./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/weaver/parallel-parallel-sum-2.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 2329fc70 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_2e77b52e-939a-4ffa-8d80-54c08a5c9661/bin/utaipan-gh47qXpMRh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e77b52e-939a-4ffa-8d80-54c08a5c9661/bin/utaipan-gh47qXpMRh/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e77b52e-939a-4ffa-8d80-54c08a5c9661/bin/utaipan-gh47qXpMRh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e77b52e-939a-4ffa-8d80-54c08a5c9661/bin/utaipan-gh47qXpMRh/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/weaver/parallel-parallel-sum-2.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e77b52e-939a-4ffa-8d80-54c08a5c9661/bin/utaipan-gh47qXpMRh/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e77b52e-939a-4ffa-8d80-54c08a5c9661/bin/utaipan-gh47qXpMRh --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 Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash c0b350b5c7953744a22c8334b20c4dc8efdff09f1ecb36de8b1744d1e20f0260 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-2329fc7 [2022-12-14 10:21:17,546 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-14 10:21:17,548 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-14 10:21:17,568 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-14 10:21:17,568 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-14 10:21:17,569 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-14 10:21:17,571 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-14 10:21:17,573 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-14 10:21:17,574 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-14 10:21:17,575 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-14 10:21:17,576 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-14 10:21:17,577 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-14 10:21:17,578 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-14 10:21:17,579 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-14 10:21:17,580 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-14 10:21:17,581 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-14 10:21:17,582 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-14 10:21:17,583 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-14 10:21:17,584 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-14 10:21:17,586 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-14 10:21:17,587 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-14 10:21:17,589 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-14 10:21:17,590 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-14 10:21:17,591 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-14 10:21:17,594 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-14 10:21:17,595 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-14 10:21:17,595 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-14 10:21:17,596 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-14 10:21:17,596 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-14 10:21:17,597 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-14 10:21:17,597 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-14 10:21:17,598 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-14 10:21:17,599 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-14 10:21:17,600 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-14 10:21:17,601 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-14 10:21:17,601 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-14 10:21:17,601 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-14 10:21:17,602 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-14 10:21:17,602 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-14 10:21:17,603 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-14 10:21:17,603 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-14 10:21:17,604 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e77b52e-939a-4ffa-8d80-54c08a5c9661/bin/utaipan-gh47qXpMRh/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf [2022-12-14 10:21:17,626 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-14 10:21:17,626 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-14 10:21:17,626 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-14 10:21:17,627 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-14 10:21:17,627 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-14 10:21:17,627 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-14 10:21:17,628 INFO L138 SettingsManager]: * User list type=DISABLED [2022-12-14 10:21:17,628 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-12-14 10:21:17,628 INFO L138 SettingsManager]: * Explicit value domain=true [2022-12-14 10:21:17,628 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-12-14 10:21:17,628 INFO L138 SettingsManager]: * Octagon Domain=false [2022-12-14 10:21:17,628 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-12-14 10:21:17,629 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-12-14 10:21:17,629 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-12-14 10:21:17,629 INFO L138 SettingsManager]: * Interval Domain=false [2022-12-14 10:21:17,629 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-12-14 10:21:17,629 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-12-14 10:21:17,630 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-12-14 10:21:17,630 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-14 10:21:17,630 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-14 10:21:17,631 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-14 10:21:17,631 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-14 10:21:17,631 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-12-14 10:21:17,631 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-14 10:21:17,631 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-14 10:21:17,632 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-14 10:21:17,632 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-12-14 10:21:17,632 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-12-14 10:21:17,632 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-12-14 10:21:17,632 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-14 10:21:17,632 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-12-14 10:21:17,633 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-14 10:21:17,633 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-14 10:21:17,633 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-14 10:21:17,633 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-14 10:21:17,633 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 10:21:17,634 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-14 10:21:17,634 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-12-14 10:21:17,634 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-14 10:21:17,634 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-12-14 10:21:17,634 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-14 10:21:17,634 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-12-14 10:21:17,635 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_2e77b52e-939a-4ffa-8d80-54c08a5c9661/bin/utaipan-gh47qXpMRh/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e77b52e-939a-4ffa-8d80-54c08a5c9661/bin/utaipan-gh47qXpMRh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c0b350b5c7953744a22c8334b20c4dc8efdff09f1ecb36de8b1744d1e20f0260 [2022-12-14 10:21:17,793 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-14 10:21:17,812 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-14 10:21:17,814 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-14 10:21:17,815 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-14 10:21:17,815 INFO L275 PluginConnector]: CDTParser initialized [2022-12-14 10:21:17,816 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e77b52e-939a-4ffa-8d80-54c08a5c9661/bin/utaipan-gh47qXpMRh/../../sv-benchmarks/c/weaver/parallel-parallel-sum-2.wvr.c [2022-12-14 10:21:20,412 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-14 10:21:20,581 INFO L351 CDTParser]: Found 1 translation units. [2022-12-14 10:21:20,582 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e77b52e-939a-4ffa-8d80-54c08a5c9661/sv-benchmarks/c/weaver/parallel-parallel-sum-2.wvr.c [2022-12-14 10:21:20,589 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e77b52e-939a-4ffa-8d80-54c08a5c9661/bin/utaipan-gh47qXpMRh/data/87d0226ea/7b46201226f248a4a9756181d9fbbc18/FLAGad2e49787 [2022-12-14 10:21:20,599 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e77b52e-939a-4ffa-8d80-54c08a5c9661/bin/utaipan-gh47qXpMRh/data/87d0226ea/7b46201226f248a4a9756181d9fbbc18 [2022-12-14 10:21:20,601 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-14 10:21:20,603 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-14 10:21:20,604 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-14 10:21:20,604 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-14 10:21:20,607 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-14 10:21:20,608 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 10:21:20" (1/1) ... [2022-12-14 10:21:20,608 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1f6862d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:21:20, skipping insertion in model container [2022-12-14 10:21:20,608 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 10:21:20" (1/1) ... [2022-12-14 10:21:20,614 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-14 10:21:20,633 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-14 10:21:20,756 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-14 10:21:20,758 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-14 10:21:20,758 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-14 10:21:20,759 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-14 10:21:20,761 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-14 10:21:20,762 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-14 10:21:20,762 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-14 10:21:20,763 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-14 10:21:20,766 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-14 10:21:20,767 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-14 10:21:20,768 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-14 10:21:20,768 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-14 10:21:20,768 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-14 10:21:20,769 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-14 10:21:20,770 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-14 10:21:20,770 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-14 10:21:20,770 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-14 10:21:20,771 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-14 10:21:20,773 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-14 10:21:20,773 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-14 10:21:20,778 WARN L237 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_2e77b52e-939a-4ffa-8d80-54c08a5c9661/sv-benchmarks/c/weaver/parallel-parallel-sum-2.wvr.c[4225,4238] [2022-12-14 10:21:20,786 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 10:21:20,794 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) [2022-12-14 10:21:20,795 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@675c89ac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:21:20, skipping insertion in model container [2022-12-14 10:21:20,795 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-14 10:21:20,795 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2022-12-14 10:21:20,796 INFO L158 Benchmark]: Toolchain (without parser) took 193.00ms. Allocated memory is still 146.8MB. Free memory was 114.3MB in the beginning and 102.7MB in the end (delta: 11.6MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-12-14 10:21:20,797 INFO L158 Benchmark]: CDTParser took 0.12ms. Allocated memory is still 146.8MB. Free memory is still 88.8MB. There was no memory consumed. Max. memory is 16.1GB. [2022-12-14 10:21:20,797 INFO L158 Benchmark]: CACSL2BoogieTranslator took 190.91ms. Allocated memory is still 146.8MB. Free memory was 113.7MB in the beginning and 102.7MB in the end (delta: 11.0MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-12-14 10:21:20,798 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12ms. Allocated memory is still 146.8MB. Free memory is still 88.8MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 190.91ms. Allocated memory is still 146.8MB. Free memory was 113.7MB in the beginning and 102.7MB in the end (delta: 11.0MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 175]: Unsupported Syntax Found a cast between two array/pointer types of different sizes while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e77b52e-939a-4ffa-8d80-54c08a5c9661/bin/utaipan-gh47qXpMRh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e77b52e-939a-4ffa-8d80-54c08a5c9661/bin/utaipan-gh47qXpMRh/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e77b52e-939a-4ffa-8d80-54c08a5c9661/bin/utaipan-gh47qXpMRh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e77b52e-939a-4ffa-8d80-54c08a5c9661/bin/utaipan-gh47qXpMRh/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/weaver/parallel-parallel-sum-2.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e77b52e-939a-4ffa-8d80-54c08a5c9661/bin/utaipan-gh47qXpMRh/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e77b52e-939a-4ffa-8d80-54c08a5c9661/bin/utaipan-gh47qXpMRh --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 Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash c0b350b5c7953744a22c8334b20c4dc8efdff09f1ecb36de8b1744d1e20f0260 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-2329fc7 [2022-12-14 10:21:22,202 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-14 10:21:22,204 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-14 10:21:22,216 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-14 10:21:22,217 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-14 10:21:22,217 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-14 10:21:22,218 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-14 10:21:22,219 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-14 10:21:22,220 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-14 10:21:22,221 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-14 10:21:22,221 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-14 10:21:22,222 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-14 10:21:22,222 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-14 10:21:22,223 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-14 10:21:22,224 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-14 10:21:22,225 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-14 10:21:22,225 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-14 10:21:22,226 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-14 10:21:22,227 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-14 10:21:22,228 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-14 10:21:22,229 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-14 10:21:22,230 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-14 10:21:22,232 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-14 10:21:22,234 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-14 10:21:22,239 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-14 10:21:22,239 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-14 10:21:22,239 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-14 10:21:22,240 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-14 10:21:22,240 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-14 10:21:22,240 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-14 10:21:22,241 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-14 10:21:22,241 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-14 10:21:22,242 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-14 10:21:22,242 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-14 10:21:22,243 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-14 10:21:22,243 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-14 10:21:22,243 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-14 10:21:22,243 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-14 10:21:22,244 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-14 10:21:22,244 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-14 10:21:22,245 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-14 10:21:22,246 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e77b52e-939a-4ffa-8d80-54c08a5c9661/bin/utaipan-gh47qXpMRh/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf [2022-12-14 10:21:22,261 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-14 10:21:22,261 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-14 10:21:22,261 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-14 10:21:22,261 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-14 10:21:22,262 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-14 10:21:22,262 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-14 10:21:22,262 INFO L138 SettingsManager]: * User list type=DISABLED [2022-12-14 10:21:22,262 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-12-14 10:21:22,262 INFO L138 SettingsManager]: * Explicit value domain=true [2022-12-14 10:21:22,262 INFO L138 SettingsManager]: * Octagon Domain=false [2022-12-14 10:21:22,262 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-12-14 10:21:22,262 INFO L138 SettingsManager]: * Interval Domain=false [2022-12-14 10:21:22,263 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-14 10:21:22,263 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-14 10:21:22,263 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-14 10:21:22,263 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-14 10:21:22,263 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-12-14 10:21:22,263 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-14 10:21:22,263 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-14 10:21:22,264 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-14 10:21:22,264 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-12-14 10:21:22,264 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-12-14 10:21:22,264 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-12-14 10:21:22,264 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-14 10:21:22,264 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-12-14 10:21:22,264 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-12-14 10:21:22,264 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-12-14 10:21:22,264 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-14 10:21:22,264 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-14 10:21:22,264 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-14 10:21:22,265 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-14 10:21:22,265 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-14 10:21:22,265 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 10:21:22,265 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-14 10:21:22,265 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-14 10:21:22,265 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2022-12-14 10:21:22,265 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-12-14 10:21:22,265 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-12-14 10:21:22,265 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-12-14 10:21:22,265 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_2e77b52e-939a-4ffa-8d80-54c08a5c9661/bin/utaipan-gh47qXpMRh/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e77b52e-939a-4ffa-8d80-54c08a5c9661/bin/utaipan-gh47qXpMRh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c0b350b5c7953744a22c8334b20c4dc8efdff09f1ecb36de8b1744d1e20f0260 [2022-12-14 10:21:22,482 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-14 10:21:22,497 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-14 10:21:22,499 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-14 10:21:22,500 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-14 10:21:22,500 INFO L275 PluginConnector]: CDTParser initialized [2022-12-14 10:21:22,501 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e77b52e-939a-4ffa-8d80-54c08a5c9661/bin/utaipan-gh47qXpMRh/../../sv-benchmarks/c/weaver/parallel-parallel-sum-2.wvr.c [2022-12-14 10:21:25,036 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-14 10:21:25,180 INFO L351 CDTParser]: Found 1 translation units. [2022-12-14 10:21:25,180 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e77b52e-939a-4ffa-8d80-54c08a5c9661/sv-benchmarks/c/weaver/parallel-parallel-sum-2.wvr.c [2022-12-14 10:21:25,187 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e77b52e-939a-4ffa-8d80-54c08a5c9661/bin/utaipan-gh47qXpMRh/data/2e9b37aca/1df39b38afe34f8481f2406a5822b09c/FLAG064e87be3 [2022-12-14 10:21:25,588 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e77b52e-939a-4ffa-8d80-54c08a5c9661/bin/utaipan-gh47qXpMRh/data/2e9b37aca/1df39b38afe34f8481f2406a5822b09c [2022-12-14 10:21:25,590 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-14 10:21:25,592 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-14 10:21:25,593 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-14 10:21:25,593 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-14 10:21:25,596 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-14 10:21:25,596 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 10:21:25" (1/1) ... [2022-12-14 10:21:25,597 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4e46af51 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:21:25, skipping insertion in model container [2022-12-14 10:21:25,597 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 10:21:25" (1/1) ... [2022-12-14 10:21:25,602 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-14 10:21:25,621 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-14 10:21:25,727 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-14 10:21:25,729 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-14 10:21:25,730 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-14 10:21:25,730 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-14 10:21:25,732 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-14 10:21:25,733 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-14 10:21:25,733 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-14 10:21:25,733 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-14 10:21:25,737 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-14 10:21:25,737 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-14 10:21:25,738 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-14 10:21:25,739 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-14 10:21:25,739 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-14 10:21:25,739 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-14 10:21:25,740 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-14 10:21:25,740 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-14 10:21:25,741 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-14 10:21:25,741 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-14 10:21:25,743 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-14 10:21:25,743 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-14 10:21:25,747 WARN L237 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_2e77b52e-939a-4ffa-8d80-54c08a5c9661/sv-benchmarks/c/weaver/parallel-parallel-sum-2.wvr.c[4225,4238] [2022-12-14 10:21:25,757 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 10:21:25,766 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2022-12-14 10:21:25,768 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-14 10:21:25,772 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-14 10:21:25,773 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-14 10:21:25,773 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-14 10:21:25,773 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-14 10:21:25,774 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-14 10:21:25,774 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-14 10:21:25,774 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-14 10:21:25,775 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-14 10:21:25,776 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-14 10:21:25,777 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-14 10:21:25,777 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-14 10:21:25,778 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-14 10:21:25,778 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-14 10:21:25,778 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-14 10:21:25,779 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-14 10:21:25,779 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-14 10:21:25,780 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-14 10:21:25,780 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-14 10:21:25,782 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-14 10:21:25,782 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-14 10:21:25,785 WARN L237 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_2e77b52e-939a-4ffa-8d80-54c08a5c9661/sv-benchmarks/c/weaver/parallel-parallel-sum-2.wvr.c[4225,4238] [2022-12-14 10:21:25,788 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 10:21:25,792 INFO L203 MainTranslator]: Completed pre-run [2022-12-14 10:21:25,802 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-14 10:21:25,802 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-14 10:21:25,802 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-14 10:21:25,803 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-14 10:21:25,803 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-14 10:21:25,804 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-14 10:21:25,804 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-14 10:21:25,804 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-14 10:21:25,806 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-14 10:21:25,806 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-14 10:21:25,807 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-14 10:21:25,808 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-14 10:21:25,808 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-14 10:21:25,808 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-14 10:21:25,808 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-14 10:21:25,809 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-14 10:21:25,809 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-14 10:21:25,809 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-14 10:21:25,811 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-14 10:21:25,811 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-14 10:21:25,814 WARN L237 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_2e77b52e-939a-4ffa-8d80-54c08a5c9661/sv-benchmarks/c/weaver/parallel-parallel-sum-2.wvr.c[4225,4238] [2022-12-14 10:21:25,817 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 10:21:25,829 INFO L208 MainTranslator]: Completed translation [2022-12-14 10:21:25,829 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:21:25 WrapperNode [2022-12-14 10:21:25,829 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-14 10:21:25,830 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-14 10:21:25,830 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-14 10:21:25,830 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-14 10:21:25,835 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:21:25" (1/1) ... [2022-12-14 10:21:25,844 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:21:25" (1/1) ... [2022-12-14 10:21:25,873 INFO L138 Inliner]: procedures = 31, calls = 88, calls flagged for inlining = 22, calls inlined = 32, statements flattened = 367 [2022-12-14 10:21:25,873 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-14 10:21:25,874 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-14 10:21:25,874 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-14 10:21:25,874 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-14 10:21:25,883 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:21:25" (1/1) ... [2022-12-14 10:21:25,883 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:21:25" (1/1) ... [2022-12-14 10:21:25,889 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:21:25" (1/1) ... [2022-12-14 10:21:25,889 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:21:25" (1/1) ... [2022-12-14 10:21:25,900 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:21:25" (1/1) ... [2022-12-14 10:21:25,904 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:21:25" (1/1) ... [2022-12-14 10:21:25,907 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:21:25" (1/1) ... [2022-12-14 10:21:25,908 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:21:25" (1/1) ... [2022-12-14 10:21:25,911 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-14 10:21:25,912 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-14 10:21:25,912 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-14 10:21:25,912 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-14 10:21:25,913 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:21:25" (1/1) ... [2022-12-14 10:21:25,918 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 10:21:25,927 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e77b52e-939a-4ffa-8d80-54c08a5c9661/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 10:21:25,938 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e77b52e-939a-4ffa-8d80-54c08a5c9661/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-14 10:21:25,940 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e77b52e-939a-4ffa-8d80-54c08a5c9661/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-14 10:21:25,964 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-14 10:21:25,964 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-12-14 10:21:25,964 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-14 10:21:25,964 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2022-12-14 10:21:25,964 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-12-14 10:21:25,964 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-12-14 10:21:25,965 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-12-14 10:21:25,965 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-12-14 10:21:25,965 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-12-14 10:21:25,965 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-12-14 10:21:25,965 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2022-12-14 10:21:25,965 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2022-12-14 10:21:25,965 INFO L130 BoogieDeclarations]: Found specification of procedure thread5 [2022-12-14 10:21:25,965 INFO L138 BoogieDeclarations]: Found implementation of procedure thread5 [2022-12-14 10:21:25,965 INFO L130 BoogieDeclarations]: Found specification of procedure thread6 [2022-12-14 10:21:25,965 INFO L138 BoogieDeclarations]: Found implementation of procedure thread6 [2022-12-14 10:21:25,965 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-12-14 10:21:25,965 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-12-14 10:21:25,965 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-12-14 10:21:25,965 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-14 10:21:25,966 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-14 10:21:25,966 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-14 10:21:25,966 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2022-12-14 10:21:25,967 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-12-14 10:21:26,073 INFO L235 CfgBuilder]: Building ICFG [2022-12-14 10:21:26,075 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-14 10:21:26,715 INFO L276 CfgBuilder]: Performing block encoding [2022-12-14 10:21:26,864 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-14 10:21:26,864 INFO L300 CfgBuilder]: Removed 5 assume(true) statements. [2022-12-14 10:21:26,866 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 10:21:26 BoogieIcfgContainer [2022-12-14 10:21:26,866 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-14 10:21:26,868 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-14 10:21:26,868 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-14 10:21:26,870 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-14 10:21:26,870 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.12 10:21:25" (1/3) ... [2022-12-14 10:21:26,871 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@152d750b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 10:21:26, skipping insertion in model container [2022-12-14 10:21:26,871 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:21:25" (2/3) ... [2022-12-14 10:21:26,871 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@152d750b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 10:21:26, skipping insertion in model container [2022-12-14 10:21:26,871 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 10:21:26" (3/3) ... [2022-12-14 10:21:26,872 INFO L112 eAbstractionObserver]: Analyzing ICFG parallel-parallel-sum-2.wvr.c [2022-12-14 10:21:26,886 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-14 10:21:26,886 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 36 error locations. [2022-12-14 10:21:26,886 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-12-14 10:21:26,988 INFO L144 ThreadInstanceAdder]: Constructed 18 joinOtherThreadTransitions. [2022-12-14 10:21:27,014 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-12-14 10:21:27,025 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 336 places, 340 transitions, 752 flow [2022-12-14 10:21:27,027 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 336 places, 340 transitions, 752 flow [2022-12-14 10:21:27,028 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 336 places, 340 transitions, 752 flow [2022-12-14 10:21:27,125 INFO L130 PetriNetUnfolder]: 21/290 cut-off events. [2022-12-14 10:21:27,125 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2022-12-14 10:21:27,133 INFO L83 FinitePrefix]: Finished finitePrefix Result has 319 conditions, 290 events. 21/290 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 464 event pairs, 0 based on Foata normal form. 0/233 useless extension candidates. Maximal degree in co-relation 241. Up to 3 conditions per place. [2022-12-14 10:21:27,139 INFO L119 LiptonReduction]: Number of co-enabled transitions 13600 [2022-12-14 10:21:58,505 INFO L134 LiptonReduction]: Checked pairs total: 58013 [2022-12-14 10:21:58,505 INFO L136 LiptonReduction]: Total number of compositions: 310 [2022-12-14 10:21:58,514 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 127 places, 117 transitions, 306 flow [2022-12-14 10:22:00,394 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 58810 states, 53598 states have (on average 5.914045300197769) internal successors, (316981), 58809 states have internal predecessors, (316981), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 10:22:00,410 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-14 10:22:00,415 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;@74bd8aca, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-14 10:22:00,415 INFO L358 AbstractCegarLoop]: Starting to check reachability of 70 error locations. [2022-12-14 10:22:00,501 INFO L276 IsEmpty]: Start isEmpty. Operand has 58810 states, 53598 states have (on average 5.914045300197769) internal successors, (316981), 58809 states have internal predecessors, (316981), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 10:22:00,506 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2022-12-14 10:22:00,506 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 10:22:00,507 INFO L195 NwaCegarLoop]: trace histogram [1, 1] [2022-12-14 10:22:00,507 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 67 more)] === [2022-12-14 10:22:00,512 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 10:22:00,512 INFO L85 PathProgramCache]: Analyzing trace with hash 52413, now seen corresponding path program 1 times [2022-12-14 10:22:00,521 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 10:22:00,522 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [278143771] [2022-12-14 10:22:00,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:22:00,522 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 [2022-12-14 10:22:00,522 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e77b52e-939a-4ffa-8d80-54c08a5c9661/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 10:22:00,523 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e77b52e-939a-4ffa-8d80-54c08a5c9661/bin/utaipan-gh47qXpMRh/mathsat -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) [2022-12-14 10:22:00,543 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e77b52e-939a-4ffa-8d80-54c08a5c9661/bin/utaipan-gh47qXpMRh/mathsat -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 [2022-12-14 10:22:00,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 10:22:00,609 INFO L263 TraceCheckSpWp]: Trace formula consists of 44 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-14 10:22:00,613 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 10:22:00,693 INFO L321 Elim1Store]: treesize reduction 39, result has 40.0 percent of original size [2022-12-14 10:22:00,694 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 [2022-12-14 10:22:00,715 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 10:22:00,715 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 10:22:00,716 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-12-14 10:22:00,716 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [278143771] [2022-12-14 10:22:00,717 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [278143771] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 10:22:00,717 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 10:22:00,717 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-14 10:22:00,718 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [86985835] [2022-12-14 10:22:00,719 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 10:22:00,723 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 10:22:00,723 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-12-14 10:22:00,745 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 10:22:00,746 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 10:22:00,818 INFO L87 Difference]: Start difference. First operand has 58810 states, 53598 states have (on average 5.914045300197769) internal successors, (316981), 58809 states have internal predecessors, (316981), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 10:22:02,078 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 10:22:02,078 INFO L93 Difference]: Finished difference Result 58808 states and 316979 transitions. [2022-12-14 10:22:02,079 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 10:22:02,080 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 [2022-12-14 10:22:02,080 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 10:22:02,748 INFO L225 Difference]: With dead ends: 58808 [2022-12-14 10:22:02,748 INFO L226 Difference]: Without dead ends: 58808 [2022-12-14 10:22:02,749 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 [2022-12-14 10:22:02,751 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 79 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 145 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 79 SdHoareTripleChecker+Valid, 36 SdHoareTripleChecker+Invalid, 149 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 145 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-12-14 10:22:02,752 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [79 Valid, 36 Invalid, 149 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 145 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-12-14 10:22:03,010 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58808 states. [2022-12-14 10:22:04,539 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58808 to 58808. [2022-12-14 10:22:04,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58808 states, 53598 states have (on average 5.914007985372589) internal successors, (316979), 58807 states have internal predecessors, (316979), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 10:22:05,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58808 states to 58808 states and 316979 transitions. [2022-12-14 10:22:05,074 INFO L78 Accepts]: Start accepts. Automaton has 58808 states and 316979 transitions. Word has length 2 [2022-12-14 10:22:05,075 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 10:22:05,075 INFO L495 AbstractCegarLoop]: Abstraction has 58808 states and 316979 transitions. [2022-12-14 10:22:05,075 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) [2022-12-14 10:22:05,075 INFO L276 IsEmpty]: Start isEmpty. Operand 58808 states and 316979 transitions. [2022-12-14 10:22:05,076 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2022-12-14 10:22:05,076 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 10:22:05,076 INFO L195 NwaCegarLoop]: trace histogram [1, 1] [2022-12-14 10:22:05,085 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e77b52e-939a-4ffa-8d80-54c08a5c9661/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2022-12-14 10:22:05,277 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e77b52e-939a-4ffa-8d80-54c08a5c9661/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 10:22:05,278 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 67 more)] === [2022-12-14 10:22:05,280 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 10:22:05,281 INFO L85 PathProgramCache]: Analyzing trace with hash 52638, now seen corresponding path program 1 times [2022-12-14 10:22:05,282 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 10:22:05,284 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1344054155] [2022-12-14 10:22:05,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:22:05,285 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 [2022-12-14 10:22:05,286 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e77b52e-939a-4ffa-8d80-54c08a5c9661/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 10:22:05,290 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e77b52e-939a-4ffa-8d80-54c08a5c9661/bin/utaipan-gh47qXpMRh/mathsat -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) [2022-12-14 10:22:05,294 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e77b52e-939a-4ffa-8d80-54c08a5c9661/bin/utaipan-gh47qXpMRh/mathsat -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 [2022-12-14 10:22:05,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 10:22:05,439 INFO L263 TraceCheckSpWp]: Trace formula consists of 53 conjuncts, 6 conjunts are in the unsatisfiable core [2022-12-14 10:22:05,440 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 10:22:05,475 INFO L321 Elim1Store]: treesize reduction 46, result has 29.2 percent of original size [2022-12-14 10:22:05,475 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 3 case distinctions, treesize of input 22 treesize of output 33 [2022-12-14 10:22:05,499 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 10:22:05,499 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 10:22:05,499 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-12-14 10:22:05,500 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1344054155] [2022-12-14 10:22:05,500 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1344054155] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 10:22:05,500 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 10:22:05,500 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-14 10:22:05,500 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1615138974] [2022-12-14 10:22:05,501 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 10:22:05,502 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 10:22:05,502 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-12-14 10:22:05,502 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 10:22:05,503 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 10:22:05,503 INFO L87 Difference]: Start difference. First operand 58808 states and 316979 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) [2022-12-14 10:22:06,522 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 10:22:06,522 INFO L93 Difference]: Finished difference Result 45841 states and 239940 transitions. [2022-12-14 10:22:06,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 10:22:06,523 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 [2022-12-14 10:22:06,523 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 10:22:06,773 INFO L225 Difference]: With dead ends: 45841 [2022-12-14 10:22:06,773 INFO L226 Difference]: Without dead ends: 45841 [2022-12-14 10:22:06,773 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 [2022-12-14 10:22:06,774 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 83 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 153 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 83 SdHoareTripleChecker+Valid, 36 SdHoareTripleChecker+Invalid, 159 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 153 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-12-14 10:22:06,774 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [83 Valid, 36 Invalid, 159 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 153 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-12-14 10:22:06,879 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45841 states. [2022-12-14 10:22:08,021 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45841 to 44883. [2022-12-14 10:22:08,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44883 states, 41274 states have (on average 5.741483742792073) internal successors, (236974), 44882 states have internal predecessors, (236974), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 10:22:08,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44883 states to 44883 states and 236974 transitions. [2022-12-14 10:22:08,377 INFO L78 Accepts]: Start accepts. Automaton has 44883 states and 236974 transitions. Word has length 2 [2022-12-14 10:22:08,377 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 10:22:08,377 INFO L495 AbstractCegarLoop]: Abstraction has 44883 states and 236974 transitions. [2022-12-14 10:22:08,378 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) [2022-12-14 10:22:08,378 INFO L276 IsEmpty]: Start isEmpty. Operand 44883 states and 236974 transitions. [2022-12-14 10:22:08,378 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2022-12-14 10:22:08,378 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 10:22:08,378 INFO L195 NwaCegarLoop]: trace histogram [1, 1] [2022-12-14 10:22:08,386 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e77b52e-939a-4ffa-8d80-54c08a5c9661/bin/utaipan-gh47qXpMRh/mathsat -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)] Ended with exit code 0 [2022-12-14 10:22:08,579 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e77b52e-939a-4ffa-8d80-54c08a5c9661/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 10:22:08,580 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 67 more)] === [2022-12-14 10:22:08,582 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 10:22:08,583 INFO L85 PathProgramCache]: Analyzing trace with hash 52414, now seen corresponding path program 1 times [2022-12-14 10:22:08,584 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 10:22:08,585 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1230642823] [2022-12-14 10:22:08,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:22:08,586 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 [2022-12-14 10:22:08,586 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e77b52e-939a-4ffa-8d80-54c08a5c9661/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 10:22:08,587 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e77b52e-939a-4ffa-8d80-54c08a5c9661/bin/utaipan-gh47qXpMRh/mathsat -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) [2022-12-14 10:22:08,588 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e77b52e-939a-4ffa-8d80-54c08a5c9661/bin/utaipan-gh47qXpMRh/mathsat -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 [2022-12-14 10:22:08,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 10:22:08,662 INFO L263 TraceCheckSpWp]: Trace formula consists of 44 conjuncts, 9 conjunts are in the unsatisfiable core [2022-12-14 10:22:08,664 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 10:22:08,733 INFO L321 Elim1Store]: treesize reduction 37, result has 37.3 percent of original size [2022-12-14 10:22:08,733 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 [2022-12-14 10:22:08,758 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 10:22:08,758 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 10:22:08,759 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-12-14 10:22:08,759 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1230642823] [2022-12-14 10:22:08,759 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1230642823] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 10:22:08,759 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 10:22:08,759 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-14 10:22:08,760 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [274800936] [2022-12-14 10:22:08,760 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 10:22:08,760 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 10:22:08,760 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-12-14 10:22:08,761 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 10:22:08,761 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 10:22:08,761 INFO L87 Difference]: Start difference. First operand 44883 states and 236974 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) [2022-12-14 10:22:09,589 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 10:22:09,590 INFO L93 Difference]: Finished difference Result 44895 states and 236998 transitions. [2022-12-14 10:22:09,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 10:22:09,590 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 [2022-12-14 10:22:09,590 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 10:22:09,870 INFO L225 Difference]: With dead ends: 44895 [2022-12-14 10:22:09,871 INFO L226 Difference]: Without dead ends: 44895 [2022-12-14 10:22:09,871 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 [2022-12-14 10:22:09,872 INFO L413 NwaCegarLoop]: 32 mSDtfsCounter, 11 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 135 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 50 SdHoareTripleChecker+Invalid, 135 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 135 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-12-14 10:22:09,872 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 50 Invalid, 135 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 135 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-12-14 10:22:09,962 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44895 states. [2022-12-14 10:22:11,103 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44895 to 44884. [2022-12-14 10:22:11,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44884 states, 41275 states have (on average 5.7414173228346455) internal successors, (236977), 44883 states have internal predecessors, (236977), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 10:22:11,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44884 states to 44884 states and 236977 transitions. [2022-12-14 10:22:11,467 INFO L78 Accepts]: Start accepts. Automaton has 44884 states and 236977 transitions. Word has length 2 [2022-12-14 10:22:11,467 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 10:22:11,467 INFO L495 AbstractCegarLoop]: Abstraction has 44884 states and 236977 transitions. [2022-12-14 10:22:11,467 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) [2022-12-14 10:22:11,468 INFO L276 IsEmpty]: Start isEmpty. Operand 44884 states and 236977 transitions. [2022-12-14 10:22:11,468 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2022-12-14 10:22:11,468 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 10:22:11,468 INFO L195 NwaCegarLoop]: trace histogram [1, 1] [2022-12-14 10:22:11,476 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e77b52e-939a-4ffa-8d80-54c08a5c9661/bin/utaipan-gh47qXpMRh/mathsat -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 [2022-12-14 10:22:11,668 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e77b52e-939a-4ffa-8d80-54c08a5c9661/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 10:22:11,669 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 67 more)] === [2022-12-14 10:22:11,670 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 10:22:11,670 INFO L85 PathProgramCache]: Analyzing trace with hash 52639, now seen corresponding path program 1 times [2022-12-14 10:22:11,670 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 10:22:11,671 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1361503305] [2022-12-14 10:22:11,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:22:11,671 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 [2022-12-14 10:22:11,672 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e77b52e-939a-4ffa-8d80-54c08a5c9661/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 10:22:11,673 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e77b52e-939a-4ffa-8d80-54c08a5c9661/bin/utaipan-gh47qXpMRh/mathsat -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) [2022-12-14 10:22:11,675 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e77b52e-939a-4ffa-8d80-54c08a5c9661/bin/utaipan-gh47qXpMRh/mathsat -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 [2022-12-14 10:22:11,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 10:22:11,775 INFO L263 TraceCheckSpWp]: Trace formula consists of 53 conjuncts, 9 conjunts are in the unsatisfiable core [2022-12-14 10:22:11,777 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 10:22:11,792 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:22:11,798 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:22:11,824 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-12-14 10:22:11,824 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 20 [2022-12-14 10:22:11,835 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 [2022-12-14 10:22:11,868 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 10:22:11,869 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 10:22:11,869 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-12-14 10:22:11,869 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1361503305] [2022-12-14 10:22:11,869 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1361503305] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 10:22:11,869 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 10:22:11,869 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-14 10:22:11,870 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [463299745] [2022-12-14 10:22:11,870 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 10:22:11,870 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 10:22:11,870 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-12-14 10:22:11,870 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 10:22:11,871 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 10:22:11,871 INFO L87 Difference]: Start difference. First operand 44884 states and 236977 transitions. Second operand has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 10:22:12,440 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 10:22:12,440 INFO L93 Difference]: Finished difference Result 30483 states and 155135 transitions. [2022-12-14 10:22:12,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 10:22:12,441 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 [2022-12-14 10:22:12,441 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 10:22:12,623 INFO L225 Difference]: With dead ends: 30483 [2022-12-14 10:22:12,623 INFO L226 Difference]: Without dead ends: 30483 [2022-12-14 10:22:12,623 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 [2022-12-14 10:22:12,624 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 86 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 73 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 86 SdHoareTripleChecker+Valid, 18 SdHoareTripleChecker+Invalid, 78 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 73 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-12-14 10:22:12,624 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [86 Valid, 18 Invalid, 78 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 73 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-12-14 10:22:12,703 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30483 states. [2022-12-14 10:22:13,600 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30483 to 30483. [2022-12-14 10:22:13,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30483 states, 28556 states have (on average 5.432658635663258) internal successors, (155135), 30482 states have internal predecessors, (155135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 10:22:13,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30483 states to 30483 states and 155135 transitions. [2022-12-14 10:22:13,988 INFO L78 Accepts]: Start accepts. Automaton has 30483 states and 155135 transitions. Word has length 2 [2022-12-14 10:22:13,988 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 10:22:13,988 INFO L495 AbstractCegarLoop]: Abstraction has 30483 states and 155135 transitions. [2022-12-14 10:22:13,988 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) [2022-12-14 10:22:13,988 INFO L276 IsEmpty]: Start isEmpty. Operand 30483 states and 155135 transitions. [2022-12-14 10:22:13,989 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2022-12-14 10:22:13,989 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 10:22:13,989 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2022-12-14 10:22:13,996 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e77b52e-939a-4ffa-8d80-54c08a5c9661/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Ended with exit code 0 [2022-12-14 10:22:14,189 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e77b52e-939a-4ffa-8d80-54c08a5c9661/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 10:22:14,191 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 67 more)] === [2022-12-14 10:22:14,192 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 10:22:14,192 INFO L85 PathProgramCache]: Analyzing trace with hash 1632081, now seen corresponding path program 1 times [2022-12-14 10:22:14,193 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 10:22:14,194 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1064901912] [2022-12-14 10:22:14,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:22:14,195 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 10:22:14,195 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e77b52e-939a-4ffa-8d80-54c08a5c9661/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 10:22:14,198 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e77b52e-939a-4ffa-8d80-54c08a5c9661/bin/utaipan-gh47qXpMRh/mathsat -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) [2022-12-14 10:22:14,201 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e77b52e-939a-4ffa-8d80-54c08a5c9661/bin/utaipan-gh47qXpMRh/mathsat -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 [2022-12-14 10:22:14,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 10:22:14,349 INFO L263 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 11 conjunts are in the unsatisfiable core [2022-12-14 10:22:14,350 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 10:22:14,418 INFO L321 Elim1Store]: treesize reduction 37, result has 37.3 percent of original size [2022-12-14 10:22:14,419 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 [2022-12-14 10:22:14,469 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 10:22:14,469 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 10:22:14,658 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 10:22:14,658 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-12-14 10:22:14,658 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1064901912] [2022-12-14 10:22:14,658 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1064901912] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 10:22:14,658 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1626676342] [2022-12-14 10:22:14,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:22:14,659 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-12-14 10:22:14,659 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e77b52e-939a-4ffa-8d80-54c08a5c9661/bin/utaipan-gh47qXpMRh/cvc4 [2022-12-14 10:22:14,660 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e77b52e-939a-4ffa-8d80-54c08a5c9661/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-12-14 10:22:14,661 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e77b52e-939a-4ffa-8d80-54c08a5c9661/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (7)] Waiting until timeout for monitored process [2022-12-14 10:22:14,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 10:22:14,744 INFO L263 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 11 conjunts are in the unsatisfiable core [2022-12-14 10:22:14,745 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 10:22:14,798 INFO L321 Elim1Store]: treesize reduction 37, result has 37.3 percent of original size [2022-12-14 10:22:14,798 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 [2022-12-14 10:22:14,822 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 10:22:14,822 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 10:22:14,881 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 10:22:14,881 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1626676342] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 10:22:14,881 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [251330180] [2022-12-14 10:22:14,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:22:14,881 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 10:22:14,882 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e77b52e-939a-4ffa-8d80-54c08a5c9661/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 10:22:14,882 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e77b52e-939a-4ffa-8d80-54c08a5c9661/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 10:22:14,884 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e77b52e-939a-4ffa-8d80-54c08a5c9661/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-12-14 10:22:14,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 10:22:14,956 INFO L263 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 10 conjunts are in the unsatisfiable core [2022-12-14 10:22:14,957 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 10:22:15,007 INFO L321 Elim1Store]: treesize reduction 37, result has 37.3 percent of original size [2022-12-14 10:22:15,007 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 [2022-12-14 10:22:15,039 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 10:22:15,039 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 10:22:15,168 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 10:22:15,168 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [251330180] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 10:22:15,168 INFO L184 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2022-12-14 10:22:15,168 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2, 2, 2, 2] total 6 [2022-12-14 10:22:15,168 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [849092881] [2022-12-14 10:22:15,169 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2022-12-14 10:22:15,169 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-12-14 10:22:15,169 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-12-14 10:22:15,169 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-12-14 10:22:15,169 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2022-12-14 10:22:15,169 INFO L87 Difference]: Start difference. First operand 30483 states and 155135 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) [2022-12-14 10:22:16,521 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 10:22:16,521 INFO L93 Difference]: Finished difference Result 30523 states and 155217 transitions. [2022-12-14 10:22:16,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-14 10:22:16,522 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 3 [2022-12-14 10:22:16,522 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 10:22:16,784 INFO L225 Difference]: With dead ends: 30523 [2022-12-14 10:22:16,784 INFO L226 Difference]: Without dead ends: 30523 [2022-12-14 10:22:16,785 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=40, Invalid=50, Unknown=0, NotChecked=0, Total=90 [2022-12-14 10:22:16,785 INFO L413 NwaCegarLoop]: 32 mSDtfsCounter, 82 mSDsluCounter, 44 mSDsCounter, 0 mSdLazyCounter, 247 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 82 SdHoareTripleChecker+Valid, 76 SdHoareTripleChecker+Invalid, 254 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 247 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-12-14 10:22:16,785 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [82 Valid, 76 Invalid, 254 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 247 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-12-14 10:22:16,858 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30523 states. [2022-12-14 10:22:17,623 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30523 to 30486. [2022-12-14 10:22:17,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30486 states, 28559 states have (on average 5.432298049651599) internal successors, (155141), 30485 states have internal predecessors, (155141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 10:22:17,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30486 states to 30486 states and 155141 transitions. [2022-12-14 10:22:17,896 INFO L78 Accepts]: Start accepts. Automaton has 30486 states and 155141 transitions. Word has length 3 [2022-12-14 10:22:17,896 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 10:22:17,896 INFO L495 AbstractCegarLoop]: Abstraction has 30486 states and 155141 transitions. [2022-12-14 10:22:17,896 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) [2022-12-14 10:22:17,896 INFO L276 IsEmpty]: Start isEmpty. Operand 30486 states and 155141 transitions. [2022-12-14 10:22:17,896 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-12-14 10:22:17,896 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 10:22:17,897 INFO L195 NwaCegarLoop]: trace histogram [4, 1, 1] [2022-12-14 10:22:17,901 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e77b52e-939a-4ffa-8d80-54c08a5c9661/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2022-12-14 10:22:18,110 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e77b52e-939a-4ffa-8d80-54c08a5c9661/bin/utaipan-gh47qXpMRh/mathsat -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 [2022-12-14 10:22:18,305 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e77b52e-939a-4ffa-8d80-54c08a5c9661/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (7)] Forceful destruction successful, exit code 0 [2022-12-14 10:22:18,498 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e77b52e-939a-4ffa-8d80-54c08a5c9661/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e77b52e-939a-4ffa-8d80-54c08a5c9661/bin/utaipan-gh47qXpMRh/mathsat -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 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e77b52e-939a-4ffa-8d80-54c08a5c9661/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt [2022-12-14 10:22:18,499 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 67 more)] === [2022-12-14 10:22:18,501 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 10:22:18,502 INFO L85 PathProgramCache]: Analyzing trace with hash 1383881086, now seen corresponding path program 2 times [2022-12-14 10:22:18,503 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 10:22:18,503 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1153011818] [2022-12-14 10:22:18,503 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-14 10:22:18,503 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 10:22:18,503 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e77b52e-939a-4ffa-8d80-54c08a5c9661/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 10:22:18,504 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e77b52e-939a-4ffa-8d80-54c08a5c9661/bin/utaipan-gh47qXpMRh/mathsat -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) [2022-12-14 10:22:18,505 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e77b52e-939a-4ffa-8d80-54c08a5c9661/bin/utaipan-gh47qXpMRh/mathsat -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 [2022-12-14 10:22:18,579 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-14 10:22:18,579 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-14 10:22:18,582 INFO L263 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 13 conjunts are in the unsatisfiable core [2022-12-14 10:22:18,584 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 10:22:18,628 INFO L321 Elim1Store]: treesize reduction 37, result has 37.3 percent of original size [2022-12-14 10:22:18,629 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 [2022-12-14 10:22:18,753 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 10:22:18,753 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 10:22:19,251 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 10:22:19,251 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-12-14 10:22:19,252 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1153011818] [2022-12-14 10:22:19,252 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1153011818] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 10:22:19,252 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [511945624] [2022-12-14 10:22:19,252 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-14 10:22:19,252 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-12-14 10:22:19,252 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e77b52e-939a-4ffa-8d80-54c08a5c9661/bin/utaipan-gh47qXpMRh/cvc4 [2022-12-14 10:22:19,253 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e77b52e-939a-4ffa-8d80-54c08a5c9661/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-12-14 10:22:19,253 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e77b52e-939a-4ffa-8d80-54c08a5c9661/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (10)] Waiting until timeout for monitored process [2022-12-14 10:22:19,409 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-14 10:22:19,409 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-14 10:22:19,411 INFO L263 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 14 conjunts are in the unsatisfiable core [2022-12-14 10:22:19,412 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 10:22:19,464 INFO L321 Elim1Store]: treesize reduction 37, result has 37.3 percent of original size [2022-12-14 10:22:19,464 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 [2022-12-14 10:22:19,546 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 10:22:19,547 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 10:22:20,294 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 10:22:20,294 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [511945624] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 10:22:20,294 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2025698723] [2022-12-14 10:22:20,294 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-14 10:22:20,294 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 10:22:20,294 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e77b52e-939a-4ffa-8d80-54c08a5c9661/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 10:22:20,295 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e77b52e-939a-4ffa-8d80-54c08a5c9661/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 10:22:20,296 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e77b52e-939a-4ffa-8d80-54c08a5c9661/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-12-14 10:22:20,399 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-14 10:22:20,399 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-14 10:22:20,402 INFO L263 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 14 conjunts are in the unsatisfiable core [2022-12-14 10:22:20,404 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 10:22:20,458 INFO L321 Elim1Store]: treesize reduction 37, result has 37.3 percent of original size [2022-12-14 10:22:20,458 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 [2022-12-14 10:22:20,512 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 10:22:20,512 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 10:22:20,658 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 10:22:20,659 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2025698723] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 10:22:20,659 INFO L184 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2022-12-14 10:22:20,659 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5, 5, 5, 5] total 15 [2022-12-14 10:22:20,659 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1339606482] [2022-12-14 10:22:20,659 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2022-12-14 10:22:20,659 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-12-14 10:22:20,659 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-12-14 10:22:20,660 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-12-14 10:22:20,660 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=182, Unknown=0, NotChecked=0, Total=272 [2022-12-14 10:22:20,660 INFO L87 Difference]: Start difference. First operand 30486 states and 155141 transitions. Second operand has 17 states, 16 states have (on average 1.1875) internal successors, (19), 16 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) [2022-12-14 10:22:27,569 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 10:22:27,570 INFO L93 Difference]: Finished difference Result 30593 states and 155359 transitions. [2022-12-14 10:22:27,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-12-14 10:22:27,571 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 1.1875) internal successors, (19), 16 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 6 [2022-12-14 10:22:27,571 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 10:22:27,710 INFO L225 Difference]: With dead ends: 30593 [2022-12-14 10:22:27,711 INFO L226 Difference]: Without dead ends: 30593 [2022-12-14 10:22:27,711 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=178, Invalid=328, Unknown=0, NotChecked=0, Total=506 [2022-12-14 10:22:27,711 INFO L413 NwaCegarLoop]: 38 mSDtfsCounter, 424 mSDsluCounter, 230 mSDsCounter, 0 mSdLazyCounter, 1059 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 424 SdHoareTripleChecker+Valid, 268 SdHoareTripleChecker+Invalid, 1101 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 1059 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.9s IncrementalHoareTripleChecker+Time [2022-12-14 10:22:27,712 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [424 Valid, 268 Invalid, 1101 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 1059 Invalid, 0 Unknown, 0 Unchecked, 4.9s Time] [2022-12-14 10:22:27,774 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30593 states. [2022-12-14 10:22:28,421 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30593 to 30492. [2022-12-14 10:22:28,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30492 states, 28565 states have (on average 5.431577104848591) internal successors, (155153), 30491 states have internal predecessors, (155153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 10:22:28,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30492 states to 30492 states and 155153 transitions. [2022-12-14 10:22:28,569 INFO L78 Accepts]: Start accepts. Automaton has 30492 states and 155153 transitions. Word has length 6 [2022-12-14 10:22:28,570 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 10:22:28,570 INFO L495 AbstractCegarLoop]: Abstraction has 30492 states and 155153 transitions. [2022-12-14 10:22:28,570 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 16 states have (on average 1.1875) internal successors, (19), 16 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) [2022-12-14 10:22:28,570 INFO L276 IsEmpty]: Start isEmpty. Operand 30492 states and 155153 transitions. [2022-12-14 10:22:28,570 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-12-14 10:22:28,570 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 10:22:28,570 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-12-14 10:22:28,573 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e77b52e-939a-4ffa-8d80-54c08a5c9661/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (10)] Ended with exit code 0 [2022-12-14 10:22:28,786 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e77b52e-939a-4ffa-8d80-54c08a5c9661/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2022-12-14 10:22:28,984 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e77b52e-939a-4ffa-8d80-54c08a5c9661/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Ended with exit code 0 [2022-12-14 10:22:29,172 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e77b52e-939a-4ffa-8d80-54c08a5c9661/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e77b52e-939a-4ffa-8d80-54c08a5c9661/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e77b52e-939a-4ffa-8d80-54c08a5c9661/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 10:22:29,173 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 67 more)] === [2022-12-14 10:22:29,174 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 10:22:29,175 INFO L85 PathProgramCache]: Analyzing trace with hash 1406183100, now seen corresponding path program 1 times [2022-12-14 10:22:29,175 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 10:22:29,176 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2137797805] [2022-12-14 10:22:29,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:22:29,176 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 [2022-12-14 10:22:29,177 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e77b52e-939a-4ffa-8d80-54c08a5c9661/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 10:22:29,179 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e77b52e-939a-4ffa-8d80-54c08a5c9661/bin/utaipan-gh47qXpMRh/mathsat -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) [2022-12-14 10:22:29,182 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e77b52e-939a-4ffa-8d80-54c08a5c9661/bin/utaipan-gh47qXpMRh/mathsat -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 [2022-12-14 10:22:29,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 10:22:29,257 INFO L263 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 7 conjunts are in the unsatisfiable core [2022-12-14 10:22:29,259 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 10:22:29,281 INFO L321 Elim1Store]: treesize reduction 50, result has 23.1 percent of original size [2022-12-14 10:22:29,281 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 [2022-12-14 10:22:29,300 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 10:22:29,300 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 10:22:29,300 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-12-14 10:22:29,300 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2137797805] [2022-12-14 10:22:29,300 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2137797805] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 10:22:29,301 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 10:22:29,301 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-14 10:22:29,301 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [709312635] [2022-12-14 10:22:29,301 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 10:22:29,301 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 10:22:29,301 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-12-14 10:22:29,301 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 10:22:29,301 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 10:22:29,301 INFO L87 Difference]: Start difference. First operand 30492 states and 155153 transitions. Second operand has 3 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 10:22:29,893 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 10:22:29,893 INFO L93 Difference]: Finished difference Result 31324 states and 158181 transitions. [2022-12-14 10:22:29,894 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 10:22:29,894 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2022-12-14 10:22:29,894 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 10:22:30,041 INFO L225 Difference]: With dead ends: 31324 [2022-12-14 10:22:30,041 INFO L226 Difference]: Without dead ends: 31324 [2022-12-14 10:22:30,041 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 10:22:30,042 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 75 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 150 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 75 SdHoareTripleChecker+Valid, 35 SdHoareTripleChecker+Invalid, 157 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 150 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-12-14 10:22:30,042 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [75 Valid, 35 Invalid, 157 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 150 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-12-14 10:22:30,109 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31324 states. [2022-12-14 10:22:30,764 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31324 to 30729. [2022-12-14 10:22:30,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30729 states, 28842 states have (on average 5.415227792802163) internal successors, (156186), 30728 states have internal predecessors, (156186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 10:22:30,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30729 states to 30729 states and 156186 transitions. [2022-12-14 10:22:30,939 INFO L78 Accepts]: Start accepts. Automaton has 30729 states and 156186 transitions. Word has length 6 [2022-12-14 10:22:30,939 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 10:22:30,939 INFO L495 AbstractCegarLoop]: Abstraction has 30729 states and 156186 transitions. [2022-12-14 10:22:30,939 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 10:22:30,939 INFO L276 IsEmpty]: Start isEmpty. Operand 30729 states and 156186 transitions. [2022-12-14 10:22:30,939 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-12-14 10:22:30,939 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 10:22:30,940 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-12-14 10:22:30,949 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e77b52e-939a-4ffa-8d80-54c08a5c9661/bin/utaipan-gh47qXpMRh/mathsat -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)] Ended with exit code 0 [2022-12-14 10:22:31,140 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e77b52e-939a-4ffa-8d80-54c08a5c9661/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 10:22:31,141 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 67 more)] === [2022-12-14 10:22:31,142 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 10:22:31,143 INFO L85 PathProgramCache]: Analyzing trace with hash 1406183101, now seen corresponding path program 1 times [2022-12-14 10:22:31,143 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 10:22:31,144 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1488703302] [2022-12-14 10:22:31,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:22:31,144 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 10:22:31,145 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e77b52e-939a-4ffa-8d80-54c08a5c9661/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 10:22:31,147 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e77b52e-939a-4ffa-8d80-54c08a5c9661/bin/utaipan-gh47qXpMRh/mathsat -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) [2022-12-14 10:22:31,150 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e77b52e-939a-4ffa-8d80-54c08a5c9661/bin/utaipan-gh47qXpMRh/mathsat -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 [2022-12-14 10:22:31,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 10:22:31,231 INFO L263 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 10 conjunts are in the unsatisfiable core [2022-12-14 10:22:31,233 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 10:22:31,244 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:22:31,244 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:22:31,258 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-12-14 10:22:31,258 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 20 [2022-12-14 10:22:31,263 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 12 [2022-12-14 10:22:31,284 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 10:22:31,284 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 10:22:31,284 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-12-14 10:22:31,284 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1488703302] [2022-12-14 10:22:31,284 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1488703302] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 10:22:31,284 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 10:22:31,284 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-14 10:22:31,285 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [90589691] [2022-12-14 10:22:31,285 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 10:22:31,285 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 10:22:31,285 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-12-14 10:22:31,285 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 10:22:31,285 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 10:22:31,286 INFO L87 Difference]: Start difference. First operand 30729 states and 156186 transitions. Second operand has 3 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 10:22:31,792 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 10:22:31,792 INFO L93 Difference]: Finished difference Result 30489 states and 155266 transitions. [2022-12-14 10:22:31,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 10:22:31,792 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2022-12-14 10:22:31,793 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 10:22:31,932 INFO L225 Difference]: With dead ends: 30489 [2022-12-14 10:22:31,932 INFO L226 Difference]: Without dead ends: 30489 [2022-12-14 10:22:31,933 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 10:22:31,933 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 80 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 72 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 80 SdHoareTripleChecker+Valid, 17 SdHoareTripleChecker+Invalid, 77 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 72 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-12-14 10:22:31,933 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [80 Valid, 17 Invalid, 77 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 72 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-12-14 10:22:31,997 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30489 states. [2022-12-14 10:22:32,621 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30489 to 30489. [2022-12-14 10:22:32,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30489 states, 28684 states have (on average 5.412982847580532) internal successors, (155266), 30488 states have internal predecessors, (155266), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 10:22:32,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30489 states to 30489 states and 155266 transitions. [2022-12-14 10:22:32,795 INFO L78 Accepts]: Start accepts. Automaton has 30489 states and 155266 transitions. Word has length 6 [2022-12-14 10:22:32,795 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 10:22:32,795 INFO L495 AbstractCegarLoop]: Abstraction has 30489 states and 155266 transitions. [2022-12-14 10:22:32,795 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 10:22:32,795 INFO L276 IsEmpty]: Start isEmpty. Operand 30489 states and 155266 transitions. [2022-12-14 10:22:32,796 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-12-14 10:22:32,796 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 10:22:32,796 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 10:22:32,805 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e77b52e-939a-4ffa-8d80-54c08a5c9661/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2022-12-14 10:22:32,996 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e77b52e-939a-4ffa-8d80-54c08a5c9661/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 10:22:32,997 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 67 more)] === [2022-12-14 10:22:32,998 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 10:22:32,998 INFO L85 PathProgramCache]: Analyzing trace with hash -1894529033, now seen corresponding path program 1 times [2022-12-14 10:22:32,999 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 10:22:32,999 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [351521849] [2022-12-14 10:22:33,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:22:33,000 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 [2022-12-14 10:22:33,001 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e77b52e-939a-4ffa-8d80-54c08a5c9661/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 10:22:33,003 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e77b52e-939a-4ffa-8d80-54c08a5c9661/bin/utaipan-gh47qXpMRh/mathsat -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) [2022-12-14 10:22:33,006 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e77b52e-939a-4ffa-8d80-54c08a5c9661/bin/utaipan-gh47qXpMRh/mathsat -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 [2022-12-14 10:22:33,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 10:22:33,084 INFO L263 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 5 conjunts are in the unsatisfiable core [2022-12-14 10:22:33,085 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 10:22:33,088 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2022-12-14 10:22:33,100 INFO L321 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2022-12-14 10:22:33,101 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 20 [2022-12-14 10:22:33,109 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 10:22:33,109 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 10:22:33,110 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-12-14 10:22:33,110 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [351521849] [2022-12-14 10:22:33,110 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [351521849] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 10:22:33,110 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 10:22:33,110 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-14 10:22:33,110 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1009213539] [2022-12-14 10:22:33,110 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 10:22:33,110 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 10:22:33,111 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-12-14 10:22:33,111 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 10:22:33,111 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 10:22:33,111 INFO L87 Difference]: Start difference. First operand 30489 states and 155266 transitions. Second operand has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 10:22:33,623 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 10:22:33,623 INFO L93 Difference]: Finished difference Result 27009 states and 133992 transitions. [2022-12-14 10:22:33,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 10:22:33,624 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2022-12-14 10:22:33,624 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 10:22:33,743 INFO L225 Difference]: With dead ends: 27009 [2022-12-14 10:22:33,743 INFO L226 Difference]: Without dead ends: 27009 [2022-12-14 10:22:33,744 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 10:22:33,744 INFO L413 NwaCegarLoop]: 37 mSDtfsCounter, 66 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 166 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 66 SdHoareTripleChecker+Valid, 53 SdHoareTripleChecker+Invalid, 171 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 166 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-12-14 10:22:33,744 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [66 Valid, 53 Invalid, 171 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 166 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-12-14 10:22:33,801 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27009 states. [2022-12-14 10:22:34,368 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27009 to 26631. [2022-12-14 10:22:34,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26631 states, 25226 states have (on average 5.265638626813605) internal successors, (132831), 26630 states have internal predecessors, (132831), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 10:22:34,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26631 states to 26631 states and 132831 transitions. [2022-12-14 10:22:34,633 INFO L78 Accepts]: Start accepts. Automaton has 26631 states and 132831 transitions. Word has length 8 [2022-12-14 10:22:34,633 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 10:22:34,633 INFO L495 AbstractCegarLoop]: Abstraction has 26631 states and 132831 transitions. [2022-12-14 10:22:34,633 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 10:22:34,633 INFO L276 IsEmpty]: Start isEmpty. Operand 26631 states and 132831 transitions. [2022-12-14 10:22:34,634 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-12-14 10:22:34,634 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 10:22:34,634 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 10:22:34,642 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e77b52e-939a-4ffa-8d80-54c08a5c9661/bin/utaipan-gh47qXpMRh/mathsat -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 [2022-12-14 10:22:34,835 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e77b52e-939a-4ffa-8d80-54c08a5c9661/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 10:22:34,835 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 67 more)] === [2022-12-14 10:22:34,836 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 10:22:34,837 INFO L85 PathProgramCache]: Analyzing trace with hash -1894529032, now seen corresponding path program 1 times [2022-12-14 10:22:34,837 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 10:22:34,838 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [332690304] [2022-12-14 10:22:34,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:22:34,839 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 [2022-12-14 10:22:34,839 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e77b52e-939a-4ffa-8d80-54c08a5c9661/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 10:22:34,842 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e77b52e-939a-4ffa-8d80-54c08a5c9661/bin/utaipan-gh47qXpMRh/mathsat -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) [2022-12-14 10:22:34,845 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e77b52e-939a-4ffa-8d80-54c08a5c9661/bin/utaipan-gh47qXpMRh/mathsat -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 [2022-12-14 10:22:34,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 10:22:34,953 INFO L263 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 6 conjunts are in the unsatisfiable core [2022-12-14 10:22:34,954 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 10:22:34,957 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-12-14 10:22:34,975 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-12-14 10:22:34,975 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 14 [2022-12-14 10:22:34,989 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 10:22:34,989 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 10:22:34,989 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-12-14 10:22:34,989 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [332690304] [2022-12-14 10:22:34,990 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [332690304] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 10:22:34,990 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 10:22:34,990 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-14 10:22:34,990 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1354409872] [2022-12-14 10:22:34,990 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 10:22:34,990 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 10:22:34,990 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-12-14 10:22:34,991 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 10:22:34,991 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 10:22:34,991 INFO L87 Difference]: Start difference. First operand 26631 states and 132831 transitions. Second operand has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 10:22:35,409 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 10:22:35,409 INFO L93 Difference]: Finished difference Result 22449 states and 108962 transitions. [2022-12-14 10:22:35,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 10:22:35,410 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2022-12-14 10:22:35,410 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 10:22:35,505 INFO L225 Difference]: With dead ends: 22449 [2022-12-14 10:22:35,506 INFO L226 Difference]: Without dead ends: 22449 [2022-12-14 10:22:35,506 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 10:22:35,506 INFO L413 NwaCegarLoop]: 36 mSDtfsCounter, 68 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 138 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 68 SdHoareTripleChecker+Valid, 46 SdHoareTripleChecker+Invalid, 141 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 138 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-12-14 10:22:35,507 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [68 Valid, 46 Invalid, 141 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 138 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-12-14 10:22:35,553 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22449 states. [2022-12-14 10:22:36,029 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22449 to 22449. [2022-12-14 10:22:36,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22449 states, 21464 states have (on average 5.076500186358554) internal successors, (108962), 22448 states have internal predecessors, (108962), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 10:22:36,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22449 states to 22449 states and 108962 transitions. [2022-12-14 10:22:36,137 INFO L78 Accepts]: Start accepts. Automaton has 22449 states and 108962 transitions. Word has length 8 [2022-12-14 10:22:36,138 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 10:22:36,138 INFO L495 AbstractCegarLoop]: Abstraction has 22449 states and 108962 transitions. [2022-12-14 10:22:36,138 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 10:22:36,138 INFO L276 IsEmpty]: Start isEmpty. Operand 22449 states and 108962 transitions. [2022-12-14 10:22:36,138 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-12-14 10:22:36,138 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 10:22:36,138 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 10:22:36,147 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e77b52e-939a-4ffa-8d80-54c08a5c9661/bin/utaipan-gh47qXpMRh/mathsat -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)] Ended with exit code 0 [2022-12-14 10:22:36,339 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e77b52e-939a-4ffa-8d80-54c08a5c9661/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 10:22:36,340 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 67 more)] === [2022-12-14 10:22:36,341 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 10:22:36,341 INFO L85 PathProgramCache]: Analyzing trace with hash 423773013, now seen corresponding path program 1 times [2022-12-14 10:22:36,342 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 10:22:36,343 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1673323716] [2022-12-14 10:22:36,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:22:36,344 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 [2022-12-14 10:22:36,344 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e77b52e-939a-4ffa-8d80-54c08a5c9661/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 10:22:36,347 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e77b52e-939a-4ffa-8d80-54c08a5c9661/bin/utaipan-gh47qXpMRh/mathsat -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) [2022-12-14 10:22:36,350 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e77b52e-939a-4ffa-8d80-54c08a5c9661/bin/utaipan-gh47qXpMRh/mathsat -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 [2022-12-14 10:22:36,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 10:22:36,475 INFO L263 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 13 conjunts are in the unsatisfiable core [2022-12-14 10:22:36,476 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 10:22:36,570 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 10:22:36,571 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 10:22:36,571 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-12-14 10:22:36,571 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1673323716] [2022-12-14 10:22:36,571 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1673323716] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 10:22:36,571 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 10:22:36,571 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-14 10:22:36,571 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1412074304] [2022-12-14 10:22:36,571 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 10:22:36,572 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-14 10:22:36,572 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-12-14 10:22:36,572 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-14 10:22:36,572 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-14 10:22:36,572 INFO L87 Difference]: Start difference. First operand 22449 states and 108962 transitions. Second operand has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 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) [2022-12-14 10:22:37,199 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 10:22:37,199 INFO L93 Difference]: Finished difference Result 31930 states and 149303 transitions. [2022-12-14 10:22:37,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-14 10:22:37,200 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 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 10 [2022-12-14 10:22:37,200 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 10:22:37,342 INFO L225 Difference]: With dead ends: 31930 [2022-12-14 10:22:37,342 INFO L226 Difference]: Without dead ends: 31910 [2022-12-14 10:22:37,342 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-12-14 10:22:37,343 INFO L413 NwaCegarLoop]: 34 mSDtfsCounter, 132 mSDsluCounter, 68 mSDsCounter, 0 mSdLazyCounter, 158 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 132 SdHoareTripleChecker+Valid, 102 SdHoareTripleChecker+Invalid, 164 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 158 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-12-14 10:22:37,343 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [132 Valid, 102 Invalid, 164 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 158 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-12-14 10:22:37,403 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31910 states. [2022-12-14 10:22:37,996 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31910 to 30914. [2022-12-14 10:22:38,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30914 states, 29888 states have (on average 4.900127141327623) internal successors, (146455), 30913 states have internal predecessors, (146455), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 10:22:38,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30914 states to 30914 states and 146455 transitions. [2022-12-14 10:22:38,162 INFO L78 Accepts]: Start accepts. Automaton has 30914 states and 146455 transitions. Word has length 10 [2022-12-14 10:22:38,162 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 10:22:38,162 INFO L495 AbstractCegarLoop]: Abstraction has 30914 states and 146455 transitions. [2022-12-14 10:22:38,162 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 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) [2022-12-14 10:22:38,162 INFO L276 IsEmpty]: Start isEmpty. Operand 30914 states and 146455 transitions. [2022-12-14 10:22:38,163 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-12-14 10:22:38,163 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 10:22:38,163 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 10:22:38,173 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e77b52e-939a-4ffa-8d80-54c08a5c9661/bin/utaipan-gh47qXpMRh/mathsat -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 [2022-12-14 10:22:38,364 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e77b52e-939a-4ffa-8d80-54c08a5c9661/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 10:22:38,365 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 67 more)] === [2022-12-14 10:22:38,366 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 10:22:38,366 INFO L85 PathProgramCache]: Analyzing trace with hash -1746134296, now seen corresponding path program 1 times [2022-12-14 10:22:38,367 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 10:22:38,367 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1487924867] [2022-12-14 10:22:38,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:22:38,368 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 [2022-12-14 10:22:38,368 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e77b52e-939a-4ffa-8d80-54c08a5c9661/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 10:22:38,371 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e77b52e-939a-4ffa-8d80-54c08a5c9661/bin/utaipan-gh47qXpMRh/mathsat -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) [2022-12-14 10:22:38,374 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e77b52e-939a-4ffa-8d80-54c08a5c9661/bin/utaipan-gh47qXpMRh/mathsat -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 [2022-12-14 10:22:38,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 10:22:38,481 INFO L263 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 15 conjunts are in the unsatisfiable core [2022-12-14 10:22:38,482 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 10:22:38,583 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 10:22:38,583 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 10:22:38,669 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 10:22:38,669 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-12-14 10:22:38,669 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1487924867] [2022-12-14 10:22:38,669 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1487924867] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 10:22:38,670 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [331610449] [2022-12-14 10:22:38,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:22:38,670 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-12-14 10:22:38,670 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e77b52e-939a-4ffa-8d80-54c08a5c9661/bin/utaipan-gh47qXpMRh/cvc4 [2022-12-14 10:22:38,671 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e77b52e-939a-4ffa-8d80-54c08a5c9661/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-12-14 10:22:38,671 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e77b52e-939a-4ffa-8d80-54c08a5c9661/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (18)] Waiting until timeout for monitored process [2022-12-14 10:22:38,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 10:22:38,805 INFO L263 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 13 conjunts are in the unsatisfiable core [2022-12-14 10:22:38,806 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 10:22:38,943 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 10:22:38,943 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 10:22:39,055 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 10:22:39,055 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [331610449] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 10:22:39,055 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [487459808] [2022-12-14 10:22:39,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:22:39,056 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 10:22:39,056 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e77b52e-939a-4ffa-8d80-54c08a5c9661/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 10:22:39,057 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e77b52e-939a-4ffa-8d80-54c08a5c9661/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 10:22:39,057 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e77b52e-939a-4ffa-8d80-54c08a5c9661/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2022-12-14 10:22:39,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 10:22:39,134 INFO L263 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 15 conjunts are in the unsatisfiable core [2022-12-14 10:22:39,135 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 10:22:39,199 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 10:22:39,199 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 10:22:39,234 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 10:22:39,234 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [487459808] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 10:22:39,235 INFO L184 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2022-12-14 10:22:39,235 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3, 3, 3, 3] total 10 [2022-12-14 10:22:39,235 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1461958548] [2022-12-14 10:22:39,235 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2022-12-14 10:22:39,235 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-12-14 10:22:39,235 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-12-14 10:22:39,236 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-12-14 10:22:39,236 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2022-12-14 10:22:39,236 INFO L87 Difference]: Start difference. First operand 30914 states and 146455 transitions. Second operand has 12 states, 11 states have (on average 2.5454545454545454) internal successors, (28), 11 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 10:22:41,324 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 10:22:41,324 INFO L93 Difference]: Finished difference Result 61598 states and 276166 transitions. [2022-12-14 10:22:41,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-12-14 10:22:41,325 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 2.5454545454545454) internal successors, (28), 11 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2022-12-14 10:22:41,325 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 10:22:41,627 INFO L225 Difference]: With dead ends: 61598 [2022-12-14 10:22:41,627 INFO L226 Difference]: Without dead ends: 61598 [2022-12-14 10:22:41,627 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=102, Invalid=240, Unknown=0, NotChecked=0, Total=342 [2022-12-14 10:22:41,628 INFO L413 NwaCegarLoop]: 67 mSDtfsCounter, 1012 mSDsluCounter, 354 mSDsCounter, 0 mSdLazyCounter, 603 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1012 SdHoareTripleChecker+Valid, 421 SdHoareTripleChecker+Invalid, 616 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 603 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-12-14 10:22:41,628 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1012 Valid, 421 Invalid, 616 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 603 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-12-14 10:22:41,736 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61598 states. [2022-12-14 10:22:42,628 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61598 to 36669. [2022-12-14 10:22:42,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36669 states, 35643 states have (on average 4.851976545184187) internal successors, (172939), 36668 states have internal predecessors, (172939), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 10:22:42,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36669 states to 36669 states and 172939 transitions. [2022-12-14 10:22:42,824 INFO L78 Accepts]: Start accepts. Automaton has 36669 states and 172939 transitions. Word has length 11 [2022-12-14 10:22:42,824 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 10:22:42,824 INFO L495 AbstractCegarLoop]: Abstraction has 36669 states and 172939 transitions. [2022-12-14 10:22:42,824 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 2.5454545454545454) internal successors, (28), 11 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 10:22:42,825 INFO L276 IsEmpty]: Start isEmpty. Operand 36669 states and 172939 transitions. [2022-12-14 10:22:42,825 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-12-14 10:22:42,825 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 10:22:42,825 INFO L195 NwaCegarLoop]: trace histogram [10, 1, 1] [2022-12-14 10:22:42,831 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e77b52e-939a-4ffa-8d80-54c08a5c9661/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2022-12-14 10:22:43,038 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e77b52e-939a-4ffa-8d80-54c08a5c9661/bin/utaipan-gh47qXpMRh/mathsat -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 [2022-12-14 10:22:43,233 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e77b52e-939a-4ffa-8d80-54c08a5c9661/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (18)] Forceful destruction successful, exit code 0 [2022-12-14 10:22:43,427 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e77b52e-939a-4ffa-8d80-54c08a5c9661/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e77b52e-939a-4ffa-8d80-54c08a5c9661/bin/utaipan-gh47qXpMRh/mathsat -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 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e77b52e-939a-4ffa-8d80-54c08a5c9661/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt [2022-12-14 10:22:43,428 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 67 more)] === [2022-12-14 10:22:43,429 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 10:22:43,429 INFO L85 PathProgramCache]: Analyzing trace with hash -2078377826, now seen corresponding path program 3 times [2022-12-14 10:22:43,430 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 10:22:43,431 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [872162948] [2022-12-14 10:22:43,431 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-14 10:22:43,431 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 [2022-12-14 10:22:43,431 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e77b52e-939a-4ffa-8d80-54c08a5c9661/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 10:22:43,432 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e77b52e-939a-4ffa-8d80-54c08a5c9661/bin/utaipan-gh47qXpMRh/mathsat -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) [2022-12-14 10:22:43,434 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e77b52e-939a-4ffa-8d80-54c08a5c9661/bin/utaipan-gh47qXpMRh/mathsat -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 [2022-12-14 10:22:43,699 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2022-12-14 10:22:43,699 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-14 10:22:43,706 INFO L263 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 20 conjunts are in the unsatisfiable core [2022-12-14 10:22:43,708 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 10:22:43,752 INFO L321 Elim1Store]: treesize reduction 37, result has 37.3 percent of original size [2022-12-14 10:22:43,753 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 14 treesize of output 29 [2022-12-14 10:22:44,065 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 10:22:44,065 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 10:22:46,440 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 10:22:46,440 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-12-14 10:22:46,440 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [872162948] [2022-12-14 10:22:46,440 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [872162948] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 10:22:46,440 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [2139311017] [2022-12-14 10:22:46,440 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-14 10:22:46,440 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-12-14 10:22:46,441 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e77b52e-939a-4ffa-8d80-54c08a5c9661/bin/utaipan-gh47qXpMRh/cvc4 [2022-12-14 10:22:46,441 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e77b52e-939a-4ffa-8d80-54c08a5c9661/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-12-14 10:22:46,442 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e77b52e-939a-4ffa-8d80-54c08a5c9661/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (21)] Waiting until timeout for monitored process [2022-12-14 10:22:46,980 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2022-12-14 10:22:46,981 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-14 10:22:46,987 INFO L263 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 20 conjunts are in the unsatisfiable core [2022-12-14 10:22:46,989 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 10:22:47,040 INFO L321 Elim1Store]: treesize reduction 37, result has 37.3 percent of original size [2022-12-14 10:22:47,040 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 [2022-12-14 10:22:47,159 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 10:22:47,159 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 10:22:47,471 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 10:22:47,471 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [2139311017] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 10:22:47,471 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1745686261] [2022-12-14 10:22:47,471 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-14 10:22:47,471 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 10:22:47,472 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e77b52e-939a-4ffa-8d80-54c08a5c9661/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 10:22:47,472 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e77b52e-939a-4ffa-8d80-54c08a5c9661/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 10:22:47,473 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e77b52e-939a-4ffa-8d80-54c08a5c9661/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2022-12-14 10:22:49,753 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2022-12-14 10:22:49,754 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-14 10:22:49,762 INFO L263 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 20 conjunts are in the unsatisfiable core [2022-12-14 10:22:49,763 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 10:22:49,810 INFO L321 Elim1Store]: treesize reduction 37, result has 37.3 percent of original size [2022-12-14 10:22:49,811 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 [2022-12-14 10:22:49,931 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 10:22:49,931 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 10:22:50,230 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 10:22:50,230 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1745686261] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 10:22:50,231 INFO L184 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2022-12-14 10:22:50,231 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11, 11, 11, 11] total 22 [2022-12-14 10:22:50,231 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [963808899] [2022-12-14 10:22:50,231 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2022-12-14 10:22:50,231 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-12-14 10:22:50,231 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-12-14 10:22:50,232 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-12-14 10:22:50,232 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=166, Invalid=386, Unknown=0, NotChecked=0, Total=552 [2022-12-14 10:22:50,232 INFO L87 Difference]: Start difference. First operand 36669 states and 172939 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) [2022-12-14 10:23:16,887 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 10:23:16,887 INFO L93 Difference]: Finished difference Result 36822 states and 173247 transitions. [2022-12-14 10:23:16,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-12-14 10:23:16,888 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 [2022-12-14 10:23:16,888 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 10:23:17,050 INFO L225 Difference]: With dead ends: 36822 [2022-12-14 10:23:17,050 INFO L226 Difference]: Without dead ends: 36822 [2022-12-14 10:23:17,051 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 15.8s TimeCoverageRelationStatistics Valid=454, Invalid=806, Unknown=0, NotChecked=0, Total=1260 [2022-12-14 10:23:17,051 INFO L413 NwaCegarLoop]: 39 mSDtfsCounter, 815 mSDsluCounter, 317 mSDsCounter, 0 mSdLazyCounter, 1899 mSolverCounterSat, 222 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 815 SdHoareTripleChecker+Valid, 356 SdHoareTripleChecker+Invalid, 2121 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 222 IncrementalHoareTripleChecker+Valid, 1899 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.9s IncrementalHoareTripleChecker+Time [2022-12-14 10:23:17,051 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [815 Valid, 356 Invalid, 2121 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [222 Valid, 1899 Invalid, 0 Unknown, 0 Unchecked, 12.9s Time] [2022-12-14 10:23:17,118 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36822 states. [2022-12-14 10:23:17,805 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36822 to 36681. [2022-12-14 10:23:17,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36681 states, 35655 states have (on average 4.851016687701585) internal successors, (172963), 36680 states have internal predecessors, (172963), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 10:23:18,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36681 states to 36681 states and 172963 transitions. [2022-12-14 10:23:18,001 INFO L78 Accepts]: Start accepts. Automaton has 36681 states and 172963 transitions. Word has length 12 [2022-12-14 10:23:18,001 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 10:23:18,001 INFO L495 AbstractCegarLoop]: Abstraction has 36681 states and 172963 transitions. [2022-12-14 10:23:18,001 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) [2022-12-14 10:23:18,001 INFO L276 IsEmpty]: Start isEmpty. Operand 36681 states and 172963 transitions. [2022-12-14 10:23:18,002 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-12-14 10:23:18,002 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 10:23:18,002 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 10:23:18,006 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e77b52e-939a-4ffa-8d80-54c08a5c9661/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (21)] Ended with exit code 0 [2022-12-14 10:23:18,233 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e77b52e-939a-4ffa-8d80-54c08a5c9661/bin/utaipan-gh47qXpMRh/mathsat -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)] Ended with exit code 0 [2022-12-14 10:23:18,415 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e77b52e-939a-4ffa-8d80-54c08a5c9661/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Ended with exit code 0 [2022-12-14 10:23:18,604 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e77b52e-939a-4ffa-8d80-54c08a5c9661/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt,20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e77b52e-939a-4ffa-8d80-54c08a5c9661/bin/utaipan-gh47qXpMRh/mathsat -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 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e77b52e-939a-4ffa-8d80-54c08a5c9661/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 10:23:18,605 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 67 more)] === [2022-12-14 10:23:18,606 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 10:23:18,607 INFO L85 PathProgramCache]: Analyzing trace with hash -293784139, now seen corresponding path program 2 times [2022-12-14 10:23:18,608 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 10:23:18,608 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1032432951] [2022-12-14 10:23:18,608 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-14 10:23:18,608 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 [2022-12-14 10:23:18,608 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e77b52e-939a-4ffa-8d80-54c08a5c9661/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 10:23:18,609 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e77b52e-939a-4ffa-8d80-54c08a5c9661/bin/utaipan-gh47qXpMRh/mathsat -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) [2022-12-14 10:23:18,610 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e77b52e-939a-4ffa-8d80-54c08a5c9661/bin/utaipan-gh47qXpMRh/mathsat -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 [2022-12-14 10:23:18,710 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-12-14 10:23:18,710 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-14 10:23:18,713 INFO L263 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 9 conjunts are in the unsatisfiable core [2022-12-14 10:23:18,715 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 10:23:18,743 INFO L321 Elim1Store]: treesize reduction 39, result has 40.0 percent of original size [2022-12-14 10:23:18,743 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 [2022-12-14 10:23:18,768 INFO L321 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2022-12-14 10:23:18,768 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 24 [2022-12-14 10:23:18,791 INFO L321 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2022-12-14 10:23:18,792 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 18 treesize of output 28 [2022-12-14 10:23:18,845 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-12-14 10:23:18,846 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 10:23:18,846 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-12-14 10:23:18,846 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1032432951] [2022-12-14 10:23:18,846 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1032432951] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 10:23:18,846 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 10:23:18,846 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-14 10:23:18,846 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1725531784] [2022-12-14 10:23:18,846 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 10:23:18,847 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-14 10:23:18,847 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-12-14 10:23:18,847 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-14 10:23:18,847 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-12-14 10:23:18,847 INFO L87 Difference]: Start difference. First operand 36681 states and 172963 transitions. Second operand has 6 states, 5 states have (on average 2.2) internal successors, (11), 5 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 10:23:19,507 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 10:23:19,507 INFO L93 Difference]: Finished difference Result 23505 states and 103277 transitions. [2022-12-14 10:23:19,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-14 10:23:19,507 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.2) internal successors, (11), 5 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2022-12-14 10:23:19,507 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 10:23:19,594 INFO L225 Difference]: With dead ends: 23505 [2022-12-14 10:23:19,594 INFO L226 Difference]: Without dead ends: 23505 [2022-12-14 10:23:19,594 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-12-14 10:23:19,595 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 276 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 253 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 276 SdHoareTripleChecker+Valid, 60 SdHoareTripleChecker+Invalid, 277 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 253 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-12-14 10:23:19,595 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [276 Valid, 60 Invalid, 277 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 253 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-12-14 10:23:19,635 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23505 states. [2022-12-14 10:23:20,092 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23505 to 22551. [2022-12-14 10:23:20,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22551 states, 22113 states have (on average 4.582643693754805) internal successors, (101336), 22550 states have internal predecessors, (101336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 10:23:20,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22551 states to 22551 states and 101336 transitions. [2022-12-14 10:23:20,201 INFO L78 Accepts]: Start accepts. Automaton has 22551 states and 101336 transitions. Word has length 12 [2022-12-14 10:23:20,201 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 10:23:20,201 INFO L495 AbstractCegarLoop]: Abstraction has 22551 states and 101336 transitions. [2022-12-14 10:23:20,202 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.2) internal successors, (11), 5 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 10:23:20,202 INFO L276 IsEmpty]: Start isEmpty. Operand 22551 states and 101336 transitions. [2022-12-14 10:23:20,202 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-12-14 10:23:20,202 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 10:23:20,202 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 10:23:20,211 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e77b52e-939a-4ffa-8d80-54c08a5c9661/bin/utaipan-gh47qXpMRh/mathsat -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 [2022-12-14 10:23:20,403 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e77b52e-939a-4ffa-8d80-54c08a5c9661/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 10:23:20,404 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting thread2Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 67 more)] === [2022-12-14 10:23:20,405 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 10:23:20,405 INFO L85 PathProgramCache]: Analyzing trace with hash -293784140, now seen corresponding path program 1 times [2022-12-14 10:23:20,406 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 10:23:20,406 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2008208312] [2022-12-14 10:23:20,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:23:20,407 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 10:23:20,407 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e77b52e-939a-4ffa-8d80-54c08a5c9661/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 10:23:20,410 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e77b52e-939a-4ffa-8d80-54c08a5c9661/bin/utaipan-gh47qXpMRh/mathsat -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) [2022-12-14 10:23:20,413 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e77b52e-939a-4ffa-8d80-54c08a5c9661/bin/utaipan-gh47qXpMRh/mathsat -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 [2022-12-14 10:23:20,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 10:23:20,585 INFO L263 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 28 conjunts are in the unsatisfiable core [2022-12-14 10:23:20,588 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 10:23:20,657 INFO L321 Elim1Store]: treesize reduction 37, result has 37.3 percent of original size [2022-12-14 10:23:20,657 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 [2022-12-14 10:23:20,720 INFO L321 Elim1Store]: treesize reduction 39, result has 40.0 percent of original size [2022-12-14 10:23:20,720 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 [2022-12-14 10:23:20,943 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:23:20,944 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 19 [2022-12-14 10:23:20,961 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:23:20,961 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-12-14 10:23:21,017 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:23:21,018 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-12-14 10:23:21,153 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 10:23:21,153 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 10:23:30,945 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 10:23:30,946 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-12-14 10:23:30,946 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2008208312] [2022-12-14 10:23:30,946 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2008208312] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 10:23:30,946 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1153203019] [2022-12-14 10:23:30,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:23:30,946 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-12-14 10:23:30,947 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e77b52e-939a-4ffa-8d80-54c08a5c9661/bin/utaipan-gh47qXpMRh/cvc4 [2022-12-14 10:23:30,947 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e77b52e-939a-4ffa-8d80-54c08a5c9661/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-12-14 10:23:30,948 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e77b52e-939a-4ffa-8d80-54c08a5c9661/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (25)] Waiting until timeout for monitored process [2022-12-14 10:23:31,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 10:23:31,164 INFO L263 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 24 conjunts are in the unsatisfiable core [2022-12-14 10:23:31,166 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 10:23:31,225 INFO L321 Elim1Store]: treesize reduction 37, result has 37.3 percent of original size [2022-12-14 10:23:31,225 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 [2022-12-14 10:23:31,691 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:23:31,692 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-12-14 10:23:31,753 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:23:31,754 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-12-14 10:23:31,844 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 10:23:31,844 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 10:23:33,927 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse0 (bvmul (_ bv4 32) c_~i1~0))) (let ((.cse1 (bvadd c_~x~0.offset .cse0 (_ bv8 32)))) (and (or (= (bvadd |c_#StackHeapBarrier| (_ bv1 32)) (_ bv0 32)) (bvule (bvadd c_~x~0.offset (_ bv4 32) .cse0) .cse1)) (forall ((|v_thread1Thread1of1ForFork3_~#t3~0#1.base_191| (_ BitVec 32))) (or (forall ((v_ArrVal_689 (_ BitVec 32))) (bvule .cse1 (select (store |c_#length| |v_thread1Thread1of1ForFork3_~#t3~0#1.base_191| v_ArrVal_689) c_~x~0.base))) (not (bvult |c_#StackHeapBarrier| |v_thread1Thread1of1ForFork3_~#t3~0#1.base_191|))))))) is different from false [2022-12-14 10:23:41,350 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 10:23:41,350 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1153203019] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 10:23:41,350 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1464095406] [2022-12-14 10:23:41,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:23:41,350 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 10:23:41,350 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e77b52e-939a-4ffa-8d80-54c08a5c9661/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 10:23:41,351 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e77b52e-939a-4ffa-8d80-54c08a5c9661/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 10:23:41,352 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e77b52e-939a-4ffa-8d80-54c08a5c9661/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2022-12-14 10:23:41,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 10:23:41,442 INFO L263 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 28 conjunts are in the unsatisfiable core [2022-12-14 10:23:41,444 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 10:23:41,497 INFO L321 Elim1Store]: treesize reduction 37, result has 37.3 percent of original size [2022-12-14 10:23:41,498 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 [2022-12-14 10:23:41,873 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:23:41,874 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-12-14 10:23:41,888 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-12-14 10:23:41,888 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 19 treesize of output 27 [2022-12-14 10:23:42,027 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:23:42,027 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-12-14 10:23:42,044 INFO L321 Elim1Store]: treesize reduction 12, result has 42.9 percent of original size [2022-12-14 10:23:42,044 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 20 treesize of output 22 [2022-12-14 10:23:42,205 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 10:23:42,206 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 10:23:59,158 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-14 10:23:59,158 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 62 treesize of output 152 [2022-12-14 10:24:02,456 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 10:24:02,457 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1464095406] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 10:24:02,457 INFO L184 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2022-12-14 10:24:02,457 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6, 6, 6, 6] total 31 [2022-12-14 10:24:02,457 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1879269869] [2022-12-14 10:24:02,457 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2022-12-14 10:24:02,457 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-12-14 10:24:02,458 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-12-14 10:24:02,458 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-12-14 10:24:02,459 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=136, Invalid=852, Unknown=8, NotChecked=60, Total=1056 [2022-12-14 10:24:02,459 INFO L87 Difference]: Start difference. First operand 22551 states and 101336 transitions. Second operand has 33 states, 32 states have (on average 1.75) internal successors, (56), 32 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 10:24:19,518 WARN L233 SmtUtils]: Spent 16.40s on a formula simplification. DAG size of input: 100 DAG size of output: 61 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 10:25:06,104 WARN L233 SmtUtils]: Spent 45.94s on a formula simplification. DAG size of input: 117 DAG size of output: 117 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 10:25:36,275 WARN L233 SmtUtils]: Spent 29.38s on a formula simplification. DAG size of input: 93 DAG size of output: 92 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 10:25:38,639 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2022-12-14 10:25:40,821 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-14 10:25:42,826 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-14 10:26:38,814 WARN L233 SmtUtils]: Spent 53.13s on a formula simplification. DAG size of input: 138 DAG size of output: 138 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 10:26:55,905 WARN L233 SmtUtils]: Spent 16.52s on a formula simplification that was a NOOP. DAG size: 82 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 10:26:58,862 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-14 10:27:00,869 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-14 10:27:02,949 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-14 10:27:05,827 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-14 10:27:07,832 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-14 10:27:09,845 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-14 10:27:13,088 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.82s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-14 10:27:15,359 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-14 10:27:17,520 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-14 10:28:51,668 WARN L233 SmtUtils]: Spent 1.52m on a formula simplification. DAG size of input: 127 DAG size of output: 118 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 10:28:54,009 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-14 10:29:02,033 WARN L233 SmtUtils]: Spent 5.79s on a formula simplification. DAG size of input: 84 DAG size of output: 84 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 10:29:04,041 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-14 10:30:00,986 WARN L233 SmtUtils]: Spent 48.97s on a formula simplification. DAG size of input: 118 DAG size of output: 114 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 10:30:02,995 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-14 10:30:05,000 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2022-12-14 10:30:52,434 WARN L233 SmtUtils]: Spent 42.42s on a formula simplification. DAG size of input: 117 DAG size of output: 113 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 10:30:54,445 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-14 10:30:57,660 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-14 10:31:02,147 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-14 10:31:04,152 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-14 10:31:06,157 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2022-12-14 10:31:22,820 WARN L233 SmtUtils]: Spent 12.79s on a formula simplification. DAG size of input: 69 DAG size of output: 68 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 10:31:24,849 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-14 10:31:26,864 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-14 10:31:28,881 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-14 10:31:30,012 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.13s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-14 10:31:32,068 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-14 10:31:34,680 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-14 10:31:36,709 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-14 10:31:39,046 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-14 10:31:41,884 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-14 10:31:44,164 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-14 10:31:46,403 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-14 10:31:48,704 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-14 10:31:50,850 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-14 10:31:54,460 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-14 10:31:57,041 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-14 10:31:59,320 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-14 10:32:01,607 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-14 10:32:03,712 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-14 10:32:05,948 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2022-12-14 10:32:09,562 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-14 10:32:11,648 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-14 10:32:14,646 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.34s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-14 10:32:16,909 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-14 10:32:19,025 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-14 10:32:21,623 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2022-12-14 10:32:33,389 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-14 10:32:36,130 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-14 10:32:38,139 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2022-12-14 10:32:40,367 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-14 10:32:42,460 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-14 10:33:25,290 WARN L233 SmtUtils]: Spent 38.32s on a formula simplification. DAG size of input: 92 DAG size of output: 90 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 10:33:27,331 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.01s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-14 10:33:30,374 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-14 10:33:32,385 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-14 10:33:34,401 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-14 10:33:36,412 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-14 10:33:38,426 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-14 10:33:41,260 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-14 10:34:30,827 WARN L233 SmtUtils]: Spent 46.24s on a formula simplification. DAG size of input: 100 DAG size of output: 83 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 10:34:34,189 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-14 10:34:36,936 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-14 10:34:39,167 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-14 10:34:41,466 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-14 10:34:45,385 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-14 10:35:02,440 WARN L233 SmtUtils]: Spent 8.47s on a formula simplification that was a NOOP. DAG size: 94 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 10:35:04,587 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-14 10:35:06,604 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-14 10:35:08,617 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-14 10:35:10,817 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-14 10:35:14,478 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-14 10:35:27,264 WARN L233 SmtUtils]: Spent 8.23s on a formula simplification that was a NOOP. DAG size: 68 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 10:35:28,460 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.06s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-14 10:35:30,223 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.70s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-14 10:35:40,726 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-14 10:35:42,741 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-14 10:35:44,759 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-14 10:35:48,011 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-14 10:35:50,589 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-14 10:35:52,785 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-14 10:35:54,974 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1]