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 403 states, 320 states have (on average 1.40625) internal successors, (450), 369 states have internal predecessors, (450), 19 states have call successors, (19), 16 states have call predecessors, (19), 18 states have return successors, (24), 17 states have call predecessors, (24), 19 states have call successors, (24) [2022-11-16 11:03:36,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 403 states to 403 states and 493 transitions. [2022-11-16 11:03:36,631 INFO L78 Accepts]: Start accepts. Automaton has 403 states and 493 transitions. Word has length 62 [2022-11-16 11:03:36,631 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:03:36,631 INFO L495 AbstractCegarLoop]: Abstraction has 403 states and 493 transitions. [2022-11-16 11:03:36,632 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.0) internal successors, (54), 5 states have internal predecessors, (54), 1 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2022-11-16 11:03:36,632 INFO L276 IsEmpty]: Start isEmpty. Operand 403 states and 493 transitions. [2022-11-16 11:03:36,632 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-11-16 11:03:36,632 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:03:36,633 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:03:36,648 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a381edf-ab01-41b6-92bc-f9af652b83c9/bin/uautomizer-tPACEb0tL8/mathsat -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 11:03:36,847 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 56 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a381edf-ab01-41b6-92bc-f9af652b83c9/bin/uautomizer-tPACEb0tL8/mathsat -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 11:03:36,848 INFO L420 AbstractCegarLoop]: === Iteration 55 === Targeting __ldv_list_addErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [free_reportsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 73 more)] === [2022-11-16 11:03:36,848 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:03:36,848 INFO L85 PathProgramCache]: Analyzing trace with hash 2113022537, now seen corresponding path program 1 times [2022-11-16 11:03:36,848 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 11:03:36,848 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [215582127] [2022-11-16 11:03:36,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:03:36,849 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 11:03:36,849 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a381edf-ab01-41b6-92bc-f9af652b83c9/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 11:03:36,849 INFO L229 MonitoredProcess]: Starting monitored process 57 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a381edf-ab01-41b6-92bc-f9af652b83c9/bin/uautomizer-tPACEb0tL8/mathsat -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 11:03:36,850 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a381edf-ab01-41b6-92bc-f9af652b83c9/bin/uautomizer-tPACEb0tL8/mathsat -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 11:03:37,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:03:37,274 INFO L263 TraceCheckSpWp]: Trace formula consists of 414 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-16 11:03:37,276 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:03:37,301 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 6 treesize of output 7 [2022-11-16 11:03:37,835 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-16 11:03:37,835 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 11:03:37,835 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 11:03:37,835 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [215582127] [2022-11-16 11:03:37,835 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [215582127] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:03:37,836 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:03:37,836 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-16 11:03:37,836 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1779846446] [2022-11-16 11:03:37,836 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:03:37,836 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-16 11:03:37,836 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 11:03:37,837 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-16 11:03:37,837 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-11-16 11:03:37,837 INFO L87 Difference]: Start difference. First operand 403 states and 493 transitions. Second operand has 9 states, 8 states have (on average 6.75) internal successors, (54), 7 states have internal predecessors, (54), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2022-11-16 11:03:42,331 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:03:42,331 INFO L93 Difference]: Finished difference Result 439 states and 530 transitions. [2022-11-16 11:03:42,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-16 11:03:42,332 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 6.75) internal successors, (54), 7 states have internal predecessors, (54), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) Word has length 63 [2022-11-16 11:03:42,332 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:03:42,334 INFO L225 Difference]: With dead ends: 439 [2022-11-16 11:03:42,334 INFO L226 Difference]: Without dead ends: 439 [2022-11-16 11:03:42,334 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2022-11-16 11:03:42,334 INFO L413 NwaCegarLoop]: 186 mSDtfsCounter, 136 mSDsluCounter, 867 mSDsCounter, 0 mSdLazyCounter, 595 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 136 SdHoareTripleChecker+Valid, 1053 SdHoareTripleChecker+Invalid, 598 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 595 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.2s IncrementalHoareTripleChecker+Time [2022-11-16 11:03:42,335 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [136 Valid, 1053 Invalid, 598 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 595 Invalid, 0 Unknown, 0 Unchecked, 4.2s Time] [2022-11-16 11:03:42,335 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 439 states. [2022-11-16 11:03:42,340 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 439 to 401. [2022-11-16 11:03:42,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 401 states, 320 states have (on average 1.4) internal successors, (448), 367 states have internal predecessors, (448), 19 states have call successors, (19), 16 states have call predecessors, (19), 18 states have return successors, (24), 17 states have call predecessors, (24), 19 states have call successors, (24) [2022-11-16 11:03:42,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 401 states to 401 states and 491 transitions. [2022-11-16 11:03:42,341 INFO L78 Accepts]: Start accepts. Automaton has 401 states and 491 transitions. Word has length 63 [2022-11-16 11:03:42,341 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:03:42,341 INFO L495 AbstractCegarLoop]: Abstraction has 401 states and 491 transitions. [2022-11-16 11:03:42,341 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 6.75) internal successors, (54), 7 states have internal predecessors, (54), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2022-11-16 11:03:42,342 INFO L276 IsEmpty]: Start isEmpty. Operand 401 states and 491 transitions. [2022-11-16 11:03:42,342 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-11-16 11:03:42,342 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:03:42,343 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:03:42,357 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a381edf-ab01-41b6-92bc-f9af652b83c9/bin/uautomizer-tPACEb0tL8/mathsat -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)] Ended with exit code 0 [2022-11-16 11:03:42,557 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 57 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a381edf-ab01-41b6-92bc-f9af652b83c9/bin/uautomizer-tPACEb0tL8/mathsat -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 11:03:42,557 INFO L420 AbstractCegarLoop]: === Iteration 56 === Targeting __ldv_list_addErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [free_reportsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 73 more)] === [2022-11-16 11:03:42,558 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:03:42,558 INFO L85 PathProgramCache]: Analyzing trace with hash 2113022538, now seen corresponding path program 1 times [2022-11-16 11:03:42,558 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 11:03:42,558 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1769712636] [2022-11-16 11:03:42,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:03:42,558 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 11:03:42,559 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a381edf-ab01-41b6-92bc-f9af652b83c9/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 11:03:42,559 INFO L229 MonitoredProcess]: Starting monitored process 58 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a381edf-ab01-41b6-92bc-f9af652b83c9/bin/uautomizer-tPACEb0tL8/mathsat -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 11:03:42,560 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a381edf-ab01-41b6-92bc-f9af652b83c9/bin/uautomizer-tPACEb0tL8/mathsat -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 11:03:42,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:03:43,002 INFO L263 TraceCheckSpWp]: Trace formula consists of 414 conjuncts, 20 conjunts are in the unsatisfiable core [2022-11-16 11:03:43,004 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:03:43,018 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 11:03:43,882 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-16 11:03:43,882 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 11:03:43,882 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 11:03:43,883 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1769712636] [2022-11-16 11:03:43,883 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1769712636] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:03:43,883 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:03:43,883 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-16 11:03:43,883 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1267982510] [2022-11-16 11:03:43,883 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:03:43,883 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-16 11:03:43,883 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 11:03:43,884 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-16 11:03:43,884 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-11-16 11:03:43,884 INFO L87 Difference]: Start difference. First operand 401 states and 491 transitions. Second operand has 9 states, 8 states have (on average 6.75) internal successors, (54), 7 states have internal predecessors, (54), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2022-11-16 11:03:48,642 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:03:48,642 INFO L93 Difference]: Finished difference Result 516 states and 617 transitions. [2022-11-16 11:03:48,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-16 11:03:48,644 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 6.75) internal successors, (54), 7 states have internal predecessors, (54), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) Word has length 63 [2022-11-16 11:03:48,644 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:03:48,646 INFO L225 Difference]: With dead ends: 516 [2022-11-16 11:03:48,646 INFO L226 Difference]: Without dead ends: 516 [2022-11-16 11:03:48,646 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2022-11-16 11:03:48,646 INFO L413 NwaCegarLoop]: 221 mSDtfsCounter, 220 mSDsluCounter, 1136 mSDsCounter, 0 mSdLazyCounter, 578 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 222 SdHoareTripleChecker+Valid, 1357 SdHoareTripleChecker+Invalid, 585 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 578 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.4s IncrementalHoareTripleChecker+Time [2022-11-16 11:03:48,647 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [222 Valid, 1357 Invalid, 585 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 578 Invalid, 0 Unknown, 0 Unchecked, 4.4s Time] [2022-11-16 11:03:48,647 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 516 states. [2022-11-16 11:03:48,653 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 516 to 399. [2022-11-16 11:03:48,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 399 states, 320 states have (on average 1.39375) internal successors, (446), 365 states have internal predecessors, (446), 19 states have call successors, (19), 16 states have call predecessors, (19), 18 states have return successors, (24), 17 states have call predecessors, (24), 19 states have call successors, (24) [2022-11-16 11:03:48,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 399 states to 399 states and 489 transitions. [2022-11-16 11:03:48,654 INFO L78 Accepts]: Start accepts. Automaton has 399 states and 489 transitions. Word has length 63 [2022-11-16 11:03:48,655 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:03:48,655 INFO L495 AbstractCegarLoop]: Abstraction has 399 states and 489 transitions. [2022-11-16 11:03:48,655 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 6.75) internal successors, (54), 7 states have internal predecessors, (54), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2022-11-16 11:03:48,655 INFO L276 IsEmpty]: Start isEmpty. Operand 399 states and 489 transitions. [2022-11-16 11:03:48,656 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-11-16 11:03:48,656 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:03:48,656 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, 1, 1, 1, 1, 1, 1, 1, 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 11:03:48,675 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a381edf-ab01-41b6-92bc-f9af652b83c9/bin/uautomizer-tPACEb0tL8/mathsat -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 11:03:48,870 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 58 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a381edf-ab01-41b6-92bc-f9af652b83c9/bin/uautomizer-tPACEb0tL8/mathsat -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 11:03:48,871 INFO L420 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr39REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [free_reportsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 73 more)] === [2022-11-16 11:03:48,871 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:03:48,871 INFO L85 PathProgramCache]: Analyzing trace with hash -889933845, now seen corresponding path program 1 times [2022-11-16 11:03:48,871 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 11:03:48,872 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [8042601] [2022-11-16 11:03:48,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:03:48,872 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 11:03:48,872 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a381edf-ab01-41b6-92bc-f9af652b83c9/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 11:03:48,873 INFO L229 MonitoredProcess]: Starting monitored process 59 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a381edf-ab01-41b6-92bc-f9af652b83c9/bin/uautomizer-tPACEb0tL8/mathsat -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 11:03:48,895 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a381edf-ab01-41b6-92bc-f9af652b83c9/bin/uautomizer-tPACEb0tL8/mathsat -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 11:03:49,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:03:49,417 INFO L263 TraceCheckSpWp]: Trace formula consists of 352 conjuncts, 25 conjunts are in the unsatisfiable core [2022-11-16 11:03:49,419 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:03:50,118 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-11-16 11:03:50,118 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 19 treesize of output 27 [2022-11-16 11:03:50,672 INFO L321 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2022-11-16 11:03:50,672 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 24 [2022-11-16 11:03:51,499 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-11-16 11:03:51,499 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 19 treesize of output 27 [2022-11-16 11:03:54,070 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:03:54,178 INFO L321 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2022-11-16 11:03:54,179 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 17 treesize of output 31 [2022-11-16 11:03:54,590 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 11:03:54,590 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 11:03:54,590 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 11:03:54,590 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [8042601] [2022-11-16 11:03:54,590 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [8042601] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:03:54,590 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:03:54,590 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-11-16 11:03:54,590 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [770056431] [2022-11-16 11:03:54,590 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:03:54,591 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-16 11:03:54,591 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 11:03:54,591 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-16 11:03:54,591 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2022-11-16 11:03:54,591 INFO L87 Difference]: Start difference. First operand 399 states and 489 transitions. Second operand has 14 states, 12 states have (on average 4.5) internal successors, (54), 11 states have internal predecessors, (54), 2 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-11-16 11:03:57,338 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:03:57,338 INFO L93 Difference]: Finished difference Result 473 states and 569 transitions. [2022-11-16 11:03:57,339 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-11-16 11:03:57,339 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 12 states have (on average 4.5) internal successors, (54), 11 states have internal predecessors, (54), 2 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 62 [2022-11-16 11:03:57,339 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:03:57,340 INFO L225 Difference]: With dead ends: 473 [2022-11-16 11:03:57,340 INFO L226 Difference]: Without dead ends: 473 [2022-11-16 11:03:57,341 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 48 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=66, Invalid=314, Unknown=0, NotChecked=0, Total=380 [2022-11-16 11:03:57,341 INFO L413 NwaCegarLoop]: 147 mSDtfsCounter, 118 mSDsluCounter, 790 mSDsCounter, 0 mSdLazyCounter, 311 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 118 SdHoareTripleChecker+Valid, 937 SdHoareTripleChecker+Invalid, 731 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 311 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 399 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2022-11-16 11:03:57,341 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [118 Valid, 937 Invalid, 731 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 311 Invalid, 0 Unknown, 399 Unchecked, 2.1s Time] [2022-11-16 11:03:57,342 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 473 states. [2022-11-16 11:03:57,347 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 473 to 429. [2022-11-16 11:03:57,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 429 states, 350 states have (on average 1.3714285714285714) internal successors, (480), 395 states have internal predecessors, (480), 19 states have call successors, (19), 16 states have call predecessors, (19), 18 states have return successors, (24), 17 states have call predecessors, (24), 19 states have call successors, (24) [2022-11-16 11:03:57,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 429 states to 429 states and 523 transitions. [2022-11-16 11:03:57,349 INFO L78 Accepts]: Start accepts. Automaton has 429 states and 523 transitions. Word has length 62 [2022-11-16 11:03:57,349 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:03:57,349 INFO L495 AbstractCegarLoop]: Abstraction has 429 states and 523 transitions. [2022-11-16 11:03:57,349 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 12 states have (on average 4.5) internal successors, (54), 11 states have internal predecessors, (54), 2 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-11-16 11:03:57,349 INFO L276 IsEmpty]: Start isEmpty. Operand 429 states and 523 transitions. [2022-11-16 11:03:57,350 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-11-16 11:03:57,350 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:03:57,350 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:03:57,365 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a381edf-ab01-41b6-92bc-f9af652b83c9/bin/uautomizer-tPACEb0tL8/mathsat -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)] Forceful destruction successful, exit code 0 [2022-11-16 11:03:57,565 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 59 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a381edf-ab01-41b6-92bc-f9af652b83c9/bin/uautomizer-tPACEb0tL8/mathsat -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 11:03:57,565 INFO L420 AbstractCegarLoop]: === Iteration 58 === Targeting __ldv_list_addErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [free_reportsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 73 more)] === [2022-11-16 11:03:57,565 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:03:57,566 INFO L85 PathProgramCache]: Analyzing trace with hash -904871796, now seen corresponding path program 1 times [2022-11-16 11:03:57,566 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 11:03:57,566 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [848742988] [2022-11-16 11:03:57,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:03:57,566 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 11:03:57,566 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a381edf-ab01-41b6-92bc-f9af652b83c9/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 11:03:57,567 INFO L229 MonitoredProcess]: Starting monitored process 60 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a381edf-ab01-41b6-92bc-f9af652b83c9/bin/uautomizer-tPACEb0tL8/mathsat -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 11:03:57,568 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a381edf-ab01-41b6-92bc-f9af652b83c9/bin/uautomizer-tPACEb0tL8/mathsat -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 11:03:58,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:03:58,643 INFO L263 TraceCheckSpWp]: Trace formula consists of 440 conjuncts, 111 conjunts are in the unsatisfiable core [2022-11-16 11:03:58,651 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:03:58,666 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 9 treesize of output 3 [2022-11-16 11:03:59,470 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-11-16 11:03:59,470 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 24 treesize of output 37 [2022-11-16 11:04:00,730 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-16 11:04:01,571 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-16 11:04:01,621 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18 [2022-11-16 11:04:02,310 INFO L321 Elim1Store]: treesize reduction 92, result has 31.3 percent of original size [2022-11-16 11:04:02,311 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 7 case distinctions, treesize of input 35 treesize of output 65 [2022-11-16 11:04:02,947 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:04:02,954 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:04:02,996 INFO L321 Elim1Store]: treesize reduction 6, result has 57.1 percent of original size [2022-11-16 11:04:02,997 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 1 case distinctions, treesize of input 31 treesize of output 27 [2022-11-16 11:04:04,225 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:04:04,439 INFO L321 Elim1Store]: treesize reduction 34, result has 38.2 percent of original size [2022-11-16 11:04:04,440 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 5 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 5 case distinctions, treesize of input 36 treesize of output 42 [2022-11-16 11:04:06,110 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-16 11:04:06,111 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 59 treesize of output 44 [2022-11-16 11:04:06,256 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18 [2022-11-16 11:04:08,223 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:04:08,229 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:04:08,235 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:04:08,241 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:04:08,247 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:04:08,253 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:04:08,259 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:04:08,265 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:04:08,270 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-16 11:04:08,270 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 17 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 83 treesize of output 83 [2022-11-16 11:04:08,374 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 9 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 37 [2022-11-16 11:04:08,471 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:04:08,477 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:04:08,483 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:04:08,489 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:04:08,495 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:04:08,496 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 14 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 43 treesize of output 57 [2022-11-16 11:04:10,269 INFO L321 Elim1Store]: treesize reduction 48, result has 23.8 percent of original size [2022-11-16 11:04:10,269 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 61 treesize of output 66 [2022-11-16 11:04:10,296 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 24 [2022-11-16 11:04:10,457 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:04:10,570 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-16 11:04:10,570 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 30 [2022-11-16 11:04:10,705 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2022-11-16 11:04:11,043 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2022-11-16 11:04:11,256 INFO L321 Elim1Store]: treesize reduction 48, result has 23.8 percent of original size [2022-11-16 11:04:11,257 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 61 treesize of output 66 [2022-11-16 11:04:11,298 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 24 [2022-11-16 11:04:11,450 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:04:11,563 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-16 11:04:11,563 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 30 [2022-11-16 11:04:12,348 INFO L321 Elim1Store]: treesize reduction 19, result has 32.1 percent of original size [2022-11-16 11:04:12,348 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 21 treesize of output 30 [2022-11-16 11:04:12,603 INFO L321 Elim1Store]: treesize reduction 48, result has 23.8 percent of original size [2022-11-16 11:04:12,603 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 61 treesize of output 66 [2022-11-16 11:04:12,641 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 24 [2022-11-16 11:04:12,807 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2022-11-16 11:04:13,429 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2022-11-16 11:04:13,458 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:04:13,464 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:04:13,465 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 6 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 26 [2022-11-16 11:04:13,511 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:04:13,589 INFO L321 Elim1Store]: treesize reduction 39, result has 11.4 percent of original size [2022-11-16 11:04:13,589 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 61 treesize of output 62 [2022-11-16 11:04:15,856 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 8 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 13 [2022-11-16 11:04:17,012 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:04:17,049 INFO L321 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2022-11-16 11:04:17,049 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 1 case distinctions, treesize of input 45 treesize of output 27 [2022-11-16 11:04:20,210 INFO L321 Elim1Store]: treesize reduction 212, result has 10.5 percent of original size [2022-11-16 11:04:20,210 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 6 new quantified variables, introduced 10 case distinctions, treesize of input 80 treesize of output 70 [2022-11-16 11:04:21,320 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-11-16 11:04:21,321 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 5 new quantified variables, introduced 3 case distinctions, treesize of input 97 treesize of output 39 [2022-11-16 11:04:22,693 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:04:22,693 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:04:24,824 INFO L321 Elim1Store]: treesize reduction 7, result has 70.8 percent of original size [2022-11-16 11:04:24,825 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 29 [2022-11-16 11:04:25,609 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 11:04:25,609 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [848742988] [2022-11-16 11:04:25,609 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [848742988] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 11:04:25,609 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1130853222] [2022-11-16 11:04:25,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:04:25,609 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-16 11:04:25,609 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a381edf-ab01-41b6-92bc-f9af652b83c9/bin/uautomizer-tPACEb0tL8/cvc4 [2022-11-16 11:04:25,611 INFO L229 MonitoredProcess]: Starting monitored process 61 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a381edf-ab01-41b6-92bc-f9af652b83c9/bin/uautomizer-tPACEb0tL8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-16 11:04:25,612 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a381edf-ab01-41b6-92bc-f9af652b83c9/bin/uautomizer-tPACEb0tL8/cvc4 --incremental --print-success --lang smt (61)] Waiting until timeout for monitored process [2022-11-16 11:04:27,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:04:27,460 INFO L263 TraceCheckSpWp]: Trace formula consists of 440 conjuncts, 104 conjunts are in the unsatisfiable core [2022-11-16 11:04:27,466 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:04:29,818 INFO L321 Elim1Store]: treesize reduction 12, result has 42.9 percent of original size [2022-11-16 11:04:29,818 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 20 treesize of output 22 [2022-11-16 11:04:32,800 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-16 11:04:34,653 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18 [2022-11-16 11:04:34,759 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-16 11:04:35,550 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:04:35,566 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:04:35,567 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 5 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 36 [2022-11-16 11:04:36,567 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2022-11-16 11:04:39,836 INFO L321 Elim1Store]: treesize reduction 56, result has 35.6 percent of original size [2022-11-16 11:04:39,836 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 30 treesize of output 51 [2022-11-16 11:04:42,439 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18 [2022-11-16 11:04:42,485 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-16 11:04:42,486 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 77 treesize of output 54 [2022-11-16 11:04:44,179 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:04:44,185 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:04:44,191 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:04:44,197 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:04:44,201 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-16 11:04:44,201 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 10 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 43 treesize of output 57 [2022-11-16 11:04:44,274 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:04:44,280 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:04:44,286 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:04:44,292 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:04:44,299 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:04:44,305 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:04:44,311 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:04:44,317 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:04:44,323 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-16 11:04:44,324 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 15 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 101 treesize of output 93 [2022-11-16 11:04:46,081 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:04:46,088 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:04:46,182 INFO L321 Elim1Store]: treesize reduction 39, result has 11.4 percent of original size [2022-11-16 11:04:46,182 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 79 treesize of output 76 [2022-11-16 11:04:46,346 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:04:46,544 INFO L321 Elim1Store]: treesize reduction 20, result has 48.7 percent of original size [2022-11-16 11:04:46,545 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 21 treesize of output 34 [2022-11-16 11:04:46,612 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-11-16 11:04:47,742 INFO L321 Elim1Store]: treesize reduction 20, result has 57.4 percent of original size [2022-11-16 11:04:47,742 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 21 treesize of output 42 [2022-11-16 11:04:47,759 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-11-16 11:04:47,913 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:04:47,919 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:04:48,016 INFO L321 Elim1Store]: treesize reduction 39, result has 11.4 percent of original size [2022-11-16 11:04:48,016 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 79 treesize of output 76 [2022-11-16 11:04:49,485 INFO L321 Elim1Store]: treesize reduction 20, result has 57.4 percent of original size [2022-11-16 11:04:49,485 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 21 treesize of output 42 [2022-11-16 11:04:49,661 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-11-16 11:04:49,689 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-11-16 11:04:49,766 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:04:49,772 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:04:49,869 INFO L321 Elim1Store]: treesize reduction 39, result has 11.4 percent of original size [2022-11-16 11:04:49,869 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 79 treesize of output 76 [2022-11-16 11:04:51,133 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:04:51,139 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:04:51,234 INFO L321 Elim1Store]: treesize reduction 39, result has 11.4 percent of original size [2022-11-16 11:04:51,234 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 79 treesize of output 76 [2022-11-16 11:04:51,300 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:04:51,311 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:04:51,319 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:04:51,320 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 26 [2022-11-16 11:04:56,344 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:04:56,383 INFO L321 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2022-11-16 11:04:56,383 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 1 case distinctions, treesize of input 45 treesize of output 27 [2022-11-16 11:05:00,266 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2022-11-16 11:05:02,679 INFO L321 Elim1Store]: treesize reduction 44, result has 30.2 percent of original size [2022-11-16 11:05:02,679 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 25 treesize of output 36 [2022-11-16 11:05:04,490 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:05:04,498 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:05:04,509 INFO L321 Elim1Store]: treesize reduction 24, result has 4.0 percent of original size [2022-11-16 11:05:04,510 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 6 new quantified variables, introduced 6 case distinctions, treesize of input 100 treesize of output 82 [2022-11-16 11:05:06,795 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:05:06,796 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 11:05:06,950 INFO L321 Elim1Store]: treesize reduction 22, result has 33.3 percent of original size [2022-11-16 11:05:06,950 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 1 disjoint index pairs (out of 10 index pairs), introduced 8 new quantified variables, introduced 10 case distinctions, treesize of input 90 treesize of output 55 [2022-11-16 11:05:10,716 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:05:10,716 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:05:24,157 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1130853222] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 11:05:24,157 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-16 11:05:24,158 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 32] total 67 [2022-11-16 11:05:24,158 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1236231905] [2022-11-16 11:05:24,158 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-16 11:05:24,158 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 69 states [2022-11-16 11:05:24,159 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 11:05:24,159 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 69 interpolants. [2022-11-16 11:05:24,160 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=221, Invalid=5613, Unknown=18, NotChecked=0, Total=5852 [2022-11-16 11:05:24,160 INFO L87 Difference]: Start difference. First operand 429 states and 523 transitions. Second operand has 69 states, 62 states have (on average 1.8064516129032258) internal successors, (112), 55 states have internal predecessors, (112), 10 states have call successors, (10), 10 states have call predecessors, (10), 8 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2022-11-16 11:06:00,210 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:06:00,210 INFO L93 Difference]: Finished difference Result 462 states and 556 transitions. [2022-11-16 11:06:00,211 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2022-11-16 11:06:00,211 INFO L78 Accepts]: Start accepts. Automaton has has 69 states, 62 states have (on average 1.8064516129032258) internal successors, (112), 55 states have internal predecessors, (112), 10 states have call successors, (10), 10 states have call predecessors, (10), 8 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) Word has length 65 [2022-11-16 11:06:00,211 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:06:00,212 INFO L225 Difference]: With dead ends: 462 [2022-11-16 11:06:00,212 INFO L226 Difference]: Without dead ends: 462 [2022-11-16 11:06:00,213 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 194 GetRequests, 74 SyntacticMatches, 12 SemanticMatches, 108 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2890 ImplicationChecksByTransitivity, 87.1s TimeCoverageRelationStatistics Valid=466, Invalid=11474, Unknown=50, NotChecked=0, Total=11990 [2022-11-16 11:06:00,213 INFO L413 NwaCegarLoop]: 114 mSDtfsCounter, 121 mSDsluCounter, 3809 mSDsCounter, 0 mSdLazyCounter, 1118 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 122 SdHoareTripleChecker+Valid, 3923 SdHoareTripleChecker+Invalid, 3060 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 1118 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1915 IncrementalHoareTripleChecker+Unchecked, 7.9s IncrementalHoareTripleChecker+Time [2022-11-16 11:06:00,214 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [122 Valid, 3923 Invalid, 3060 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 1118 Invalid, 0 Unknown, 1915 Unchecked, 7.9s Time] [2022-11-16 11:06:00,214 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 462 states. [2022-11-16 11:06:00,220 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 462 to 435. [2022-11-16 11:06:00,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 435 states, 355 states have (on average 1.3690140845070422) internal successors, (486), 400 states have internal predecessors, (486), 20 states have call successors, (20), 17 states have call predecessors, (20), 18 states have return successors, (25), 17 states have call predecessors, (25), 20 states have call successors, (25) [2022-11-16 11:06:00,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 435 states to 435 states and 531 transitions. [2022-11-16 11:06:00,222 INFO L78 Accepts]: Start accepts. Automaton has 435 states and 531 transitions. Word has length 65 [2022-11-16 11:06:00,222 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:06:00,222 INFO L495 AbstractCegarLoop]: Abstraction has 435 states and 531 transitions. [2022-11-16 11:06:00,223 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 69 states, 62 states have (on average 1.8064516129032258) internal successors, (112), 55 states have internal predecessors, (112), 10 states have call successors, (10), 10 states have call predecessors, (10), 8 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2022-11-16 11:06:00,223 INFO L276 IsEmpty]: Start isEmpty. Operand 435 states and 531 transitions. [2022-11-16 11:06:00,223 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-11-16 11:06:00,224 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:06:00,224 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:06:00,235 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a381edf-ab01-41b6-92bc-f9af652b83c9/bin/uautomizer-tPACEb0tL8/cvc4 --incremental --print-success --lang smt (61)] Forceful destruction successful, exit code 0 [2022-11-16 11:06:00,446 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a381edf-ab01-41b6-92bc-f9af652b83c9/bin/uautomizer-tPACEb0tL8/mathsat -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)] Ended with exit code 0 [2022-11-16 11:06:00,635 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 61 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a381edf-ab01-41b6-92bc-f9af652b83c9/bin/uautomizer-tPACEb0tL8/cvc4 --incremental --print-success --lang smt,60 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a381edf-ab01-41b6-92bc-f9af652b83c9/bin/uautomizer-tPACEb0tL8/mathsat -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 11:06:00,636 INFO L420 AbstractCegarLoop]: === Iteration 59 === Targeting __ldv_list_addErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [free_reportsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 73 more)] === [2022-11-16 11:06:00,636 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:06:00,636 INFO L85 PathProgramCache]: Analyzing trace with hash -904871795, now seen corresponding path program 1 times [2022-11-16 11:06:00,637 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 11:06:00,637 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1196467065] [2022-11-16 11:06:00,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:06:00,637 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 11:06:00,637 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a381edf-ab01-41b6-92bc-f9af652b83c9/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 11:06:00,638 INFO L229 MonitoredProcess]: Starting monitored process 62 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a381edf-ab01-41b6-92bc-f9af652b83c9/bin/uautomizer-tPACEb0tL8/mathsat -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 11:06:00,639 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a381edf-ab01-41b6-92bc-f9af652b83c9/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (62)] Waiting until timeout for monitored process [2022-11-16 11:06:01,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:06:01,759 INFO L263 TraceCheckSpWp]: Trace formula consists of 440 conjuncts, 130 conjunts are in the unsatisfiable core [2022-11-16 11:06:01,767 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:06:02,263 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-16 11:06:02,735 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-11-16 11:06:02,736 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 19 treesize of output 27 [2022-11-16 11:06:04,102 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-16 11:06:04,131 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-16 11:06:05,272 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18 [2022-11-16 11:06:05,330 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2022-11-16 11:06:05,979 INFO L321 Elim1Store]: treesize reduction 56, result has 35.6 percent of original size [2022-11-16 11:06:05,979 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 30 treesize of output 51 [2022-11-16 11:06:06,139 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2022-11-16 11:06:06,802 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 3 [2022-11-16 11:06:06,887 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:06:06,888 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 16 [2022-11-16 11:06:08,298 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:06:08,474 INFO L321 Elim1Store]: treesize reduction 28, result has 37.8 percent of original size [2022-11-16 11:06:08,475 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 31 treesize of output 35 [2022-11-16 11:06:08,545 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2022-11-16 11:06:10,166 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-16 11:06:10,166 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 79 treesize of output 56 [2022-11-16 11:06:10,281 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 6 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 32 [2022-11-16 11:06:12,608 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:06:12,616 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:06:12,624 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:06:12,632 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:06:12,640 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:06:12,642 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 16 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 54 treesize of output 71 [2022-11-16 11:06:12,674 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:06:12,680 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:06:12,686 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:06:12,692 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:06:12,699 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:06:12,705 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:06:12,711 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:06:12,717 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:06:12,729 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-16 11:06:12,730 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 16 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 103 treesize of output 95 [2022-11-16 11:06:12,892 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 8 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 37 [2022-11-16 11:06:14,713 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:06:14,827 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-16 11:06:14,828 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 32 treesize of output 44 [2022-11-16 11:06:15,083 INFO L321 Elim1Store]: treesize reduction 48, result has 23.8 percent of original size [2022-11-16 11:06:15,083 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 81 treesize of output 82 [2022-11-16 11:06:15,228 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 52 treesize of output 36 [2022-11-16 11:06:15,360 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2022-11-16 11:06:15,817 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:06:15,934 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-16 11:06:15,934 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 32 treesize of output 44 [2022-11-16 11:06:16,152 INFO L321 Elim1Store]: treesize reduction 48, result has 23.8 percent of original size [2022-11-16 11:06:16,152 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 81 treesize of output 82 [2022-11-16 11:06:16,202 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 52 treesize of output 36 [2022-11-16 11:06:16,514 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2022-11-16 11:06:17,210 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2022-11-16 11:06:17,439 INFO L321 Elim1Store]: treesize reduction 48, result has 23.8 percent of original size [2022-11-16 11:06:17,440 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 81 treesize of output 82 [2022-11-16 11:06:17,590 INFO L321 Elim1Store]: treesize reduction 19, result has 32.1 percent of original size [2022-11-16 11:06:17,590 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 5 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 30 treesize of output 42 [2022-11-16 11:06:17,634 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 52 treesize of output 36 [2022-11-16 11:06:18,590 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:06:18,667 INFO L321 Elim1Store]: treesize reduction 39, result has 11.4 percent of original size [2022-11-16 11:06:18,667 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 81 treesize of output 78 [2022-11-16 11:06:18,776 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2022-11-16 11:06:18,805 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:06:18,811 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:06:18,812 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 7 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 40 [2022-11-16 11:06:21,363 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 7 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 13 [2022-11-16 11:06:25,262 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 5 [2022-11-16 11:06:25,345 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 3 [2022-11-16 11:06:29,106 INFO L321 Elim1Store]: treesize reduction 19, result has 47.2 percent of original size [2022-11-16 11:06:29,107 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 26 [2022-11-16 11:06:29,166 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-16 11:06:29,166 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2022-11-16 11:06:30,496 INFO L321 Elim1Store]: treesize reduction 224, result has 11.5 percent of original size [2022-11-16 11:06:30,496 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 6 new quantified variables, introduced 10 case distinctions, treesize of input 119 treesize of output 97 [2022-11-16 11:06:30,605 INFO L321 Elim1Store]: treesize reduction 67, result has 9.5 percent of original size [2022-11-16 11:06:30,605 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 4 case distinctions, treesize of input 66 treesize of output 69 [2022-11-16 11:06:32,113 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:06:32,114 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 11:06:32,209 INFO L321 Elim1Store]: treesize reduction 4, result has 66.7 percent of original size [2022-11-16 11:06:32,209 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 6 case distinctions, treesize of input 101 treesize of output 57 [2022-11-16 11:06:32,278 INFO L321 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2022-11-16 11:06:32,278 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 1 case distinctions, treesize of input 35 treesize of output 21 [2022-11-16 11:06:34,019 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:06:34,020 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:06:45,620 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 11:06:45,621 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1196467065] [2022-11-16 11:06:45,621 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1196467065] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 11:06:45,621 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [235165489] [2022-11-16 11:06:45,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:06:45,621 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-16 11:06:45,621 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a381edf-ab01-41b6-92bc-f9af652b83c9/bin/uautomizer-tPACEb0tL8/cvc4 [2022-11-16 11:06:45,622 INFO L229 MonitoredProcess]: Starting monitored process 63 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a381edf-ab01-41b6-92bc-f9af652b83c9/bin/uautomizer-tPACEb0tL8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-16 11:06:45,624 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a381edf-ab01-41b6-92bc-f9af652b83c9/bin/uautomizer-tPACEb0tL8/cvc4 --incremental --print-success --lang smt (63)] Waiting until timeout for monitored process [2022-11-16 11:06:47,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:06:47,187 INFO L263 TraceCheckSpWp]: Trace formula consists of 440 conjuncts, 125 conjunts are in the unsatisfiable core [2022-11-16 11:06:47,193 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:06:49,434 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-16 11:06:50,310 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-16 11:06:50,310 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2022-11-16 11:06:53,576 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-16 11:06:53,604 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-16 11:06:55,885 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18 [2022-11-16 11:06:55,958 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2022-11-16 11:06:57,068 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:06:57,087 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:06:57,088 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 36 [2022-11-16 11:06:57,184 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:06:57,185 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2022-11-16 11:06:58,171 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2022-11-16 11:06:58,242 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 3 [2022-11-16 11:07:01,686 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:07:01,910 INFO L321 Elim1Store]: treesize reduction 56, result has 35.6 percent of original size [2022-11-16 11:07:01,911 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 30 treesize of output 51 [2022-11-16 11:07:02,085 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2022-11-16 11:07:04,999 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-16 11:07:04,999 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 89 treesize of output 62 [2022-11-16 11:07:05,109 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 32 [2022-11-16 11:07:07,286 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:07:07,294 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:07:07,302 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:07:07,312 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:07:07,320 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:07:07,322 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 14 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 54 treesize of output 71 [2022-11-16 11:07:07,371 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:07:07,378 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:07:07,384 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:07:07,391 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:07:07,398 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:07:07,412 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:07:07,419 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:07:07,425 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:07:07,434 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-16 11:07:07,434 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 15 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 113 treesize of output 101 [2022-11-16 11:07:09,561 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:07:09,567 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:07:09,675 INFO L321 Elim1Store]: treesize reduction 39, result has 11.4 percent of original size [2022-11-16 11:07:09,675 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 91 treesize of output 86 [2022-11-16 11:07:10,151 INFO L321 Elim1Store]: treesize reduction 38, result has 53.7 percent of original size [2022-11-16 11:07:10,151 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 32 treesize of output 64 [2022-11-16 11:07:10,258 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-11-16 11:07:11,406 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:07:11,412 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:07:11,512 INFO L321 Elim1Store]: treesize reduction 39, result has 11.4 percent of original size [2022-11-16 11:07:11,513 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 91 treesize of output 86 [2022-11-16 11:07:11,964 INFO L321 Elim1Store]: treesize reduction 38, result has 53.7 percent of original size [2022-11-16 11:07:11,964 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 32 treesize of output 64 [2022-11-16 11:07:12,144 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-11-16 11:07:13,586 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:07:13,592 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:07:13,603 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:07:13,610 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:07:13,611 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 7 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 40 [2022-11-16 11:07:13,673 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:07:13,679 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:07:13,773 INFO L321 Elim1Store]: treesize reduction 39, result has 11.4 percent of original size [2022-11-16 11:07:13,774 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 91 treesize of output 86 [2022-11-16 11:07:14,262 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:07:14,274 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:07:14,281 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:07:14,302 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:07:14,303 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 7 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 40 [2022-11-16 11:07:14,367 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:07:14,380 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:07:14,481 INFO L321 Elim1Store]: treesize reduction 39, result has 11.4 percent of original size [2022-11-16 11:07:14,481 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 91 treesize of output 86 [2022-11-16 11:07:24,930 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:07:24,931 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 16 [2022-11-16 11:07:25,038 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 3 [2022-11-16 11:07:33,192 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:07:33,402 INFO L321 Elim1Store]: treesize reduction 18, result has 48.6 percent of original size [2022-11-16 11:07:33,403 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 31 treesize of output 35 [2022-11-16 11:07:33,440 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2022-11-16 11:07:35,638 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:07:36,142 INFO L321 Elim1Store]: treesize reduction 168, result has 18.0 percent of original size [2022-11-16 11:07:36,143 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 5 case distinctions, treesize of input 72 treesize of output 75 [2022-11-16 11:07:36,569 INFO L321 Elim1Store]: treesize reduction 176, result has 14.1 percent of original size [2022-11-16 11:07:36,570 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 6 new quantified variables, introduced 10 case distinctions, treesize of input 120 treesize of output 94 [2022-11-16 11:07:39,516 INFO L321 Elim1Store]: treesize reduction 84, result has 7.7 percent of original size [2022-11-16 11:07:39,516 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 1 disjoint index pairs (out of 10 index pairs), introduced 7 new quantified variables, introduced 10 case distinctions, treesize of input 160 treesize of output 102 [2022-11-16 11:07:39,712 INFO L321 Elim1Store]: treesize reduction 32, result has 28.9 percent of original size [2022-11-16 11:07:39,712 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 6 case distinctions, treesize of input 76 treesize of output 45 [2022-11-16 11:07:44,377 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:07:44,377 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:07:53,859 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [235165489] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 11:07:53,860 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-16 11:07:53,860 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [38, 35] total 73 [2022-11-16 11:07:53,860 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [732262323] [2022-11-16 11:07:53,860 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-16 11:07:53,860 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 75 states [2022-11-16 11:07:53,860 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 11:07:53,861 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 75 interpolants. [2022-11-16 11:07:53,861 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=262, Invalid=6511, Unknown=33, NotChecked=0, Total=6806 [2022-11-16 11:07:53,862 INFO L87 Difference]: Start difference. First operand 435 states and 531 transitions. Second operand has 75 states, 68 states have (on average 1.6470588235294117) internal successors, (112), 58 states have internal predecessors, (112), 10 states have call successors, (10), 10 states have call predecessors, (10), 8 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2022-11-16 11:08:24,771 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:08:24,771 INFO L93 Difference]: Finished difference Result 455 states and 550 transitions. [2022-11-16 11:08:24,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2022-11-16 11:08:24,772 INFO L78 Accepts]: Start accepts. Automaton has has 75 states, 68 states have (on average 1.6470588235294117) internal successors, (112), 58 states have internal predecessors, (112), 10 states have call successors, (10), 10 states have call predecessors, (10), 8 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) Word has length 65 [2022-11-16 11:08:24,773 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:08:24,775 INFO L225 Difference]: With dead ends: 455 [2022-11-16 11:08:24,775 INFO L226 Difference]: Without dead ends: 455 [2022-11-16 11:08:24,776 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 185 GetRequests, 68 SyntacticMatches, 9 SemanticMatches, 108 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3308 ImplicationChecksByTransitivity, 101.6s TimeCoverageRelationStatistics Valid=467, Invalid=11488, Unknown=35, NotChecked=0, Total=11990 [2022-11-16 11:08:24,776 INFO L413 NwaCegarLoop]: 116 mSDtfsCounter, 112 mSDsluCounter, 3674 mSDsCounter, 0 mSdLazyCounter, 1059 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 113 SdHoareTripleChecker+Valid, 3790 SdHoareTripleChecker+Invalid, 3467 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 1059 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 2384 IncrementalHoareTripleChecker+Unchecked, 7.7s IncrementalHoareTripleChecker+Time [2022-11-16 11:08:24,776 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [113 Valid, 3790 Invalid, 3467 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 1059 Invalid, 0 Unknown, 2384 Unchecked, 7.7s Time] [2022-11-16 11:08:24,777 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 455 states. [2022-11-16 11:08:24,781 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 455 to 435. [2022-11-16 11:08:24,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 435 states, 355 states have (on average 1.3661971830985915) internal successors, (485), 400 states have internal predecessors, (485), 20 states have call successors, (20), 17 states have call predecessors, (20), 18 states have return successors, (25), 17 states have call predecessors, (25), 20 states have call successors, (25) [2022-11-16 11:08:24,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 435 states to 435 states and 530 transitions. [2022-11-16 11:08:24,783 INFO L78 Accepts]: Start accepts. Automaton has 435 states and 530 transitions. Word has length 65 [2022-11-16 11:08:24,783 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:08:24,783 INFO L495 AbstractCegarLoop]: Abstraction has 435 states and 530 transitions. [2022-11-16 11:08:24,783 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 75 states, 68 states have (on average 1.6470588235294117) internal successors, (112), 58 states have internal predecessors, (112), 10 states have call successors, (10), 10 states have call predecessors, (10), 8 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2022-11-16 11:08:24,783 INFO L276 IsEmpty]: Start isEmpty. Operand 435 states and 530 transitions. [2022-11-16 11:08:24,784 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-11-16 11:08:24,784 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:08:24,784 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:08:24,799 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a381edf-ab01-41b6-92bc-f9af652b83c9/bin/uautomizer-tPACEb0tL8/cvc4 --incremental --print-success --lang smt (63)] Forceful destruction successful, exit code 0 [2022-11-16 11:08:25,004 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a381edf-ab01-41b6-92bc-f9af652b83c9/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (62)] Ended with exit code 0 [2022-11-16 11:08:25,194 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 63 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a381edf-ab01-41b6-92bc-f9af652b83c9/bin/uautomizer-tPACEb0tL8/cvc4 --incremental --print-success --lang smt,62 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a381edf-ab01-41b6-92bc-f9af652b83c9/bin/uautomizer-tPACEb0tL8/mathsat -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 11:08:25,194 INFO L420 AbstractCegarLoop]: === Iteration 60 === Targeting ldv_list_delErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [free_reportsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 73 more)] === [2022-11-16 11:08:25,194 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:08:25,194 INFO L85 PathProgramCache]: Analyzing trace with hash -1895589782, now seen corresponding path program 1 times [2022-11-16 11:08:25,195 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 11:08:25,195 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2017393044] [2022-11-16 11:08:25,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:08:25,195 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 11:08:25,195 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a381edf-ab01-41b6-92bc-f9af652b83c9/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 11:08:25,196 INFO L229 MonitoredProcess]: Starting monitored process 64 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a381edf-ab01-41b6-92bc-f9af652b83c9/bin/uautomizer-tPACEb0tL8/mathsat -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 11:08:25,200 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a381edf-ab01-41b6-92bc-f9af652b83c9/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (64)] Waiting until timeout for monitored process [2022-11-16 11:08:26,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:08:26,079 INFO L263 TraceCheckSpWp]: Trace formula consists of 386 conjuncts, 85 conjunts are in the unsatisfiable core [2022-11-16 11:08:26,084 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:08:26,847 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-11-16 11:08:26,847 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 19 treesize of output 27 [2022-11-16 11:08:27,875 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-16 11:08:27,976 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-16 11:08:28,252 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-11-16 11:08:28,350 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-11-16 11:08:29,205 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18 [2022-11-16 11:08:29,286 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2022-11-16 11:08:29,847 INFO L321 Elim1Store]: treesize reduction 56, result has 35.6 percent of original size [2022-11-16 11:08:29,848 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 30 treesize of output 51 [2022-11-16 11:08:30,574 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:08:30,575 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 16 [2022-11-16 11:08:32,273 INFO L321 Elim1Store]: treesize reduction 28, result has 37.8 percent of original size [2022-11-16 11:08:32,274 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 31 treesize of output 35 [2022-11-16 11:08:38,313 INFO L321 Elim1Store]: treesize reduction 48, result has 23.8 percent of original size [2022-11-16 11:08:38,313 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 7 case distinctions, treesize of input 115 treesize of output 109 [2022-11-16 11:08:38,515 INFO L321 Elim1Store]: treesize reduction 35, result has 32.7 percent of original size [2022-11-16 11:08:38,515 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 43 treesize of output 57 [2022-11-16 11:08:38,582 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 7 [2022-11-16 11:08:41,564 INFO L321 Elim1Store]: treesize reduction 35, result has 32.7 percent of original size [2022-11-16 11:08:41,564 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 43 treesize of output 57 [2022-11-16 11:08:41,785 INFO L321 Elim1Store]: treesize reduction 48, result has 23.8 percent of original size [2022-11-16 11:08:41,785 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 7 case distinctions, treesize of input 121 treesize of output 113 [2022-11-16 11:08:41,941 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 7 [2022-11-16 11:08:50,095 INFO L321 Elim1Store]: treesize reduction 32, result has 31.9 percent of original size [2022-11-16 11:08:50,095 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 57 treesize of output 59 [2022-11-16 11:08:50,226 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-16 11:08:50,226 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 32 [2022-11-16 11:08:50,265 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-11-16 11:08:50,368 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 27 [2022-11-16 11:08:51,054 INFO L321 Elim1Store]: treesize reduction 32, result has 31.9 percent of original size [2022-11-16 11:08:51,054 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 57 treesize of output 59 [2022-11-16 11:08:51,187 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-16 11:08:51,187 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 32 [2022-11-16 11:08:51,203 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 27 [2022-11-16 11:08:51,385 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-11-16 11:08:52,039 INFO L321 Elim1Store]: treesize reduction 32, result has 31.9 percent of original size [2022-11-16 11:08:52,039 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 57 treesize of output 59 [2022-11-16 11:08:52,171 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-16 11:08:52,172 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 32 [2022-11-16 11:08:52,210 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-11-16 11:08:52,307 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 27 [2022-11-16 11:08:52,898 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:08:52,899 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 30 [2022-11-16 11:08:52,920 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:08:52,987 INFO L321 Elim1Store]: treesize reduction 23, result has 17.9 percent of original size [2022-11-16 11:08:52,987 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 57 treesize of output 55 [2022-11-16 11:08:56,145 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 11:08:56,196 INFO L321 Elim1Store]: treesize reduction 32, result has 8.6 percent of original size [2022-11-16 11:08:56,196 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 59 treesize of output 31 [2022-11-16 11:08:56,282 INFO L321 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2022-11-16 11:08:56,282 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 31 treesize of output 16 [2022-11-16 11:08:57,197 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 11:08:57,198 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 11:08:57,198 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 11:08:57,198 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2017393044] [2022-11-16 11:08:57,198 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2017393044] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:08:57,198 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:08:57,198 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [27] imperfect sequences [] total 27 [2022-11-16 11:08:57,198 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1471216123] [2022-11-16 11:08:57,198 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:08:57,199 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-11-16 11:08:57,199 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 11:08:57,199 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-11-16 11:08:57,199 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=681, Unknown=0, NotChecked=0, Total=756 [2022-11-16 11:08:57,199 INFO L87 Difference]: Start difference. First operand 435 states and 530 transitions. Second operand has 28 states, 25 states have (on average 2.28) internal successors, (57), 21 states have internal predecessors, (57), 5 states have call successors, (5), 5 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-16 11:09:04,102 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:09:04,103 INFO L93 Difference]: Finished difference Result 428 states and 510 transitions. [2022-11-16 11:09:04,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-11-16 11:09:04,103 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 25 states have (on average 2.28) internal successors, (57), 21 states have internal predecessors, (57), 5 states have call successors, (5), 5 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 65 [2022-11-16 11:09:04,104 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:09:04,105 INFO L225 Difference]: With dead ends: 428 [2022-11-16 11:09:04,105 INFO L226 Difference]: Without dead ends: 428 [2022-11-16 11:09:04,105 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 34 SyntacticMatches, 4 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 264 ImplicationChecksByTransitivity, 20.8s TimeCoverageRelationStatistics Valid=129, Invalid=1203, Unknown=0, NotChecked=0, Total=1332 [2022-11-16 11:09:04,105 INFO L413 NwaCegarLoop]: 141 mSDtfsCounter, 25 mSDsluCounter, 2111 mSDsCounter, 0 mSdLazyCounter, 497 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 2252 SdHoareTripleChecker+Invalid, 1086 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 497 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 579 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2022-11-16 11:09:04,106 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 2252 Invalid, 1086 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 497 Invalid, 0 Unknown, 579 Unchecked, 3.5s Time] [2022-11-16 11:09:04,107 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 428 states. [2022-11-16 11:09:04,112 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 428 to 396. [2022-11-16 11:09:04,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 396 states, 322 states have (on average 1.3478260869565217) internal successors, (434), 365 states have internal predecessors, (434), 16 states have call successors, (16), 15 states have call predecessors, (16), 16 states have return successors, (20), 15 states have call predecessors, (20), 16 states have call successors, (20) [2022-11-16 11:09:04,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 396 states to 396 states and 470 transitions. [2022-11-16 11:09:04,113 INFO L78 Accepts]: Start accepts. Automaton has 396 states and 470 transitions. Word has length 65 [2022-11-16 11:09:04,113 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:09:04,113 INFO L495 AbstractCegarLoop]: Abstraction has 396 states and 470 transitions. [2022-11-16 11:09:04,114 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 25 states have (on average 2.28) internal successors, (57), 21 states have internal predecessors, (57), 5 states have call successors, (5), 5 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-16 11:09:04,114 INFO L276 IsEmpty]: Start isEmpty. Operand 396 states and 470 transitions. [2022-11-16 11:09:04,115 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-11-16 11:09:04,115 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:09:04,115 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:09:04,134 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a381edf-ab01-41b6-92bc-f9af652b83c9/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (64)] Forceful destruction successful, exit code 0 [2022-11-16 11:09:04,333 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 64 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a381edf-ab01-41b6-92bc-f9af652b83c9/bin/uautomizer-tPACEb0tL8/mathsat -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 11:09:04,333 INFO L420 AbstractCegarLoop]: === Iteration 61 === Targeting free_reportsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [free_reportsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 73 more)] === [2022-11-16 11:09:04,333 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:09:04,333 INFO L85 PathProgramCache]: Analyzing trace with hash 814187831, now seen corresponding path program 1 times [2022-11-16 11:09:04,333 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 11:09:04,334 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [424128670] [2022-11-16 11:09:04,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:09:04,334 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 11:09:04,334 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a381edf-ab01-41b6-92bc-f9af652b83c9/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 11:09:04,335 INFO L229 MonitoredProcess]: Starting monitored process 65 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a381edf-ab01-41b6-92bc-f9af652b83c9/bin/uautomizer-tPACEb0tL8/mathsat -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 11:09:04,336 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a381edf-ab01-41b6-92bc-f9af652b83c9/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (65)] Waiting until timeout for monitored process [2022-11-16 11:09:05,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:09:05,023 INFO L263 TraceCheckSpWp]: Trace formula consists of 370 conjuncts, 65 conjunts are in the unsatisfiable core [2022-11-16 11:09:05,027 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:09:05,326 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 11:09:06,364 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-16 11:09:06,824 INFO L321 Elim1Store]: treesize reduction 70, result has 30.7 percent of original size [2022-11-16 11:09:06,825 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 30 treesize of output 51 [2022-11-16 11:09:07,287 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:09:07,302 INFO L321 Elim1Store]: treesize reduction 13, result has 7.1 percent of original size [2022-11-16 11:09:07,303 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 16 [2022-11-16 11:09:08,354 INFO L321 Elim1Store]: treesize reduction 102, result has 29.2 percent of original size [2022-11-16 11:09:08,354 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 8 case distinctions, treesize of input 37 treesize of output 67 [2022-11-16 11:09:09,498 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 30 [2022-11-16 11:09:10,618 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 63 treesize of output 69 [2022-11-16 11:09:11,930 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-16 11:09:11,931 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 41 treesize of output 46 [2022-11-16 11:09:12,006 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 16 [2022-11-16 11:09:12,546 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-16 11:09:12,546 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 41 treesize of output 46 [2022-11-16 11:09:12,575 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 16 [2022-11-16 11:09:13,272 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-16 11:09:13,273 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 41 treesize of output 46 [2022-11-16 11:09:13,317 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 16 [2022-11-16 11:09:14,020 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-16 11:09:14,020 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 41 treesize of output 46 [2022-11-16 11:09:14,078 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 16 [2022-11-16 11:09:18,933 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:09:18,951 INFO L321 Elim1Store]: treesize reduction 13, result has 7.1 percent of original size [2022-11-16 11:09:18,951 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 5 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 35 treesize of output 48 [2022-11-16 11:09:21,543 INFO L321 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2022-11-16 11:09:21,543 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 77 treesize of output 36 [2022-11-16 11:09:22,536 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:09:22,537 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:09:24,878 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_5558 (_ BitVec 1)) (v_ArrVal_5557 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_5559 (_ BitVec 1))) (= (_ bv0 1) (bvadd (_ bv1 1) (select (store (store |c_#valid| |c_ULTIMATE.start_hid_open_report_~parser~0#1.base| v_ArrVal_5559) |c_ULTIMATE.start_hid_open_report_~#item~0#1.base| v_ArrVal_5558) (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_fetch_item_~item#1.base| v_ArrVal_5557) |c_~#dev~0.base|) |c_~#dev~0.offset|))))) is different from false [2022-11-16 11:09:25,005 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_5558 (_ BitVec 1)) (v_ArrVal_5557 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_5559 (_ BitVec 1))) (= (_ bv0 1) (bvadd (select (store (store |c_#valid| |c_ULTIMATE.start_hid_open_report_~parser~0#1.base| v_ArrVal_5559) |c_ULTIMATE.start_hid_open_report_~#item~0#1.base| v_ArrVal_5558) (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_hid_open_report_~#item~0#1.base| v_ArrVal_5557) |c_~#dev~0.base|) |c_~#dev~0.offset|)) (_ bv1 1)))) is different from false [2022-11-16 11:10:00,220 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 11:10:00,220 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [424128670] [2022-11-16 11:10:00,220 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [424128670] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 11:10:00,220 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [331959874] [2022-11-16 11:10:00,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:10:00,221 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-16 11:10:00,221 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a381edf-ab01-41b6-92bc-f9af652b83c9/bin/uautomizer-tPACEb0tL8/cvc4 [2022-11-16 11:10:00,223 INFO L229 MonitoredProcess]: Starting monitored process 66 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a381edf-ab01-41b6-92bc-f9af652b83c9/bin/uautomizer-tPACEb0tL8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-16 11:10:00,223 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a381edf-ab01-41b6-92bc-f9af652b83c9/bin/uautomizer-tPACEb0tL8/cvc4 --incremental --print-success --lang smt (66)] Waiting until timeout for monitored process [2022-11-16 11:10:01,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:10:01,394 INFO L263 TraceCheckSpWp]: Trace formula consists of 370 conjuncts, 86 conjunts are in the unsatisfiable core [2022-11-16 11:10:01,399 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:10:03,537 INFO L321 Elim1Store]: treesize reduction 12, result has 42.9 percent of original size [2022-11-16 11:10:03,538 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 20 treesize of output 22 [2022-11-16 11:10:07,983 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-16 11:10:08,858 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:10:08,864 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:10:08,865 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 5 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 36 [2022-11-16 11:10:09,782 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2022-11-16 11:10:12,504 INFO L321 Elim1Store]: treesize reduction 56, result has 35.6 percent of original size [2022-11-16 11:10:12,504 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 30 treesize of output 51 [2022-11-16 11:10:14,887 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 62 treesize of output 41 [2022-11-16 11:10:15,057 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-16 11:10:16,611 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:10:16,617 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:10:16,623 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:10:16,629 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:10:16,630 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 10 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 47 [2022-11-16 11:10:16,732 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:10:16,739 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:10:16,745 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:10:16,751 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:10:16,758 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-16 11:10:16,759 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 10 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 86 treesize of output 80 [2022-11-16 11:10:18,596 INFO L321 Elim1Store]: treesize reduction 32, result has 31.9 percent of original size [2022-11-16 11:10:18,596 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 64 treesize of output 63 [2022-11-16 11:10:18,699 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-11-16 11:10:18,897 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-16 11:10:18,897 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 20 [2022-11-16 11:10:18,931 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-11-16 11:10:20,048 INFO L321 Elim1Store]: treesize reduction 32, result has 31.9 percent of original size [2022-11-16 11:10:20,048 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 68 treesize of output 67 [2022-11-16 11:10:20,339 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-16 11:10:20,339 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 18 treesize of output 24 [2022-11-16 11:10:20,889 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-16 11:10:20,890 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 18 treesize of output 24 [2022-11-16 11:10:21,147 INFO L321 Elim1Store]: treesize reduction 32, result has 31.9 percent of original size [2022-11-16 11:10:21,147 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 68 treesize of output 67 [2022-11-16 11:10:21,678 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-16 11:10:21,678 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 18 treesize of output 24 [2022-11-16 11:10:21,987 INFO L321 Elim1Store]: treesize reduction 32, result has 31.9 percent of original size [2022-11-16 11:10:21,987 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 68 treesize of output 67 [2022-11-16 11:10:24,854 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2022-11-16 11:10:30,567 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:10:30,574 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:10:30,580 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:10:30,592 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:10:30,593 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 8 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 43 [2022-11-16 11:10:33,221 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-11-16 11:10:33,221 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 65 treesize of output 37 [2022-11-16 11:10:35,703 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:10:35,703 INFO L328 TraceCheckSpWp]: Computing backward predicates...