./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/weaver/unroll-4.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version e04fb08f Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d701371-018f-4875-9ab4-db23ae9536d3/bin/uautomizer-tPACEb0tL8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d701371-018f-4875-9ab4-db23ae9536d3/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_0d701371-018f-4875-9ab4-db23ae9536d3/bin/uautomizer-tPACEb0tL8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d701371-018f-4875-9ab4-db23ae9536d3/bin/uautomizer-tPACEb0tL8/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/weaver/unroll-4.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d701371-018f-4875-9ab4-db23ae9536d3/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_0d701371-018f-4875-9ab4-db23ae9536d3/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 7071c3ff0bb3d9f81f254bc51d27ce3551a85cc081b1b878560a7d4c8f67639e --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-e04fb08 [2022-11-16 11:07:02,462 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-16 11:07:02,464 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-16 11:07:02,506 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-16 11:07:02,507 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-16 11:07:02,508 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-16 11:07:02,509 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-16 11:07:02,511 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-16 11:07:02,513 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-16 11:07:02,518 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-16 11:07:02,519 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-16 11:07:02,521 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-16 11:07:02,521 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-16 11:07:02,522 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-16 11:07:02,524 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-16 11:07:02,525 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-16 11:07:02,526 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-16 11:07:02,527 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-16 11:07:02,529 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-16 11:07:02,531 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-16 11:07:02,532 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-16 11:07:02,534 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-16 11:07:02,535 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-16 11:07:02,536 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-16 11:07:02,539 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-16 11:07:02,540 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-16 11:07:02,540 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-16 11:07:02,541 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-16 11:07:02,542 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-16 11:07:02,543 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-16 11:07:02,543 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-16 11:07:02,544 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-16 11:07:02,545 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-16 11:07:02,546 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-16 11:07:02,547 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-16 11:07:02,547 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-16 11:07:02,548 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-16 11:07:02,548 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-16 11:07:02,549 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-16 11:07:02,550 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-16 11:07:02,550 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-16 11:07:02,551 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d701371-018f-4875-9ab4-db23ae9536d3/bin/uautomizer-tPACEb0tL8/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2022-11-16 11:07:02,575 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-16 11:07:02,575 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-16 11:07:02,575 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-16 11:07:02,576 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-16 11:07:02,576 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-16 11:07:02,577 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-16 11:07:02,577 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-16 11:07:02,577 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-16 11:07:02,578 INFO L138 SettingsManager]: * Use SBE=true [2022-11-16 11:07:02,578 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-16 11:07:02,578 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-16 11:07:02,578 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-16 11:07:02,579 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-16 11:07:02,579 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-16 11:07:02,579 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-16 11:07:02,579 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-11-16 11:07:02,580 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-11-16 11:07:02,580 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-11-16 11:07:02,580 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-16 11:07:02,580 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-16 11:07:02,580 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-16 11:07:02,581 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-16 11:07:02,581 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-16 11:07:02,581 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-16 11:07:02,581 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-16 11:07:02,582 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 11:07:02,582 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-16 11:07:02,582 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-16 11:07:02,582 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-16 11:07:02,583 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-16 11:07:02,583 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_0d701371-018f-4875-9ab4-db23ae9536d3/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d701371-018f-4875-9ab4-db23ae9536d3/bin/uautomizer-tPACEb0tL8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7071c3ff0bb3d9f81f254bc51d27ce3551a85cc081b1b878560a7d4c8f67639e [2022-11-16 11:07:02,948 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-16 11:07:02,982 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-16 11:07:02,987 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-16 11:07:02,990 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-16 11:07:02,991 INFO L275 PluginConnector]: CDTParser initialized [2022-11-16 11:07:02,993 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d701371-018f-4875-9ab4-db23ae9536d3/bin/uautomizer-tPACEb0tL8/../../sv-benchmarks/c/weaver/unroll-4.wvr.c [2022-11-16 11:07:03,080 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d701371-018f-4875-9ab4-db23ae9536d3/bin/uautomizer-tPACEb0tL8/data/3fb942d9b/e0c4a8e423bd424a9d11a072957dd333/FLAG03e0ba1ac [2022-11-16 11:07:03,707 INFO L306 CDTParser]: Found 1 translation units. [2022-11-16 11:07:03,713 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d701371-018f-4875-9ab4-db23ae9536d3/sv-benchmarks/c/weaver/unroll-4.wvr.c [2022-11-16 11:07:03,725 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d701371-018f-4875-9ab4-db23ae9536d3/bin/uautomizer-tPACEb0tL8/data/3fb942d9b/e0c4a8e423bd424a9d11a072957dd333/FLAG03e0ba1ac [2022-11-16 11:07:04,020 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d701371-018f-4875-9ab4-db23ae9536d3/bin/uautomizer-tPACEb0tL8/data/3fb942d9b/e0c4a8e423bd424a9d11a072957dd333 [2022-11-16 11:07:04,025 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-16 11:07:04,029 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-16 11:07:04,033 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-16 11:07:04,033 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-16 11:07:04,038 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-16 11:07:04,039 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 11:07:04" (1/1) ... [2022-11-16 11:07:04,041 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1f18e233 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:07:04, skipping insertion in model container [2022-11-16 11:07:04,042 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 11:07:04" (1/1) ... [2022-11-16 11:07:04,051 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-16 11:07:04,082 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-16 11:07:04,420 WARN L229 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d701371-018f-4875-9ab4-db23ae9536d3/sv-benchmarks/c/weaver/unroll-4.wvr.c[2572,2585] [2022-11-16 11:07:04,442 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 11:07:04,466 ERROR L326 MainTranslator]: Unsupported Syntax: Found a cast between two array/pointer types of different sizes while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) [2022-11-16 11:07:04,467 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@1291d69c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:07:04, skipping insertion in model container [2022-11-16 11:07:04,467 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-16 11:07:04,468 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2022-11-16 11:07:04,471 INFO L158 Benchmark]: Toolchain (without parser) took 440.80ms. Allocated memory is still 121.6MB. Free memory was 84.2MB in the beginning and 97.4MB in the end (delta: -13.2MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-11-16 11:07:04,473 INFO L158 Benchmark]: CDTParser took 1.11ms. Allocated memory is still 121.6MB. Free memory is still 101.1MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-16 11:07:04,475 INFO L158 Benchmark]: CACSL2BoogieTranslator took 435.53ms. Allocated memory is still 121.6MB. Free memory was 84.1MB in the beginning and 97.4MB in the end (delta: -13.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-11-16 11:07:04,478 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.11ms. Allocated memory is still 121.6MB. Free memory is still 101.1MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 435.53ms. Allocated memory is still 121.6MB. Free memory was 84.1MB in the beginning and 97.4MB in the end (delta: -13.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 103]: Unsupported Syntax Found a cast between two array/pointer types of different sizes while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d701371-018f-4875-9ab4-db23ae9536d3/bin/uautomizer-tPACEb0tL8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d701371-018f-4875-9ab4-db23ae9536d3/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_0d701371-018f-4875-9ab4-db23ae9536d3/bin/uautomizer-tPACEb0tL8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d701371-018f-4875-9ab4-db23ae9536d3/bin/uautomizer-tPACEb0tL8/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/weaver/unroll-4.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d701371-018f-4875-9ab4-db23ae9536d3/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_0d701371-018f-4875-9ab4-db23ae9536d3/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 7071c3ff0bb3d9f81f254bc51d27ce3551a85cc081b1b878560a7d4c8f67639e --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-e04fb08 [2022-11-16 11:07:07,011 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-16 11:07:07,014 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-16 11:07:07,054 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-16 11:07:07,055 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-16 11:07:07,061 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-16 11:07:07,063 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-16 11:07:07,068 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-16 11:07:07,072 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-16 11:07:07,077 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-16 11:07:07,079 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-16 11:07:07,082 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-16 11:07:07,084 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-16 11:07:07,092 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-16 11:07:07,094 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-16 11:07:07,095 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-16 11:07:07,097 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-16 11:07:07,099 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-16 11:07:07,101 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-16 11:07:07,104 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-16 11:07:07,116 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-16 11:07:07,117 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-16 11:07:07,119 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-16 11:07:07,120 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-16 11:07:07,125 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-16 11:07:07,125 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-16 11:07:07,125 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-16 11:07:07,127 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-16 11:07:07,127 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-16 11:07:07,129 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-16 11:07:07,129 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-16 11:07:07,130 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-16 11:07:07,131 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-16 11:07:07,132 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-16 11:07:07,133 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-16 11:07:07,134 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-16 11:07:07,135 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-16 11:07:07,135 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-16 11:07:07,136 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-16 11:07:07,137 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-16 11:07:07,138 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-16 11:07:07,139 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d701371-018f-4875-9ab4-db23ae9536d3/bin/uautomizer-tPACEb0tL8/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2022-11-16 11:07:07,178 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-16 11:07:07,182 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-16 11:07:07,183 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-16 11:07:07,184 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-16 11:07:07,185 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-16 11:07:07,185 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-16 11:07:07,187 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-16 11:07:07,187 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-16 11:07:07,187 INFO L138 SettingsManager]: * Use SBE=true [2022-11-16 11:07:07,188 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-16 11:07:07,189 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-16 11:07:07,189 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-16 11:07:07,190 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-16 11:07:07,190 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-16 11:07:07,190 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-16 11:07:07,191 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-11-16 11:07:07,191 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-11-16 11:07:07,191 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-11-16 11:07:07,191 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-16 11:07:07,192 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-16 11:07:07,192 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-11-16 11:07:07,192 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-11-16 11:07:07,192 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-16 11:07:07,193 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-16 11:07:07,193 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-16 11:07:07,193 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-16 11:07:07,194 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-16 11:07:07,194 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 11:07:07,194 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-16 11:07:07,194 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-16 11:07:07,195 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-11-16 11:07:07,195 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-11-16 11:07:07,195 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-16 11:07:07,196 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_0d701371-018f-4875-9ab4-db23ae9536d3/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d701371-018f-4875-9ab4-db23ae9536d3/bin/uautomizer-tPACEb0tL8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7071c3ff0bb3d9f81f254bc51d27ce3551a85cc081b1b878560a7d4c8f67639e [2022-11-16 11:07:07,688 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-16 11:07:07,726 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-16 11:07:07,729 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-16 11:07:07,731 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-16 11:07:07,734 INFO L275 PluginConnector]: CDTParser initialized [2022-11-16 11:07:07,736 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d701371-018f-4875-9ab4-db23ae9536d3/bin/uautomizer-tPACEb0tL8/../../sv-benchmarks/c/weaver/unroll-4.wvr.c [2022-11-16 11:07:07,831 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d701371-018f-4875-9ab4-db23ae9536d3/bin/uautomizer-tPACEb0tL8/data/d62e9d209/ce736516ee9442f39726d995771f8df9/FLAG478704e5c [2022-11-16 11:07:08,530 INFO L306 CDTParser]: Found 1 translation units. [2022-11-16 11:07:08,533 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d701371-018f-4875-9ab4-db23ae9536d3/sv-benchmarks/c/weaver/unroll-4.wvr.c [2022-11-16 11:07:08,543 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d701371-018f-4875-9ab4-db23ae9536d3/bin/uautomizer-tPACEb0tL8/data/d62e9d209/ce736516ee9442f39726d995771f8df9/FLAG478704e5c [2022-11-16 11:07:08,831 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d701371-018f-4875-9ab4-db23ae9536d3/bin/uautomizer-tPACEb0tL8/data/d62e9d209/ce736516ee9442f39726d995771f8df9 [2022-11-16 11:07:08,834 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-16 11:07:08,836 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-16 11:07:08,838 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-16 11:07:08,838 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-16 11:07:08,846 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-16 11:07:08,847 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 11:07:08" (1/1) ... [2022-11-16 11:07:08,848 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@416170f0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:07:08, skipping insertion in model container [2022-11-16 11:07:08,849 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 11:07:08" (1/1) ... [2022-11-16 11:07:08,863 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-16 11:07:08,894 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-16 11:07:09,117 WARN L229 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d701371-018f-4875-9ab4-db23ae9536d3/sv-benchmarks/c/weaver/unroll-4.wvr.c[2572,2585] [2022-11-16 11:07:09,127 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 11:07:09,167 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2022-11-16 11:07:09,172 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-16 11:07:09,188 WARN L229 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d701371-018f-4875-9ab4-db23ae9536d3/sv-benchmarks/c/weaver/unroll-4.wvr.c[2572,2585] [2022-11-16 11:07:09,222 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 11:07:09,234 INFO L203 MainTranslator]: Completed pre-run [2022-11-16 11:07:09,277 WARN L229 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d701371-018f-4875-9ab4-db23ae9536d3/sv-benchmarks/c/weaver/unroll-4.wvr.c[2572,2585] [2022-11-16 11:07:09,296 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 11:07:09,323 INFO L208 MainTranslator]: Completed translation [2022-11-16 11:07:09,324 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:07:09 WrapperNode [2022-11-16 11:07:09,324 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-16 11:07:09,325 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-16 11:07:09,325 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-16 11:07:09,325 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-16 11:07:09,334 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:07:09" (1/1) ... [2022-11-16 11:07:09,363 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:07:09" (1/1) ... [2022-11-16 11:07:09,414 INFO L138 Inliner]: procedures = 26, calls = 36, calls flagged for inlining = 13, calls inlined = 13, statements flattened = 152 [2022-11-16 11:07:09,414 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-16 11:07:09,415 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-16 11:07:09,415 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-16 11:07:09,415 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-16 11:07:09,428 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:07:09" (1/1) ... [2022-11-16 11:07:09,429 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:07:09" (1/1) ... [2022-11-16 11:07:09,456 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:07:09" (1/1) ... [2022-11-16 11:07:09,456 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:07:09" (1/1) ... [2022-11-16 11:07:09,466 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:07:09" (1/1) ... [2022-11-16 11:07:09,487 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:07:09" (1/1) ... [2022-11-16 11:07:09,489 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:07:09" (1/1) ... [2022-11-16 11:07:09,491 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:07:09" (1/1) ... [2022-11-16 11:07:09,507 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-16 11:07:09,508 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-16 11:07:09,508 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-16 11:07:09,509 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-16 11:07:09,510 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:07:09" (1/1) ... [2022-11-16 11:07:09,517 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 11:07:09,531 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d701371-018f-4875-9ab4-db23ae9536d3/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:07:09,549 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d701371-018f-4875-9ab4-db23ae9536d3/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-16 11:07:09,582 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d701371-018f-4875-9ab4-db23ae9536d3/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-16 11:07:09,618 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-16 11:07:09,619 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-11-16 11:07:09,619 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-16 11:07:09,621 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2022-11-16 11:07:09,621 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-11-16 11:07:09,621 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-11-16 11:07:09,621 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-11-16 11:07:09,622 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-11-16 11:07:09,622 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-16 11:07:09,622 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-16 11:07:09,622 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-16 11:07:09,622 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-16 11:07:09,623 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2022-11-16 11:07:09,624 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-16 11:07:09,812 INFO L235 CfgBuilder]: Building ICFG [2022-11-16 11:07:09,814 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-16 11:07:10,665 INFO L276 CfgBuilder]: Performing block encoding [2022-11-16 11:07:10,677 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-16 11:07:10,677 INFO L300 CfgBuilder]: Removed 3 assume(true) statements. [2022-11-16 11:07:10,680 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 11:07:10 BoogieIcfgContainer [2022-11-16 11:07:10,681 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-16 11:07:10,684 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-16 11:07:10,684 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-16 11:07:10,688 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-16 11:07:10,688 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 11:07:08" (1/3) ... [2022-11-16 11:07:10,689 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2de39016 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 11:07:10, skipping insertion in model container [2022-11-16 11:07:10,689 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:07:09" (2/3) ... [2022-11-16 11:07:10,690 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2de39016 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 11:07:10, skipping insertion in model container [2022-11-16 11:07:10,690 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 11:07:10" (3/3) ... [2022-11-16 11:07:10,692 INFO L112 eAbstractionObserver]: Analyzing ICFG unroll-4.wvr.c [2022-11-16 11:07:10,717 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-16 11:07:10,717 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 22 error locations. [2022-11-16 11:07:10,718 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-16 11:07:10,986 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-11-16 11:07:11,045 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-16 11:07:11,067 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 212 places, 221 transitions, 458 flow [2022-11-16 11:07:11,070 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 212 places, 221 transitions, 458 flow [2022-11-16 11:07:11,073 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 212 places, 221 transitions, 458 flow [2022-11-16 11:07:11,183 INFO L130 PetriNetUnfolder]: 16/219 cut-off events. [2022-11-16 11:07:11,184 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-11-16 11:07:11,191 INFO L83 FinitePrefix]: Finished finitePrefix Result has 228 conditions, 219 events. 16/219 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 273 event pairs, 0 based on Foata normal form. 0/181 useless extension candidates. Maximal degree in co-relation 117. Up to 2 conditions per place. [2022-11-16 11:07:11,195 INFO L119 LiptonReduction]: Number of co-enabled transitions 5052 [2022-11-16 11:07:48,833 INFO L134 LiptonReduction]: Checked pairs total: 5042 [2022-11-16 11:07:48,833 INFO L136 LiptonReduction]: Total number of compositions: 257 [2022-11-16 11:07:48,843 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 45 places, 41 transitions, 98 flow [2022-11-16 11:07:48,889 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 294 states, 184 states have (on average 4.043478260869565) internal successors, (744), 293 states have internal predecessors, (744), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:07:48,912 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-16 11:07:48,920 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;@37e18f56, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-16 11:07:48,920 INFO L358 AbstractCegarLoop]: Starting to check reachability of 34 error locations. [2022-11-16 11:07:48,924 INFO L276 IsEmpty]: Start isEmpty. Operand has 294 states, 184 states have (on average 4.043478260869565) internal successors, (744), 293 states have internal predecessors, (744), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:07:48,930 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2022-11-16 11:07:48,930 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:07:48,931 INFO L195 NwaCegarLoop]: trace histogram [1, 1] [2022-11-16 11:07:48,932 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 31 more)] === [2022-11-16 11:07:48,937 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:07:48,938 INFO L85 PathProgramCache]: Analyzing trace with hash 28343, now seen corresponding path program 1 times [2022-11-16 11:07:48,953 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 11:07:48,953 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1908958433] [2022-11-16 11:07:48,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:07:48,954 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 11:07:48,954 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d701371-018f-4875-9ab4-db23ae9536d3/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 11:07:48,961 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d701371-018f-4875-9ab4-db23ae9536d3/bin/uautomizer-tPACEb0tL8/mathsat -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 11:07:49,022 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d701371-018f-4875-9ab4-db23ae9536d3/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-11-16 11:07:49,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:07:49,095 INFO L263 TraceCheckSpWp]: Trace formula consists of 46 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-16 11:07:49,100 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:07:49,329 INFO L321 Elim1Store]: treesize reduction 37, result has 37.3 percent of original size [2022-11-16 11:07:49,331 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 14 treesize of output 29 [2022-11-16 11:07:49,390 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 11:07:49,391 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 11:07:49,392 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 11:07:49,392 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1908958433] [2022-11-16 11:07:49,393 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1908958433] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:07:49,393 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:07:49,393 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-16 11:07:49,395 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [438590243] [2022-11-16 11:07:49,396 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:07:49,401 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 11:07:49,401 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 11:07:49,441 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 11:07:49,442 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:07:49,456 INFO L87 Difference]: Start difference. First operand has 294 states, 184 states have (on average 4.043478260869565) internal successors, (744), 293 states have internal predecessors, (744), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:07:49,737 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:07:49,738 INFO L93 Difference]: Finished difference Result 222 states and 559 transitions. [2022-11-16 11:07:49,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 11:07:49,744 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 2 [2022-11-16 11:07:49,745 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:07:49,766 INFO L225 Difference]: With dead ends: 222 [2022-11-16 11:07:49,767 INFO L226 Difference]: Without dead ends: 222 [2022-11-16 11:07:49,769 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:07:49,778 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 0 mSDsluCounter, 2 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 4 SdHoareTripleChecker+Invalid, 58 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 31 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-16 11:07:49,787 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 4 Invalid, 58 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 27 Invalid, 0 Unknown, 31 Unchecked, 0.2s Time] [2022-11-16 11:07:49,811 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 222 states. [2022-11-16 11:07:49,874 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 222 to 222. [2022-11-16 11:07:49,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 222 states, 146 states have (on average 3.828767123287671) internal successors, (559), 221 states have internal predecessors, (559), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:07:49,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 222 states to 222 states and 559 transitions. [2022-11-16 11:07:49,892 INFO L78 Accepts]: Start accepts. Automaton has 222 states and 559 transitions. Word has length 2 [2022-11-16 11:07:49,893 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:07:49,894 INFO L495 AbstractCegarLoop]: Abstraction has 222 states and 559 transitions. [2022-11-16 11:07:49,894 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:07:49,895 INFO L276 IsEmpty]: Start isEmpty. Operand 222 states and 559 transitions. [2022-11-16 11:07:49,895 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2022-11-16 11:07:49,895 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:07:49,895 INFO L195 NwaCegarLoop]: trace histogram [1, 1] [2022-11-16 11:07:49,921 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d701371-018f-4875-9ab4-db23ae9536d3/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Ended with exit code 0 [2022-11-16 11:07:50,121 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d701371-018f-4875-9ab4-db23ae9536d3/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 11:07:50,122 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 31 more)] === [2022-11-16 11:07:50,122 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:07:50,123 INFO L85 PathProgramCache]: Analyzing trace with hash 28345, now seen corresponding path program 1 times [2022-11-16 11:07:50,123 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 11:07:50,123 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1375599237] [2022-11-16 11:07:50,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:07:50,124 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 11:07:50,124 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d701371-018f-4875-9ab4-db23ae9536d3/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 11:07:50,129 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d701371-018f-4875-9ab4-db23ae9536d3/bin/uautomizer-tPACEb0tL8/mathsat -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 11:07:50,138 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d701371-018f-4875-9ab4-db23ae9536d3/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2022-11-16 11:07:50,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:07:50,236 INFO L263 TraceCheckSpWp]: Trace formula consists of 46 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-16 11:07:50,237 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:07:50,306 INFO L321 Elim1Store]: treesize reduction 39, result has 40.0 percent of original size [2022-11-16 11:07:50,306 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 12 treesize of output 33 [2022-11-16 11:07:50,329 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 11:07:50,330 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 11:07:50,330 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 11:07:50,331 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1375599237] [2022-11-16 11:07:50,331 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1375599237] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:07:50,331 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:07:50,331 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-16 11:07:50,332 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1385718695] [2022-11-16 11:07:50,332 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:07:50,334 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 11:07:50,335 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 11:07:50,336 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 11:07:50,336 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:07:50,336 INFO L87 Difference]: Start difference. First operand 222 states and 559 transitions. Second operand has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:07:50,612 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:07:50,612 INFO L93 Difference]: Finished difference Result 221 states and 557 transitions. [2022-11-16 11:07:50,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 11:07:50,613 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 2 [2022-11-16 11:07:50,614 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:07:50,616 INFO L225 Difference]: With dead ends: 221 [2022-11-16 11:07:50,616 INFO L226 Difference]: Without dead ends: 221 [2022-11-16 11:07:50,616 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:07:50,618 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 32 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 2 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-16 11:07:50,618 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [32 Valid, 2 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-16 11:07:50,620 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 221 states. [2022-11-16 11:07:50,644 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 221 to 221. [2022-11-16 11:07:50,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 221 states, 146 states have (on average 3.815068493150685) internal successors, (557), 220 states have internal predecessors, (557), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:07:50,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 221 states to 221 states and 557 transitions. [2022-11-16 11:07:50,647 INFO L78 Accepts]: Start accepts. Automaton has 221 states and 557 transitions. Word has length 2 [2022-11-16 11:07:50,647 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:07:50,648 INFO L495 AbstractCegarLoop]: Abstraction has 221 states and 557 transitions. [2022-11-16 11:07:50,648 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:07:50,648 INFO L276 IsEmpty]: Start isEmpty. Operand 221 states and 557 transitions. [2022-11-16 11:07:50,648 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2022-11-16 11:07:50,649 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:07:50,649 INFO L195 NwaCegarLoop]: trace histogram [1, 1] [2022-11-16 11:07:50,672 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d701371-018f-4875-9ab4-db23ae9536d3/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2022-11-16 11:07:50,872 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d701371-018f-4875-9ab4-db23ae9536d3/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 11:07:50,873 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 31 more)] === [2022-11-16 11:07:50,874 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:07:50,874 INFO L85 PathProgramCache]: Analyzing trace with hash 28527, now seen corresponding path program 1 times [2022-11-16 11:07:50,875 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 11:07:50,876 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1233722588] [2022-11-16 11:07:50,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:07:50,876 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 11:07:50,877 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d701371-018f-4875-9ab4-db23ae9536d3/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 11:07:50,878 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d701371-018f-4875-9ab4-db23ae9536d3/bin/uautomizer-tPACEb0tL8/mathsat -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 11:07:50,886 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d701371-018f-4875-9ab4-db23ae9536d3/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2022-11-16 11:07:50,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:07:50,985 INFO L263 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-16 11:07:50,985 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:07:51,020 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 11:07:51,020 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 11:07:51,020 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 11:07:51,021 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1233722588] [2022-11-16 11:07:51,021 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1233722588] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:07:51,021 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:07:51,021 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-16 11:07:51,022 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [53358821] [2022-11-16 11:07:51,022 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:07:51,022 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 11:07:51,023 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 11:07:51,023 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 11:07:51,023 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:07:51,024 INFO L87 Difference]: Start difference. First operand 221 states and 557 transitions. Second operand has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:07:51,438 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:07:51,438 INFO L93 Difference]: Finished difference Result 221 states and 554 transitions. [2022-11-16 11:07:51,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 11:07:51,439 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 2 [2022-11-16 11:07:51,439 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:07:51,441 INFO L225 Difference]: With dead ends: 221 [2022-11-16 11:07:51,441 INFO L226 Difference]: Without dead ends: 221 [2022-11-16 11:07:51,442 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:07:51,443 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 0 mSDsluCounter, 2 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 4 SdHoareTripleChecker+Invalid, 63 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 61 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-16 11:07:51,444 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 4 Invalid, 63 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 61 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-16 11:07:51,445 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 221 states. [2022-11-16 11:07:51,456 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 221 to 221. [2022-11-16 11:07:51,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 221 states, 146 states have (on average 3.7945205479452055) internal successors, (554), 220 states have internal predecessors, (554), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:07:51,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 221 states to 221 states and 554 transitions. [2022-11-16 11:07:51,459 INFO L78 Accepts]: Start accepts. Automaton has 221 states and 554 transitions. Word has length 2 [2022-11-16 11:07:51,459 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:07:51,459 INFO L495 AbstractCegarLoop]: Abstraction has 221 states and 554 transitions. [2022-11-16 11:07:51,460 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:07:51,460 INFO L276 IsEmpty]: Start isEmpty. Operand 221 states and 554 transitions. [2022-11-16 11:07:51,460 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2022-11-16 11:07:51,460 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:07:51,461 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2022-11-16 11:07:51,483 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d701371-018f-4875-9ab4-db23ae9536d3/bin/uautomizer-tPACEb0tL8/mathsat -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)] Ended with exit code 0 [2022-11-16 11:07:51,675 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d701371-018f-4875-9ab4-db23ae9536d3/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 11:07:51,675 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 31 more)] === [2022-11-16 11:07:51,676 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:07:51,676 INFO L85 PathProgramCache]: Analyzing trace with hash 882920, now seen corresponding path program 1 times [2022-11-16 11:07:51,676 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 11:07:51,676 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1597156825] [2022-11-16 11:07:51,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:07:51,677 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 11:07:51,677 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d701371-018f-4875-9ab4-db23ae9536d3/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 11:07:51,678 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d701371-018f-4875-9ab4-db23ae9536d3/bin/uautomizer-tPACEb0tL8/mathsat -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 11:07:51,680 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d701371-018f-4875-9ab4-db23ae9536d3/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2022-11-16 11:07:51,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:07:51,782 INFO L263 TraceCheckSpWp]: Trace formula consists of 57 conjuncts, 14 conjunts are in the unsatisfiable core [2022-11-16 11:07:51,784 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:07:51,950 INFO L321 Elim1Store]: treesize reduction 37, result has 37.3 percent of original size [2022-11-16 11:07:51,951 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 14 treesize of output 29 [2022-11-16 11:07:52,061 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:07:52,061 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:07:52,388 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:07:52,388 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 11:07:52,389 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1597156825] [2022-11-16 11:07:52,389 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1597156825] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 11:07:52,389 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-16 11:07:52,389 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2] total 4 [2022-11-16 11:07:52,389 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [240137430] [2022-11-16 11:07:52,389 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-16 11:07:52,390 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 11:07:52,390 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 11:07:52,390 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 11:07:52,390 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-11-16 11:07:52,391 INFO L87 Difference]: Start difference. First operand 221 states and 554 transitions. Second operand has 6 states, 5 states have (on average 1.2) internal successors, (6), 5 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:07:53,348 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:07:53,348 INFO L93 Difference]: Finished difference Result 441 states and 1113 transitions. [2022-11-16 11:07:53,350 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-16 11:07:53,350 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 1.2) internal successors, (6), 5 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2022-11-16 11:07:53,350 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:07:53,354 INFO L225 Difference]: With dead ends: 441 [2022-11-16 11:07:53,354 INFO L226 Difference]: Without dead ends: 441 [2022-11-16 11:07:53,354 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2022-11-16 11:07:53,355 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 153 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 96 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 153 SdHoareTripleChecker+Valid, 6 SdHoareTripleChecker+Invalid, 108 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 96 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-11-16 11:07:53,356 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [153 Valid, 6 Invalid, 108 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 96 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-11-16 11:07:53,358 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 441 states. [2022-11-16 11:07:53,369 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 441 to 224. [2022-11-16 11:07:53,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 224 states, 149 states have (on average 3.7986577181208054) internal successors, (566), 223 states have internal predecessors, (566), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:07:53,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 224 states to 224 states and 566 transitions. [2022-11-16 11:07:53,372 INFO L78 Accepts]: Start accepts. Automaton has 224 states and 566 transitions. Word has length 3 [2022-11-16 11:07:53,372 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:07:53,372 INFO L495 AbstractCegarLoop]: Abstraction has 224 states and 566 transitions. [2022-11-16 11:07:53,373 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 1.2) internal successors, (6), 5 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:07:53,373 INFO L276 IsEmpty]: Start isEmpty. Operand 224 states and 566 transitions. [2022-11-16 11:07:53,373 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2022-11-16 11:07:53,373 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:07:53,374 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2022-11-16 11:07:53,386 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d701371-018f-4875-9ab4-db23ae9536d3/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2022-11-16 11:07:53,586 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d701371-018f-4875-9ab4-db23ae9536d3/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 11:07:53,586 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 31 more)] === [2022-11-16 11:07:53,587 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:07:53,587 INFO L85 PathProgramCache]: Analyzing trace with hash 883104, now seen corresponding path program 1 times [2022-11-16 11:07:53,587 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 11:07:53,587 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1678438625] [2022-11-16 11:07:53,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:07:53,587 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 11:07:53,587 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d701371-018f-4875-9ab4-db23ae9536d3/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 11:07:53,588 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d701371-018f-4875-9ab4-db23ae9536d3/bin/uautomizer-tPACEb0tL8/mathsat -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 11:07:53,591 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d701371-018f-4875-9ab4-db23ae9536d3/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2022-11-16 11:07:53,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:07:53,685 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-16 11:07:53,688 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:07:53,749 INFO L321 Elim1Store]: treesize reduction 50, result has 23.1 percent of original size [2022-11-16 11:07:53,749 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 3 case distinctions, treesize of input 22 treesize of output 29 [2022-11-16 11:07:53,819 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-16 11:07:53,819 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 11:07:53,819 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 11:07:53,820 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1678438625] [2022-11-16 11:07:53,820 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1678438625] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:07:53,820 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:07:53,820 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-16 11:07:53,821 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [295484884] [2022-11-16 11:07:53,821 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:07:53,821 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 11:07:53,822 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 11:07:53,822 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 11:07:53,822 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:07:53,823 INFO L87 Difference]: Start difference. First operand 224 states and 566 transitions. Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:07:54,050 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:07:54,050 INFO L93 Difference]: Finished difference Result 223 states and 562 transitions. [2022-11-16 11:07:54,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 11:07:54,051 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2022-11-16 11:07:54,051 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:07:54,053 INFO L225 Difference]: With dead ends: 223 [2022-11-16 11:07:54,053 INFO L226 Difference]: Without dead ends: 223 [2022-11-16 11:07:54,054 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:07:54,055 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 0 mSDsluCounter, 2 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 4 SdHoareTripleChecker+Invalid, 55 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 29 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-16 11:07:54,055 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 4 Invalid, 55 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 26 Invalid, 0 Unknown, 29 Unchecked, 0.2s Time] [2022-11-16 11:07:54,057 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 223 states. [2022-11-16 11:07:54,063 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 223 to 223. [2022-11-16 11:07:54,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 223 states, 149 states have (on average 3.771812080536913) internal successors, (562), 222 states have internal predecessors, (562), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:07:54,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 223 states to 223 states and 562 transitions. [2022-11-16 11:07:54,066 INFO L78 Accepts]: Start accepts. Automaton has 223 states and 562 transitions. Word has length 3 [2022-11-16 11:07:54,066 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:07:54,066 INFO L495 AbstractCegarLoop]: Abstraction has 223 states and 562 transitions. [2022-11-16 11:07:54,067 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:07:54,067 INFO L276 IsEmpty]: Start isEmpty. Operand 223 states and 562 transitions. [2022-11-16 11:07:54,067 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2022-11-16 11:07:54,067 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:07:54,067 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2022-11-16 11:07:54,086 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d701371-018f-4875-9ab4-db23ae9536d3/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2022-11-16 11:07:54,280 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d701371-018f-4875-9ab4-db23ae9536d3/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 11:07:54,281 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 31 more)] === [2022-11-16 11:07:54,281 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:07:54,281 INFO L85 PathProgramCache]: Analyzing trace with hash 883105, now seen corresponding path program 1 times [2022-11-16 11:07:54,281 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 11:07:54,282 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1386194322] [2022-11-16 11:07:54,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:07:54,282 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 11:07:54,282 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d701371-018f-4875-9ab4-db23ae9536d3/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 11:07:54,283 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d701371-018f-4875-9ab4-db23ae9536d3/bin/uautomizer-tPACEb0tL8/mathsat -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 11:07:54,288 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d701371-018f-4875-9ab4-db23ae9536d3/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2022-11-16 11:07:54,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:07:54,380 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 14 conjunts are in the unsatisfiable core [2022-11-16 11:07:54,382 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:07:54,448 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:07:54,510 INFO L321 Elim1Store]: treesize reduction 24, result has 44.2 percent of original size [2022-11-16 11:07:54,511 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 14 treesize of output 26 [2022-11-16 11:07:54,524 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2022-11-16 11:07:54,652 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-16 11:07:54,652 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 11:07:54,652 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 11:07:54,652 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1386194322] [2022-11-16 11:07:54,653 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1386194322] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:07:54,653 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:07:54,653 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-16 11:07:54,653 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1222762064] [2022-11-16 11:07:54,653 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:07:54,654 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 11:07:54,654 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 11:07:54,654 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 11:07:54,654 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:07:54,654 INFO L87 Difference]: Start difference. First operand 223 states and 562 transitions. Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:07:54,863 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:07:54,863 INFO L93 Difference]: Finished difference Result 222 states and 558 transitions. [2022-11-16 11:07:54,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 11:07:54,864 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2022-11-16 11:07:54,864 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:07:54,866 INFO L225 Difference]: With dead ends: 222 [2022-11-16 11:07:54,866 INFO L226 Difference]: Without dead ends: 222 [2022-11-16 11:07:54,866 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:07:54,867 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 0 mSDsluCounter, 2 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 4 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 28 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-16 11:07:54,868 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 4 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 26 Invalid, 0 Unknown, 28 Unchecked, 0.2s Time] [2022-11-16 11:07:54,869 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 222 states. [2022-11-16 11:07:54,875 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 222 to 222. [2022-11-16 11:07:54,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 222 states, 149 states have (on average 3.7449664429530203) internal successors, (558), 221 states have internal predecessors, (558), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:07:54,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 222 states to 222 states and 558 transitions. [2022-11-16 11:07:54,878 INFO L78 Accepts]: Start accepts. Automaton has 222 states and 558 transitions. Word has length 3 [2022-11-16 11:07:54,878 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:07:54,878 INFO L495 AbstractCegarLoop]: Abstraction has 222 states and 558 transitions. [2022-11-16 11:07:54,879 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:07:54,879 INFO L276 IsEmpty]: Start isEmpty. Operand 222 states and 558 transitions. [2022-11-16 11:07:54,879 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-11-16 11:07:54,880 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:07:54,880 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-11-16 11:07:54,895 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d701371-018f-4875-9ab4-db23ae9536d3/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2022-11-16 11:07:55,093 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d701371-018f-4875-9ab4-db23ae9536d3/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 11:07:55,094 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 31 more)] === [2022-11-16 11:07:55,094 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:07:55,094 INFO L85 PathProgramCache]: Analyzing trace with hash 848681386, now seen corresponding path program 1 times [2022-11-16 11:07:55,094 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 11:07:55,095 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1126737970] [2022-11-16 11:07:55,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:07:55,095 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 11:07:55,095 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d701371-018f-4875-9ab4-db23ae9536d3/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 11:07:55,096 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d701371-018f-4875-9ab4-db23ae9536d3/bin/uautomizer-tPACEb0tL8/mathsat -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 11:07:55,109 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d701371-018f-4875-9ab4-db23ae9536d3/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2022-11-16 11:07:55,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:07:55,215 INFO L263 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 15 conjunts are in the unsatisfiable core [2022-11-16 11:07:55,216 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:07:55,309 INFO L321 Elim1Store]: treesize reduction 37, result has 37.3 percent of original size [2022-11-16 11:07:55,310 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 14 treesize of output 29 [2022-11-16 11:07:55,589 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:07:55,589 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:07:55,882 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:07:55,883 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 11:07:55,883 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1126737970] [2022-11-16 11:07:55,883 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1126737970] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 11:07:55,883 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-16 11:07:55,883 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 6 [2022-11-16 11:07:55,883 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1109373268] [2022-11-16 11:07:55,884 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-16 11:07:55,884 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-16 11:07:55,884 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 11:07:55,884 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-16 11:07:55,885 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2022-11-16 11:07:55,885 INFO L87 Difference]: Start difference. First operand 222 states and 558 transitions. Second operand has 8 states, 7 states have (on average 1.4285714285714286) internal successors, (10), 7 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:07:56,152 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:07:56,152 INFO L93 Difference]: Finished difference Result 228 states and 578 transitions. [2022-11-16 11:07:56,153 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-16 11:07:56,153 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 1.4285714285714286) internal successors, (10), 7 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2022-11-16 11:07:56,153 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:07:56,155 INFO L225 Difference]: With dead ends: 228 [2022-11-16 11:07:56,155 INFO L226 Difference]: Without dead ends: 228 [2022-11-16 11:07:56,155 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2022-11-16 11:07:56,156 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 3 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 12 SdHoareTripleChecker+Invalid, 57 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 30 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-16 11:07:56,157 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 12 Invalid, 57 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 27 Invalid, 0 Unknown, 30 Unchecked, 0.3s Time] [2022-11-16 11:07:56,158 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 228 states. [2022-11-16 11:07:56,164 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 228 to 225. [2022-11-16 11:07:56,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 225 states, 152 states have (on average 3.736842105263158) internal successors, (568), 224 states have internal predecessors, (568), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:07:56,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 225 states to 225 states and 568 transitions. [2022-11-16 11:07:56,166 INFO L78 Accepts]: Start accepts. Automaton has 225 states and 568 transitions. Word has length 5 [2022-11-16 11:07:56,167 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:07:56,167 INFO L495 AbstractCegarLoop]: Abstraction has 225 states and 568 transitions. [2022-11-16 11:07:56,167 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 1.4285714285714286) internal successors, (10), 7 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:07:56,167 INFO L276 IsEmpty]: Start isEmpty. Operand 225 states and 568 transitions. [2022-11-16 11:07:56,168 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-11-16 11:07:56,168 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:07:56,168 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-11-16 11:07:56,188 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d701371-018f-4875-9ab4-db23ae9536d3/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2022-11-16 11:07:56,378 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d701371-018f-4875-9ab4-db23ae9536d3/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 11:07:56,378 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 31 more)] === [2022-11-16 11:07:56,379 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:07:56,379 INFO L85 PathProgramCache]: Analyzing trace with hash 848681387, now seen corresponding path program 1 times [2022-11-16 11:07:56,379 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 11:07:56,379 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1723410764] [2022-11-16 11:07:56,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:07:56,380 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 11:07:56,380 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d701371-018f-4875-9ab4-db23ae9536d3/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 11:07:56,383 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d701371-018f-4875-9ab4-db23ae9536d3/bin/uautomizer-tPACEb0tL8/mathsat -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 11:07:56,428 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d701371-018f-4875-9ab4-db23ae9536d3/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2022-11-16 11:07:56,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:07:56,503 INFO L263 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-16 11:07:56,505 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:07:56,552 INFO L321 Elim1Store]: treesize reduction 50, result has 23.1 percent of original size [2022-11-16 11:07:56,552 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 12 treesize of output 22 [2022-11-16 11:07:56,591 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-16 11:07:56,592 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 11:07:56,592 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 11:07:56,592 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1723410764] [2022-11-16 11:07:56,592 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1723410764] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:07:56,592 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:07:56,592 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-16 11:07:56,592 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [958034856] [2022-11-16 11:07:56,593 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:07:56,593 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 11:07:56,593 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 11:07:56,593 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 11:07:56,594 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:07:56,594 INFO L87 Difference]: Start difference. First operand 225 states and 568 transitions. Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:07:56,831 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:07:56,831 INFO L93 Difference]: Finished difference Result 212 states and 540 transitions. [2022-11-16 11:07:56,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 11:07:56,832 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2022-11-16 11:07:56,832 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:07:56,833 INFO L225 Difference]: With dead ends: 212 [2022-11-16 11:07:56,834 INFO L226 Difference]: Without dead ends: 212 [2022-11-16 11:07:56,834 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:07:56,835 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 25 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 2 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-16 11:07:56,835 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 2 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-16 11:07:56,836 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 212 states. [2022-11-16 11:07:56,842 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 212 to 212. [2022-11-16 11:07:56,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 212 states, 148 states have (on average 3.6486486486486487) internal successors, (540), 211 states have internal predecessors, (540), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:07:56,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 212 states to 212 states and 540 transitions. [2022-11-16 11:07:56,844 INFO L78 Accepts]: Start accepts. Automaton has 212 states and 540 transitions. Word has length 5 [2022-11-16 11:07:56,844 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:07:56,844 INFO L495 AbstractCegarLoop]: Abstraction has 212 states and 540 transitions. [2022-11-16 11:07:56,844 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:07:56,845 INFO L276 IsEmpty]: Start isEmpty. Operand 212 states and 540 transitions. [2022-11-16 11:07:56,845 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-11-16 11:07:56,845 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:07:56,845 INFO L195 NwaCegarLoop]: trace histogram [4, 1, 1] [2022-11-16 11:07:56,861 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d701371-018f-4875-9ab4-db23ae9536d3/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2022-11-16 11:07:57,046 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d701371-018f-4875-9ab4-db23ae9536d3/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 11:07:57,046 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 31 more)] === [2022-11-16 11:07:57,047 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:07:57,047 INFO L85 PathProgramCache]: Analyzing trace with hash 537522935, now seen corresponding path program 2 times [2022-11-16 11:07:57,047 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 11:07:57,047 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1849360773] [2022-11-16 11:07:57,047 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-16 11:07:57,048 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 11:07:57,048 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d701371-018f-4875-9ab4-db23ae9536d3/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 11:07:57,049 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d701371-018f-4875-9ab4-db23ae9536d3/bin/uautomizer-tPACEb0tL8/mathsat -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 11:07:57,050 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d701371-018f-4875-9ab4-db23ae9536d3/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2022-11-16 11:07:57,149 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-16 11:07:57,149 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 11:07:57,155 INFO L263 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 16 conjunts are in the unsatisfiable core [2022-11-16 11:07:57,157 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:07:57,259 INFO L321 Elim1Store]: treesize reduction 37, result has 37.3 percent of original size [2022-11-16 11:07:57,259 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 2 case distinctions, treesize of input 14 treesize of output 29 [2022-11-16 11:07:57,523 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:07:57,524 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:07:58,495 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:07:58,495 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 11:07:58,496 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1849360773] [2022-11-16 11:07:58,496 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1849360773] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 11:07:58,496 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-16 11:07:58,496 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2022-11-16 11:07:58,497 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [443643658] [2022-11-16 11:07:58,497 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-16 11:07:58,497 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-16 11:07:58,497 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 11:07:58,498 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-16 11:07:58,498 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2022-11-16 11:07:58,498 INFO L87 Difference]: Start difference. First operand 212 states and 540 transitions. Second operand has 12 states, 11 states have (on average 1.0909090909090908) internal successors, (12), 11 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:08:04,383 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:08:04,383 INFO L93 Difference]: Finished difference Result 1831 states and 4718 transitions. [2022-11-16 11:08:04,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-16 11:08:04,385 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 1.0909090909090908) internal successors, (12), 11 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2022-11-16 11:08:04,385 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:08:04,397 INFO L225 Difference]: With dead ends: 1831 [2022-11-16 11:08:04,397 INFO L226 Difference]: Without dead ends: 1831 [2022-11-16 11:08:04,397 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=94, Invalid=146, Unknown=0, NotChecked=0, Total=240 [2022-11-16 11:08:04,398 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 702 mSDsluCounter, 40 mSDsCounter, 0 mSdLazyCounter, 619 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 702 SdHoareTripleChecker+Valid, 48 SdHoareTripleChecker+Invalid, 629 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 619 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.2s IncrementalHoareTripleChecker+Time [2022-11-16 11:08:04,399 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [702 Valid, 48 Invalid, 629 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 619 Invalid, 0 Unknown, 0 Unchecked, 4.2s Time] [2022-11-16 11:08:04,403 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1831 states. [2022-11-16 11:08:04,423 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1831 to 218. [2022-11-16 11:08:04,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 218 states, 154 states have (on average 3.5844155844155843) internal successors, (552), 217 states have internal predecessors, (552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:08:04,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218 states to 218 states and 552 transitions. [2022-11-16 11:08:04,425 INFO L78 Accepts]: Start accepts. Automaton has 218 states and 552 transitions. Word has length 6 [2022-11-16 11:08:04,425 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:08:04,426 INFO L495 AbstractCegarLoop]: Abstraction has 218 states and 552 transitions. [2022-11-16 11:08:04,426 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 1.0909090909090908) internal successors, (12), 11 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:08:04,426 INFO L276 IsEmpty]: Start isEmpty. Operand 218 states and 552 transitions. [2022-11-16 11:08:04,427 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-11-16 11:08:04,427 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:08:04,427 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-11-16 11:08:04,440 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d701371-018f-4875-9ab4-db23ae9536d3/bin/uautomizer-tPACEb0tL8/mathsat -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)] Ended with exit code 0 [2022-11-16 11:08:04,640 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d701371-018f-4875-9ab4-db23ae9536d3/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 11:08:04,641 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 31 more)] === [2022-11-16 11:08:04,641 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:08:04,641 INFO L85 PathProgramCache]: Analyzing trace with hash 539311810, now seen corresponding path program 1 times [2022-11-16 11:08:04,641 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 11:08:04,641 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [663436516] [2022-11-16 11:08:04,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:08:04,642 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 11:08:04,642 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d701371-018f-4875-9ab4-db23ae9536d3/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 11:08:04,643 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d701371-018f-4875-9ab4-db23ae9536d3/bin/uautomizer-tPACEb0tL8/mathsat -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 11:08:04,644 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d701371-018f-4875-9ab4-db23ae9536d3/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2022-11-16 11:08:04,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:08:04,737 INFO L263 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-16 11:08:04,738 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:08:04,841 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:08:04,841 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:08:05,047 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 35 treesize of output 31 [2022-11-16 11:08:05,162 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:08:05,162 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 11:08:05,162 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [663436516] [2022-11-16 11:08:05,162 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [663436516] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 11:08:05,162 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-16 11:08:05,162 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 6 [2022-11-16 11:08:05,162 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [832547063] [2022-11-16 11:08:05,163 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-16 11:08:05,163 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-16 11:08:05,163 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 11:08:05,164 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-16 11:08:05,164 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-11-16 11:08:05,164 INFO L87 Difference]: Start difference. First operand 218 states and 552 transitions. Second operand has 8 states, 7 states have (on average 1.7142857142857142) internal successors, (12), 7 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:08:06,461 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:08:06,462 INFO L93 Difference]: Finished difference Result 514 states and 1304 transitions. [2022-11-16 11:08:06,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-16 11:08:06,462 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 1.7142857142857142) internal successors, (12), 7 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2022-11-16 11:08:06,463 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:08:06,465 INFO L225 Difference]: With dead ends: 514 [2022-11-16 11:08:06,466 INFO L226 Difference]: Without dead ends: 514 [2022-11-16 11:08:06,466 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2022-11-16 11:08:06,467 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 156 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 150 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 156 SdHoareTripleChecker+Valid, 9 SdHoareTripleChecker+Invalid, 152 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 150 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-11-16 11:08:06,467 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [156 Valid, 9 Invalid, 152 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 150 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-11-16 11:08:06,469 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 514 states. [2022-11-16 11:08:06,478 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 514 to 253. [2022-11-16 11:08:06,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 253 states, 189 states have (on average 3.7830687830687832) internal successors, (715), 252 states have internal predecessors, (715), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:08:06,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 253 states to 253 states and 715 transitions. [2022-11-16 11:08:06,481 INFO L78 Accepts]: Start accepts. Automaton has 253 states and 715 transitions. Word has length 6 [2022-11-16 11:08:06,481 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:08:06,482 INFO L495 AbstractCegarLoop]: Abstraction has 253 states and 715 transitions. [2022-11-16 11:08:06,482 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 1.7142857142857142) internal successors, (12), 7 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:08:06,482 INFO L276 IsEmpty]: Start isEmpty. Operand 253 states and 715 transitions. [2022-11-16 11:08:06,482 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-11-16 11:08:06,483 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:08:06,483 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-11-16 11:08:06,497 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d701371-018f-4875-9ab4-db23ae9536d3/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2022-11-16 11:08:06,696 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d701371-018f-4875-9ab4-db23ae9536d3/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 11:08:06,697 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 31 more)] === [2022-11-16 11:08:06,697 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:08:06,697 INFO L85 PathProgramCache]: Analyzing trace with hash 539311811, now seen corresponding path program 1 times [2022-11-16 11:08:06,698 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 11:08:06,698 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [861829057] [2022-11-16 11:08:06,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:08:06,698 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 11:08:06,699 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d701371-018f-4875-9ab4-db23ae9536d3/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 11:08:06,700 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d701371-018f-4875-9ab4-db23ae9536d3/bin/uautomizer-tPACEb0tL8/mathsat -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 11:08:06,702 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d701371-018f-4875-9ab4-db23ae9536d3/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2022-11-16 11:08:06,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:08:06,782 INFO L263 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-16 11:08:06,784 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:08:06,840 INFO L321 Elim1Store]: treesize reduction 39, result has 40.0 percent of original size [2022-11-16 11:08:06,841 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 12 treesize of output 33 [2022-11-16 11:08:06,872 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-16 11:08:06,872 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 11:08:06,872 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 11:08:06,872 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [861829057] [2022-11-16 11:08:06,872 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [861829057] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:08:06,873 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:08:06,873 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-16 11:08:06,873 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [973990736] [2022-11-16 11:08:06,873 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:08:06,873 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 11:08:06,874 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 11:08:06,874 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 11:08:06,874 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 11:08:06,875 INFO L87 Difference]: Start difference. First operand 253 states and 715 transitions. Second operand has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:08:07,129 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:08:07,129 INFO L93 Difference]: Finished difference Result 195 states and 520 transitions. [2022-11-16 11:08:07,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 11:08:07,130 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2022-11-16 11:08:07,130 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:08:07,132 INFO L225 Difference]: With dead ends: 195 [2022-11-16 11:08:07,132 INFO L226 Difference]: Without dead ends: 195 [2022-11-16 11:08:07,132 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-16 11:08:07,133 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 46 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 2 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-16 11:08:07,134 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [46 Valid, 2 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-16 11:08:07,135 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 195 states. [2022-11-16 11:08:07,140 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 195 to 195. [2022-11-16 11:08:07,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 195 states, 157 states have (on average 3.3121019108280256) internal successors, (520), 194 states have internal predecessors, (520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:08:07,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 195 states to 195 states and 520 transitions. [2022-11-16 11:08:07,142 INFO L78 Accepts]: Start accepts. Automaton has 195 states and 520 transitions. Word has length 6 [2022-11-16 11:08:07,143 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:08:07,143 INFO L495 AbstractCegarLoop]: Abstraction has 195 states and 520 transitions. [2022-11-16 11:08:07,143 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:08:07,143 INFO L276 IsEmpty]: Start isEmpty. Operand 195 states and 520 transitions. [2022-11-16 11:08:07,144 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-11-16 11:08:07,144 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:08:07,144 INFO L195 NwaCegarLoop]: trace histogram [3, 1, 1, 1, 1] [2022-11-16 11:08:07,164 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d701371-018f-4875-9ab4-db23ae9536d3/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2022-11-16 11:08:07,358 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d701371-018f-4875-9ab4-db23ae9536d3/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 11:08:07,358 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 31 more)] === [2022-11-16 11:08:07,358 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:08:07,359 INFO L85 PathProgramCache]: Analyzing trace with hash -516595830, now seen corresponding path program 2 times [2022-11-16 11:08:07,359 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 11:08:07,359 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1502935197] [2022-11-16 11:08:07,359 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-16 11:08:07,359 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 11:08:07,359 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d701371-018f-4875-9ab4-db23ae9536d3/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 11:08:07,360 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d701371-018f-4875-9ab4-db23ae9536d3/bin/uautomizer-tPACEb0tL8/mathsat -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 11:08:07,361 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d701371-018f-4875-9ab4-db23ae9536d3/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2022-11-16 11:08:07,455 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-16 11:08:07,456 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 11:08:07,458 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-16 11:08:07,460 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:08:07,488 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:08:07,529 INFO L321 Elim1Store]: treesize reduction 24, result has 33.3 percent of original size [2022-11-16 11:08:07,529 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 1 case distinctions, treesize of input 12 treesize of output 23 [2022-11-16 11:08:07,546 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 26 treesize of output 24 [2022-11-16 11:08:07,610 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-16 11:08:07,611 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 11:08:07,611 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 11:08:07,611 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1502935197] [2022-11-16 11:08:07,612 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1502935197] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:08:07,612 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:08:07,612 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-16 11:08:07,612 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1991862182] [2022-11-16 11:08:07,612 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:08:07,613 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 11:08:07,613 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 11:08:07,613 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 11:08:07,614 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:08:07,614 INFO L87 Difference]: Start difference. First operand 195 states and 520 transitions. Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:08:07,833 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:08:07,833 INFO L93 Difference]: Finished difference Result 183 states and 495 transitions. [2022-11-16 11:08:07,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 11:08:07,834 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2022-11-16 11:08:07,834 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:08:07,836 INFO L225 Difference]: With dead ends: 183 [2022-11-16 11:08:07,836 INFO L226 Difference]: Without dead ends: 183 [2022-11-16 11:08:07,836 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:08:07,837 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 21 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 2 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-16 11:08:07,837 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 2 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-16 11:08:07,838 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183 states. [2022-11-16 11:08:07,843 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183 to 180. [2022-11-16 11:08:07,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 180 states, 149 states have (on average 3.2818791946308723) internal successors, (489), 179 states have internal predecessors, (489), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:08:07,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 180 states to 180 states and 489 transitions. [2022-11-16 11:08:07,845 INFO L78 Accepts]: Start accepts. Automaton has 180 states and 489 transitions. Word has length 7 [2022-11-16 11:08:07,845 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:08:07,845 INFO L495 AbstractCegarLoop]: Abstraction has 180 states and 489 transitions. [2022-11-16 11:08:07,857 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:08:07,857 INFO L276 IsEmpty]: Start isEmpty. Operand 180 states and 489 transitions. [2022-11-16 11:08:07,858 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-11-16 11:08:07,858 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:08:07,858 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:08:07,872 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d701371-018f-4875-9ab4-db23ae9536d3/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Ended with exit code 0 [2022-11-16 11:08:08,072 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d701371-018f-4875-9ab4-db23ae9536d3/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 11:08:08,073 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 31 more)] === [2022-11-16 11:08:08,073 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:08:08,074 INFO L85 PathProgramCache]: Analyzing trace with hash -460955813, now seen corresponding path program 1 times [2022-11-16 11:08:08,074 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 11:08:08,074 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1941343963] [2022-11-16 11:08:08,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:08:08,074 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 11:08:08,075 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d701371-018f-4875-9ab4-db23ae9536d3/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 11:08:08,077 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d701371-018f-4875-9ab4-db23ae9536d3/bin/uautomizer-tPACEb0tL8/mathsat -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 11:08:08,096 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d701371-018f-4875-9ab4-db23ae9536d3/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2022-11-16 11:08:08,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:08:08,196 INFO L263 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-16 11:08:08,197 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:08:08,215 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-16 11:08:08,215 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 11:08:08,215 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 11:08:08,216 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1941343963] [2022-11-16 11:08:08,216 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1941343963] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:08:08,216 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:08:08,216 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-16 11:08:08,216 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1203274396] [2022-11-16 11:08:08,216 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:08:08,217 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 11:08:08,217 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 11:08:08,217 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 11:08:08,217 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:08:08,218 INFO L87 Difference]: Start difference. First operand 180 states and 489 transitions. Second operand has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:08:08,453 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:08:08,454 INFO L93 Difference]: Finished difference Result 145 states and 377 transitions. [2022-11-16 11:08:08,454 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 11:08:08,454 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2022-11-16 11:08:08,455 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:08:08,456 INFO L225 Difference]: With dead ends: 145 [2022-11-16 11:08:08,456 INFO L226 Difference]: Without dead ends: 145 [2022-11-16 11:08:08,456 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:08:08,457 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 19 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 2 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-16 11:08:08,458 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 2 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-16 11:08:08,459 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2022-11-16 11:08:08,462 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 145. [2022-11-16 11:08:08,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 145 states, 124 states have (on average 3.0403225806451615) internal successors, (377), 144 states have internal predecessors, (377), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:08:08,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 377 transitions. [2022-11-16 11:08:08,464 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 377 transitions. Word has length 7 [2022-11-16 11:08:08,465 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:08:08,465 INFO L495 AbstractCegarLoop]: Abstraction has 145 states and 377 transitions. [2022-11-16 11:08:08,465 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:08:08,465 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 377 transitions. [2022-11-16 11:08:08,466 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-11-16 11:08:08,466 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:08:08,466 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:08:08,481 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d701371-018f-4875-9ab4-db23ae9536d3/bin/uautomizer-tPACEb0tL8/mathsat -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)] Ended with exit code 0 [2022-11-16 11:08:08,681 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d701371-018f-4875-9ab4-db23ae9536d3/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 11:08:08,681 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 31 more)] === [2022-11-16 11:08:08,681 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:08:08,682 INFO L85 PathProgramCache]: Analyzing trace with hash -460955812, now seen corresponding path program 1 times [2022-11-16 11:08:08,682 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 11:08:08,682 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [461639864] [2022-11-16 11:08:08,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:08:08,682 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 11:08:08,682 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d701371-018f-4875-9ab4-db23ae9536d3/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 11:08:08,683 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d701371-018f-4875-9ab4-db23ae9536d3/bin/uautomizer-tPACEb0tL8/mathsat -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 11:08:08,685 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d701371-018f-4875-9ab4-db23ae9536d3/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2022-11-16 11:08:08,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:08:08,784 INFO L263 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-16 11:08:08,785 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:08:08,832 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-16 11:08:08,832 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 11:08:08,833 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 11:08:08,833 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [461639864] [2022-11-16 11:08:08,833 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [461639864] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:08:08,833 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:08:08,833 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-16 11:08:08,833 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2053571925] [2022-11-16 11:08:08,834 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:08:08,834 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 11:08:08,834 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 11:08:08,834 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 11:08:08,834 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-16 11:08:08,835 INFO L87 Difference]: Start difference. First operand 145 states and 377 transitions. Second operand has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:08:09,065 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:08:09,065 INFO L93 Difference]: Finished difference Result 110 states and 265 transitions. [2022-11-16 11:08:09,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 11:08:09,066 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2022-11-16 11:08:09,066 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:08:09,066 INFO L225 Difference]: With dead ends: 110 [2022-11-16 11:08:09,067 INFO L226 Difference]: Without dead ends: 110 [2022-11-16 11:08:09,067 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-16 11:08:09,067 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 39 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 2 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-16 11:08:09,068 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [39 Valid, 2 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-16 11:08:09,069 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2022-11-16 11:08:09,071 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 110. [2022-11-16 11:08:09,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 110 states, 99 states have (on average 2.676767676767677) internal successors, (265), 109 states have internal predecessors, (265), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:08:09,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 265 transitions. [2022-11-16 11:08:09,073 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 265 transitions. Word has length 7 [2022-11-16 11:08:09,073 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:08:09,074 INFO L495 AbstractCegarLoop]: Abstraction has 110 states and 265 transitions. [2022-11-16 11:08:09,074 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:08:09,074 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 265 transitions. [2022-11-16 11:08:09,075 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-11-16 11:08:09,075 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:08:09,075 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:08:09,086 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d701371-018f-4875-9ab4-db23ae9536d3/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2022-11-16 11:08:09,278 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d701371-018f-4875-9ab4-db23ae9536d3/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 11:08:09,278 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 31 more)] === [2022-11-16 11:08:09,279 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:08:09,279 INFO L85 PathProgramCache]: Analyzing trace with hash -461201867, now seen corresponding path program 1 times [2022-11-16 11:08:09,279 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 11:08:09,279 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1724450501] [2022-11-16 11:08:09,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:08:09,280 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 11:08:09,280 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d701371-018f-4875-9ab4-db23ae9536d3/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 11:08:09,281 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d701371-018f-4875-9ab4-db23ae9536d3/bin/uautomizer-tPACEb0tL8/mathsat -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 11:08:09,284 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d701371-018f-4875-9ab4-db23ae9536d3/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2022-11-16 11:08:09,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:08:09,413 INFO L263 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 21 conjunts are in the unsatisfiable core [2022-11-16 11:08:09,415 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:08:09,507 INFO L321 Elim1Store]: treesize reduction 37, result has 37.3 percent of original size [2022-11-16 11:08:09,508 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 14 treesize of output 29 [2022-11-16 11:08:09,711 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-16 11:08:09,711 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:08:10,625 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-16 11:08:10,626 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 11:08:10,626 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1724450501] [2022-11-16 11:08:10,626 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1724450501] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 11:08:10,626 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-16 11:08:10,626 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 6 [2022-11-16 11:08:10,626 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1281516332] [2022-11-16 11:08:10,626 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-16 11:08:10,627 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-16 11:08:10,627 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 11:08:10,627 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-16 11:08:10,627 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2022-11-16 11:08:10,627 INFO L87 Difference]: Start difference. First operand 110 states and 265 transitions. Second operand has 8 states, 7 states have (on average 2.0) internal successors, (14), 7 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:08:11,953 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:08:11,953 INFO L93 Difference]: Finished difference Result 192 states and 503 transitions. [2022-11-16 11:08:11,954 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-16 11:08:11,954 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.0) internal successors, (14), 7 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2022-11-16 11:08:11,954 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:08:11,956 INFO L225 Difference]: With dead ends: 192 [2022-11-16 11:08:11,956 INFO L226 Difference]: Without dead ends: 192 [2022-11-16 11:08:11,956 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2022-11-16 11:08:11,957 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 63 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 14 SdHoareTripleChecker+Invalid, 156 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 100 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-16 11:08:11,957 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [63 Valid, 14 Invalid, 156 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 52 Invalid, 0 Unknown, 100 Unchecked, 0.3s Time] [2022-11-16 11:08:11,958 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 192 states. [2022-11-16 11:08:11,963 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 192 to 156. [2022-11-16 11:08:11,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 156 states, 145 states have (on average 2.8758620689655174) internal successors, (417), 155 states have internal predecessors, (417), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:08:11,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156 states to 156 states and 417 transitions. [2022-11-16 11:08:11,965 INFO L78 Accepts]: Start accepts. Automaton has 156 states and 417 transitions. Word has length 7 [2022-11-16 11:08:11,965 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:08:11,965 INFO L495 AbstractCegarLoop]: Abstraction has 156 states and 417 transitions. [2022-11-16 11:08:11,965 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 2.0) internal successors, (14), 7 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:08:11,966 INFO L276 IsEmpty]: Start isEmpty. Operand 156 states and 417 transitions. [2022-11-16 11:08:11,966 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-11-16 11:08:11,967 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:08:11,967 INFO L195 NwaCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1] [2022-11-16 11:08:11,986 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d701371-018f-4875-9ab4-db23ae9536d3/bin/uautomizer-tPACEb0tL8/mathsat -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)] Ended with exit code 0 [2022-11-16 11:08:12,180 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d701371-018f-4875-9ab4-db23ae9536d3/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 11:08:12,181 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 31 more)] === [2022-11-16 11:08:12,181 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:08:12,181 INFO L85 PathProgramCache]: Analyzing trace with hash 1767386133, now seen corresponding path program 2 times [2022-11-16 11:08:12,181 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 11:08:12,182 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1715026003] [2022-11-16 11:08:12,182 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-16 11:08:12,182 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 11:08:12,182 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d701371-018f-4875-9ab4-db23ae9536d3/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 11:08:12,183 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d701371-018f-4875-9ab4-db23ae9536d3/bin/uautomizer-tPACEb0tL8/mathsat -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 11:08:12,186 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d701371-018f-4875-9ab4-db23ae9536d3/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2022-11-16 11:08:12,280 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-16 11:08:12,280 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 11:08:12,283 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-16 11:08:12,284 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:08:12,387 INFO L321 Elim1Store]: treesize reduction 37, result has 37.3 percent of original size [2022-11-16 11:08:12,387 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 14 treesize of output 29 [2022-11-16 11:08:12,584 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-11-16 11:08:12,584 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 11:08:12,584 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 11:08:12,584 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1715026003] [2022-11-16 11:08:12,585 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1715026003] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:08:12,585 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:08:12,585 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-16 11:08:12,585 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1912360431] [2022-11-16 11:08:12,585 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:08:12,586 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 11:08:12,586 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 11:08:12,586 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 11:08:12,586 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 11:08:12,586 INFO L87 Difference]: Start difference. First operand 156 states and 417 transitions. Second operand has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:08:12,979 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:08:12,979 INFO L93 Difference]: Finished difference Result 100 states and 250 transitions. [2022-11-16 11:08:12,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 11:08:12,980 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2022-11-16 11:08:12,980 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:08:12,981 INFO L225 Difference]: With dead ends: 100 [2022-11-16 11:08:12,981 INFO L226 Difference]: Without dead ends: 100 [2022-11-16 11:08:12,981 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-16 11:08:12,982 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 27 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 2 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-16 11:08:12,982 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 2 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-16 11:08:12,983 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2022-11-16 11:08:12,984 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 46. [2022-11-16 11:08:12,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46 states, 44 states have (on average 2.159090909090909) internal successors, (95), 45 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:08:12,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 95 transitions. [2022-11-16 11:08:12,985 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 95 transitions. Word has length 9 [2022-11-16 11:08:12,985 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:08:12,986 INFO L495 AbstractCegarLoop]: Abstraction has 46 states and 95 transitions. [2022-11-16 11:08:12,986 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:08:12,987 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 95 transitions. [2022-11-16 11:08:12,990 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-11-16 11:08:12,990 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:08:12,990 INFO L195 NwaCegarLoop]: trace histogram [10, 1, 1] [2022-11-16 11:08:13,007 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d701371-018f-4875-9ab4-db23ae9536d3/bin/uautomizer-tPACEb0tL8/mathsat -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)] Ended with exit code 0 [2022-11-16 11:08:13,191 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d701371-018f-4875-9ab4-db23ae9536d3/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 11:08:13,191 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 31 more)] === [2022-11-16 11:08:13,192 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:08:13,192 INFO L85 PathProgramCache]: Analyzing trace with hash 1790999895, now seen corresponding path program 3 times [2022-11-16 11:08:13,192 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 11:08:13,192 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [59783406] [2022-11-16 11:08:13,192 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-16 11:08:13,192 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 11:08:13,193 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d701371-018f-4875-9ab4-db23ae9536d3/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 11:08:13,196 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d701371-018f-4875-9ab4-db23ae9536d3/bin/uautomizer-tPACEb0tL8/mathsat -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 11:08:13,198 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d701371-018f-4875-9ab4-db23ae9536d3/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2022-11-16 11:08:13,421 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2022-11-16 11:08:13,421 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 11:08:13,430 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 24 conjunts are in the unsatisfiable core [2022-11-16 11:08:13,433 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:08:13,533 INFO L321 Elim1Store]: treesize reduction 37, result has 37.3 percent of original size [2022-11-16 11:08:13,533 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 14 treesize of output 29 [2022-11-16 11:08:14,229 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:08:14,229 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:08:18,184 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:08:18,185 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 11:08:18,185 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [59783406] [2022-11-16 11:08:18,185 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [59783406] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 11:08:18,185 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-16 11:08:18,185 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 22 [2022-11-16 11:08:18,185 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1414223380] [2022-11-16 11:08:18,185 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-16 11:08:18,186 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-11-16 11:08:18,186 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 11:08:18,187 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-11-16 11:08:18,187 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=166, Invalid=386, Unknown=0, NotChecked=0, Total=552 [2022-11-16 11:08:18,187 INFO L87 Difference]: Start difference. First operand 46 states and 95 transitions. Second operand has 24 states, 23 states have (on average 1.0434782608695652) internal successors, (24), 23 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:08:41,310 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:08:41,310 INFO L93 Difference]: Finished difference Result 718 states and 1559 transitions. [2022-11-16 11:08:41,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-11-16 11:08:41,312 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 23 states have (on average 1.0434782608695652) internal successors, (24), 23 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2022-11-16 11:08:41,312 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:08:41,315 INFO L225 Difference]: With dead ends: 718 [2022-11-16 11:08:41,315 INFO L226 Difference]: Without dead ends: 718 [2022-11-16 11:08:41,316 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 18.4s TimeCoverageRelationStatistics Valid=406, Invalid=716, Unknown=0, NotChecked=0, Total=1122 [2022-11-16 11:08:41,316 INFO L413 NwaCegarLoop]: 20 mSDtfsCounter, 2115 mSDsluCounter, 220 mSDsCounter, 0 mSdLazyCounter, 1716 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2115 SdHoareTripleChecker+Valid, 240 SdHoareTripleChecker+Invalid, 1738 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 1716 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.4s IncrementalHoareTripleChecker+Time [2022-11-16 11:08:41,317 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2115 Valid, 240 Invalid, 1738 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 1716 Invalid, 0 Unknown, 0 Unchecked, 8.4s Time] [2022-11-16 11:08:41,319 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 718 states. [2022-11-16 11:08:41,324 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 718 to 58. [2022-11-16 11:08:41,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58 states, 56 states have (on average 2.125) internal successors, (119), 57 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:08:41,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 119 transitions. [2022-11-16 11:08:41,326 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 119 transitions. Word has length 12 [2022-11-16 11:08:41,326 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:08:41,326 INFO L495 AbstractCegarLoop]: Abstraction has 58 states and 119 transitions. [2022-11-16 11:08:41,326 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 23 states have (on average 1.0434782608695652) internal successors, (24), 23 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:08:41,327 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 119 transitions. [2022-11-16 11:08:41,327 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-11-16 11:08:41,327 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:08:41,328 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:08:41,348 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d701371-018f-4875-9ab4-db23ae9536d3/bin/uautomizer-tPACEb0tL8/mathsat -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 11:08:41,549 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d701371-018f-4875-9ab4-db23ae9536d3/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 11:08:41,549 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 31 more)] === [2022-11-16 11:08:41,549 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:08:41,549 INFO L85 PathProgramCache]: Analyzing trace with hash -435931430, now seen corresponding path program 1 times [2022-11-16 11:08:41,550 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 11:08:41,550 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2117743788] [2022-11-16 11:08:41,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:08:41,550 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 11:08:41,550 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d701371-018f-4875-9ab4-db23ae9536d3/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 11:08:41,551 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d701371-018f-4875-9ab4-db23ae9536d3/bin/uautomizer-tPACEb0tL8/mathsat -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 11:08:41,554 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d701371-018f-4875-9ab4-db23ae9536d3/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2022-11-16 11:08:41,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:08:41,689 INFO L263 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-16 11:08:41,691 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:08:41,771 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-16 11:08:41,772 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 11:08:41,772 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 11:08:41,772 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2117743788] [2022-11-16 11:08:41,772 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2117743788] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:08:41,772 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:08:41,772 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-16 11:08:41,774 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1033762436] [2022-11-16 11:08:41,774 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:08:41,775 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 11:08:41,775 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 11:08:41,775 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 11:08:41,775 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:08:41,776 INFO L87 Difference]: Start difference. First operand 58 states and 119 transitions. Second operand has 3 states, 2 states have (on average 7.5) internal successors, (15), 2 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:08:41,940 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:08:41,940 INFO L93 Difference]: Finished difference Result 85 states and 180 transitions. [2022-11-16 11:08:41,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 11:08:41,941 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 7.5) internal successors, (15), 2 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2022-11-16 11:08:41,941 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:08:41,942 INFO L225 Difference]: With dead ends: 85 [2022-11-16 11:08:41,942 INFO L226 Difference]: Without dead ends: 80 [2022-11-16 11:08:41,942 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:08:41,942 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 1 mSDsluCounter, 2 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 4 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-16 11:08:41,943 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 4 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-16 11:08:41,943 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2022-11-16 11:08:41,945 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 80. [2022-11-16 11:08:41,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80 states, 78 states have (on average 2.1794871794871793) internal successors, (170), 79 states have internal predecessors, (170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:08:41,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 170 transitions. [2022-11-16 11:08:41,947 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 170 transitions. Word has length 15 [2022-11-16 11:08:41,947 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:08:41,948 INFO L495 AbstractCegarLoop]: Abstraction has 80 states and 170 transitions. [2022-11-16 11:08:41,948 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 7.5) internal successors, (15), 2 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:08:41,948 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 170 transitions. [2022-11-16 11:08:41,949 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-11-16 11:08:41,949 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:08:41,949 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:08:41,964 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d701371-018f-4875-9ab4-db23ae9536d3/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (19)] Forceful destruction successful, exit code 0 [2022-11-16 11:08:42,160 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d701371-018f-4875-9ab4-db23ae9536d3/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 11:08:42,161 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 31 more)] === [2022-11-16 11:08:42,161 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:08:42,161 INFO L85 PathProgramCache]: Analyzing trace with hash 346079797, now seen corresponding path program 1 times [2022-11-16 11:08:42,161 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 11:08:42,162 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [473496113] [2022-11-16 11:08:42,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:08:42,162 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 11:08:42,162 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d701371-018f-4875-9ab4-db23ae9536d3/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 11:08:42,163 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d701371-018f-4875-9ab4-db23ae9536d3/bin/uautomizer-tPACEb0tL8/mathsat -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 11:08:42,175 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d701371-018f-4875-9ab4-db23ae9536d3/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2022-11-16 11:08:42,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:08:42,330 INFO L263 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-16 11:08:42,331 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:08:42,368 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-16 11:08:42,369 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 11:08:42,369 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 11:08:42,369 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [473496113] [2022-11-16 11:08:42,369 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [473496113] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:08:42,369 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:08:42,369 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-16 11:08:42,370 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1283658785] [2022-11-16 11:08:42,370 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:08:42,370 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 11:08:42,370 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 11:08:42,371 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 11:08:42,371 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-16 11:08:42,371 INFO L87 Difference]: Start difference. First operand 80 states and 170 transitions. Second operand has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:08:42,696 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:08:42,696 INFO L93 Difference]: Finished difference Result 84 states and 180 transitions. [2022-11-16 11:08:42,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 11:08:42,697 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2022-11-16 11:08:42,697 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:08:42,698 INFO L225 Difference]: With dead ends: 84 [2022-11-16 11:08:42,698 INFO L226 Difference]: Without dead ends: 84 [2022-11-16 11:08:42,698 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-16 11:08:42,699 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 13 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 68 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 8 SdHoareTripleChecker+Invalid, 69 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 68 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-16 11:08:42,700 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 8 Invalid, 69 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 68 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-16 11:08:42,700 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2022-11-16 11:08:42,703 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 80. [2022-11-16 11:08:42,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80 states, 78 states have (on average 2.230769230769231) internal successors, (174), 79 states have internal predecessors, (174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:08:42,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 174 transitions. [2022-11-16 11:08:42,704 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 174 transitions. Word has length 16 [2022-11-16 11:08:42,704 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:08:42,704 INFO L495 AbstractCegarLoop]: Abstraction has 80 states and 174 transitions. [2022-11-16 11:08:42,704 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:08:42,705 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 174 transitions. [2022-11-16 11:08:42,705 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-11-16 11:08:42,705 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:08:42,706 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:08:42,720 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d701371-018f-4875-9ab4-db23ae9536d3/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (20)] Forceful destruction successful, exit code 0 [2022-11-16 11:08:42,918 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d701371-018f-4875-9ab4-db23ae9536d3/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 11:08:42,918 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 31 more)] === [2022-11-16 11:08:42,919 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:08:42,919 INFO L85 PathProgramCache]: Analyzing trace with hash -1981705185, now seen corresponding path program 2 times [2022-11-16 11:08:42,919 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 11:08:42,920 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [435514718] [2022-11-16 11:08:42,920 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-16 11:08:42,920 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 11:08:42,920 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d701371-018f-4875-9ab4-db23ae9536d3/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 11:08:42,921 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d701371-018f-4875-9ab4-db23ae9536d3/bin/uautomizer-tPACEb0tL8/mathsat -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 11:08:42,923 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d701371-018f-4875-9ab4-db23ae9536d3/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2022-11-16 11:08:43,099 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-16 11:08:43,099 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 11:08:43,105 INFO L263 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-16 11:08:43,106 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:08:43,131 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-16 11:08:43,131 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 11:08:43,132 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 11:08:43,132 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [435514718] [2022-11-16 11:08:43,132 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [435514718] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:08:43,132 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:08:43,132 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-16 11:08:43,132 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [339986384] [2022-11-16 11:08:43,133 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:08:43,133 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 11:08:43,133 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 11:08:43,133 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 11:08:43,134 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 11:08:43,134 INFO L87 Difference]: Start difference. First operand 80 states and 174 transitions. Second operand has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:08:43,447 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:08:43,447 INFO L93 Difference]: Finished difference Result 94 states and 196 transitions. [2022-11-16 11:08:43,448 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 11:08:43,448 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2022-11-16 11:08:43,449 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:08:43,449 INFO L225 Difference]: With dead ends: 94 [2022-11-16 11:08:43,449 INFO L226 Difference]: Without dead ends: 84 [2022-11-16 11:08:43,449 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-16 11:08:43,450 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 20 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 64 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 8 SdHoareTripleChecker+Invalid, 64 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 64 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-16 11:08:43,450 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 8 Invalid, 64 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 64 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-16 11:08:43,451 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2022-11-16 11:08:43,453 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 76. [2022-11-16 11:08:43,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76 states, 74 states have (on average 2.27027027027027) internal successors, (168), 75 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:08:43,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 168 transitions. [2022-11-16 11:08:43,454 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 168 transitions. Word has length 16 [2022-11-16 11:08:43,454 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:08:43,455 INFO L495 AbstractCegarLoop]: Abstraction has 76 states and 168 transitions. [2022-11-16 11:08:43,455 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:08:43,455 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 168 transitions. [2022-11-16 11:08:43,456 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-11-16 11:08:43,456 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:08:43,456 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:08:43,469 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d701371-018f-4875-9ab4-db23ae9536d3/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (21)] Forceful destruction successful, exit code 0 [2022-11-16 11:08:43,662 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d701371-018f-4875-9ab4-db23ae9536d3/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 11:08:43,662 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 31 more)] === [2022-11-16 11:08:43,663 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:08:43,663 INFO L85 PathProgramCache]: Analyzing trace with hash 1103107371, now seen corresponding path program 1 times [2022-11-16 11:08:43,663 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 11:08:43,663 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1679608440] [2022-11-16 11:08:43,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:08:43,663 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 11:08:43,663 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d701371-018f-4875-9ab4-db23ae9536d3/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 11:08:43,664 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d701371-018f-4875-9ab4-db23ae9536d3/bin/uautomizer-tPACEb0tL8/mathsat -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 11:08:43,666 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d701371-018f-4875-9ab4-db23ae9536d3/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2022-11-16 11:08:43,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:08:43,782 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-16 11:08:43,783 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:08:43,819 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-16 11:08:43,820 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:08:43,885 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-16 11:08:43,885 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 11:08:43,885 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1679608440] [2022-11-16 11:08:43,885 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1679608440] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 11:08:43,886 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-16 11:08:43,886 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2022-11-16 11:08:43,886 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1800887696] [2022-11-16 11:08:43,886 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-16 11:08:43,887 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 11:08:43,887 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 11:08:43,887 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 11:08:43,887 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-11-16 11:08:43,888 INFO L87 Difference]: Start difference. First operand 76 states and 168 transitions. Second operand has 6 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 6 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:08:44,296 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:08:44,296 INFO L93 Difference]: Finished difference Result 94 states and 210 transitions. [2022-11-16 11:08:44,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-16 11:08:44,297 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 6 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2022-11-16 11:08:44,297 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:08:44,298 INFO L225 Difference]: With dead ends: 94 [2022-11-16 11:08:44,298 INFO L226 Difference]: Without dead ends: 94 [2022-11-16 11:08:44,298 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-11-16 11:08:44,299 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 38 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 63 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 9 SdHoareTripleChecker+Invalid, 86 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 63 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 22 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-16 11:08:44,299 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [38 Valid, 9 Invalid, 86 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 63 Invalid, 0 Unknown, 22 Unchecked, 0.4s Time] [2022-11-16 11:08:44,300 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2022-11-16 11:08:44,302 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 82. [2022-11-16 11:08:44,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 82 states, 80 states have (on average 2.2) internal successors, (176), 81 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:08:44,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 176 transitions. [2022-11-16 11:08:44,303 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 176 transitions. Word has length 16 [2022-11-16 11:08:44,304 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:08:44,304 INFO L495 AbstractCegarLoop]: Abstraction has 82 states and 176 transitions. [2022-11-16 11:08:44,304 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 6 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:08:44,304 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 176 transitions. [2022-11-16 11:08:44,305 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-11-16 11:08:44,305 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:08:44,305 INFO L195 NwaCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:08:44,319 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d701371-018f-4875-9ab4-db23ae9536d3/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (22)] Forceful destruction successful, exit code 0 [2022-11-16 11:08:44,518 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d701371-018f-4875-9ab4-db23ae9536d3/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 11:08:44,519 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 31 more)] === [2022-11-16 11:08:44,519 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:08:44,519 INFO L85 PathProgramCache]: Analyzing trace with hash -1178759413, now seen corresponding path program 2 times [2022-11-16 11:08:44,519 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 11:08:44,519 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [177353474] [2022-11-16 11:08:44,520 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-16 11:08:44,520 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 11:08:44,520 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d701371-018f-4875-9ab4-db23ae9536d3/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 11:08:44,521 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d701371-018f-4875-9ab4-db23ae9536d3/bin/uautomizer-tPACEb0tL8/mathsat -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 11:08:44,533 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d701371-018f-4875-9ab4-db23ae9536d3/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (23)] Waiting until timeout for monitored process [2022-11-16 11:08:44,683 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-16 11:08:44,683 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 11:08:44,689 INFO L263 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-16 11:08:44,690 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:08:44,776 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-16 11:08:44,776 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:08:45,024 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-16 11:08:45,024 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 11:08:45,025 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [177353474] [2022-11-16 11:08:45,025 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [177353474] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 11:08:45,025 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-16 11:08:45,025 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2022-11-16 11:08:45,026 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1506155800] [2022-11-16 11:08:45,026 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-16 11:08:45,026 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-16 11:08:45,026 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 11:08:45,026 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-16 11:08:45,027 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2022-11-16 11:08:45,027 INFO L87 Difference]: Start difference. First operand 82 states and 176 transitions. Second operand has 10 states, 10 states have (on average 2.3) internal successors, (23), 10 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:08:45,683 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:08:45,683 INFO L93 Difference]: Finished difference Result 94 states and 205 transitions. [2022-11-16 11:08:45,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-16 11:08:45,684 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.3) internal successors, (23), 10 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2022-11-16 11:08:45,684 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:08:45,685 INFO L225 Difference]: With dead ends: 94 [2022-11-16 11:08:45,685 INFO L226 Difference]: Without dead ends: 94 [2022-11-16 11:08:45,685 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2022-11-16 11:08:45,686 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 60 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 162 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 60 SdHoareTripleChecker+Valid, 23 SdHoareTripleChecker+Invalid, 202 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 162 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 35 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-16 11:08:45,686 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [60 Valid, 23 Invalid, 202 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 162 Invalid, 0 Unknown, 35 Unchecked, 0.6s Time] [2022-11-16 11:08:45,687 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2022-11-16 11:08:45,689 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 90. [2022-11-16 11:08:45,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 90 states, 88 states have (on average 2.215909090909091) internal successors, (195), 89 states have internal predecessors, (195), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:08:45,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 195 transitions. [2022-11-16 11:08:45,690 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 195 transitions. Word has length 18 [2022-11-16 11:08:45,690 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:08:45,691 INFO L495 AbstractCegarLoop]: Abstraction has 90 states and 195 transitions. [2022-11-16 11:08:45,691 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 2.3) internal successors, (23), 10 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:08:45,691 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 195 transitions. [2022-11-16 11:08:45,692 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-11-16 11:08:45,692 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:08:45,692 INFO L195 NwaCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:08:45,715 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d701371-018f-4875-9ab4-db23ae9536d3/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (23)] Forceful destruction successful, exit code 0 [2022-11-16 11:08:45,905 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d701371-018f-4875-9ab4-db23ae9536d3/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 11:08:45,905 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 31 more)] === [2022-11-16 11:08:45,905 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:08:45,905 INFO L85 PathProgramCache]: Analyzing trace with hash -449723622, now seen corresponding path program 3 times [2022-11-16 11:08:45,906 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 11:08:45,906 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1727456660] [2022-11-16 11:08:45,906 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-16 11:08:45,906 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 11:08:45,906 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d701371-018f-4875-9ab4-db23ae9536d3/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 11:08:45,907 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d701371-018f-4875-9ab4-db23ae9536d3/bin/uautomizer-tPACEb0tL8/mathsat -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 11:08:45,908 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d701371-018f-4875-9ab4-db23ae9536d3/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (24)] Waiting until timeout for monitored process [2022-11-16 11:08:46,058 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-11-16 11:08:46,059 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 11:08:46,064 INFO L263 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-16 11:08:46,065 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:08:46,143 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-11-16 11:08:46,143 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 11:08:46,143 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 11:08:46,143 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1727456660] [2022-11-16 11:08:46,144 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1727456660] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:08:46,144 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:08:46,144 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-16 11:08:46,144 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [992977607] [2022-11-16 11:08:46,144 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:08:46,144 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 11:08:46,145 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 11:08:46,145 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 11:08:46,145 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-16 11:08:46,145 INFO L87 Difference]: Start difference. First operand 90 states and 195 transitions. Second operand has 4 states, 4 states have (on average 4.25) internal successors, (17), 4 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:08:46,378 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:08:46,378 INFO L93 Difference]: Finished difference Result 150 states and 323 transitions. [2022-11-16 11:08:46,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 11:08:46,380 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.25) internal successors, (17), 4 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2022-11-16 11:08:46,380 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:08:46,380 INFO L225 Difference]: With dead ends: 150 [2022-11-16 11:08:46,380 INFO L226 Difference]: Without dead ends: 150 [2022-11-16 11:08:46,381 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-16 11:08:46,381 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 15 mSDsluCounter, 2 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 5 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-16 11:08:46,382 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 5 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-16 11:08:46,382 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150 states. [2022-11-16 11:08:46,386 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150 to 114. [2022-11-16 11:08:46,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 114 states, 112 states have (on average 2.392857142857143) internal successors, (268), 113 states have internal predecessors, (268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:08:46,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 268 transitions. [2022-11-16 11:08:46,387 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 268 transitions. Word has length 19 [2022-11-16 11:08:46,388 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:08:46,388 INFO L495 AbstractCegarLoop]: Abstraction has 114 states and 268 transitions. [2022-11-16 11:08:46,388 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.25) internal successors, (17), 4 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:08:46,388 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 268 transitions. [2022-11-16 11:08:46,389 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-11-16 11:08:46,389 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:08:46,389 INFO L195 NwaCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:08:46,404 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d701371-018f-4875-9ab4-db23ae9536d3/bin/uautomizer-tPACEb0tL8/mathsat -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)] Ended with exit code 0 [2022-11-16 11:08:46,604 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d701371-018f-4875-9ab4-db23ae9536d3/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 11:08:46,605 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 31 more)] === [2022-11-16 11:08:46,605 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:08:46,605 INFO L85 PathProgramCache]: Analyzing trace with hash 1630797696, now seen corresponding path program 4 times [2022-11-16 11:08:46,605 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 11:08:46,606 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1495753489] [2022-11-16 11:08:46,606 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-16 11:08:46,606 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 11:08:46,606 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d701371-018f-4875-9ab4-db23ae9536d3/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 11:08:46,607 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d701371-018f-4875-9ab4-db23ae9536d3/bin/uautomizer-tPACEb0tL8/mathsat -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 11:08:46,608 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d701371-018f-4875-9ab4-db23ae9536d3/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (25)] Waiting until timeout for monitored process [2022-11-16 11:08:46,765 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-16 11:08:46,765 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 11:08:46,771 INFO L263 TraceCheckSpWp]: Trace formula consists of 150 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-16 11:08:46,772 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:08:46,799 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-11-16 11:08:46,799 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 11:08:46,799 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 11:08:46,799 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1495753489] [2022-11-16 11:08:46,800 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1495753489] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:08:46,800 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:08:46,800 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-16 11:08:46,800 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [4649789] [2022-11-16 11:08:46,800 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:08:46,803 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 11:08:46,803 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 11:08:46,804 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 11:08:46,804 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 11:08:46,804 INFO L87 Difference]: Start difference. First operand 114 states and 268 transitions. Second operand has 4 states, 4 states have (on average 4.25) internal successors, (17), 4 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:08:47,093 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:08:47,094 INFO L93 Difference]: Finished difference Result 136 states and 294 transitions. [2022-11-16 11:08:47,095 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 11:08:47,095 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.25) internal successors, (17), 4 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2022-11-16 11:08:47,095 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:08:47,096 INFO L225 Difference]: With dead ends: 136 [2022-11-16 11:08:47,096 INFO L226 Difference]: Without dead ends: 126 [2022-11-16 11:08:47,097 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-16 11:08:47,097 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 14 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 8 SdHoareTripleChecker+Invalid, 62 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-16 11:08:47,098 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 8 Invalid, 62 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-16 11:08:47,098 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126 states. [2022-11-16 11:08:47,101 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126 to 110. [2022-11-16 11:08:47,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 110 states, 108 states have (on average 2.2777777777777777) internal successors, (246), 109 states have internal predecessors, (246), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:08:47,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 246 transitions. [2022-11-16 11:08:47,102 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 246 transitions. Word has length 19 [2022-11-16 11:08:47,102 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:08:47,102 INFO L495 AbstractCegarLoop]: Abstraction has 110 states and 246 transitions. [2022-11-16 11:08:47,103 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.25) internal successors, (17), 4 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:08:47,103 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 246 transitions. [2022-11-16 11:08:47,103 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-11-16 11:08:47,103 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:08:47,103 INFO L195 NwaCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:08:47,124 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d701371-018f-4875-9ab4-db23ae9536d3/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (25)] Forceful destruction successful, exit code 0 [2022-11-16 11:08:47,304 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d701371-018f-4875-9ab4-db23ae9536d3/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 11:08:47,304 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 31 more)] === [2022-11-16 11:08:47,304 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:08:47,305 INFO L85 PathProgramCache]: Analyzing trace with hash 2076202138, now seen corresponding path program 5 times [2022-11-16 11:08:47,305 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 11:08:47,309 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [213807047] [2022-11-16 11:08:47,309 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-11-16 11:08:47,310 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 11:08:47,310 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d701371-018f-4875-9ab4-db23ae9536d3/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 11:08:47,311 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d701371-018f-4875-9ab4-db23ae9536d3/bin/uautomizer-tPACEb0tL8/mathsat -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 11:08:47,315 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d701371-018f-4875-9ab4-db23ae9536d3/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (26)] Waiting until timeout for monitored process [2022-11-16 11:08:47,517 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2022-11-16 11:08:47,517 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 11:08:47,525 INFO L263 TraceCheckSpWp]: Trace formula consists of 150 conjuncts, 25 conjunts are in the unsatisfiable core [2022-11-16 11:08:47,527 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:08:48,222 INFO L321 Elim1Store]: treesize reduction 568, result has 4.2 percent of original size [2022-11-16 11:08:48,222 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 12 select indices, 12 select index equivalence classes, 6 disjoint index pairs (out of 66 index pairs), introduced 20 new quantified variables, introduced 66 case distinctions, treesize of input 838 treesize of output 152 [2022-11-16 11:08:48,429 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-16 11:08:48,429 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:08:50,346 INFO L321 Elim1Store]: treesize reduction 498, result has 21.3 percent of original size [2022-11-16 11:08:50,347 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 12 select indices, 12 select index equivalence classes, 0 disjoint index pairs (out of 66 index pairs), introduced 20 new quantified variables, introduced 66 case distinctions, treesize of input 955 treesize of output 282 [2022-11-16 11:09:24,655 WARN L233 SmtUtils]: Spent 7.95s on a formula simplification. DAG size of input: 663 DAG size of output: 17 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-16 11:09:24,972 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-16 11:09:24,972 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 11:09:24,972 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [213807047] [2022-11-16 11:09:24,973 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [213807047] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 11:09:24,973 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-16 11:09:24,973 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 12 [2022-11-16 11:09:24,973 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1905442458] [2022-11-16 11:09:24,973 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-16 11:09:24,973 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-16 11:09:24,974 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 11:09:24,974 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-16 11:09:24,974 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=138, Unknown=1, NotChecked=0, Total=182 [2022-11-16 11:09:24,974 INFO L87 Difference]: Start difference. First operand 110 states and 246 transitions. Second operand has 14 states, 13 states have (on average 2.923076923076923) internal successors, (38), 13 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:09:26,919 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:09:26,919 INFO L93 Difference]: Finished difference Result 249 states and 592 transitions. [2022-11-16 11:09:26,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-11-16 11:09:26,920 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 2.923076923076923) internal successors, (38), 13 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2022-11-16 11:09:26,920 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:09:26,922 INFO L225 Difference]: With dead ends: 249 [2022-11-16 11:09:26,922 INFO L226 Difference]: Without dead ends: 237 [2022-11-16 11:09:26,922 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 63 ImplicationChecksByTransitivity, 14.5s TimeCoverageRelationStatistics Valid=128, Invalid=377, Unknown=1, NotChecked=0, Total=506 [2022-11-16 11:09:26,923 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 34 mSDsluCounter, 45 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 49 SdHoareTripleChecker+Invalid, 146 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 89 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-16 11:09:26,923 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [34 Valid, 49 Invalid, 146 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 56 Invalid, 0 Unknown, 89 Unchecked, 0.3s Time] [2022-11-16 11:09:26,924 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 237 states. [2022-11-16 11:09:26,928 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 237 to 149. [2022-11-16 11:09:26,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 149 states, 147 states have (on average 2.3469387755102042) internal successors, (345), 148 states have internal predecessors, (345), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:09:26,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 345 transitions. [2022-11-16 11:09:26,929 INFO L78 Accepts]: Start accepts. Automaton has 149 states and 345 transitions. Word has length 19 [2022-11-16 11:09:26,930 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:09:26,930 INFO L495 AbstractCegarLoop]: Abstraction has 149 states and 345 transitions. [2022-11-16 11:09:26,930 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 2.923076923076923) internal successors, (38), 13 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:09:26,930 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states and 345 transitions. [2022-11-16 11:09:26,931 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-11-16 11:09:26,931 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:09:26,931 INFO L195 NwaCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:09:26,948 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d701371-018f-4875-9ab4-db23ae9536d3/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (26)] Ended with exit code 0 [2022-11-16 11:09:27,144 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d701371-018f-4875-9ab4-db23ae9536d3/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 11:09:27,144 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 31 more)] === [2022-11-16 11:09:27,144 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:09:27,144 INFO L85 PathProgramCache]: Analyzing trace with hash 1361164524, now seen corresponding path program 6 times [2022-11-16 11:09:27,145 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 11:09:27,145 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [639816235] [2022-11-16 11:09:27,145 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-11-16 11:09:27,145 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 11:09:27,145 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d701371-018f-4875-9ab4-db23ae9536d3/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 11:09:27,146 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d701371-018f-4875-9ab4-db23ae9536d3/bin/uautomizer-tPACEb0tL8/mathsat -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 11:09:27,147 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d701371-018f-4875-9ab4-db23ae9536d3/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (27)] Waiting until timeout for monitored process [2022-11-16 11:09:27,262 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2022-11-16 11:09:27,262 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 11:09:27,267 INFO L263 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-16 11:09:27,267 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:09:27,330 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-16 11:09:27,330 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 11:09:27,330 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 11:09:27,330 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [639816235] [2022-11-16 11:09:27,330 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [639816235] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:09:27,331 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:09:27,331 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-16 11:09:27,331 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [647655339] [2022-11-16 11:09:27,331 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:09:27,332 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 11:09:27,332 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 11:09:27,332 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 11:09:27,332 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-16 11:09:27,333 INFO L87 Difference]: Start difference. First operand 149 states and 345 transitions. Second operand has 4 states, 4 states have (on average 4.5) internal successors, (18), 4 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:09:27,614 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:09:27,614 INFO L93 Difference]: Finished difference Result 163 states and 376 transitions. [2022-11-16 11:09:27,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 11:09:27,615 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.5) internal successors, (18), 4 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2022-11-16 11:09:27,615 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:09:27,616 INFO L225 Difference]: With dead ends: 163 [2022-11-16 11:09:27,616 INFO L226 Difference]: Without dead ends: 163 [2022-11-16 11:09:27,617 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-16 11:09:27,617 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 12 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 58 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 8 SdHoareTripleChecker+Invalid, 59 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 58 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-16 11:09:27,618 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 8 Invalid, 59 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 58 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-16 11:09:27,618 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states. [2022-11-16 11:09:27,621 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 106. [2022-11-16 11:09:27,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 106 states, 104 states have (on average 2.25) internal successors, (234), 105 states have internal predecessors, (234), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:09:27,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 234 transitions. [2022-11-16 11:09:27,622 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 234 transitions. Word has length 19 [2022-11-16 11:09:27,622 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:09:27,622 INFO L495 AbstractCegarLoop]: Abstraction has 106 states and 234 transitions. [2022-11-16 11:09:27,622 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.5) internal successors, (18), 4 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:09:27,622 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 234 transitions. [2022-11-16 11:09:27,623 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-11-16 11:09:27,623 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:09:27,623 INFO L195 NwaCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:09:27,635 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d701371-018f-4875-9ab4-db23ae9536d3/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (27)] Forceful destruction successful, exit code 0 [2022-11-16 11:09:27,834 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d701371-018f-4875-9ab4-db23ae9536d3/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 11:09:27,835 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 31 more)] === [2022-11-16 11:09:27,835 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:09:27,835 INFO L85 PathProgramCache]: Analyzing trace with hash 294856949, now seen corresponding path program 1 times [2022-11-16 11:09:27,835 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 11:09:27,836 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [864528382] [2022-11-16 11:09:27,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:09:27,836 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 11:09:27,836 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d701371-018f-4875-9ab4-db23ae9536d3/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 11:09:27,837 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d701371-018f-4875-9ab4-db23ae9536d3/bin/uautomizer-tPACEb0tL8/mathsat -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 11:09:27,841 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d701371-018f-4875-9ab4-db23ae9536d3/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (28)] Waiting until timeout for monitored process [2022-11-16 11:09:27,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:09:28,008 INFO L263 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-16 11:09:28,010 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:09:32,329 INFO L321 Elim1Store]: treesize reduction 774, result has 21.4 percent of original size [2022-11-16 11:09:32,329 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 16 select indices, 16 select index equivalence classes, 0 disjoint index pairs (out of 120 index pairs), introduced 28 new quantified variables, introduced 120 case distinctions, treesize of input 5313 treesize of output 394 [2022-11-16 11:14:29,199 WARN L233 SmtUtils]: Spent 8.40s on a formula simplification that was a NOOP. DAG size: 2699 (called from [L 800] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2022-11-16 11:17:22,438 WARN L233 SmtUtils]: Spent 11.44s on a formula simplification. DAG size of input: 2696 DAG size of output: 2696 (called from [L 800] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify)